/* 许韶歆名校长工作室工作台 · 全局样式 */
:root {
  --primary: #1a5276;
  --primary-light: #2980b9;
  --accent: #27ae60;
  --danger: #c0392b;
  --warning: #f39c12;
  --bg: #f4f6f8;
  --card-bg: #fff;
  --text: #2c3e50;
  --text-muted: #7f8c8d;
  --border: #dce1e6;
  --radius: 10px;
  --shadow: 0 2px 8px rgba(0,0,0,0.08);
}
* { margin:0; padding:0; box-sizing:border-box; }
body { font-family: -apple-system,"PingFang SC","Microsoft YaHei","Helvetica Neue",sans-serif; background:var(--bg); color:var(--text); line-height:1.6; font-size:14px; }

/* 顶部栏 */
.topbar { background: var(--primary); color:#fff; padding:0 24px; height:60px; display:flex; align-items:center; box-shadow:0 2px 4px rgba(0,0,0,.15); position:sticky; top:0; z-index:100; }
.topbar-inner { width:100%; max-width:1400px; margin:0 auto; display:flex; justify-content:space-between; align-items:center; }
.brand { display:flex; align-items:center; gap:12px; text-decoration:none; color:#fff; }
.logo-img { height:40px; width:auto; }
.brand-text { font-size:16px; font-weight:600; letter-spacing:.5px; white-space:nowrap; }
.user-info { display:flex; align-items:center; gap:16px; font-size:13px; }
.user-badge { opacity:.85; }
.btn-logout { color:#fff; text-decoration:none; padding:4px 14px; border:1px solid rgba(255,255,255,.4); border-radius:6px; font-size:12px; transition:.2s; }
.btn-logout:hover { background:rgba(255,255,255,.15); }

/* 侧边导航 */
.sidenav { display:flex; gap:4px; padding:12px 24px; background:var(--card-bg); border-bottom:1px solid var(--border); overflow-x:auto; flex-wrap:wrap; }
.nav-item { display:inline-flex; align-items:center; gap:6px; padding:8px 18px; text-decoration:none; color:var(--text); border-radius:8px; font-size:14px; transition:.15s; white-space:nowrap; box-sizing:border-box; }
.nav-item:hover { background:#eaf0f7; }
.nav-item.active { background:var(--primary); color:#fff; font-weight:500; }

/* 快捷入口卡片 */
.card-nav { display:flex; flex-direction:column; align-items:flex-start; padding:20px; background:#fff; border:1px solid var(--border); border-radius:var(--radius); text-decoration:none; color:var(--text); box-shadow:var(--shadow); transition:.15s; min-height:110px; overflow:hidden; }
.card-nav:hover { border-color:var(--primary-light); box-shadow:0 4px 12px rgba(0,0,0,.12); transform:translateY(-2px); }
.card-nav > div:last-child { font-size:12px; color:var(--text-muted); line-height:1.4; word-break:break-word; overflow-wrap:break-word; }

/* 主内容区 */
.main-content { max-width:1400px; margin:20px auto; padding:0 24px; min-height:calc(100vh - 180px); }

/* 卡片 */
.card { background:var(--card-bg); border-radius:var(--radius); box-shadow:var(--shadow); padding:24px; margin-bottom:20px; }
.card-title { font-size:17px; font-weight:600; color:var(--primary); margin-bottom:16px; padding-bottom:10px; border-bottom:2px solid #eef2f7; }

/* 统计卡片网格 */
.stats-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(200px,1fr)); gap:16px; margin-bottom:24px; }
.stat-card { background:var(--card-bg); border-radius:var(--radius); box-shadow:var(--shadow); padding:20px; text-align:center; }
.stat-num { font-size:32px; font-weight:700; color:var(--primary); }
.stat-label { font-size:13px; color:var(--text-muted); margin-top:4px; }

/* 表格 */
table.data-table { width:100%; border-collapse:collapse; font-size:13px; }
table.data-table th { background:var(--primary); color:#fff; padding:10px 14px; text-align:left; font-weight:500; white-space:nowrap; }
table.data-table td { padding:10px 14px; border-bottom:1px solid var(--border); vertical-align:top; }
table.data-table tr:hover td { background:#fafbfc; }
table.data-table .tag { display:inline-block; padding:2px 10px; border-radius:12px; font-size:12px; font-weight:500; }
.tag-a { background:#d5f5e3; color:#1e8449; }
.tag-b { background:#fcf3cf; color:#9a7d0a; }
.tag-c { background:#fadbd8; color:#c0392b; }
.tag-done { background:#d5f5e3; color:#1e8449; }
.tag-pending { background:#fef9e7; color:#9a7d0a; }

/* 表单 */
.form-group { margin-bottom:16px; }
.form-group label { display:block; font-weight:500; margin-bottom:6px; font-size:13px; color:var(--text); }
.form-control { width:100%; padding:9px 14px; border:1px solid var(--border); border-radius:8px; font-size:14px; outline:none; transition:.2s; }
.form-control:focus { border-color:var(--primary-light); box-shadow:0 0 0 3px rgba(41,128,185,.12); }
textarea.form-control { resize:vertical; min-height:80px; }
select.form-control { appearance:auto; }

/* 按钮 */
.btn { display:inline-flex; align-items:center; gap:6px; padding:9px 22px; border:none; border-radius:8px; font-size:14px; cursor:pointer; text-decoration:none; transition:.15s; font-weight:500; }
.btn-primary { background:var(--primary); color:#fff; }
.btn-primary:hover { background:#154360; }
.btn-accent { background:var(--accent); color:#fff; }
.btn-accent:hover { background:#1e8449; }
.btn-sm { padding:6px 14px; font-size:12px; }
.btn-danger { background:var(--danger); color:#fff; }
.btn-danger:hover { background:#922b21; }

/* 登录页 */
.login-page { min-height:100vh; display:flex; align-items:center; justify-content:center; background:linear-gradient(135deg,#1a5276 0%,#2980b9 50%,#27ae60 100%); }
.login-box { background:#fff; border-radius:16px; box-shadow:0 20px 60px rgba(0,0,0,.25); padding:48px 40px; width:400px; max-width:90vw; text-align:center; }
.login-box img.logo-img { height:80px; margin-bottom:16px; }
.login-box h1 { font-size:20px; color:var(--primary); margin-bottom:24px; }
.login-box .form-group { text-align:left; }
.login-box .btn { width:100%; justify-content:center; padding:12px; font-size:15px; margin-top:8px; }
.login-error { background:#fadbd8; color:#c0392b; padding:10px 14px; border-radius:8px; font-size:13px; margin-bottom:16px; }

/* 页脚 */
.site-footer { text-align:center; padding:20px; color:var(--text-muted); font-size:12px; border-top:1px solid var(--border); margin-top:30px; }
.footer-sub { margin-top:4px; opacity:.7; }

/* 响应式 */
@media(max-width:768px) {
  .sidenav { padding:8px 12px; }
  .nav-item { padding:6px 12px; font-size:13px; }
  .main-content { padding:0 12px; }
  .stats-grid { grid-template-columns:repeat(2,1fr); }
  table.data-table { font-size:12px; }
  table.data-table th, table.data-table td { padding:7px 8px; }
}

/* 工具类 */
.text-center { text-align:center; }
.text-right { text-align:right; }
.mt-16 { margin-top:16px; }
.mb-16 { margin-bottom:16px; }
.flex-between { display:flex; justify-content:space-between; align-items:center; }
.gap-8 { gap:8px; }