/* ==========================================================================
   HEART MATES CLINIC - PREMIUM VISUAL CHANNELS DESIGN SYSTEM
   Applies consistent typography, responsive matrices, and theme parameters
   ========================================================================== */
:root {
    --color-soft-cream: #FDFBF3;
    --color-deep-black: #0E0E0E;
    --color-gold: #C29B47;
    --color-white: #FFFFFF;
    --font-stack: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --premium-shadow: 0 10px 30px rgba(0, 0, 0, 0.06), 0 1px 3px rgba(0, 0, 0, 0.02);
    --hms-border: #EFECE6;
    --hms-slate: #6B7280;
    --hms-body-charcoal: #2D2D3A;
    --hms-transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ── Global Layout Resets ── */
.text-center { text-align: center; }
.text-uppercase { text-transform: uppercase; }
.w-100 { width: 100%; }

/* ── Hero Presentation Banner Block ── */
.master-gallery-hero-banner {
    background-color: var(--color-white);
    padding: 70px 0 60px 0;
    width: 100%;
    border-bottom: 1px solid var(--hms-border);
    font-family: var(--font-stack);
}

.gallery-site-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    box-sizing: border-box;
}

.gallery-pretitle {
    color: var(--hms-slate);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 2px;
    display: block;
    margin-bottom: 8px;
}

.gallery-main-headline {
    color: var(--color-deep-black);
    font-size: 2.2rem;
    font-weight: 800;
    margin: 0 0 12px 0;
    letter-spacing: -0.5px;
}

.gallery-accent-gold-strip {
    width: 60px;
    height: 3px;
    background-color: var(--color-gold);
    margin: 0 auto 22px auto;
    border-radius: 2px;
}

.gallery-section-summary {
    color: var(--hms-slate);
    font-size: 1.02rem;
    max-width: 680px;
    margin: 0 auto;
    line-height: 1.6;
}

/* ── Photo Wall Media Grid ── */
.master-photo-stream-wall {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
    margin-top: 40px;
}

.stream-photo-frame {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    height: 145px;
    box-shadow: var(--premium-shadow);
    background: var(--color-deep-black);
    border: 1px solid var(--hms-border);
    cursor: pointer;
}

.stream-element-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: var(--hms-transition);
}

.stream-photo-frame:hover .stream-element-img {
    transform: scale(1.06);
}

.stream-frame-inner-overlay {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(14, 14, 14, 0.65);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.stream-photo-frame:hover .stream-frame-inner-overlay {
    opacity: 1;
}

.stream-frame-badge {
    background: var(--color-white);
    color: var(--color-deep-black);
    padding: 6px 14px;
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: 4px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

/* ── Dynamic Layout Control Ribbon ── */
.gallery-folders-workspace {
    background-color: var(--color-soft-cream);
    padding: 65px 0 100px 0;
    width: 100%;
    font-family: var(--font-stack);
}

.gallery-filter-panel-wrapper {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 45px;
    border-bottom: 1px solid var(--hms-border);
    padding-bottom: 25px;
    flex-wrap: wrap;
}

.filter-navigation-btn {
    background: var(--color-white);
    color: var(--color-deep-black);
    border: 1px solid var(--hms-border);
    padding: 10px 22px;
    font-size: 0.88rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-radius: 4px;
    cursor: pointer;
    transition: var(--hms-transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.filter-navigation-btn:hover {
    background: var(--color-deep-black);
    color: var(--color-white);
    border-color: var(--color-deep-black);
}

.filter-navigation-btn.active {
    background: var(--color-gold);
    color: var(--color-white);
    border-color: var(--color-gold);
}

/* ── Album Grid Cards Matrix ── */
.activity-folders-grid-matrix {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    width: 100%;
}

.activity-folder-item-card {
    background: var(--color-white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.02);
    border: 1px solid var(--hms-border);
    transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.25s ease;
    display: flex;
    flex-direction: column;
    position: relative;
}

.activity-folder-item-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.05);
}

.activity-folder-item-card::after {
    content: "";
    position: absolute;
    bottom: 0; left: 0; width: 100%; height: 4px;
    background-color: var(--color-gold);
    transform: scaleX(0);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    border-radius: 0 0 8px 8px;
}

.activity-folder-item-card:hover::after { transform: scaleX(1); }

.folder-picture-frame-mask {
    position: relative;
    height: 220px;
    overflow: hidden;
    background-color: var(--color-white);
}

.folder-cover-asset {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--hms-transition);
}

.activity-folder-item-card:hover .folder-cover-asset {
    transform: scale(1.04);
}

.folder-photo-counter-tag {
    position: absolute;
    top: 15px;
    right: 15px;
    background: rgba(14, 14, 14, 0.85);
    color: var(--color-white);
    padding: 5px 12px;
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: 4px;
    display: flex;
    align-items: center;
    gap: 6px;
    z-index: 2;
}

.folder-text-details-wrapper {
    padding: 25px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.folder-category-breadcrumb-label {
    color: var(--color-gold);
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-bottom: 8px;
    display: block;
}

