:root {
    --bg-dark: #0a0e1a;
    --bg-medium: #141b2d;
    --bg-light: #1e2842;
    --accent-primary: #00ff88;
    --accent-secondary: #00d4ff;
    --accent-danger: #ff3366;
    --text-primary: #e8f0ff;
    --text-secondary: #8b9dc3;
    --grid-color: rgba(220, 220, 220, 0.08);
    --wire-on: #00ff88;
    --wire-off: #334155;

    --border-radius: 8px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow-soft: 0 4px 24px rgba(0, 0, 0, 0.4);
    --shadow-hard: 0 8px 32px rgba(0, 0, 0, 0.6);
    --glow-primary: 0 0 20px rgba(0, 255, 136, 0.3);
    --glow-secondary: 0 0 20px rgba(0, 212, 255, 0.3);

    /* Color Palette - Technical Blue & Amber */
    --color-bg-primary: #0a0e1a;
    --color-bg-secondary: #111827;
    --color-bg-tertiary: #1a2234;
    --color-bg-elevated: #1f2937;

    --color-accent-primary: #60a5fa;
    --color-accent-secondary: #3b82f6;
    --color-accent-tertiary: #2563eb;
    --color-accent-amber: #fbbf24;
    --color-accent-green: #10b981;

    --color-text-primary: #f3f4f6;
    --color-text-secondary: #d1d5db;
    --color-text-tertiary: #9ca3af;
    --color-text-muted: #6b7280;

    --color-border: #374151;
    --color-border-light: #4b5563;
    --color-border-accent: #60a5fa;

    /* Shadows & Effects */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6);
    --shadow-glow: 0 0 20px rgba(96, 165, 250, 0.3);
    --shadow-glow-amber: 0 0 20px rgba(251, 191, 36, 0.3);

    /* Typography */
    --font-mono: 'JetBrains Mono', 'Space Mono', 'Courier New', monospace;
    --font-body: 'Recursive', -apple-system, system-ui, sans-serif;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Azeret Mono', monospace;
    background: var(--bg-dark);
    color: var(--text-primary);
    height: 100vh;
}

body:has(.circuit-maker) {
    overflow: hidden;
}

.container {
    display: grid;
    grid-template-columns: 250px 1fr 320px;
    height: 100vh;
    gap: 0;
}

.sidebar {
    background: var(--bg-medium);
    border-right: 2px solid var(--bg-light);
    padding: 24px;
    overflow-y: auto;
}

.sidebar h2 {
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--accent-primary);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.sidebar h2::before {
    content: '▸';
    color: var(--accent-secondary);
}

.gate-palette {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.gate-btn {
    background: var(--bg-light);
    border: 2px solid var(--bg-light);
    color: var(--text-primary);
    padding: 12px 16px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
    overflow: hidden;
}

.gate-btn::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 3px;
    background: var(--accent-primary);
    transform: scaleY(0);
    transition: transform 0.2s ease;
}

.gate-btn:hover {
    background: rgba(0, 255, 136, 0.1);
    border-color: var(--accent-primary);
    transform: translateX(4px);
}

.gate-btn:hover::before {
    transform: scaleY(1);
}

.gate-btn:active {
    transform: translateX(2px) scale(0.98);
}

.canvas-container {
    position: relative;
    background: var(--bg-dark);
    background-image:
        linear-gradient(var(--grid-color) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
    background-size: 20px 20px;
    overflow: hidden;
}

canvas {
    position: absolute;
    top: 0;
    left: 0;
    cursor: crosshair;
}

.gate {
    position: absolute;
    background: var(--bg-light);
    border: 2px solid var(--accent-primary);
    padding: 5px;
    font-family: 'JetBrains Mono', monospace;
    font-weight: 600;
    font-size: 14px;
    cursor: move;
    user-select: none;
    box-shadow: 0 4px 20px rgba(0, 255, 136, 0.2);
    transition: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    min-width: 120px;
    text-align: center;
    border-radius: 4px;
    will-change: transform;
    animation: fadeIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.gate:hover {
    border-color: var(--accent-secondary);
    box-shadow: 0 6px 30px rgba(0, 212, 255, 0.4);
    z-index: 10;
    transform: translateY(-2px);
}

.gate.selected {
    border-color: var(--accent-secondary);
    box-shadow: 0 8px 40px rgba(0, 212, 255, 0.6);
    cursor: grabbing;
    z-index: 1000;
    transition: none;
}

.gate-content {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.gate-symbol {
    width: 80px;
    height: 60px;
    color: var(--accent-primary);
    margin-bottom: 4px;
    filter: drop-shadow(0 0 4px rgba(0, 255, 136, 0.3));
}

.gate:hover .gate-symbol {
    color: var(--accent-secondary);
    filter: drop-shadow(0 0 8px rgba(0, 212, 255, 0.5));
}

.gate-label {
    color: var(--accent-primary);
    font-size: 11px;
    letter-spacing: 1.5px;
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: 11px;
}

.connection-point {
    width: 14px;
    height: 14px;
    background: var(--bg-dark);
    border: 2.5px solid var(--accent-primary);
    border-radius: 50%;
    position: absolute;
    transform: translate(-50%, -50%);
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 5;
}

.connection-point:hover {
    background: var(--accent-primary);
    box-shadow: 0 0 12px var(--accent-primary);
    transform: translate(-50%, -50%) scale(1.4);
    border-width: 3px;
}

.connection-point.active {
    background: var(--accent-primary);
    box-shadow: 0 0 20px var(--accent-primary);
    animation: pulse 1s infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1.2);
    }

    50% {
        opacity: 0.6;
        transform: translate(-50%, -50%) scale(1.5);
    }
}

.input-point {
    left: 0;
    top: 50%;
}

.output-point {
    right: 0;
    top: 50%;
    transform: translate(50%, -50%);
}

.output-point:hover {
    transform: translate(50%, -50%) scale(1.4);
}

.truth-table-panel {
    background: var(--bg-medium);
    border-left: 2px solid var(--bg-light);
    padding: 24px;
    overflow-y: auto;
}

.truth-table-panel h2 {
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--accent-secondary);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.truth-table-panel h2::before {
    content: '◆';
    color: var(--accent-primary);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    margin-top: 16px;
}

th {
    background: var(--bg-light);
    color: var(--accent-primary);
    padding: 12px 8px;
    text-align: center;
    font-weight: 600;
    border: 1px solid rgba(0, 255, 136, 0.2);
    letter-spacing: 1px;
}

td {
    background: rgba(30, 40, 66, 0.5);
    color: var(--text-primary);
    padding: 10px 8px;
    text-align: center;
    border: 1px solid rgba(0, 255, 136, 0.1);
    transition: all 0.2s;
}

td:hover {
    background: rgba(0, 255, 136, 0.1);
}

.controls {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 24px;
}

.btn {
    background: var(--bg-light);
    border: 2px solid var(--accent-primary);
    color: var(--accent-primary);
    padding: 12px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-radius: 2px;
}

.btn:hover:not(:disabled) {
    background: var(--accent-primary);
    color: var(--bg-dark);
    box-shadow: 0 0 20px rgba(0, 255, 136, 0.5);
    transform: translateY(-2px);
}

.btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.btn:active:not(:disabled) {
    transform: translateY(0);
}

.btn.danger {
    border-color: var(--accent-danger);
    color: var(--accent-danger);
}

.btn.danger:hover {
    background: var(--accent-danger);
    color: white;
    box-shadow: 0 0 20px rgba(255, 51, 102, 0.5);
}

.instructions {
    margin-top: 24px;
    padding: 16px;
    background: rgba(0, 255, 136, 0.05);
    border-left: 3px solid var(--accent-primary);
    font-size: 11px;
    line-height: 1.6;
    color: var(--text-secondary);
    border-radius: 0 2px 2px 0;
}

.instructions p {
    margin-bottom: 8px;
}

.instructions strong {
    color: var(--accent-primary);
}

.input-controls {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 20px;
}

.output-display {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 20px;
    padding: 12px;
    background: rgba(0, 212, 255, 0.05);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 4px;
}

.output-display h3 {
    font-size: 12px;
    color: var(--accent-secondary);
    margin-bottom: 8px;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.output-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--bg-light);
    padding: 10px 12px;
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 2px;
    transition: all 0.2s;
}

.output-item:hover {
    background: rgba(30, 40, 66, 0.8);
}

.output-item label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    color: var(--text-secondary);
}

.output-value {
    font-family: 'JetBrains Mono', monospace;
    font-weight: 700;
    font-size: 14px;
    padding: 4px 12px;
    border: 2px solid;
    min-width: 40px;
    text-align: center;
    border-radius: 2px;
    transition: all 0.3s ease;
}

.output-value.high {
    color: var(--accent-primary);
    border-color: var(--accent-primary);
    background: rgba(0, 255, 136, 0.15);
    box-shadow: 0 0 15px rgba(0, 255, 136, 0.3);
    animation: glow 2s ease-in-out infinite;
}

.output-value.low {
    color: var(--text-secondary);
    border-color: var(--wire-off);
    background: rgba(51, 65, 85, 0.1);
}

@keyframes glow {

    0%,
    100% {
        box-shadow: 0 0 10px rgba(0, 255, 136, 0.3);
    }

    50% {
        box-shadow: 0 0 20px rgba(0, 255, 136, 0.5);
    }
}

.gate.output-gate {
    border-color: var(--accent-secondary);
    box-shadow: 0 4px 20px rgba(0, 212, 255, 0.3);
}

.gate.output-gate .gate-label {
    color: var(--accent-secondary);
}

.gate.output-gate .gate-symbol {
    color: var(--accent-secondary);
}

.gate.output-gate.active {
    background: rgba(0, 255, 136, 0.1);
    border-color: var(--accent-primary);
    box-shadow: 0 6px 30px rgba(0, 255, 136, 0.5);
}

.gate.output-gate.active .gate-label {
    color: var(--accent-primary);
}

.gate.output-gate.active .gate-symbol {
    color: var(--accent-primary);
}

.input-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--bg-light);
    padding: 10px 12px;
    border: 1px solid rgba(0, 255, 136, 0.2);
    border-radius: 2px;
    transition: all 0.2s;
}

.input-toggle:hover {
    background: rgba(30, 40, 66, 0.8);
}

.input-toggle label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    color: var(--text-secondary);
}

.toggle-btn {
    width: 50px;
    height: 26px;
    background: var(--wire-off);
    border: 2px solid var(--wire-off);
    border-radius: 13px;
    position: relative;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.toggle-btn:hover {
    transform: scale(1.05);
}

.toggle-btn.on {
    background: var(--wire-on);
    border-color: var(--wire-on);
    box-shadow: 0 0 15px var(--wire-on);
}

.toggle-btn::after {
    content: '';
    position: absolute;
    width: 18px;
    height: 18px;
    background: white;
    border-radius: 50%;
    left: 2px;
    top: 2px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.toggle-btn.on::after {
    left: 26px;
}

.stats {
    margin-top: 20px;
    padding: 12px;
    background: rgba(0, 212, 255, 0.05);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 4px;
    font-size: 11px;
    color: var(--text-secondary);
}

.stats div {
    display: flex;
    justify-content: space-between;
    margin-bottom: 6px;
}

.stats div:last-child {
    margin-bottom: 0;
}

.stats strong {
    color: var(--accent-secondary);
    font-weight: 700;
}

::-webkit-scrollbar {
    width: 4px;
}

::-webkit-scrollbar-track {
    background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
    background: var(--accent-primary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-secondary);
}



/* ================================================= */
/* =========== TRUTH TABLE (TruthTable.jsx) ======== */
/* ================================================= */
/* ===== Button ===== */

.tt-button {
    padding: 12px 26px;
    font-size: 16px;
    font-weight: 700;
    border: none;
    border-radius: 10px;
    cursor: pointer;

    background: linear-gradient(135deg,
            var(--accent-primary),
            var(--accent-secondary));
    color: #001b12;

    transition: all 0.25s ease;
    box-shadow: 0 4px 14px rgba(0, 255, 136, 0.25);
}

.tt-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 22px rgba(0, 255, 136, 0.45);
}

.tt-button:active {
    transform: translateY(0);
}


/* ===== Overlay ===== */

.tt-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(6px);

    display: flex;
    align-items: center;
    justify-content: center;

    z-index: 1000;
    padding: 24px;

    animation: ttFadeIn 0.25s ease;
}

@keyframes ttFadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}


/* ===== Modal ===== */

.tt-modal {
    background: var(--bg-medium);
    border-radius: 16px;
    padding: 28px 30px;
    width: 100%;
    max-width: 1100px;
    max-height: 90vh;
    overflow: auto;

    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow:
        0 25px 50px rgba(0, 0, 0, 0.6),
        0 0 0 1px rgba(0, 255, 136, 0.08) inset;

    position: relative;

    animation: ttSlideUp 0.3s ease;
}

@keyframes ttSlideUp {
    from {
        opacity: 0;
        transform: translateY(20px) scale(.98);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}


