/**
 * 全局样式 — 176复古传奇蓝白设计图风格
 * 配色由后台 stn_primary_color 等变量覆盖
 */

:root {
    /* ===== 设计图默认配色（蓝白） ===== */
    --stn-primary: #2563EB;
    --stn-secondary: #1D4ED8;
    --stn-button: #2563EB;
    --stn-bg: #F4F6F9;
    --stn-card-bg: #FFFFFF;
    --stn-text: #1E293B;
    --stn-text-light: #0F172A;
    --stn-text-muted: #64748B;
    --stn-text-dim: #94A3B8;
    --stn-border: #E2E8F0;
    --stn-border-light: #F1F5F9;
    --stn-shadow: 0 1px 2px rgba(0,0,0,0.04);
    --stn-shadow-md: 0 4px 12px rgba(0,0,0,0.06);
    --stn-shadow-lg: 0 8px 24px rgba(0,0,0,0.08);
    --stn-radius-sm: 8px;
    --stn-radius-md: 12px;
    --stn-radius-lg: 16px;
    --stn-transition: 0.2s ease;
    
    /* 兼容变量（模板使用） */
    --color-bg: var(--stn-bg);
    --color-surface: var(--stn-card-bg);
    --color-text: var(--stn-text);
    --color-text-em: var(--stn-text-light);
    --color-text-secondary: var(--stn-text);
    --color-text-muted: var(--stn-text-muted);
    --color-text-dim: var(--stn-text-dim);
    --color-primary: var(--stn-primary);
    --color-primary-light: var(--stn-secondary);
    --color-primary-soft: #DBEAFE;
    --color-primary-dark: var(--stn-secondary);
    --color-border: var(--stn-border);
    --color-border-light: var(--stn-border-light);
    --color-shadow: var(--stn-shadow);
    --color-shadow-md: var(--stn-shadow-md);
    --color-shadow-lg: var(--stn-shadow-lg);
    --radius-sm: var(--stn-radius-sm);
    --radius-md: var(--stn-radius-md);
    --radius-lg: var(--stn-radius-lg);
    --transition: var(--stn-transition);
    
    /* 设计图专用 */
    --font-body: 'Segoe UI', system-ui, -apple-system, sans-serif;
    --nav-height: 64px;
    --max-width: 1200px;
}

/* ===== 重置 ===== */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    background: var(--color-bg);
    color: var(--color-text);
    font: 16px/1.6 var(--font-body);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
    line-height: 1.2;
    color: var(--color-text-em);
}
h1 { font-size: clamp(28px, 3.5vw, 44px); font-weight: 700; letter-spacing: -0.02em; }
h2 { font-size: clamp(20px, 2.2vw, 24px); font-weight: 700; letter-spacing: -0.01em; }
h3 { font-size: 16px; font-weight: 600; }
h4 { font-size: 14px; font-weight: 600; }

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; height: auto; }

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}
@media (max-width: 768px) {
    .container { padding: 0 16px; }
}

/* ===== 通用组件 ===== */
.section {
    padding: 48px 0;
}
.section-alt {
    background: var(--color-bg);
}
.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
}
.section-header h2 {
    font-size: 24px;
    font-weight: 700;
    letter-spacing: -0.01em;
}
.section-header .more-link {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-muted);
    transition: color var(--transition);
}
.section-header .more-link:hover {
    color: var(--color-primary);
}
@media (max-width: 768px) {
    .section { padding: 32px 0; }
    .section-header h2 { font-size: 20px; }
}

/* ===== 面包屑 ===== */
.breadcrumb {
    font-size: 13px;
    color: var(--color-text-muted);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
}
.breadcrumb a {
    color: var(--color-text-muted);
    transition: color var(--transition);
}
.breadcrumb a:hover {
    color: var(--color-primary);
}
.breadcrumb .sep {
    color: var(--color-border);
}

