/* ===== Design tokens（苹果设计标准）===== */
:root,
[data-theme="light"] {
  --primary: #007aff;           /* iOS system blue */
  --primary-dark: #0062cc;
  --primary-light: rgba(0, 122, 255, 0.12);
  --accent-blue: #007aff;
  --accent-pink: #ff2d92;
  --accent-orange: #ff9500;
  --accent-yellow: #ffcc00;
  --bg: #f5f5f7;                /* Apple 官网浅灰 */
  --card-bg: #ffffff;
  --surface: #f5f5f7;
  --text: #1d1d1f;
  --text-secondary: #6e6e73;
  --border: #d2d2d7;
  --success: #34c759;
  --warning: #ff9500;
  --danger: #ff3b30;
  --radius: 14px;
  --radius-sm: 10px;
  --radius-xs: 8px;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.04), 0 8px 24px rgba(0, 0, 0, 0.06);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.03), 0 4px 12px rgba(0, 0, 0, 0.04);
  --shadow-hover: 0 1px 2px rgba(0, 0, 0, 0.04), 0 12px 32px rgba(0, 0, 0, 0.08);
}

[data-theme="dark"] {
  --primary: #0a84ff;           /* iOS dark system blue */
  --primary-dark: #409cff;
  --primary-light: rgba(10, 132, 255, 0.18);
  --accent-blue: #0a84ff;
  --accent-pink: #ff375f;
  --accent-orange: #ff9f0a;
  --accent-yellow: #ffd60a;
  --bg: #000000;
  --card-bg: #1c1c1e;
  --surface: #2c2c2e;
  --text: #f5f5f7;
  --text-secondary: #98989d;
  --border: #38383a;
  --success: #30d158;
  --warning: #ff9f0a;
  --danger: #ff453a;
  --shadow: 0 12px 48px rgba(0, 0, 0, 0.45);
  --shadow-sm: 0 4px 16px rgba(0, 0, 0, 0.3);
  --shadow-hover: 0 12px 48px rgba(0, 0, 0, 0.5);
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro SC", "SF Pro Text", "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
  letter-spacing: -0.1px;
  background: var(--bg);
  color: var(--text);
  height: 100%;
  overflow: hidden;
  line-height: 1.6;
  transition: background .25s ease, color .25s ease;
}

#app { display: flex; flex-direction: column; height: 100vh; }

/* ===== Topbar ===== */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 26px;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  gap: 16px;
  box-shadow: var(--shadow-sm);
}
[data-theme="dark"] .topbar { background: rgba(28, 28, 30, 0.9); }
.brand { display: flex; align-items: center; gap: 12px; }
.brand-icon {
  width: 38px; height: 38px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  border-radius: var(--radius-xs);
  display: flex; align-items: center; justify-content: center;
  font-weight: 800;
  font-size: 17px;
  box-shadow: var(--shadow-sm);
}
.brand-name { font-weight: 800; font-size: 17px; letter-spacing: -0.3px; }

.tabs {
  display: flex;
  background: var(--surface);
  border-radius: 999px;
  padding: 5px;
  gap: 4px;
}
.tab-btn {
  border: none;
  background: transparent;
  padding: 9px 20px;
  border-radius: 999px;
  cursor: pointer;
  font-size: 14px;
  color: var(--text-secondary);
  transition: all .2s ease;
  font-weight: 500;
}
.tab-btn:hover { color: var(--text); }
.tab-btn.active {
  background: var(--card-bg);
  color: var(--primary);
  font-weight: 700;
  box-shadow: var(--shadow-sm);
}
.topbar-actions { display: flex; align-items: center; gap: 10px; }
.status-pill {
  padding: 7px 14px;
  border-radius: 999px;
  font-size: 13px;
  background: var(--surface);
  color: var(--text-secondary);
  font-weight: 600;
  border: 1px solid var(--border);
  transition: background 200ms ease, color 200ms ease, transform 200ms ease;
}
.status-pill.imported {
  background: var(--primary-light);
  color: var(--primary-dark);
  border-color: transparent;
}
.status-pill.pulse { animation: status-pulse 220ms ease-out; }
@keyframes status-pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.06); }
  100% { transform: scale(1); }
}
.theme-segment,
.source-segment {
  display: flex;
  background: var(--surface);
  border-radius: 999px;
  padding: 4px;
  gap: 2px;
  border: 1px solid var(--border);
}
.theme-option {
  border: none;
  background: transparent;
  padding: 7px 14px;
  border-radius: 999px;
  cursor: pointer;
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
  transition: all .2s ease;
}
.theme-option:hover { color: var(--text); }
.theme-option.active {
  background: var(--card-bg);
  color: var(--primary);
  font-weight: 700;
  box-shadow: var(--shadow-sm);
}
/* ===== Buttons ===== */
.btn {
  border: none;
  padding: 9px 18px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  transition: transform 120ms ease-out, box-shadow 200ms ease, background 200ms ease, filter 200ms ease;
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
}
.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow-hover); }
.btn:active { transform: scale(0.97); }
.btn:focus-visible { outline: none; box-shadow: 0 0 0 3px var(--primary-light); }
.btn:disabled { opacity: 0.55; cursor: not-allowed; transform: none; box-shadow: none; }
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover { filter: brightness(1.08); }
.btn-secondary {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-secondary:hover { background: var(--border); }
.btn-danger { background: rgba(239, 68, 68, 0.12); color: var(--danger); border: 1px solid rgba(239, 68, 68, 0.25); }
.btn-sm { padding: 6px 12px; font-size: 12px; }
.btn-icon {
  width: 36px; height: 36px;
  padding: 0;
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  font-size: 18px;
  line-height: 1;
}
.btn-icon:hover:not(:disabled) { background: var(--border); }

.segmented {
  display: inline-flex;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.segmented .segment {
  border: none;
  background: transparent;
  padding: 7px 14px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: background .2s, color .2s;
}
.segmented .segment:hover { color: var(--text); }
.segmented .segment.active {
  background: var(--card-bg);
  color: var(--primary);
  box-shadow: inset 0 0 0 1px var(--border);
}

/* ===== Main ===== */
.main-container {
  flex: 1;
  overflow: auto;
  padding: 28px;
}

.view-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 24px;
  gap: 16px;
}
.view-title h1 { margin: 0 0 8px; font-size: 26px; font-weight: 800; letter-spacing: -0.4px; }
.view-title p { margin: 0; color: var(--text-secondary); font-size: 13px; line-height: 1.5; }

/* ===== Cards ===== */
.card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  padding: 24px;
  margin-bottom: 24px;
  transition: transform 200ms ease-out, box-shadow 200ms ease, background .25s ease, border-color .25s ease;
}
.card:hover { transform: translateY(-2px); box-shadow: var(--shadow-hover); }
.card-header { cursor: default; }
.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 18px;
  gap: 12px;
}
.card-title { font-weight: 800; font-size: 17px; margin: 0; }
.card-subtitle { font-size: 13px; color: var(--text-secondary); margin-top: 4px; }

