#configCollapse {
    width: 50vh;
}

.logoheader {
    -webkit-filter: grayscale(100%);
    -moz-filter: grayscale(100%);
    -o-filter: grayscale(100%);
    -ms-filter: grayscale(100%);
    filter: grayscale(100%); 
}

/* Dark theme styles */
.btn-secondary {
    background-color: var(--primary-color) !important;
    border-color: var(--primary-color) !important;
    color: var(--surface-color-on) !important;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.btn-secondary:hover {
    background-color: color-mix(in srgb, var(--primary-color) 85%, black) !important;
    border-color: color-mix(in srgb, var(--primary-color) 85%, black) !important;
    color: var(--surface-color-on) !important;
}

/* Modernized typography */
body {
    font-family: 'Roboto', system-ui, -apple-system, 'Segoe UI', 'Helvetica Neue', Arial, 'Noto Sans', 'Liberation Sans', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
}

/* Updated color scheme */
:root {
    --primary-color: #000; /* Updated to black for monochromatic design */
    --accent-color: #3239ff; /* subtle accent used sparingly */
    --muted-color: #6c757d;
    --background-color: #f8f9fa;
    --surface-color: #ffffff;
    --surface-color-on: #fff; /* foreground color used on surfaces */
    --text-color: #212529;
    --elevation-1: 0 2px 8px rgba(0,0,0,0.08);
    --elevation-2: 0 10px 30px rgba(0,0,0,0.12);
    /* Typography scale */
    --font-size-base: 15px;
    --font-size-lg: 1.0625rem; /* ~17px */
    --h1: 1.75rem;
    --h2: 1.375rem;
    --line-height-base: 1.45;
    --space-1: 6px;
    --space-2: 12px;
    --space-3: 18px;
}

body {
    background-color: var(--background-color);
    color: var(--text-color);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
}

/* Improved spacing */
.container {
    padding: 20px;
    background-color: var(--surface-color);
    box-shadow: var(--elevation-1);
    border-radius: 6px;
}

/* Headings tuned for media-heavy site (not drastic) */
h1 { font-size: var(--h1); line-height: 1.15; margin-bottom: var(--space-2); }
h2 { font-size: var(--h2); line-height: 1.18; margin-bottom: var(--space-2); }
h3 { font-size: 1.125rem; line-height: 1.2; margin-bottom: var(--space-1); }

/* Metadata badges (duration, tags, categories) */
.meta-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 8px;
    font-size: 0.78rem;
    line-height: 1;
    border-radius: 999px;
    background: rgba(0,0,0,0.65);
    color: var(--surface-color-on);
    box-shadow: 0 1px 4px rgba(0,0,0,0.25);
}
.meta-badge .bi { font-size: 0.9em; opacity: 0.95; }

/* Duration badge specifics */
.video-badge-duration {
    position: absolute;
    right: 8px;
    bottom: 8px;
    padding: 6px 9px;
    font-weight: 600;
    font-size: 0.78rem;
    border-radius: 999px;
    background: linear-gradient(180deg, rgba(0,0,0,0.7), rgba(0,0,0,0.6));
    color: var(--surface-color-on);
    pointer-events: none;
}

.nav-link {
    padding: 10px 15px;
    border-radius: 5px;
    transition: background-color 0.3s, color 0.3s;
    color: var(--text-color) !important;
    font-weight: 500;
}

/* Updated hover effects for monochromatic design */
.nav-link:hover {
    background-color: var(--primary-color);
    color: var(--surface-color-on, #fff) !important;
}

/* Floating Action Button */
.fab-upload {
    position: fixed;
    right: 18px;
    bottom: 18px;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--primary-color);
    color: var(--surface-color-on);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--elevation-2);
    z-index: 1200;
    text-decoration: none;
    transition: transform 0.18s ease, box-shadow 0.18s ease;
}
.fab-upload:hover { transform: translateY(-4px); box-shadow: 0 14px 36px rgba(0,0,0,0.18); }
.fab-upload .bi { font-size: 22px; }

/* Footer styling */
footer {
    background-color: color-mix(in srgb, var(--primary-color) 20%, var(--surface-color) 80%);
    color: var(--surface-color-on, #fff);
    padding: 20px 0;
}

footer a {
    color: var(--accent-color);
    text-decoration: none;
}

/* Updated hover effects for monochromatic design */
footer a:hover {
    color: color-mix(in srgb, var(--accent-color) 70%, black);
    text-decoration: underline;
}

/* Add subtle borders for better visual separation */
header {
    border-bottom: 1px solid color-mix(in srgb, var(--text-color) 10%, var(--surface-color) 90%);
}

.dropdown-divider {
    border-top: 1px solid color-mix(in srgb, var(--text-color) 20%, black);
}

.dropdown-menu {
    background-color: color-mix(in srgb, var(--muted-color) 70%, black);
    border: 1px solid color-mix(in srgb, var(--text-color) 30%, black);
}

.dropdown-item {
    color: var(--surface-color-on, #fff);
}

.dropdown-item:hover {
    background-color: color-mix(in srgb, var(--muted-color) 60%, black);
    color: var(--surface-color-on, #fff);
}

