/* ── 全局 ──────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --sidebar-w: 220px;
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --danger: #ef4444;
  --danger-hover: #dc2626;
  --success: #22c55e;
  --bg: #f1f5f9;
  --surface: #ffffff;
  --border: #e2e8f0;
  --text: #1e293b;
  --text-muted: #64748b;
  --sidebar-bg: #1e293b;
  --sidebar-text: #cbd5e1;
  --sidebar-active-bg: #4f46e5;
  --sidebar-active-text: #fff;
  --sidebar-hover-bg: #334155;
}

html, body {
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}

/* ── 登录页 ──────────────────────────────────────────────── */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #1e293b 0%, #4f46e5 100%);
}

.login-card {
  background: var(--surface);
  border-radius: 16px;
  padding: 48px 40px;
  width: 380px;
  box-shadow: 0 20px 60px rgba(0,0,0,.25);
  text-align: center;
}
.login-card .logo {
  width: 64px; height: 64px;
  background: var(--primary);
  border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 20px;
  font-size: 28px; color: #fff;
}
.login-card h1 { font-size: 20px; margin-bottom: 28px; color: var(--text); }
.login-card .error-msg {
  background: #fef2f2; color: var(--danger);
  border-radius: 8px; padding: 10px 14px;
  margin-bottom: 16px; font-size: 14px; text-align: left;
}

.form-group { text-align: left; margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; font-weight: 600; color: var(--text-muted); margin-bottom: 6px; }
.form-group input {
  width: 100%; padding: 10px 14px;
  border: 1.5px solid var(--border); border-radius: 8px;
  font-size: 15px; transition: border-color .2s;
}
.form-group input:focus { outline: none; border-color: var(--primary); }

.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 10px 20px; border: none; border-radius: 8px;
  font-size: 14px; font-weight: 600; cursor: pointer; transition: background .2s;
}
.btn-primary { background: var(--primary); color: #fff; width: 100%; justify-content: center; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-danger  { background: var(--danger); color: #fff; }
.btn-danger:hover { background: var(--danger-hover); }
.btn-success { background: var(--success); color: #fff; }
.btn-sm { padding: 6px 14px; font-size: 13px; }

/* ── 布局 ──────────────────────────────────────────────── */
.layout { display: flex; height: 100vh; overflow: hidden; }

/* 左侧导航 */
.sidebar {
  width: var(--sidebar-w);
  background: var(--sidebar-bg);
  display: flex; flex-direction: column;
  flex-shrink: 0;
}
.sidebar-logo {
  padding: 20px 16px;
  border-bottom: 1px solid rgba(255,255,255,.06);
  display: flex; align-items: center; gap: 10px;
}
.sidebar-logo-icon {
  width: 36px; height: 36px;
  background: var(--primary); border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; color: #fff; flex-shrink: 0;
}
.sidebar-logo-text { font-size: 15px; font-weight: 700; color: #fff; line-height: 1.2; }
.sidebar-logo-sub { font-size: 11px; color: var(--sidebar-text); }

.sidebar-nav { flex: 1; padding: 12px 8px; overflow-y: auto; }
.nav-section-label {
  font-size: 10px; text-transform: uppercase; letter-spacing: .08em;
  color: rgba(255,255,255,.3); padding: 12px 8px 4px;
}
.nav-link {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px; border-radius: 8px;
  color: var(--sidebar-text); text-decoration: none;
  font-size: 14px; font-weight: 500;
  transition: background .15s, color .15s;
  cursor: pointer;
}
.nav-link:hover { background: var(--sidebar-hover-bg); color: #fff; }
.nav-link.active { background: var(--sidebar-active-bg); color: var(--sidebar-active-text); }
.nav-link .nav-icon { font-size: 18px; flex-shrink: 0; }
.nav-link .nav-badge {
  margin-left: auto;
  background: rgba(255,255,255,.15);
  border-radius: 10px; padding: 2px 8px;
  font-size: 11px;
}

.sidebar-footer {
  padding: 12px 16px;
  border-top: 1px solid rgba(255,255,255,.06);
}
.sidebar-footer .user-info {
  display: flex; align-items: center; gap: 10px;
}
.sidebar-footer .user-avatar {
  width: 32px; height: 32px;
  background: var(--primary); border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 700; font-size: 13px;
}
.sidebar-footer .user-name { font-size: 13px; font-weight: 600; color: #fff; }
.sidebar-footer .user-role { font-size: 11px; color: var(--sidebar-text); }
.logout-btn {
  margin-top: 10px; width: 100%; justify-content: center;
  background: rgba(255,255,255,.06); color: var(--sidebar-text);
  border-radius: 8px; padding: 8px;
  font-size: 13px; font-weight: 500;
  text-decoration: none; display: flex; align-items: center; gap: 6px;
  cursor: pointer; transition: background .15s;
}
.logout-btn:hover { background: rgba(239,68,68,.2); color: var(--danger); }

