/* ============================================
   TinyFilmFestival Documentation
   Clean Black/White/Gray Design
   ============================================ */

:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #f0f0f0;
    --text-primary: #1a1a1a;
    --text-secondary: #4a4a4a;
    --text-muted: #6c6c6c;
    --border-color: #e0e0e0;
    --border-dark: #d0d0d0;
    --accent: #333333;
    --accent-hover: #000000;
    --code-bg: #f5f5f5;
    --sidebar-width: 280px;
    --mobile-header-height: 56px;
    --transition: 0.2s ease;
}

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
}

/* Mobile Header */
.mobile-header {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--mobile-header-height);
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    padding: 0 16px;
    align-items: center;
    gap: 16px;
}

.mobile-header h1 {
    font-size: 18px;
    font-weight: 600;
}

.menu-toggle {
    background: none;
    border: none;
    width: 40px;
    height: 40px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    transition: background var(--transition);
}

.menu-toggle:hover {
    background: var(--bg-tertiary);
}

.hamburger {
    width: 20px;
    height: 2px;
    background: var(--text-primary);
    position: relative;
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 2px;
    background: var(--text-primary);
    left: 0;
}

.hamburger::before {
    top: -6px;
}

.hamburger::after {
    top: 6px;
}

/* Sidebar */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    overflow-y: auto;
    z-index: 100;
    transition: transform var(--transition);
}

.sidebar-header {
    padding: 24px 20px;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-header h1 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 4px;
}

.version-badge {
    font-size: 0.55em;
    font-weight: 500;
    background: #000;
    color: #fff;
    padding: 2px 7px;
    border-radius: 4px;
    vertical-align: middle;
    letter-spacing: 0.02em;
}

.sidebar-header .tagline {
    font-size: 13px;
    color: var(--text-muted);
}

/* Search */
.search-container {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
    position: relative;
}

#search-input {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: border-color var(--transition), box-shadow var(--transition);
}

#search-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.1);
}

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

.search-results {
    position: absolute;
    top: 100%;
    left: 16px;
    right: 16px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    max-height: 400px;
    overflow-y: auto;
    z-index: 200;
    display: none;
}

.search-results.visible {
    display: block;
}

.search-result {
    display: block;
    padding: 12px 14px;
    text-decoration: none;
    border-bottom: 1px solid var(--border-color);
    transition: background var(--transition);
}

.search-result:last-child {
    border-bottom: none;
}

.search-result:hover {
    background: var(--bg-secondary);
}

.search-method {
    display: block;
    font-family: 'SF Mono', Monaco, monospace;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.search-method mark {
    background: #fff3cd;
    color: inherit;
    padding: 0 2px;
    border-radius: 2px;
}

.search-category {
    display: inline-block;
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    background: var(--bg-tertiary);
    padding: 2px 6px;
    border-radius: 3px;
    margin-right: 8px;
}

.search-desc {
    display: block;
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 4px;
}

.search-no-results {
    padding: 16px;
    text-align: center;
    color: var(--text-muted);
    font-size: 14px;
}

.nav-section {
    padding: 16px 0;
    border-bottom: 1px solid var(--border-color);
}

.nav-section:last-child {
    border-bottom: none;
}

.nav-section h3 {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    padding: 0 20px;
    margin-bottom: 8px;
}

.nav-section ul {
    list-style: none;
}

.nav-section a {
    display: block;
    padding: 8px 20px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: all var(--transition);
    border-left: 3px solid transparent;
}

.nav-section a:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.nav-section a.active {
    background: var(--bg-primary);
    color: var(--accent);
    font-weight: 500;
    border-left-color: var(--accent);
}

/* Expandable Nav Items */
.nav-expandable {
    position: relative;
}

.nav-expand-toggle {
    display: flex !important;
    align-items: center;
    cursor: pointer;
}

.expand-icon {
    display: inline-block;
    width: 16px;
    margin-right: 4px;
    transition: transform 0.2s ease;
    font-weight: bold;
}

.nav-expandable.expanded .expand-icon {
    transform: rotate(90deg);
}

.nav-subitems {
    display: none;
    list-style: none;
    padding-left: 0;
    margin: 0;
    background: var(--bg-tertiary);
}

.nav-expandable.expanded .nav-subitems {
    display: block;
}

.nav-subitems li a {
    padding: 6px 20px 6px 40px;
    font-size: 13px;
    color: var(--text-muted);
    border-left: 3px solid transparent;
}

.nav-subitems li a:hover {
    color: var(--text-primary);
    background: var(--bg-secondary);
}

.nav-subitems li a.active {
    color: var(--accent);
    font-weight: 500;
    border-left-color: var(--accent);
    background: var(--bg-primary);
}

/* Sidebar Overlay (mobile) */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 99;
    opacity: 0;
    transition: opacity var(--transition);
}

/* Main Content */
.content {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    padding: 40px 60px;
    max-width: calc(100% - var(--sidebar-width));
}

/* Typography */
.content h1 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--border-color);
}

.content h2 {
    font-size: 24px;
    font-weight: 600;
    margin-top: 48px;
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-color);
}

.content h3 {
    font-size: 18px;
    font-weight: 600;
    margin-top: 32px;
    margin-bottom: 12px;
}

.content h4 {
    font-size: 16px;
    font-weight: 600;
    margin-top: 24px;
    margin-bottom: 8px;
    color: var(--text-secondary);
}

.content p {
    margin-bottom: 16px;
    max-width: 800px;
}

.example-breadcrumb {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 16px;
    padding: 8px 12px;
    background: var(--bg-secondary);
    border-radius: 4px;
    display: inline-block;
}