/* ===== Close Button ===== */

.tt-close {
    position: absolute;
    top: 14px;
    right: 14px;

    width: 34px;
    height: 34px;
    border-radius: 50%;
    border: none;

    background: var(--bg-light);
    color: var(--text-secondary);

    font-size: 20px;
    font-weight: 700;
    cursor: pointer;

    transition: all 0.2s ease;
}

.tt-close:hover {
    background: var(--accent-danger);
    color: white;
    transform: scale(1.1);
}


/* ===== Title ===== */

.tt-title {
    margin: 0 0 22px 0;
    font-size: 26px;
    font-weight: 800;
    letter-spacing: 0.3px;

    color: var(--text-primary);
}


/* ===== Table Wrapper ===== */

.tt-table-wrapper {
    overflow-x: auto;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.08);
}


/* ===== Table ===== */

.tt-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
    background: var(--bg-dark);
}


/* Header */

.tt-table thead th {
    padding: 14px 18px;
    text-align: center;
    font-weight: 700;

    background: var(--bg-light);
    color: var(--accent-secondary);

    border-bottom: 1px solid var(--grid-color);
    border-right: 1px solid var(--grid-color);

    letter-spacing: 0.4px;
}


/* Cells */

.tt-table td {
    padding: 12px 18px;
    text-align: center;
    color: var(--text-primary);

    border-right: 1px solid var(--grid-color);
    border-bottom: 1px solid var(--grid-color);
}


/* Row striping */

.tt-table tbody tr:nth-child(even) {
    background: rgba(255, 255, 255, 0.03);
}


/* Hover highlight */

.tt-table tbody tr:hover {
    background: rgba(0, 255, 136, 0.08);
    transition: background 0.15s ease;
}


/* Logic value styling (optional enhancement) */

.tt-table td {
    font-weight: 600;
}

.tt-table td:contains("1") {
    color: var(--wire-on);
}

.tt-table td:contains("0") {
    color: var(--text-secondary);
}



/* ================================================= */
/* =============== Save and Load =================== */
/* ================================================= */
/* ===== Overlay ===== */

.logic-circuit-project-manager-fullscreen-overlay-background-container {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(12px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 6000;
    animation: projectManagerFadeIn 0.35s ease-out;
}

/* ===== Modal ===== */

.logic-circuit-project-manager-modal-window-card-container {
    background: var(--bg-medium);
    border-radius: 24px;
    padding: 36px;
    width: min(520px, 90vw);
    max-height: 90vh;
    overflow-y: auto;
    border: 1px solid rgba(0, 255, 136, 0.25);
    box-shadow:
        0 30px 80px rgba(0, 0, 0, 0.7),
        0 0 0 1px rgba(0, 255, 136, 0.12) inset,
        0 8px 32px rgba(0, 255, 136, 0.15);
    animation: projectManagerSlideUp 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Custom scrollbar for the modal (if project list is long) */
.logic-circuit-project-manager-modal-window-card-container::-webkit-scrollbar {
    width: 8px;
}

.logic-circuit-project-manager-modal-window-card-container::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 4px;
}

.logic-circuit-project-manager-modal-window-card-container::-webkit-scrollbar-thumb {
    background: rgba(0, 255, 136, 0.4);
    border-radius: 4px;
}

.logic-circuit-project-manager-modal-window-card-container::-webkit-scrollbar-thumb:hover {
    background: var(--accent-primary);
}

/* ===== Title ===== */

.logic-circuit-project-manager-modal-title-text-heading {
    font-size: 28px;
    font-weight: 800;
    margin-bottom: 24px;
    color: var(--accent-primary);
    letter-spacing: 1.2px;
    text-shadow: 0 0 12px rgba(0, 255, 136, 0.4);
}

/* ===== Input ===== */

.logic-circuit-project-manager-project-name-text-input-field {
    width: 100%;
    padding: 16px;
    background: var(--bg-light);
    border: 2px solid transparent;
    color: white;
    border-radius: 12px;
    font-size: 16px;
    transition: all 0.25s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2) inset;
    margin-bottom: 20px;
}

.logic-circuit-project-manager-project-name-text-input-field::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

.logic-circuit-project-manager-project-name-text-input-field:focus {
    border-color: var(--accent-primary);
    box-shadow:
        0 0 20px rgba(0, 255, 136, 0.5),
        0 4px 12px rgba(0, 0, 0, 0.2) inset;
    outline: none;
    transform: translateY(-2px);
}

/* ===== Primary Action Button ===== */

.logic-circuit-project-manager-primary-action-button.first {
    margin-top: 20px;
}

.logic-circuit-project-manager-primary-action-button {
    width: 100%;
    padding: 16px;
    margin-bottom: 16px;
    border-radius: 14px;
    border: 2px solid var(--accent-primary);
    background: linear-gradient(135deg, rgba(0, 255, 136, 0.15), transparent);
    color: var(--accent-primary);
    font-weight: 700;
    letter-spacing: 1.2px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.logic-circuit-project-manager-primary-action-button:hover {
    background: var(--accent-primary);
    color: #000;
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(0, 255, 136, 0.5);
}

.logic-circuit-project-manager-primary-action-button:active {
    transform: translateY(-1px);
}

/* ===== Confirm / Cancel Buttons ===== */
.logic-circuit-project-manager-modal-button-row-layout-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
}

.logic-circuit-project-manager-modal-button-row-layout-wrapper button {
    margin: 5px 50px;
}

.logic-circuit-project-manager-confirm-save-button {
    flex: 1;
    padding: 16px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--accent-primary), #00b86e);
    color: #000;
    font-weight: 800;
    letter-spacing: 1px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.logic-circuit-project-manager-confirm-save-button:hover {
    transform: scale(1.06) translateY(-2px);
    box-shadow: 0 0 30px rgba(0, 255, 136, 0.7);
}

.logic-circuit-project-manager-cancel-close-button {
    flex: 1;
    padding: 16px;
    border-radius: 12px;
    background: var(--accent-danger);
    color: white;
    font-weight: 700;
    letter-spacing: 1px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.logic-circuit-project-manager-cancel-close-button:hover {
    transform: scale(1.06) translateY(-2px);
    box-shadow: 0 0 28px rgba(255, 51, 102, 0.7);
    background: #ff1a57;
}

/* ===== Project Rows ===== */

.logic-circuit-project-manager-project-row-item-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px;
    border-radius: 14px;
    background: var(--bg-light);
    margin-bottom: 12px;
    border: 1px solid rgba(0, 255, 136, 0.1);
    transition: all 0.25s ease;
    cursor: pointer;
}

.logic-circuit-project-manager-project-row-item-container:hover {
    background: rgba(0, 255, 136, 0.12);
    border-color: rgba(0, 255, 136, 0.4);
    box-shadow: 0 8px 25px rgba(0, 255, 136, 0.25);
}

/* ===== Small Buttons ===== */

.logic-circuit-project-manager-small-load-button {
    padding: 10px 16px;
    border-radius: 10px;
    border: 1.5px solid var(--accent-secondary);
    background: transparent;
    color: var(--accent-secondary);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.25s ease;
    margin-right: 15px;
}

.logic-circuit-project-manager-small-load-button:hover {
    background: var(--accent-secondary);
    color: #000;
}

.logic-circuit-project-manager-small-delete-button {
    padding: 10px 16px;
    border-radius: 10px;
    border: 1.5px solid var(--accent-danger);
    background: transparent;
    color: var(--accent-danger);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.25s ease;
}

.logic-circuit-project-manager-small-delete-button:hover {
    background: var(--accent-danger);
    color: white;
}

.logic-circuit-project-manager-empty-projects-placeholder-message {
    margin-bottom: 20px;
}

/* ===== Animations ===== */

@keyframes projectManagerFadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes projectManagerSlideUp {
    from {
        transform: translateY(40px);
        opacity: 0;
    }

    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* Container */
.converter-container {
    background: var(--bg-dark);
    color: var(--text-primary);
    font-family: 'Azeret Mono', 'Courier New', monospace;
    padding: 40px 20px;
}

/* Title Section */
.title-section {
    text-align: center;
    margin-bottom: 60px;
}

.main-title {
    font-size: 48px;
    font-weight: 800;
    letter-spacing: 3px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 12px;
    text-shadow: 0 0 40px rgba(0, 255, 136, 0.5);
}

.subtitle {
    color: var(--text-secondary);
    font-size: 14px;
    letter-spacing: 2px;
    text-transform: uppercase;
}

/* Converter Grid */
.converter-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    max-width: 1200px;
    margin: 0 auto 80px;
}

/* Converter Card */
.converter-card {
    background: var(--bg-medium);
    border: 2px solid var(--bg-light);
    border-radius: 16px;
    padding: 28px;
    transition: all 0.3s ease;
    animation: slideIn 0.3s ease-out;
}

.converter-card:hover {
    border-color: var(--accent-primary);
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 255, 136, 0.2);
}

/* Card Header */
.card-header {
    display: flex;
    align-items: center;
    margin-bottom: 16px;
}

.base-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 12px;
    font-size: 18px;
    font-weight: 700;
    transition: all 0.3s ease;
}

.base-icon.decimal {
    background: rgba(0, 255, 136, 0.15);
    border: 2px solid var(--accent-primary);
    color: var(--accent-primary);
}

.base-icon.binary {
    background: rgba(0, 212, 255, 0.15);
    border: 2px solid var(--accent-secondary);
    color: var(--accent-secondary);
}

.base-icon.octal {
    background: rgba(255, 51, 102, 0.15);
    border: 2px solid var(--accent-danger);
    color: var(--accent-danger);
}

.base-icon.hexadecimal {
    background: rgba(138, 43, 226, 0.15);
    border: 2px solid var(--accent-purple);
    color: var(--accent-purple);
}

.card-title {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.card-title.decimal {
    color: var(--accent-primary);
}

.card-title.binary {
    color: var(--accent-secondary);
}

.card-title.octal {
    color: var(--accent-danger);
}

.card-title.hexadecimal {
    color: var(--accent-purple);
}

/* Input Field */
.converter-input {
    width: 100%;
    background: var(--bg-dark);
    border: 2px solid var(--bg-light);
    border-radius: 12px;
    padding: 16px;
    color: var(--text-primary);
    font-size: 20px;
    font-family: 'JetBrains Mono', monospace;
    font-weight: 600;
    outline: none;
    transition: all 0.3s ease;
}

.converter-input::placeholder {
    color: var(--text-secondary);
    opacity: 0.5;
}

.converter-input:focus {
    border-color: var(--accent-primary);
    animation: glowPulse 2s infinite;
}

.card-info {
    margin-top: 12px;
    font-size: 12px;
    color: var(--text-secondary);
    letter-spacing: 0.5px;
}

/* Explanation Section */
.explanation-section {
    max-width: 1200px;
    margin: 0 auto;
}

.explanation-header {
    text-align: center;
    margin-bottom: 40px;
}

.explanation-title {
    font-size: 36px;
    font-weight: 800;
    letter-spacing: 2px;
    color: var(--accent-primary);
    margin-bottom: 12px;
}

.explanation-subtitle {
    color: var(--text-secondary);
    font-size: 14px;
    letter-spacing: 1px;
}

/* Conversion Grid */
.conversion-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 16px;
    margin-bottom: 40px;
}

/* Conversion Button */
.conversion-btn {
    background: var(--bg-medium);
    border: 2px solid var(--bg-light);
    border-radius: 12px;
    padding: 20px;
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 600;
    font-family: 'JetBrains Mono', monospace;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: left;
    letter-spacing: 0.5px;
    position: relative;
    overflow: hidden;
}

.conversion-btn::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 3px;
    background: var(--accent-primary);
    transform: scaleY(0);
    transition: transform 0.2s ease;
}

.conversion-btn:hover {
    background: rgba(0, 255, 136, 0.1);
    border-color: var(--accent-primary);
    transform: translateX(8px);
}

.conversion-btn:hover::before {
    transform: scaleY(1);
}

.conversion-btn:active {
    transform: translateX(4px);
}

/* Modal Overlay */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(12px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 20px;
    animation: fadeIn 0.3s ease-out;
}

/* Modal Content */
.modal-content {
    background: var(--bg-medium);
    border-radius: 24px;
    padding: 40px;
    max-width: 800px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    border: 2px solid var(--accent-primary);
    box-shadow:
        0 30px 80px rgba(0, 0, 0, 0.7),
        0 0 0 1px rgba(0, 255, 136, 0.12) inset,
        0 8px 32px rgba(0, 255, 136, 0.15);
    position: relative;
    animation: slideUp 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Custom Scrollbar for Modal */
.modal-content::-webkit-scrollbar {
    width: 8px;
}

.modal-content::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 4px;
}

.modal-content::-webkit-scrollbar-thumb {
    background: rgba(0, 255, 136, 0.4);
    border-radius: 4px;
}

.modal-content::-webkit-scrollbar-thumb:hover {
    background: var(--accent-primary);
}

