/* --- Variables & Reset --- */
:root {
    --bg-main: #0f0f0f;
    --bg-card: #1e1e1e;
    --bg-glass: rgba(18, 18, 18, 0.85);
    --text-main: #ffffff;
    --text-muted: #a0a0a0;
    --accent: #00d4ff; /* Electric Blue */
    --accent-hover: #00b8dc;
    --radius: 8px;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 2rem;
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-main);
    overflow-x: hidden;
}

/* Custom Slim Scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-main); }
::-webkit-scrollbar-thumb { background: #333; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #555; }

/* --- Header & Search --- */
.app-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--bg-glass);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255,255,255,0.05);
    padding: var(--space-md) var(--space-lg);
}

.header-content {
    max-width: 1600px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.logo { font-weight: 700; font-size: 1.5rem; letter-spacing: -0.5px; }
.accent { color: var(--accent); }

.search-wrapper { position: relative; width: 100%; max-width: 400px; }
.search-icon {
    position: absolute; left: 12px; top: 50%;
    transform: translateY(-50%); width: 20px; height: 20px; color: var(--text-muted);
}

input[type="text"] {
    width: 100%;
    background: #2a2a2a;
    border: 1px solid transparent;
    color: white;
    padding: 10px 10px 10px 40px;
    border-radius: 50px;
    font-size: 1rem;
    outline: none;
    transition: var(--transition);
}

input[type="text"]:focus { border-color: var(--accent); background: #333; }

/* --- Gallery Grid --- */
main { padding: var(--space-lg); max-width: 1600px; margin: 0 auto; min-height: 100vh; }

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-lg);
}

.status-message {
    text-align: center; color: var(--text-muted); margin-top: 3rem; font-size: 1.2rem;
}

/* --- Video Card --- */
.video-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    overflow: hidden;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    box-shadow: 0 4px 6px rgba(0,0,0,0.3);
}

.video-card:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 12px 20px rgba(0,0,0,0.5);
}

.thumbnail-wrapper {
    width: 100%;
    aspect-ratio: 16/9;
    position: relative;
    background: #000;
    overflow: hidden;
}

.thumbnail-wrapper video,
.thumbnail-wrapper img {
    width: 100%; 
    height: 100%; 
    object-fit: cover;
    display: block;
}

.card-thumbnail {
    background: #000;
}

.duration-badge {
    position: absolute;
    bottom: 8px;
    right: 8px;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.play-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0);
    transition: var(--transition);
    opacity: 0;
}

.video-card:hover .play-overlay {
    background: rgba(0, 0, 0, 0.4);
    opacity: 1;
}

.play-icon {
    width: 50px;
    height: 50px;
    color: var(--accent);
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.5));
}

/* --- Modal / Lightbox --- */
.modal-overlay {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(8px);
    z-index: 1000;
    display: flex; justify-content: center; align-items: center;
    opacity: 0; visibility: hidden;
    transition: opacity 0.3s ease;
}

.modal-overlay.active { opacity: 1; visibility: visible; }

.modal-content {
    background: var(--bg-card);
    width: 90%; max-width: 1000px;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    position: relative;
    animation: slideUp 0.4s ease-out;
    pointer-events: auto;
}

@keyframes slideUp { from { transform: translateY(50px); } to { transform: translateY(0); } }

.close-btn {
    position: absolute; top: 15px; right: 15px;
    background: rgba(0,0,0,0.5); color: white;
    border: none; width: 36px; height: 36px; border-radius: 50%;
    font-size: 24px; cursor: pointer; z-index: 10;
    display: flex; align-items: center; justify-content: center;
    transition: var(--transition);
}
.close-btn:hover { background: var(--accent); }

.video-wrapper {
    position: relative;
    width: 100%;
}

.video-wrapper video { 
    width: 100%; 
    display: block; 
    max-height: 70vh; 
    background: #000;
    pointer-events: auto;
}

.seeking-indicator {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    background: rgba(0, 0, 0, 0.75);
    padding: 20px 30px;
    border-radius: 8px;
    color: #fff;
    font-size: 14px;
    z-index: 10;
}

.spinner {
    width: 30px;
    height: 30px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top: 3px solid var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.modal-info {
    padding: var(--space-md) var(--space-lg);
    display: flex; justify-content: space-between; align-items: center;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.download-btn {
    display: flex; align-items: center; gap: 8px;
    background: var(--accent); color: #000;
    padding: 10px 20px; border-radius: 4px;
    text-decoration: none; font-weight: 600; font-size: 0.9rem;
    transition: var(--transition);
}

.download-btn:hover { background: var(--accent-hover); }
.download-btn svg { width: 18px; height: 18px; }

/* Mobile Adjustments */
@media (max-width: 600px) {
    .modal-info { flex-direction: column; gap: var(--space-md); align-items: flex-start; }
    .download-btn { width: 100%; justify-content: center; }
    .header-content { flex-direction: column; align-items: stretch; }
}