/* 校园币管理系统 · 管理端样式（桌面优先，响应式兼容） */
:root {
  --primary:#3b7ddd; --primary-dark:#2c62b0; --success:#22a06b; --danger:#e54d42;
  --warn:#e8a33d; --bg:#f2f5fa; --card:#fff; --text:#1f2733; --text-sub:#6b7684;
  --border:#e6eaf0; --sidebar:#1e2a3d; --radius:12px;
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;font-size:14px;line-height:1.55}
.layout{display:flex;min-height:100vh}

/* 侧边栏 */
.sidebar{width:216px;background:var(--sidebar);color:#c3cbd8;flex-shrink:0;display:flex;flex-direction:column;position:sticky;top:0;height:100vh}
.logo{padding:20px 18px;border-bottom:1px solid rgba(255,255,255,.07)}
.logo h1{margin:0;font-size:16px;color:#fff;font-weight:600}
.logo p{margin:3px 0 0;font-size:11px;opacity:.55}
.nav{flex:1;overflow-y:auto;padding:10px 0}
.nav a{display:flex;align-items:center;gap:10px;padding:10px 18px;color:#c3cbd8;text-decoration:none;font-size:13.5px;border-left:3px solid transparent;cursor:pointer}
.nav a:hover{background:rgba(255,255,255,.05);color:#fff}
.nav a.active{background:rgba(59,125,221,.18);color:#fff;border-left-color:var(--primary)}
.nav .grp{padding:14px 18px 6px;font-size:11px;text-transform:uppercase;opacity:.4;letter-spacing:.5px}
.sidebar-foot{padding:14px 18px;border-top:1px solid rgba(255,255,255,.07);font-size:12px}

/* 主区 */
.main{flex:1;min-width:0;display:flex;flex-direction:column}
.topbar{background:#fff;border-bottom:1px solid var(--border);padding:0 24px;height:58px;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:50}
.topbar h2{margin:0;font-size:17px;font-weight:600}
.topbar .right{display:flex;align-items:center;gap:14px;font-size:13px;color:var(--text-sub)}
/* V16 学校切换器 */
.school-switch{display:flex;align-items:center;gap:6px;background:#eef3fb;border:1px solid #d8e4f5;border-radius:9px;padding:4px 8px}
.school-switch .lb{font-size:12px;color:#5a6b85}
.school-select{border:none;background:transparent;font-size:13px;font-weight:600;color:#2c62b8;outline:none;cursor:pointer;padding:2px 2px;max-width:180px}
.school-locked{display:inline-flex;align-items:center;gap:4px;background:#f1f4f8;border:1px solid var(--border);border-radius:9px;padding:4px 10px;font-size:12px;color:#5a6b85}
.content{padding:20px 24px;flex:1}

/* 卡片 */
.card{background:var(--card);border-radius:var(--radius);padding:18px;box-shadow:0 1px 4px rgba(30,45,70,.06);margin-bottom:16px}
.card-title{margin:0 0 16px;font-size:15px;font-weight:600;display:flex;align-items:center;justify-content:space-between;gap:12px}

/* KPI */
.kpi-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px;margin-bottom:16px}
.kpi{background:#fff;border-radius:var(--radius);padding:16px 18px;box-shadow:0 1px 4px rgba(30,45,70,.06);border-left:3px solid var(--primary)}
.kpi.green{border-left-color:var(--success)}
.kpi.orange{border-left-color:var(--warn)}
.kpi.red{border-left-color:var(--danger)}
.kpi .l{font-size:12.5px;color:var(--text-sub)}
.kpi .v{font-size:26px;font-weight:700;margin:5px 0 0;letter-spacing:-.5px}
.kpi .v small{font-size:13px;font-weight:500;color:var(--text-sub);margin-left:3px}
.kpi .s{font-size:11.5px;color:#9aa4b2;margin-top:2px}

/* 表格 */
table{width:100%;border-collapse:collapse;font-size:13.5px}
th{ text-align:left;padding:10px 12px;background:#f7f9fc;color:var(--text-sub);font-weight:600;font-size:12.5px;white-space:nowrap;border-bottom:1px solid var(--border)}
td{padding:11px 12px;border-bottom:1px solid #f0f3f7}
tbody tr:hover{background:#fafbfd}
.table-wrap{overflow-x:auto;margin:0 -18px;padding:0 18px}
.num{text-align:right;font-variant-numeric:tabular-nums}
.bold{font-weight:600}