/* Close Button */
.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--accent-danger);
    border: none;
    border-radius: 50%;
    width: 36px;
    height: 36px;
    color: white;
    font-size: 20px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s ease;
}

.modal-close:hover {
    transform: scale(1.1);
    box-shadow: 0 0 20px rgba(255, 51, 102, 0.5);
}

.modal-close:active {
    transform: scale(0.95);
}

/* Modal Title */
.modal-title {
    font-size: 28px;
    font-weight: 800;
    color: var(--accent-primary);
    margin-bottom: 24px;
    letter-spacing: 1px;
}

/* Steps Container */
.steps-container {
    background: var(--bg-dark);
    border-radius: 16px;
    padding: 24px;
    border: 1px solid var(--bg-light);
}

.step-item {
    margin-bottom: 16px;
    padding: 12px 16px;
    border-radius: 8px;
    border-left: 3px solid var(--accent-primary);
    color: var(--text-primary);
    font-size: 14px;
    font-family: 'JetBrains Mono', monospace;
    line-height: 1.6;
}

.step-item:last-child {
    margin-bottom: 0;
}

.step-item.even {
    background: rgba(0, 255, 136, 0.05);
}

.step-item.odd {
    background: transparent;
}

/* Pro Tip Box */
.pro-tip {
    margin-top: 32px;
    padding: 20px;
    background: rgba(0, 212, 255, 0.1);
    border: 2px solid var(--accent-secondary);
    border-radius: 12px;
}

.pro-tip-label {
    color: var(--accent-secondary);
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 8px;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.pro-tip-text {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.5;
}

/* Animations */
@keyframes glowPulse {

    0%,
    100% {
        box-shadow: 0 0 20px rgba(0, 255, 136, 0.3);
    }

    50% {
        box-shadow: 0 0 40px rgba(0, 255, 136, 0.6);
    }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes slideUp {
    from {
        transform: translateY(40px);
        opacity: 0;
    }

    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .main-title {
        font-size: 36px;
    }

    .converter-grid {
        grid-template-columns: 1fr;
    }

    .conversion-grid {
        grid-template-columns: 1fr;
    }

    .modal-content {
        padding: 24px;
    }

    .modal-title {
        font-size: 22px;
    }
}

@media (max-width: 480px) {
    .main-title {
        font-size: 28px;
        letter-spacing: 2px;
    }

    .converter-container {
        padding: 20px 10px;
    }

    .converter-card {
        padding: 20px;
    }

    .converter-input {
        font-size: 16px;
        padding: 12px;
    }
}

.calculator-container {
    position: relative;
    min-height: 100vh;
    padding: 2rem;
}

.grid-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(var(--grid-color) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
    z-index: 0;
}

.grid-background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 50%, transparent 0%, var(--bg-dark) 100%);
}

.header {
    position: relative;
    z-index: 1;
    text-align: center;
    margin-bottom: 3rem;
    animation: fadeInDown 0.8s ease-out;
}

.header-content {
    display: inline-block;
    padding: 1.5rem 3rem;
    background: linear-gradient(135deg, var(--bg-medium), var(--bg-light));
    border-radius: var(--border-radius);
    border: 1px solid rgba(0, 255, 136, 0.1);
    box-shadow: var(--shadow-soft);
    position: relative;
    overflow: hidden;
}

.header-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 255, 136, 0.1), transparent);
    animation: shimmer 3s infinite;
}

.title {
    font-family: 'Orbitron', sans-serif;
    font-size: 2.5rem;
    font-weight: 900;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.main-content {
    position: relative;
    z-index: 1;
    max-width: 1200px;
    margin: 0 auto;
}

.control-panel {
    background: var(--bg-medium);
    padding: 2rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--wire-off);
    box-shadow: var(--shadow-soft);
    margin-bottom: 2rem;
    transition: var(--transition);
}

.control-panel:hover {
    border-color: var(--accent-primary);
    box-shadow: var(--glow-primary), var(--shadow-soft);
}

.control-group {
    margin-bottom: 1.5rem;
}

.control-group:last-child {
    margin-bottom: 0;
}

.control-label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--accent-primary);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.control-select,
.control-input {
    width: 100%;
    padding: 0.875rem 1rem;
    background: var(--bg-light);
    color: var(--text-primary);
    border: 2px solid var(--wire-off);
    border-radius: var(--border-radius);
    font-family: 'JetBrains Mono', monospace;
    font-size: 1rem;
    transition: var(--transition);
    cursor: pointer;
}

.control-select:focus,
.control-input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: var(--glow-primary);
}

.control-select:hover,
.control-input:hover {
    border-color: var(--accent-secondary);
}

.control-select option {
    background: var(--bg-dark);
    color: var(--text-primary);
}

.input-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.results-section {
    display: grid;
    gap: 2rem;
}

.controls-row {
    margin-top: 1.5rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.result-card {
    background: var(--bg-medium);
    padding: 2rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--wire-off);
    box-shadow: var(--shadow-soft);
}

.result-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.5rem;
    color: var(--accent-secondary);
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.calculation-visual {
    display: flex;
    justify-content: center;
    padding: 2rem 0;
}

.visual-work {
    background: var(--bg-dark);
    padding: 2rem;
    border-radius: var(--border-radius);
    border: 2px solid var(--wire-off);
    display: inline-block;
}

.digit-row {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    margin: 0.5rem 0;
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.5rem;
    font-weight: 600;
}

.operator-space {
    width: 3rem;
    text-align: center;
    color: var(--accent-primary);
    font-weight: 700;
}

.digit-cell {
    min-width: 3rem;
    height: 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 0.25rem;
    background: var(--bg-light);
    border: 2px solid var(--wire-off);
    border-radius: 4px;
    color: var(--text-primary);
    position: relative;
    transition: var(--transition);
}

.digit-cell:hover {
    border-color: var(--accent-secondary);
    transform: translateY(-2px);
}

.carry-row .digit-cell,
.borrow-row .digit-cell {
    background: transparent;
    border: none;
    min-width: 3rem;
}

.carry-indicator {
    color: var(--accent-danger);
    font-size: 1rem;
    font-weight: 700;
    animation: pulse 1s infinite;
}

.borrow-indicator {
    color: var(--accent-danger);
    font-size: 1rem;
    font-weight: 700;
    animation: pulse 1s infinite;
    text-decoration: line-through;
}

.separator-line {
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent-primary), transparent);
    margin: 1.25rem 0;
    box-shadow: var(--glow-primary);
}

.result-row .digit-cell {
    border-color: var(--accent-primary);
    background: var(--bg-medium);
    box-shadow: var(--glow-primary);
}

.result-digit {
    color: var(--accent-primary);
    font-weight: 700;
}

.partial-product {
    color: var(--text-secondary);
    font-size: 1.25rem;
}

.partial-product .digit-cell {
    background: var(--bg-medium);
    border-color: var(--accent-secondary);
}

.explanation {
    background: var(--bg-medium);
    padding: 2rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--wire-off);
    margin-bottom: 30px;
    box-shadow: var(--shadow-soft);
}

.identity-grid {
    display: grid;
    gap: 16px;
    margin-top: 12px;
}

.identity-card {
    background: var(--bg-medium);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
}

.identity-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--color-border-light);
}

.identity-card .explanation-title {
    margin-bottom: 8px;
}

.identity-card .var-list {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

.explanation-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.5rem;
    color: var(--accent-secondary);
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.explanation-content {
    color: var(--text-secondary);
}

.explanation-intro {
    font-size: 1rem;
    margin-bottom: 1.5rem;
    line-height: 1.8;
    color: var(--text-primary);
}

.highlight {
    color: var(--accent-primary);
    font-weight: 700;
    padding: 0.125rem 0.5rem;
    background: rgba(0, 255, 136, 0.1);
    border-radius: 4px;
}

.hint {
    margin-top: 0.5rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
    opacity: 0.9;
}

.step-detail {
    margin: 1.5rem 0;
    padding: 1rem;
    background: var(--bg-dark);
    border-left: 3px solid var(--accent-secondary);
    border-radius: 4px;
}

.step-header {
    font-weight: 700;
    color: var(--accent-secondary);
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.step-body {
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 0.9rem;
}

.carry-note {
    color: var(--accent-danger);
    font-weight: 700;
    animation: pulse 2s infinite;
}

.borrow-note {
    color: var(--accent-danger);
    font-weight: 700;
    animation: pulse 2s infinite;
}

.final-result {
    margin-top: 2rem;
    padding: 1.5rem;
    background: linear-gradient(135deg, var(--bg-dark), var(--bg-light));
    border: 2px solid var(--accent-primary);
    border-radius: var(--border-radius);
    font-size: 1.25rem;
    text-align: center;
    color: var(--accent-primary);
    box-shadow: var(--glow-primary);
}

.final-result strong {
    color: var(--text-primary);
    margin-right: 1rem;
}

.negative-result {
    padding: 2rem;
    text-align: center;
    color: var(--accent-danger);
    font-size: 1.25rem;
    font-weight: 700;
}

/* Animations */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

@keyframes shimmer {
    0% {
        left: -100%;
    }

    100% {
        left: 100%;
    }
}

.fade-in {
    animation: fadeIn 0.5s ease-out;
}

/* Responsive Design */
@media (max-width: 768px) {
    .calculator-container {
        padding: 1rem;
    }

    .title {
        font-size: 1.75rem;
    }

    .header-content {
        padding: 1rem 2rem;
    }

    .input-group {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .digit-row {
        font-size: 1.25rem;
    }

    .digit-cell {
        min-width: 2.5rem;
        height: 2.5rem;
    }

    .operator-space {
        width: 2.5rem;
    }

    .visual-work {
        padding: 1rem;
    }

    .control-panel,
    .result-card,
    .explanation {
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .title {
        font-size: 1.5rem;
    }

    .digit-row {
        font-size: 1rem;
    }

    .digit-cell {
        min-width: 2rem;
        height: 2rem;
        font-size: 0.875rem;
    }

    .operator-space {
        width: 2rem;
        font-size: 0.875rem;
    }

    .separator-line {
        margin: 0.5rem 2rem;
    }
}

.binary-container {
    min-height: 100vh;
    background-color: var(--bg-dark);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: var(--text-primary);
    padding: 40px 20px;
    box-sizing: border-box;
}

.binary-wrapper {
    max-width: 1200px;
    margin: 0 auto;
}

.binary-main-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 10px;
    margin-top: 0;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    font-weight: 800;
}

.binary-subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 50px;
    font-size: 1.1rem;
}

/* --- Card Styles --- */
.binary-card {
    background: var(--bg-medium);
    border-radius: var(--border-radius);
    padding: 30px;
    margin-bottom: 40px;
    box-shadow: var(--shadow-soft);
    border: 1px solid var(--bg-light);
    transition: var(--transition);
}

.binary-card:hover {
    border-color: var(--text-secondary);
}

.binary-section-title {
    font-size: 1.8rem;
    margin-bottom: 20px;
    margin-top: 0;
    display: flex;
    align-items: center;
    gap: 15px;
}

.binary-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    display: inline-block;
}

.binary-title-primary {
    color: var(--accent-primary);
}

.binary-dot-primary {
    background: var(--accent-primary);
    box-shadow: 0 0 10px var(--accent-primary-glow);
}

.binary-title-secondary {
    color: var(--accent-secondary);
}

.binary-dot-secondary {
    background: var(--accent-secondary);
    box-shadow: 0 0 10px var(--accent-secondary-glow);
}

/* --- Info Box --- */
.binary-info-box {
    background: var(--bg-light);
    padding: 20px;
    border-radius: var(--border-radius);
    margin-bottom: 25px;
}

.binary-info-primary {
    border-left: 4px solid var(--accent-primary);
}

.binary-info-secondary {
    border-left: 4px solid var(--accent-secondary);
}

.binary-info-heading {
    margin-top: 0;
    color: var(--text-primary);
}

.binary-text {
    color: var(--text-secondary);
    line-height: 1.6;
}

.binary-list {
    color: var(--text-secondary);
    line-height: 1.6;
    padding-left: 20px;
}

.binary-highlight-primary {
    color: var(--accent-primary);
    font-weight: bold;
}

.binary-highlight-secondary {
    color: var(--accent-secondary);
    font-weight: bold;
}

/* --- Input Group --- */
.binary-controls-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 25px;
}

@media (max-width: 768px) {
    .binary-controls-grid {
        grid-template-columns: 1fr;
    }
}

.binary-input-group {
    display: flex;
    flex-direction: column;
}

.binary-label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

.binary-input-field {
    width: 100%;
    padding: 12px;
    background: var(--bg-dark);
    border: 2px solid var(--bg-light);
    border-radius: var(--border-radius);
    color: var(--text-primary);
    font-size: 1rem;
    transition: var(--transition);
    outline: none;
    box-sizing: border-box;
}

.binary-input-primary:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-primary-glow);
}

