/* ================================================================
   梦绘希望 v2 — 美术馆极简设计系统
   设计：UI/UX Pro Max (Swiss Minimalism + Museum/Gallery)
   日期：2026-06-19
   ================================================================ */

:root {
    /* ── 美术馆黑白配色（方案 A） ── */
    --primary:       #DD4124;
    --primary-light: #C43720;
    --accent:        #D4A017;
    --accent-hover:  #B8860B;
    --on-primary:    #0A0A0A;
    --bg:            #FAFAFA;
    --bg-alt:        #F4F4F5;
    --white:         #FFFFFF;
    --text:          #18181B;
    --text-secondary:#71717A;
    --text-tertiary: #A1A1AA;
    --text-inverse:  #F4F4F5;
    --border:        #E4E4E7;
    --border-light:  #F4F4F5;

    /* ── 极简阴影 ── */
    --shadow-none:  none;
    --shadow-sm:    0 1px 2px rgba(0,0,0,0.04);
    --shadow-md:    0 4px 12px rgba(0,0,0,0.06);
    --shadow-lg:    0 8px 24px rgba(0,0,0,0.08);

    /* ── 间距（8px 网格） ── */
    --space-xs:  4px;
    --space-sm:  8px;
    --space-md:  16px;
    --space-lg:  24px;
    --space-xl:  32px;
    --space-2xl: 48px;
    --space-3xl: 64px;
    --space-4xl: 96px;

    /* ── 圆角 ── */
    --radius:    4px;
    --radius-md: 6px;
    --radius-lg: 8px;

    /* ── 字体 ── */
    /* ── 字体（系统原生，零外部依赖，国内秒开） ── */
    --font-heading:  system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
    --font-body:     'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', 'Noto Sans SC', sans-serif;
    --font-display:  'Noto Serif SC', 'STSong', 'SimSun', 'PingFang SC', serif;

    /* ── 过渡 ── */
    --transition: 200ms ease;
}

/* ================================================================
   RESET
   ================================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    background: var(--bg);
    color: var(--text);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}
a { text-decoration: none; color: inherit; -webkit-tap-highlight-color: transparent; }
img { max-width: 100%; height: auto; display: block; }
button, a, [role="button"] { touch-action: manipulation; }
::selection { background: var(--primary); color: var(--on-primary); }

/* ── 无障碍：跳过导航链接 ── */
.skip-link {
    position: absolute; top: -100px; left: 16px;
    background: var(--primary); color: var(--on-primary);
    padding: 10px 18px; border-radius: var(--radius);
    font-weight: 600; z-index: 9999; font-size: 0.9rem;
    transition: top 0.2s;
}
.skip-link:focus { top: 8px; }

/* ================================================================
   NAVBAR — 白色底 + 极简分隔线
   ================================================================ */
.navbar {
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    position: sticky; top: 0; z-index: 1000;
    padding: 0.55rem 0;
}
.navbar-brand {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text) !important;
    letter-spacing: 0.5px;
}
.navbar .nav-link {
    color: var(--text-secondary) !important;
    font-size: 0.85rem; font-weight: 500;
    padding: 0.35rem 0.9rem !important;
    border-radius: var(--radius);
    transition: color var(--transition);
}
.navbar .nav-link:hover { color: var(--text) !important; background: transparent; }
.navbar .nav-link.active {
    color: var(--accent) !important;
    font-weight: 600;
    background: transparent;
    box-shadow: inset 0 -2px 0 var(--accent);
}

/* ================================================================
   EMPTY GALLERY — 美术馆极简展签风格
   ================================================================ */
.empty-gallery {
    text-align: center;
    padding: 6rem 2rem 5rem;
    max-width: 480px;
    margin: 0 auto;
}
.empty-icon {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    opacity: 0.3;
    line-height: 1;
}
.empty-gallery h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 0.75rem;
    letter-spacing: 1px;
}
.empty-quote {
    font-family: var(--font-display);
    font-size: 1.05rem;
    color: var(--text-tertiary);
    font-style: italic;
    margin-bottom: 1.25rem;
    letter-spacing: 1px;
}
.empty-gallery p {
    font-size: 0.92rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}
.empty-status {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--accent);
    border: 1px solid var(--accent);
    padding: 6px 18px;
    border-radius: 2px;
}
.empty-link {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border);
    padding-bottom: 2px;
    transition: all var(--transition);
}
.empty-link:hover {
    color: var(--text);
    border-color: var(--text);
}

