:root {
  --bg: #f4f6fa;
  --panel: #ffffff;
  --border: #e4e8f0;
  --border-2: #eef1f6;
  --text: #1d2433;
  --text-2: #5b6577;
  --text-3: #8b95a7;
  --primary: #2f6bff;
  --primary-weak: #eaf0ff;
  --ok: #12a86a;
  --ok-weak: #e7f7ef;
  --warn: #e08c1a;
  --warn-weak: #fdf3e2;
  --danger: #e0483d;
  --danger-weak: #fdecea;
  --shadow: 0 1px 2px rgba(20, 30, 60, .05), 0 8px 24px rgba(20, 30, 60, .06);
  --shadow-lg: 0 12px 32px rgba(20, 30, 60, .12);
  --radius: 12px;
  --radius-lg: 18px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.55 "PingFang SC", "Microsoft YaHei", "Segoe UI", system-ui, -apple-system, sans-serif;
  -webkit-font-smoothing: antialiased;
}

/* 顶部柔和渐变，增强页面层次 */
body {
  background-image: linear-gradient(180deg, rgba(47, 107, 255, .06), rgba(47, 107, 255, 0) 300px);
  background-repeat: no-repeat;
  background-attachment: fixed;
}

/* ---------- 顶栏 ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 24px;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 12px rgba(20, 30, 60, .05);
}
.brand { display: flex; align-items: center; gap: 12px; }
.logo {
  width: 38px; height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, #2f6bff, #6a4bff);
  color: #fff; font-weight: 800; font-size: 15px;
  display: grid; place-items: center;
  letter-spacing: .5px;
}
.brand-text { display: flex; flex-direction: column; }
.brand-text strong { font-size: 16px; letter-spacing: .3px; }
.brand-text small { color: var(--text-3); font-size: 12px; }
.top-right { display: flex; align-items: center; gap: 10px; }

.conn {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 5px 12px; border-radius: 999px;
  font-size: 12px; font-weight: 600;
  background: var(--border-2); color: var(--text-2);
}
.conn i { width: 8px; height: 8px; border-radius: 50%; background: var(--text-3); }
.conn-on { background: var(--ok-weak); color: var(--ok); }
.conn-on i { background: var(--ok); box-shadow: 0 0 0 3px rgba(18,168,106,.15); }
.conn-off { background: var(--border-2); color: var(--text-2); }
.conn-err { background: var(--danger-weak); color: var(--danger); }
.conn-err i { background: var(--danger); }
.conn-load i { background: var(--warn); animation: blink 1s infinite; }
@keyframes blink { 50% { opacity: .25; } }

/* ---------- 按钮 ---------- */
.btn {
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text);
  padding: 7px 14px;
  border-radius: 8px;
  font-size: 13px;
  cursor: pointer;
  transition: .15s;
  font-family: inherit;
}
.btn:hover { border-color: #c9d2e3; background: #fafbfe; }
.btn:active { transform: translateY(1px); }
.btn:disabled,
.btn[disabled] {
  opacity: .55;
  cursor: not-allowed;
  background: #eef1f6;
  color: #a0aab8;
  border-color: #d5dde8;
  transform: none;
  box-shadow: none;
}
.btn-primary:disabled,
.btn-primary[disabled] {
  background: #c2c8d4;
  border-color: #c2c8d4;
  color: #fff;
}
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: #2559db; border-color: #2559db; }
.btn.sm { padding: 5px 10px; font-size: 12px; }
.btn.danger { color: var(--danger); border-color: #f3cfcb; }
.btn.danger:hover { background: var(--danger-weak); }
.btn b {
  display: inline-block; margin-left: 4px; padding: 0 6px;
  background: var(--primary-weak); color: var(--primary);
  border-radius: 999px; font-size: 11px;
}
/* 链接当按钮用（如「数据看板」）：继承按钮外观，避免被浏览器弹窗拦截 */
a.btn {
  display: inline-flex; align-items: center; justify-content: center;
  text-decoration: none; white-space: nowrap;
}
a.btn:hover { text-decoration: none; }

/* ---------- 布局 ---------- */
.wrap { max-width: 1460px; margin: 0 auto; padding: 22px 26px 52px; }

