:root {
  --bg: #f1f5f9;
  --card: #ffffff;
  --ink: #0f172a;
  --muted: #64748b;
  --line: #e2e8f0;
  --line-soft: #eef2f7;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --shadow: 0 2px 10px rgba(15, 23, 42, .06);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 14px;
  line-height: 1.55;
}

h1, h2, h3, p { margin: 0; }

button, input, select { font-family: inherit; font-size: 14px; }

/* 顶部栏 */
.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(255, 255, 255, .96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.topbar-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-logo {
  width: 42px; height: 42px; border-radius: 12px;
  background: linear-gradient(135deg, #2563eb, #0ea5e9);
  color: #fff; font-weight: 800; font-size: 17px; letter-spacing: .5px;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 12px rgba(37, 99, 235, .25);
}
.brand-logo-img {
  width: 44px; height: 44px; border-radius: 12px; object-fit: contain;
  background: #fff; border: 1px solid var(--line); padding: 3px;
  box-shadow: 0 3px 10px rgba(15, 23, 42, .10); image-rendering: auto;
}
.brand h1 { font-size: 18px; font-weight: 700; letter-spacing: .2px; }
.brand p { font-size: 12px; color: var(--muted); margin-top: 2px; }
.top-actions { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
a.btn { text-decoration: none; display: inline-flex; align-items: center; }
.cloud-badge {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 12.5px; color: #92400e; background: #fef3c7;
  border: 1px solid #fde68a; border-radius: 999px; padding: 5px 13px; white-space: nowrap;
}
.cloud-badge.ok { color: #065f46; background: #d1fae5; border-color: #a7f3d0; }

/* 提交卡 */
.submit-card { border-color: #bfdbfe; background: linear-gradient(180deg, #f8fbff, #fff); }
.submit-bar { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.submit-bar h2 { font-size: 16px; font-weight: 700; margin-bottom: 3px; }
.btn.big { padding: 11px 22px; font-size: 15px; border-radius: 11px; }

/* 后台登录 */
.login-card { max-width: 420px; margin: 40px auto; }
.login-card h2 { font-size: 18px; font-weight: 700; margin-bottom: 6px; }
.login-form { display: flex; gap: 10px; margin-top: 16px; }
.login-form input[type="password"] {
  flex: 1; border: 1px solid var(--line); border-radius: 9px; padding: 9px 12px; outline: none;
}
.login-form input[type="password"]:focus { border-color: #93c5fd; box-shadow: 0 0 0 3px rgba(59,130,246,.12); }
.admin-top { border-top: 3px solid var(--primary); }
.time-cell { color: var(--muted); font-size: 11.5px; }
.muted { color: #cbd5e1; }

/* 学员明细 */
#adminDetailCard { margin-top: 4px; }
.detail-cat { border: 1px solid var(--line); border-radius: 10px; margin-bottom: 8px; overflow: hidden; }
.detail-cat > summary {
  list-style: none; cursor: pointer; padding: 9px 13px; font-weight: 700; font-size: 13.5px;
  background: #f8fafc; display: flex; align-items: center; gap: 8px;
}
.detail-cat > summary::-webkit-details-marker { display: none; }
.detail-cat > summary::before { content: '▶'; font-size: 10px; color: var(--muted); transition: transform .2s; }
.detail-cat[open] > summary::before { transform: rotate(90deg); }
.detail-cat .cat-zh { color: var(--muted); font-weight: 400; font-size: 12px; }
.detail-cat .dc-count { margin-left: auto; font-size: 12px; color: var(--muted); font-weight: 400; }
.detail-body { padding: 4px 12px 8px; }
.detail-row {
  display: grid; grid-template-columns: 30px 26px minmax(200px, 1fr) 78px minmax(120px, 220px);
  gap: 10px; align-items: center; padding: 6px; border-bottom: 1px dashed var(--line-soft);
}
.detail-row:last-child { border-bottom: 0; }
.detail-level {
  --c: #94a3b8; justify-self: start; font-size: 11.5px; font-weight: 600;
  color: var(--c); background: color-mix(in srgb, var(--c) 14%, #fff);
  border: 1px solid color-mix(in srgb, var(--c) 35%, #fff);
  border-radius: 999px; padding: 2px 10px;
}
.detail-note { font-size: 12px; color: #475569; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