.binary-input-secondary:focus {
    border-color: var(--accent-secondary);
    box-shadow: 0 0 0 3px var(--accent-secondary-glow);
}

/* --- Result Box --- */
.binary-result-box {
    margin-top: 25px;
    padding: 20px;
    background: var(--bg-dark);
    border-radius: var(--border-radius);
    border: 2px solid var(--bg-light);
    word-wrap: break-word;
}

.binary-result-primary {
    border-color: var(--accent-primary);
}

.binary-result-secondary {
    border-color: var(--accent-secondary);
}

.binary-bits-display {
    font-family: 'Courier New', monospace;
    font-size: 1.5rem;
    letter-spacing: 2px;
    display: flex;
    flex-wrap: wrap;
    gap: 2px;
    margin-bottom: 15px;
    word-break: break-all;
}

.binary-sign-bit {
    font-weight: bold;
}

.binary-sb-primary {
    color: var(--accent-danger);
}

.binary-bits-primary {
    color: var(--accent-primary);
}

.binary-bits-secondary {
    color: var(--accent-secondary);
}

.binary-details-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    border-top: 1px solid var(--bg-light);
    padding-top: 15px;
}

.binary-error-msg {
    color: var(--accent-danger);
    text-align: center;
}



.ch1-container {
    min-height: 100vh;
    background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-medium) 100%);
    padding: 2rem;
    font-family: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
    color: var(--text-primary);
}

.ch1-header {
    background: var(--bg-medium);
    border-radius: var(--border-radius);
    padding: 2.5rem;
    margin-bottom: 3rem;
    border: 1px solid rgba(0, 255, 136, 0.2);
    box-shadow: var(--shadow-soft), var(--glow-primary);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.ch1-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
}

.ch1-header-content {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.ch1-icon-wrapper {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border-radius: 12px;
    padding: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--glow-primary);
}

.ch1-main-icon {
    color: var(--bg-dark);
}

.ch1-main-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin: 0;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.ch1-subtitle {
    margin: 0.5rem 0 0 0;
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.ch1-binary-decoration {
    color: var(--accent-primary);
    opacity: 0.3;
    animation: ch1-pulse 2s ease-in-out infinite;
}

@keyframes ch1-pulse {

    0%,
    100% {
        opacity: 0.3;
    }

    50% {
        opacity: 0.6;
    }
}

.ch1-problems-grid {
    display: grid;
    gap: 1.5rem;
    max-width: 1400px;
    margin: 0 auto;
}

.ch1-problem-card {
    background: var(--bg-medium);
    border-radius: var(--border-radius);
    border: 1px solid var(--grid-color);
    overflow: hidden;
    transition: var(--transition);
}

.ch1-problem-card:hover {
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-hard), var(--glow-primary);
    transform: translateY(-2px);
}

.ch1-problem-header {
    width: 100%;
    padding: 1.5rem;
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    position: relative;
    transition: var(--transition);
}

.ch1-problem-header:hover {
    background: rgba(0, 255, 136, 0.05);
}

.ch1-problem-title-section {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.ch1-problem-number {
    font-size: 0.875rem;
    color: var(--accent-primary);
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.ch1-category-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: rgba(0, 255, 136, 0.1);
    border: 1px solid var(--accent-primary);
    border-radius: 12px;
    font-size: 0.75rem;
    color: var(--accent-primary);
    font-weight: 600;
}

.ch1-problem-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.ch1-chevron {
    position: absolute;
    right: 1.5rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--accent-primary);
    transition: transform 0.3s ease;
}

.ch1-chevron.ch1-expanded {
    transform: translateY(-50%) rotate(180deg);
}

.ch1-problem-content {
    padding: 0 1.5rem 1.5rem 1.5rem;
    border-top: 1px solid var(--grid-color);
}

.ch1-question-section,
.ch1-solution-section {
    margin-top: 1.5rem;
}

.ch1-section-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.1rem;
    color: var(--accent-secondary);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid rgba(0, 212, 255, 0.2);
}

.ch1-question-text {
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 0.95rem;
}

.ch1-solution-content {
    background: var(--bg-light);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    border-left: 4px solid var(--accent-primary);
}

.ch1-solution-text {
    color: var(--text-primary);
    line-height: 1.7;
    font-size: 0.95rem;
    margin: 0;
}

.ch1-subsection {
    margin-bottom: 2rem;
}

.ch1-subsection-title {
    font-size: 1rem;
    color: var(--accent-primary);
    margin-bottom: 1rem;
    font-weight: 600;
}

.ch1-scenario {
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: rgba(0, 255, 136, 0.03);
    border-radius: 6px;
    border-left: 3px solid var(--accent-primary);
}

.ch1-scenario-title {
    color: var(--accent-secondary);
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.ch1-waveform-box {
    margin-top: 0.75rem;
    background: var(--bg-dark);
    padding: 1rem;
    border-radius: 4px;
    border: 1px solid var(--grid-color);
}

.ch1-label {
    color: var(--text-secondary);
    font-size: 0.8rem;
    margin-bottom: 0.5rem;
}

.ch1-waveform {
    font-family: 'JetBrains Mono', monospace;
    color: var(--accent-primary);
    margin: 0;
    white-space: pre;
    overflow-x: auto;
    font-size: 0.85rem;
}

@media (max-width: 768px) {
    .ch1-container {
        padding: 1rem;
    }

    .ch1-header {
        padding: 1.5rem;
        flex-direction: column;
        gap: 1rem;
    }

    .ch1-main-title {
        font-size: 1.75rem;
    }

    .ch1-subtitle {
        font-size: 0.95rem;
    }

    .ch1-problem-header {
        padding: 1rem;
    }

    .ch1-chevron {
        right: 1rem;
    }
}

/* ============================================
   COMPUTER SYSTEMS PROBLEM SOLVER STYLESHEET
   Modern Technical Documentation Aesthetic
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;600;700&family=Space+Mono:wght@400;700&family=Recursive:wght@300;400;500;600;700&display=swap');




code,
pre {
    font-family: var(--font-mono);
}

/* ============================================
   CONTAINER
   ============================================ */

.solver-container {
    min-height: 100vh;
    padding: var(--spacing-2xl) var(--spacing-lg);
    background: linear-gradient(135deg, #0a0e1a 0%, #111827 50%, #1a2234 100%);
    position: relative;
}

.solver-container::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        linear-gradient(rgba(96, 165, 250, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(96, 165, 250, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
    z-index: 0;
}

/* ============================================
   HEADER
   ============================================ */

.solver-header {
    background: var(--color-bg-secondary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
    border: 2px solid var(--color-border);
    box-shadow: var(--shadow-xl), var(--shadow-glow);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.solver-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg,
            var(--color-accent-primary) 0%,
            var(--color-accent-amber) 50%,
            var(--color-accent-primary) 100%);
    background-size: 200% 100%;
    animation: shimmer 3s linear infinite;
}

@keyframes shimmer {
    0% {
        background-position: 200% 0;
    }

    100% {
        background-position: -200% 0;
    }
}

.header-content {
    display: flex;
    gap: var(--spacing-lg);
    align-items: center;
    flex: 1;
}

.icon-container {
    background: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-secondary));
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-glow);
    color: var(--color-bg-primary);
}

.header-text {
    flex: 1;
}

.main-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-amber));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-family: var(--font-mono);
    letter-spacing: -0.02em;
}

.subtitle {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    font-weight: 400;
}

.binary-decoration {
    color: var(--color-accent-primary);
    opacity: 0.4;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

/* ============================================
   STATS BAR
   ============================================ */

.stats-bar {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
    justify-content: center;
    flex-wrap: wrap;
    z-index: 1;
    position: relative;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: var(--color-bg-secondary);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    font-weight: 500;
    transition: all var(--transition-base);
}

.stat-item:hover {
    border-color: var(--color-accent-primary);
    background: var(--color-bg-tertiary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.stat-item svg {
    color: var(--color-accent-amber);
}

/* ============================================
   PROBLEMS CONTAINER
   ============================================ */

.problems-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    z-index: 1;
    position: relative;
}

/* ============================================
   PROBLEM CARD
   ============================================ */

.problem-card {
    background: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    border: 2px solid var(--color-border);
    overflow: hidden;
    transition: all var(--transition-base);
    position: relative;
}

.problem-card::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(180deg, var(--color-accent-primary), var(--color-accent-amber));
    opacity: 0;
    transition: opacity var(--transition-base);
}

.problem-card:hover {
    border-color: var(--color-border-light);
    box-shadow: var(--shadow-lg);
    transform: translateY(-3px);
}

.problem-card:hover::before {
    opacity: 1;
}

.problem-card.expanded {
    border-color: var(--color-accent-primary);
    box-shadow: var(--shadow-xl), var(--shadow-glow);
}

.problem-card.expanded::before {
    opacity: 1;
}

/* ============================================
   PROBLEM HEADER
   ============================================ */

.problem-header {
    width: 100%;
    padding: var(--spacing-lg);
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    position: relative;
    transition: background var(--transition-base);
}

.problem-header:hover {
    background: rgba(96, 165, 250, 0.05);
}

.problem-title-row {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.problem-id {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--color-accent-primary);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.category-tag {
    display: inline-flex;
    align-items: center;
    padding: 0.35rem 0.75rem;
    background: rgba(96, 165, 250, 0.1);
    border: 1px solid var(--color-accent-primary);
    border-radius: var(--radius-md);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-accent-primary);
}

.problem-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text-primary);
    line-height: 1.4;
    margin: 0;
    padding-right: 2.5rem;
}

.chevron {
    position: absolute;
    right: var(--spacing-lg);
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-accent-primary);
    transition: transform var(--transition-base);
}

.chevron.rotated {
    transform: translateY(-50%) rotate(180deg);
}

/* ============================================
   PROBLEM CONTENT
   ============================================ */

.problem-content {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    animation: slideDown var(--transition-base) ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.section-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid rgba(96, 165, 250, 0.2);
}

.section-header svg {
    color: var(--color-accent-amber);
}

.section-header h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-accent-primary);
    font-family: var(--font-mono);
    margin: 0;
}

/* ============================================
   QUESTION SECTION
   ============================================ */

.question-section {
    margin-bottom: var(--spacing-xl);
    margin-top: 25px;
    padding: var(--spacing-lg);
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-accent-amber);
}

.question-text {
    color: var(--color-text-secondary);
    line-height: 1.8;
    font-size: 0.95rem;
}

/* ============================================
   SOLUTION SECTION
   ============================================ */

.solution-section {
    margin-bottom: var(--spacing-lg);
}

.solution-content {
    background: var(--color-bg-elevated);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    border: 1px solid var(--color-border);
}

.solution-summary {
    padding: var(--spacing-md);
    background: rgba(16, 185, 129, 0.1);
    border-left: 4px solid var(--color-accent-green);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-secondary);
}

/* ============================================
   SOLUTION PARTS
   ============================================ */

.solution-parts {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.part-section {
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    border: 1px solid var(--color-border);
}

.part-title {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--color-accent-primary);
    margin-bottom: var(--spacing-md);
    font-family: var(--font-mono);
}

.scenario-box {
    background: var(--color-bg-secondary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    border-left: 3px solid var(--color-accent-primary);
}

.scenario-title {
    color: var(--color-accent-amber);
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    font-family: var(--font-mono);
}

.waveform-display {
    background: var(--color-bg-primary);
    border-radius: var(--radius-sm);
    padding: var(--spacing-md);
    margin: var(--spacing-md) 0;
    border: 1px solid var(--color-border);
}

.waveform-label {
    color: var(--color-text-tertiary);
    font-size: 0.8rem;
    margin-bottom: var(--spacing-xs);
    font-family: var(--font-mono);
}

.waveform-visual {
    font-family: var(--font-mono);
    color: var(--color-accent-green);
    font-size: 0.85rem;
    line-height: 1.4;
    overflow-x: auto;
    white-space: pre;
}

.explanation-box {
    background: rgba(96, 165, 250, 0.05);
    border-radius: var(--radius-sm);
    padding: var(--spacing-md);
    margin-top: var(--spacing-md);
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    line-height: 1.7;
}

.key-insight {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: rgba(251, 191, 36, 0.1);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-accent-amber);
    margin-top: var(--spacing-md);
}

.key-insight svg {
    color: var(--color-accent-amber);
    flex-shrink: 0;
    margin-top: 2px;
}

.key-insight span {
    color: var(--color-text-primary);
    font-size: 0.9rem;
    line-height: 1.6;
}

.short-answer-title {
    display: flex;
    color: var(--accent-primary);
}

.short-answer-title svg {
    padding: 5px;
}

/* ============================================
   FORMULA & CONVERSION BOXES
   ============================================ */

.formula-box {
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    border-left: 4px solid var(--color-accent-primary);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    line-height: 1.8;
}

.conversion-block {
    background: var(--color-bg-secondary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    border: 1px solid var(--color-border);
}

.temp-header {
    font-family: var(--font-mono);
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-accent-amber);
    margin-bottom: var(--spacing-md);
}

