/* ============================================================
   机构小助手 - 管理后台样式
   风格：干净、留白、专业、低饱和
   ============================================================ */

:root {
  --bg: #f7f7f9;
  --sidebar-bg: #1a1d23;
  --white: #ffffff;
  --border: #e8e8ed;
  --text: #1d1d2a;
  --text-secondary: #6b6b7c;
  --text-muted: #9b9bae;
  --primary: #4a6fa5;
  --primary-light: #eef2f8;
  --success: #3c8c6c;
  --success-light: #eaf6f0;
  --warning: #b8934a;
  --warning-light: #fdf6ea;
  --danger: #c4554d;
  --danger-light: #fdf0ef;
  --info: #5b7fa5;
  --info-light: #edf3f8;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ============================================================
   登录页
   ============================================================ */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #f0f2f7 0%, #e8ecf2 100%);
}

.login-card {
  background: var(--white);
  border-radius: 16px;
  padding: 48px 40px;
  width: 400px;
  max-width: 90vw;
  box-shadow: var(--shadow-md);
}

.login-header {
  text-align: center;
  margin-bottom: 32px;
}

.login-header h1 {
  font-size: 24px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.5px;
}

.login-header p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: 4px;
}

.login-form .form-group {
  margin-bottom: 20px;
}

.login-form label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.login-form input {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
  color: var(--text);
  background: var(--bg);
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
}

.login-form input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}

.login-error {
  color: var(--danger);
  font-size: 13px;
  margin-top: 8px;
  min-height: 20px;
}

.login-hint {
  text-align: center;
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 24px;
}

/* ============================================================
   管理后台布局
   ============================================================ */
.admin-app {
  display: flex;
  min-height: 100vh;
}

/* 侧边栏 */
.sidebar {
  width: 220px;
  background: var(--sidebar-bg);
  color: #d0d0dc;
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 100;
  overflow-y: auto;
}

.sidebar-header {
  padding: 24px 20px 16px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.sidebar-header h2 {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
}

.sidebar-subtitle {
  font-size: 12px;
  color: #8a8a9e;
}

.sidebar-nav {
  flex: 1;
  padding: 12px 0;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  font-size: 13px;
  color: #b0b0c0;
  text-decoration: none;
  transition: all 0.15s;
  border-left: 3px solid transparent;
  cursor: pointer;
}

.nav-item:hover {
  background: rgba(255,255,255,0.06);
  color: #e0e0ec;
}

.nav-item.active {
  background: rgba(74,111,165,0.2);
  color: #8db5e6;
  border-left-color: #6a9fd8;
}

.nav-icon { font-size: 16px; width: 24px; text-align: center; }

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid rgba(255,255,255,0.08);
  font-size: 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #8a8a9e;
}

/* 主内容区 */
.main-content {
  flex: 1;
  margin-left: 220px;
  padding: 32px;
  min-height: 100vh;
}

/* ============================================================
   通用组件
   ============================================================ */
.page-header {
  margin-bottom: 28px;
}

.page-header h2 {
  font-size: 22px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.3px;
}

.page-header p {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 4px;
}

/* 统计卡片 */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}

.stat-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.stat-card .stat-label {
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 8px;
  font-weight: 500;
}

.stat-card .stat-value {
  font-size: 28px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -1px;
}

.stat-card.accent .stat-value { color: var(--primary); }
.stat-card.success .stat-value { color: var(--success); }
.stat-card.warning .stat-value { color: var(--warning); }

/* 卡片 */
.card {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  margin-bottom: 20px;
  overflow: hidden;
}

.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.card-header h3 {
  font-size: 15px;
  font-weight: 600;
}

.card-body {
  padding: 20px;
}

/* 表格 */
.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

th {
  text-align: left;
  padding: 10px 14px;
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
}

tr:hover td {
  background: #fafafe;
}

/* 标签 */
.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 100px;
  font-size: 11px;
  font-weight: 500;
  white-space: nowrap;
}

.badge-default { background: #f0f0f4; color: #6b6b7c; }
.badge-primary { background: var(--primary-light); color: var(--primary); }
.badge-success { background: var(--success-light); color: var(--success); }
.badge-warning { background: var(--warning-light); color: var(--warning); }
.badge-danger  { background: var(--danger-light); color: var(--danger); }
.badge-info    { background: var(--info-light); color: var(--info); }

/* 按钮 */
button {
  cursor: pointer;
  font-family: inherit;
  font-size: 13px;
  border: none;
  outline: none;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  padding: 8px 20px;
  border-radius: var(--radius);
  font-weight: 500;
  transition: opacity 0.2s;
}

.btn-primary:hover { opacity: 0.9; }

.btn-block {
  display: block;
  width: 100%;
  padding: 11px;
  font-size: 15px;
}

