/* CSS Variables for Theme Support - Apple Design Language */
:root {
    --bg-primary: #000000;
    --bg-secondary: #1d1d1f;
    --bg-tertiary: #2d2d2f;
    --text-primary: #f5f5f7;
    --text-secondary: #a1a1a6;
    --text-muted: #86868b;
    --accent-primary: #007AFF;
    --accent-secondary: #0051D5;
    --border-color: #424245;
    --success-color: #30d158;
    --error-color: #ff453a;
    --gradient-primary: linear-gradient(135deg, #007AFF 0%, #0051D5 100%);
    --gradient-success: linear-gradient(135deg, #30d158 0%, #28a745 100%);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

[data-theme="light"] {
    --bg-primary: #e5e5e7;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f5f5f7;
    --text-primary: #1d1d1f;
    --text-secondary: #6e6e73;
    --text-muted: #86868b;
    --border-color: #d2d2d7;
    --accent-primary: #007AFF;
    --accent-secondary: #0051D5;
    --price-color: #ff9500;
    --price-color-secondary: #ff6b00;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Interactive dot grid canvas */
#dotCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 40px 20px;
}

/* Header Styles */
header {
    text-align: center;
    margin-bottom: 60px;
    padding-top: 20px;
    position: relative;
}

.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    background: linear-gradient(145deg, var(--bg-secondary), var(--bg-tertiary));
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 10px 16px;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 8px;
    z-index: 1000;

    /* 3D Effect */
    box-shadow:
        0 2px 4px rgba(0, 0, 0, 0.1),
        0 4px 8px rgba(0, 0, 0, 0.05),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.theme-toggle:hover {
    border-color: var(--accent-primary);
    transform: translateY(-3px);
    box-shadow:
        0 4px 12px rgba(0, 122, 255, 0.2),
        0 8px 20px rgba(0, 122, 255, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.theme-toggle:active {
    transform: translateY(-1px);
    box-shadow:
        0 2px 4px rgba(0, 0, 0, 0.15),
        inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

h1 {
    font-size: 3.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 10px;
}

/* Black title in light mode */
[data-theme="light"] h1 {
    background: #000000;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    font-size: 1.2rem;
    color: #000000;
    margin-bottom: 40px;
}

/* Stats Bar */
.stats-bar {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-bottom: 50px;
    padding: 30px;
    background: linear-gradient(145deg, var(--bg-secondary), var(--bg-tertiary));
    border: 1px solid var(--border-color);
    border-radius: 8px;
    flex-wrap: wrap;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;

    /* Subtle 3D Effect */
    box-shadow:
        0 4px 8px rgba(0, 0, 0, 0.1),
        0 8px 16px rgba(0, 0, 0, 0.05),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-top: 5px;
}

/* Search Container */
.search-container {
    max-width: 700px;
    margin: 0 auto 40px;
}

.search-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.search-icon {
    position: absolute;
    left: 18px;
    color: var(--text-muted);
    pointer-events: none;
}

.search-input {
    width: 100%;
    padding: 16px 50px 16px 50px;
    background: linear-gradient(145deg, var(--bg-secondary), var(--bg-tertiary));
    border: 2px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    outline: none;

    /* Subtle 3D Effect */
    box-shadow:
        inset 0 2px 4px rgba(0, 0, 0, 0.1),
        inset 0 1px 2px rgba(0, 0, 0, 0.05);
}

.search-input:focus {
    border-color: var(--accent-primary);
    background: var(--bg-secondary);
    box-shadow: none;
    outline: 2px solid var(--accent-primary);
    outline-offset: 0;
}

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

.clear-search {
    position: absolute;
    right: 14px;
    background: linear-gradient(145deg, var(--bg-tertiary), var(--bg-secondary));
    border: 1px solid var(--border-color);
    padding: 6px;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    color: var(--text-secondary);

    /* 3D Effect */
    box-shadow:
        0 2px 4px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.clear-search:hover {
    background: linear-gradient(145deg, var(--border-color), var(--bg-tertiary));
    color: var(--accent-primary);
    border-color: var(--accent-primary);
    transform: scale(1.05);
    box-shadow:
        0 3px 8px rgba(0, 122, 255, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.clear-search:active {
    transform: scale(0.95);
    box-shadow:
        0 1px 2px rgba(0, 0, 0, 0.15),
        inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

.search-results-count {
    margin-top: 12px;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Filters Container */
.filters-container {
    margin-bottom: 50px;
}

.filter-group {
    margin-bottom: 30px;
}

.filter-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 12px;
    text-align: center;
}

.filters {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
}

.filter-btn {
    padding: 10px 20px;
    background: linear-gradient(145deg, var(--bg-secondary), var(--bg-tertiary));
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 0.9rem;
    font-weight: 500;