.steps-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.step-item {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: rgba(96, 165, 250, 0.03);
    border-radius: var(--radius-sm);
}

.result-box {
    background: var(--color-bg-primary);
    border-radius: var(--radius-sm);
    padding: var(--spacing-md);
    margin: var(--spacing-md) 0;
    border: 1px solid var(--color-accent-primary);
}

.result-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-xs) 0;
    font-family: var(--font-mono);
    font-size: 0.9rem;
}

.result-row span {
    color: var(--color-text-tertiary);
}

.result-row code {
    color: var(--color-accent-green);
    font-weight: 600;
}

.concept-box {
    background: rgba(251, 191, 36, 0.1);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    border-left: 4px solid var(--color-accent-amber);
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-top: var(--spacing-lg);
}

/* ============================================
   CONVERSION TABLE
   ============================================ */

.conversion-table {
    overflow-x: auto;
    margin: var(--spacing-md) 0;
}

.conversion-table table {
    width: 100%;
    border-collapse: collapse;
    font-family: var(--font-mono);
    font-size: 0.85rem;
}

.conversion-table th {
    background: var(--color-bg-tertiary);
    color: var(--color-accent-primary);
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: left;
    border-bottom: 2px solid var(--color-accent-primary);
    font-weight: 600;
}

.conversion-table td {
    padding: var(--spacing-sm) var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text-secondary);
}

.conversion-table tr:hover {
    background: rgba(96, 165, 250, 0.05);
}

.conversion-table code {
    color: var(--color-accent-green);
}

/* ============================================
   PATTERNS & TIPS
   ============================================ */

.patterns-box,
.tip-box {
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.patterns-box h6,
.tip-box strong {
    color: var(--color-accent-primary);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-sm);
    display: block;
}

.patterns-box ul {
    list-style: none;
    padding-left: 0;
}

.patterns-box li {
    padding: var(--spacing-xs) 0;
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
}

.patterns-box li::before {
    content: '▸ ';
    color: var(--color-accent-amber);
    font-weight: bold;
    margin-right: var(--spacing-xs);
}

/* ============================================
   EXPLANATION TOGGLE
   ============================================ */

.explanation-toggle {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    background: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-secondary));
    border: none;
    border-radius: var(--radius-lg);
    color: white;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-md);
    margin-top: var(--spacing-lg);
    width: 100%;
    justify-content: center;
}

.explanation-toggle:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.explanation-toggle:active {
    transform: translateY(0);
}

/* ============================================
   DEEP EXPLANATION
   ============================================ */

.deep-explanation {
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin-top: var(--spacing-md);
    border: 2px dashed var(--color-accent-amber);
    animation: slideDown var(--transition-base) ease-out;
}

.deep-content h5 {
    color: var(--color-accent-amber);
    font-family: var(--font-mono);
    font-size: 1rem;
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.deep-content p {
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

/* ============================================
   MORE PROBLEMS NOTICE
   ============================================ */

.more-problems-notice {
    text-align: center;
    padding: var(--spacing-2xl);
    margin-top: var(--spacing-2xl);
    background: var(--color-bg-secondary);
    border-radius: var(--radius-xl);
    border: 2px dashed var(--color-border-light);
    z-index: 1;
    position: relative;
}

.more-problems-notice p {
    color: var(--color-text-secondary);
    font-size: 1.1rem;
    margin: var(--spacing-sm) 0;
}

.more-problems-notice p:first-child {
    color: var(--color-accent-amber);
    font-weight: 600;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 768px) {
    .solver-container {
        padding: var(--spacing-lg) var(--spacing-md);
    }

    .solver-header {
        flex-direction: column;
        padding: var(--spacing-lg);
        gap: var(--spacing-md);
    }

    .header-content {
        flex-direction: column;
        text-align: center;
    }

    .main-title {
        font-size: 1.75rem;
    }

    .subtitle {
        font-size: 0.95rem;
    }

    .stats-bar {
        gap: var(--spacing-sm);
    }

    .stat-item {
        font-size: 0.8rem;
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .problem-title {
        font-size: 1.1rem;
        padding-right: 2rem;
    }

    .chevron {
        right: var(--spacing-md);
    }

    .conversion-table {
        font-size: 0.75rem;
    }
}

/* ============================================
   ACCESSIBILITY
   ============================================ */

@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

button:focus-visible,
a:focus-visible {
    outline: 2px solid var(--color-accent-primary);
    outline-offset: 2px;
}

.converter-container {
    min-height: 100vh;
    background: var(--color-bg-primary);
    padding: var(--spacing-2xl) var(--spacing-md);
    font-family: var(--font-body);
}

/* ============================================
   HEADER
   ============================================ */

.converter-header {
    background: linear-gradient(135deg, var(--color-bg-secondary) 0%, var(--color-bg-tertiary) 100%);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
}

.header-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.icon-wrapper {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-secondary));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-glow);
    flex-shrink: 0;
}

.header-icon {
    width: 36px;
    height: 36px;
    color: white;
}

.main-title {
    font-family: var(--font-mono);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin: 0;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    color: var(--color-text-tertiary);
    font-size: 1rem;
    margin-top: var(--spacing-xs);
    font-family: var(--font-body);
}

/* ============================================
   CONTENT LAYOUT
   ============================================ */

.converter-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    max-width: 1400px;
    margin: 0 auto;
}

/* ============================================
   CONVERSION PANEL
   ============================================ */

.conversion-panel {
    background: var(--color-bg-secondary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
}

.section-title {
    font-family: var(--font-mono);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-accent-primary);
    margin-bottom: var(--spacing-xl);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    letter-spacing: 0.5px;
}

.title-icon {
    font-size: 1.5rem;
}

/* ============================================
   INPUT GROUPS
   ============================================ */

.input-group {
    margin-bottom: var(--spacing-xl);
}

.input-label {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.input-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.value-input {
    background: var(--color-bg-primary);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md) var(--spacing-lg);
    font-family: var(--font-mono);
    font-size: 1.1rem;
    color: var(--color-text-primary);
    transition: all var(--transition-base);
    outline: none;
}

.value-input:focus {
    border-color: var(--color-accent-primary);
    box-shadow: var(--shadow-glow);
    background: var(--color-bg-elevated);
}

.value-input::placeholder {
    color: var(--color-text-muted);
}

.unit-select {
    background: var(--color-bg-primary);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md) var(--spacing-lg);
    font-family: var(--font-mono);
    font-size: 1rem;
    color: var(--color-text-primary);
    cursor: pointer;
    transition: all var(--transition-base);
    outline: none;
}

.unit-select:hover {
    border-color: var(--color-border-light);
}

.unit-select:focus {
    border-color: var(--color-accent-primary);
    box-shadow: var(--shadow-glow);
}

.unit-select option {
    background: var(--color-bg-secondary);
    color: var(--color-text-primary);
    padding: var(--spacing-sm);
}

.unit-select optgroup {
    background: var(--color-bg-tertiary);
    color: var(--color-accent-amber);
    font-weight: 700;
}

/* ============================================
   CONVERSION ARROW
   ============================================ */

.conversion-arrow {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: var(--spacing-lg) 0;
}

.conversion-arrow svg {
    width: 32px;
    height: 32px;
    color: var(--color-accent-secondary);
    animation: bounce 2s infinite;
}

@keyframes bounce {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(10px);
    }
}

/* ============================================
   CONVERT BUTTON
   ============================================ */

.convert-btn {
    width: 100%;
    background: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-secondary));
    border: none;
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg) var(--spacing-xl);
    font-family: var(--font-mono);
    font-size: 1.1rem;
    font-weight: 700;
    color: white;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.convert-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.convert-btn:active {
    transform: translateY(0);
    box-shadow: var(--shadow-md);
}

.btn-icon {
    width: 20px;
    height: 20px;
}

/* ============================================
   RESULT PANEL
   ============================================ */

.result-panel {
    background: linear-gradient(135deg, var(--color-bg-tertiary), var(--color-bg-elevated));
    border: 2px solid var(--color-accent-green);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-top: var(--spacing-xl);
    text-align: center;
    animation: slideIn var(--transition-slow) ease-out;
    box-shadow: 0 0 30px rgba(16, 185, 129, 0.2);
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.result-label {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: var(--spacing-sm);
}

.result-value {
    font-family: var(--font-mono);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-accent-green);
    margin: var(--spacing-sm) 0;
    word-break: break-all;
    text-shadow: 0 0 20px rgba(16, 185, 129, 0.3);
}

.result-unit {
    font-family: var(--font-mono);
    font-size: 1rem;
    color: var(--color-text-secondary);
    margin-top: var(--spacing-sm);
}

/* ============================================
   TABLE PANEL
   ============================================ */

.table-panel {
    background: var(--color-bg-secondary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
}

.table-wrapper {
    overflow-x: auto;
    margin-bottom: var(--spacing-xl);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

/* ============================================
   UNITS TABLE
   ============================================ */

.units-table {
    width: 100%;
    border-collapse: collapse;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    background: var(--color-bg-primary);
}

.units-table thead {
    background: var(--color-bg-tertiary);
    position: sticky;
    top: 0;
    z-index: 10;
}

.units-table th {
    padding: var(--spacing-md) var(--spacing-lg);
    text-align: left;
    font-weight: 700;
    color: var(--color-accent-primary);
    border-bottom: 2px solid var(--color-accent-primary);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.units-table td {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text-secondary);
}

.units-table tbody tr {
    transition: all var(--transition-fast);
}

.units-table tbody tr:hover:not(.category-row) {
    background: rgba(96, 165, 250, 0.05);
}

.category-row {
    background: var(--color-bg-elevated);
}

.category-header {
    font-family: var(--font-mono);
    font-weight: 700;
    color: var(--color-accent-amber);
    padding: var(--spacing-md) var(--spacing-lg);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    font-size: 0.8rem;
    border-top: 2px solid var(--color-border-light);
}

.unit-name {
    font-weight: 600;
    color: var(--color-text-primary);
}

.unit-symbol {
    font-family: var(--font-mono);
    color: var(--color-accent-secondary);
    font-weight: 700;
}

.unit-power {
    font-family: var(--font-mono);
    color: var(--color-accent-amber);
}

.unit-bits {
    font-family: var(--font-mono);
    color: var(--color-accent-green);
    font-weight: 600;
}

/* ============================================
   INFO BOX
   ============================================ */

.info-box {
    background: linear-gradient(135deg, rgba(96, 165, 250, 0.1), rgba(59, 130, 246, 0.05));
    border: 1px solid var(--color-border-accent);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border-left: 4px solid var(--color-accent-primary);
}

.info-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-family: var(--font-mono);
    font-weight: 700;
    color: var(--color-accent-primary);
    margin-bottom: var(--spacing-md);
    font-size: 1rem;
}

.info-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.info-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.info-list li {
    padding: var(--spacing-sm) 0;
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
    display: flex;
    align-items: flex-start;
}

.info-list li::before {
    content: '▸';
    color: var(--color-accent-amber);
    font-weight: bold;
    margin-right: var(--spacing-sm);
    flex-shrink: 0;
}

.info-list li sup {
    font-size: 0.7rem;
    margin: 0 1px;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 1024px) {
    .converter-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .converter-container {
        padding: var(--spacing-lg) var(--spacing-sm);
    }

    .converter-header {
        padding: var(--spacing-lg);
    }

    .header-content {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-md);
    }

    .icon-wrapper {
        width: 48px;
        height: 48px;
    }

    .header-icon {
        width: 28px;
        height: 28px;
    }

    .main-title {
        font-size: 1.75rem;
    }

    .subtitle {
        font-size: 0.9rem;
    }

    .conversion-panel,
    .table-panel {
        padding: var(--spacing-lg);
    }

    .input-row {
        grid-template-columns: 1fr;
    }

    .result-value {
        font-size: 1.75rem;
    }

    .units-table {
        font-size: 0.8rem;
    }

    .units-table th,
    .units-table td {
        padding: var(--spacing-sm) var(--spacing-md);
    }
}

/* ============================================
   ACCESSIBILITY
   ============================================ */

@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .conversion-arrow svg {
        animation: none;
    }
}

button:focus-visible,
input:focus-visible,
select:focus-visible {
    outline: 2px solid var(--color-accent-primary);
    outline-offset: 2px;
}

/* ============================================
   PRINT STYLES
   ============================================ */

@media print {
    .converter-container {
        background: white;
    }

    .convert-btn {
        display: none;
    }

    .conversion-panel,
    .table-panel {
        box-shadow: none;
        border: 1px solid #ccc;
    }
}


.binary-container {
    min-height: 100vh;
    background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-medium) 100%);
    color: var(--text-primary);
    padding: 2rem;
    font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
}

.binary-wrapper {
    max-width: 1200px;
    margin: 0 auto;
}

/* Typography */
.binary-main-title {
    font-size: 3rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.binary-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 3rem;
}

.binary-section-title {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.binary-title-primary {
    color: var(--accent-primary);
}