/* ================================================================
   HERO — 禅绕画纹理叠加
   ================================================================ */
.hero {
    background: var(--primary);
    position: relative; overflow: hidden;
    padding: 110px 0 100px;
}
.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120' viewBox='0 0 120 120'%3E%3Ccircle cx='60' cy='60' r='48' fill='none' stroke='rgba(255,255,255,0.03)' stroke-width='0.5'/%3E%3Ccircle cx='60' cy='60' r='36' fill='none' stroke='rgba(255,255,255,0.03)' stroke-width='0.5'/%3E%3Ccircle cx='60' cy='60' r='24' fill='none' stroke='rgba(255,255,255,0.03)' stroke-width='0.5'/%3E%3Ccircle cx='60' cy='60' r='12' fill='none' stroke='rgba(255,255,255,0.04)' stroke-width='0.5'/%3E%3Ccircle cx='60' cy='60' r='3' fill='rgba(255,255,255,0.04)'/%3E%3Cpath d='M60 12 Q78 30 60 48' fill='none' stroke='rgba(255,255,255,0.03)' stroke-width='0.5'/%3E%3Cpath d='M60 72 Q42 90 60 108' fill='none' stroke='rgba(255,255,255,0.03)' stroke-width='0.5'/%3E%3Cpath d='M12 60 Q30 78 48 60' fill='none' stroke='rgba(255,255,255,0.03)' stroke-width='0.5'/%3E%3Cpath d='M72 60 Q90 42 108 60' fill='none' stroke='rgba(255,255,255,0.03)' stroke-width='0.5'/%3E%3C/svg%3E");
    background-size: 120px 120px;
    opacity: 0.7;
    z-index: 1;
    pointer-events: none;
}
.hero-inner { position: relative; z-index: 2; max-width: 720px; margin: 0 auto; padding: 0 20px; text-align: center; }

.hero-tag {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: 0.68rem; font-weight: 600;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 28px;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.6rem, 5.5vw, 3.6rem);
    font-weight: 700;
    line-height: 1.2;
    color: var(--on-primary);
    letter-spacing: -1px;
    margin-bottom: 24px;
}
.hero-title span {
    color: var(--on-primary);
}

.hero-desc {
    font-size: 1.05rem;
    color: rgba(10,10,10,0.8);
    line-height: 1.8;
    margin-bottom: 40px;
    max-width: 480px;
    margin-left: auto; margin-right: auto;
}

.hero-cta {
    display: flex; gap: 12px;
    justify-content: center; flex-wrap: wrap;
}

.btn-primary-hero {
    padding: 14px 36px;
    background: var(--white);
    color: var(--text) !important;
    border-radius: var(--radius);
    font-family: var(--font-heading);
    font-size: 0.9rem; font-weight: 600;
    display: inline-block;
    transition: all var(--transition);
    letter-spacing: 0.3px;
}
.btn-primary-hero:hover {
    background: var(--text-inverse);
    color: var(--text) !important;
    transform: translateY(-1px);
}

.btn-outline-hero {
    padding: 14px 36px;
    border: 1.5px solid rgba(10,10,10,0.25);
    color: var(--on-primary) !important;
    border-radius: var(--radius);
    font-family: var(--font-heading);
    font-size: 0.9rem; font-weight: 500;
    display: inline-block;
    transition: all var(--transition);
    letter-spacing: 0.3px;
}
.btn-outline-hero:hover {
    border-color: rgba(10,10,10,0.55);
    color: var(--on-primary) !important;
}

/* ================================================================
   STATS BAR — 白底 + 细线分割
   ================================================================ */
.stats-bar {
    background: var(--white);
    border-bottom: 1px solid var(--border);
}
.stats-inner {
    max-width: 720px; margin: 0 auto;
    padding: 0 20px; display: flex;
}
.stat-item {
    flex: 1; text-align: center;
    padding: 24px 12px;
}
.stat-item + .stat-item { border-left: 1px solid var(--border-light); }
.stat-num {
    display: block;
    font-family: var(--font-heading);
    font-size: 1.75rem; font-weight: 700;
    color: var(--text);
    line-height: 1.2;
}
.stat-label {
    font-size: 0.78rem;
    color: var(--text-tertiary);
    font-weight: 500;
    margin-top: 2px;
    letter-spacing: 1px;
    text-transform: uppercase;
}