.toolbar {
  display: flex; flex-wrap: wrap; align-items: flex-end; gap: 16px 18px;
  background: linear-gradient(180deg, #ffffff, #fbfcff);
  border: 1px solid var(--border);
  border-radius: var(--radius); padding: 16px 18px; box-shadow: var(--shadow);
}
.field { display: flex; flex-direction: column; gap: 7px; min-width: 150px; }
.field.grow { flex: 1 1 280px; min-width: 220px; }
.field.grow-2 { flex: 1 1 210px; min-width: 180px; }
.field.btns { flex-direction: row; gap: 8px; align-items: center; }
.field label { font-size: 12px; color: var(--text-2); font-weight: 600; letter-spacing: .3px; }
.inline { display: flex; align-items: center; gap: 10px; }

select, input[type=text], input[type=number], input[type=password] {
  height: 36px; padding: 0 10px;
  border: 1px solid var(--border); border-radius: 8px;
  background: #fff; color: var(--text); font-size: 13px;
  font-family: inherit; outline: none; width: 100%;
}
select:focus, input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(47,107,255,.12); }
.field.btns select { width: 100px; }

.switch { position: relative; display: inline-block; width: 40px; height: 22px; flex: none; }
.switch input { opacity: 0; width: 0; height: 0; }
.switch span {
  position: absolute; inset: 0; cursor: pointer;
  background: #d3d9e6; border-radius: 999px; transition: .2s;
}
.switch span::before {
  content: ''; position: absolute; width: 18px; height: 18px;
  left: 2px; top: 2px; background: #fff; border-radius: 50%; transition: .2s;
}
.switch input:checked + span { background: var(--primary); }
.switch input:checked + span::before { transform: translateX(18px); }

/* ---------- 提示 ---------- */
.alert {
  margin-top: 14px; padding: 12px 16px; border-radius: 10px;
  background: var(--danger-weak); color: #a3342c; border: 1px solid #f5d3cf;
  font-size: 13px; white-space: pre-wrap;
}
.alert.info { background: var(--primary-weak); color: #1a45ad; border-color: #ccdaff; }
.hidden { display: none !important; }

/* ---------- 卡片 ---------- */
.cards {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 14px; margin-top: 16px;
}
.card {
  position: relative; overflow: hidden;
  background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 16px 18px; box-shadow: var(--shadow);
  display: flex; flex-direction: column; gap: 6px;
  transition: transform .18s ease, box-shadow .18s ease;
}
.card::before {
  content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 4px;
  background: var(--accent, var(--primary));
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.card span { font-size: 12px; color: var(--text-3); }
.card b { font-size: 25px; font-weight: 700; letter-spacing: .5px; white-space: nowrap; }
.card.ok b { color: var(--ok); }
.card.warn b { color: var(--warn); }
.card.accent-blue   { --accent: #2f6bff; }
.card.accent-green  { --accent: #12a86a; }
.card.accent-orange { --accent: #e08c1a; }
.card.accent-purple { --accent: #8b5cf6; }
.card.accent-teal   { --accent: #0ea5a4; }
.card.accent-red    { --accent: #e0483d; }
.card.accent-indigo { --accent: #4f6bed; }
.card.accent-gray   { --accent: #94a3b8; }

/* ---------- 面板 ---------- */
.panel {
  margin-top: 18px; background: var(--panel);
  border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); overflow: hidden;
}
/* 在 .layout 容器内由 gap 控制间距，去掉 panel 自身 margin-top */
.layout > .panel { margin-top: 0; }
.panel-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 13px 18px; border-bottom: 1px solid var(--border-2);
  background: linear-gradient(180deg, #ffffff, #fbfcfe);
}
.panel-head h2 {
  margin: 0; font-size: 15px; font-weight: 700;
  display: flex; align-items: center; gap: 9px;
}
.panel-head h2::before {
  content: ''; flex: none; width: 4px; height: 16px; border-radius: 3px;
  background: linear-gradient(180deg, var(--primary), #6a4bff);
}
.panel-head h2 small { font-weight: 500; color: var(--text-3); font-size: 12px; margin-left: 0; }
.updated { font-size: 12px; color: var(--text-3); display: flex; align-items: center; gap: 6px; }
.dot { width: 7px; height: 7px; border-radius: 50%; background: #cbd3e2; display: inline-block; }
.dot.on { background: var(--ok); animation: pulse 1.6s infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .25; } }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 900px) { .grid-2 { grid-template-columns: 1fr; } }