.btn-text {
  background: none;
  color: #8a8a9e;
  font-size: 12px;
  padding: 4px 8px;
}

.btn-text:hover { color: #e0e0ec; }

.btn-sm {
  padding: 4px 12px;
  font-size: 12px;
  border-radius: 4px;
}

.btn-success { background: var(--success); color: #fff; }
.btn-danger  { background: var(--danger); color: #fff; }
.btn-outline {
  background: var(--white);
  color: var(--primary);
  border: 1px solid var(--primary);
}

/* 搜索框 */
.search-bar {
  display: flex;
  gap: 10px;
  margin-bottom: 16px;
}

.search-bar input {
  flex: 1;
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 13px;
  outline: none;
  background: var(--bg);
}

.search-bar input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px var(--primary-light);
}

.search-bar select {
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 13px;
  background: var(--white);
  outline: none;
}

/* 分页 */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin-top: 20px;
  font-size: 13px;
  color: var(--text-secondary);
}

.pagination button {
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--white);
  font-size: 13px;
  transition: all 0.15s;
}

.pagination button:hover:not(:disabled) {
  background: var(--primary-light);
  border-color: var(--primary);
}

.pagination button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* 模态框 */
.modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
}

.modal {
  background: var(--white);
  border-radius: 12px;
  padding: 32px;
  width: 480px;
  max-width: 90vw;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0,0,0,0.15);
}

.modal h3 {
  font-size: 18px;
  margin-bottom: 20px;
}

.modal .form-group {
  margin-bottom: 16px;
}

.modal label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.modal input, .modal select, .modal textarea {
  width: 100%;
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 13px;
  font-family: inherit;
  outline: none;
  background: var(--bg);
}

.modal textarea { min-height: 80px; resize: vertical; }

.modal-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  margin-top: 24px;
}

/* 空状态 */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}

.empty-state .empty-icon {
  font-size: 48px;
  margin-bottom: 12px;
}

.empty-state p {
  font-size: 14px;
}

/* 加载 */
.loading {
  text-align: center;
  padding: 40px;
  color: var(--text-muted);
  font-size: 14px;
}

/* 柱状图 */
.bar-chart {
  padding: 4px 0;
}

.bar-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.bar-label {
  width: 52px;
  font-size: 12px;
  color: var(--text-secondary);
  text-align: right;
  flex-shrink: 0;
}

.bar-track {
  flex: 1;
  height: 18px;
  background: var(--bg);
  border-radius: 4px;
  overflow: hidden;
}

.bar-fill {
  height: 100%;
  border-radius: 4px;
  transition: width 0.6s ease;
  min-width: 2px;
}

.bar-val {
  width: 30px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text);
  flex-shrink: 0;
}

/* 响应式 */
@media (max-width: 768px) {
  .sidebar { width: 180px; }
  .main-content { margin-left: 180px; padding: 20px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}
.stat-card.danger .stat-value { color: var(--danger); }

.page-header-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
}

.text-link {
  margin-top: 10px;
  padding: 0;
  color: var(--danger);
  background: transparent;
  font-weight: 600;
}

.action-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.action-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px;
  text-align: left;
  background: #f7f9fc;
  border: 1px solid var(--border);
  border-radius: 12px;
}

.action-card strong { font-size: 16px; color: var(--text); }
.action-card span { color: var(--text-secondary); line-height: 1.6; }
.action-card.risk { background: var(--danger-light); border-color: #f3d5d2; }

.risk-list { display: grid; gap: 14px; }
.risk-card {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 20px;
  background: var(--white);
  border: 1px solid var(--border);
  border-left: 4px solid var(--warning);
  border-radius: 12px;
  box-shadow: var(--shadow);
}
.risk-card.high { border-left-color: var(--danger); }
.risk-card.low { border-left-color: var(--info); }
.risk-title { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; }
.risk-title span:last-child { color: var(--text-secondary); font-size: 13px; }
.risk-card p { color: var(--text); font-size: 14px; }
.metric-line { color: var(--text-muted); font-size: 12px; margin-top: 8px; }

.row-actions { display: flex; align-items: center; gap: 7px; white-space: nowrap; }
.btn-outline, .btn-danger, .btn-success {
  padding: 7px 12px;
  border-radius: 7px;
  font-weight: 500;
}
.btn-outline { color: var(--primary); background: var(--primary-light); border: 1px solid #dce5f1; }
.btn-danger { color: var(--danger); background: var(--danger-light); border: 1px solid #f1d8d5; }
.btn-success { color: var(--success); background: var(--success-light); border: 1px solid #d1eadf; }
.status-select { min-width: 92px; padding: 6px 8px; border: 1px solid var(--border); border-radius: 7px; background: white; }

