/* =====================================================
   FOTOGALERIE – přehled alb, detail alba, lightbox
   ===================================================== */

/* ── Výběr roku ── */
.year-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: var(--space-lg);
}
.year-nav__link {
    padding: 0.4em 1em;
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--color-primary-dark);
    background: #fff;
    border: 2px solid var(--color-border);
    border-radius: 999px;
    transition: background var(--transition), color var(--transition), border-color var(--transition);
}
.year-nav__link:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}
.year-nav__link:focus-visible,
.album-card a:focus-visible,
.photo-item:focus-visible,
.album-back:focus-visible,
.lightbox__btn:focus-visible {
    outline: 3px solid var(--color-gold);
    outline-offset: 3px;
}

/* ── Skupina alb za rok ── */
.year-group {
    scroll-margin-top: 6rem;
    margin-bottom: var(--space-xl);
}
.year-group:last-child { margin-bottom: 0; }

.year-group__title {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 4vw, 2.4rem);
    font-weight: 700;
    color: var(--color-primary-dark);
    line-height: 1.1;
    margin-bottom: var(--space-md);
    display: flex;
    align-items: center;
    gap: 1rem;
}
.year-group__title::after {
    content: '';
    flex: 1;
    height: 2px;
    background: linear-gradient(to right, var(--color-gold), transparent);
}

/* ── Karta alba ── */
.album-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-md);
}

.album-card {
    display: flex;
    flex-direction: column;
    background: #fff;
    border: 1px solid var(--color-border);
    border-top: 4px solid var(--color-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: box-shadow var(--transition), transform var(--transition);
}
.album-card:hover {
    box-shadow: 0 10px 30px rgba(0,0,0,0.12);
    transform: translateY(-3px);
}

.album-card__media {
    position: relative;
    display: block;
    aspect-ratio: 4 / 3;
    background: var(--color-bg-alt);
    overflow: hidden;
}
.album-card__media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}
.album-card:hover .album-card__media img { transform: scale(1.05); }

.album-card__badge {
    position: absolute;
    left: 0.75rem;
    bottom: 0.75rem;
    padding: 0.25em 0.7em;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #fff;
    background: rgba(20, 45, 30, 0.85);
    border-radius: var(--radius);
}

.album-card__body {
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    padding: 1.25rem 1.5rem 1.5rem;
}
.album-card__title {
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 0.5rem;
}
.album-card__title a { color: var(--color-text); }
.album-card__title a:hover { color: var(--color-primary); }

.album-card__perex {
    font-size: 0.97rem;
    line-height: 1.6;
    color: var(--color-text-light);
    margin-bottom: 1rem;
    flex-grow: 1;
}
.album-card__link {
    margin-top: auto;
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-accent);
}
.album-card__link:hover { color: var(--color-primary); }

/* ── Detail alba ── */
.album-back {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.9rem;
    font-weight: 600;
    color: rgba(255,255,255,0.85);
    margin-bottom: var(--space-md);
}
.album-back:hover { color: var(--color-gold); }

.album-title { text-wrap: balance; }

.album-count {
    margin-top: 1rem;
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-gold);
}

.photo-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
}
.photo-item {
    display: block;
    aspect-ratio: 4 / 3;
    overflow: hidden;
    border-radius: var(--radius);
    background: var(--color-bg-alt);
    cursor: zoom-in;
}
.photo-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease, filter 0.3s ease;
}
.photo-item:hover img {
    transform: scale(1.06);
    filter: brightness(1.05);
}

.album-footer {
    margin-top: var(--space-lg);
    padding-top: var(--space-md);
    border-top: 1px solid var(--color-border);
    text-align: center;
}

/* ── Lightbox ── */
.lightbox {
    position: fixed;
    inset: 0;
    width: 100vw;
    height: 100vh;
    max-width: none;
    max-height: none;
    margin: 0;
    padding: 0;
    border: 0;
    background: rgba(10, 18, 13, 0.94);
    color: #fff;
}
.lightbox[open] {
    display: flex;
    align-items: center;
    justify-content: center;
}
.lightbox::backdrop { background: rgba(10, 18, 13, 0.94); }

.lightbox__figure {
    margin: 0;
    max-width: min(92vw, 1400px);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
}
.lightbox__img {
    max-width: 100%;
    max-height: 82vh;
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: var(--radius);
    box-shadow: 0 10px 50px rgba(0,0,0,0.5);
}
.lightbox__caption {
    font-size: 0.95rem;
    color: rgba(255,255,255,0.85);
    text-align: center;
}

.lightbox__btn {
    position: absolute;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 3rem;
    height: 3rem;
    color: #fff;
    background: rgba(255,255,255,0.12);
    border: 1px solid rgba(255,255,255,0.25);
    border-radius: 50%;
    cursor: pointer;
    transition: background var(--transition);
}
.lightbox__btn:hover { background: rgba(255,255,255,0.28); }
.lightbox__close { top: 1rem; right: 1rem; }
.lightbox__nav { top: 50%; transform: translateY(-50%); }
.lightbox__nav--prev { left: 0.75rem; }
.lightbox__nav--next { right: 0.75rem; }

/* ── Responsive ── */
@media (min-width: 640px) {
    .album-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 768px) {
    .photo-grid { grid-template-columns: repeat(3, 1fr); gap: 1rem; }
    .lightbox__nav--prev { left: 1.5rem; }
    .lightbox__nav--next { right: 1.5rem; }
}
@media (min-width: 1024px) {
    .album-grid { grid-template-columns: repeat(3, 1fr); }
    .photo-grid { grid-template-columns: repeat(4, 1fr); }
}
@media (max-width: 767px) {
    .lightbox__nav { top: auto; bottom: 1rem; transform: none; }
    .lightbox__nav--prev { left: calc(50% - 3.75rem); }
    .lightbox__nav--next { right: calc(50% - 3.75rem); }
    .lightbox__img { max-height: 74vh; }
}

@media (prefers-reduced-motion: reduce) {
    .album-card,
    .album-card__media img,
    .photo-item img { transition: none; }
}