/* ================================
   WOLFRAM 256 RULES DEMO STYLES
   ================================ */

/* Import base variables from main stylesheet */
:root {
    /* Clean academic color palette */
    --primary-bg: #000000;
    --secondary-bg: #111111;
    --panel-bg: #1a1a1a;
    --accent-gold: #d4af37;
    --accent-red: #c53030;
    --text-primary: #ffffff;
    --text-secondary: #d1d5db;
    --text-muted: #9ca3af;
    --border-subtle: #333333;
    --border-accent: #d4af37;
    --shadow-subtle: 0 2px 8px rgba(0, 0, 0, 0.3);

    /* Typography */
    --font-primary: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

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

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.4s ease;
    --transition-slow: 0.6s ease;
    
    /* Border Radius */
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 12px;
}

/* ================================
   GLOBAL STYLES
   ================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-primary);
    background: var(--primary-bg);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ================================
   HEADER STYLES  
   ================================ */
.header {
    background: var(--secondary-bg);
    border-bottom: 1px solid var(--border-subtle);
    padding: var(--spacing-lg) 0;
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    text-align: center;
}

.header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--accent-gold), #f4d03f);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

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

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
}

.nav-link:hover {
    color: var(--accent-gold);
    background: rgba(212, 175, 55, 0.1);
}

/* ================================
   MAIN CONTENT STYLES
   ================================ */
.main-content {
    flex: 1;
    max-width: 1600px;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-lg);
    width: 100%;
}

.intro-section {
    margin-bottom: var(--spacing-xl);
    background: var(--panel-bg);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-subtle);
}

.intro-text h2 {
    color: var(--accent-gold);
    font-size: 1.8rem;
    margin-bottom: var(--spacing-md);
}

.intro-text p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    max-width: 800px;
}

/* ================================
   CONTROLS SECTION
   ================================ */
.controls-section {
    margin-top: var(--spacing-lg);
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    align-items: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-subtle);
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    min-width: 150px;
}

.control-group label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

.control-group input[type="range"] {
    background: var(--secondary-bg);
    height: 4px;
    border-radius: 2px;
    outline: none;
    border: none;
    cursor: pointer;
}

.control-group input[type="range"]::-webkit-slider-thumb {
    appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--accent-gold);
    cursor: pointer;
    box-shadow: 0 0 4px rgba(212, 175, 55, 0.5);
}

.control-group input[type="range"]::-moz-range-thumb {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--accent-gold);
    cursor: pointer;
    border: none;
    box-shadow: 0 0 4px rgba(212, 175, 55, 0.5);
}

/* Button Styles */
.btn {
    padding: var(--spacing-xs) var(--spacing-md);
    border: none;
    border-radius: var(--border-radius-sm);
    font-family: inherit;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-primary {
    background: var(--accent-gold);
    color: var(--primary-bg);
}

.btn-primary:hover {
    background: #c49c28;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(212, 175, 55, 0.3);
}

.btn-secondary {
    background: var(--panel-bg);
    color: var(--text-primary);
    border: 1px solid var(--border-subtle);
}

.btn-secondary:hover {
    background: var(--secondary-bg);
    border-color: var(--accent-gold);
    color: var(--accent-gold);
}

/* ================================
   RULES GRID STYLES
   ================================ */
.rules-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.rule-item {
    background: var(--panel-bg);
    border: 1px solid var(--border-subtle);
    border-radius: var(--border-radius-md);
    overflow: hidden;
    transition: all var(--transition-medium);
    cursor: pointer;
}

.rule-item:hover {
    border-color: var(--accent-gold);
    box-shadow: var(--shadow-subtle);
    transform: translateY(-2px);
}

.rule-item.highlighted {
    border-color: var(--accent-gold);
    box-shadow: 0 0 20px rgba(212, 175, 55, 0.3);
    transform: scale(1.02);
}

.rule-header {
    padding: var(--spacing-sm);
    background: var(--secondary-bg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-subtle);
}

.rule-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--accent-gold);
    margin: 0;
}

.rule-binary {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-muted);
    background: var(--primary-bg);
    padding: 2px 6px;
    border-radius: var(--border-radius-sm);
}

.rule-canvas {
    display: block;
    width: 100%;
    height: auto;
    background: var(--primary-bg);
    image-rendering: pixelated;
    image-rendering: crisp-edges;
}

/* ================================
   LOADING MESSAGE
   ================================ */
.loading-message {
    grid-column: 1 / -1;
    text-align: center;
    padding: var(--spacing-xl);
    font-size: 1.2rem;
    color: var(--text-secondary);
}

/* ================================
   FOOTER STYLES
   ================================ */
.footer {
    background: var(--secondary-bg);
    border-top: 1px solid var(--border-subtle);
    padding: var(--spacing-lg);
    text-align: center;
    color: var(--text-muted);
    margin-top: auto;
}

/* ================================
   RESPONSIVE BREAKPOINTS
   ================================ */
@media (max-width: 1200px) {
    .rules-grid {
        grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
        gap: var(--spacing-md);
    }
}

@media (max-width: 900px) {
    .header h1 {
        font-size: 2rem;
    }
    
    .rules-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
    
    .controls-section {
        flex-direction: column;
        align-items: stretch;
        gap: var(--spacing-md);
    }
    
    .control-group {
        min-width: unset;
    }
}

@media (max-width: 768px) {
    .header-content {
        padding: 0 var(--spacing-md);
    }
    