/* ===== Forms ===== */
.form-group { margin-bottom: 18px; }
.form-label { display: block; font-size: 13px; font-weight: 700; margin-bottom: 7px; color: var(--text); }
.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  outline: none;
  background: var(--card-bg);
  color: var(--text);
  transition: border-color 150ms ease, box-shadow 150ms ease, transform 120ms ease-out;
}
.form-input:hover, .form-select:hover, .form-textarea:hover { border-color: var(--text-secondary); }
.form-input:focus, .form-select:focus, .form-textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-light); transform: translateY(-1px); }
.form-textarea { min-height: 120px; resize: vertical; font-family: inherit; }

.file-input-wrapper {
  display: flex; align-items: center; gap: 10px;
  padding: 10px;
  border: 2px dashed transparent;
  border-radius: var(--radius-sm);
  transition: border-color 150ms ease, background 150ms ease;
}
.file-input-wrapper.drag-active {
  border-color: var(--primary);
  background: var(--primary-light);
}

/* ===== Stats ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 16px;
}
.stat-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 18px;
}
.stat-label { font-size: 12px; color: var(--text-secondary); margin-bottom: 8px; font-weight: 600; }
.stat-value { font-size: 28px; font-weight: 800; }
.stat-value.danger { color: var(--danger); }
.stat-value.shift-sat { color: var(--accent-blue); }
.stat-value.shift-sun { color: var(--accent-pink); }

/* ===== Tables ===== */
.table-wrap { overflow: auto; border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--card-bg); }
.table-wrap::-webkit-scrollbar { height: 8px; width: 8px; }
.table-wrap::-webkit-scrollbar-track { background: var(--surface); border-radius: 4px; }
.table-wrap::-webkit-scrollbar-thumb { background: var(--text-secondary); border-radius: 4px; }
.table-wrap::-webkit-scrollbar-thumb:hover { background: var(--text); }
.data-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 13px;
  background: var(--card-bg);
}
.data-table th {
  background: var(--surface);
  padding: 12px 16px;
  text-align: left;
  font-weight: 700;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
  color: var(--text-secondary);
  position: sticky;
  top: 0;
  z-index: 2;
}
.data-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
  white-space: nowrap;
  transition: background 120ms ease;
  font-variant-numeric: tabular-nums;
}
.data-table tbody tr { transition: background 120ms ease; }
.data-table tbody tr:hover td { background: var(--surface); }
.data-table tbody tr:last-child td { border-bottom: none; }
.data-table tr.row-pending td { background: rgba(239, 68, 68, 0.06); }
.data-table tr.row-pending td:first-child { border-left: 3px solid var(--danger); }
.data-table tbody tr.row-selected td { background: rgba(99, 102, 241, 0.08); }
.data-table tbody tr.row-selected td:first-child { border-left: 3px solid var(--primary); }
.data-table tbody tr.row-csp td { background: rgba(16, 185, 129, 0.06); }
.data-table tbody tr.row-csp td:first-child { border-left: 3px solid var(--success); }
.csp-badge {
  display: inline-flex; align-items: center;
  padding: 1px 6px;
  border-radius: 999px;
  background: rgba(16, 185, 129, 0.12);
  color: var(--success);
  font-size: 11px;
  font-weight: 700;
  margin-left: 6px;
}
.data-table tbody tr.row-locked td { background: rgba(107, 114, 128, 0.05); }
.data-table tbody tr.row-locked td:first-child { border-left: 3px solid var(--text-secondary); }
.row-lock-icon {
  cursor: pointer;
  margin-right: 6px;
  font-size: 13px;
  opacity: 0.7;
  transition: opacity 120ms ease;
}
.row-lock-icon:hover { opacity: 1; }
.row-warning-icon {
  color: var(--warning);
  cursor: help;
  margin-right: 6px;
  font-size: 14px;
}
[data-theme="dark"] .data-table tbody tr.row-selected td { background: rgba(10, 132, 255, 0.12); }
[data-theme="dark"] .data-table tbody tr.row-selected td:first-child { border-left-color: var(--primary); }
/* ===== Batch bar ===== */
.batch-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  margin: -8px 0 16px;
  background: var(--primary-light);
  border: 1px solid rgba(99, 102, 241, 0.15);
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  color: var(--primary-dark);
  transition: opacity 150ms ease, transform 150ms ease, max-height 150ms ease;
}
.batch-bar.hidden {
  display: none;
}
.batch-actions { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.batch-actions .batch-select { width: auto; min-width: 110px; font-size: 12px; padding: 5px 8px; }
/* ===== Virtual scroll (master view) ===== */
.table-wrap.master-scroll { max-height: 60vh; }
.master-scroll tbody tr:not(.master-spacer) { min-height: 44px; }
.master-spacer td { padding: 0; border-bottom: none; }

/* ===== Change info cell ===== */
.change-cell { min-width: 220px; max-width: 320px; }
.change-info {
  font-size: 12px;
  color: var(--danger);
  background: rgba(239, 68, 68, 0.06);
  border: 1px solid rgba(239, 68, 68, 0.15);
  border-radius: 6px;
  padding: 5px 8px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 260px;
  cursor: pointer;
  transition: background .2s;
}
.change-info:hover { background: rgba(239, 68, 68, 0.1); }
.change-info.confirmed {
  color: var(--text-secondary);
  background: var(--surface);
  border-color: var(--border);
}
.change-info.confirmed .change-time { color: var(--text-secondary); font-size: 11px; margin-left: 4px; }
.change-info.expanded {
  white-space: normal;
  overflow: visible;
  text-overflow: clip;
}
.change-actions {
  display: flex;
  gap: 6px;
  margin-top: 6px;
}
.change-history-toggle {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--surface);
  color: var(--primary);
  border: 1px solid var(--border);
  cursor: pointer;
  margin-top: 5px;
  user-select: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  transition: transform .2s, background .2s;
}
.change-history-toggle:hover { background: var(--primary-light); }
.change-history-list {
  margin-top: 8px;
  padding: 8px 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  font-size: 12px;
  color: var(--text-secondary);
  max-width: 280px;
}
.change-history-item {
  padding: 4px 0;
  border-bottom: 1px dashed var(--border);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.change-history-item:last-child { border-bottom: none; }
.btn-confirm-change, .btn-discard-change { padding: 3px 10px; font-size: 12px; }