/* 主内容区 */
.main {
  flex: 1; overflow-y: auto; display: flex; flex-direction: column;
}
.topbar {
  background: var(--surface); border-bottom: 1px solid var(--border);
  padding: 0 24px; height: 60px;
  display: flex; align-items: center; justify-content: space-between;
  flex-shrink: 0;
}
.topbar h2 { font-size: 17px; font-weight: 700; }
.topbar-meta { font-size: 13px; color: var(--text-muted); }

.page-content { padding: 24px; flex: 1; }

/* 卡片网格 */
.stats-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px; margin-bottom: 24px;
}
.stat-card {
  background: var(--surface); border-radius: 12px; padding: 20px;
  border: 1px solid var(--border);
  display: flex; align-items: flex-start; gap: 14px;
}
.stat-icon {
  width: 44px; height: 44px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; flex-shrink: 0;
}
.stat-icon.blue  { background: #eff6ff; color: #3b82f6; }
.stat-icon.green { background: #f0fdf4; color: #22c55e; }
.stat-icon.purple{ background: #f5f3ff; color: #8b5cf6; }
.stat-icon.red   { background: #fef2f2; color: #ef4444; }
.stat-icon.orange{ background: #fff7ed; color: #f97316; }
.stat-icon.teal  { background: #f0fdfa; color: #14b8a6; }
.stat-info .stat-value { font-size: 24px; font-weight: 800; line-height: 1; }
.stat-info .stat-label { font-size: 12px; color: var(--text-muted); margin-top: 4px; }

/* 表格 */
.card {
  background: var(--surface); border-radius: 12px;
  border: 1px solid var(--border);
  overflow: hidden; margin-bottom: 16px;
}
.card-header {
  padding: 16px 20px; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 10px;
}
.card-title { font-size: 15px; font-weight: 700; }
.card-body { padding: 20px; }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
thead th {
  background: var(--bg); padding: 10px 14px;
  text-align: left; font-size: 12px; font-weight: 600;
  color: var(--text-muted); text-transform: uppercase; letter-spacing: .04em;
  border-bottom: 1px solid var(--border);
}
tbody td {
  padding: 12px 14px; font-size: 13px; border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: #f8fafc; }
.td-mono { font-family: 'JetBrains Mono', monospace; font-size: 12px; }
.td-badge {
  display: inline-block; padding: 3px 10px; border-radius: 20px;
  font-size: 11px; font-weight: 600;
}
.badge-green { background: #dcfce7; color: #16a34a; }
.badge-red   { background: #fee2e2; color: #dc2626; }
.badge-blue  { background: #dbeafe; color: #2563eb; }
.badge-purple{ background: #ede9fe; color: #7c3aed; }
.badge-gray  { background: #f1f5f9; color: #64748b; }

/* 分页 */
.pagination { display: flex; align-items: center; gap: 4px; justify-content: flex-end; }
.pagination a, .pagination span {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 34px; height: 34px; padding: 0 8px;
  border-radius: 6px; font-size: 13px; font-weight: 500;
  text-decoration: none; color: var(--text);
  transition: background .15s;
}
.pagination a:hover { background: var(--bg); }
.pagination .active { background: var(--primary); color: #fff; }

/* 搜索框 */
.search-wrap { display: flex; gap: 8px; }
.search-wrap input {
  padding: 8px 14px; border: 1.5px solid var(--border);
  border-radius: 8px; font-size: 14px;
}
.search-wrap input:focus { outline: none; border-color: var(--primary); }

/* 消息提示 */
.alert {
  padding: 12px 16px; border-radius: 10px;
  margin-bottom: 16px; font-size: 14px;
  display: flex; align-items: center; gap: 8px;
}
.alert-success { background: #dcfce7; color: #16a34a; border: 1px solid #bbf7d0; }
.alert-error   { background: #fee2e2; color: #dc2626; border: 1px solid #fecaca; }
.alert-info    { background: #dbeafe; color: #2563eb; border: 1px solid #bfdbfe; }

/* 表单 */
.form-row { display: flex; gap: 12px; flex-wrap: wrap; }
.form-row .form-group { flex: 1; min-width: 140px; }
select {
  width: 100%; padding: 10px 14px;
  border: 1.5px solid var(--border); border-radius: 8px;
  font-size: 15px; background: #fff;
}
select:focus { outline: none; border-color: var(--primary); }
textarea {
  width: 100%; padding: 12px 14px;
  border: 1.5px solid var(--border); border-radius: 8px;
  font-size: 14px; resize: vertical; min-height: 120px;
  font-family: inherit;
}
textarea:focus { outline: none; border-color: var(--primary); }

/* 响应式 */
@media (max-width: 768px) {
  :root { --sidebar-w: 0px; }
  .sidebar { display: none; }
}