/* Theme Styles */

/* Light Theme (Default) */
:root {
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-accent: #f1f5f9;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --card-bg: rgba(255, 255, 255, 0.8);
    --shadow-color: rgba(0, 0, 0, 0.1);
    --glow-color: rgba(99, 102, 241, 0.3);
}

/* Dark Theme */
[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-accent: #334155;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --border-color: #334155;
    --card-bg: rgba(30, 41, 59, 0.8);
    --shadow-color: rgba(0, 0, 0, 0.3);
    --glow-color: rgba(99, 102, 241, 0.5);
}

/* Apply theme variables */
body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: background-color 0.5s ease, color 0.5s ease;
}

/* Header theme adaptation */
header {
    background-color: var(--bg-secondary);
    border-bottom-color: var(--border-color);
}

/* Navigation theme adaptation */
.nav-menu a {
    color: var(--text-primary);
}

.nav-menu a:hover {
    background: var(--card-bg);
    color: var(--primary-color);
}

/* Control buttons theme adaptation */
.control-btn {
    background: var(--card-bg);
    border-color: var(--border-color);
    color: var(--text-primary);
}

.control-btn:hover {
    background: var(--primary-color);
    color: white;
}

/* Language switcher theme adaptation */
.lang-btn {
    background: var(--card-bg);
    border-color: var(--border-color);
    color: var(--text-primary);
}

.lang-btn.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

/* Feature cards theme adaptation */
.feature-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.feature-card h3 {
    color: var(--primary-color);
}

/* Demo containers theme adaptation */
.demo-container {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

/* Canvas backgrounds */
#particles-canvas, #sorting-canvas, #audio-canvas, #threejs-container {
    background: var(--bg-accent);
    border: 1px solid var(--border-color);
}

/* Controls panel theme adaptation */
.controls-panel {
    background: var(--bg-accent);
    border: 1px solid var(--border-color);
}

/* Buttons theme adaptation */
.demo-btn {
    background: var(--primary-color);
    color: white;
    border: none;
}

.demo-btn:hover {
    background: var(--secondary-color);
}

/* Game stats theme adaptation */
.game-stats {
    background: var(--bg-accent);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.stat-label {
    color: var(--text-secondary);
}

/* Target button theme adaptation */
#target {
    box-shadow: 0 0 20px var(--glow-color);
}

#target.ready {
    box-shadow: 0 0 30px rgba(16, 185, 129, 0.5);
}

#target.clicked {
    box-shadow: 0 0 30px rgba(239, 68, 68, 0.5);
}

/* Visualization buttons theme adaptation */
.viz-type-btn {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.viz-type-btn.active {
    background: var(--primary-color);
    color: white;
}

/* About section theme adaptation */
.tech-stack li::before, .features li::before {
    color: var(--primary-color);
}

/* Footer theme adaptation */
footer {
    background: var(--card-bg);
    border-top: 1px solid var(--border-color);
    color: var(--text-primary);
}

/* Form elements theme adaptation */
select, input[type="range"] {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

select:focus, input[type="range"]:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Scrollbar theme adaptation */
::-webkit-scrollbar {
    width: 12px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 6px;
}

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

/* Selection theme adaptation */
::selection {
    background: var(--primary-color);
    color: white;
}

/* Focus states for accessibility */
*:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .floating, .morphing-shape, .gradient-shift {
        animation: none;
    }
}

/* High contrast mode */
@media (prefers-contrast: high) {
    :root {
        --border-color: #000000;
        --shadow-color: rgba(0, 0, 0, 0.5);
    }
    
    [data-theme="dark"] {
        --border-color: #ffffff;
    }
    
    .feature-card, .demo-container {
        border-width: 2px;
    }
}

/* Print styles */
@media print {
    header, .language-switcher, .controls, footer {
        display: none;
    }
    
    main {
        margin-top: 0;
        padding: 1rem;
    }
    
    .demo-section {
        break-inside: avoid;
        page-break-inside: avoid;
    }
    
    body {
        background: white;
        color: black;
    }
}