/* Vortek 主题下变更信息对比度修复 */
/* ===== Rush class marking ===== */
.rush-pair-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 700;
  color: #fff;
  background: var(--danger);
  vertical-align: middle;
  white-space: nowrap;
}
.rush-pair-badge::before {
  content: '⚡';
  font-size: 10px;
}
.teacher-cell .cls.rush {
  background: rgba(249, 115, 22, 0.08);
  border: 1px dashed var(--accent-orange);
  border-radius: 6px;
  padding: 3px 6px;
}
.teacher-cell .cls.rush-noon { background: rgba(249, 115, 22, 0.12); }
.teacher-cell .cls.rush-evening { background: rgba(234, 179, 8, 0.12); }
.rush-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 14px; height: 14px;
  font-size: 10px;
  margin-right: 3px;
  color: #fff;
  background: var(--accent-orange);
  border-radius: 50%;
  vertical-align: middle;
}
.rush-icon-noon { background: var(--accent-orange); }
.rush-icon-evening { background: var(--accent-yellow); }
.rush-pair {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 16px;
  padding: 1px 5px;
  height: 18px;
  font-size: 10px;
  font-weight: 700;
  color: #fff;
  background: var(--danger);
  border-radius: 999px;
  margin-right: 4px;
  vertical-align: middle;
  white-space: nowrap;
}
.tag-rush-warning {
  background: rgba(249, 115, 22, 0.1);
  color: var(--accent-orange);
  border: 1px solid rgba(249, 115, 22, 0.3);
  margin-left: 6px;
}
[data-theme="dark"] .tag-rush-warning {
  background: rgba(255, 214, 10, 0.15);
  color: var(--accent-yellow);
  border-color: rgba(255, 214, 10, 0.4);
}
/* ===== Global change float ===== */
.change-float {
  position: fixed;
  right: 28px;
  bottom: 28px;
  z-index: 1000;
  background: var(--danger);
  color: #fff;
  padding: 12px 18px;
  border-radius: 999px;
  box-shadow: 0 6px 20px rgba(239, 68, 68, 0.35);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  transition: transform .2s, box-shadow .2s;
}
.change-float:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(239, 68, 68, 0.45);
}
.hidden { display: none !important; }
.change-float.hidden { display: none; }
.custom-tooltip {
  position: fixed;
  z-index: 9999;
  background: var(--card-bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  padding: 6px 10px;
  font-size: 12px;
  line-height: 1.5;
  box-shadow: var(--shadow);
  pointer-events: none;
  white-space: nowrap;
  max-width: 360px;
  overflow: hidden;
  text-overflow: ellipsis;
}
.custom-tooltip.hidden { display: none; }
.toast {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 9999;
  background: var(--card-bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 18px;
  font-size: 13px;
  font-weight: 600;
  box-shadow: var(--shadow-hover);
  transition: opacity .25s ease, transform .25s ease;
  pointer-events: none;
  max-width: 420px;
  text-align: center;
}
.toast.hidden { opacity: 0; transform: translate(-50%, -10px); }
.toast:not(.hidden) { opacity: 1; transform: translate(-50%, 0); }
.change-float-count {
  background: #fff;
  color: var(--danger);
  min-width: 22px;
  height: 22px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 800;
}
/* ===== Status tags ===== */
.tag {
  display: inline-flex; align-items: center;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}
.tag-normal { background: rgba(37, 99, 235, 0.1); color: var(--accent-blue); }
.tag-pending { background: rgba(219, 39, 119, 0.1); color: var(--accent-pink); }
.tag-closed { background: var(--surface); color: var(--text-secondary); }
.tag-conflict { background: rgba(239, 68, 68, 0.1); color: var(--danger); }
.tag-info { background: var(--primary-light); color: var(--primary-dark); }
.tag-warning { background: rgba(245, 158, 11, 0.12); color: var(--warning); }
/* ===== Campus view ===== */
.campus-section { margin-bottom: 28px; }
.campus-title {
  font-size: 18px; font-weight: 800;
  margin-bottom: 14px;
  display: flex; align-items: center; gap: 10px;
}
.day-panel {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
}
.day-panel-header {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 14px;
  font-weight: 700;
  font-size: 15px;
}
.class-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 14px;
  grid-auto-rows: 1fr;
  align-items: stretch;
}
.class-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 100%;
  background: var(--card-bg);
  transition: box-shadow .2s;
}
.class-card:hover { box-shadow: var(--shadow); }
.class-card-header {
  background: var(--surface);
  padding: 10px 12px;
  font-weight: 700;
  font-size: 13px;
  display: flex; justify-content: space-between;
}
.class-card-body { padding: 6px; flex: 1; display: flex; flex-direction: column; }
.class-card-footer {
  padding: 10px 12px;
  font-size: 12px;
  color: var(--text-secondary);
  border-top: 1px solid var(--border);
  text-align: right;
  background: var(--surface);
}

/* ===== Teacher view ===== */
.teacher-table { width: max-content; min-width: 100%; }
.teacher-table th, .teacher-table td { white-space: nowrap; }
.teacher-cell {
  min-width: 150px;
  font-size: 12px;
}
.teacher-cell .cls {
  padding: 3px 0;
  border-bottom: 1px dashed var(--border);
  cursor: grab;
  position: relative;
}
.teacher-cell .cls:last-child { border-bottom: none; }
.teacher-cell .cls:active { cursor: grabbing; }
.teacher-cell.conflict {
  background: rgba(239, 68, 68, 0.08);
  animation: conflict-pulse 2s ease-out 3;
}
@keyframes conflict-pulse {
  0%, 100% { box-shadow: inset 0 0 0 1px rgba(239, 68, 68, 0.20); }
  50% { box-shadow: inset 0 0 0 2px rgba(239, 68, 68, 0.45); }
}
.teacher-cell.droppable { transition: background .15s, outline .15s, box-shadow .15s; }
.teacher-cell .cls.dragging {
  opacity: 0.75;
  transform: scale(1.04);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.22);
  border-radius: 6px;
  background: var(--primary-light);
  border-color: var(--primary);
  z-index: 10;
}
.teacher-cell.drag-over {
  background: var(--primary-light);
  outline: 2px dashed var(--primary);
  outline-offset: -3px;
  box-shadow: inset 0 0 0 2px rgba(var(--primary-rgb, 99, 102, 241), 0.15);
}
.teacher-cell.drag-over-forbidden {
  background: rgba(239, 68, 68, 0.08);
  outline: 2px dashed #ef4444;
  outline-offset: -3px;
}
.teacher-recommend-btn {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 2px 6px;
  font-size: 12px;
  cursor: pointer;
  margin-top: 4px;
  transition: transform 120ms ease, background 150ms ease, border-color 150ms ease;
}
.teacher-recommend-btn:hover { background: var(--surface); border-color: var(--primary); transform: translateY(-1px); }

/* ===== Conflict resolution modal ===== */
.conflict-modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 1;
  transition: opacity 150ms ease;
}
.conflict-modal.hidden { display: none; }
.conflict-modal-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-hover);
  width: 420px;
  max-width: 90vw;
  max-height: 80vh;
  overflow: auto;
  padding: 20px;
}
.conflict-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}
.conflict-modal-header h3 { margin: 0; font-size: 18px; }
.conflict-modal-close {
  background: transparent;
  border: none;
  font-size: 22px;
  cursor: pointer;
  color: var(--text-secondary);
}
.conflict-modal-close:hover { color: var(--text); }
.conflict-modal-records {
  margin-bottom: 12px;
  font-size: 13px;
}
.conflict-modal-record {
  display: inline-block;
  padding: 3px 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  margin-right: 6px;
  cursor: pointer;
}
.conflict-modal-record:hover { border-color: var(--primary); }
.conflict-options { display: flex; flex-direction: column; gap: 10px; }
.conflict-option {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  cursor: pointer;
  transition: background 120ms ease, border-color 120ms ease;
}
.conflict-option:hover { background: var(--surface); border-color: var(--primary); }
.conflict-option input { margin-top: 3px; }
.conflict-option span { font-weight: 600; font-size: 14px; }
.conflict-option small { color: var(--text-secondary); font-size: 12px; margin-left: auto; }
.conflict-modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 16px;
}
.teacher-rush-summary {
  font-size: 12px;
  color: var(--text-secondary);
  min-width: 140px;
  max-width: 220px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.teacher-rush-summary .rush-gap {
  display: inline;
  white-space: nowrap;
}
.teacher-rush-summary .rush-gap-sep {
  color: var(--border);
  margin: 0 4px;
}
.teacher-table th:last-child,
.teacher-table td:last-child {
  position: sticky;
  right: 0;
  background: var(--card-bg);
  z-index: 3;
  box-shadow: -4px 0 12px rgba(0, 0, 0, 0.08);
}
.teacher-table th:last-child {
  z-index: 4;
}
.teacher-cell.drag-over { background: var(--primary-light); outline: 2px dashed var(--primary); }
.teacher-cell .cls.pending { background: rgba(239, 68, 68, 0.08); border-radius: 6px; padding: 3px 6px; color: #ef4444; font-weight: 600; }
.teacher-cell .cls.changed { background: rgba(245, 158, 11, 0.08); border-radius: 6px; padding: 3px 6px; }
.teacher-cell .cls .pending-dot {
  display: inline-block;
  width: 6px; height: 6px;
  background: var(--danger);
  border-radius: 50%;
  margin-left: 4px;
  vertical-align: middle;
}