/* 按钮与输入 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:5px;border:0;border-radius:8px;padding:8px 15px;font-size:13.5px;background:var(--primary);color:#fff;cursor:pointer;font-family:inherit;white-space:nowrap}
.btn:hover{background:var(--primary-dark)}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btn.ghost{background:#eef3fb;color:var(--primary)}
.btn.ghost:hover{background:#e2ebfa}
.btn.success{background:var(--success)}
.btn.danger{background:var(--danger)}
.btn.sm{padding:5px 11px;font-size:12.5px;border-radius:6px}
.btn.link{background:transparent;color:var(--primary);padding:4px 6px}
.btn.link:hover{text-decoration:underline;background:transparent}
input,select,textarea{border:1px solid var(--border);border-radius:8px;padding:8px 11px;font-size:13.5px;font-family:inherit;background:#fbfcfe;color:var(--text)}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--primary);background:#fff}
.field{margin-bottom:14px}
.field label{display:block;font-size:12.5px;color:var(--text-sub);margin-bottom:5px;font-weight:500}
.field input,.field select,.field textarea{width:100%}
.filters{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-bottom:16px}
.filters input,.filters select{min-width:130px}

.badge{display:inline-block;padding:2px 8px;border-radius:5px;font-size:11.5px;background:#eef3fb;color:var(--primary);font-weight:500;white-space:nowrap}
.badge.gray{background:#f0f2f5;color:#7a8699}
.badge.green{background:#e6f6ee;color:var(--success)}
.badge.orange{background:#fdf3e4;color:var(--warn)}
.badge.red{background:#fdeceb;color:var(--danger)}

.toolbar{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:14px;flex-wrap:wrap}
.pager{display:flex;gap:8px;justify-content:flex-end;align-items:center;margin-top:14px;font-size:13px;color:var(--text-sub)}
.empty{text-align:center;padding:50px 20px;color:#9aa4b2}
.empty .i{font-size:38px;display:block;margin-bottom:8px;opacity:.45}

.chart{width:100%;height:290px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media(max-width:1100px){.grid2,.grid3{grid-template-columns:1fr}}

.progress{height:8px;background:#eef1f5;border-radius:4px;overflow:hidden;margin-top:8px}
.progress .bar{height:100%;background:linear-gradient(90deg,#3b7ddd,#6aa9ff);border-radius:4px}
.progress .bar.warn{background:linear-gradient(90deg,#e8a33d,#f5c169)}
.progress .bar.danger{background:linear-gradient(90deg,#e54d42,#f58b82)}

/* 弹窗 */
.modal{position:fixed;inset:0;background:rgba(15,23,36,.45);display:flex;align-items:center;justify-content:center;z-index:1000;padding:20px}
.modal .box{background:#fff;border-radius:14px;padding:24px;width:100%;max-width:560px;max-height:88vh;overflow-y:auto;box-shadow:0 20px 60px rgba(0,0,0,.22)}
.modal .box.wide{max-width:860px}
.modal h3{margin:0 0 18px;font-size:17px}
.modal-foot{display:flex;justify-content:flex-end;gap:10px;margin-top:20px;padding-top:16px;border-top:1px solid var(--border)}

