/**
 * Gallery hub — landing page for event galleries (Raghavendra Mandapam, Valluvar Kottam).
 */

.gallery-hub {
    --gh-teal-deep: rgb(17, 90, 95);
    --gh-teal-mid: rgba(22, 105, 110, 0.55);
    --gh-teal-soft: rgba(30, 120, 125, 0.35);
    --gh-card-radius: clamp(14px, 2.2vw, 20px);
    --gh-card-shadow:
        0 4px 6px rgba(15, 23, 42, 0.04),
        0 12px 24px rgba(15, 23, 42, 0.08),
        0 24px 48px rgba(15, 23, 42, 0.06);
    --gh-card-shadow-hover:
        0 8px 16px rgba(15, 23, 42, 0.06),
        0 20px 40px rgba(15, 23, 42, 0.12),
        0 40px 72px rgba(22, 105, 110, 0.14);
}

.gallery-hub.section-padding {
    background: linear-gradient(180deg, #ffffff 0%, #fafbfc 52%, #f4f6f8 100%);
    padding-top: clamp(3rem, 6vw, 4.25rem);
    padding-bottom: clamp(3.5rem, 7vw, 5rem);
}

.gallery-hub-intro {
    max-width: 34rem;
    margin: 0 auto clamp(2.25rem, 5vw, 3.25rem);
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: clamp(1rem, 1.1vw + 0.85rem, 1.2rem);
    font-weight: 400;
    line-height: 1.55;
    color: #8b939e;
    text-align: center;
    letter-spacing: 0.01em;
}

.gallery-hub-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: clamp(1.25rem, 3.5vw, 2.25rem);
    max-width: 920px;
    margin: 0 auto;
    padding: 0 clamp(4px, 1.5vw, 8px);
}

@media (max-width: 639px) {
    .gallery-hub-grid {
        grid-template-columns: 1fr;
        max-width: 420px;
    }
}

.gallery-hub-card {
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
    border-radius: var(--gh-card-radius);
    text-decoration: none;
    color: inherit;
    background: #fff;
    box-shadow: var(--gh-card-shadow);
    border: 1px solid rgba(15, 23, 42, 0.05);
    transition:
        transform 0.38s cubic-bezier(0.22, 1, 0.36, 1),
        box-shadow 0.38s cubic-bezier(0.22, 1, 0.36, 1),
        border-color 0.38s ease;
}

.gallery-hub-card:hover,
.gallery-hub-card:focus-visible {
    transform: translateY(-8px);
    box-shadow: var(--gh-card-shadow-hover);
    border-color: rgba(22, 105, 110, 0.18);
    color: inherit;
    text-decoration: none;
    outline: none;
}

.gallery-hub-card:focus-visible {
    box-shadow: var(--gh-card-shadow-hover), 0 0 0 3px rgba(22, 105, 110, 0.35);
}

.gallery-hub-card__media {
    position: relative;
    flex: 1 1 auto;
    min-height: clamp(180px, 32vw, 240px);
    aspect-ratio: 4 / 3;
    overflow: hidden;
    background: #1a2e32;
}

.gallery-hub-card__media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.55s cubic-bezier(0.22, 1, 0.36, 1);
}

.gallery-hub-card:hover .gallery-hub-card__media img,
.gallery-hub-card:focus-visible .gallery-hub-card__media img {
    transform: scale(1.06);
}

.gallery-hub-card__overlay {
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: linear-gradient(
        165deg,
        rgba(12, 68, 72, 0.62) 0%,
        rgba(18, 95, 100, 0.48) 42%,
        rgba(25, 115, 118, 0.38) 100%
    );
    mix-blend-mode: multiply;
    opacity: 0.92;
    transition: opacity 0.4s ease;
}

.gallery-hub-card:hover .gallery-hub-card__overlay,
.gallery-hub-card:focus-visible .gallery-hub-card__overlay {
    opacity: 0.82;
}

.gallery-hub-card__shine {
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: linear-gradient(
        125deg,
        rgba(255, 255, 255, 0.14) 0%,
        transparent 42%,
        transparent 100%
    );
    opacity: 0.7;
}

.gallery-hub-card__body {
    flex: 0 0 auto;
    padding: clamp(1.15rem, 2.5vw, 1.45rem) clamp(1.25rem, 3vw, 1.65rem) clamp(1.35rem, 2.8vw, 1.55rem);
    text-align: center;
    background: #fff;
    border-top: 1px solid rgba(15, 23, 42, 0.06);
}

.gallery-hub-card__title {
    margin: 0;
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: clamp(1.12rem, 1.1vw + 0.95rem, 1.35rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    color: #111827;
    line-height: 1.25;
}

.gallery-hub-card__cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.35em;
    margin-top: 0.5rem;
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: 0.9rem;
    font-weight: 500;
    color: #9aa3af;
    letter-spacing: 0.02em;
    transition: color 0.25s ease, transform 0.25s ease;
}

.gallery-hub-card__cta .ti-angle-right {
    font-size: 0.72em;
    opacity: 0.75;
    transition: transform 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}

.gallery-hub-card:hover .gallery-hub-card__cta,
.gallery-hub-card:focus-visible .gallery-hub-card__cta {
    color: #16696d;
}

.gallery-hub-card:hover .gallery-hub-card__cta .ti-angle-right,
.gallery-hub-card:focus-visible .gallery-hub-card__cta .ti-angle-right {
    transform: translateX(4px);
}

@media (prefers-reduced-motion: reduce) {
    .gallery-hub-card,
    .gallery-hub-card__media img,
    .gallery-hub-card__overlay,
    .gallery-hub-card__cta,
    .gallery-hub-card__cta .ti-angle-right {
        transition: none;
    }

    .gallery-hub-card:hover,
    .gallery-hub-card:focus-visible {
        transform: none;
    }

    .gallery-hub-card:hover .gallery-hub-card__media img,
    .gallery-hub-card:focus-visible .gallery-hub-card__media img {
        transform: none;
    }
}