/**
 * 全局样式 — 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（会被后台覆盖） ===== */
    --stn-primary: #C73B2B;
    --stn-secondary: #A82E1F;
    --stn-button: #C73B2B;
    --stn-bg: #F6F5F1;
    --stn-card-bg: #FFFFFF;
    --stn-text: #1C1B1A;
    --stn-text-light: #3A3835;
    --stn-text-muted: #7A7670;
    --stn-border: #E6E4E0;
    --stn-border-light: #EFEDE9;
    --stn-shadow: none;
    --stn-radius: 8px;
    --stn-radius-btn: 6px;
    --stn-transition: 200ms ease;
    
    /* 兼容变量 */
    --color-bg: var(--stn-bg);
    --color-surface: var(--stn-card-bg);
    --color-text: var(--stn-text);
    --color-text-secondary: var(--stn-text-light);
    --color-text-muted: var(--stn-text-muted);
    --color-primary: var(--stn-primary);
    --color-primary-light: var(--stn-secondary);
    --color-primary-soft: #FAEAE6;
    --color-border: var(--stn-border);
    --color-border-light: var(--stn-border-light);
    --color-shadow: var(--stn-shadow);
    --radius-card: var(--stn-radius);
    --radius-btn: var(--stn-radius-btn);
    --transition: var(--stn-transition);
    
    /* 设计图专用 */
    --sans: 'Noto Sans SC', 'Source Han Sans SC', 'PingFang SC', system-ui, -apple-system, sans-serif;
    --mono: 'JetBrains Mono', 'Noto Sans Mono', ui-monospace, monospace;
    --nav-height: 52px;
}

/* ===== 重置 ===== */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    background: var(--color-bg);
    color: var(--color-text);
    font-family: var(--sans);
    font-size: 15px;
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; height: auto; }

.wrap {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 28px;
}

/* ===== 导航栏（毛玻璃） ===== */
.nav {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(246, 245, 241, 0.85);
    backdrop-filter: saturate(140%) blur(12px);
    -webkit-backdrop-filter: saturate(140%) blur(12px);
    border-bottom: 1px solid var(--color-border);
}

.nav-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--nav-height);
}

.nav .brand {
    font-size: 17px;
    font-weight: 700;
    color: var(--color-primary);
    text-decoration: none;
    letter-spacing: -0.01em;
    flex-shrink: 0;
}

.nav .brand em {
    font-style: normal;
    color: var(--color-text-muted);
    font-weight: 400;
    font-size: 13px;
}

.nav-links {
    display: flex;
    gap: 2px;
    align-items: center;
    flex: 1;
    justify-content: center;
}

.nav-links a {
    color: var(--color-text-muted);
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    padding: 6px 12px;
    border-radius: 6px;
    transition: background var(--transition), color var(--transition);
    white-space: nowrap;
}

.nav-links a:hover {
    background: var(--color-primary-soft);
    color: var(--color-primary);
}

.nav-links a.active {
    color: var(--color-primary);
    background: var(--color-primary-soft);
}

.nav-actions {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-shrink: 0;
}

.nav-search {
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    cursor: pointer;
    transition: border-color var(--transition);
}

.nav-search:hover {
    border-color: var(--color-primary);
}

.nav-search svg {
    width: 13px;
    height: 13px;
    stroke: var(--color-text-muted);
    stroke-width: 1.8;
    fill: none;
    stroke-linecap: round;
    stroke-linejoin: round;
}

/* ===== 汉堡菜单 ===== */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: var(--transition);
}

.hamburger.open span:nth-child(1) {
    transform: rotate(45deg) translate(4px, 4px);
}
.hamburger.open span:nth-child(2) {
    opacity: 0;
}
.hamburger.open span:nth-child(3) {
    transform: rotate(-45deg) translate(4px, -4px);
}

/* ===== 面包屑 ===== */
.breadcrumb {
    padding: 20px 0 0;
    font-size: 12.5px;
    color: var(--color-text-muted);
}

.breadcrumb a {
    color: var(--color-text-muted);
    text-decoration: none;
}
.breadcrumb a:hover { color: var(--color-primary); }
.breadcrumb .sep { margin: 0 4px; }

/* ===== 页脚 ===== */
.footer {
    border-top: 1px solid var(--color-border);
    padding: 28px 0;
    font-size: 12px;
    color: var(--color-text-muted);
    margin-top: 8px;
}

.footer .row {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
}
.footer .row + .row { margin-top: 4px; }

.footer a {
    color: var(--color-text-muted);
    text-decoration: none;
}
.footer a:hover { color: var(--color-primary); }

.footer .f-brand {
    color: var(--color-primary);
    font-weight: 600;
}

/* ===== 通用分页 ===== */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 20px 0 40px;
}

.page-btn {
    min-width: 34px;
    height: 34px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    background: var(--color-surface);
    color: var(--color-text-muted);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
    font-family: var(--sans);
}

.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);
}
.page-btn:disabled {
    opacity: 0.4;
    cursor: default;
}
.page-btn:disabled:hover {
    border-color: var(--color-border);
    color: var(--color-text-muted);
}
.page-btn.prev,
.page-btn.next {
    padding: 0 12px;
    gap: 4px;
    font-size: 12px;
}

/* ===== 响应式 ===== */
@media (max-width: 900px) {
    .nav-links {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        width: 100%;
        background: rgba(246, 245, 241, 0.98);
        backdrop-filter: saturate(140%) blur(12px);
        flex-direction: column;
        padding: 12px 28px 20px;
        gap: 2px;
        border-bottom: 1px solid var(--color-border);
        transform: translateY(-120%);
        transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1);
        box-shadow: 0 20px 40px rgba(0,0,0,0.06);
        align-items: stretch;
        z-index: 999;
    }
    .nav-links.open {
        transform: translateY(0);
    }
    .nav-links a {
        padding: 10px 14px;
        font-size: 14px;
        border-radius: 4px;
        text-align: center;
    }
    .hamburger {
        display: flex;
    }
}

@media (max-width: 640px) {
    .wrap { padding: 0 16px; }
    .nav-inner { padding: 0 16px; }
    .nav .brand { font-size: 15px; }
    .nav .brand em { font-size: 11px; }
}