/* ==========================================
   后台管理系统样式
   ========================================== */

:root {
    --admin-primary: #1a1a2e;
    --admin-accent: #c4a35a;
    --admin-sidebar-w: 240px;
    --admin-header-h: 60px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 14px; }
body { font-family: 'Noto Sans SC', 'Microsoft YaHei', sans-serif; background: #f5f5f5; color: #333; }

/* 侧边栏 */
.admin-sidebar {
    position: fixed; left: 0; top: 0; bottom: 0;
    width: var(--admin-sidebar-w); background: var(--admin-primary);
    z-index: 100; overflow-y: auto;
}

.sidebar-brand {
    padding: 20px; border-bottom: 1px solid rgba(255,255,255,0.1);
}

.sidebar-brand h2 {
    color: var(--admin-accent); font-size: 16px;
    font-family: 'Noto Serif SC', serif; letter-spacing: 2px;
    margin-bottom: 4px;
}

.sidebar-brand small { color: rgba(255,255,255,0.4); font-size: 11px; }

.sidebar-nav { padding: 10px 0; }

.sidebar-nav a {
    display: flex; align-items: center; gap: 12px;
    padding: 12px 24px; color: rgba(255,255,255,0.65);
    font-size: 14px; transition: all 0.2s;
}

.sidebar-nav a:hover { color: #fff; background: rgba(255,255,255,0.05); }

.sidebar-nav a.active {
    color: var(--admin-accent); background: rgba(196,163,90,0.1);
    border-right: 3px solid var(--admin-accent);
}

.sidebar-nav .nav-icon { width: 20px; text-align: center; font-style: normal; }

/* 主内容区 */
.admin-main {
    margin-left: var(--admin-sidebar-w);
    min-height: 100vh;
}

.admin-header {
    height: var(--admin-header-h); background: #fff;
    border-bottom: 1px solid #e5e5e5; display: flex;
    align-items: center; justify-content: space-between;
    padding: 0 30px; position: sticky; top: 0; z-index: 50;
}

.admin-header h1 { font-size: 18px; font-weight: 600; }

.admin-user { display: flex; align-items: center; gap: 12px; }
.admin-user span { color: #666; font-size: 13px; }
.admin-user a { color: #e74c3c; font-size: 13px; }

.admin-body { padding: 30px; }

/* 卡片 */
.admin-card {
    background: #fff; border-radius: 8px;
    box-shadow: 0 1px 4px rgba(0,0,0,0.08);
    padding: 24px; margin-bottom: 20px;
}

.admin-card h3 {
    font-size: 16px; font-weight: 600; margin-bottom: 16px;
    padding-bottom: 12px; border-bottom: 1px solid #f0f0f0;
}

/* 统计卡片 */
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-bottom: 30px; }

.stat-card {
    background: #fff; border-radius: 8px; padding: 24px;
    box-shadow: 0 1px 4px rgba(0,0,0,0.08);
}

.stat-card .stat-number {
    font-size: 32px; font-weight: 700; color: var(--admin-primary);
}

.stat-card .stat-label { font-size: 13px; color: #999; margin-top: 4px; }

.stat-card.accent .stat-number { color: var(--admin-accent); }

/* 表格 */
.admin-table { width: 100%; border-collapse: collapse; }

.admin-table th {
    text-align: left; padding: 12px 16px;
    background: #f8f8f8; font-weight: 600; font-size: 13px;
    color: #666; border-bottom: 2px solid #e5e5e5;
}

.admin-table td {
    padding: 12px 16px; border-bottom: 1px solid #f0f0f0;
    font-size: 13px; vertical-align: middle;
}

.admin-table tr:hover td { background: #fafafa; }

.admin-table img.thumb {
    width: 60px; height: 40px; object-fit: cover;
    border-radius: 4px;
}

/* 按钮 */
.btn {
    display: inline-flex; align-items: center; gap: 4px;
    padding: 8px 16px; border-radius: 4px; border: 1px solid #ddd;
    font-size: 13px; cursor: pointer; transition: all 0.2s;
    text-decoration: none; background: #fff; color: #333;
}