.binary-title-secondary {
    color: var(--accent-secondary);
}

.binary-info-heading {
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    font-size: 1.2rem;
    font-weight: 600;
}

/* Cards */
.binary-card {
    background: rgba(26, 31, 58, 0.6);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: 2rem;
    margin-bottom: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

/* Info Boxes */
.binary-info-box {
    background: rgba(0, 0, 0, 0.3);
    padding: 1.5rem;
    border-radius: 12px;
    margin-bottom: 1.5rem;
}

.binary-info-primary {
    border-left: 4px solid var(--accent-primary);
}

.binary-info-secondary {
    border-left: 4px solid var(--accent-secondary);
}

.binary-info-tertiary {
    border-left: 4px solid var(--text-secondary);
}

/* Text & Highlights */
.binary-text {
    line-height: 1.7;
    color: var(--text-secondary);
    margin: 0;
}

.binary-highlight-primary {
    color: var(--accent-primary);
    font-weight: 600;
}

.binary-highlight-secondary {
    color: var(--accent-secondary);
    font-weight: 600;
}

.binary-highlight-amber {
    color: var(--accent-amber);
    font-weight: 600;
}

/* Lists */
.binary-list {
    line-height: 1.8;
    color: var(--text-secondary);
}

.binary-list li {
    margin-bottom: 0.5rem;
}

.binary-list strong {
    color: var(--text-primary);
}

/* Dots for Section Titles */
.binary-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    display: inline-block;
    box-shadow: 0 0 10px currentColor;
}

.binary-dot-primary {
    background: var(--accent-primary);
}

.binary-dot-secondary {
    background: var(--accent-secondary);
}

/* Input Controls */
.binary-controls-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.binary-input-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.binary-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.binary-input-field {
    background: rgba(0, 0, 0, 0.4);
    border: 2px solid rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    padding: 0.75rem;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
    width: 100%;
}

.binary-input-field:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(0, 255, 136, 0.1);
}

.binary-input-primary:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(0, 255, 136, 0.1);
}

.binary-input-secondary:focus {
    border-color: var(--accent-secondary);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

/* Select Dropdown */
.binary-select {
    padding: 0.75rem;
    font-size: 1rem;
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 1rem;
    padding-right: 2.5rem;
}

/* Result Boxes */
.binary-result-box {
    background: rgba(0, 0, 0, 0.4);
    padding: 1.5rem;
    border-radius: 12px;
    margin-top: 1.5rem;
}

.binary-result-primary {
    border: 2px solid var(--accent-primary);
}

.binary-result-secondary {
    border: 2px solid var(--accent-secondary);
}

/* Bits Display */
.binary-bits-display {
    font-family: 'Courier New', monospace;
    font-size: 1.8rem;
    text-align: center;
    margin-bottom: 1rem;
    letter-spacing: 2px;
}

.binary-sign-bit {
    font-weight: bold;
    margin-right: 0.5rem;
}

.binary-sb-primary {
    color: var(--accent-danger);
}

.binary-sb-secondary {
    color: var(--accent-secondary);
}

.binary-bits-primary {
    color: var(--accent-primary);
}

.binary-bits-secondary {
    color: var(--accent-secondary);
}

/* Details Grid */
.binary-details-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    font-size: 0.95rem;
}

.binary-details-grid div {
    color: var(--text-secondary);
}

.binary-details-grid strong {
    color: var(--text-primary);
    font-weight: 600;
}

/* Error Message */
.binary-error-msg {
    color: var(--accent-danger);
    text-align: center;
    font-weight: 600;
    font-size: 1.1rem;
}

/* Buttons */
.binary-btn {
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.binary-btn-primary {
    background: var(--accent-primary);
    color: var(--bg-dark);
    margin: 10px;
}

.binary-btn-primary:hover {
    background: var(--accent-secondary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 255, 136, 0.3);
}

.binary-btn-secondary {
    background: var(--accent-secondary);
    color: var(--bg-dark);
}

.binary-btn-secondary:hover {
    background: var(--accent-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 212, 255, 0.3);
}

.binary-btn-outline-primary {
    background: transparent;
    border: 2px solid var(--accent-primary);
    color: var(--accent-primary);
}

.binary-btn-outline-primary:hover {
    background: rgba(0, 255, 136, 0.1);
}

.binary-btn-outline-secondary {
    background: transparent;
    border: 2px solid var(--accent-secondary);
    color: var(--accent-secondary);
}

.binary-btn-outline-secondary:hover {
    background: rgba(0, 212, 255, 0.1);
}

.binary-btn-danger {
    background: var(--accent-danger);
    color: white;
}

.binary-btn-danger:hover {
    background: #dc2626;
}

.binary-btn-disabled {
    background: var(--bg-light);
    color: var(--text-secondary);
    cursor: not-allowed;
    opacity: 0.5;
}

.binary-btn-full {
    width: 100%;
}

/* Toggle Button */
.binary-toggle-btn {
    margin-top: 10px;
    background: transparent;
    border: 1px solid var(--accent-primary);
    color: var(--accent-primary);
    padding: 8px 16px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    width: 100%;
    transition: all 0.2s ease;
}

.binary-toggle-btn:hover {
    background: rgba(0, 255, 136, 0.1);
}

.binary-toggle-btn-secondary {
    border-color: var(--accent-secondary);
    color: var(--accent-secondary);
}

.binary-toggle-btn-secondary:hover {
    background: rgba(0, 212, 255, 0.1);
}

/* Table Styles */
.binary-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.binary-table-container {
    margin-top: 15px;
    max-height: 500px;
    overflow-y: auto;
    border: 1px solid var(--bg-medium);
    border-radius: 8px;
}

.binary-table-header {
    position: sticky;
    top: 0;
    background: var(--bg-medium);
    z-index: 10;
    color: var(--text-secondary);
}

.binary-table-header th {
    padding: 12px;
    text-align: left;
    border-bottom: 2px solid var(--accent-secondary);
}

.binary-table-header-center th {
    text-align: center;
}

.binary-table-row {
    border-bottom: 1px solid var(--bg-dark);
    transition: background 0.2s ease;
}

.binary-table-row:hover {
    background: rgba(0, 212, 255, 0.05);
}

.binary-table-cell {
    padding: 10px 12px;
    color: var(--text-primary);
}

.binary-table-cell-center {
    text-align: center;
}

.binary-table-cell-right {
    text-align: right;
}

.binary-table-cell-mono {
    font-family: monospace;
}

.binary-table-cell-primary {
    color: var(--accent-primary);
    font-weight: bold;
}

.binary-table-cell-secondary {
    color: var(--accent-secondary);
    font-weight: bold;
}

.binary-table-cell-amber {
    color: var(--accent-amber);
}

.binary-table-cell-danger {
    color: var(--accent-danger);
}

.binary-table-category {
    background: var(--bg-light);
    padding: 10px 12px;
    color: var(--accent-amber);
    font-weight: bold;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-top: 2px solid var(--bg-dark);
}

/* Example Box */
.binary-example-box {
    background: rgba(0, 0, 0, 0.2);
    padding: 15px;
    border-radius: 8px;
    margin-top: 10px;
}

/* Reference Section */
.binary-reference-section {
    margin-top: 20px;
}

.binary-reference-title {
    color: var(--text-primary);
    margin-bottom: 10px;
}

/* Comparison Grid */
.binary-comparison-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 15px;
}

.binary-comparison-card {
    padding: 15px;
    border-radius: 8px;
}

.binary-comparison-card-primary {
    background: rgba(0, 255, 136, 0.1);
    border: 2px solid var(--accent-primary);
}

.binary-comparison-card-secondary {
    background: rgba(0, 212, 255, 0.1);
    border: 2px solid var(--accent-secondary);
}

.binary-comparison-title {
    margin-bottom: 10px;
    text-align: center;
    font-weight: 600;
}

/* Warning Box */
.binary-warning-box {
    margin-top: 20px;
    padding: 15px;
    background: rgba(251, 191, 36, 0.1);
    border-radius: 8px;
    border-left: 4px solid var(--accent-amber);
}

.binary-warning-title {
    color: var(--accent-amber);
    margin-bottom: 10px;
    font-weight: 600;
}

/* Input Table */
.binary-input-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

.binary-input-table th,
.binary-input-table td {
    padding: 10px;
    border: 1px solid var(--bg-dark);
}

.binary-input-table th {
    background: var(--bg-medium);
    color: var(--accent-primary);
    font-weight: bold;
    text-align: center;
}

.binary-input-table td {
    background: rgba(0, 0, 0, 0.2);
}

.binary-input-table-field {
    width: 100%;
    background: transparent;
    border: 2px solid rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    padding: 8px;
    border-radius: 4px;
    font-size: 0.95rem;
    text-align: center;
}

.binary-input-table-field:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.binary-input-table-result {
    font-family: monospace;
    font-size: 1rem;
}

/* Responsive */
@media (max-width: 768px) {
    .binary-container {
        padding: 1rem;
    }

    .binary-main-title {
        font-size: 2rem;
    }

    .binary-section-title {
        font-size: 1.4rem;
    }

    .binary-controls-grid {
        grid-template-columns: 1fr;
    }

    .binary-comparison-grid {
        grid-template-columns: 1fr;
    }

    .binary-card {
        padding: 1.5rem;
    }
}

/* Quaternary Section Styling */
.quat-container {
    margin: 20px;
    padding: 24px;
    background: var(--bg-medium);
    border: 1px solid var(--bg-light);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-soft);
}

.quat-dropdown-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: var(--bg-light);
    border: 1px solid var(--accent-secondary);
    border-radius: 4px;
    cursor: pointer;
    transition: var(--transition);
}

.quat-dropdown-header:hover {
    box-shadow: var(--glow-secondary);
}

.quat-title {
    color: var(--accent-secondary);
    font-weight: 700;
    letter-spacing: 1px;
    margin: 0;
}

.quat-content {
    margin-top: 15px;
    padding: 15px;
    background: rgba(0, 0, 0, 0.2);
    border-left: 3px solid var(--accent-secondary);
    animation: fadeIn 0.3s ease;
}

.quat-info-text {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 20px;
}

.quat-interactive-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 20px;
}

.quat-input-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.quat-label {
    font-size: 0.8rem;
    color: var(--accent-primary);
    text-transform: uppercase;
}

.quat-input {
    background: var(--bg-dark);
    border: 2px solid var(--bg-light);
    color: var(--text-primary);
    padding: 12px;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 1.1rem;
    transition: var(--transition);
}

.quat-input:focus {
    border-color: var(--accent-primary);
    outline: none;
    box-shadow: var(--glow-primary);
}

.quat-arrow {
    font-size: 1.2rem;
    color: var(--accent-secondary);
    transition: transform 0.3s ease;
}

.quat-arrow.open {
    transform: rotate(180deg);
}

/* K-Map Generator Enhanced Styles */

.kmap-app {
    min-height: 100vh;
    background: linear-gradient(135deg, var(--bg-dark) 0%, #0d1117 50%, var(--bg-dark) 100%);
    padding: var(--spacing-2xl) var(--spacing-lg);
    font-family: var(--font-body);
    position: relative;
    overflow-x: hidden;
}

.kmap-app::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 30%, rgba(96, 165, 250, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(0, 255, 136, 0.06) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

.kmap-container {
    padding: 70px;
}

.kmap-container-main {
    max-width: 1400px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

/* Header Styles */
.kmap-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
    animation: slideDown 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.kmap-main-title {
    font-size: 3.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-align: center;
    margin-bottom: var(--spacing-md);
    letter-spacing: -1px;
    text-shadow: 0 0 60px rgba(96, 165, 250, 0.3);
}

.kmap-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    font-weight: 400;
    text-align: center;
    margin-bottom: 50px;
    letter-spacing: 2px;
    text-transform: uppercase;
}

/* Card Styles */
.kmap-card {
    background: linear-gradient(135deg, rgba(26, 34, 52, 0.95) 0%, rgba(17, 24, 39, 0.95) 100%);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-xl);
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.kmap-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-primary) 0%, var(--accent-secondary) 50%, var(--accent-primary) 100%);
    background-size: 200% 100%;
    animation: shimmer 3s linear infinite;
}

@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }

    100% {
        background-position: 200% 0;
    }
}

.kmap-card:hover {
    border-color: var(--color-border-accent);
    box-shadow: var(--shadow-glow), var(--shadow-xl);
    transform: translateY(-2px);
}

.kmap-section-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xl);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.kmap-section-title::before {
    content: '';
    width: 4px;
    height: 30px;
    background: linear-gradient(180deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
    border-radius: 2px;
    box-shadow: 0 0 10px var(--accent-primary);
}

/* Input Group Styles */
.kmap-input-group {
    margin-bottom: var(--spacing-xl);
}

.kmap-label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--accent-primary);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: var(--spacing-sm);
    font-family: var(--font-mono);
}