@media (max-width: 640px) {
  .detail-row { grid-template-columns: 24px 22px 1fr; }
  .detail-row .detail-level, .detail-row .detail-note { grid-column: 1 / -1; }
  .login-form { flex-direction: column; }
}

.wrap { max-width: 1280px; margin: 0 auto; padding: 20px 20px 40px; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: var(--shadow);
  padding: 18px 20px 20px;
  margin-bottom: 18px;
}
.card-head {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 12px; flex-wrap: wrap; margin-bottom: 14px;
  border-bottom: 1px solid var(--line-soft); padding-bottom: 10px;
}
.card-head h2 { font-size: 16px; font-weight: 700; display: flex; align-items: center; gap: 9px; }
.step {
  width: 22px; height: 22px; border-radius: 7px; background: #dbeafe; color: var(--primary-dark);
  font-size: 12px; display: inline-flex; align-items: center; justify-content: center; font-weight: 800;
}
.hint { color: var(--muted); font-size: 12.5px; }
.msg { color: var(--primary-dark); font-size: 12.5px; }

/* 按钮 / 表单控件 */
.btn {
  border: 1px solid var(--line);
  background: #fff;
  color: #334155;
  padding: 7px 13px;
  border-radius: 9px;
  cursor: pointer;
  transition: background .15s, border-color .15s, transform .1s, box-shadow .15s;
  white-space: nowrap;
}
.btn:hover { background: #f8fafc; border-color: #cbd5e1; }
.btn:active { transform: translateY(1px); }
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; font-weight: 600; }
.btn.primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); }
.btn.danger { color: #dc2626; border-color: #fecaca; }
.btn.danger:hover { background: #fef2f2; }
input[type="text"], input[type="search"], select, .note-input {
  border: 1px solid var(--line);
  border-radius: 9px;
  padding: 8px 11px;
  background: #fff;
  color: var(--ink);
  outline: none;
  transition: border-color .15s, box-shadow .15s;
}
input[type="text"]:focus, input[type="search"]:focus, select:focus, .note-input:focus {
  border-color: #93c5fd;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, .12);
}

/* 学员 */
.student-form { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.student-form input[type="text"] { width: 290px; max-width: 100%; }
.chips { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 14px; min-height: 32px; align-items: center; }
.chip {
  display: inline-flex; align-items: center; gap: 8px;
  border: 1px solid var(--line); border-radius: 999px;
  padding: 5px 8px 5px 14px; background: #f8fafc; cursor: pointer;
  font-size: 13px; transition: all .15s;
}
.chip:hover { border-color: #93c5fd; }
.chip.active { background: var(--primary); border-color: var(--primary); color: #fff; font-weight: 600; }
.chip .chip-del {
  width: 18px; height: 18px; line-height: 16px; text-align: center;
  border-radius: 50%; font-size: 13px; opacity: .6;
}
.chip .chip-del:hover { opacity: 1; background: rgba(0,0,0,.12); }
.chip.active .chip-del:hover { background: rgba(255,255,255,.25); }
.chips .chips-empty { color: var(--muted); font-size: 13px; }

/* KPI */
.kpi-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 16px; }
.kpi {
  border: 1px solid var(--line); border-radius: 12px; padding: 13px 15px;
  background: linear-gradient(180deg, #fff, #f8fbff);
}
.kpi .kpi-label { font-size: 12px; color: var(--muted); }
.kpi .kpi-value { font-size: 27px; font-weight: 800; letter-spacing: -.5px; margin-top: 2px; }
.kpi .kpi-value small { font-size: 13px; font-weight: 600; color: var(--muted); margin-left: 3px; }
.kpi .kpi-sub { font-size: 11.5px; color: var(--muted); margin-top: 2px; }

.stats-grid { display: grid; grid-template-columns: 1fr 1.25fr; gap: 16px; }
.stat-box { border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; background: #fff; }
.stat-box h3 { font-size: 13.5px; font-weight: 700; margin-bottom: 10px; }
.stat-box h3 small { font-weight: 400; color: var(--muted); font-size: 11.5px; }
.stat-note { font-size: 12px; color: var(--muted); margin-top: 10px; }