/* ================================================================
   SECTION HEAD
   ================================================================ */
.section-label {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--text-tertiary);
    margin-bottom: 8px;
}
.section-title {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: var(--text);
    margin-bottom: 10px;
}
.section-sub {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

/* ================================================================
   CATEGORIES — 三栏白底卡片
   ================================================================ */
.cat-section {
    padding: 80px 0;
    text-align: center;
}
.cat-section .section-label { margin-bottom: 8px; }
.cat-section .section-title { margin-bottom: 40px; }

.cat-grid {
    max-width: 860px; margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.cat-card {
    display: block;
    background: var(--white);
    border-radius: var(--radius);
    padding: 36px 20px 28px;
    border: 1px solid var(--border);
    transition: all var(--transition);
    text-align: center;
    position: relative;
}
.cat-card:hover {
    transform: translateY(-2px);
    border-color: var(--text-secondary);
    box-shadow: var(--shadow-md);
}

.cat-icon {
    display: block;
    margin-bottom: 14px;
    color: var(--text-secondary);
    opacity: 0.5;
}
.cat-card:hover .cat-icon { color: var(--primary); opacity: 0.7; }
.cat-card h3 {
    font-family: var(--font-heading);
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 6px;
    letter-spacing: -0.3px;
}
.cat-card p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 14px;
}
.cat-arrow {
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-tertiary);
    transition: color var(--transition);
    letter-spacing: 0.3px;
}
.cat-card:hover .cat-arrow { color: var(--accent); }

/* 移除旧版彩色顶部条 */
.cat-card::before { display: none; }

/* ================================================================
   WORKS — 近期作品横向轮播
   ================================================================ */
.works-section {
    padding: 80px 0;
    background: var(--bg-alt);
    text-align: center;
    overflow: hidden;
}

/* 轮播舞台 — 裁剪溢出 */
.carousel-stage {
    max-width: 100%;
    overflow: hidden;
    position: relative;
    margin-top: 28px;
}

/* 轮播轨道 — 水平排列 + 无限滚动动画 */
.carousel-track {
    display: flex;
    gap: 16px;
    width: max-content;
    animation: carouselScroll 30s linear infinite;
    padding: 0 20px;
}

@keyframes carouselScroll {
    0%   { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* 轮播中的卡片 — 固定宽度 */
.carousel-track .work-card {
    flex-shrink: 0;
    width: 220px;
    display: block;
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border-light);
    transition: all var(--transition);
    break-inside: unset;
    margin-bottom: 0;
}
.carousel-track .work-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: var(--border);
}

.carousel-track .work-thumb {
    position: relative;
    background: var(--bg-alt);
    line-height: 0;
}
.carousel-track .work-thumb img {
    width: 100%; display: block;
    aspect-ratio: 2/3;
    object-fit: cover;
    transition: transform 400ms ease;
}
.carousel-track .work-card:hover .work-thumb img { transform: scale(1.04); }

.work-thumb-empty {
    width: 100%; height: 100%;
    display: flex; align-items: center; justify-content: center;
    font-size: 2rem;
    background: var(--bg-alt);
    color: var(--text-tertiary);
}

.work-tag {
    position: absolute; top: 10px; left: 10px;
    background: rgba(0,0,0,0.6);
    color: #fff;
    font-size: 0.65rem; font-weight: 600;
    padding: 3px 10px;
    border-radius: 2px;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.work-info { padding: 14px 12px; text-align: left; }
.work-info h4 {
    font-family: var(--font-heading);
    font-size: 0.88rem; font-weight: 600;
    color: var(--text);
    margin-bottom: 2px;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
    letter-spacing: -0.2px;
}
.work-info span {
    font-size: 0.8rem;
    color: var(--text-tertiary);
}

