/* 
  文件名称：css/base.css
  功能描述：全局基础样式 - 包含 CSS 变量定义、浏览器内容重置、通用导航栏 (NAV) 与滚动公告 (TICKER)
  设计规范：色彩体系 (--primary, --accent)、字体规范 (--font-main, --font-mono)
*/
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700&display=swap');

:root {
    --primary: #1a3a5c;
    --primary-dark: #0f2540;
    --primary-light: #2a5080;
    --accent: #c8962e;
    --accent-light: #dba940;
    --bg: #eef2f7;
    --card-bg: #ffffff;
    --text: #1e2d3d;
    --text-muted: #6b7f93;
    --border: #cdd8e3;
    --danger: #c0392b;
    --danger-light: #f8d7da;
    --success: #1e7e4a;
    --success-light: #d4edda;
    --warning: #856404;
    --warning-light: #fff3cd;
    --font-main: 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
    --font-mono: 'Courier New', 'Consolas', monospace;
    --radius: 6px;
    --shadow-sm: 0 1px 4px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 3px 12px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 6px 24px rgba(0, 0, 0, 0.15);
    --transition: all 0.2s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    background: var(--bg);
    color: var(--text);
    font-size: 14px;
    line-height: 1.7;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--accent);
    text-decoration: underline;
}

img {
    max-width: 100%;
    display: block;
}

/* NAV */
.campus-nav {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
    color: white;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
}

.campus-nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    padding: 0 24px;
    height: 60px;
}

.campus-nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    color: white;
    text-decoration: none;
    flex-shrink: 0;
}

.campus-nav-logo img {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    border: 2px solid var(--accent);
}

.campus-nav-logo .school-name {
    font-size: 17px;
    font-weight: 700;
    letter-spacing: 2px;
    color: white;
}

.campus-nav-logo .school-sub {
    font-size: 11px;
    color: rgba(255, 255, 255, 0.6);
    letter-spacing: 1px;
}

.campus-nav-links {
    display: flex;
    align-items: center;
    gap: 2px;
    margin-left: 28px;
    flex: 1;
}

.campus-nav-links a {
    color: rgba(255, 255, 255, 0.85);
    padding: 7px 14px;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
    white-space: nowrap;
}

.campus-nav-links a:hover,
.campus-nav-links a.active {
    background: rgba(255, 255, 255, 0.15);
    color: white;
    text-decoration: none;
}

.campus-nav-links a.active {
    border-bottom: 2px solid var(--accent);
}

.campus-nav-user {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.75);
    white-space: nowrap;
}

.campus-nav-user .username {
    background: rgba(200, 150, 46, 0.25);
    border: 1px solid rgba(200, 150, 46, 0.5);
    color: var(--accent-light);
    padding: 3px 10px;
    border-radius: 20px;
    font-weight: 500;
}

.campus-nav-user .logout-btn {
    background: none;
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: rgba(255, 255, 255, 0.7);
    padding: 3px 10px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 12px;
    transition: var(--transition);
    font-family: var(--font-main);
}

.campus-nav-user .logout-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: white;
}

/* TICKER */
.campus-ticker {
    background: var(--accent);
    padding: 7px 0;
    overflow: hidden;
}

.campus-ticker-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.campus-ticker-label {
    background: var(--primary-dark);
    color: var(--accent-light);
    padding: 2px 10px;
    border-radius: 3px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 1px;
    white-space: nowrap;
    flex-shrink: 0;
}

.campus-ticker-track {
    overflow: hidden;
    flex: 1;
}

.campus-ticker-content {
    display: inline-block;
    white-space: nowrap;
    animation: ticker-scroll 30s linear infinite;
    color: var(--primary-dark);
    font-size: 13px;
    font-weight: 500;
}

.campus-ticker-content span {
    margin-right: 60px;
}

.campus-ticker-content span::before {
    content: '◆ ';
    opacity: 0.6;
}

@keyframes ticker-scroll {
    0% {
        transform: translateX(100vw);
    }

    100% {
        transform: translateX(-100%);
    }
}

/* ── 全局隐藏工具类 ── */
.hidden {
    display: none !important;
}