/* ===== 基础 ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
  --primary: #1d6ae5;
  --primary-dark: #1553b8;
  --primary-light: #e8f1fd;
  --danger: #dc3545;
  --danger-light: #fdeaea;
  --success: #1a9e63;
  --success-light: #e6f7ef;
  --warning: #e8930c;
  --warning-light: #fdf3e2;
  --bg: #f4f6fa;
  --card: #ffffff;
  --border: #e3e8ef;
  --text: #1f2733;
  --text-2: #5b6775;
  --text-3: #98a2b3;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(16, 24, 40, .06);
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
}
body { font-family: var(--font); background: var(--bg); color: var(--text); font-size: 14px; line-height: 1.6; }
.hidden { display: none !important; }
a { color: var(--primary); text-decoration: none; }
button { font-family: var(--font); cursor: pointer; }

/* ===== 按钮 ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 8px 16px; border-radius: 8px; border: 1px solid var(--border);
  background: #fff; color: var(--text); font-size: 14px; font-weight: 500;
  transition: all .15s; white-space: nowrap;
}
.btn:hover { border-color: var(--primary); color: var(--primary); }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); color: #fff; }
.btn-danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn-danger:hover { background: #b02a37; color: #fff; }
.btn-success { background: var(--success); border-color: var(--success); color: #fff; }
.btn-success:hover { background: #137a4b; color: #fff; }
.btn-ghost { background: transparent; border-color: transparent; color: var(--text-2); }
.btn-ghost:hover { background: rgba(0,0,0,.05); color: var(--text); }
.btn-sm { padding: 4px 10px; font-size: 13px; border-radius: 6px; }
.btn-block { width: 100%; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

/* ===== 认证页 ===== */
.auth-wrap {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(160deg, #eaf2fe 0%, #f4f6fa 55%, #eef7f2 100%);
  padding: 20px;
}
.auth-card {
  background: var(--card); border-radius: 16px; box-shadow: 0 8px 40px rgba(16,24,40,.10);
  width: 100%; max-width: 420px; padding: 36px 32px;
}
.auth-logo { display: flex; align-items: center; gap: 14px; margin-bottom: 26px; }
.logo-mark {
  width: 52px; height: 52px; border-radius: 14px; flex-shrink: 0;
  background: var(--primary); color: #fff; font-size: 26px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.logo-mark.small { width: 34px; height: 34px; font-size: 17px; border-radius: 9px; }
.auth-logo h1 { font-size: 18px; font-weight: 600; line-height: 1.4; }
.auth-logo p { font-size: 12px; color: var(--text-2); margin-top: 2px; }
.auth-form h2 { font-size: 20px; font-weight: 600; margin-bottom: 18px; }
.field { margin-bottom: 14px; }
.field label { display: block; font-size: 13px; color: var(--text-2); margin-bottom: 6px; font-weight: 500; }
.field input, .field select, .field textarea {
  width: 100%; padding: 9px 12px; border: 1px solid var(--border); border-radius: 8px;
  font-size: 14px; outline: none; transition: border .15s; background: #fff; color: var(--text);
}
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(29,106,229,.12); }
.form-msg { font-size: 13px; margin-bottom: 10px; min-height: 20px; }
.form-msg.error { color: var(--danger); }
.form-msg.success { color: var(--success); }
.auth-switch { text-align: center; margin-top: 14px; font-size: 13px; color: var(--text-2); }
.auth-tip { margin-top: 14px; padding: 10px 12px; background: var(--primary-light); border-radius: 8px; font-size: 12px; color: var(--primary-dark); }