/* ================================================================
   ABOUT — 左文右数字
   ================================================================ */
.about-section {
    padding: 80px 0;
    background: var(--white);
}
.about-inner {
    max-width: 860px; margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px; align-items: center;
}
.about-left h2 {
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    margin-bottom: 14px;
}
.about-left p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.8;
}
.about-right { display: flex; gap: 12px; }
.a-stat-card {
    flex: 1;
    background: var(--bg-alt);
    border-radius: var(--radius);
    padding: 28px 12px;
    text-align: center;
    border: 1px solid var(--border-light);
}
.a-stat-card .num {
    display: block;
    font-family: var(--font-heading);
    font-size: 1.75rem; font-weight: 700;
    color: var(--text);
    line-height: 1.2;
}
.a-stat-card .label {
    font-size: 0.78rem;
    color: var(--text-tertiary);
    font-weight: 500;
    letter-spacing: 1px;
    text-transform: uppercase;
}

/* ================================================================
   FOOTER — 深色底
   ================================================================ */
.footer {
    background: var(--primary);
    color: rgba(10,10,10,0.75);
    padding: 48px 0 24px;
    margin-top: 0 !important;
}
.footer-inner {
    max-width: 860px; margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
}
.footer-col h5 {
    font-family: var(--font-heading);
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: rgba(10,10,10,0.4);
    margin-bottom: 12px;
    font-weight: 600;
}
.footer-col p {
    font-size: 0.85rem;
    line-height: 1.7;
}
.footer-col a {
    display: block;
    font-size: 0.82rem;
    color: rgba(10,10,10,0.6);
    padding: 3px 0;
    transition: color var(--transition);
}
.footer-col a:hover { color: rgba(10,10,10,0.9); }
.footer-bottom {
    max-width: 860px; margin: 24px auto 0;
    padding: 16px 20px 0;
    border-top: 1px solid rgba(10,10,10,0.1);
    text-align: center;
    font-size: 0.75rem;
    color: rgba(10,10,10,0.3);
}

/* ================================================================
   GALLERY — 分类页
   ================================================================ */
.gallery-page {
    max-width: 1000px; margin: 32px auto 60px;
    padding: 0 20px;
}
.gallery-title {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    margin-bottom: 20px;
}
.breadcrumb { margin-bottom: 8px; }
.breadcrumb-item a { color: var(--text-secondary); }
.breadcrumb-item a:hover { color: var(--text); }
.breadcrumb-item.active { color: var(--text-tertiary); }
.breadcrumb-item+.breadcrumb-item::before { color: var(--border); }

.category-tabs {
    display: flex; gap: 4px; flex-wrap: wrap;
    margin-bottom: 32px;
}
.tab-link {
    padding: 7px 20px;
    border-radius: var(--radius);
    font-size: 0.85rem; font-weight: 500;
    background: var(--bg-alt);
    color: var(--text-secondary);
    transition: all var(--transition);
}
.tab-link:hover { color: var(--text); }
.tab-link.active {
    background: var(--primary);
    color: var(--on-primary);
}

/* ================================================================
   MASONRY — 瀑布流
   ================================================================ */
.masonry-grid {
    column-count: 4;
    column-gap: 16px;
}
.masonry-item {
    break-inside: avoid;
    margin-bottom: 16px;
}
.masonry-card {
    display: block;
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border-light);
    transition: all var(--transition);
}
.masonry-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: var(--border);
}
.masonry-img-wrap {
    position: relative;
    background: var(--bg-alt);
    line-height: 0;
}
.masonry-img-wrap img {
    width: 100%; display: block;
    transition: transform 400ms ease;
}
.masonry-card:hover .masonry-img-wrap img { transform: scale(1.04); }
.masonry-placeholder {
    min-height: 180px;
    display: flex; align-items: center; justify-content: center;
    font-size: 2rem;
    background: var(--bg-alt);
    color: var(--text-tertiary);
}
.masonry-info { padding: 12px; }
.masonry-info h6 {
    font-family: var(--font-heading);
    font-size: 0.85rem; font-weight: 600;
    color: var(--text);
    margin: 0;
    letter-spacing: -0.2px;
}
.masonry-info .masonry-author {
    font-size: 0.8rem;
    color: var(--text-tertiary);
    margin: 2px 0 0;
}
.masonry-tag {
    position: absolute; top: 10px; left: 10px;
    background: rgba(0,0,0,0.6);
    color: #fff;
    font-size: 0.65rem; font-weight: 600;
    padding: 3px 10px;
    border-radius: 2px;
    letter-spacing: 1px;
    text-transform: uppercase;
    z-index: 2;
}