/* ---------- 三 panel 布局容器（默认 / 成绩明细与缺考名单同行） ---------- */
.layout {
  display: grid; gap: 18px;
  grid-template-columns: 1fr;
  margin-top: 18px;
}
.layout > #tablePanel    { grid-column: 1; grid-row: 1; }
.layout > #absentPanel   { grid-column: 1; grid-row: 2; }
.layout > #unmatchedPanel { grid-column: 1; grid-row: 3; }

/* side：成绩明细 与 缺考名单 同行，未匹配答卷放下面整宽 */
.layout[data-layout="side"] {
  grid-template-columns: 1fr 1fr;
}
.layout[data-layout="side"] > #tablePanel     { grid-column: 1; grid-row: 1; }
.layout[data-layout="side"] > #absentPanel    { grid-column: 2; grid-row: 1; }
.layout[data-layout="side"] > #unmatchedPanel { grid-column: 1 / -1; grid-row: 2; }

/* 窄屏一律回落单列（grid-row 也要还原） */
@media (max-width: 900px) {
  .layout, .layout[data-layout="side"] { grid-template-columns: 1fr; }
  .layout > #tablePanel, .layout > #absentPanel, .layout > #unmatchedPanel,
  .layout[data-layout="side"] > #tablePanel,
  .layout[data-layout="side"] > #absentPanel,
  .layout[data-layout="side"] > #unmatchedPanel {
    grid-column: 1;
  }
  .layout > #tablePanel, .layout[data-layout="side"] > #tablePanel    { grid-row: 1; }
  .layout > #absentPanel, .layout[data-layout="side"] > #absentPanel { grid-row: 2; }
  .layout > #unmatchedPanel, .layout[data-layout="side"] > #unmatchedPanel { grid-row: 3; }
}

/* ---------- 表格 ---------- */
.table-scroll { overflow: auto; max-height: 62vh; }
.table-scroll.short { max-height: 320px; }
.table-scroll.mid { max-height: 380px; }

table.grid { width: 100%; border-collapse: collapse; font-size: 13px; }
table.grid th {
  position: sticky; top: 0; z-index: 2;
  background: linear-gradient(180deg, #fbfcfe, #f4f7fc); color: var(--text-2);
  text-align: left; font-weight: 600; font-size: 12px;
  padding: 11px 14px; border-bottom: 1px solid var(--border);
  white-space: nowrap;
  box-shadow: inset 0 -1px 0 var(--border);
}
table.grid th.sortable { cursor: pointer; user-select: none; }
table.grid th.sortable:hover { color: var(--primary); }
table.grid th .arrow { color: var(--primary); margin-left: 3px; }
table.grid td { padding: 10px 14px; border-bottom: 1px solid var(--border-2); }
table.grid tbody tr:nth-child(even) td { background: #fbfcff; }
table.grid tbody tr:hover td { background: var(--primary-weak); }
table.grid.compact td, table.grid.compact th { padding: 7px 12px; }
td.empty { text-align: center; color: var(--text-3); padding: 32px 0; }
td.num { font-variant-numeric: tabular-nums; white-space: nowrap; }
td.sid { font-weight: 600; color: var(--text-2); font-variant-numeric: tabular-nums; }
td.name { font-weight: 600; }
td.score { font-weight: 700; font-variant-numeric: tabular-nums; }
.score-high { color: var(--ok); }
.score-mid { color: var(--warn); }
.score-low { color: var(--danger); }
.diff { animation: flash 1.6s ease-out; }
@keyframes flash { from { background: #fff6d9; } to { background: transparent; } }

/* 新增数据绿色底纹（每次刷新后标记，下一轮刷新前持续显示） */
table.grid tbody tr.new td { background: #e7f7ee; }
table.grid tbody tr.new:hover td { background: #d6f2e2; }

.tag {
  display: inline-block; padding: 1px 8px; border-radius: 999px;
  font-size: 11px; font-weight: 600;
}
.tag-ok { background: var(--ok-weak); color: var(--ok); }
.tag-warn { background: var(--warn-weak); color: var(--warn); }
.tag-gray { background: var(--border-2); color: var(--text-3); }
.tag-att { background: #e8eefc; color: #3457c9; cursor: pointer; }

