/* ==================================================
   🌐 GENERAL DESIGN SYSTEM
================================================== */
:root {
    --primary: #2563eb;
    --secondary: #16a34a;
    --accent: #facc15;

    --light-bg: #f8fafc;
    --card-bg: #ffffff;
    --dark-text: #0f172a;
    --gray-text: #64748b;

    --radius-sm: 8px;
    --radius: 12px;
    --radius-lg: 16px;

    --shadow-sm: 0 2px 6px rgba(0,0,0,0.06);
    --shadow: 0 10px 30px rgba(15,23,42,0.12);
    --shadow-lg: 0 20px 50px rgba(15,23,42,0.18);

    --transition: all 0.35s ease;
    --font: "Inter", "Segoe UI", Arial, sans-serif;
}

/* ==================================================
   📁 VIDEO ARCHIVE WRAPPER
================================================== */
.video-archive-wrapper {
    max-width: 1240px;
    margin: 70px auto;
    padding: 0 20px;
    font-family: var(--font);
    color: var(--dark-text);
}

/* Title */
.archive-title {
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    font-weight: 800;
    text-align: center;
    margin-bottom: 40px;
    letter-spacing: -0.4px;
}

/* ==================================================
   🔍 SEARCH BAR
================================================== */
.video-search-box {
    text-align: center;
    margin-bottom: 40px;
}

#video-search {
    width: 100%;
    max-width: 500px;
    padding: 14px 16px;
    font-size: 0.95rem;
    border-radius: var(--radius);
    border: 1px solid #cbd5e1;
    background: #ffffff;
    transition: var(--transition);
}

#video-search:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(37,99,235,0.2);
}

/* ==================================================
   🎬 VIDEO GRID
================================================== */
.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 26px;
}

/* ==================================================
   🎥 VIDEO CARD
================================================== */
.video-card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.video-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

/* Thumbnail */
.video-card img {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.video-card:hover img {
    transform: scale(1.06);
}

/* Meta wrapper */
.video-meta {
    padding: 14px 16px 6px;
}

/* Categories */
.video-categories {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 10px;
}

.video-category {
    font-size: 0.7rem;
    padding: 4px 10px;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--secondary), #22c55e);
    color: #ffffff;
    font-weight: 600;
    letter-spacing: 0.2px;
    transition: var(--transition);
}

.video-category:hover {
    background: linear-gradient(135deg, var(--primary), var(--accent));
}

/* Title */
.video-title {
    font-size: 0.95rem;
    line-height: 1.45;
    font-weight: 700;
    padding: 0 16px 16px;
    color: var(--dark-text);
    transition: color 0.25s ease;
}

.video-card:hover .video-title {
    color: var(--primary);
}

/* ==================================================
   🔢 PAGINATION
================================================== */
.pagination {
    margin: 50px 0 20px;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px;
}

.pagination button {
    padding: 8px 16px;
    border-radius: 999px;
    font-size: 0.8rem;
    border: 1px solid #cbd5e1;
    background: #ffffff;
    cursor: pointer;
    transition: var(--transition);
}

.pagination button:hover {
    background: var(--primary);
    color: #ffffff;
    border-color: var(--primary);
}

.pagination button.active {
    background: linear-gradient(135deg, var(--secondary), #22c55e);
    color: #ffffff;
    border-color: transparent;
}

/* ==================================================
   ⏳ LOADING SPINNER
================================================== */
.custom-spinner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 30px;
}

.spinner-circle {
    width: 32px;
    height: 32px;
    border: 3px solid #e5e7eb;
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.spinner-text {
    font-size: 0.85rem;
    color: var(--gray-text);
}

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

/* ==================================================
   🎞 SINGLE VIDEO PAGE
================================================== */
.video-page-wrapper {
    max-width: 1240px;
    margin: 70px auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 40px;
}

/* Main content */
.video-content h1 {
    font-size: 1.6rem;
    font-weight: 800;
    margin-bottom: 20px;
}

/* Embed */
.video-embed {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    margin-bottom: 25px;
}

.video-embed iframe {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

/* Description */
.video-description {
    background: var(--light-bg);
    padding: 22px;
    border-radius: var(--radius);
    line-height: 1.7;
    font-size: 0.9rem;
}

/* ==================================================
   📌 SIDEBAR
================================================== */
.video-sidebar h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.related-video-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.related-video-list li {
    margin-bottom: 14px;
}

.related-video-list a {
    display: flex;
    gap: 12px;
    align-items: center;
    text-decoration: none;
    color: var(--dark-text);
    transition: var(--transition);
}

.related-video-list a:hover {
    color: var(--primary);
}

.related-video-list img {
    width: 88px;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    border-radius: var(--radius-sm);
}

/* ==================================================
   🔘 BUTTON
================================================== */
.btn-video-link {
    display: inline-block;
    margin-top: 20px;
    padding: 12px 22px;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #ffffff;
    font-weight: 700;
    text-decoration: none;
    transition: var(--transition);
}

.btn-video-link:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

/* ==================================================
   📱 RESPONSIVE
================================================== */
@media (max-width: 992px) {
    .video-page-wrapper {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .video-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    }

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