    .main-content {
        padding: var(--spacing-lg) var(--spacing-md);
    }
    
    .header h1 {
        font-size: 1.8rem;
    }
    
    .subtitle {
        font-size: 1rem;
    }
    
    .header-nav {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .intro-section {
        padding: var(--spacing-md);
    }
    
    .rules-grid {
        grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
        gap: var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    .rules-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-xs);
    }
    
    .rule-item {
        min-height: 160px;
    }
    
    .rule-header {
        padding: var(--spacing-xs);
    }
    
    .rule-title {
        font-size: 0.9rem;
    }
    
    .rule-binary {
        font-size: 0.7rem;
    }
}

/* ================================
   ACCESSIBILITY IMPROVEMENTS
   ================================ */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus styles for keyboard navigation */
.rule-item:focus {
    outline: 2px solid var(--accent-gold);
    outline-offset: 2px;
}

.btn:focus {
    outline: 2px solid var(--accent-gold);
    outline-offset: 2px;
}

input[type="range"]:focus {
    outline: 2px solid var(--accent-gold);
    outline-offset: 2px;
}

/* ================================
   MODAL STYLES
   ================================ */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: modalFadeIn 0.3s ease;
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
        backdrop-filter: blur(0px);
    }
    to {
        opacity: 1;
        backdrop-filter: blur(4px);
    }
}

.modal-content {
    background: var(--panel-bg);
    border: 2px solid var(--border-accent);
    border-radius: var(--border-radius-lg);
    max-width: 90vw;
    max-height: 90vh;
    width: 800px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    animation: modalSlideIn 0.3s ease;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

@keyframes modalSlideIn {
    from {
        transform: scale(0.9) translateY(-20px);
        opacity: 0;
    }
    to {
        transform: scale(1) translateY(0);
        opacity: 1;
    }
}

.modal-header {
    padding: var(--spacing-lg);
    background: var(--secondary-bg);
    border-bottom: 1px solid var(--border-subtle);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-title-section h2 {
    color: var(--accent-gold);
    margin: 0;
    font-size: 1.8rem;
    font-weight: 700;
}

.modal-rule-info {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
    margin-top: var(--spacing-xs);
}

.rule-classification {
    background: var(--primary-bg);
    color: var(--text-secondary);
    padding: 4px 8px;
    border-radius: var(--border-radius-sm);
    font-size: 0.85rem;
}

.modal-close-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 2rem;
    cursor: pointer;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all var(--transition-fast);
}

.modal-close-btn:hover {
    background: var(--accent-red);
    color: white;
    transform: scale(1.1);
}

.modal-body {
    padding: var(--spacing-lg);
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.modal-controls {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    align-items: center;
    padding: var(--spacing-md);
    background: var(--secondary-bg);
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border-subtle);
}

.modal-control-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    min-width: 120px;
}

.modal-control-group label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

.modal-control-buttons {
    display: flex;
    gap: var(--spacing-sm);
}

.modal-control-buttons .btn {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.9rem;
}

.modal-canvas-container {
    background: var(--primary-bg);
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border-subtle);
    padding: var(--spacing-md);
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: auto;
    min-height: 400px;
    max-height: 50vh;
}

.modal-canvas {
    background: var(--primary-bg);
    border-radius: var(--border-radius-sm);
    image-rendering: pixelated;
    image-rendering: crisp-edges;
    max-width: 100%;
    max-height: 100%;
}

.modal-stats {
    display: flex;
    justify-content: space-around;
    padding: var(--spacing-md);
    background: var(--secondary-bg);
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border-subtle);
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
}

.stat-label {
    color: var(--text-muted);
    font-size: 0.8rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-value {
    color: var(--accent-gold);
    font-size: 1.2rem;
    font-weight: 600;
    font-family: var(--font-mono);
}

/* Modal Button States */
.modal-control-buttons .btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.modal-control-buttons .btn:disabled:hover {
    background: var(--accent-gold);
    transform: none;
    box-shadow: none;
}

/* ================================
   MODAL RESPONSIVE BREAKPOINTS
   ================================ */
@media (max-width: 900px) {
    .modal-content {
        width: 95vw;
        max-height: 95vh;
    }
    
    .modal-header {
        padding: var(--spacing-md);
    }
    
    .modal-body {
        padding: var(--spacing-md);
        gap: var(--spacing-md);
    }
    
    .modal-title-section h2 {
        font-size: 1.5rem;
    }
    
    .modal-controls {
        flex-direction: column;
        align-items: stretch;
        gap: var(--spacing-md);
    }
    
    .modal-control-group {
        min-width: unset;
    }
    
    .modal-control-buttons {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .modal-canvas-container {
        min-height: 300px;
        max-height: 40vh;
        padding: var(--spacing-sm);
    }
    
    .modal-stats {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .stat-item {
        flex-direction: row;
        justify-content: space-between;
    }
    
    .modal-rule-info {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }
}

@media (max-width: 480px) {
    .modal-content {
        width: 98vw;
        max-height: 98vh;
    }
    
    .modal-header {
        padding: var(--spacing-sm);
    }
    
    .modal-body {
        padding: var(--spacing-sm);
        gap: var(--spacing-sm);
    }
    
    .modal-title-section h2 {
        font-size: 1.3rem;
    }
    
    .modal-controls {
        padding: var(--spacing-sm);
    }
    
    .modal-control-buttons {
        flex-direction: column;
    }
    
    .modal-control-buttons .btn {
        width: 100%;
    }
    
    .modal-canvas-container {
        min-height: 250px;
        max-height: 35vh;
    }
}