.btn:hover { border-color: #999; }

.btn-primary { background: var(--admin-accent); color: var(--admin-primary); border-color: var(--admin-accent); font-weight: 600; }
.btn-primary:hover { background: #b3952e; }

.btn-sm { padding: 4px 10px; font-size: 12px; }

.btn-danger { color: #e74c3c; border-color: #e74c3c; }
.btn-danger:hover { background: #e74c3c; color: #fff; }

.btn-success { color: #27ae60; border-color: #27ae60; }
.btn-success:hover { background: #27ae60; color: #fff; }

/* 表单 */
.admin-form .form-group { margin-bottom: 20px; }

.admin-form label {
    display: block; font-weight: 600; margin-bottom: 6px;
    font-size: 13px; color: #555;
}

.admin-form input[type="text"],
.admin-form input[type="email"],
.admin-form input[type="tel"],
.admin-form input[type="number"],
.admin-form input[type="date"],
.admin-form input[type="password"],
.admin-form input[type="url"],
.admin-form select,
.admin-form textarea {
    width: 100%; padding: 10px 14px; border: 1px solid #ddd;
    border-radius: 4px; font-size: 14px; font-family: inherit;
    transition: border-color 0.2s;
}

.admin-form input:focus,
.admin-form select:focus,
.admin-form textarea:focus {
    outline: none; border-color: var(--admin-accent);
    box-shadow: 0 0 0 3px rgba(196,163,90,0.1);
}

.admin-form textarea { min-height: 150px; resize: vertical; }

.admin-form .form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }

/* 状态标签 */
.badge {
    display: inline-block; padding: 3px 10px; border-radius: 20px;
    font-size: 12px; font-weight: 500;
}

.badge-success { background: #d4edda; color: #155724; }
.badge-warning { background: #fff3cd; color: #856404; }
.badge-danger { background: #f8d7da; color: #721c24; }
.badge-info { background: #d1ecf1; color: #0c5460; }
.badge-secondary { background: #e2e3e5; color: #383d41; }

/* 工具栏 */
.toolbar {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 20px;
}

/* 登录页 */
.login-page {
    min-height: 100vh; display: flex; align-items: center; justify-content: center;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
}

.login-box {
    background: #fff; border-radius: 12px; padding: 40px;
    width: 400px; max-width: 90%; box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

.login-box h2 {
    font-family: 'Noto Serif SC', serif; text-align: center;
    font-size: 20px; margin-bottom: 8px; color: var(--admin-primary);
    letter-spacing: 2px;
}

.login-box .login-subtitle {
    text-align: center; color: #999; font-size: 13px; margin-bottom: 30px;
}

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

.login-box input {
    width: 100%; padding: 12px 16px; border: 1px solid #ddd;
    border-radius: 6px; font-size: 14px;
}

.login-box input:focus {
    outline: none; border-color: var(--admin-accent);
}

.login-box .btn-login {
    width: 100%; padding: 12px; background: var(--admin-accent);
    color: var(--admin-primary); border: none; border-radius: 6px;
    font-size: 15px; font-weight: 600; cursor: pointer;
    letter-spacing: 2px; transition: all 0.2s;
}

.login-box .btn-login:hover { background: #b3952e; }

.alert { padding: 12px 16px; border-radius: 4px; margin-bottom: 16px; font-size: 13px; }
.alert-error { background: #f8d7da; color: #721c24; }
.alert-success { background: #d4edda; color: #155724; }

/* 分页 */
.admin-pagination { display: flex; gap: 6px; margin-top: 20px; justify-content: center; }
.admin-pagination a, .admin-pagination span {
    padding: 6px 12px; border: 1px solid #ddd; border-radius: 4px;
    font-size: 13px;
}
.admin-pagination a:hover { border-color: var(--admin-accent); }
.admin-pagination .current { background: var(--admin-accent); color: var(--admin-primary); border-color: var(--admin-accent); font-weight: 600; }

@media (max-width: 768px) {
    .admin-sidebar { display: none; }
    .admin-main { margin-left: 0; }
    .stat-grid { grid-template-columns: repeat(2, 1fr); }
    .admin-form .form-row { grid-template-columns: 1fr; }
}