.content ul, .content ol {
    margin-bottom: 16px;
    padding-left: 24px;
    max-width: 800px;
}

.content li {
    margin-bottom: 8px;
}

/* Code Blocks */
.content code {
    font-family: 'SF Mono', Monaco, 'Consolas', monospace;
    font-size: 14px;
    background: var(--code-bg);
    padding: 2px 6px;
    border-radius: 4px;
}

.content pre {
    background: var(--code-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px 20px;
    overflow-x: auto;
    margin-bottom: 24px;
    max-width: 100%;
}

.content pre code {
    background: none;
    padding: 0;
    font-size: 13px;
    line-height: 1.5;
}

/* Tables */
.content table {
    width: 100%;
    max-width: 800px;
    border-collapse: collapse;
    margin-bottom: 24px;
    font-size: 14px;
}

.content th, .content td {
    text-align: left;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
}

.content th {
    background: var(--bg-secondary);
    font-weight: 600;
}

.content tr:nth-child(even) {
    background: var(--bg-secondary);
}

/* Matrix Grid */
.matrix-grid {
    font-family: 'SF Mono', Monaco, monospace;
    font-size: 11px;
    background: var(--code-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px;
    overflow-x: auto;
    margin-bottom: 24px;
    line-height: 1.4;
    white-space: pre;
}

/* Info Boxes */
.info-box {
    padding: 16px 20px;
    border-radius: 8px;
    margin-bottom: 24px;
    max-width: 800px;
}

.info-box.note {
    background: var(--bg-tertiary);
    border-left: 4px solid var(--accent);
}

.info-box.warning {
    background: #fff8e6;
    border-left: 4px solid #d4a600;
}

.info-box.tip {
    background: #e8f4e8;
    border-left: 4px solid #2e7d32;
}

.info-box strong {
    display: block;
    margin-bottom: 4px;
}

/* Documentation Images */
.doc-image {
    max-width: 100%;
    height: auto;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin: 16px 0 24px 0;
    display: block;
}

.icon-inline {
    height: 24px;
    width: auto;
    vertical-align: middle;
    display: inline-block;
}

/* Cards / Sections */
.card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px 24px;
    margin-bottom: 16px;
}

.card h4 {
    margin-top: 0;
    margin-bottom: 8px;
}

.card p:last-child {
    margin-bottom: 0;
}

/* Mode Cards Grid */
.mode-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 16px;
    margin-bottom: 32px;
}

.mode-card {
    display: block;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    transition: border-color var(--transition), transform var(--transition);
    text-decoration: none;
    color: inherit;
    cursor: pointer;
}

.mode-card:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
}

.mode-card h4 {
    margin: 0 0 8px 0;
    font-size: 16px;
    color: var(--text-primary);
}

.mode-card p {
    margin: 0 0 12px 0;
    color: var(--text-secondary);
    font-size: 14px;
}

.mode-card code {
    font-size: 12px;
}

/* Example Cards */
.example-list {
    list-style: none;
    padding: 0;
}

.example-list li {
    margin-bottom: 0;
}

.example-link {
    display: block;
    padding: 16px 20px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 8px;
    text-decoration: none;
    color: var(--text-primary);
    transition: all var(--transition);
}

.example-link:hover {
    border-color: var(--accent);
    background: var(--bg-primary);
}

.example-link h5 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 4px;
}

.example-link p {
    font-size: 13px;
    color: var(--text-muted);
    margin: 0;
}

/* API Method */
.api-method {
    margin-bottom: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid var(--border-color);
}

.api-method:last-child {
    border-bottom: none;
}

.api-method h3 {
    font-family: 'SF Mono', Monaco, monospace;
    font-size: 18px;
    background: var(--code-bg);
    display: inline-block;
    padding: 8px 16px;
    border-radius: 6px;
    margin-top: 0;
}

.api-signature {
    font-family: 'SF Mono', Monaco, monospace;
    font-size: 14px;
    background: var(--accent);
    color: white;
    padding: 12px 16px;
    border-radius: 6px;
    margin-bottom: 16px;
    overflow-x: auto;
}

/* Gif Container */
.gif-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.gif-grid img {
    width: 100%;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

/* Links */
.content a {
    color: var(--accent);
    text-decoration: none;
    border-bottom: 1px solid var(--border-color);
    transition: border-color var(--transition);
}

.content a:hover {
    border-bottom-color: var(--accent);
}

/* Responsive */
@media (max-width: 1024px) {
    .content {
        padding: 40px 32px;
    }
}

@media (max-width: 768px) {
    .mobile-header {
        display: flex;
    }

    .sidebar {
        transform: translateX(-100%);
        width: 85%;
        max-width: 320px;
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .sidebar-overlay.visible {
        display: block;
        opacity: 1;
    }

    .content {
        margin-left: 0;
        margin-top: var(--mobile-header-height);
        padding: 24px 16px;
        max-width: 100%;
    }

    .content h1 {
        font-size: 24px;
    }

    .content h2 {
        font-size: 20px;
    }

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

    .content table {
        font-size: 12px;
    }

    .content th, .content td {
        padding: 8px 10px;
    }
}

/* Scrollbar */
.sidebar::-webkit-scrollbar {
    width: 6px;
}

.sidebar::-webkit-scrollbar-track {
    background: transparent;
}

.sidebar::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

.sidebar::-webkit-scrollbar-thumb:hover {
    background: var(--border-dark);
}

/* Prism overrides */
:not(pre) > code[class*="language-"],
pre[class*="language-"] {
    background: var(--code-bg);
}

pre[class*="language-"] {
    border: 1px solid var(--border-color);
    border-radius: 8px;
}

/* Animation */
.content {
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}