/* 后台管理样式 */
:root {
    --admin-primary: #2c3e50;
    --admin-accent: #CD6725;
    --admin-success: #27ae60;
    --admin-danger: #e74c3c;
    --admin-light: #ecf0f1;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", sans-serif; background: #f5f6fa; }
a { color: var(--admin-accent); }

/* Login */
.login-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, var(--admin-primary) 0%, #1a252f 100%); }
.login-container { background: #fff; padding: 40px; border-radius: 10px; width: 100%; max-width: 380px; box-shadow: 0 10px 40px rgba(0,0,0,0.2); }
.login-container h1 { text-align: center; color: var(--admin-primary); margin-bottom: 5px; }
.login-subtitle { text-align: center; color: #888; margin-bottom: 30px; font-size: 14px; }
.alert { padding: 12px; border-radius: 5px; margin-bottom: 20px; font-size: 14px; }
.alert-error { background: #fee; color: var(--admin-danger); }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; margin-bottom: 6px; font-weight: 500; font-size: 14px; }
.form-group input { width: 100%; padding: 12px; border: 1px solid #ddd; border-radius: 5px; font-size: 14px; }
.btn { display: inline-block; padding: 10px 20px; background: var(--admin-accent); color: #fff; border: none; border-radius: 5px; cursor: pointer; text-decoration: none; font-size: 14px; }
.btn:hover { background: #b85a1f; color: #fff; }
.btn-primary { background: var(--admin-accent); }
.btn-small { padding: 5px 12px; font-size: 12px; }
.btn-danger { background: var(--admin-danger); }
.btn-block { width: 100%; padding: 12px; }
.login-hint { text-align: center; font-size: 12px; color: #999; margin-top: 15px; }
.back-link { display: block; text-align: center; margin-top: 20px; color: var(--admin-accent); }

/* Admin Layout */
.admin-layout { display: flex; min-height: 100vh; }
.admin-sidebar { width: 240px; background: var(--admin-primary); color: #fff; position: fixed; height: 100vh; overflow-y: auto; }
.sidebar-header { padding: 25px 20px; border-bottom: 1px solid rgba(255,255,255,0.1); }
.sidebar-header h2 { font-size: 18px; margin-bottom: 5px; }
.sidebar-label { font-size: 12px; opacity: 0.6; }
.sidebar-nav { padding: 15px 0; }
.sidebar-nav a { display: block; padding: 12px 20px; color: rgba(255,255,255,0.8); border-left: 3px solid transparent; }
.sidebar-nav a:hover, .sidebar-nav a.active { background: rgba(255,255,255,0.1); border-left-color: var(--admin-accent); color: #fff; }
.sidebar-nav a.logout { color: #e74c3c; margin-top: 20px; border-top: 1px solid rgba(255,255,255,0.1); }
.admin-main { flex: 1; margin-left: 240px; }
.admin-header { background: #fff; padding: 20px 30px; display: flex; justify-content: space-between; align-items: center; box-shadow: 0 2px 5px rgba(0,0,0,0.05); }
.admin-header h1 { font-size: 20px; color: var(--admin-primary); }
.admin-content { padding: 30px; }

/* Stats */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 20px; margin-bottom: 30px; }
.stat-card { background: #fff; padding: 25px; border-radius: 8px; box-shadow: 0 2px 10px rgba(0,0,0,0.05); }
.stat-card h3 { font-size: 14px; color: #888; margin-bottom: 10px; }
.stat-card .stat-number { font-size: 32px; color: var(--admin-primary); font-weight: 700; }
.stat-link a { color: var(--admin-accent); }

/* Actions */
.quick-links, .recent-posts { background: #fff; padding: 25px; border-radius: 8px; margin-bottom: 20px; box-shadow: 0 2px 10px rgba(0,0,0,0.05); }
.quick-links h2, .recent-posts h2 { margin-bottom: 20px; font-size: 16px; color: var(--admin-primary); }
.action-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 15px; }
.action-btn { display: block; padding: 20px; background: var(--admin-light); border-radius: 8px; text-align: center; color: var(--admin-primary); text-decoration: none; }
.action-btn:hover { background: var(--admin-accent); color: #fff; }

/* Tables */
.data-table { width: 100%; border-collapse: collapse; background: #fff; border-radius: 8px; overflow: hidden; box-shadow: 0 2px 10px rgba(0,0,0,0.05); }
.data-table th, .data-table td { padding: 12px 15px; text-align: left; border-bottom: 1px solid #eee; font-size: 14px; }
.data-table th { background: var(--admin-light); font-weight: 600; color: var(--admin-primary); }
.data-table tr:hover { background: #f8f9fa; }

/* Forms */
.admin-section { background: #fff; padding: 25px; border-radius: 8px; box-shadow: 0 2px 10px rgba(0,0,0,0.05); }
.section-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 25px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; margin-bottom: 6px; font-weight: 500; font-size: 14px; }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 10px 12px; border: 1px solid #ddd; border-radius: 5px; font-size: 14px; }
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: var(--admin-accent); }
.form-actions { margin-top: 25px; display: flex; gap: 10px; }
.help-text { font-size: 12px; color: #888; margin-top: 5px; }
.search-form { display: flex; gap: 10px; margin-bottom: 20px; }
.search-form input { flex: 1; padding: 10px; border: 1px solid #ddd; border-radius: 5px; }
.pagination { text-align: center; padding: 20px; }
.pagination a, .pagination span { display: inline-block; padding: 8px 15px; margin: 0 5px; border: 1px solid #ddd; border-radius: 4px; color: var(--admin-primary); text-decoration: none; }
.pagination a:hover { background: var(--admin-accent); color: #fff; }

@media (max-width: 768px) {
    .admin-sidebar { width: 100%; position: relative; height: auto; }
    .admin-main { margin-left: 0; }
    .admin-layout { flex-direction: column; }
    .form-row { grid-template-columns: 1fr; }
}