/* ===================================================================
   THE VAULT — Media Gallery & Archive
   Masonry Grid, Lightbox, YouTube Archive
   =================================================================== */

/* --- Page Hero --- */
.vault-hero {
    min-height: 50vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: calc(var(--nav-height) + var(--space-xl)) var(--space-md) var(--space-xl);
    position: relative;
    background: radial-gradient(circle at top center, rgba(25, 25, 30, 0.6) 0%, transparent 70%);
}

.vault-hero-content {
    max-width: 800px;
}

.vault-hero .page-tag {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: var(--fs-caption);
    color: var(--accent-cyan);
    text-transform: uppercase;
    letter-spacing: 0.4em;
    margin-bottom: var(--space-sm);
    padding: 6px 20px;
    border: 1px solid rgba(0, 229, 255, 0.3);
    border-radius: 30px;
}

.vault-hero h1 {
    font-size: var(--fs-h1);
    margin-bottom: var(--space-sm);
}

.vault-hero h1 .gold {
    color: var(--accent-gold);
    text-shadow: var(--glow-text);
}

.vault-hero .subtitle {
    font-size: var(--fs-body);
    color: var(--text-secondary);
    max-width: 650px;
    margin: 0 auto;
    line-height: 1.8;
}

/* --- Gallery Section --- */
.gallery-section {
    padding: var(--space-xl) 0;
}

/* Filter Tabs */
.filter-tabs {
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
    flex-wrap: wrap;
}

.filter-tab {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    padding: 8px 24px;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-tab:hover {
    border-color: var(--accent-gold);
    color: var(--text-primary);
    background: rgba(212, 168, 83, 0.1);
}

.filter-tab.active {
    background: var(--accent-gold);
    color: var(--bg-primary);
    border-color: var(--accent-gold);
    box-shadow: var(--glow-gold);
}

/* --- Masonry Grid --- */
.masonry-grid {
    column-count: 3;
    column-gap: var(--space-md);
    padding: 0 var(--space-md);
    max-width: 1400px;
    margin: 0 auto;
}

.masonry-item {
    break-inside: avoid;
    margin-bottom: var(--space-md);
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.08);
    background: #000;
    transition: transform 0.4s var(--ease-smooth), box-shadow 0.4s var(--ease-smooth);
    cursor: zoom-in;
}

.masonry-item img {
    width: 100%;
    display: block;
    transition: transform 0.5s ease, filter 0.5s ease;
    filter: grayscale(20%) contrast(1.1);
}

.item-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.9) 0%, transparent 60%);
    opacity: 0;
    transition: opacity 0.3s ease;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: var(--space-md);
}

.item-info h4 {
    font-family: var(--font-display);
    color: var(--accent-gold);
    font-size: 1.1rem;
    transform: translateY(20px);
    transition: transform 0.4s ease;
}

.item-info span {
    font-family: var(--font-mono);
    color: var(--accent-cyan);
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    transform: translateY(20px);
    display: block;
    transition: transform 0.4s ease 0.1s;
}

.masonry-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    border-color: rgba(212, 168, 83, 0.4);
}

.masonry-item:hover img {
    transform: scale(1.05);
    filter: grayscale(0%) contrast(1.15);
}

.masonry-item:hover .item-overlay {
    opacity: 1;
}

.masonry-item:hover .item-info h4,
.masonry-item:hover .item-info span {
    transform: translateY(0);
}

/* Hidden filter */
.masonry-item.hidden {
    display: none;
}

/* --- Lightbox --- */
.lightbox {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.95);
    z-index: var(--z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    backdrop-filter: blur(10px);
}

.lightbox.active {
    opacity: 1;
    pointer-events: all;
}

.lightbox-content {
    position: relative;
    max-width: 90vw;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.lightbox-img {
    max-width: 100%;
    max-height: 85vh;
    border: 1px solid rgba(212, 168, 83, 0.3);
    box-shadow: 0 0 50px rgba(0, 0, 0, 0.8);
    display: block;
    border-radius: var(--radius-sm);
}

.lightbox-caption {
    text-align: center;
    color: var(--text-primary);
    font-family: var(--font-display);
    margin-top: var(--space-sm);
    font-size: 1.2rem;
}

.lightbox-close {
    position: absolute;
    top: -50px;
    right: 0;
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 2rem;
    cursor: pointer;
    transition: color 0.3s;
    z-index: 10;
}

.lightbox-close:hover {
    color: var(--accent-gold);
}

.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--text-primary);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1rem;
}

.lightbox-nav:hover {
    background: var(--accent-gold);
    border-color: var(--accent-gold);
    color: var(--bg-primary);
}

.lightbox-prev {
    left: -70px;
}

.lightbox-next {
    right: -70px;
}

/* --- YouTube Archive Section --- */
.archive-section {
    padding: var(--space-xl) 0;
    background: var(--bg-secondary);
}

.archive-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-lg);
    max-width: 1400px;
    margin: 0 auto;
}

.archive-card {
    background: var(--bg-tertiary);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all 0.3s ease;
}

.archive-card:hover {
    border-color: rgba(212, 168, 83, 0.3);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
    transform: translateY(-3px);
}

.video-embed {
    position: relative;
    padding-bottom: 56.25%;
    /* 16:9 */
    height: 0;
    background: #000;
}

.video-embed iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

.video-info {
    padding: var(--space-md);
}

.video-info h3 {
    font-family: var(--font-display);
    color: var(--accent-gold);
    font-size: 1.1rem;
    margin-bottom: var(--space-xs);
}

.video-info p {
    font-size: var(--fs-small);
    color: var(--text-muted);
    margin-bottom: var(--space-sm);
}

.video-meta {
    display: flex;
    gap: var(--space-sm);
}

.video-meta span {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--accent-cyan);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    padding: 2px 10px;
    border: 1px solid rgba(0, 229, 255, 0.2);
    border-radius: 12px;
}

/* --- Responsive --- */
@media (max-width: 900px) {
    .masonry-grid {
        column-count: 2;
    }

    .lightbox-prev {
        left: 10px;
    }

    .lightbox-next {
        right: 10px;
    }
}

@media (max-width: 600px) {
    .masonry-grid {
        column-count: 1;
    }

    .lightbox-nav {
        display: none;
    }

    .archive-grid {
        grid-template-columns: 1fr;
    }
}