/* ===== 主布局 ===== */
#main-view { display: flex; min-height: 100vh; }
.sidebar {
  width: 220px; background: #101a2c; color: #cdd6e4; flex-shrink: 0;
  display: flex; flex-direction: column; position: sticky; top: 0; height: 100vh;
  transition: transform .25s; z-index: 100;
}
.sidebar-brand { display: flex; align-items: center; gap: 10px; padding: 18px 16px; color: #fff; font-weight: 600; font-size: 15px; border-bottom: 1px solid rgba(255,255,255,.08); }
.side-nav { flex: 1; overflow-y: auto; padding: 12px 8px; }
.nav-group-title { font-size: 11px; color: #6b7a94; padding: 14px 12px 6px; letter-spacing: .5px; }
.nav-item {
  display: flex; align-items: center; gap: 10px; padding: 9px 12px; border-radius: 8px;
  color: #b6c2d6; font-size: 14px; margin-bottom: 2px; transition: all .15s;
}
.nav-item:hover { background: rgba(255,255,255,.08); color: #fff; }
.nav-item.active { background: var(--primary); color: #fff; }
.nav-icon { width: 20px; text-align: center; font-size: 15px; }
.sidebar-footer { padding: 12px; border-top: 1px solid rgba(255,255,255,.08); }
.user-chip { display: flex; align-items: center; gap: 10px; padding: 6px 4px 12px; }
.avatar {
  width: 36px; height: 36px; border-radius: 50%; background: var(--primary); color: #fff;
  display: flex; align-items: center; justify-content: center; font-weight: 600; font-size: 15px; flex-shrink: 0;
}
.user-meta { min-width: 0; }
.user-name { color: #fff; font-size: 14px; font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.user-role { font-size: 12px; color: #8fa0ba; }
.main { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.topbar {
  height: 56px; background: #fff; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 12px; padding: 0 20px; position: sticky; top: 0; z-index: 50;
}
.topbar h2 { font-size: 17px; font-weight: 600; }
.topbar-right { margin-left: auto; display: flex; align-items: center; gap: 8px; }
.icon-btn { background: none; border: none; font-size: 20px; color: var(--text-2); display: none; }
.content { padding: 20px; max-width: 1440px; width: 100%; margin: 0 auto; }

/* ===== 卡片 ===== */
.card {
  background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow);
  border: 1px solid var(--border); margin-bottom: 16px;
}
.card-header { padding: 14px 18px; border-bottom: 1px solid var(--border); display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.card-header h3 { font-size: 15px; font-weight: 600; flex: 1; }
.card-body { padding: 18px; }
.card-tools { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }

/* ===== 统计卡片 ===== */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 14px; margin-bottom: 16px; }
.stat-card {
  background: #fff; border-radius: var(--radius); border: 1px solid var(--border);
  padding: 16px 18px; box-shadow: var(--shadow); position: relative; overflow: hidden;
}
.stat-card .stat-label { font-size: 13px; color: var(--text-2); }
.stat-card .stat-value { font-size: 24px; font-weight: 700; margin-top: 4px; }
.stat-card .stat-sub { font-size: 12px; color: var(--text-3); margin-top: 2px; }
.stat-card .stat-bar { position: absolute; left: 0; top: 0; bottom: 0; width: 3px; }
.stat-card.blue .stat-bar { background: var(--primary); }
.stat-card.green .stat-bar { background: var(--success); }
.stat-card.orange .stat-bar { background: var(--warning); }
.stat-card.purple .stat-bar { background: #7c5cd6; }
.stat-card.red .stat-bar { background: var(--danger); }

/* ===== 筛选区 ===== */
.filter-bar {
  display: flex; align-items: flex-end; gap: 10px; flex-wrap: wrap; padding: 14px 18px;
  background: #fafbfd; border-bottom: 1px solid var(--border); border-radius: var(--radius) var(--radius) 0 0;
}
.filter-item { display: flex; flex-direction: column; gap: 4px; }
.filter-item label { font-size: 12px; color: var(--text-2); font-weight: 500; }
.filter-item input, .filter-item select {
  padding: 7px 10px; border: 1px solid var(--border); border-radius: 8px; font-size: 13px; outline: none; background: #fff; min-width: 130px;
}
.filter-item input:focus, .filter-item select:focus { border-color: var(--primary); }

/* ===== 表格 ===== */
.table-wrap { overflow-x: auto; }
table.data-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.data-table th {
  background: #f7f8fa; font-weight: 600; text-align: left; padding: 10px 12px;
  border-bottom: 1px solid var(--border); white-space: nowrap; position: sticky; top: 0;
}
.data-table td { padding: 9px 12px; border-bottom: 1px solid #eef1f5; white-space: nowrap; }
.data-table tr:hover td { background: #f8fafd; }
.data-table .num { text-align: right; font-variant-numeric: tabular-nums; }
.data-table th.num { text-align: right; }
.data-table .total-row td { background: var(--primary-light); font-weight: 600; }
.table-footer { padding: 12px 18px; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.pagination { display: flex; align-items: center; gap: 6px; margin-left: auto; }
.pagination button {
  min-width: 30px; height: 30px; border: 1px solid var(--border); background: #fff; border-radius: 6px; font-size: 13px;
}
.pagination button.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.pagination button:disabled { opacity: .4; cursor: not-allowed; }
.pagination span { font-size: 13px; color: var(--text-2); }

