:root {
    --bg-primary: #000000;
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.6);
    --text-muted: rgba(255, 255, 255, 0.4);
    --text-dim: rgba(255, 255, 255, 0.3);
    --accent: #D32F2F;
    --border: rgba(255, 255, 255, 0.1);
    --font-mono: 'JetBrains Mono', monospace;
    --font-sans: 'Noto Sans SC', sans-serif;
}

html, body {
    height: 100%;
    overflow: hidden;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
}

.gallery-page {
    height: 100vh;
    display: flex;
    flex-direction: column;
}

.gallery-main {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.dna-container {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    pointer-events: none;
    z-index: 1;
}

.dna-left { left: 3vw; }
.dna-right { right: 3vw; }

.dna-strand {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.dna-text {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    color: var(--text-muted);
    letter-spacing: 3px;
    text-transform: uppercase;
    white-space: nowrap;
    transition: all 0.5s ease;
}

.dna-text.highlight {
    color: var(--text-primary);
    transform: translateX(10px);
}

.dna-right .dna-text.highlight {
    transform: translateX(-10px);
}

.image-wrapper {
    position: relative;
    z-index: 2;
    width: 55vw;
    max-width: 700px;
    height: 65vh;
    overflow: hidden;
}

.gallery-image {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    opacity: 0;
    transform: translateY(60px);
    transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.gallery-image.visible {
    opacity: 1;
    transform: translateY(0);
}

.gallery-image.slide-out-up {
    opacity: 0;
    transform: translateY(-60px);
    transition: opacity 0.25s ease-in, transform 0.25s ease-in;
}

.gallery-image.slide-out-down {
    opacity: 0;
    transform: translateY(60px);
    transition: opacity 0.25s ease-in, transform 0.25s ease-in;
}

.image-skeleton {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 0;
}

.skeleton-box {
    width: 60%;
    height: 70%;
    background: linear-gradient(110deg, rgba(255,255,255,0.03) 30%, rgba(255,255,255,0.06) 50%, rgba(255,255,255,0.03) 70%);
    background-size: 200% 100%;
    animation: shimmer 1.5s ease infinite;
}

@keyframes shimmer {
    from { background-position: 200% 0; }
    to { background-position: -200% 0; }
}

.image-skeleton.hidden {
    display: none;
}

.image-info {
    position: absolute;
    bottom: -60px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    width: 100%;
}

.info-title {
    font-size: 1.25rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.info-desc {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--text-muted);
    letter-spacing: 1px;
}

.image-index {
    position: absolute;
    top: -40px;
    left: 50%;
    transform: translateX(-50%);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
    letter-spacing: 4px;
}

.gallery-nav {
    position: absolute;
    bottom: 15%;
    display: flex;
    gap: 2rem;
}

.gallery-nav.prev { left: 25vw; }
.gallery-nav.next { right: 25vw; }

.nav-btn {
    width: 48px;
    height: 48px;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.nav-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.nav-btn:active {
    transform: scale(0.95);
}

.thumbnail-bar {
    height: 100px;
    padding: 1rem 4rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    overflow-x: auto;
    border-top: 1px solid var(--border);
    background: rgba(0, 0, 0, 0.5);
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.thumbnail-bar::-webkit-scrollbar {
    display: none;
}

.thumbnail {
    width: 70px;
    height: 50px;
    flex-shrink: 0;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all 0.3s ease;
    overflow: hidden;
    opacity: 0.4;
    background: var(--border);
}

.thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.thumbnail:hover {
    opacity: 0.7;
    border-color: var(--text-muted);
}

.thumbnail.active {
    opacity: 1;
    border-color: var(--accent);
}

@media (max-width: 1024px) {
    .dna-container { display: none; }
    .image-wrapper { width: 85vw; height: 55vh; }
    .gallery-nav.prev { left: 10vw; }
    .gallery-nav.next { right: 10vw; }
}

@media (max-width: 768px) {
    .thumbnail-bar { height: 70px; padding: 0.5rem 1rem; }
    .thumbnail { width: 50px; height: 35px; }
    .gallery-nav { display: none; }
}