    /* 3D Effect */
    box-shadow:
        0 2px 4px rgba(0, 0, 0, 0.1),
        0 4px 8px rgba(0, 0, 0, 0.05),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.filter-btn:hover {
    border-color: var(--accent-primary);
    color: var(--text-primary);
    transform: translateY(-3px);
    box-shadow:
        0 4px 12px rgba(0, 122, 255, 0.2),
        0 8px 20px rgba(0, 122, 255, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.filter-btn.active {
    background: var(--gradient-primary);
    border-color: transparent;
    color: white;
    box-shadow:
        0 4px 12px rgba(0, 122, 255, 0.4),
        0 8px 24px rgba(0, 122, 255, 0.3),
        0 12px 32px rgba(0, 122, 255, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.2),
        inset 0 -1px 0 rgba(0, 0, 0, 0.2);
}

.filter-btn:active {
    transform: translateY(-1px);
    box-shadow:
        0 2px 4px rgba(0, 0, 0, 0.15),
        inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* Sorting Controls */
.sorting-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

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

.sort-select {
    padding: 10px 16px;
    background: linear-gradient(145deg, var(--bg-secondary), var(--bg-tertiary));
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 5px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);

    /* 3D Effect */
    box-shadow:
        0 2px 4px rgba(0, 0, 0, 0.1),
        0 4px 8px rgba(0, 0, 0, 0.05),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.sort-select:hover {
    border-color: var(--accent-primary);
    box-shadow:
        0 4px 12px rgba(0, 122, 255, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.sort-select:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow:
        0 0 0 3px rgba(0, 122, 255, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.comparison-toggle {
    padding: 10px 20px;
    background: linear-gradient(145deg, var(--bg-secondary), var(--bg-tertiary));
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 5px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    gap: 8px;

    /* 3D Effect */
    box-shadow:
        0 2px 4px rgba(0, 0, 0, 0.1),
        0 4px 8px rgba(0, 0, 0, 0.05),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.comparison-toggle:hover {
    border-color: var(--accent-primary);
    transform: translateY(-3px);
    box-shadow:
        0 4px 12px rgba(0, 122, 255, 0.2),
        0 8px 20px rgba(0, 122, 255, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.comparison-toggle.active {
    background: var(--gradient-primary);
    border-color: transparent;
    color: white;
    box-shadow:
        0 4px 12px rgba(0, 122, 255, 0.4),
        0 8px 24px rgba(0, 122, 255, 0.3),
        0 12px 32px rgba(0, 122, 255, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.2),
        inset 0 -1px 0 rgba(0, 0, 0, 0.2);
}

.comparison-toggle:active {
    transform: translateY(-1px);
    box-shadow:
        0 2px 4px rgba(0, 0, 0, 0.15),
        inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* Category Section */
.category-section {
    margin-bottom: 60px;
}

.category-title {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 30px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 15px;
}

.category-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
}

/* Models Grid */
.models-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
    gap: 24px;
}

/* Model Card */
.model-card {
    background: linear-gradient(145deg, var(--bg-secondary), var(--bg-tertiary));
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 28px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;

    /* 3D Effect - Multiple shadows for depth */
    box-shadow:
        0 1px 3px rgba(0, 0, 0, 0.2),
        0 2px 6px rgba(0, 0, 0, 0.15),
        inset 0 1px 0 rgba(255, 255, 255, 0.05),
        inset 0 -1px 0 rgba(0, 0, 0, 0.1);
}

.model-card:hover {
    border-color: var(--accent-primary);
    transform: translateY(-2px) scale(1.01);

    /* Enhanced 3D depth on hover */
    box-shadow:
        0 2px 8px rgba(0, 122, 255, 0.3),
        0 4px 16px rgba(0, 122, 255, 0.2),
        0 8px 24px rgba(0, 122, 255, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.1),
        inset 0 -1px 0 rgba(0, 0, 0, 0.15);
}

.model-card.comparing {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 2px var(--accent-primary);
}

.compare-checkbox {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 24px;
    height: 24px;
    cursor: pointer;
    accent-color: var(--accent-primary);
}

.model-header {
    margin-bottom: 20px;
}

.model-name {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.model-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 12px;
}

.meta-tag {
    font-size: 0.85rem;
    padding: 4px 12px;
    background: var(--bg-tertiary);
    border-radius: 3px;
    color: var(--text-secondary);
}

.pricing-tag {
    background: linear-gradient(145deg, rgba(255, 149, 0, 0.25), rgba(255, 107, 0, 0.15));
    border: 1px solid rgba(255, 149, 0, 0.4);
    color: #ff9500;
    font-weight: 600;

    /* 3D Effect for pricing */
    box-shadow:
        0 2px 4px rgba(255, 149, 0, 0.2),
        0 4px 8px rgba(255, 149, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.15),
        inset 0 -1px 0 rgba(0, 0, 0, 0.1);
}

/* Enhanced pricing color in light mode */
[data-theme="light"] .pricing-tag {
    background: linear-gradient(145deg, rgba(255, 149, 0, 0.2), rgba(255, 107, 0, 0.12));
    border: 1px solid rgba(255, 149, 0, 0.5);
    color: #ff6b00;
}

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

.release-date {
    color: var(--text-secondary);
}

.model-description {
    color: var(--text-secondary);
    margin-bottom: 15px;
    font-size: 0.95rem;
    line-height: 1.6;
}