/* ================================================================
   DETAIL — 作品详情（桌面端左右分栏）
   ================================================================ */
.artwork-image-wrap {
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border-light);
}
.artwork-image-wrap img { width: 100%; }
.detail-placeholder {
    min-height: 400px;
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    gap: 12px;
    background: var(--bg-alt);
    border-radius: var(--radius);
    font-size: 2.5rem;
    color: var(--text-tertiary);
}
.detail-placeholder p { font-size: 0.9rem; margin: 0; }
.artwork-title {
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    margin-bottom: 16px;
    color: var(--text);
}
.artwork-meta {
    font-size: 0.92rem;
    color: var(--text-secondary);
    margin-bottom: 6px;
}
.artwork-meta strong {
    color: var(--text);
    font-weight: 500;
    min-width: 80px;
    display: inline-block;
}
.artwork-desc {
    line-height: 1.8;
    color: var(--text-secondary);
    margin-top: 8px;
}

.prev-next-link {
    display: block;
    padding: 14px 18px;
    background: var(--white);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    transition: all var(--transition);
}
.prev-next-link:hover {
    border-color: var(--text-secondary);
}
.prev-next-link small {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    display: block;
    margin-bottom: 4px;
}
.prev-next-link span {
    font-family: var(--font-heading);
    font-weight: 500;
    color: var(--text);
    font-size: 0.9rem;
}

/* ================================================================
   PAGINATION
   ================================================================ */
.pagination .page-link {
    color: var(--text-secondary);
    border-radius: var(--radius);
    margin: 0 3px;
    border-color: var(--border);
}
.pagination .active .page-link {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--on-primary);
}

/* ================================================================
   ADMIN — 后台保持不变
   ================================================================ */
.admin-login-body {
    background: var(--primary);
    min-height: 100vh;
    display: flex; align-items: center; justify-content: center;
}
.login-wrap { width: 100%; max-width: 380px; padding: 20px; }
.login-back {
    color: rgba(10,10,10,0.75);
    font-size: 0.85rem;
    display: inline-block;
    margin-bottom: 24px;
}
.login-back:hover { color: rgba(10,10,10,0.95); }
.login-card {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 40px 36px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.25);
}
.login-brand { text-align: center; margin-bottom: 28px; }
.login-brand h1 {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text);
    letter-spacing: -0.3px;
}
.login-brand .login-num {
    font-size: 0.68rem;
    letter-spacing: 3px;
    color: var(--text-tertiary);
    display: block;
    margin-bottom: 4px;
    text-transform: uppercase;
    font-family: var(--font-heading);
}
.login-alert {
    padding: 10px 14px; margin-bottom: 16px;
    font-size: 0.85rem;
    border: 1px solid #fecaca;
    color: #dc2626;
    background: #fef2f2;
    border-radius: var(--radius);
}
.login-field { margin-bottom: 16px; }
.login-field label {
    display: block;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--text-tertiary);
    margin-bottom: 4px;
    font-weight: 600;
    font-family: var(--font-heading);
}
.login-field input {
    width: 100%; padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.95rem;
    outline: none;
    transition: border-color var(--transition);
}
.login-field input:focus { border-color: var(--text); }
.login-card button[type="submit"] {
    width: 100%; padding: 12px;
    background: var(--primary);
    color: var(--on-primary);
    border: none;
    border-radius: var(--radius);
    font-size: 0.88rem;
    font-weight: 600;
    letter-spacing: 1.5px;
    cursor: pointer;
    text-transform: uppercase;
    transition: opacity var(--transition);
}
.login-card button[type="submit"]:hover { opacity: 0.85; }
.login-card button[type="submit"]:disabled { opacity: 0.5; }