/* ===== History ===== */
.history-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  background: var(--card-bg);
}
.history-item.undo { background: var(--primary-light); }
.history-meta { font-size: 12px; color: var(--text-secondary); }
.history-detail { font-size: 13px; margin-top: 4px; }

/* ===== Filters ===== */
.filter-panel {
  width: 240px;
  flex-shrink: 0;
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px;
  border: 1px solid var(--border);
}
.filter-title { font-weight: 800; margin-bottom: 16px; font-size: 15px; }
.filter-group { margin-bottom: 16px; }
.filter-group label { display: block; font-size: 12px; color: var(--text-secondary); margin-bottom: 6px; font-weight: 600; }

.split-layout { display: flex; gap: 24px; }
.split-layout .content { flex: 1; min-width: 0; }

/* ===== Inline edit ===== */
.editable {
  border-bottom: 1px dashed var(--primary);
  cursor: text;
  padding: 2px 6px;
  border-radius: 4px;
  transition: background .2s;
}
.editable:hover { background: var(--primary-light); }
.editable select.editable-select {
  width: auto;
  min-width: 80px;
  max-width: 160px;
  padding: 2px 6px;
  font-size: 13px;
}

/* ===== View enter animation ===== */
@keyframes view-enter {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}
.view-enter {
  animation: view-enter 200ms ease-out both;
}

.analytics-source-tabs {
  display: flex;
  gap: 8px;
  background: var(--surface);
  padding: 5px;
  border-radius: 999px;
}
.analytics-source-btn {
  border: none;
  background: transparent;
  color: var(--text-secondary);
  padding: 7px 16px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all .2s;
}
.analytics-source-btn:hover { color: var(--text); }
.analytics-source-btn.active {
  background: var(--primary);
  color: #fff;
}
.analytics-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.analytics-grid .card { margin-bottom: 0; }
.analytics-grid .wide-card,
.analytics-grid .kpi-card {
  grid-column: 1 / -1;
}
.kpi-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 16px;
}
.kpi-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px;
  text-align: center;
  transition: transform 200ms ease, box-shadow 200ms ease;
}
.kpi-box:hover { transform: translateY(-2px); box-shadow: var(--shadow-hover); }
.kpi-value {
  font-size: 28px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
}
.kpi-title { font-size: 13px; color: var(--text-secondary); margin-top: 6px; }
.kpi-subtitle { font-size: 11px; color: var(--text-secondary); margin-top: 4px; }
.bar-chart { display: flex; flex-direction: column; gap: 10px; }
.bar-row {
  display: grid;
  grid-template-columns: 120px 1fr 36px;
  align-items: center;
  gap: 10px;
  font-size: 13px;
}
.bar-label {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--text-secondary);
}
.bar-track {
  height: 18px;
  background: var(--surface);
  border-radius: 999px;
  overflow: hidden;
}
.bar-fill {
  height: 100%;
  background: var(--primary);
  border-radius: 999px;
  transition: width 400ms ease-out;
}
.bar-fill.bar-danger { background: var(--danger); }
.bar-fill.bar-warning { background: var(--warning); }
.bar-fill.bar-accent { background: var(--accent-pink); }
.bar-fill.bar-success { background: var(--success); }
.bar-value { text-align: right; font-weight: 700; }
.insight-box {
  margin-top: 14px;
  padding: 12px;
  background: var(--primary-light);
  border-radius: var(--radius-xs);
  font-size: 13px;
  color: var(--primary-dark);
}

/* ===== Score card ===== */
.score-card .card-title { margin-bottom: 18px; }
.score-empty {
  padding: 40px;
  text-align: center;
  color: var(--text-secondary);
  font-size: 14px;
}
.score-body {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 28px;
  align-items: start;
}
.score-left {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
}
.score-ring {
  position: relative;
  width: 160px;
  height: 160px;
}
.score-ring svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}
.score-ring circle {
  fill: none;
  stroke-width: 10;
}
.score-ring-bg { stroke: var(--surface); }
.score-ring-fill {
  stroke: var(--primary);
  stroke-linecap: round;
  transition: stroke-dashoffset 600ms ease-out, stroke 300ms ease;
}
.score-ring.success .score-ring-fill { stroke: var(--success); }
.score-ring.primary .score-ring-fill { stroke: var(--primary); }
.score-ring.warning .score-ring-fill { stroke: var(--warning); }
.score-ring.danger .score-ring-fill { stroke: var(--danger); }
.score-ring-text {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.score-ring-score {
  font-size: 42px;
  font-weight: 800;
  line-height: 1;
  color: var(--text);
}
.score-ring-grade {
  font-size: 13px;
  font-weight: 700;
  margin-top: 4px;
  padding: 2px 10px;
  border-radius: 999px;
  background: var(--surface);
  color: var(--text-secondary);
}
.score-summary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  width: 100%;
}
.score-summary-item {
  text-align: center;
  padding: 10px;
  background: var(--surface);
  border-radius: var(--radius-xs);
}
.score-summary-label {
  display: block;
  font-size: 11px;
  color: var(--text-secondary);
  margin-bottom: 4px;
}
.score-summary-value {
  display: block;
  font-size: 18px;
  font-weight: 800;
  color: var(--text);
}
.score-right {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.score-dimensions {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.score-dim {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.score-dim-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
}
.score-dim-name { font-weight: 700; color: var(--text); }
.score-dim-value { font-weight: 800; color: var(--primary); }
.score-dim-max { font-weight: 500; color: var(--text-secondary); font-size: 11px; }
.score-dim-desc { font-size: 11px; color: var(--text-secondary); }
.score-suggestions {
  background: var(--surface);
  border-radius: var(--radius-xs);
  padding: 14px;
}
.score-suggestions-title {
  font-weight: 700;
  font-size: 13px;
  margin-bottom: 8px;
  color: var(--text);
}
.score-suggestions ul {
  margin: 0;
  padding-left: 18px;
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
}
.score-suggestions li::marker { color: var(--primary); }

@media (max-width: 900px) {
  .score-body { grid-template-columns: 1fr; }
  .score-dimensions { grid-template-columns: 1fr; }
}