.kmap-input,
.kmap-select {
    width: 100%;
    background: rgba(10, 14, 26, 0.8);
    border: 2px solid var(--color-border);
    color: var(--text-primary);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-family: var(--font-mono);
    font-size: 1.1rem;
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    outline: none;
}

.kmap-input:focus,
.kmap-select:focus {
    border-color: var(--accent-primary);
    box-shadow:
        0 0 0 4px rgba(96, 165, 250, 0.1),
        var(--shadow-glow);
    transform: translateY(-2px);
    background: rgba(10, 14, 26, 0.95);
}

.kmap-input:hover,
.kmap-select:hover {
    border-color: var(--color-border-light);
}

.kmap-input::placeholder {
    color: var(--text-muted);
    font-style: italic;
}

.kmap-helper-text {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: var(--spacing-sm);
    font-style: italic;
}

/* Grid Layouts */
.kmap-controls-grid {
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    display: flex;
    justify-content: center;
    /* align-items: center; */
    flex-direction: column;
}

.kmap-variable-grid {
    display: grid;
    gap: var(--spacing-md);
}

/* Result Box */
.kmap-result-box {
    background: linear-gradient(135deg, rgba(96, 165, 250, 0.1) 0%, rgba(0, 255, 136, 0.05) 100%);
    border: 2px solid var(--accent-secondary);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    font-family: var(--font-mono);
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--accent-secondary);
    text-align: center;
    box-shadow: inset 0 0 20px rgba(96, 165, 250, 0.1);
}

/* Button Styles */
.kmap-btn {
    padding: var(--spacing-md) var(--spacing-xl);
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-mono);
    font-size: 1rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    position: relative;
    overflow: hidden;
    outline: none;
}

.kmap-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.kmap-btn:active::before {
    width: 300px;
    height: 300px;
}

.kmap-btn-primary {
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
    color: var(--bg-dark);
    box-shadow: var(--shadow-glow);
}

.kmap-btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow), var(--shadow-lg);
}

.kmap-btn-primary:active {
    transform: translateY(-1px);
}

.kmap-btn-secondary {
    background: linear-gradient(135deg, var(--accent-secondary) 0%, var(--accent-primary) 100%);
    color: var(--bg-dark);
    box-shadow: var(--shadow-glow-amber);
}

.kmap-btn-secondary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow-amber), var(--shadow-lg);
}

.kmap-btn-secondary:active {
    transform: translateY(-1px);
}

.kmap-btn-outline {
    background: transparent;
    border: 2px solid var(--accent-primary);
    color: var(--accent-primary);
}

.kmap-btn-outline:hover {
    background: rgba(96, 165, 250, 0.1);
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}

.kmap-btn-outline:active {
    transform: translateY(-1px);
}

.kmap-btn-full {
    width: 100%;
}

/* K-Map Grid Styles */
.kmap-wrapper {
    display: flex;
    justify-content: center;
    margin-top: var(--spacing-xl);
    padding: var(--spacing-xl);
    animation: scaleIn 0.5s cubic-bezier(0.34, 1.56, 0.64, 1) 0.2s both;
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.85);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

.kmap-grid-container {
    display: inline-block;
    background: rgba(10, 14, 26, 0.6);
    border: 3px solid var(--accent-primary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow:
        var(--shadow-glow),
        var(--shadow-xl),
        inset 0 0 60px rgba(96, 165, 250, 0.05);
    position: relative;
    backdrop-filter: blur(10px);
}

.kmap-grid-container::after {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg, var(--accent-primary), var(--accent-secondary), var(--accent-primary));
    border-radius: var(--radius-xl);
    z-index: -1;
    opacity: 0.3;
    filter: blur(10px);
}

.kmap-table {
    border-collapse: separate;
    border-spacing: 0;
}

.kmap-corner {
    min-width: 120px;
    height: 70px;
    background: linear-gradient(135deg, var(--bg-medium) 0%, var(--bg-light) 100%);
    border: 2px solid var(--color-border-accent);
    border-bottom-width: 3px;
    border-right-width: 3px;
    position: relative;
}

.kmap-corner::after {
    content: 'K-MAP';
    position: absolute;
    bottom: 8px;
    right: 8px;
    font-size: 0.7rem;
    color: var(--accent-primary);
    opacity: 0.5;
    letter-spacing: 2px;
    font-weight: 800;
}

.kmap-header-cell {
    min-width: 80px;
    height: 70px;
    background: linear-gradient(180deg, rgba(96, 165, 250, 0.15) 0%, rgba(96, 165, 250, 0.05) 100%);
    border: 2px solid var(--color-border-accent);
    border-bottom-width: 3px;
    padding: var(--spacing-md);
    text-align: center;
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 1rem;
    color: var(--accent-secondary);
    transition: all 0.3s ease;
}

.kmap-header-cell:hover {
    background: linear-gradient(180deg, rgba(96, 165, 250, 0.25) 0%, rgba(96, 165, 250, 0.15) 100%);
    color: var(--accent-primary);
}

.kmap-row-header {
    min-width: 120px;
    height: 80px;
    background: linear-gradient(90deg, rgba(96, 165, 250, 0.15) 0%, rgba(96, 165, 250, 0.05) 100%);
    border: 2px solid var(--color-border-accent);
    border-right-width: 3px;
    padding: var(--spacing-md);
    text-align: center;
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 1rem;
    color: var(--accent-secondary);
    transition: all 0.3s ease;
}

.kmap-row-header:hover {
    background: linear-gradient(90deg, rgba(96, 165, 250, 0.25) 0%, rgba(96, 165, 250, 0.15) 100%);
    color: var(--accent-primary);
}

.kmap-cell {
    min-width: 80px;
    height: 80px;
    border: 2px solid var(--color-border);
    text-align: center;
    font-family: var(--font-mono);
    font-size: 1.6rem;
    font-weight: 800;
    cursor: pointer;
    position: relative;
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    overflow: hidden;
}

.kmap-cell::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s ease;
}

.kmap-cell:hover::before {
    left: 100%;
}

.kmap-cell-empty {
    background: rgba(17, 24, 39, 0.5);
    color: var(--text-muted);
}

.kmap-cell-empty:hover {
    background: rgba(30, 40, 66, 0.7);
    transform: scale(1.05);
}

.kmap-cell-filled {
    background: linear-gradient(135deg, rgba(0, 255, 136, 0.25) 0%, rgba(0, 255, 136, 0.15) 100%);
    color: var(--accent-primary);
    border-color: rgba(0, 255, 136, 0.4);
    box-shadow:
        inset 0 0 30px rgba(0, 255, 136, 0.2),
        0 0 20px rgba(0, 255, 136, 0.3);
}

.kmap-cell-filled::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 60%;
    height: 60%;
    background: radial-gradient(circle, rgba(0, 255, 136, 0.4), transparent 70%);
    transform: translate(-50%, -50%);
    border-radius: 50%;
    animation: pulse-glow 2s infinite ease-in-out;
}

@keyframes pulse-glow {

    0%,
    100% {
        opacity: 0.4;
        transform: translate(-50%, -50%) scale(1);
    }

    50% {
        opacity: 0.8;
        transform: translate(-50%, -50%) scale(1.2);
    }
}

.kmap-cell-filled:hover {
    background: linear-gradient(135deg, rgba(0, 255, 136, 0.4) 0%, rgba(0, 255, 136, 0.25) 100%);
    border-color: var(--accent-primary);
    box-shadow:
        inset 0 0 40px rgba(0, 255, 136, 0.3),
        0 0 30px rgba(0, 255, 136, 0.5),
        0 0 50px rgba(0, 255, 136, 0.2);
    transform: scale(1.1);
    z-index: 10;
}

.kmap-cell-value {
    position: relative;
    z-index: 2;
}

.kmap-cell-filled:hover .kmap-cell-value {
    text-shadow: 0 0 15px rgba(0, 255, 136, 0.8);
    transform: scale(1.15);
}

.kmap-cell-dontcare {
    background: linear-gradient(135deg, rgba(251, 191, 36, 0.25) 0%, rgba(251, 191, 36, 0.15) 100%);
    color: var(--color-accent-amber);
    border-color: rgba(251, 191, 36, 0.4);
    box-shadow:
        inset 0 0 30px rgba(251, 191, 36, 0.2),
        0 0 20px rgba(251, 191, 36, 0.3);
}

.kmap-cell-dontcare::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 60%;
    height: 60%;
    background: radial-gradient(circle, rgba(251, 191, 36, 0.4), transparent 70%);
    transform: translate(-50%, -50%);
    border-radius: 50%;
    animation: pulse-amber 2s infinite ease-in-out;
}

@keyframes pulse-amber {

    0%,
    100% {
        opacity: 0.4;
        transform: translate(-50%, -50%) scale(1);
    }

    50% {
        opacity: 0.8;
        transform: translate(-50%, -50%) scale(1.2);
    }
}

.kmap-cell-dontcare:hover {
    background: linear-gradient(135deg, rgba(251, 191, 36, 0.4) 0%, rgba(251, 191, 36, 0.25) 100%);
    border-color: var(--color-accent-amber);
    box-shadow:
        inset 0 0 40px rgba(251, 191, 36, 0.3),
        0 0 30px rgba(251, 191, 36, 0.5),
        0 0 50px rgba(251, 191, 36, 0.2);
    transform: scale(1.1);
    z-index: 10;
}

.kmap-cell-dontcare:hover .kmap-cell-value {
    text-shadow: 0 0 15px rgba(251, 191, 36, 0.8);
    transform: scale(1.15);
}

/* Expression Box */
.kmap-expression-box {
    background: linear-gradient(135deg, rgba(0, 255, 136, 0.1) 0%, rgba(96, 165, 250, 0.1) 100%);
    border: 3px solid var(--accent-primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    margin-top: var(--spacing-xl);
    box-shadow:
        inset 0 0 40px rgba(0, 255, 136, 0.1),
        var(--shadow-glow);
}

.kmap-expression {
    font-family: var(--font-mono);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--accent-primary);
    text-align: center;
    line-height: 1.8;
    word-wrap: break-word;
    text-shadow: 0 0 20px rgba(0, 255, 136, 0.3);
}

/* Info Box */
.kmap-info-box {
    background: rgba(96, 165, 250, 0.05);
    border: 2px solid var(--accent-secondary);
    border-left-width: 4px;
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.kmap-info-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--accent-secondary);
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.kmap-info-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.kmap-info-item {
    padding: var(--spacing-sm) 0;
    padding-left: var(--spacing-xl);
    color: var(--text-secondary);
    position: relative;
    line-height: 1.8;
    transition: all 0.3s ease;
}

.kmap-info-item::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--accent-primary);
    font-size: 1.2rem;
    font-weight: bold;
    transition: all 0.3s ease;
}

.kmap-info-item:hover {
    color: var(--text-primary);
    padding-left: calc(var(--spacing-xl) + 8px);
}

.kmap-info-item:hover::before {
    color: var(--accent-secondary);
    transform: scale(1.3);
}

/* Truth Table */
.kmap-truth-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin-top: var(--spacing-lg);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.kmap-truth-table thead {
    background: linear-gradient(135deg, var(--bg-light) 0%, var(--bg-medium) 100%);
}

.kmap-truth-table th {
    padding: var(--spacing-md);
    font-family: var(--font-mono);
    font-weight: 700;
    color: var(--accent-primary);
    text-transform: uppercase;
    letter-spacing: 1px;
    border-bottom: 3px solid var(--accent-secondary);
    font-size: 0.95rem;
}

.kmap-truth-table tbody tr {
    background: rgba(17, 24, 39, 0.5);
    transition: all 0.3s ease;
}

.kmap-truth-table tbody tr:nth-child(even) {
    background: rgba(26, 34, 52, 0.5);
}

.kmap-truth-table tbody tr:hover {
    background: rgba(96, 165, 250, 0.1);
    /* transform: scale(1.02); */
    box-shadow: 0 4px 12px rgba(96, 165, 250, 0.2);
}

.kmap-truth-table td {
    padding: var(--spacing-md);
    text-align: center;
    font-family: var(--font-mono);
    color: var(--text-primary);
    border-bottom: 1px solid var(--color-border);
}

.kmap-truth-table .minterm-cell {
    color: var(--text-secondary);
    font-weight: 600;
}

.kmap-truth-table .output-1 {
    color: var(--accent-primary);
    font-weight: 800;
    font-size: 1.1rem;
    text-shadow: 0 0 10px rgba(0, 255, 136, 0.5);
}

.kmap-truth-table .output-0 {
    color: var(--text-muted);
}

.kmap-truth-table .output-dontcare {
    color: var(--color-accent-amber);
    font-weight: 800;
    font-size: 1.1rem;
    text-shadow: 0 0 10px rgba(251, 191, 36, 0.5);
}

/* Responsive Design */
@media (max-width: 768px) {
    .kmap-main-title {
        font-size: 2.5rem;
    }