.stack-bar {
  display: flex; height: 17px; border-radius: 999px; overflow: hidden;
  background: #e9eef5; border: 1px solid #e2e8f0;
}
.stack-bar span { display: block; height: 100%; transition: width .3s ease; }
.legend { display: flex; flex-wrap: wrap; gap: 8px 16px; margin-top: 12px; }
.legend-item { font-size: 12px; color: #475569; display: inline-flex; align-items: center; gap: 6px; }
.legend-dot { width: 10px; height: 10px; border-radius: 3px; display: inline-block; }

.cat-stat-row {
  display: grid; grid-template-columns: minmax(150px, 210px) 1fr 96px;
  gap: 10px; align-items: center; margin-bottom: 7px;
}
.cat-stat-row .cs-name { font-size: 12px; color: #334155; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.cat-stat-row .cs-name b { color: var(--muted); font-weight: 500; }
.cat-stat-row .cs-val { font-size: 11.5px; color: var(--muted); text-align: right; }
.cat-stat-row .stack-bar { height: 12px; }

.compare { margin-top: 16px; }
.table-scroll { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 12.5px; }
th, td { padding: 8px 10px; border-bottom: 1px solid var(--line-soft); text-align: center; white-space: nowrap; }
th { color: var(--muted); font-weight: 600; background: #f8fafc; font-size: 11.5px; }
th:first-child, td:first-child { text-align: left; }
tbody tr { cursor: pointer; transition: background .12s; }
tbody tr:hover { background: #f1f5f9; }
tbody tr.active { background: #eff6ff; }
tbody tr.active td:first-child { font-weight: 700; color: var(--primary-dark); }
.rate-cell { font-weight: 700; }

/* 工具栏 */
.toolbar { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-bottom: 14px; }
.toolbar input[type="search"] { width: 260px; max-width: 100%; }
.toolbar select { padding: 8px 10px; }
.toolbar .hint { margin-left: 2px; }
.empty-tip {
  background: #fffbeb; border: 1px solid #fde68a; color: #92400e;
  border-radius: 10px; padding: 10px 14px; margin-bottom: 12px; font-size: 13px;
}

/* 分类折叠 */
.category { margin-bottom: 10px; border: 1px solid var(--line); border-radius: 11px; overflow: hidden; background: #fff; }
.cat-head {
  width: 100%; display: flex; align-items: center; gap: 12px;
  padding: 10px 14px; border: 0; cursor: pointer; text-align: left;
  background: linear-gradient(90deg, #f8fafc, #fff); color: var(--ink);
}
.cat-head:hover { background: #f1f5f9; }
.cat-head .chev {
  width: 18px; height: 18px; flex: 0 0 18px; color: var(--muted);
  transition: transform .25s ease; font-size: 12px; text-align: center;
}
.category.open .cat-head .chev { transform: rotate(90deg); }
.cat-title { font-weight: 700; font-size: 14px; }
.cat-title .cat-zh { font-weight: 400; color: var(--muted); font-size: 12px; margin-left: 7px; }
.cat-count {
  background: #e2e8f0; color: #475569; border-radius: 999px;
  font-size: 11.5px; padding: 1px 9px; white-space: nowrap;
}
.cat-mini { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.cat-mini .mini-bar { width: 130px; height: 8px; border-radius: 999px; overflow: hidden; display: flex; background: #e9eef5; }
.cat-mini .mini-bar span { display: block; height: 100%; }
.cat-mini .mini-text { font-size: 11.5px; color: var(--muted); white-space: nowrap; min-width: 92px; text-align: right; }

.cat-body {
  display: grid; grid-template-rows: 0fr;
  transition: grid-template-rows .28s ease;
}
.category.open .cat-body { grid-template-rows: 1fr; }
.cat-body-inner { overflow: hidden; }
.cat-body-inner > .cat-content { border-top: 1px solid var(--line-soft); padding: 4px 12px 8px; }