.export-card { max-width: 720px; }
.export-card h3 { margin-bottom: 8px; font-size: 18px; }
.export-card p { margin-bottom: 22px; color: var(--text-secondary); line-height: 1.8; }

.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 500;
  display: none;
  align-items: stretch;
  justify-content: flex-end;
  background: rgba(18, 21, 28, 0.35);
}
.modal-backdrop.show { display: flex; }
.detail-modal {
  width: min(680px, 92vw);
  height: 100vh;
  overflow-y: auto;
  padding: 36px;
  background: var(--white);
  box-shadow: -12px 0 36px rgba(0,0,0,.12);
}
.detail-modal h2 { margin-bottom: 18px; font-size: 24px; }
.detail-modal h3 { margin: 26px 0 12px; font-size: 15px; }
.modal-close { float: right; color: var(--text-secondary); background: var(--bg); padding: 7px 12px; border-radius: 7px; }
.summary-strip { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
.summary-strip > span { padding: 6px 10px; color: var(--text-secondary); background: var(--bg); border-radius: 7px; font-size: 12px; }
.detail-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.detail-grid div { padding: 12px; background: var(--bg); border-radius: 8px; }
.detail-grid span { display: block; margin-bottom: 4px; color: var(--text-muted); font-size: 11px; }
.detail-grid strong { display: block; overflow-wrap: anywhere; font-size: 13px; }
.json-preview { max-height: 420px; overflow: auto; padding: 16px; color: #dce5f1; background: #1c222b; border-radius: 10px; font-size: 12px; white-space: pre-wrap; }
.note { margin-bottom: 10px; padding: 12px; background: var(--bg); border-radius: 8px; }
.note span { margin-left: 10px; color: var(--text-muted); font-size: 11px; }
.note p { margin-top: 5px; }
.today-mark,.card-header>span { color: var(--text-muted); font-size: 12px; }
.daily-grid { display:grid;grid-template-columns:repeat(5,1fr);gap:12px }
.daily-grid div { padding:16px;border-radius:10px;background:var(--primary-light);text-align:center }
.daily-grid strong { display:block;font-size:25px;color:var(--primary) }
.daily-grid span { font-size:12px;color:var(--text-secondary) }
.filter-panel,.batch-bar { display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:14px 16px;margin-bottom:14px;background:#fff;border:1px solid var(--border);border-radius:10px }
.filter-panel input,.filter-panel select,.batch-bar select { min-height:36px;padding:7px 10px;border:1px solid var(--border);border-radius:7px;background:#fff }
.filter-panel input { min-width:260px }
.batch-bar { background:var(--primary-light);border-color:#dce5f1 }
.batch-bar span { color:var(--text-secondary);font-size:12px;margin-right:auto }
.subtle { color:var(--text-muted);font-size:11px;margin-top:3px }
.feedback-content { max-width:460px;line-height:1.65 }
.admin-page-preview { background:#f3f1ff;padding:16px;border-radius:16px }
.admin-preview-hero { position:relative;min-height:220px;overflow:hidden;border-radius:14px;color:#fff;background:linear-gradient(135deg,#ff8a00,#7939ff 55%,#002fa7);display:flex;align-items:flex-end;padding:24px }
.admin-preview-hero img { position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.45 }
.admin-preview-hero div { position:relative;z-index:1 }.admin-preview-hero h2 { margin:5px 0;font-size:28px }
.admin-page-preview section { margin-top:12px;padding:18px;border-radius:12px;background:#fff }
.admin-page-preview section h4 { margin-bottom:8px;font-size:15px }.admin-page-preview section p{white-space:pre-line;color:var(--text-secondary)}
.admin-teacher { display:flex;gap:12px;margin-top:10px }.admin-teacher img{width:64px;height:76px;object-fit:cover;border-radius:9px}
.admin-gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.admin-gallery img{width:100%;height:110px;object-fit:cover;border-radius:8px}
.admin-page-preview .intent-preview{border-top:4px solid #7939ff}
.pagination{display:flex;align-items:center;justify-content:center;gap:14px;margin:18px 0}.pagination span{color:var(--text-secondary);font-size:12px}.pagination button:disabled{opacity:.35;cursor:not-allowed}
.archive-logo{display:block;width:46px;height:46px;object-fit:cover;border-radius:12px;background:var(--bg)}.empty-logo{display:grid;place-items:center;color:var(--text-muted);font-size:11px}.snapshot-preview{max-height:260px;overflow:auto;margin-top:10px;padding:12px;border-radius:8px;background:#1c222b;color:#dce5f1;font-size:11px;white-space:pre-wrap}

@media (max-width: 900px) {
  .action-grid { grid-template-columns: 1fr; }
  .risk-card { flex-direction: column; }
  .daily-grid { grid-template-columns:repeat(2,1fr) }
}