/* ===== 导航栏（毛玻璃） ===== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    height: var(--nav-height);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px) saturate(160%);
    -webkit-backdrop-filter: blur(12px) saturate(160%);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--color-shadow);
}
.header-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    height: 100%;
    display: flex;
    align-items: center;
    padding: 0 24px;
    gap: 32px;
}

.site-logo {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: -0.01em;
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}
.site-logo svg {
    width: 28px;
    height: 28px;
    flex-shrink: 0;
}
.site-logo em {
    font-style: normal;
    color: var(--color-primary);
}

.main-nav {
    display: flex;
    gap: 4px;
    flex: 1;
}
.main-nav a {
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-muted);
    transition: all var(--transition);
    white-space: nowrap;
}
.main-nav a:hover,
.main-nav a.active {
    color: var(--color-primary);
    background: var(--color-primary-soft);
}
.main-nav a.active {
    font-weight: 600;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-left: auto;
}
.nav-right .search-box {
    position: relative;
    display: flex;
    align-items: center;
}
.nav-right .search-box input {
    width: 200px;
    padding: 8px 12px 8px 36px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: var(--color-text);
    background: var(--color-bg);
    outline: none;
    transition: all var(--transition);
}
.nav-right .search-box input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-soft);
}
.nav-right .search-box svg {
    position: absolute;
    left: 10px;
    width: 16px;
    height: 16px;
    color: var(--color-text-muted);
    pointer-events: none;
}

.hamburger {
    display: none;
    padding: 8px;
    align-items: center;
    background: transparent;
    border: none;
    cursor: pointer;
}
.hamburger svg {
    width: 24px;
    height: 24px;
    color: var(--color-text);
}

.mobile-overlay {
    display: none;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-surface);
    z-index: 99;
    padding: 16px;
    flex-direction: column;
    gap: 4px;
    border-top: 1px solid var(--color-border);
    box-shadow: var(--color-shadow-lg);
}
.mobile-overlay.open {
    display: flex;
}
.mobile-overlay a {
    padding: 14px 16px;
    border-radius: var(--radius-sm);
    font-size: 16px;
    font-weight: 500;
    color: var(--color-text);
    transition: all var(--transition);
}
.mobile-overlay a:hover,
.mobile-overlay a.active {
    background: var(--color-primary-soft);
    color: var(--color-primary);
}

@media (max-width: 860px) {
    .main-nav { display: none; }
    .nav-right .search-box { display: none; }
    .hamburger { display: flex; }
}

/* ===== 分页 ===== */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 6px;
    margin-top: 28px;
    padding-top: 24px;
    border-top: 1px solid var(--color-border-light);
}
.page-btn {
    min-width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-muted);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    transition: all var(--transition);
    cursor: pointer;
    font-family: var(--font-body);
}
.page-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}
.page-btn.active {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
    font-weight: 600;
}
.page-btn.prev-next {
    font-size: 13px;
    padding: 0 14px;
}

/* ===== 页脚 ===== */
.site-footer {
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    padding: 40px 0 32px;
    margin-top: 16px;
}
.footer-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 32px;
}
.footer-about h3 {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: -0.01em;
    margin-bottom: 8px;
}
.footer-about p {
    font-size: 14px;
    color: var(--color-text-muted);
    line-height: 1.6;
}
.footer-col h4 {
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 14px;
}
.footer-col a {
    display: block;
    padding: 4px 0;
    font-size: 14px;
    color: var(--color-text-muted);
    transition: color var(--transition);
}
.footer-col a:hover {
    color: var(--color-primary);
}
.footer-bottom {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 20px 24px 0;
    border-top: 1px solid var(--color-border-light);
    margin-top: 28px;
    text-align: center;
    font-size: 13px;
    color: var(--color-text-muted);
}
@media (max-width: 768px) {
    .footer-inner {
        grid-template-columns: 1fr;
        gap: 24px;
    }
}