/* ============================
   UNNYBUS Portfolio — Detail Page Styles
   ============================ */

/* Inherits base variables from styles.css */

/* --- Detail Page Layout --- */
.detail-page {
    background: var(--bg-primary);
    min-height: 100vh;
}

/* --- Back Navigation --- */
.detail-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--nav-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 48px;
    background: rgba(10, 10, 26, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-glass);
}

.detail-back {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition);
    padding: 8px 16px;
    border-radius: 50px;
    border: 1px solid var(--border-glass);
}

.detail-back:hover {
    color: var(--text-primary);
    border-color: var(--accent);
    background: rgba(59, 130, 246, 0.1);
}

.detail-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-en);
    font-weight: 700;
    font-size: 18px;
    letter-spacing: 2px;
}

.detail-logo-icon {
    width: 36px;
    height: 36px;
    background: var(--accent-gradient);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    font-weight: 800;
    color: white;
}

/* --- Hero Banner --- */
.detail-hero {
    position: relative;
    height: 70vh;
    min-height: 500px;
    display: flex;
    align-items: flex-end;
    overflow: hidden;
    margin-top: var(--nav-height);
}

.detail-hero-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    transition: transform 0.6s ease;
}

.detail-hero:hover .detail-hero-bg {
    transform: scale(1.03);
}

.detail-hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, var(--bg-primary) 0%, rgba(10,10,26,0.6) 40%, rgba(10,10,26,0.2) 100%);
    z-index: 1;
}

.detail-hero-content {
    position: relative;
    z-index: 2;
    padding: 64px 48px;
    max-width: 1280px;
    width: 100%;
    margin: 0 auto;
}

.detail-category {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: rgba(59, 130, 246, 0.2);
    border: 1px solid rgba(59, 130, 246, 0.3);
    border-radius: 50px;
    font-size: 12px;
    font-weight: 600;
    color: var(--accent-light);
    margin-bottom: 16px;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.detail-hero h1 {
    font-size: clamp(36px, 6vw, 64px);
    font-weight: 800;
    margin-bottom: 12px;
    line-height: 1.1;
}

.detail-hero .subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 600px;
    line-height: 1.6;
}

.ai-hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 20px;
    background: var(--accent-gradient);
    border-radius: 50px;
    font-size: 13px;
    font-weight: 600;
    color: white;
    margin-top: 20px;
    box-shadow: 0 4px 15px var(--accent-glow);
}

/* --- Project Info --- */
.detail-info {
    max-width: 1280px;
    margin: 0 auto;
    padding: 64px 48px;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 32px;
}

.info-card {
    padding: 32px;
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

.info-card:hover {
    background: var(--bg-card-hover);
    border-color: rgba(59, 130, 246, 0.3);
    transform: translateY(-4px);
}

.info-label {
    font-size: 12px;
    font-weight: 600;
    color: var(--accent-light);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 12px;
}

.info-value {
    font-size: 16px;
    font-weight: 500;
    line-height: 1.6;
}

.info-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 8px;
}

.info-tag {
    padding: 4px 12px;
    background: rgba(59, 130, 246, 0.1);
    border-radius: 50px;
    font-size: 13px;
    color: var(--accent-light);
}

/* --- Gallery --- */
.detail-gallery {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 48px 64px;
}

.gallery-section-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 32px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-glass);
    display: flex;
    align-items: center;
    gap: 12px;
}

.gallery-section-title span {
    font-size: 14px;
    color: var(--text-muted);
    font-weight: 400;
}

/* Full-width gallery (stacked images) */
.gallery-full-width {
    display: flex;
    flex-direction: column;
    gap: 24px;
    width: 100%;
}

.gallery-full-item {
    width: 100%;
    overflow: hidden;
    border-radius: 0;
    cursor: pointer;
    transition: var(--transition);
}

.gallery-full-item img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
}

/* Masonry-like gallery using CSS columns */
.gallery-grid {
    columns: 3;
    column-gap: 8px;
}

.gallery-item {
    break-inside: avoid;
    margin-bottom: 8px;
    border-radius: var(--radius-md);
    overflow: hidden;
    position: relative;
    cursor: pointer;
    transition: var(--transition);
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
}

.gallery-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
    border-color: rgba(59, 130, 246, 0.3);
}

.gallery-item img {
    width: 100%;
    display: block;
    transition: var(--transition-slow);
}

