/* --- Travel Page Styles (NERV theme) --- */

.region-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 15px;
    margin-top: 30px;
}

.region-card {
    display: flex;
    flex-direction: column;
    text-decoration: none;
    background: var(--card-bg);
    border: 1px solid var(--nerv-dark);
    position: relative;
    overflow: hidden;
    transition: transform 0.2s ease, border-color 0.2s ease, opacity 0.4s ease;
}

/* JS adds .js to <html>; only then do cards start hidden for reveal animation */
html.js .region-card {
    opacity: 0;
    transform: translateY(20px);
}

.region-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.region-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--primary-color);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
    z-index: 2;
}

.region-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.region-card:hover::before {
    transform: scaleX(1);
}

.region-image-container {
    position: relative;
    width: 100%;
    aspect-ratio: 4 / 3;
    overflow: hidden;
    background-color: var(--nerv-dark);
}

.region-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease, filter 0.4s ease;
    filter: grayscale(20%);
}

.region-card:hover .region-image {
    transform: scale(1.05);
    filter: grayscale(0%);
}

.region-empty {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    color: var(--nerv-amber);
    font-size: 0.9rem;
    letter-spacing: 2px;
    opacity: 0.5;
    animation: breathe 6s ease-in-out infinite;
}

.region-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(45, 45, 45, 0.8), transparent 50%);
    opacity: 0;
    transition: opacity 0.3s ease;
    display: flex;
    align-items: flex-end;
    padding: 10px;
}

.region-card:hover .region-overlay {
    opacity: 1;
}

.region-count {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: bold;
    color: var(--nerv-white);
    background: var(--primary-color);
    padding: 3px 6px;
    text-transform: uppercase;
    clip-path: polygon(0 0, 100% 0, 100% calc(100% - 5px), calc(100% - 5px) 100%, 0 100%);
}

.region-info {
    padding: 12px;
    background: var(--card-bg);
    border-top: 1px dashed #ccc;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.region-title {
    font-family: var(--font-main);
    font-weight: 800;
    font-size: 1rem;
    color: var(--text-color);
    text-transform: uppercase;
    margin-bottom: 4px;
}

.region-meta {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: #666;
    text-transform: uppercase;
}

.region-placeholder {
    pointer-events: none;
    opacity: 0.6;
}

/* --- Gallery subpage styles --- */

.photo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 15px;
    margin-top: 30px;
}

.photo-card {
    position: relative;
    overflow: hidden;
    border: 1px solid var(--nerv-dark);
    background: var(--nerv-dark);
    cursor: pointer;
    transition: opacity 0.4s ease, transform 0.4s ease;
}

/* JS adds .js to <html>; only then do cards start hidden for reveal animation */
html.js .photo-card {
    opacity: 0;
    transform: translateY(20px);
}

.photo-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.photo-card img {
    display: block;
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    transition: transform 0.4s ease, filter 0.4s ease;
    filter: grayscale(15%);
}

.photo-card:hover img {
    transform: scale(1.04);
    filter: grayscale(0%);
}

.photo-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background: linear-gradient(to top, rgba(45, 45, 45, 0.9), transparent);
    color: var(--nerv-white);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    text-transform: uppercase;
    padding: 20px 10px 8px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.photo-card:hover .photo-caption {
    opacity: 1;
}

/* Lightbox */
.lightbox {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(20, 20, 20, 0.95);
    z-index: 100;
    align-items: center;
    justify-content: center;
    flex-direction: column;
}

.lightbox.open {
    display: flex;
}

.lightbox img {
    max-width: 92vw;
    max-height: 82vh;
    border: 2px solid var(--primary-color);
    object-fit: contain;
}

.lightbox-caption {
    font-family: var(--font-mono);
    color: var(--nerv-white);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 12px;
    font-size: 0.9rem;
}

.lightbox-close {
    position: absolute;
    top: 15px;
    right: 25px;
    font-family: var(--font-mono);
    font-size: 1.5rem;
    color: var(--nerv-white);
    cursor: pointer;
    background: none;
    border: none;
}

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

.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    font-family: var(--font-mono);
    font-size: 2rem;
    color: var(--nerv-white);
    background: none;
    border: none;
    cursor: pointer;
    padding: 20px;
}

.lightbox-nav:hover {
    color: var(--primary-color);
}

.lightbox-nav.prev {
    left: 10px;
}

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

/* Responsive */
@media (max-width: 600px) {
    .region-grid {
        grid-template-columns: 1fr;
    }

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