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

:root {
    /* Dark Theme Colors */
    --bg-primary: #0f1419;
    --bg-secondary: #1a1f2e;
    --bg-tertiary: #252d3a;
    --text-primary: #e1e8ed;
    --text-secondary: #8899a6;
    --text-tertiary: #657786;
    --accent-primary: #1d9bf0;
    --accent-secondary: #1a8cd8;
    --accent-hover: #1a8cd8;
    --border-color: #2f3336;
    --card-bg: #1a1f2e;
    --input-bg: #252d3a;
    --input-border: #3a4556;
    --input-text: #e1e8ed;
    --success-color: #00ba7c;
    --error-color: #e0245e;
    --thumbnail-bg: #252d3a;
    --hover-bg: #252d3a;
    --shadow-color: rgba(0, 0, 0, 0.3);
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

.header {
    margin-bottom: 2rem;
}

.title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 1.5rem;
}

.search-form {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.search-input {
    flex: 1;
    padding: 0.75rem 1rem;
    border: 2px solid var(--input-border);
    border-radius: 0.5rem;
    font-size: 1rem;
    background: var(--input-bg);
    color: var(--input-text);
    transition: border-color 0.2s;
}

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

.search-button,
.clear-button {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 0.5rem;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.search-button {
    background: var(--accent-primary);
    color: white;
}

.search-button:hover {
    background: var(--accent-hover);
}

.clear-button {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

.clear-button:hover {
    background: var(--border-color);
}

.loading-container {
    text-align: center;
    padding: 4rem 1rem;
}

.spinner {
    width: 3rem;
    height: 3rem;
    border: 4px solid var(--bg-tertiary);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

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

.empty-state {
    text-align: center;
    padding: 4rem 1rem;
}

.empty-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    color: var(--text-tertiary);
}

.empty-state h2 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.empty-state p {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* Gallery Grid */
.video-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.video-card {
    background: var(--card-bg);
    border-radius: 1rem;
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.2s;
    border: 1px solid var(--border-color);
    box-shadow: 0 2px 8px var(--shadow-color);
}

.video-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--shadow-color);
}

/* Thumbnail Container */
.thumbnail-container {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%;
    /* 16:9 aspect ratio */
    background: var(--thumbnail-bg);
    overflow: hidden;
}

.thumbnail {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

.video-card:hover .thumbnail {
    transform: scale(1.05);
}

.thumbnail-fallback {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 3rem;
    font-weight: bold;
}

.duration-overlay {
    position: absolute;
    bottom: 8px;
    right: 8px;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.875rem;
    font-weight: 500;
}

/* Card Content */
.card-content {
    padding: 1rem;
}

.card-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    line-height: 1.3;
    height: 2.6em;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.card-description {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
    line-height: 1.4;
    height: 2.8em;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.card-stats {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.card-button {
    display: block;
    width: 100%;
    text-align: center;
    padding: 0.75rem;
    background: var(--accent-primary);
    color: white;
    text-decoration: none;
    border-radius: 0.5rem;
    font-weight: 500;
    transition: background-color 0.2s;
}

.card-button:hover {
    background: var(--accent-hover);
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin-top: 2rem;
}

.pagination-button {
    padding: 0.75rem 1.5rem;
    border: 2px solid var(--border-color);
    background: var(--card-bg);
    border-radius: 0.5rem;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    color: var(--text-primary);
}

.pagination-button:hover:not(:disabled) {
    background: var(--hover-bg);
    border-color: var(--accent-primary);
}

.pagination-button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.pagination-info {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* Watch Page */
.watch-container {
    padding: 2rem 0;
}

.watch-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

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

.video-section h2 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.video-player {
    width: 100%;
    border-radius: 0.75rem;
    background: #000;
    margin-bottom: 1rem;
}

.back-button {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: 0.5rem;
    font-weight: 500;
    transition: background-color 0.2s;
}

.back-button:hover {
    background: var(--hover-bg);
}

.metadata-panel {
    padding: 1.5rem;
    background: var(--card-bg);
    border-radius: 0.75rem;
    border: 1px solid var(--border-color);
    box-shadow: 0 2px 8px var(--shadow-color);
}

.metadata-panel h3 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.metadata-panel p {
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.metadata-panel strong {
    color: var(--text-primary);
}

/* PIN Protection */
.pin-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 20, 25, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.pin-container {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: 0 8px 32px var(--shadow-color);
    text-align: center;
    min-width: 300px;
}

.pin-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.pin-description {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.pin-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--input-border);
    border-radius: 0.5rem;
    font-size: 1rem;
    background: var(--input-bg);
    color: var(--input-text);
    text-align: center;
    margin-bottom: 1rem;
    letter-spacing: 0.5rem;
}

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

.pin-button {
    width: 100%;
    padding: 0.75rem 1.5rem;
    background: var(--accent-primary);
    color: white;
    border: none;
    border-radius: 0.5rem;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s;
}

.pin-button:hover {
    background: var(--accent-hover);
}

.pin-error {
    color: var(--error-color);
    font-size: 0.875rem;
    margin-top: 0.5rem;
}