.admin-page {
    max-width: 1000px; margin: 36px auto 60px;
    padding: 0 20px;
}
.admin-back { color: var(--text-secondary); font-size: 0.85rem; }
.admin-back:hover { color: var(--text); }
.admin-topbar {
    display: flex; justify-content: space-between; align-items: flex-end;
    margin: 12px 0 28px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}
.admin-topbar h1 {
    font-family: var(--font-heading);
    font-size: 1.5rem; font-weight: 700;
    letter-spacing: -0.5px;
}
.admin-actions { display: flex; gap: 10px; }
.btn-admin {
    padding: 9px 22px;
    background: var(--primary);
    color: var(--on-primary);
    font-size: 0.85rem; font-weight: 600;
    border-radius: var(--radius);
    transition: opacity var(--transition);
}
.btn-admin:hover { opacity: 0.85; color: var(--on-primary); }
.btn-admin-outline {
    padding: 9px 22px;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 0.85rem; font-weight: 600;
    border-radius: var(--radius);
    transition: all var(--transition);
}
.btn-admin-outline:hover { border-color: var(--text-secondary); color: var(--text); }

.admin-table { width: 100%; border-collapse: collapse; }
.admin-table-wrap {
    background: #fff;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    overflow: hidden;
}
.admin-table th {
    text-align: left; padding: 12px 14px;
    background: var(--bg-alt);
    border-bottom: 1px solid var(--border);
    font-size: 0.68rem; text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--text-tertiary);
    font-weight: 600;
    font-family: var(--font-heading);
}
.admin-table td {
    padding: 12px 14px;
    border-bottom: 1px solid var(--border-light);
    font-size: 0.88rem;
    color: var(--text-secondary);
}
.admin-table tr:last-child td { border-bottom: none; }
.admin-table td strong { color: var(--text); font-weight: 600; }
.td-img img {
    width: 40px; height: 40px;
    object-fit: cover; border-radius: var(--radius);
}
.td-img-empty {
    width: 40px; height: 40px;
    background: var(--bg-alt);
    border-radius: var(--radius);
}
.admin-badge {
    font-size: 0.68rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-secondary);
    background: var(--bg-alt);
    padding: 4px 10px;
    border-radius: 2px;
    font-family: var(--font-heading);
}
.td-actions a { color: var(--text-secondary); font-size: 0.85rem; margin-right: 12px; }
.td-actions a:hover { color: var(--text); }
.btn-del {
    background: none; border: none;
    color: #dc2626; font-size: 0.85rem; cursor: pointer;
}
.btn-del:hover { color: #b91c1c; }
.admin-pagination {
    text-align: center; padding: 24px 0;
    display: flex; justify-content: center; gap: 16px;
}
.admin-pagination a, .admin-pagination span {
    color: var(--text-secondary); font-size: 0.85rem;
}
.admin-pagination a:hover { color: var(--text); }
.admin-empty { text-align: center; padding: 60px 0; }
.admin-empty p { color: var(--text-tertiary); }

.admin-form { max-width: 640px; margin-top: 24px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 18px; }
.form-group label {
    display: block;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--text-tertiary);
    margin-bottom: 4px;
    font-weight: 600;
    font-family: var(--font-heading);
}
.form-group label span { color: var(--accent); }
.form-group input[type="text"], .form-group input[type="password"],
.form-group select, .form-group textarea {
    width: 100%; padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.95rem;
    color: var(--text);
    outline: none;
    font-family: var(--font-body);
    transition: border-color var(--transition);
    resize: vertical;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    border-color: var(--text);
}
.form-group select { appearance: none; background: #fff; cursor: pointer; }
.file-input-wrap input[type="file"] { font-size: 0.9rem; color: var(--text-secondary); }
.file-hint { display: block; font-size: 0.75rem; color: var(--text-tertiary); margin-top: 4px; }
.current-img { margin-bottom: 6px; }
.current-img img { max-width: 120px; border-radius: var(--radius); }
.no-img { color: var(--text-tertiary); font-size: 0.85rem; }
.form-actions { display: flex; gap: 10px; margin-top: 24px; }
.form-actions button[type="submit"] {
    padding: 12px 32px;
    background: var(--primary);
    color: var(--on-primary);
    border: none;
    border-radius: var(--radius);
    font-size: 0.85rem; font-weight: 600;
    letter-spacing: 0.5px; cursor: pointer;
    transition: opacity var(--transition);
}
.form-actions button[type="submit"]:hover { opacity: 0.85; }
.btn-cancel {
    padding: 12px 32px;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    border-radius: var(--radius);
    font-size: 0.85rem;
    display: inline-flex; align-items: center;
    transition: all var(--transition);
}
.btn-cancel:hover { border-color: var(--text-secondary); color: var(--text); }

