/* 管理后台样式 */
:root {
  --admin-primary: #1a472a;
  --admin-sidebar: #1e3d2a;
  --admin-accent: #4a9c5e;
  --admin-bg: #f0f2f5;
  --admin-card: #fff;
  --admin-text: #2c2c2c;
  --admin-muted: #6b7280;
  --admin-border: #e5e7eb;
  --admin-radius: 10px;
  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

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

body.admin-page {
  font-family: var(--font-sans);
  background: var(--admin-bg);
  color: var(--admin-text);
  min-height: 100vh;
}

/* 登录页 */
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--admin-sidebar) 0%, var(--admin-primary) 100%);
  padding: 2rem;
}

.login-box {
  background: var(--admin-card);
  width: 100%;
  max-width: 400px;
  padding: 2.5rem;
  border-radius: 16px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.2);
}

.login-box h1 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
  color: var(--admin-primary);
}
.login-box .sub {
  color: var(--admin-muted);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}

.login-box label {
  display: block;
  font-weight: 500;
  margin-bottom: 0.4rem;
  font-size: 0.9rem;
}
.login-box input {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 2px solid var(--admin-border);
  border-radius: 8px;
  font-size: 1rem;
  margin-bottom: 1rem;
}
.login-box input:focus {
  outline: none;
  border-color: var(--admin-accent);
}

.login-box .btn {
  width: 100%;
  padding: 0.85rem;
  background: var(--admin-primary);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}
.login-box .btn:hover { background: var(--admin-accent); }

.login-box .error {
  background: #fef2f2;
  color: #b91c1c;
  padding: 0.6rem;
  border-radius: 8px;
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

/* 后台布局 */
.admin-layout {
  display: flex;
  min-height: 100vh;
}

.admin-sidebar {
  width: 240px;
  background: var(--admin-sidebar);
  color: #e5e7eb;
  padding: 1.5rem 0;
  flex-shrink: 0;
}

.admin-sidebar .brand {
  padding: 0 1.5rem 1rem;
  font-weight: 700;
  font-size: 1.1rem;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  margin-bottom: 1rem;
}

.admin-sidebar a {
  display: block;
  padding: 0.65rem 1.5rem;
  color: rgba(255,255,255,0.85);
  text-decoration: none;
  transition: background 0.2s, color 0.2s;
}
.admin-sidebar a:hover,
.admin-sidebar a.active {
  background: rgba(255,255,255,0.1);
  color: #fff;
}

.admin-main {
  flex: 1;
  padding: 1.5rem 2rem;
  overflow: auto;
}

.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 1rem;
}
.admin-header h1 { font-size: 1.4rem; color: var(--admin-text); }
.admin-header .logout {
  padding: 0.5rem 1rem;
  background: var(--admin-card);
  border: 1px solid var(--admin-border);
  border-radius: 8px;
  color: var(--admin-muted);
  text-decoration: none;
  font-size: 0.9rem;
}
.admin-header .logout:hover { background: #fef2f2; color: #b91c1c; }

/* 仪表盘卡片 */
.dash-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.dash-card {
  background: var(--admin-card);
  border-radius: var(--admin-radius);
  padding: 1.25rem;
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
  border: 1px solid var(--admin-border);
}
.dash-card .title {
  font-size: 0.9rem;
  color: var(--admin-muted);
  margin-bottom: 0.5rem;
}
.dash-card .value {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--admin-primary);
}
.dash-card .extra {
  font-size: 0.85rem;
  color: var(--admin-muted);
  margin-top: 0.25rem;
}

/* 表格区块 */
.panel {
  background: var(--admin-card);
  border-radius: var(--admin-radius);
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
  border: 1px solid var(--admin-border);
  margin-bottom: 1.5rem;
}
.panel-title {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--admin-border);
  font-weight: 600;
  font-size: 1rem;
}
.panel-body {
  padding: 1rem 1.25rem;
  overflow-x: auto;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
.admin-table th,
.admin-table td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--admin-border);
}
.admin-table th {
  background: #f9fafb;
  font-weight: 600;
  color: var(--admin-muted);
}
.admin-table tr:hover td { background: #f9fafb; }

.badge {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: 6px;
  font-size: 0.8rem;
}
.badge-success { background: #d1fae5; color: #065f46; }
.badge-warning { background: #fef3c7; color: #92400e; }
.badge-info { background: #dbeafe; color: #1e40af; }

@media (max-width: 768px) {
  .admin-sidebar { width: 100%; }
  .admin-layout { flex-direction: column; }
  .dash-cards { grid-template-columns: 1fr 1fr; }
}