/* 工具行 */
.tool-row {
  display: grid;
  grid-template-columns: 30px 26px minmax(230px, 1fr) 254px minmax(150px, 230px);
  gap: 10px; align-items: center;
  padding: 7px 6px; border-bottom: 1px dashed var(--line-soft);
  border-radius: 6px;
}
.tool-row:last-child { border-bottom: 0; }
.tool-row:hover { background: #f8fafc; }
.tool-row[hidden] { display: none; }
.row-idx { color: #94a3b8; font-size: 11.5px; text-align: center; font-variant-numeric: tabular-nums; }
.tool-icon {
  width: 22px; height: 21px; object-fit: contain; display: block;
  image-rendering: auto; background: #fff; border-radius: 3px;
}
.row-info { min-width: 0; }
.row-name {
  font-family: Consolas, "SFMono-Regular", "Courier New", monospace;
  font-size: 13px; font-weight: 700; color: #1e293b; word-break: break-all;
}
.row-fn { font-size: 11.5px; color: var(--muted); margin-top: 1px; }
.row-levels { display: flex; gap: 4px; flex-wrap: wrap; }
.level-btn {
  --c: #94a3b8;
  border: 1px solid var(--line); background: #fff; color: #64748b;
  border-radius: 999px; padding: 3px 9px; font-size: 11.5px; cursor: pointer;
  transition: background .12s, color .12s, border-color .12s, transform .1s;
  white-space: nowrap;
}
.level-btn:hover { border-color: var(--c); color: var(--c); }
.level-btn.active { background: var(--c); border-color: var(--c); color: #fff; font-weight: 600; }
.level-btn:disabled { opacity: .45; cursor: not-allowed; }
.note-input { width: 100%; font-size: 12px; padding: 5px 9px; }
.note-input::placeholder { color: #b6c2d1; }
.note-input:disabled { background: #f8fafc; }

/* 页脚 / 提示 */
footer { text-align: center; color: var(--muted); font-size: 12px; margin-top: 22px; line-height: 1.8; }
.toast {
  position: fixed; left: 50%; bottom: 28px; transform: translate(-50%, 16px);
  background: #0f172a; color: #fff; padding: 9px 18px; border-radius: 999px;
  font-size: 13px; opacity: 0; pointer-events: none; transition: opacity .2s, transform .2s;
  z-index: 50; box-shadow: 0 8px 24px rgba(15,23,42,.25);
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ===================== 教学评价弹窗 ===================== */
.modal-mask {
  position: fixed; inset: 0; z-index: 900;
  background: rgba(15, 23, 42, .5);
  display: flex; align-items: center; justify-content: center;
  padding: 20px; backdrop-filter: blur(2px);
  animation: maskIn .18s ease both;
}
@keyframes maskIn { from { opacity: 0; } to { opacity: 1; } }
.modal {
  width: 100%; max-width: 560px; max-height: 90vh; overflow: auto;
  background: #fff; border-radius: 16px; box-shadow: 0 20px 60px rgba(15,23,42,.28);
  animation: modalIn .22s cubic-bezier(.2,.8,.25,1) both;
  display: flex; flex-direction: column;
}
@keyframes modalIn { from { opacity: 0; transform: translateY(16px) scale(.98); } to { opacity: 1; transform: none; } }
.modal-head {
  display: flex; align-items: flex-start; justify-content: space-between; gap: 12px;
  padding: 20px 22px 12px; border-bottom: 1px solid var(--line-soft);
}
.modal-head h2 { font-size: 17px; font-weight: 700; margin: 0 0 5px; }
.modal-head .hint { margin: 0; line-height: 1.5; }
.modal-x {
  border: 0; background: transparent; font-size: 26px; line-height: 1; color: #94a3b8;
  cursor: pointer; padding: 0 4px; border-radius: 8px; transition: .15s;
}
.modal-x:hover { color: #475569; background: #f1f5f9; }
.modal-body { padding: 16px 22px 6px; }
.eval-block { margin-bottom: 16px; }
.eval-label { font-size: 13px; font-weight: 600; color: #334155; margin-bottom: 9px; }
.eval-label .req { color: #dc2626; }

.star-row { display: flex; align-items: center; gap: 4px; }
.star {
  font-size: 30px; line-height: 1; color: #e2e8f0; cursor: pointer;
  transition: color .12s, transform .12s; user-select: none;
}
.star:hover { transform: scale(1.12); }
.star.on { color: #f59e0b; }
.star-text { margin-left: 10px; font-size: 13px; color: var(--muted); }

.aspect-list { display: grid; gap: 10px; }
.aspect-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.aspect-row .aspect-name { font-size: 13px; color: #334155; }
.aspect-stars { display: flex; gap: 2px; }
.aspect-stars .astar { font-size: 20px; line-height: 1; color: #e2e8f0; cursor: pointer; transition: color .1s; user-select: none; }
.aspect-stars .astar.on { color: #f59e0b; }