/* ================================================================
   BACK TO TOP
   ================================================================ */
#back-to-top {
    display: none;
    position: fixed;
    bottom: 32px; right: 32px;
    z-index: 1000;
    width: 44px; height: 44px;
    border: 1px solid var(--border);
    border-radius: 50%;
    background: var(--white);
    color: var(--text);
    font-size: 1.2rem;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
}
#back-to-top:hover {
    background: var(--primary);
    color: var(--on-primary);
    border-color: var(--primary);
    transform: translateY(-1px);
}

/* ================================================================
   EMPTY STATE
   ================================================================ */
.empty-state {
    text-align: center;
    padding: 4rem 1.5rem;
}
.empty-state h3 {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text);
}
.empty-state p {
    max-width: 400px;
    margin: 0 auto 0.5rem;
}

/* ================================================================
   NAVBAR SEARCH
   ================================================================ */
.navbar form input[type="search"] {
    border-radius: var(--radius);
    border: 1px solid var(--border);
    font-size: 0.85rem;
    padding: 0.35rem 0.9rem;
    background: var(--bg-alt);
    transition: all var(--transition);
}
.navbar form input[type="search"]:focus {
    background: #fff;
    border-color: var(--text);
    box-shadow: none;
}

/* ================================================================
   LOGO
   ================================================================ */
.site-logo-wrap { padding: 2px 0; }
.site-logo-img { height: 38px; width: auto; object-fit: contain; }

/* ================================================================
   RESPONSIVE — 移动端全面优化
   ================================================================ */

/* ── 平板 (≤991px) ─────────────────────────── */
@media (max-width: 991px) {
    .masonry-grid { column-count: 3; column-gap: 14px; }
    .masonry-item { margin-bottom: 14px; }
    .carousel-track .work-card { width: 180px; }
    .carousel-track { gap: 12px; }
}

/* ── 手机 (≤768px) ─────────────────────────── */
@media (max-width: 768px) {
    /* Hero */
    .hero { padding: 64px 0 48px; }
    .hero-title { font-size: clamp(1.8rem, 7vw, 2.4rem); }
    .hero-desc { font-size: 0.92rem; padding: 0 8px; }
    .hero-cta { flex-direction: column; align-items: center; gap: 10px; }
    .btn-primary-hero, .btn-outline-hero { width: 100%; max-width: 260px; text-align: center; }

    /* Sections */
    .cat-section, .works-section, .about-section { padding: 56px 0; }
    .section-title { font-size: 1.5rem; }

    /* Categories */
    .cat-grid { grid-template-columns: 1fr; max-width: 360px; gap: 12px; }
    .cat-card { padding: 28px 20px 22px; }

    /* Stats */
    .stats-inner { flex-wrap: wrap; }
    .stat-item { flex: 1 1 50%; padding: 16px 8px; }
    .stat-item:nth-child(2) { border-left: 1px solid var(--border-light) !important; }
    .stat-item:nth-child(3) { border-left: none; border-top: 1px solid var(--border-light); flex: 1 1 100%; }
    .stat-num { font-size: 1.4rem; }

    /* Carousel */
    .carousel-track .work-card { width: 160px; }
    .carousel-track { gap: 10px; padding: 0 12px; }

    /* About */
    .about-inner { grid-template-columns: 1fr; gap: 24px; }
    .about-right { flex-direction: column; gap: 10px; }
    .about-left h2 { font-size: 1.4rem; }
    .a-stat-card { padding: 20px 10px; }
    .a-stat-card .num { font-size: 1.4rem; }

    /* Masonry */
    .masonry-grid { column-count: 2; column-gap: 10px; }
    .masonry-item { margin-bottom: 10px; }
    .masonry-info { padding: 10px 8px; }
    .masonry-info h6 { font-size: 0.8rem; }

