/**
 * Layout - Grid system and containers
 */

/* Container */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--space-md);
}

/* Site structure */
.site {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.site-main {
    flex: 1;
}

/* Sidebar + content layout wrapper (listing pages only) */
.site-layout {
    min-height: calc(100vh - var(--header-height));
}

.site-layout__content {
    min-width: 0;
}

/* Section */
.section {
    padding-block: var(--space-xl);
}

.section--compact {
    padding-block: var(--space-lg);
}

/* Video Grid - CSS fallback before JS masonry loads */
.video-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--grid-gap);
}

/* Once masonry JS initializes, switch to absolute positioning */
.video-grid.masonry-active {
    display: block;
    position: relative;
}

.video-grid.masonry-active .video-card {
    position: absolute;
    left: 0;
    top: 0;
    opacity: 0;
}

/* Cards become visible after being positioned */
.video-grid.masonry-ready .video-card {
    opacity: 1;
    transition: opacity 0.3s ease;
}

/* Page loading overlay - shown until masonry positions content */
.page-loader {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: var(--color-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.page-loader--hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.page-loader__spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--color-surface-raised);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Responsive fallback grid */
@media (max-width: 1200px) {
    .video-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .video-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Sidebar grid */
.sidebar-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--grid-gap);
}

/* Two column layout */
.layout-two-col {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: var(--space-xl);
}

@media (max-width: 992px) {
    .layout-two-col {
        grid-template-columns: 1fr;
    }
}

/* Flex utilities */
.flex {
    display: flex;
}

.flex-wrap {
    flex-wrap: wrap;
}

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

.flex-between {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.flex-start {
    display: flex;
    align-items: center;
    justify-content: flex-start;
}

.gap-xs {
    gap: var(--space-xs);
}

.gap-sm {
    gap: var(--space-sm);
}

.gap-md {
    gap: var(--space-md);
}

.gap-lg {
    gap: var(--space-lg);
}

/* Spacing utilities */
.mt-0 { margin-top: 0; }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }

.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }

.pt-0 { padding-top: 0; }
.pt-sm { padding-top: var(--space-sm); }
.pt-md { padding-top: var(--space-md); }
.pt-lg { padding-top: var(--space-lg); }
.pt-xl { padding-top: var(--space-xl); }

.pb-0 { padding-bottom: 0; }
.pb-sm { padding-bottom: var(--space-sm); }
.pb-md { padding-bottom: var(--space-md); }
.pb-lg { padding-bottom: var(--space-lg); }
.pb-xl { padding-bottom: var(--space-xl); }

.px-md { padding-inline: var(--space-md); }
.py-md { padding-block: var(--space-md); }