.cell-wrap {
  white-space: normal;
  max-width: 240px;
}
.violation-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 12px;
}
.violation-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 8px 10px;
  background: var(--surface);
  border-radius: var(--radius-xs);
  border-left: 3px solid var(--warning);
}
.violation-item.hard { border-left-color: var(--danger); }
.violation-badge {
  flex-shrink: 0;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 700;
  background: var(--warning);
  color: #fff;
}
.violation-item.hard .violation-badge { background: var(--danger); }

/* ===== Utility ===== */
.text-danger { color: var(--danger); }
.text-success { color: var(--success); }
.text-muted { color: var(--text-secondary); }
.mb-0 { margin-bottom: 0 !important; }
.mt-2 { margin-top: 8px; }
.flex { display: flex; }
.gap-2 { gap: 8px; }

/* ===== Scrollbar ===== */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-secondary); }

/* ===== Conflict & pending teacher ===== */
.text-conflict { color: var(--danger) !important; font-weight: 700; }
.text-pending-teacher { color: var(--accent-pink) !important; font-weight: 600; }
.text-shift-sat { color: var(--accent-blue); font-weight: 600; }
.text-shift-sun { color: var(--accent-pink); font-weight: 600; }
.class-gaozhong { color: var(--accent-blue); }
.class-suyang { color: var(--accent-pink); }
.row-pending-teacher { background: rgba(219, 39, 119, 0.08); }
.tag-pending-teacher { background: rgba(219, 39, 119, 0.1); color: var(--accent-pink); }

/* ===== Campus shift layout ===== */
.campus-shift-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}
.shift-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
}
.shift-panel-header {
  font-size: 15px;
  font-weight: 800;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--primary-light);
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text);
}
.shift-panel-body {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* ===== Grade section ===== */
.grade-section {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px;
}
.grade-title {
  font-weight: 700;
  font-size: 14px;
  margin-bottom: 12px;
}

/* ===== Class card body ===== */
.campus-card-body { padding: 0; }
.class-card-row {
  display: grid;
  grid-template-columns: 50px 1fr 1fr 50px;
  gap: 8px;
  padding: 7px 12px;
  font-size: 12px;
  border-bottom: 1px solid var(--border);
  align-items: center;
  transition: background 120ms ease;
}
.class-card-row:hover,
.class-card-row.hover { background: var(--surface); }
.class-card-row.suyang { grid-template-columns: 46px 1fr 1fr 44px; }
.class-card-row:last-child { border-bottom: none; }
.class-card-row.header {
  background: var(--surface);
  font-weight: 700;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border);
}
.class-card-row.empty { color: var(--text-secondary); }
.class-card-row.changed {
  background: rgba(245, 158, 11, 0.08);
  border-left: 3px solid var(--warning);
}
.class-card-row.pending {
  background: rgba(239, 68, 68, 0.08);
  border-left: 3px solid var(--danger);
}
.class-card-row .slot-time { color: var(--text-secondary); font-weight: 500; }
.class-card-row .slot-subject { font-weight: 500; }
.class-card-row .slot-class { font-weight: 500; color: var(--text-secondary); }
.class-card-row .slot-teacher {
  color: var(--text-secondary);
  text-align: left;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.class-card-row .slot-count { text-align: right; font-weight: 700; }

/* ===== Responsive ===== */
@media (max-width: 1200px) {
  .campus-shift-grid { grid-template-columns: 1fr; }
  .split-layout { flex-direction: column; }
  .filter-panel { width: 100%; }
  .topbar { flex-wrap: wrap; }
  .tabs { order: 3; width: 100%; justify-content: center; }
}

/* ===== Teacher schedule view ===== */
.ts-layout {
  display: flex;
  gap: 20px;
  padding: 20px;
}
.ts-sidebar {
  width: 240px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.ts-sidebar-header {
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}
.ts-teacher-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 70vh;
  overflow-y: auto;
  padding-right: 4px;
}
.ts-teacher-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 10px 12px;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  text-align: left;
  transition: background .2s, border-color .2s;
}
.ts-teacher-item:hover { background: var(--border); }
.ts-teacher-item.active {
  background: var(--primary-light);
  border-color: var(--primary);
  color: var(--primary-dark);
}
.ts-teacher-name {
  font-weight: 600;
  font-size: 13px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.ts-teacher-meta {
  font-size: 11px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
}
.ts-warning {
  background: var(--danger);
  color: #fff;
  min-width: 18px;
  height: 18px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: 700;
}
.ts-rush {
  background: var(--warning);
  color: #fff;
  min-width: 18px;
  height: 18px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: 700;
}
.ts-main {
  flex: 1;
  min-width: 0;
}
.ts-table {
  width: 100%;
  table-layout: fixed;
}
.ts-table th,
.ts-table td {
  width: 40%;
  vertical-align: top;
}
.ts-table th:first-child,
.ts-table td:first-child {
  width: 80px;
}
.ts-time-label {
  text-align: center;
  font-weight: 700;
  color: var(--text-secondary);
  background: var(--surface);
  padding: 12px 8px;
}
.ts-cell {
  min-height: 80px;
  padding: 10px;
  background: var(--surface);
  border: 1px solid var(--border);
}
.ts-cell-conflict {
  background: rgba(239, 68, 68, 0.08);
  border-color: var(--danger);
}
.ts-class {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  padding: 6px 8px;
  margin-bottom: 6px;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: transform .12s, box-shadow .2s;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.ts-class:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}
.ts-class.pending { border-left: 3px solid var(--danger); }
.ts-class.changed { border-left: 3px solid var(--warning); }
.ts-class.ts-rush-item { background: rgba(245, 158, 11, 0.08); }

@media (max-width: 1200px) {
  .ts-layout { flex-direction: column; }
  .ts-sidebar { width: 100%; max-height: 240px; }
}

/* ===== Export modal ===== */
.export-modal {
  position: fixed;
  inset: 0;
  z-index: 9998;
  background: rgba(0, 0, 0, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(2px);
}
.export-modal.hidden { display: none; }
.export-modal-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow-hover);
  width: 520px;
  max-width: 90vw;
  overflow: hidden;
}
.export-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  border-bottom: 1px solid var(--border);
}
.export-modal-header h3 { margin: 0; font-size: 18px; }
.export-modal-close {
  background: none;
  border: none;
  font-size: 24px;
  color: var(--text-secondary);
  cursor: pointer;
}
.export-modal-body {
  padding: 18px 22px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.export-option {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  text-align: left;
  transition: background .2s, border-color .2s, transform .12s;
}
.export-option:hover {
  background: var(--border);
  border-color: var(--primary);
  transform: translateY(-1px);
}
.export-option strong { font-size: 14px; }
.export-option span { font-size: 12px; color: var(--text-secondary); }
@media (max-width: 1200px) {
  .export-modal-body { grid-template-columns: 1fr; }
}