    /* Detail */
    .artwork-title { font-size: 1.3rem; }
    .artwork-meta { font-size: 0.85rem; }
    .artwork-meta strong { min-width: 56px; }
    .detail-placeholder { min-height: 280px; font-size: 2rem; }
    .prev-next-link { padding: 12px 14px; }
    .prev-next-link span { font-size: 0.82rem; }

    /* Gallery tabs */
    .category-tabs { gap: 4px; }
    .tab-link { padding: 8px 14px; font-size: 0.8rem; }
    .gallery-title { font-size: 1.3rem; }

    /* Footer */
    .footer-inner { grid-template-columns: 1fr; gap: 20px; }
    .footer { padding: 36px 0 20px; }
    .footer-col a { padding: 6px 0; }

    /* Back to top */
    #back-to-top { bottom: 20px; right: 16px; width: 40px; height: 40px; font-size: 1rem; }

    /* Empty gallery */
    .empty-gallery { padding: 3rem 1.5rem 2.5rem; }
    .empty-icon { font-size: 2.5rem; }
    .empty-gallery h3 { font-size: 1.2rem; }
    .empty-quote { font-size: 0.9rem; }

    /* Admin */
    .form-row { grid-template-columns: 1fr; }
    .admin-topbar { flex-direction: column; align-items: flex-start; gap: 10px; }
    .login-card { padding: 28px 20px; }

    /* Touch targets — 确保所有交互元素 ≥44px */
    .tab-link { padding: 10px 16px; }
    .pagination .page-link { padding: 8px 14px; min-width: 44px; text-align: center; }

    /* 防止 iOS 自动缩放 — 输入框最小 16px */
    .navbar form input[type="search"],
    .login-field input,
    .form-group input,
    .form-group select,
    .form-group textarea { font-size: 16px; }
}

/* ── 小手机 (≤480px) ───────────────────────── */
@media (max-width: 480px) {
    /* 更紧凑 */
    .hero { padding: 48px 0 40px; }
    .hero-title { font-size: 1.6rem; letter-spacing: -0.5px; }
    .hero-tag { font-size: 0.62rem; letter-spacing: 3px; margin-bottom: 18px; }
    .hero-desc { font-size: 0.85rem; }
    .hero-cta .btn-primary-hero,
    .hero-cta .btn-outline-hero { padding: 12px 24px; font-size: 0.85rem; }

    .cat-section, .works-section, .about-section { padding: 40px 0; }
    .section-title { font-size: 1.3rem; }

    .carousel-track .work-card { width: 140px; }
    .carousel-track { gap: 8px; padding: 0 8px; }

    .masonry-grid { column-gap: 8px; }
    .masonry-item { margin-bottom: 8px; }
    .masonry-tag { top: 6px; left: 6px; font-size: 0.6rem; padding: 2px 8px; }

    /* Nav 品牌字缩小 */
    .navbar-brand { font-size: 1rem; }

    /* Gallery breadcrumb */
    .breadcrumb { font-size: 0.82rem; }

    /* Detail — 信息区去掉右内边距 */
    .artwork-info { padding-left: 0 !important; }
    .artwork-title { font-size: 1.15rem; }

    /* Tabs 可滚动 */
    .category-tabs { flex-wrap: nowrap; overflow-x: auto; -webkit-overflow-scrolling: touch; padding-bottom: 4px; }
    .tab-link { flex-shrink: 0; white-space: nowrap; }

    /* Stats */
    .stat-num { font-size: 1.2rem; }
    .stat-label { font-size: 0.7rem; }

    /* Footer */
    .footer-col h5 { font-size: 0.68rem; }
    .footer-col a { font-size: 0.8rem; }

    /* Back to top */
    #back-to-top { bottom: 16px; right: 12px; width: 36px; height: 36px; }

    /* Empty gallery */
    .empty-gallery { padding: 2rem 1rem 2rem; }
    .empty-icon { font-size: 2rem; }
    .empty-gallery h3 { font-size: 1.1rem; }
}

/* ── 极小屏 (≤375px iPhone SE) ─────────────── */
@media (max-width: 375px) {
    .hero-title { font-size: 1.45rem; }
    .carousel-track .work-card { width: 130px; }
    .carousel-track { gap: 6px; }
}