.video-demo-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: linear-gradient(145deg, rgba(0, 122, 255, 0.1), rgba(0, 81, 213, 0.05));
    border: 1px solid rgba(0, 122, 255, 0.3);
    border-radius: 8px;
    color: var(--accent-primary);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 20px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);

    /* 3D Effect */
    box-shadow:
        0 1px 3px rgba(0, 122, 255, 0.15),
        0 2px 6px rgba(0, 122, 255, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.video-demo-link svg {
    flex-shrink: 0;
}

.video-demo-link:hover {
    background: linear-gradient(145deg, rgba(0, 122, 255, 0.2), rgba(0, 81, 213, 0.15));
    border-color: rgba(0, 122, 255, 0.5);
    transform: translateY(-2px);

    /* Enhanced 3D depth on hover */
    box-shadow:
        0 2px 8px rgba(0, 122, 255, 0.25),
        0 4px 16px rgba(0, 122, 255, 0.15),
        inset 0 1px 0 rgba(255, 255, 255, 0.12);
}

.video-demo-link:active {
    transform: translateY(0);
    box-shadow:
        0 1px 2px rgba(0, 122, 255, 0.2),
        inset 0 2px 4px rgba(0, 0, 0, 0.15);
}

.features-section {
    margin-top: 20px;
}

.features-title {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag {
    padding: 8px 14px;
    background: linear-gradient(145deg, rgba(0, 122, 255, 0.15), rgba(0, 81, 213, 0.1));
    border: 1px solid rgba(0, 122, 255, 0.3);
    border-radius: 16px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--accent-primary);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    cursor: pointer;

    /* 3D Effect - Multiple shadows for depth */
    box-shadow:
        0 1px 3px rgba(0, 122, 255, 0.2),
        0 2px 6px rgba(0, 122, 255, 0.15),
        inset 0 1px 0 rgba(255, 255, 255, 0.1),
        inset 0 -1px 0 rgba(0, 0, 0, 0.1);
}


.tag:hover {
    background: linear-gradient(145deg, rgba(0, 122, 255, 0.25), rgba(0, 81, 213, 0.2));
    border-color: rgba(0, 122, 255, 0.5);
    transform: translateY(-2px) scale(1.02);

    /* Enhanced 3D depth on hover */
    box-shadow:
        0 2px 8px rgba(0, 122, 255, 0.3),
        0 4px 16px rgba(0, 122, 255, 0.2),
        0 8px 24px rgba(0, 122, 255, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.15),
        inset 0 -1px 0 rgba(0, 0, 0, 0.15);
}

.tag:active {
    transform: translateY(0) scale(0.98);

    /* Pressed state - shadows move inward */
    box-shadow:
        0 1px 2px rgba(0, 122, 255, 0.2),
        inset 0 2px 4px rgba(0, 0, 0, 0.2),
        inset 0 -1px 0 rgba(255, 255, 255, 0.05);
}

/* Comparison Modal */
.comparison-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 1000;
    overflow-y: auto;
    padding: 40px 20px;
}

.comparison-modal.active {
    display: block;
}

.comparison-content {
    max-width: 1400px;
    margin: 0 auto;
    background: var(--bg-secondary);
    border-radius: 16px;
    padding: 40px;
    position: relative;
}

.comparison-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.comparison-title {
    font-size: 2rem;
    font-weight: 600;
    color: var(--text-primary);
}

.close-comparison {
    background: linear-gradient(145deg, var(--bg-tertiary), var(--bg-secondary));
    border: 1px solid var(--border-color);
    padding: 10px;
    border-radius: 5px;
    cursor: pointer;
    color: var(--text-primary);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);

    /* 3D Effect */
    box-shadow:
        0 2px 4px rgba(0, 0, 0, 0.1),
        0 4px 8px rgba(0, 0, 0, 0.05),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.close-comparison:hover {
    background: linear-gradient(145deg, var(--border-color), var(--bg-tertiary));
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    transform: scale(1.05);
    box-shadow:
        0 4px 12px rgba(0, 122, 255, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.close-comparison:active {
    transform: scale(0.95);
    box-shadow:
        0 2px 4px rgba(0, 0, 0, 0.15),
        inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

.comparison-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

/* Footer */
footer {
    text-align: center;
    padding: 40px 20px;
    margin-top: 60px;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
}

/* Responsive Design */
@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }

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

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

    .stats-bar {
        gap: 20px;
        padding: 20px;
    }

    .stat-number {
        font-size: 2rem;
    }

    .theme-toggle {
        position: static;
        margin: 0 auto 20px;
    }

    .sorting-controls {
        flex-direction: column;
        gap: 12px;
    }

    .comparison-content {
        padding: 20px;
    }

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

@media (max-width: 480px) {
    h1 {
        font-size: 2rem;
    }

    .subtitle {
        font-size: 1rem;
    }

    .model-card {
        padding: 20px;
    }

    .model-name {
        font-size: 1.25rem;
    }
}

/* Accessibility Improvements */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

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

/* Print Styles */
@media print {
    .theme-toggle,
    .search-container,
    .filters-container,
    .sorting-controls {
        display: none;
    }

    .model-card {
        break-inside: avoid;
    }
}