.folder-core-title {
    font-size: 1.35rem;
    font-weight: bold;
    color: var(--color-deep-black);
    margin: 0 0 10px 0;
    line-height: 1.4;
    font-family: "Times New Roman", Times, serif;
}

.folder-summary-paragraph {
    color: var(--hms-slate);
    font-size: 0.88rem;
    line-height: 1.6;
    margin: 0 0 20px 0;
    flex-grow: 1;
    text-align: justify;
}

.folder-action-anchor-link {
    color: var(--color-deep-black);
    text-decoration: none !important;
    font-weight: 700;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: color 0.2s ease;
    margin-top: auto;
}

.folder-action-anchor-link:hover {
    color: var(--color-gold);
}

.gallery-empty-db-fallback {
    grid-column: 1 / -1;
    text-align: center;
    color: var(--hms-slate);
    padding: 50px 20px;
    font-style: italic;
    background: var(--color-white);
    border: 1px dashed var(--hms-border);
    border-radius: 8px;
}

/* ── Single Album / Video Grid Matrix Adaptations ── */
.inner-photo-grid-matrix {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.inner-photo-card {
    position: relative;
    height: 200px;
    overflow: hidden;
    border-radius: 8px;
    background: var(--color-deep-black);
    box-shadow: var(--premium-shadow);
    border: 1px solid var(--hms-border);
    cursor: pointer;
}

.inner-photo-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: var(--hms-transition);
}

.inner-photo-card:hover img {
    transform: scale(1.05);
}

/* ── Interactive Video Directory Extensions ── */
.video-grid-matrix-layout {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.video-card-element {
    background: var(--color-white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.03);
    border: 1px solid var(--hms-border);
    display: flex;
    flex-direction: column;
}

.video-player-embed-box {
    position: relative;
    width: 100%;
    height: 190px;
    background: #000;
}

.video-player-embed-box iframe {
    width: 100%;
    height: 100%;
    display: block;
}

.video-card-body-details {
    padding: 24px 20px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.video-badge-tag {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.6px;
    margin-bottom: 8px;
}

.video-badge-tag.public-tag { color: #1A73E8; }
.video-badge-tag.professional-tag { color: #C5221F; }

/* ── Fullscreen Overlay System Lightbox ── */
.lightbox-overlay {
    display: none;
    position: fixed;
    z-index: 99999;
    top: 0; left: 0; width: 100%; height: 100%;
    background-color: rgba(14, 14, 14, 0.96);
    backdrop-filter: blur(8px);
    align-items: center;
    justify-content: center;
}

.lightbox-content-wrapper {
    max-width: 85%;
    max-height: 80%;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.lightbox-main-img {
    max-width: 100%;
    max-height: 75vh;
    border-radius: 6px;
    border: 3px solid var(--color-white);
    box-shadow: 0 25px 50px rgba(0,0,0,0.5);
    object-fit: contain;
}

.lightbox-caption-text {
    color: var(--color-white);
    margin-top: 15px;
    font-size: 1.05rem;
    font-weight: 500;
    letter-spacing: 0.5px;
}

.lightbox-close {
    position: absolute;
    top: 30px;
    right: 40px;
    color: var(--hms-slate);
    font-size: 3.5rem;
    font-weight: 300;
    cursor: pointer;
    line-height: 1;
    transition: color 0.2s;
}

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

.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255,255,255,0.05);
    color: var(--color-white);
    border: 1px solid rgba(255,255,255,0.1);
    width: 60px;
    height: 60px;
    font-size: 1.3rem;
    cursor: pointer;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    user-select: none;
}

.lightbox-nav:hover { background: var(--color-gold); border-color: var(--color-gold); color: #111; }
.prev-btn { left: 40px; }
.next-btn { right: 40px; }

/* ==========================================================================
   CROSS-DEVICE LAYOUT RESPONSIVENESS MATRIX RULES
   ========================================================================== */
@media (max-width: 1100px) {
    .master-photo-stream-wall { grid-template-columns: repeat(4, 1fr); }
    .activity-folders-grid-matrix,
    .video-grid-matrix-layout { grid-template-columns: repeat(2, 1fr); }
    .inner-photo-grid-matrix { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
    .master-photo-stream-wall { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .inner-photo-grid-matrix { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .stream-photo-frame { height: 115px; }
    .gallery-main-headline { font-size: 1.75rem; }
    .gallery-filter-panel-wrapper { flex-direction: column; gap: 10px; padding-bottom: 15px; }
    .filter-navigation-btn { width: 100%; justify-content: center; }
    .activity-folders-grid-matrix,
    .video-grid-matrix-layout { grid-template-columns: 1fr; gap: 25px; max-width: 480px; margin: 0 auto; }
    .prev-btn { left: 15px; }
    .next-btn { right: 15px; }
    .lightbox-nav { width: 48px; height: 48px; font-size: 1rem; }
}

@media (max-width: 480px) {
    .gallery-site-container { padding: 0 16px; }
    .folder-text-details-wrapper,
    .video-card-body-details { padding: 20px 15px; }
    .inner-photo-grid-matrix { grid-template-columns: 1fr; }
}