/* ===== Teacher availability modal ===== */
.availability-modal {
  position: fixed;
  inset: 0;
  z-index: 9998;
  background: rgba(0, 0, 0, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(2px);
}
.availability-modal.hidden { display: none; }
.availability-modal-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow-hover);
  width: 460px;
  max-width: 90vw;
  overflow: hidden;
}
.availability-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  border-bottom: 1px solid var(--border);
}
.availability-modal-header h3 { margin: 0; font-size: 16px; }
.availability-modal-close {
  background: none;
  border: none;
  font-size: 24px;
  color: var(--text-secondary);
  cursor: pointer;
}
.availability-modal-body {
  padding: 18px 22px;
  display: flex;
  gap: 20px;
}
.availability-shift-col { flex: 1; }
.availability-shift-title {
  font-weight: 700;
  font-size: 14px;
  margin-bottom: 10px;
  text-align: center;
}
.availability-shift-grid {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.availability-slot {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  background: var(--surface);
  cursor: pointer;
  font-size: 13px;
}
.availability-slot input { cursor: pointer; }
.availability-modal-footer {
  padding: 14px 22px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

/* ===== CSP solve options modal ===== */
.csp-modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  backdrop-filter: blur(2px);
}
.csp-modal.hidden { display: none; }
.csp-modal-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  width: 420px;
  max-width: 90vw;
  overflow: hidden;
}
.csp-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 22px;
  border-bottom: 1px solid var(--border);
}
.csp-modal-header h3 { margin: 0; font-size: 16px; }
.csp-modal-close {
  background: none;
  border: none;
  font-size: 22px;
  color: var(--text-secondary);
  cursor: pointer;
}
.csp-modal-body {
  padding: 18px 22px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.csp-hint {
  margin: 0;
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
}
.csp-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.csp-field > span { font-size: 13px; color: var(--text-secondary); }
.csp-field.csp-check {
  flex-direction: row;
  align-items: center;
  gap: 10px;
}
.csp-field.csp-check input { width: 16px; height: 16px; cursor: pointer; }
.csp-field.csp-check span { color: var(--text-primary); }
.csp-modal-footer {
  padding: 14px 22px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

/* ===== Classroom view ===== */
.classroom-content { margin-top: 20px; display: flex; flex-direction: column; gap: 20px; }

/* Campus section */
.classroom-campus-section { padding: 18px; }
.classroom-campus-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 17px;
  font-weight: 800;
  margin-bottom: 14px;
}

/* Shift tabs */
.classroom-shift-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 10px;
}
.classroom-shift-tab {
  border: none;
  background: var(--surface);
  color: var(--text-secondary);
  padding: 7px 16px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all .2s;
}
.classroom-shift-tab:hover { color: var(--text); background: var(--border); }
.classroom-shift-tab.active {
  background: var(--primary);
  color: #fff;
}
/* Timeline */
.classroom-timeline-wrap {
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--card-bg);
  max-height: 60vh;
}
.classroom-timeline-wrap::-webkit-scrollbar { height: 8px; width: 8px; }
.classroom-timeline-wrap::-webkit-scrollbar-track { background: var(--surface); border-radius: 4px; }
.classroom-timeline-wrap::-webkit-scrollbar-thumb { background: var(--text-secondary); border-radius: 4px; }
.classroom-timeline-wrap::-webkit-scrollbar-thumb:hover { background: var(--text); }

.classroom-timeline-header {
  display: flex;
  align-items: center;
  height: 38px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 5;
}
.classroom-timeline-header-cell {
  flex-shrink: 0;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
}
.classroom-name-cell {
  width: 120px;
  flex: 0 0 120px;
  padding: 0 12px;
  display: flex;
  align-items: center;
  position: sticky;
  left: 0;
  z-index: 6;
  background: var(--surface);
  border-right: 1px solid var(--border);
  font-weight: 700;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.classroom-timeline-header .classroom-name-cell { z-index: 7; }
.time-header-track { position: relative; height: 100%; }
.classroom-time-header-label {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 120px;
  text-align: center;
  font-size: 12px;
  color: var(--text-secondary);
  pointer-events: none;
}

/* Rows */
.classroom-timeline-rows { position: relative; }
.classroom-timeline-row {
  display: flex;
  align-items: stretch;
  border-bottom: 1px solid var(--border);
  position: relative;
  min-height: 48px;
}
.classroom-timeline-row:last-child { border-bottom: none; }
.classroom-timeline-row .classroom-name-cell {
  background: var(--card-bg);
  font-weight: 600;
  font-size: 13px;
}

.classroom-timeline-track {
  position: relative;
  flex-shrink: 0;
  cursor: pointer;
}
.classroom-grid-lines {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.classroom-grid-line {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--border);
}

/* Time blocks */
.classroom-time-block {
  position: absolute;
  width: 116px;
  margin-left: 2px;
  padding: 4px 6px;
  border-radius: 6px;
  background: var(--primary-light);
  color: var(--primary-dark);
  border: 1px solid var(--primary);
  font-size: 11px;
  line-height: 1.35;
  cursor: pointer;
  transition: transform .1s, box-shadow .1s;
  overflow: hidden;
  box-shadow: 0 1px 2px rgba(0,0,0,0.04);
  z-index: 2;
}
.classroom-time-block:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 10px rgba(0,0,0,0.08);
  z-index: 3;
}
.classroom-block-class {
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.classroom-block-meta {
  font-size: 10px;
  opacity: 0.85;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.classroom-time-block.conflict {
  background: rgba(239, 68, 68, 0.12);
  color: var(--danger);
  border-color: var(--danger);
}
.classroom-time-block.conflict:hover {
  background: var(--danger);
  color: #fff;
  border-color: var(--danger);
}

/* Legend */
.classroom-legend {
  display: flex;
  gap: 18px;
  margin-top: 14px;
  font-size: 13px;
  color: var(--text-secondary);
}
.classroom-legend-item { display: inline-flex; align-items: center; gap: 6px; }
.classroom-legend-dot {
  width: 12px;
  height: 12px;
  border-radius: 2px;
  border: 1px solid var(--border);
}
.classroom-legend-dot.empty { background: var(--card-bg); }
.classroom-legend-dot.occupied { background: var(--primary-light); border-color: var(--primary); }
.classroom-legend-dot.conflict { background: rgba(239, 68, 68, 0.2); border-color: var(--danger); }

.classroom-modal {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: rgba(0, 0, 0, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.classroom-modal-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow-hover);
  width: 460px;
  max-width: 90vw;
  max-height: 90vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.classroom-modal-card .modal-header,
.classroom-modal-card .modal-body,
.classroom-modal-card .modal-footer {
  padding: 14px 22px;
}
.classroom-modal-card .modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
}
.classroom-modal-card .modal-header h3 { margin: 0; font-size: 16px; }
.classroom-modal-card .modal-close {
  background: none;
  border: none;
  font-size: 22px;
  color: var(--text-secondary);
  cursor: pointer;
}
.classroom-modal-card .modal-body {
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.classroom-modal-card .modal-footer {
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}
.classroom-modal-card .form-select[multiple] option { padding: 6px 8px; }
.classroom-modal-filter {
  margin-bottom: 8px;
}
.classroom-modal-filter .csp-field.csp-check {
  flex-direction: row;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
}
.classroom-modal-filter input[type="checkbox"] {
  width: 16px;
  height: 16px;
  cursor: pointer;
}