/* 多次刷题：成员榜可点击行 */
tr.clickable { cursor: pointer; }
tr.clickable:hover td { background: var(--border-2); }
.muted { color: var(--text-3); }

/* ---------- 弹窗 ---------- */
.modal {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(20, 28, 48, .45);
  display: none; align-items: center; justify-content: center;
  padding: 24px; backdrop-filter: blur(2px);
}
.modal.open { display: flex; }
.modal-box {
  background: #fff; border-radius: 14px; width: 640px; max-width: 100%;
  max-height: 90vh; display: flex; flex-direction: column;
  box-shadow: 0 24px 64px rgba(15, 23, 42, .28);
}
.modal-box.wide { width: 820px; }
.modal-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 18px; border-bottom: 1px solid var(--border);
}
.modal-head h3 { margin: 0; font-size: 15px; }
.x { border: 0; background: none; font-size: 22px; line-height: 1; cursor: pointer; color: var(--text-3); }
.x:hover { color: var(--text); }
.modal-body { padding: 18px; overflow: auto; }
.modal-foot {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 18px; border-top: 1px solid var(--border); background: #fbfcfe;
  border-radius: 0 0 14px 14px;
}
.spacer { flex: 1; }

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.fi { display: flex; flex-direction: column; gap: 6px; }
.fi.full { grid-column: 1 / -1; }
.fi label { font-size: 12px; font-weight: 600; color: var(--text-2); }
.fi-inline { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; }
.fi-inline .chk { font-weight: 500; font-size: 13px; color: var(--text); }
.fullscores { display: flex; flex-direction: column; gap: 6px; }
.fullscores .row { display: flex; align-items: center; gap: 8px; }
.fullscores label { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.fullscores input { width: 90px; flex: none; }
.fullscores .empty { padding: 6px 0; color: var(--text-3); font-size: 12px; text-align: left; }
.hint { margin: 0; font-size: 11px; color: var(--text-3); }
.fi.checks { flex-direction: row; flex-wrap: wrap; gap: 18px; }
.fi.checks label { display: flex; align-items: center; gap: 6px; font-weight: 500; font-size: 13px; color: var(--text); }
.ping-result {
  margin-top: 14px; padding: 10px 12px; border-radius: 8px;
  font-size: 12px; white-space: pre-wrap;
  background: var(--ok-weak); color: #0d7a4d; border: 1px solid #c8ecda;
}
.ping-result.err { background: var(--danger-weak); color: #a3342c; border-color: #f5d3cf; }

/* ---------- 名单 ---------- */
.upload-zone {
  border: 2px dashed #cfd8ea; border-radius: 10px; padding: 22px;
  text-align: center; cursor: pointer; transition: .15s; background: #fbfcfe;
}
.upload-zone:hover, .upload-zone.over { border-color: var(--primary); background: var(--primary-weak); }
.uz-inner { display: flex; flex-direction: column; gap: 4px; }
.uz-inner strong { font-size: 13px; }
.uz-inner span { font-size: 12px; color: var(--text-3); }
.roster-bar {
  display: flex; align-items: center; gap: 10px; margin: 14px 0 10px; flex-wrap: wrap;
}
.roster-bar input[type=text] { width: 180px; }
.chk { display: inline-flex; align-items: center; gap: 5px; font-size: 12px; color: var(--text-2); }
#rosterBody input {
  width: 100%; border: 1px solid transparent; background: transparent;
  padding: 4px 6px; border-radius: 6px; font-size: 13px; font-family: inherit; color: var(--text);
}
#rosterBody input:focus { border-color: var(--primary); background: #fff; outline: none; }
.link-del { color: var(--danger); cursor: pointer; font-size: 12px; }

/* ---------- 登录门 ---------- */
.login-gate {
  position: fixed; inset: 0; z-index: 200;
  display: flex; align-items: center; justify-content: center;
  padding: 24px; background: linear-gradient(135deg, #1b2440, #2f6bff);
  overflow: hidden;
}
.login-gate::before,
.login-gate::after {
  content: ''; position: absolute; border-radius: 50%;
  background: rgba(255, 255, 255, .08); pointer-events: none;
}
.login-gate::before { width: 340px; height: 340px; top: -90px; right: -70px; }
.login-gate::after { width: 280px; height: 280px; bottom: -80px; left: -60px; background: rgba(255, 255, 255, .06); }
.login-gate.hidden { display: none; }
.login-box {
  position: relative; overflow: hidden;
  width: 420px; max-width: 100%;
  background: #fff; border-radius: var(--radius-lg); padding: 30px 28px 28px;
  box-shadow: 0 24px 64px rgba(15, 23, 42, .35);
}
.login-box::before {
  content: ''; position: absolute; left: 0; right: 0; top: 0; height: 4px;
  background: linear-gradient(90deg, #2f6bff, #6a4bff);
}
.login-brand { display: flex; align-items: center; gap: 12px; margin: 2px 0 8px; }
.login-brand .logo { width: 46px; height: 46px; border-radius: 13px; font-size: 18px; }
.login-tip { margin: 0 0 20px; font-size: 12px; color: var(--text-3); line-height: 1.6; }
.login-box .fi { margin-bottom: 14px; }
.login-actions { display: flex; gap: 10px; margin-top: 6px; }
.login-actions .btn { flex: 1; }
.login-msg { margin-top: 12px; font-size: 12px; min-height: 18px; white-space: pre-wrap; }
.login-msg.ok { color: var(--ok); }
.login-msg.err { color: var(--danger); }

/* ---------- 全屏适配 ---------- */
body.fs-on .wrap { max-width: none; padding-top: 8px; }
body.fs-on .table-scroll { max-height: calc(100vh - 230px); }
body.fs-on .table-scroll.short { max-height: 40vh; }
body.fs-on .cards { gap: 14px; }
body.fs-on .card b { font-size: 28px; }
body.fs-on .topbar { padding-top: 8px; padding-bottom: 8px; }

/* ---------- 三端自适应（桌面 / 平板 / 手机） ---------- */
@media (max-width: 1180px) {
  .wrap { padding: 16px 16px 40px; }
  .topbar { padding: 10px 16px; }
}

@media (max-width: 1024px) {
  .grid-2 { grid-template-columns: 1fr; }
  .field.grow, .field.grow-2 { flex: 1 1 100%; min-width: 0; }
}

@media (max-width: 768px) {
  body { font-size: 13px; }
  .topbar { flex-wrap: wrap; gap: 10px; }
  .brand-text small { display: none; }
  .top-right { flex-wrap: wrap; gap: 8px; }
  .top-right .btn { padding: 6px 10px; font-size: 12px; }
  .btn b { font-size: 10px; }
  .wrap { padding: 12px 12px 36px; }
  .toolbar { padding: 12px; gap: 10px; }
  .field { flex: 1 1 100%; min-width: 0; }
  .field.btns { flex: 1 1 100%; }
  .field.btns select { width: 100%; }
  .cards { grid-template-columns: repeat(3, 1fr); gap: 8px; }
  .card { padding: 10px 12px; }
  .card b { font-size: 20px; }
  .panel-head { flex-direction: column; align-items: flex-start; gap: 6px; }
  .table-scroll { max-height: 56vh; }
  table.grid { font-size: 12px; }
  table.grid th { padding: 8px 10px; white-space: nowrap; }
  table.grid td { padding: 7px 10px; }
  .modal { padding: 10px; }
  .modal-box, .modal-box.wide { width: 100%; max-height: 92vh; }
  .form-grid { grid-template-columns: 1fr; }
  .modal-body { padding: 14px; }
  .roster-bar .chk { font-size: 11px; }
}

@media (max-width: 480px) {
  .cards { grid-template-columns: repeat(2, 1fr); }
  .brand-text strong { font-size: 14px; }
  .topbar .logo { width: 32px; height: 32px; font-size: 13px; }
  .btn { padding: 6px 9px; font-size: 12px; }
  .field label { font-size: 11px; }
  .roster-bar { gap: 8px; }
  .roster-bar input[type=text] { width: 120px; }
  .panel-head h2 { font-size: 14px; }
  #rosterBody input { font-size: 12px; }
}

/* ---------- 数据看板 ---------- */
.dash-hero {
  background: linear-gradient(135deg, #1b2440, #2f6bff);
  color: #fff; padding: 20px 24px; border-radius: var(--radius-lg);
  display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  box-shadow: var(--shadow);
}
.dash-hero .brand strong { color: #fff; font-size: 17px; }
.dash-hero .brand small { color: rgba(255, 255, 255, .72); }
.dash-hero a.back { color: #fff; opacity: .9; font-size: 13px; text-decoration: none; font-weight: 600; }
.dash-hero a.back:hover { opacity: 1; text-decoration: underline; }
.dash-controls { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.dash-controls select { width: 230px; height: 38px; }
.dash-controls .inline { color: #fff; }
.dash-controls .btn { background: rgba(255, 255, 255, .14); border-color: transparent; color: #fff; }
.dash-controls .btn:hover { background: rgba(255, 255, 255, .24); }

.sec-title { margin: 22px 0 4px; font-size: 15px; font-weight: 700; display: flex; align-items: center; gap: 8px; }
.sec-title .tag-gray { background: var(--border-2); color: var(--text-3); padding: 1px 9px; border-radius: 999px; font-size: 12px; font-weight: 600; }

.class-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 16px; margin-top: 14px; }
.class-card {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px 18px; box-shadow: var(--shadow); transition: transform .18s, box-shadow .18s;
}
.class-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.class-card h3 { margin: 0 0 2px; font-size: 16px; display: flex; justify-content: space-between; align-items: baseline; gap: 8px; }
.class-card .rate-num { font-size: 15px; font-weight: 800; white-space: nowrap; }
.class-card .sub { font-size: 12px; color: var(--text-3); margin-bottom: 12px; }
.bar { height: 9px; border-radius: 999px; background: var(--border-2); overflow: hidden; }
.bar > i { display: block; height: 100%; border-radius: 999px; transition: width .5s ease; }
.class-metrics { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 16px; margin-top: 14px; }
.class-metrics .m { display: flex; flex-direction: column; gap: 2px; }
.class-metrics .m span { color: var(--text-3); font-size: 11px; }
.class-metrics .m b { font-size: 17px; font-weight: 700; }
.metric-ok b { color: var(--ok); }
.metric-warn b { color: var(--warn); }
.metric-danger b { color: var(--danger); }

.empty { text-align: center; color: var(--text-3); padding: 40px 0; }

/* 班级卡片：可点击进入该班详情 */
.class-card.clickable { cursor: pointer; }
.class-card.clickable:hover { border-color: var(--primary); }
.grp-tag {
  display: inline-block; margin-top: 12px; padding: 2px 10px; border-radius: 999px;
  font-size: 11px; font-weight: 600; color: var(--primary); background: var(--primary-weak);
}

/* 班级详情头部 */
.detail-head { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; margin-top: 18px; }
.detail-head h2 { margin: 0; font-size: 18px; font-weight: 700; }

/* 分组对比：A 在左、B 在右 */
.group-compare { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 14px; }
@media (max-width: 860px) { .group-compare { grid-template-columns: 1fr; } }
.gpanel {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px 18px; box-shadow: var(--shadow);
}
.gpanel .ghead { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 2px; }
.gpanel .ghead strong { font-size: 16px; }
.gpanel .ghead .rate-num { font-size: 15px; font-weight: 800; }

/* 成员榜：排名 / 姓名 / 成绩 */
.mem-title {
  margin-top: 16px; margin-bottom: 8px;
  font-size: 12px; font-weight: 700; color: var(--text-2);
}
.member-list {
  max-height: 300px; overflow: auto;
  border: 1px solid var(--border-2); border-radius: 10px; background: #fff;
}
.member-list table.grid { font-size: 12.5px; }
.member-list table.grid th { padding: 8px 10px; }
.member-list table.grid td { padding: 6px 10px; }
.rk {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 22px; height: 22px; padding: 0 6px; border-radius: 999px;
  background: var(--border-2); color: var(--text-2);
  font-size: 12px; font-weight: 700; font-variant-numeric: tabular-nums;
}
.rk-1 { background: #fff2d6; color: #b7791f; }
.rk-2 { background: #eef1f6; color: #64748b; }
.rk-3 { background: #fbe9dd; color: #b45309; }

/* 防溢出：网格子项允许收缩，长内容不撑破页面 */
.class-grid, .group-compare, .cards, .gpanel, .class-card { min-width: 0; }
.gpanel, .class-card { overflow: hidden; }
.member-list td.name { max-width: 140px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* 看板全屏：整页不溢出屏幕（外层锁 100vh + overflow:hidden，内部区域自行滚动） */
body.dash.fs-on .wrap {
  height: 100vh; display: flex; flex-direction: column; overflow: hidden;
  max-width: none; padding: 12px 20px 14px;
}
body.dash.fs-on .dash-hero { padding: 12px 18px; flex: 0 0 auto; border-radius: var(--radius); }
body.dash.fs-on .sec-title { margin: 12px 0 4px; font-size: 14px; }
body.dash.fs-on .cards { gap: 10px; margin-top: 10px; }
body.dash.fs-on .card { padding: 10px 12px; }
body.dash.fs-on .card b { font-size: 20px; }
body.dash.fs-on #overview, body.dash.fs-on #detail {
  flex: 1 1 auto; min-height: 0; overflow: auto;
}
body.dash.fs-on .class-grid { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 12px; }
body.dash.fs-on .group-compare { gap: 12px; }
body.dash.fs-on .gpanel { padding: 12px 14px; }
body.dash.fs-on .member-list { max-height: 30vh; }


/* ================= 随机抽取页 ================= */
.panel-head .actions { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }

/* 抽取人数输入框：在 toolbar 内联按钮组中收窄 */
.field .inline input[type=number] { width: 78px; flex: none; }

.draw-stage {
  margin: 18px; padding: 26px 18px;
  border: 1px dashed var(--border); border-radius: var(--radius);
  background: linear-gradient(180deg, #fbfcff, #f6f8ff);
  text-align: center; font-size: 20px; font-weight: 700;
  color: var(--text-3); letter-spacing: 1px;
  min-height: 86px; display: flex; align-items: center; justify-content: center;
  transition: color .2s ease, background .2s ease;
}
.draw-stage.rolling {
  color: var(--primary);
  background: linear-gradient(180deg, #f2f6ff, #eaf0ff);
  animation: drawShake .12s infinite alternate;
}
.draw-stage.done {
  color: var(--ok);
  background: linear-gradient(180deg, #f2fbf5, #e9f7ee);
  font-size: 26px;
}
@keyframes drawShake {
  from { transform: translateY(-1px) scale(.995); }
  to   { transform: translateY(1px)  scale(1.005); }
}
@media (prefers-reduced-motion: reduce) {
  .draw-stage.rolling { animation: none; }
}

/* ================= side 布局：两 panel 等高（缺考名单不再留大片空白） ================= */
/* 宽屏 side 模式：panel 变纵向 flex，表格区撑满剩余高度（行高由内容多的一侧决定） */
@media (min-width: 901px) {
  .layout[data-layout="side"] > #tablePanel,
  .layout[data-layout="side"] > #absentPanel {
    display: flex; flex-direction: column;
  }
  .layout[data-layout="side"] > #tablePanel .table-scroll,
  .layout[data-layout="side"] > #absentPanel .table-scroll {
    flex: 1 1 auto; min-height: 0; max-height: none;
  }
}

/* ================= 随机抽取：历史记录 ================= */
.log-list { display: flex; flex-direction: column; gap: 10px; }
.log-item {
  border: 1px solid var(--border-2); border-radius: 10px;
  background: #fbfcff; overflow: hidden;
}
.log-head {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  padding: 10px 14px; flex-wrap: wrap;
}
.log-summary { font-size: 13px; font-weight: 600; color: var(--text); }
.log-summary small { color: var(--text-3); font-weight: 500; }
.log-actions { display: flex; gap: 8px; flex: none; }
.log-detail summary {
  cursor: pointer; user-select: none; padding: 7px 14px;
  font-size: 12px; color: var(--primary); border-top: 1px dashed var(--border-2);
  list-style: none;
}
.log-detail summary::-webkit-details-marker { display: none; }
.log-detail summary::before { content: '▸ '; }
.log-detail[open] summary::before { content: '▾ '; }
.log-detail[open] summary { border-bottom: 1px solid var(--border-2); }
.log-detail .table-scroll { max-height: 260px; border-radius: 0; }