    .kmap-subtitle {
        font-size: 1rem;
    }

    .kmap-card {
        padding: var(--spacing-lg);
    }

    .kmap-controls-grid {
        grid-template-columns: 1fr;
    }

    .kmap-cell,
    .kmap-header-cell,
    .kmap-row-header {
        min-width: 60px;
        height: 60px;
        font-size: 1.2rem;
    }

    .kmap-corner {
        min-width: 90px;
        height: 60px;
    }

    .kmap-expression {
        font-size: 1.4rem;
    }
}

/* Animation delays for staggered card appearance */
.kmap-card:nth-child(1) {
    animation: slideUp 0.5s ease-out 0.1s both;
}

.kmap-card:nth-child(2) {
    animation: slideUp 0.5s ease-out 0.2s both;
}

.kmap-card:nth-child(3) {
    animation: slideUp 0.5s ease-out 0.3s both;
}

.kmap-card:nth-child(4) {
    animation: slideUp 0.5s ease-out 0.4s both;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Import existing styles from the original file */
@import url('/mnt/user-data/uploads/styles.css');

/* Additional styles for grouping guide and animations */

.kmap-grouping-guide {
    background: linear-gradient(135deg, rgba(96, 165, 250, 0.05) 0%, rgba(168, 85, 247, 0.05) 100%);
    border: 2px solid var(--accent-secondary);
}

.kmap-voice-icon {
    display: inline-block;
    margin-right: var(--spacing-sm);
    animation: pulse-icon 2s ease-in-out infinite;
}

@keyframes pulse-icon {

    0%,
    100% {
        transform: scale(1);
        opacity: 1;
    }

    50% {
        transform: scale(1.1);
        opacity: 0.8;
    }
}

.kmap-guide-controls {
    display: flex;
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
}

.kmap-btn-icon {
    background: rgba(96, 165, 250, 0.1);
    border: 2px solid var(--accent-secondary);
    color: var(--accent-secondary);
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1.2rem;
}

.kmap-btn-icon:hover:not(:disabled) {
    background: rgba(96, 165, 250, 0.2);
    transform: scale(1.1);
}

.kmap-btn-icon:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.kmap-explanation-steps {
    margin-top: var(--spacing-xl);
}

.kmap-explanation-step {
    background: rgba(17, 24, 39, 0.5);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    transition: all 0.5s ease;
}

.kmap-explanation-step.active {
    border-color: var(--accent-primary);
    background: linear-gradient(135deg, rgba(0, 255, 136, 0.1) 0%, rgba(96, 165, 250, 0.1) 100%);
    box-shadow: 0 0 30px rgba(0, 255, 136, 0.3);
    transform: scale(1.02);
    animation: stepHighlight 2s ease-in-out infinite;
}

@keyframes stepHighlight {

    0%,
    100% {
        box-shadow: 0 0 30px rgba(0, 255, 136, 0.3);
    }

    50% {
        box-shadow: 0 0 40px rgba(0, 255, 136, 0.5);
    }
}

.kmap-step-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.kmap-step-number {
    background: var(--accent-secondary);
    color: var(--bg-dark);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-weight: 700;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.kmap-step-title {
    color: var(--accent-primary);
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.kmap-step-text {
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 1rem;
}

.kmap-step-visualization {
    background: rgba(96, 165, 250, 0.1);
    border-left: 4px solid var(--accent-primary);
    padding: var(--spacing-md);
    margin-top: var(--spacing-md);
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 1.1rem;
    color: var(--accent-primary);
    font-weight: 700;
}

/* Group cell animations */
.kmap-cell-grouped {
    position: relative;
    z-index: 5;
}

@keyframes groupPulse {

    0%,
    100% {
        transform: scale(1);
        opacity: 1;
    }

    50% {
        transform: scale(1.05);
        opacity: 0.9;
    }
}

.kmap-cell-group-indicator {
    position: absolute;
    bottom: 4px;
    right: 4px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    animation: indicatorPulse 1.5s ease-in-out infinite;
}

@keyframes indicatorPulse {

    0%,
    100% {
        transform: scale(1);
        opacity: 0.8;
    }

    50% {
        transform: scale(1.3);
        opacity: 1;
    }
}

/* Groups legend */
.kmap-groups-legend {
    margin-top: var(--spacing-xl);
    background: rgba(17, 24, 39, 0.5);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.kmap-groups-legend-title {
    color: var(--accent-secondary);
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.kmap-groups-legend-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.kmap-group-legend-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm);
    background: rgba(96, 165, 250, 0.05);
    border-radius: var(--radius-sm);
    transition: all 0.3s ease;
}

.kmap-group-legend-item:hover {
    background: rgba(96, 165, 250, 0.1);
    transform: translateX(8px);
}

.kmap-group-legend-color {
    width: 20px;
    height: 20px;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

.kmap-group-legend-item span {
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 0.95rem;
}

/* Variable input styling */
.kmap-var-input {
    width: 60px;
    text-align: center;
    font-weight: 700;
    font-size: 1.1rem;
    text-transform: uppercase;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .kmap-guide-controls {
        flex-direction: column;
    }

    .kmap-step-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }

    .kmap-group-legend-item {
        flex-wrap: wrap;
    }
}

/* Loading animation for voice */
@keyframes speaking {

    0%,
    100% {
        box-shadow: 0 0 20px rgba(0, 255, 136, 0.3);
    }

    50% {
        box-shadow: 0 0 40px rgba(0, 255, 136, 0.6);
    }
}

.speaking {
    animation: speaking 1s ease-in-out infinite;
}

/* ==================== WHITEBOARD ANIMATION STYLES ==================== */

.whiteboard-container {
    background: linear-gradient(135deg, #1a1f35 0%, #0f1419 100%);
    border: 3px solid var(--accent-primary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    margin: var(--spacing-xl) 0;
    box-shadow:
        0 10px 40px rgba(0, 0, 0, 0.5),
        inset 0 0 60px rgba(0, 255, 136, 0.05);
    position: relative;
    overflow: hidden;
}

.whiteboard-container::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(0, 255, 136, 0.1) 0%, transparent 70%);
    /* animation: rotate-gradient 20s linear infinite; */
}

@keyframes rotate-gradient {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

.whiteboard-content {
    position: relative;
    z-index: 1;
}

.whiteboard-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-primary);
    text-align: center;
    margin-bottom: var(--spacing-xl);
    text-transform: uppercase;
    letter-spacing: 2px;
    text-shadow: 0 0 20px rgba(0, 255, 136, 0.5);
}

.whiteboard-intro {
    text-align: center;
}

.whiteboard-description {
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
}

.whiteboard-rules {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.rule-item {
    background: rgba(96, 165, 250, 0.1);
    border: 2px solid var(--accent-secondary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    transition: all 0.3s ease;
}

.rule-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(96, 165, 250, 0.3);
}

.rule-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.rule-item span:last-child {
    color: var(--text-primary);
    font-weight: 600;
}

/* Whiteboard K-Map */
.whiteboard-kmap {
    margin: var(--spacing-xl) 0;
    padding: var(--spacing-lg);
    background: rgba(0, 0, 0, 0.3);
    border-radius: var(--radius-lg);
}

.whiteboard-kmap-title {
    text-align: center;
    color: var(--accent-secondary);
    font-weight: 700;
    font-size: 1.1rem;
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.whiteboard-table {
    margin: 0 auto;
    border-collapse: separate;
    border-spacing: 8px;
}

.whiteboard-corner,
.whiteboard-header,
.whiteboard-row-header {
    padding: var(--spacing-sm);
    color: var(--accent-secondary);
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 0.95rem;
}

.whiteboard-cell {
    width: 60px;
    height: 60px;
    text-align: center;
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: 700;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    transition: all 0.3s ease;
    position: relative;
}

.whiteboard-cell.has-one {
    background: rgba(0, 255, 136, 0.15);
    color: var(--accent-primary);
}

.whiteboard-cell.has-zero {
    background: rgba(17, 24, 39, 0.5);
    color: var(--text-muted);
}

.whiteboard-cell.in-group {
    border-width: 3px;
    box-shadow:
        0 0 20px currentColor,
        inset 0 0 20px currentColor;
    transform: scale(1.05);
    z-index: 10;
}

@keyframes cellPulse {

    0%,
    100% {
        opacity: 1;
        transform: scale(1.05);
    }

    50% {
        opacity: 0.8;
        transform: scale(1.1);
    }
}

.whiteboard-annotation {
    text-align: center;
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(251, 191, 36, 0.2);
    border: 2px solid var(--color-accent-amber);
    border-radius: var(--radius-md);
    color: var(--color-accent-amber);
    font-weight: 700;
    animation: fadeIn 0.5s ease-out;
}

/* Variable Analysis */
.whiteboard-analysis {
    margin: var(--spacing-xl) 0;
    padding: var(--spacing-lg);
    background: rgba(96, 165, 250, 0.05);
    border: 2px solid var(--accent-secondary);
    border-radius: var(--radius-lg);
}

.whiteboard-section-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--accent-secondary);
    text-align: center;
    margin-bottom: var(--spacing-lg);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.whiteboard-variables {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
}

.variable-column {
    background: rgba(0, 0, 0, 0.3);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
}

.variable-label {
    text-align: center;
    font-weight: 700;
    font-size: 1rem;
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.variable-label.kept {
    background: rgba(34, 197, 94, 0.2);
    color: var(--color-accent-green);
    border: 2px solid var(--color-accent-green);
}

.variable-label.eliminated {
    background: rgba(239, 68, 68, 0.2);
    color: #ef4444;
    border: 2px solid #ef4444;
}

.variable-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    margin: var(--spacing-sm) 0;
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 0.95rem;
    animation: slideInRight 0.5s ease-out;
}

.variable-item.kept-item {
    background: rgba(34, 197, 94, 0.1);
    border-left: 4px solid var(--color-accent-green);
}

.variable-item.eliminated-item {
    background: rgba(239, 68, 68, 0.1);
    border-left: 4px solid #ef4444;
}

.variable-item.empty {
    justify-content: center;
    color: var(--text-muted);
    font-style: italic;
}

.var-name {
    color: var(--accent-primary);
    font-weight: 700;
    font-size: 1.1rem;
}

.var-value {
    color: var(--text-secondary);
}

.var-result {
    color: var(--accent-secondary);
    font-weight: 700;
}

/* Result Term */
.whiteboard-result {
    margin: var(--spacing-xl) 0;
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, rgba(0, 255, 136, 0.1) 0%, rgba(96, 165, 250, 0.1) 100%);
    border: 3px solid var(--accent-primary);
    border-radius: var(--radius-lg);
}

.whiteboard-term-box {
    text-align: center;
}

.term-expression {
    font-family: var(--font-mono);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-primary);
    margin: var(--spacing-md) 0;
    text-shadow: 0 0 30px rgba(0, 255, 136, 0.5);
    animation: glow 2s ease-in-out infinite;
}

@keyframes glow {

    0%,
    100% {
        text-shadow: 0 0 20px rgba(0, 255, 136, 0.5);
    }

    50% {
        text-shadow: 0 0 40px rgba(0, 255, 136, 0.8);
    }
}

.term-explanation {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-top: var(--spacing-md);
}

/* Conclusion Styles */
.whiteboard-conclusion {
    padding: var(--spacing-lg);
}

.conclusion-terms {
    margin-bottom: var(--spacing-xl);
}

.terms-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.term-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: rgba(96, 165, 250, 0.1);
    border: 2px solid var(--accent-secondary);
    border-radius: var(--radius-md);
}

.term-number {
    color: var(--accent-secondary);
    font-weight: 700;
    min-width: 100px;
}

.term-value {
    font-family: var(--font-mono);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--accent-primary);
}

.conclusion-operator {
    text-align: center;
    margin: var(--spacing-xl) 0;
}

.operator-symbol {
    font-size: 3rem;
    color: var(--accent-secondary);
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

.operator-text {
    color: var(--text-secondary);
    font-weight: 700;
    margin-top: var(--spacing-sm);
}

.conclusion-final {
    text-align: center;
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, rgba(0, 255, 136, 0.15) 0%, rgba(96, 165, 250, 0.15) 100%);
    border: 3px solid var(--accent-primary);
    border-radius: var(--radius-lg);
    box-shadow: 0 0 40px rgba(0, 255, 136, 0.3);
}

.final-label {
    color: var(--accent-secondary);
    font-size: 1.2rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: var(--spacing-md);
}

.final-expression {
    font-family: var(--font-mono);
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-primary);
    text-shadow: 0 0 30px rgba(0, 255, 136, 0.6);
}

/* Animation utilities */
.fade-in {
    animation: fadeIn 0.8s ease-out;
}

.fade-in-delayed {
    animation: fadeIn 0.8s ease-out 0.5s both;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Responsive whiteboard */
@media (max-width: 768px) {
    .whiteboard-variables {
        grid-template-columns: 1fr;
    }

    .term-expression {
        font-size: 1.8rem;
    }

    .final-expression {
        font-size: 1.5rem;
    }

    .whiteboard-cell {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }
}