/* ============================================================
   非遗主题 - 独立页面
   设计风格：深空蓝 + 科技蓝 + 鎏金
   ============================================================ */

:root {
    --deep-blue: #071D49;
    --tech-blue: #0D6EFD;
    --tech-blue-light: #3B8BFF;
    --gold: #D4AF37;
    --gold-light: #F0D060;
    --white: #FFFFFF;
    --bg-dark: #020C24;
    --bg-section: #060E2B;
    --text-primary: #FFFFFF;
    --text-secondary: rgba(255,255,255,0.7);
    --text-muted: rgba(255,255,255,0.45);
    --border-subtle: rgba(255,255,255,0.06);
    --border-medium: rgba(255,255,255,0.12);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --transition: 0.35s ease;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    font-family: "PingFang SC", "Microsoft YaHei", "HarmonyOS Sans", -apple-system, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }

::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.12); border-radius: 3px; }

/* ============================================================
   导航栏
   ============================================================ */
.header {
    position: fixed;
    top: 0; left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(2,12,36,0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-subtle);
    padding: 0 24px;
}

.nav-container {
    max-width: 1440px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 700;
    color: var(--white);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 28px;
}

.nav-links a {
    font-size: 14px;
    color: var(--text-secondary);
    padding: 8px 0;
    transition: color var(--transition);
    white-space: nowrap;
}

.nav-links a:hover { color: var(--white); }
.nav-links a.active { color: var(--tech-blue-light); font-weight: 600; }

.nav-dropdown { position: relative; }
.nav-dropdown .arrow { font-size: 10px; margin-left: 4px; }

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 160px;
    background: rgba(6,14,43,0.95);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius-sm);
    padding: 8px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: all var(--transition);
    backdrop-filter: blur(20px);
}

.nav-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu a {
    display: block;
    padding: 8px 20px;
    font-size: 13px;
    color: var(--text-secondary);
    transition: all var(--transition);
}

.dropdown-menu a:hover {
    background: rgba(13,110,253,0.1);
    color: var(--tech-blue-light);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 13px;
}

.nav-actions a { color: var(--text-secondary); transition: color var(--transition); }
.nav-actions a:hover { color: var(--white); }

.btn-register {
    padding: 8px 20px;
    background: linear-gradient(135deg, var(--tech-blue), #2563EB);
    color: var(--white) !important;
    border-radius: 20px;
    font-weight: 600;
}

/* ============================================================
   Banner
   ============================================================ */
.hero-banner {
    position: relative;
    width: 100%;
    height: 380px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: radial-gradient(ellipse at 50% 40%, #0A1E4A 0%, #020C24 70%);
    padding-top: 64px;
}

#starCanvas {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    z-index: 1;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 50% 60%, rgba(13,110,253,0.06), transparent 50%);
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    padding: 0 24px;
}

.hero-logo {
    margin-bottom: 16px;
    opacity: 0.9;
}

.hero-title {
    font-size: 42px;
    font-weight: 800;
    letter-spacing: 3px;
    background: linear-gradient(135deg, #FFFFFF 0%, #D4AF37 50%, #FFFFFF 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.hero-subtitle {
    font-size: 16px;
    color: var(--text-secondary);
    letter-spacing: 2px;
}

/* ============================================================
   搜索栏
   ============================================================ */
.search-bar {
    background: var(--bg-dark);
    padding: 24px 0;
}

.search-inner {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.search-input-wrap {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--border-subtle);
    border-radius: 28px;
    transition: all var(--transition);
}

.search-input-wrap:focus-within {
    border-color: rgba(13,110,253,0.3);
    background: rgba(13,110,253,0.04);
}

.search-input-wrap svg {
    color: var(--text-muted);
    flex-shrink: 0;
}

.search-input-wrap input {
    flex: 1;
    background: none;
    border: none;
    outline: none;
    color: var(--white);
    font-size: 14px;
}

.search-input-wrap input::placeholder { color: var(--text-muted); }

.btn-my-group {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 14px;
    font-weight: 600;
    color: var(--white);
    background: linear-gradient(135deg, var(--tech-blue), #2563EB);
    border-radius: 28px;
    box-shadow: 0 4px 16px rgba(13,110,253,0.25);
    transition: all var(--transition);
    white-space: nowrap;
}

.btn-my-group:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(13,110,253,0.4);
}