/* Constraint report modal */
.constraint-modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 200;
  display: flex;
  align-items: flex-start;
  justify-content: flex-end;
  padding: 80px 20px 20px;
}
.constraint-modal.hidden { display: none; }
.constraint-modal-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  width: 420px;
  max-width: 90vw;
  max-height: calc(100vh - 100px);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-hover);
}
.constraint-modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}
.constraint-modal-header h3 { margin: 0; font-size: 16px; }
.constraint-modal-close {
  background: transparent;
  border: none;
  font-size: 22px;
  color: var(--text-secondary);
  cursor: pointer;
}
.constraint-modal-body {
  padding: 16px 20px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.constraint-summary {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 6px;
  flex-wrap: wrap;
}
.constraint-count {
  font-size: 13px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 999px;
}
.constraint-count.hard { background: rgba(239, 68, 68, 0.15); color: #ef4444; }
.constraint-count.soft { background: rgba(245, 158, 11, 0.15); color: #f59e0b; }
.constraint-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px;
  cursor: pointer;
  transition: border-color 200ms ease, background 200ms ease;
}
.constraint-item:hover {
  border-color: var(--primary);
  background: var(--primary-light);
}
.constraint-item-header {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-bottom: 6px;
}
.constraint-badge {
  font-size: 11px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
}
.constraint-badge-hard { background: #ef4444; color: #fff; }
.constraint-badge-soft { background: #f59e0b; color: #fff; }
.constraint-type {
  font-size: 12px;
  color: var(--text-secondary);
}
.constraint-message {
  font-size: 13px;
  line-height: 1.5;
  color: var(--text);
}
.constraint-meta {
  font-size: 11px;
  color: var(--text-secondary);
  margin-top: 6px;
}
#btn-constraint-report.has-issues {
  background: rgba(239, 68, 68, 0.15);
  color: #ef4444;
  border-color: rgba(239, 68, 68, 0.3);
}
/* Analytics drill-down */
.kpi-drill,
.bar-drill,
.analytics-drill-row {
  cursor: pointer;
  transition: background 150ms ease, transform 150ms ease;
}
.kpi-drill:hover,
.bar-drill:hover {
  transform: translateY(-1px);
}
.kpi-drill:hover {
  background: var(--primary-light);
}
.bar-drill:hover {
  background: var(--primary-light);
}
.analytics-drill-row:hover {
  background: var(--primary-light);
}
.kpi-drill .kpi-value,
.kpi-drill .kpi-title {
  color: var(--primary);
}
.bar-drill .bar-label {
  color: var(--primary);
  text-decoration: underline;
  text-decoration-style: dotted;
}

/* Campus lazy render */
.campus-lazy-more-wrap {
  display: flex;
  justify-content: center;
  padding: 12px 0 4px;
}
.campus-lazy-more-btn {
  min-width: 220px;
}

/* Classroom conflict badge（教室冲突角标，配合 .rush-gap 复用 #custom-tooltip） */
.classroom-time-block.classroom-conflict {
  padding-right: 36px; /* 给角标留出空间，避免压住班级名 */
}
.classroom-conflict-badge {
  position: absolute;
  top: 2px;
  right: 2px;
  padding: 0 5px;
  border-radius: 8px;
  background: var(--danger);
  color: #fff;
  font-size: 10px;
  line-height: 14px;
  white-space: nowrap;
  z-index: 4;
  pointer-events: none;
}
.classroom-time-block.conflict {
  border-width: 2px;
}
.classroom-time-block.conflict:hover .classroom-conflict-badge {
  background: #fff;
  color: var(--danger);
}

/* 师资表：懒渲染「展开更多学科组」按钮 */
.teacher-lazy-more {
  display: block;
  margin: 4px auto 0;
}

/* ===== 异步求解进度条（Web Worker） ===== */
.csp-progress {
  padding: 0 22px 14px;
}
.csp-progress-bar {
  height: 8px;
  width: 0%;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--primary), var(--primary-dark));
  transition: width 0.2s ease;
}
.csp-progress-text {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  color: var(--text-secondary);
}

/* 校区套班表：一个套班一个块（合并周六/周日） */
.campus-body {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.class-card-row.merged { grid-template-columns: 40px 52px 1fr 1fr 46px; }
.class-card-row.merged.suyang { grid-template-columns: 40px 48px 1fr 1fr 42px; }
.class-card-row .slot-shift { color: var(--text-secondary); font-weight: 600; font-size: 12px; }

/* 顶部筛选栏：总控表横向筛选条 */
.master-filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 10px 14px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  margin-bottom: 18px;
}
.master-filter-bar .filter-group { margin-bottom: 0; min-width: 108px; }
.master-filter-bar .filter-group label { margin-bottom: 4px; }
.master-filter-bar .filter-group input[type="text"] { width: 140px; }
.master-filter-bar #master-reset-filter { margin-bottom: 1px; }

/* 师资表：学科按钮行 */
.subject-filter-bar {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.subject-filter-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  padding: 7px 0;
  flex-shrink: 0;
}
.subject-segments { flex-wrap: wrap; row-gap: 8px; }

/* 校区套班表：校区按钮行 */
.campus-filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

/* 阶段1：按钮文字不换行 + 顶栏防挤压 */
.btn, .tab-btn { white-space: nowrap; }
.topbar { flex-wrap: nowrap; gap: 12px; }
.topbar-actions { flex-shrink: 0; flex-wrap: nowrap; }
.status-pill { flex-shrink: 0; white-space: nowrap; }
.theme-segment { flex-shrink: 0; }
.brand-name { white-space: nowrap; }

/* 导入弹窗：来源单选 / 字段映射 */
.picker-row {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
}
.picker-row:last-child { border-bottom: none; }
.picker-row-label {
  flex: 1;
  min-width: 140px;
  font-size: 13px;
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.picker-row-select { width: 200px; }

/* 苹果设计标准：顶栏毛玻璃与控件细节 */
.topbar {
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
}
.btn {
  border-radius: var(--radius-sm);
  transition: background .2s ease, color .2s ease, border-color .2s ease, box-shadow .2s ease, transform .12s ease;
}
.btn:active { transform: scale(0.98); }
.form-input, .form-select, .form-textarea { border-radius: var(--radius-sm); }
.card { border-radius: var(--radius); }

/* ===== 登录页 / 项目页（苹果设计标准）===== */
body.logged-out .auth-only { display: none !important; }
.hidden { display: none !important; }

.auth-page {
  min-height: calc(100vh - 120px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
}
.auth-card {
  width: 380px;
  max-width: 100%;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: var(--shadow);
  padding: 36px 32px;
  text-align: center;
}
.auth-brand-icon {
  width: 56px; height: 56px;
  margin: 0 auto 16px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  font-size: 24px; font-weight: 800;
}
.auth-title { font-size: 22px; font-weight: 800; margin: 0 0 6px; letter-spacing: -0.3px; }
.auth-subtitle { font-size: 13px; color: var(--text-secondary); margin: 0 0 22px; }
.auth-mode { margin-bottom: 20px; }
.auth-mode .segment { flex: 1; }
.auth-card .form-group { text-align: left; margin-bottom: 14px; }
.auth-error {
  background: rgba(255, 59, 48, 0.1);
  color: var(--danger);
  border-radius: var(--radius-sm);
  font-size: 13px;
  padding: 8px 12px;
  margin-bottom: 12px;
}
.auth-submit { width: 100%; padding: 10px 0; font-size: 15px; margin-top: 4px; }
.auth-hint { font-size: 12px; color: var(--text-secondary); margin: 16px 0 0; }