/* Pagination: make active page black to match site theme */
.pagination .page-item.active .page-link,
.pagination .page-item.active > a.page-link {
    background-color: var(--primary-color) !important;
    border-color: var(--primary-color) !important;
    color: var(--surface-color-on, #fff) !important;
}
.pagination .page-link {
    color: var(--text-color);
}
.pagination .page-link:hover {
    color: var(--primary-color);
}

/* Video thumbnail improvements */
.video-card {
    position: relative;
    overflow: hidden;
    border-radius: 6px;
    transition: transform 0.22s ease, box-shadow 0.22s ease;
}
.video-card:hover {
    transform: translateY(-6px) scale(1.02);
    box-shadow: 0 8px 26px rgba(0,0,0,0.18);
}
.video-thumb {
    display: block;
    width: 100%;
    height: 160px;
    object-fit: cover;
    background-color: var(--primary-color);
}
.video-overlay-play {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none; /* keep existing video hover JS working */
}
.video-overlay-play .play-icon {
    width: 64px;
    height: 64px;
    background: rgba(0,0,0,0.55);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--surface-color-on, #fff);
    font-size: 28px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.4);
}
.video-badge-duration {
    position: absolute;
    right: 6px;
    bottom: 6px;
    background: rgba(0,0,0,0.7);
    color: var(--surface-color-on, #fff);
    padding: 4px 8px;
    font-size: 12px;
    border-radius: 12px;
    pointer-events: none;
}
.video-title {
    display: -webkit-box;
    line-clamp: 2;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
    font-weight: 500;
    margin-bottom: 4px;
}

/* Small screens: make thumbnails taller for better touch targets */
@media (max-width: 576px) {
    .video-thumb { height: 200px; }
}

/* Individual video page responsive tweaks */
.video-page-wrapper {
    max-width: 100% !important;
    padding: 0 12px;
}
.video-player-container {
    width: 100%;
}
.video-actions-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
}
.video-actions-row .btn {
    flex: 1 1 auto;
    min-width: 110px;
}
.video-meta-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 16px;
    align-items: center;
}
.video-meta-grid p {
    margin: 0;
    padding: 0;
    font-size: 0.95rem;
}

@media (max-width: 768px) {
    .row.w-75.mx-auto { width: 100% !important; max-width: 100% !important; }
    .video-actions-row .btn { min-width: 90px; font-size: 0.95rem; }
    .video-meta-grid { flex-direction: column; align-items: flex-start; }
}

/* Categories grid styles */
.category-card {
    position: relative;
    overflow: hidden;
    border-radius: 8px;
    transition: transform 0.24s ease, box-shadow 0.24s ease;
}
.category-card:hover {
    transform: translateY(-6px) scale(1.02);
    box-shadow: 0 12px 30px rgba(0,0,0,0.18);
}
.category-ratio {
    width: 100%;
    aspect-ratio: 4 / 3;
    overflow: hidden;
}
.category-ratio img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.category-overlay {
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    /* ensure overlay fully covers the bottom gradient area (no gaps on transform) */
    height: 40%;
    min-height: 54px;
    display: flex;
    align-items: flex-end;
    justify-content: flex-start;
    padding: 12px;
    background: linear-gradient(0deg, rgba(0,0,0,0.75) 0%, rgba(0,0,0,0.45) 40%, rgba(0,0,0,0) 100%);
    color: var(--surface-color-on, #fff);
    transition: opacity 0.24s ease;
    z-index: 2;
    pointer-events: none;
}
.category-overlay h5 { margin: 0; font-weight: 700; font-size: 1.25rem; letter-spacing: 0.6px; transition: transform 0.28s ease, letter-spacing 0.28s ease; }

.category-card:hover img { transform: scale(1.06); }
.category-card:hover .category-overlay h5 { transform: translateY(-2px) scale(1.03); letter-spacing: 1.4px; color: var(--surface-color-on, #fff); }

@media (max-width: 576px) {
    .category-ratio { aspect-ratio: 3 / 2; }
}

/* User cards for latestuser page */
.user-card {
    background: var(--surface-color);
    border-radius: 8px;
    box-shadow: 0 4px 14px rgba(0,0,0,0.06);
    transition: transform 0.18s ease, box-shadow 0.18s ease;
}
.user-card:hover { transform: translateY(-6px); box-shadow: 0 10px 30px rgba(0,0,0,0.12); }
.user-avatar { width: 52px; height: 52px; object-fit: cover; }
.user-name { font-weight: 600; color: var(--text-color); }
.user-meta { font-size: 0.85rem; }

/* Upload form card and chip styles */
.upload-card { max-width: 980px; margin: 0 auto; }
.upload-card .file-preview { background: color-mix(in srgb, var(--surface-color) 98%, black 2%); }
.file-icon { width:46px; height:46px; }
.file-icon.bg-dark { background: var(--primary-color); color: var(--surface-color-on); }
.chip { display: inline-flex; align-items: center; gap:8px; padding: 6px 10px; border-radius: 999px; background: color-mix(in srgb, var(--muted-color) 10%, var(--surface-color) 90%); cursor: pointer; font-size: 0.9rem; }
.chip input { margin:0; width:16px; height:16px; }
.chip span { pointer-events: none; }
.text-truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }