/**
 * Wanbay UI — 清爽冷灰底 · 海蓝主色 · 天空蓝点缀
 * 适合大中小学生：简约大气、扁平细线、无紫渐变 / 无大阴影
 */
:root {
  /* 清爽冷灰纸面，避免发黄发闷 */
  --wb-bg: #f3f6fa;
  --wb-bg-soft: #e8eef6;
  --wb-surface: #ffffff;
  /* 海蓝主色：稳重但不沉闷 */
  --wb-ink: #1a4b7c;
  --wb-ink-soft: #2a5f94;
  --wb-ink-muted: #5a7394;
  /* 点缀用清亮天蓝（变量名保留 gold 以兼容旧引用） */
  --wb-gold: #2f7dd1;
  --wb-gold-soft: #5b9be0;
  --wb-gold-wash: rgba(47, 125, 209, 0.10);
  --wb-line: #dde5ef;
  --wb-line-strong: #c5d0de;
  --wb-muted: #64748b;
  --wb-text: #1e293b;
  --wb-danger: #c4352b;
  --wb-ok: #0d7a56;
  --wb-radius: 10px;
  --wb-radius-sm: 8px;
  --wb-font: "Segoe UI", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --wb-brand-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", Georgia, serif;
  --wb-topbar-h: 56px;
  --wb-drawer-w: 268px;
  --wb-pad-x: 40px;
  --wb-pad-y: 28px;
  --wb-shadow-gold: 0 1px 0 rgba(26, 75, 124, 0.06);
  --wb-lift: 0 6px 16px rgba(26, 75, 124, 0.08);

  --primary: var(--wb-ink);
  --bg: var(--wb-bg);
  --border: var(--wb-line);
  --muted: var(--wb-muted);
  --text: var(--wb-text);
  --card: var(--wb-surface);
}

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

html, body {
  margin: 0;
  padding: 0;
  font-family: var(--wb-font);
  font-size: 14px;
  line-height: 1.5;
  color: var(--wb-text);
  background: var(--wb-bg);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--wb-ink); text-decoration: none; }
a:hover { color: var(--wb-gold); }

/* —— App shell —— */
.wb-app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--wb-bg);
}

.wb-topbar {
  height: var(--wb-topbar-h);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 20px;
  background: var(--wb-surface);
  border-bottom: 1px solid var(--wb-line);
  box-shadow: var(--wb-shadow-gold);
  position: sticky;
  top: 0;
  z-index: 100;
}

.wb-topbar__menu {
  width: 34px;
  height: 34px;
  border: 1px solid var(--wb-line);
  border-radius: var(--wb-radius-sm);
  background: var(--wb-surface);
  color: var(--wb-ink);
  cursor: pointer;
  font-size: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.wb-topbar__menu:hover { border-color: var(--wb-gold); color: var(--wb-gold); }

.wb-brand {
  font-family: var(--wb-brand-serif);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--wb-ink);
  white-space: nowrap;
}
.wb-brand span { color: var(--wb-gold); }

.wb-crumb {
  font-size: 13px;
  color: var(--wb-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.wb-crumb b { color: var(--wb-ink-soft); font-weight: 600; }

.wb-topnav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin: 0 auto;
  flex-wrap: wrap;
  justify-content: center;
}
.wb-topnav a {
  font-size: 14px;
  color: var(--wb-ink-muted);
  padding: 7px 14px;
  border-radius: 999px;
  border: 1px solid transparent;
}
.wb-topnav a:hover {
  color: var(--wb-ink);
  background: var(--wb-bg-soft);
}
.wb-topnav a.active {
  color: #fff;
  background: var(--wb-ink);
  border-color: var(--wb-ink);
  font-weight: 650;
}

.wb-topbar__tools {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.wb-user-pill {
  font-size: 13px;
  color: var(--wb-ink-soft);
  background: var(--wb-bg);
  border: 1px solid var(--wb-line);
  border-radius: var(--wb-radius-sm);
  padding: 5px 10px;
}

.wb-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  padding: 7px 14px;
  border-radius: var(--wb-radius-sm);
  border: 1px solid var(--wb-line);
  background: var(--wb-surface);
  color: var(--wb-ink);
  cursor: pointer;
}
.wb-btn:hover { border-color: var(--wb-gold); color: var(--wb-ink); }
.wb-btn--primary {
  background: var(--wb-ink);
  border-color: var(--wb-ink);
  color: #fff;
}
.wb-btn--primary:hover { background: var(--wb-ink-soft); border-color: var(--wb-ink-soft); color: #fff; }
.wb-btn--ghost { background: transparent; }
.wb-btn--danger {
  background: #fff;
  border-color: #f0c4c0;
  color: var(--wb-danger);
}
.wb-btn--danger:hover { background: #fff5f5; }

/* Drawer */
.wb-drawer-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(27, 42, 74, 0.28);
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  transition: opacity .18s ease;
}
.wb-drawer-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.wb-drawer {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--wb-drawer-w);
  height: 100vh;
  background: var(--wb-surface);
  border-right: 1px solid var(--wb-line);
  z-index: 210;
  transform: translateX(-100%);
  transition: transform .2s ease;
  display: flex;
  flex-direction: column;
}
.wb-drawer.open { transform: translateX(0); }

.wb-drawer__head {
  height: var(--wb-topbar-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  border-bottom: 1px solid var(--wb-line);
}
.wb-drawer__nav {
  flex: 1;
  overflow-y: auto;
  padding: 12px 10px 24px;
}
.wb-drawer__nav a,
.wb-drawer__nav .wb-nav-item {
  display: block;
  font-size: 13px;
  color: var(--wb-ink-muted);
  padding: 10px 12px;
  border-radius: var(--wb-radius-sm);
  border: 1px solid transparent;
  margin-bottom: 2px;
  cursor: pointer;
  text-decoration: none;
  background: transparent;
  width: 100%;
  text-align: left;
}
.wb-drawer__nav a:hover,
.wb-drawer__nav .wb-nav-item:hover {
  background: var(--wb-bg);
  color: var(--wb-ink);
  border-color: var(--wb-line);
}
.wb-drawer__nav a.active,
.wb-drawer__nav .wb-nav-item.active {
  background: var(--wb-gold-wash);
  color: var(--wb-ink);
  border-color: var(--wb-gold-soft);
  font-weight: 600;
}
.wb-drawer__foot {
  border-top: 1px solid var(--wb-line);
  padding: 10px;
}

.wb-main {
  flex: 1;
  min-width: 0;
  padding: var(--wb-pad-y) var(--wb-pad-x) 48px;
}

@media (max-width: 900px) {
  :root { --wb-pad-x: 16px; --wb-pad-y: 18px; }
  .wb-topnav { display: none; }
  .wb-crumb { display: none; }
}

/* —— Cards / list skeleton —— */
.wb-card {
  background: var(--wb-surface);
  border: 1px solid var(--wb-line);
  border-radius: var(--wb-radius);
  box-shadow: none;
}

.wb-page-head {
  margin-bottom: 18px;
}
.wb-page-head h1 {
  margin: 0 0 6px;
  font-size: 20px;
  font-weight: 700;
  color: var(--wb-ink);
  letter-spacing: 0.01em;
}
.wb-page-head .wb-sub {
  margin: 0;
  font-size: 13px;
  color: var(--wb-muted);
  line-height: 1.55;
  max-width: 720px;
}

.wb-page-hero {
  background: var(--wb-surface);
  border: 1px solid var(--wb-line);
  border-radius: var(--wb-radius);
  padding: 16px 20px;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.wb-page-hero h1 {
  margin: 0 0 4px;
  font-size: 18px;
  color: var(--wb-ink);
}
.wb-page-hero .wb-sub { margin: 0; font-size: 13px; color: var(--wb-muted); }
.wb-kpi-row { display: flex; gap: 16px; flex-wrap: wrap; }
.wb-kpi {
  min-width: 88px;
  text-align: right;
}
.wb-kpi b {
  display: block;
  font-size: 20px;
  color: var(--wb-ink);
  font-weight: 700;
  line-height: 1.2;
}
.wb-kpi span {
  font-size: 12px;
  color: var(--wb-muted);
}

.wb-search-card {
  background: var(--wb-surface);
  border: 1px solid var(--wb-line);
  border-radius: var(--wb-radius);
  padding: 14px 16px;
  margin-bottom: 14px;
}

.wb-table-card {
  background: var(--wb-surface);
  border: 1px solid var(--wb-line);
  border-radius: var(--wb-radius);
  overflow: hidden;
}
.wb-table-card__toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  padding: 12px 16px;
  border-bottom: 1px solid var(--wb-line);
  background: #f7fafc;
}
.wb-table-card__body { padding: 0; overflow-x: auto; }
.wb-table-card table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.wb-table-card th,
.wb-table-card td {
  padding: 11px 14px;
  border-bottom: 1px solid var(--wb-line);
  text-align: left;
  vertical-align: middle;
}
.wb-table-card th {
  font-size: 12px;
  font-weight: 650;
  color: var(--wb-muted);
  background: #f7fafc;
}
.wb-table-card tr:last-child td { border-bottom: none; }
.wb-table-card__pager {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  padding: 10px 16px;
  border-top: 1px solid var(--wb-line);
  font-size: 13px;
  color: var(--wb-muted);
}

/* —— Portal module cards（紧凑：少空白、字号更大） —— */
.wb-greet {
  margin: 0 0 18px;
}
.wb-greet h1 {
  margin: 0 0 6px;
  font-size: 24px;
  font-weight: 750;
  color: var(--wb-ink);
  letter-spacing: 0.01em;
}
.wb-greet p {
  margin: 0;
  font-size: 15px;
  color: var(--wb-muted);
  line-height: 1.55;
}

.wb-section {
  margin-bottom: 22px;
}
.wb-section__title {
  margin: 0 0 12px;
  font-size: 15px;
  font-weight: 700;
  color: var(--wb-ink);
  letter-spacing: 0.02em;
  display: flex;
  align-items: center;
  gap: 10px;
  text-transform: none;
}
.wb-section__title::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--wb-line);
}

.wb-mod-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 12px;
}
@media (max-width: 520px) {
  .wb-mod-grid { grid-template-columns: 1fr; }
}

.wb-mod-card {
  background: var(--wb-surface);
  border: 1px solid var(--wb-line);
  border-radius: var(--wb-radius);
  padding: 14px 14px 12px;
  cursor: pointer;
  text-align: left;
  transition: border-color .15s ease, transform .15s ease, box-shadow .15s ease, background .15s ease;
  min-height: 0;
  display: grid;
  grid-template-columns: 48px 1fr;
  grid-template-rows: auto auto;
  column-gap: 12px;
  row-gap: 4px;
  align-items: start;
  position: relative;
  box-shadow: none;
}
.wb-mod-card:hover {
  border-color: var(--wb-gold-soft);
  background: #fbfdff;
  transform: translateY(-2px);
  box-shadow: var(--wb-lift);
}
.wb-mod-card__icon {
  grid-row: 1 / span 2;
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: linear-gradient(180deg, #f0f6fc, #e8f1fa);
  border: 1px solid var(--wb-line);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin: 0;
  color: var(--wb-ink);
}
.wb-mod-card h3 {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  color: var(--wb-text);
  line-height: 1.3;
  align-self: end;
}
.wb-mod-card p {
  margin: 0;
  font-size: 14px;
  color: var(--wb-muted);
  line-height: 1.45;
}
.wb-mod-card__action {
  grid-column: 1 / -1;
  margin-top: 8px;
  width: 100%;
  background: var(--wb-ink);
  color: #fff;
  border: 1px solid var(--wb-ink);
  padding: 8px 10px;
  border-radius: var(--wb-radius-sm);
  cursor: pointer;
  font-size: 13px;
  font-weight: 650;
}
.wb-mod-card__action:hover { background: var(--wb-ink-soft); }
.wb-mod-card__badge {
  position: absolute;
  top: 8px;
  right: 8px;
  background: var(--wb-danger);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  min-width: 22px;
  height: 22px;
  line-height: 22px;
  padding: 0 6px;
  border-radius: 999px;
  text-align: center;
  display: none;
}
.wb-mod-card__badge.show { display: inline-block; }
.wb-mod-card .tag-soon {
  grid-column: 2;
  justify-self: start;
  margin-top: 2px;
}

/* Form bits used by many pages */
.wb-field {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  font-size: 13px;
}
.wb-field label { font-weight: 650; color: var(--wb-ink-soft); }
.wb-field select,
.wb-field input[type="text"],
.wb-field input[type="number"] {
  font: inherit;
  font-size: 13px;
  padding: 7px 10px;
  border: 1px solid var(--wb-line);
  border-radius: var(--wb-radius-sm);
  background: #fff;
  color: var(--wb-text);
  min-width: 200px;
}
.wb-field select:focus,
.wb-field input:focus {
  outline: none;
  border-color: var(--wb-gold-soft);
}

.wb-tag {
  display: inline-block;
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 4px;
  border: 1px solid var(--wb-line);
  background: var(--wb-bg);
  color: var(--wb-ink-muted);
}

/* Standalone wrap pages (listening etc.) */
.wb-wrap {
  width: 100%;
  max-width: none;
  margin: 0;
  padding: var(--wb-pad-y) var(--wb-pad-x) 56px;
  box-sizing: border-box;
}
.wb-back {
  color: var(--wb-ink);
  font-weight: 650;
  font-size: 13px;
  text-decoration: none;
}
.wb-back:hover { color: var(--wb-gold); }