.pill-row { display: flex; gap: 8px; flex-wrap: wrap; }
.pill {
  border: 1px solid var(--line); background: #fff; color: #475569;
  padding: 7px 16px; border-radius: 999px; font-size: 13px; cursor: pointer; transition: .15s;
}
.pill:hover { border-color: #cbd5e1; background: #f8fafc; }
.pill.on { background: var(--primary); border-color: var(--primary); color: #fff; font-weight: 600; }

.tag-row { display: flex; gap: 8px; flex-wrap: wrap; }
.tag {
  border: 1px solid var(--line); background: #fff; color: #475569;
  padding: 6px 13px; border-radius: 8px; font-size: 12.5px; cursor: pointer; transition: .15s;
}
.tag:hover { border-color: #cbd5e1; }
.tag.on { background: #eff6ff; border-color: var(--primary); color: var(--primary-dark); font-weight: 600; }

.modal-body textarea {
  width: 100%; border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px;
  font-size: 13.5px; font-family: inherit; resize: vertical; outline: none; line-height: 1.6; color: var(--ink);
}
.modal-body textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,.12); }
.char-count { text-align: right; font-size: 11.5px; color: var(--muted); margin-top: 4px; }

.modal-foot {
  display: flex; justify-content: flex-end; gap: 10px;
  padding: 14px 22px 18px; border-top: 1px solid var(--line-soft); position: sticky; bottom: 0; background: #fff;
}

/* 后台评价展示 */
.sub-tabs { display: flex; gap: 6px; margin-bottom: 12px; }
.sub-tab { border: 1px solid var(--line); background: #fff; padding: 6px 14px; border-radius: 8px; font-size: 13px; cursor: pointer; color: #475569; }
.sub-tab.on { background: var(--primary); border-color: var(--primary); color: #fff; font-weight: 600; }
.eval-sum-box { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 14px; }
.eval-item { border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; background: #f8fafc; }
.eval-item .ei-num { font-size: 22px; font-weight: 700; color: var(--ink); }
.eval-item .ei-lbl { font-size: 12px; color: var(--muted); margin-top: 2px; }
.eval-card-item { border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; margin-bottom: 10px; background: #fff; }
.eval-card-item .ec-head { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 14px; margin-bottom: 8px; }
.eval-card-item .ec-name { font-weight: 700; font-size: 14px; }
.eval-card-item .ec-star { color: #f59e0b; font-size: 15px; letter-spacing: 1px; }
.eval-card-item .ec-stars { color: #e2e8f0; font-size: 15px; }
.eval-comment { font-size: 13px; color: #334155; line-height: 1.6; background: #f8fafc; border-radius: 8px; padding: 9px 12px; white-space: pre-wrap; }
.eval-chips { display: flex; flex-wrap: wrap; gap: 6px; margin: 8px 0; }
.eval-chip { font-size: 12px; background: #eff6ff; color: var(--primary-dark); border-radius: 6px; padding: 3px 9px; }
.eval-chip.warn { background: #fef2f2; color: #dc2626; }

@media (max-width: 640px) {
  .modal { max-height: 94vh; }
  .eval-sum-box { grid-template-columns: repeat(2, 1fr); }
  .star { font-size: 26px; }
}

@media (max-width: 960px) {
  .stats-grid { grid-template-columns: 1fr; }
  .kpi-grid { grid-template-columns: repeat(2, 1fr); }
  .tool-row { grid-template-columns: 26px 24px 1fr 240px; }
  .tool-row .note-input { grid-column: 3 / -1; }
  .cat-mini .mini-bar { width: 80px; }
}
@media (max-width: 640px) {
  .topbar-inner { padding: 10px 14px; }
  .brand h1 { font-size: 15px; }
  .wrap { padding: 14px 12px 30px; }
  .card { padding: 14px 12px 16px; }
  .tool-row { grid-template-columns: 24px 24px 1fr; gap: 8px; }
  .tool-row .row-levels { grid-column: 1 / -1; }
  .tool-row .note-input { grid-column: 1 / -1; }
  .cat-mini { display: none; }
  .student-form input[type="text"] { width: 100%; }
}