.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(150deg,#1e2a3d,#2c3e5c)}
.login-card{background:#fff;border-radius:16px;padding:36px 32px;width:100%;max-width:400px;box-shadow:0 24px 70px rgba(0,0,0,.3)}
.login-card .logo-i{font-size:44px;text-align:center}
.login-card h2{margin:10px 0 4px;font-size:20px;text-align:center}
.login-card .sub{text-align:center;color:var(--text-sub);font-size:13px;margin-bottom:24px}
.quick{display:flex;gap:6px;flex-wrap:wrap;margin-top:16px;padding-top:14px;border-top:1px dashed var(--border)}
.quick button{border:1px solid var(--border);background:#fbfcfe;padding:5px 10px;border-radius:6px;font-size:12px;color:var(--text-sub);cursor:pointer}
.tabs{display:flex;gap:4px;border-bottom:1px solid var(--border);margin-bottom:18px;overflow-x:auto}
.tabs .t{padding:9px 16px;font-size:13.5px;color:var(--text-sub);cursor:pointer;border-bottom:2px solid transparent;white-space:nowrap}
.tabs .t.active{color:var(--primary);border-bottom-color:var(--primary);font-weight:600}
.alert{padding:12px 16px;border-radius:9px;font-size:13px;margin-bottom:16px;line-height:1.7}
.alert.warn{background:#fdf3e4;color:#8a5d12;border-left:3px solid var(--warn)}
.alert.danger{background:#fdeceb;color:#8a2f28;border-left:3px solid var(--danger)}
.alert.info{background:#eef3fb;color:#2c62b0;border-left:3px solid var(--primary)}
.alert.ok{background:#e6f6ee;color:#146b47;border-left:3px solid var(--success)}

/* ===== V17 排行榜：学生个人名次视角 ===== */
.badge.blue{background:#e8eefe;color:var(--primary)}
.rank-filters{align-items:center}
.rank-filters .lb{font-size:13px;color:var(--text-sub)}

/* 我的名次卡片 */
.my-rank-card{
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  background:linear-gradient(112deg,#1e5eff,#4b83ff 62%,#6f9dff);
  color:#fff;border:none;
}
.my-rank-card .my-rank-left{display:flex;align-items:center;gap:16px}
.my-rank-card .my-rank-name{font-size:19px;font-weight:700;display:flex;align-items:center;gap:8px}
.my-rank-card .my-rank-name .badge{background:rgba(255,255,255,.22);color:#fff}
.my-rank-card .my-rank-sub{font-size:12.5px;opacity:.9;margin-top:5px}
.my-rank-card .my-rank-right{text-align:right}
.my-rank-card .my-rank-no{font-size:42px;font-weight:800;line-height:1;letter-spacing:-1px}
.my-rank-card .my-rank-no .u{font-size:17px;font-weight:500;opacity:.75;margin-left:4px}
.my-rank-card .my-rank-tip{font-size:12.5px;opacity:.9;margin-top:6px}
.my-rank-card .my-rank-tip b{font-size:14px}

/* 头像 */
.avatar.lg,.mini-avatar{
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:50%;overflow:hidden;color:#fff;flex-shrink:0;font-weight:700;
}
.avatar.lg{width:54px;height:54px;font-size:22px;background:rgba(255,255,255,.22)!important}
.avatar.lg img{width:100%;height:100%;object-fit:cover}
.mini-avatar{width:26px;height:26px;font-size:12px;vertical-align:middle;margin-right:7px}
.mini-avatar img{width:100%;height:100%;object-fit:cover}

/* 前三名领奖台 */
.podium{display:flex;align-items:flex-end;justify-content:center;gap:22px;padding:22px 0 16px}
.podium .pod{display:flex;flex-direction:column;align-items:center;width:150px}
.podium .crown{font-size:26px;margin-bottom:-4px}
.podium .pod-name{margin-top:9px;font-size:14px;font-weight:600;max-width:146px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.podium .pod-score{font-size:15px;font-weight:800;color:var(--primary);margin-top:3px}
.podium .pod-base{width:100%;text-align:center;color:#fff;font-size:15px;font-weight:800;border-radius:8px 8px 0 0;padding:7px 0;margin-top:8px}
.podium .b1{height:58px;background:linear-gradient(180deg,#f59e0b,#f97316)}
.podium .b2{height:42px;background:linear-gradient(180deg,#94a3b8,#64748b)}
.podium .b3{height:33px;background:linear-gradient(180deg,#d97706,#b45309)}
.podium .avatar{width:48px;height:48px;font-size:20px;border-radius:50%;overflow:hidden;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700}
.podium .p1 .avatar{width:58px;height:58px;font-size:24px}
.podium .avatar img{width:100%;height:100%;object-fit:cover}

/* 榜单行高亮自己 */
table tbody tr.row-me{background:#f0f5ff}
table tbody tr.row-me td{font-weight:600}