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}
.project-card { padding: 20px; display: flex; flex-direction: column; gap: 8px; }
.project-card-name { font-size: 16px; font-weight: 700; cursor: text; border-radius: 6px; padding: 2px 4px; margin-left: -4px; }
.project-card-name:hover { background: var(--surface); }
.project-rename-input { font-size: 16px; font-weight: 700; padding: 2px 4px; }
.project-card-meta { font-size: 12px; color: var(--text-secondary); }
.project-card-actions { display: flex; gap: 8px; margin-top: 8px; flex-wrap: wrap; }
.legacy-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 18px;
  margin-bottom: 16px;
  background: var(--primary-light);
  border-color: var(--primary);
  font-size: 14px;
}

/* ===== UI 打磨：滚动条 / 表头吸顶 / 焦点环 ===== */
* { scrollbar-width: thin; scrollbar-color: var(--border) transparent; }
*::-webkit-scrollbar { width: 8px; height: 8px; }
*::-webkit-scrollbar-thumb { background: var(--border); border-radius: 999px; }
*::-webkit-scrollbar-thumb:hover { background: var(--text-secondary); }
*::-webkit-scrollbar-track { background: transparent; }

.data-table thead th {
  position: sticky;
  top: 0;
  z-index: 3;
  background: var(--card-bg);
}

.btn:focus-visible, .tab-btn:focus-visible, .segment:focus-visible, .theme-option:focus-visible,
.form-input:focus-visible, .form-select:focus-visible, .form-textarea:focus-visible, .campus-filter-btn:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.view-header { margin-bottom: 20px; }
.card { border: 1px solid var(--border); }

/* 师资表：上午/下午/晚间分段表头 */
.teacher-head-group th.th-period {
  background: var(--surface);
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 700;
  text-align: center;
  letter-spacing: 1px;
  border-left: 1px solid var(--border);
  border-bottom: 2px solid var(--primary);
}
.teacher-head-group th.th-period + th.th-period { border-left: 1px solid var(--border); }
.teacher-head-slots th { font-size: 12px; color: var(--text-secondary); }

/* ===== 动效打磨 ===== */
@keyframes rise-in {
  from { opacity: 0; transform: translateY(12px) scale(0.995); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }
@keyframes pop-in {
  0% { opacity: 0; transform: scale(0.96) translateY(8px); }
  100% { opacity: 1; transform: scale(1) translateY(0); }
}

.card, .campus-section, .grade-section, .project-card {
  animation: rise-in .32s cubic-bezier(.22,.72,.28,1) both;
}
.class-cards .class-card:nth-child(4n+2) { animation-delay: .05s; }
.class-cards .class-card:nth-child(4n+3) { animation-delay: .1s; }
.class-cards .class-card:nth-child(4n+4) { animation-delay: .15s; }
.project-grid .project-card:nth-child(3n+2) { animation-delay: .06s; }
.project-grid .project-card:nth-child(3n+3) { animation-delay: .12s; }

.csp-modal, .constraint-modal, .conflict-modal, .availability-modal, .export-modal {
  animation: fade-in .18s ease both;
}
.csp-modal-card, .constraint-modal-card, .conflict-modal-card, .availability-modal-card, .export-modal-card {
  animation: pop-in .24s cubic-bezier(.22,.72,.28,1) both;
}

/* 卡片与行悬停手感 */
.card, .project-card, .class-card, .kpi-box {
  transition: box-shadow .22s ease, transform .18s ease, border-color .22s ease;
}
.card:hover, .project-card:hover, .class-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-1px);
}
.data-table tbody tr { transition: background .14s ease; }

/* 标签页切换弹性 */
.tab-btn { transition: background .2s ease, color .2s ease, box-shadow .2s ease, transform .12s ease; }
.tab-btn:active { transform: scale(0.96); }
.segment { transition: background .2s ease, color .2s ease; }

/* 视图切换过渡增强 */
.view-enter { animation: rise-in .24s cubic-bezier(.22,.72,.28,1) both; }

/* 尊重系统减弱动效设置 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* 项目独立界面：未进入项目时隐藏顶部菜单与工作按钮 */
body:not(.in-project) .tabs { display: none; }
body:not(.in-project) .auth-only { display: none !important; }

/* 师资表：紧凑模式 + 冻结前三列 + 冻结双层表头 */
.teacher-table { border-collapse: separate; border-spacing: 0; }
.teacher-table tbody tr { background: var(--card-bg); }
.teacher-table th, .teacher-table td { padding: 6px 8px; }
.teacher-cell { min-width: 108px; font-size: 12px; }
.teacher-cell .cls { padding: 2px 0; }
.teacher-rush-summary { font-size: 11px; }

/* 冻结前三列（老师/班量/学科组） */
.teacher-table tbody td:nth-child(-n+3) {
  position: sticky;
  background: inherit;
  z-index: 2;
  box-shadow: 1px 0 0 var(--border);
}
.teacher-table tbody td:nth-child(1) { left: 0; min-width: 92px; max-width: 92px; }
.teacher-table tbody td:nth-child(2) { left: 92px; min-width: 42px; }
.teacher-table tbody td:nth-child(3) { left: 134px; min-width: 60px; }
.teacher-head-group > th:nth-child(-n+3) {
  position: sticky;
  left: 0;
  z-index: 7;
  background: var(--card-bg);
  box-shadow: 1px 0 0 var(--border);
}
.teacher-head-group > th:nth-child(2) { left: 92px; }
.teacher-head-group > th:nth-child(3) { left: 134px; }

/* 冻结双层表头 */
.teacher-table thead th { position: sticky; }
.teacher-head-group th { top: 0; z-index: 6; background: var(--card-bg); }
.teacher-head-slots th { top: 33px; z-index: 5; background: var(--card-bg); }
.teacher-head-group .th-period { top: 0; z-index: 6; }

/* ===== 右上角用户菜单 ===== */
.user-menu-wrap { position: relative; flex-shrink: 0; }
.user-menu-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 12px 5px 6px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--card-bg);
  color: var(--text);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: box-shadow .2s ease, border-color .2s ease;
}
.user-menu-btn:hover { box-shadow: var(--shadow-sm); border-color: var(--primary); }
.user-menu-avatar {
  width: 26px; height: 26px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  font-size: 13px;
  display: flex; align-items: center; justify-content: center;
}
.user-menu-caret { color: var(--text-secondary); font-size: 11px; }
.user-menu {
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  width: 210px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-hover);
  padding: 6px;
  z-index: 300;
  animation: pop-in .18s cubic-bezier(.22,.72,.28,1) both;
}
.user-menu-project {
  font-size: 12px;
  color: var(--text-secondary);
  padding: 8px 10px 6px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 4px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.user-menu-item {
  display: block;
  width: 100%;
  text-align: left;
  border: none;
  background: transparent;
  color: var(--text);
  font-size: 13px;
  padding: 9px 10px;
  border-radius: 8px;
  cursor: pointer;
  transition: background .15s ease;
}
.user-menu-item:hover { background: var(--surface); }
.user-menu-danger { color: var(--danger); }

/* 设置弹窗 */
.settings-section { margin-bottom: 18px; }
.settings-section:last-child { margin-bottom: 0; }
.settings-label { font-size: 13px; font-weight: 700; margin-bottom: 8px; }