.gallery-item:hover img {
    transform: scale(1.03);
}

.gallery-item .caption {
    padding: 16px;
    font-size: 13px;
    color: var(--text-secondary);
    background: var(--bg-card);
}

.gallery-item .caption strong {
    display: block;
    color: var(--text-primary);
    font-size: 14px;
    margin-bottom: 4px;
}

/* Placeholder for empty images */
.gallery-placeholder {
    break-inside: avoid;
    margin-bottom: 16px;
    border-radius: var(--radius-md);
    border: 2px dashed var(--border-glass);
    padding: 48px 24px;
    text-align: center;
    color: var(--text-muted);
    font-size: 14px;
    transition: var(--transition);
}

.gallery-placeholder:hover {
    border-color: var(--accent);
    color: var(--accent-light);
}

.gallery-placeholder svg {
    margin-bottom: 12px;
    opacity: 0.5;
}

.gallery-placeholder p {
    margin: 4px 0;
}

.gallery-placeholder .file-hint {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 8px;
    font-family: var(--font-en);
}

/* --- Full width image --- */
.gallery-full {
    margin-bottom: 0;
    border-radius: var(--radius-md);
    overflow: hidden;
    position: relative;
    cursor: pointer;
    transition: var(--transition);
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
}

.gallery-full:hover {
    box-shadow: var(--shadow-glow);
    border-color: rgba(59, 130, 246, 0.3);
}

.gallery-full img {
    width: 100%;
    display: block;
}

/* --- Lightbox --- */
.lightbox {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.95);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    cursor: zoom-out;
}

.lightbox.active {
    opacity: 1;
    visibility: visible;
}

.lightbox img {
    max-width: 90vw;
    max-height: 90vh;
    object-fit: contain;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
}

.lightbox-close {
    position: absolute;
    top: 24px;
    right: 24px;
    width: 48px;
    height: 48px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 24px;
    transition: var(--transition);
    cursor: pointer;
}

.lightbox-close:hover {
    background: rgba(255,255,255,0.2);
}

.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    cursor: pointer;
    transition: var(--transition);
}

.lightbox-nav:hover {
    background: rgba(59, 130, 246, 0.5);
}

.lightbox-prev { left: 24px; }
.lightbox-next { right: 24px; }

.lightbox-counter {
    position: absolute;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 14px;
    color: rgba(255,255,255,0.5);
    font-family: var(--font-en);
}

/* --- CTA at bottom --- */
.detail-cta {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 48px 80px;
    text-align: center;
}

.detail-cta-card {
    padding: 56px 40px;
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-xl);
    position: relative;
    overflow: hidden;
}

.detail-cta-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at center, rgba(59,130,246,0.06) 0%, transparent 50%);
    pointer-events: none;
}

.detail-cta h2 {
    font-size: 28px;
    margin-bottom: 12px;
}

.detail-cta p {
    color: var(--text-secondary);
    margin-bottom: 28px;
    font-size: 15px;
}

/* --- Responsive --- */
@media (max-width: 1024px) {
    .gallery-grid { columns: 2; }
    .detail-info { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .detail-nav { padding: 0 20px; }
    .detail-hero { height: 50vh; min-height: 350px; }
    .detail-hero-content { padding: 40px 20px; }
    .detail-info { padding: 40px 20px; }
    .detail-gallery { padding: 0 20px 40px; }
    .detail-cta { padding: 0 20px 60px; }
    .gallery-grid { columns: 1; }
    .lightbox-nav { display: none; }
}

/* Top Button */
.top-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1000;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.top-btn.visible {
    opacity: 1;
    visibility: visible;
}

.top-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-3px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.4);
}

.top-btn svg {
    width: 24px;
    height: 24px;
    stroke: currentColor;
    stroke-width: 2;
    fill: none;
    stroke-linecap: round;
    stroke-linejoin: round;
}

/* Section nav buttons */
.section-nav {
    display: flex;
    justify-content: center;
    gap: 12px;
    padding: 24px 0 32px;
    max-width: 900px;
    margin: 0 auto;
}
.section-nav a {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 24px;
    border-radius: 100px;
    border: 1px solid var(--border-glass);
    background: rgba(59, 130, 246, 0.08);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 15px;
    font-weight: 600;
    transition: var(--transition);
}
.section-nav a:hover, .section-nav a.active {
    background: var(--accent-primary);
    color: #fff;
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-glow);
}