/* =============================================================================
   GALLERY.CSS — DahaCare Gallery Page Styles
   Dùng riêng cho templates/gallery.html
   Kế thừa design tokens từ base.css (không redefine :root)
   ============================================================================= */


/* ─── HERO ────────────────────────────────────────────────────────────────────
   Đồng bộ với .svc-hero bên services.css
   ─────────────────────────────────────────────────────────────────────────── */
.gal-hero {
    max-width: 1280px;
    margin: 0 auto;
    padding: 64px 80px 0;
    text-align: center;
    margin-bottom: 64px;
}

.gal-hero__title {
    font-family: var(--font-base);
    font-style: italic;
    font-size: 44px;
    font-weight: 600;
    color: var(--color-deep-plum);
    margin: 0 0 16px;
    letter-spacing: -0.01em;
}

.gal-hero__subtitle {
    font-size: 17px;
    line-height: 1.6;
    color: var(--color-text-secondary);
    max-width: 560px;
    margin: 0 auto;
}


/* ─── GALLERY GRID ────────────────────────────────────────────────────────────*/
.gal-grid-section {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 80px;
    margin-bottom: 120px;
}

.gal-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.gal-item {
    position: relative;
    aspect-ratio: 1 / 1;
    border-radius: var(--radius-xl);
    overflow: hidden;
    cursor: pointer;
    background: var(--color-surface-variant);
    border: 0.5px solid var(--color-border-subtle);
}

.gal-item::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(62, 31, 71, 0.4), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.gal-item:hover::after {
    opacity: 1;
}

.gal-item__img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.5s ease;
}

.gal-item:hover .gal-item__img {
    transform: scale(1.05);
}

.gal-item__hover-icon {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(248, 249, 250, 0.85);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    opacity: 0;
    transform: translateY(-8px);
    transition: all 0.25s ease;
    z-index: 2;
}

.gal-item:hover .gal-item__hover-icon {
    opacity: 1;
    transform: translateY(0);
}


/* ─── BOTTOM CTA ──────────────────────────────────────────────────────────────*/
.gal-cta {
    text-align: center;
    margin-bottom: 120px;
}

.gal-cta__title {
    font-size: 22px;
    font-weight: 600;
    color: var(--color-deep-plum);
    margin: 0 0 24px;
}

.gal-cta__btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 32px;
    border-radius: var(--radius-md);
    background: var(--color-primary);
    color: #ffffff;
    font-family: var(--font-base);
    font-weight: 700;
    font-size: 14px;
    text-decoration: none;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

.gal-cta__btn:hover {
    opacity: 0.9;
    box-shadow: var(--shadow-md);
}


/* ─── LIGHTBOX OVERLAY ────────────────────────────────────────────────────────
   Fixed fullscreen, ẩn mặc định, toggle bằng class .gal-lightbox--open (JS)
   ─────────────────────────────────────────────────────────────────────────── */
body.gal-lightbox-active {
    overflow: hidden;
}

.gal-lightbox {
    position: fixed;
    inset: 0;
    z-index: 200;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.gal-lightbox--open {
    opacity: 1;
    visibility: visible;
}

.gal-lightbox__close-wrap {
    position: absolute;
    top: 24px;
    right: 24px;
    z-index: 210;
}

.gal-lightbox__counter-wrap {
    position: absolute;
    top: 24px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 210;
    background: rgba(62, 31, 71, 0.5);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    padding: 6px 18px;
    border-radius: var(--radius-full);
}

.gal-lightbox__counter {
    color: var(--color-stone-white);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.08em;
}

.gal-lightbox__icon-btn {
    color: var(--color-stone-white);
    background: rgba(62, 31, 71, 0.5);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: none;
    border-radius: 50%;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: color 0.2s ease, background 0.2s ease;
}

.gal-lightbox__icon-btn:hover {
    color: var(--color-primary-light);
}

.gal-lightbox__nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 210;
}

.gal-lightbox__nav--prev {
    left: 16px;
}

.gal-lightbox__nav--next {
    right: 16px;
}

.gal-lightbox__img-wrap {
    position: relative;
    width: 100%;
    max-width: 960px;
    max-height: 80vh;
    padding: 0 16px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.gal-lightbox__img {
    max-width: 100%;
    max-height: 80vh;
    object-fit: contain;
    border-radius: var(--radius-md);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}


/* ─── RESPONSIVE ──────────────────────────────────────────────────────────────*/
@media (max-width: 1024px) {
    .gal-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .gal-hero {
        padding: 40px 24px 0;
        margin-bottom: 40px;
    }

    .gal-hero__title {
        font-size: 32px;
    }

    .gal-grid-section {
        padding: 0 24px;
        margin-bottom: 64px;
    }

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

    .gal-cta {
        margin-bottom: 64px;
    }

    .gal-lightbox__nav {
        width: 40px;
        height: 40px;
    }

    .gal-lightbox__nav--prev {
        left: 8px;
    }

    .gal-lightbox__nav--next {
        right: 8px;
    }
}