/* ===== 徽标 ===== */
.badge { display: inline-block; padding: 2px 8px; border-radius: 20px; font-size: 12px; font-weight: 500; }
.badge-green { background: var(--success-light); color: var(--success); }
.badge-red { background: var(--danger-light); color: var(--danger); }
.badge-orange { background: var(--warning-light); color: var(--warning); }
.badge-blue { background: var(--primary-light); color: var(--primary-dark); }
.badge-purple { background: #efe6ff; color: #7b3ff2; }
.badge-gray { background: #f0f1f4; color: var(--text-2); }

/* ===== 空状态 ===== */
.empty { text-align: center; padding: 40px 20px; color: var(--text-3); }
.empty .empty-icon { font-size: 40px; margin-bottom: 10px; }
.empty p { font-size: 13px; }

/* ===== 模态框 ===== */
.modal-mask {
  position: fixed; inset: 0; background: rgba(16,26,44,.5); z-index: 200;
  display: flex; align-items: center; justify-content: center; padding: 20px;
}
.modal {
  background: #fff; border-radius: 14px; width: 100%; max-width: 560px; max-height: 90vh;
  display: flex; flex-direction: column; box-shadow: 0 20px 60px rgba(0,0,0,.2);
}
.modal.wide { max-width: 860px; }
.modal-header { padding: 16px 20px; border-bottom: 1px solid var(--border); display: flex; align-items: center; }
.modal-header h3 { font-size: 16px; font-weight: 600; flex: 1; }
.modal-close { background: none; border: none; font-size: 20px; color: var(--text-3); }
.modal-body { padding: 20px; overflow-y: auto; }
.modal-footer { padding: 14px 20px; border-top: 1px solid var(--border); display: flex; justify-content: flex-end; gap: 10px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 14px; }
.form-grid .full { grid-column: 1 / -1; }

/* ===== 上传区 ===== */
.upload-zone {
  border: 2px dashed var(--border); border-radius: 10px; padding: 26px; text-align: center;
  color: var(--text-2); cursor: pointer; transition: all .2s; background: #fafbfd;
}
.upload-zone:hover, .upload-zone.dragover { border-color: var(--primary); background: var(--primary-light); color: var(--primary-dark); }
.upload-zone .upload-icon { font-size: 30px; margin-bottom: 8px; }
.upload-zone .upload-title { font-size: 14px; font-weight: 500; }
.upload-zone .upload-sub { font-size: 12px; margin-top: 4px; }
.preview-table { margin-top: 14px; max-height: 300px; overflow: auto; border: 1px solid var(--border); border-radius: 8px; }

/* ===== Toast ===== */
#toast-root { position: fixed; top: 20px; left: 50%; transform: translateX(-50%); z-index: 999; display: flex; flex-direction: column; gap: 8px; align-items: center; }
.toast {
  padding: 10px 18px; border-radius: 8px; color: #fff; font-size: 14px; box-shadow: 0 4px 16px rgba(0,0,0,.15);
  animation: slideDown .25s ease; display: flex; align-items: center; gap: 8px;
}
.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }
.toast.info { background: #344054; }
@keyframes slideDown { from { opacity: 0; transform: translateY(-10px); } to { opacity: 1; transform: translateY(0); } }

/* ===== 图表容器 ===== */
.chart-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.chart-box { min-height: 320px; }
@media (max-width: 900px) { .chart-row { grid-template-columns: 1fr; } }

/* ===== 统计页 ===== */
.dim-tabs { display: flex; gap: 4px; background: #f0f2f5; padding: 4px; border-radius: 8px; }
.dim-tab { padding: 6px 14px; border-radius: 6px; font-size: 13px; border: none; background: transparent; color: var(--text-2); font-weight: 500; }
.dim-tab.active { background: #fff; color: var(--primary); box-shadow: 0 1px 3px rgba(0,0,0,.1); }

/* ===== 响应式 ===== */
@media (max-width: 860px) {
  .sidebar { position: fixed; left: 0; top: 0; transform: translateX(-100%); box-shadow: 0 0 40px rgba(0,0,0,.3); }
  .sidebar.open { transform: translateX(0); }
  .icon-btn { display: block; }
  .content { padding: 14px; }
  .filter-bar { gap: 8px; }
  .filter-item { flex: 1 1 45%; }
  .form-grid { grid-template-columns: 1fr; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .stat-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .stat-card .stat-value { font-size: 19px; }
  .auth-card { padding: 26px 20px; }
}