/* ============================================================
   非遗类型切换
   ============================================================ */
.type-switch {
    background: var(--bg-dark);
    padding: 20px 0 32px;
}

.type-inner {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    gap: 20px;
}

.type-card {
    flex: 1;
    position: relative;
    height: 220px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all var(--transition);
}

.type-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.4);
}

.type-card.active {
    border-color: var(--gold);
    box-shadow: 0 0 30px rgba(212,175,55,0.15);
}

.type-img {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    transition: transform 0.6s ease;
}

.type-card:hover .type-img { transform: scale(1.05); }

.type-mask {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(2,12,36,0.9) 0%, rgba(2,12,36,0.3) 50%, rgba(2,12,36,0.1) 100%);
}

.type-label {
    position: absolute;
    bottom: 20px;
    left: 0;
    right: 0;
    text-align: center;
    font-size: 18px;
    font-weight: 700;
    color: var(--white);
    z-index: 2;
    letter-spacing: 2px;
    text-shadow: 0 2px 8px rgba(0,0,0,0.5);
}

/* ============================================================
   国内标签
   ============================================================ */
.region-tag {
    background: var(--bg-dark);
    padding: 16px 0;
}

.region-inner {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.region-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--white);
    letter-spacing: 1px;
}

.region-line {
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, var(--border-medium), transparent);
}

/* ============================================================
   城市网格
   ============================================================ */
.city-grid {
    background: var(--bg-dark);
    padding: 8px 0 60px;
}

.grid-inner {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.city-card {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    cursor: pointer;
    transition: all var(--transition);
    border: 1px solid var(--border-subtle);
}

.city-card:hover {
    transform: translateY(-6px);
    border-color: rgba(13,110,253,0.2);
    box-shadow: 0 12px 40px rgba(0,0,0,0.4);
}

.city-img {
    width: 100%;
    height: 160px;
    background-size: cover;
    background-position: center;
    position: relative;
}

.city-img::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(2,12,36,0.8) 0%, transparent 60%);
}

.city-name {
    position: absolute;
    bottom: 40px;
    left: 16px;
    font-size: 18px;
    font-weight: 700;
    color: var(--white);
    z-index: 2;
    letter-spacing: 1px;
}

.city-count {
    position: absolute;
    bottom: 16px;
    left: 16px;
    font-size: 13px;
    color: var(--text-secondary);
    z-index: 2;
}

.city-btn {
    display: block;
    text-align: center;
    padding: 10px 0;
    font-size: 13px;
    color: var(--tech-blue-light);
    background: rgba(255,255,255,0.02);
    border-top: 1px solid var(--border-subtle);
    transition: all var(--transition);
}

.city-card:hover .city-btn {
    background: rgba(13,110,253,0.08);
    color: var(--white);
}

/* ============================================================
   页脚
   ============================================================ */
.footer {
    background: #020816;
    border-top: 1px solid rgba(255,255,255,0.05);
    padding: 60px 0 0;
}

.footer-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 24px;
}

.footer-top {
    display: flex;
    justify-content: space-between;
    gap: 60px;
    padding-bottom: 36px;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.footer-brand { flex: 0 0 200px; }

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
}

.footer-logo span { font-size: 18px; font-weight: 700; color: var(--white); }

.footer-brand p { font-size: 13px; color: var(--text-muted); margin-bottom: 12px; }

.footer-tel { font-size: 15px; font-weight: 600; color: var(--text-secondary); }

.footer-links { display: flex; gap: 60px; }

.footer-col h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 14px;
}

.footer-col a {
    display: block;
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 8px;
    transition: color var(--transition);
}

.footer-col a:hover { color: var(--tech-blue-light); }

.footer-bottom {
    text-align: center;
    padding: 24px 0;
    font-size: 12px;
    color: var(--text-muted);
}

.footer-copy { margin-top: 6px; }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1024px) {
    .nav-links { gap: 18px; }
    .nav-links a { font-size: 13px; }
    .grid-inner { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .nav-actions a:not(.btn-register) { display: none; }
    .hero-title { font-size: 28px; }
    .search-inner { flex-direction: column; }
    .btn-my-group { width: 100%; justify-content: center; }
    .type-inner { flex-direction: column; }
    .type-card { height: 160px; }
    .grid-inner { grid-template-columns: 1fr; }
    .footer-top { flex-wrap: wrap; gap: 30px; }
    .footer-links { flex-wrap: wrap; gap: 24px; }
}