/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: #f5f5f5;
    color: #333;
}

.hidden {
    display: none !important;
}

/* 登录页面 */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-box {
    background: white;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
    width: 100%;
    max-width: 400px;
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-header h1 {
    font-size: 24px;
    color: #333;
    margin-bottom: 8px;
}

.login-header p {
    color: #999;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #555;
}

.form-group input {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 14px;
    transition: border-color 0.3s;
}

.form-group input:focus {
    outline: none;
    border-color: #667eea;
}

.btn-login {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    cursor: pointer;
    transition: opacity 0.3s;
}

.btn-login:hover {
    opacity: 0.9;
}

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

/* 侧边栏 */
.sidebar {
    width: 220px;
    background: #2b3137;
    color: white;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
}

.logo {
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: bold;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.logo i {
    font-size: 24px;
    color: #07c160;
}

.menu {
    padding: 15px 0;
}

.menu-item {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    transition: all 0.3s;
    gap: 10px;
}

.menu-item:hover,
.menu-item.active {
    background: rgba(255,255,255,0.1);
    color: white;
}

.menu-item i {
    width: 20px;
    text-align: center;
}

/* 主内容区 */
.main-content {
    flex: 1;
    margin-left: 220px;
    min-height: 100vh;
}

/* 顶部栏 */
.top-bar {
    background: white;
    padding: 15px 30px;
    display: flex;
    align-items: center;
    gap: 20px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 100;
}

.menu-toggle {
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    color: #666;
}

.breadcrumb {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 10px;
    color: #666;
}

.breadcrumb i {
    font-size: 12px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 15px;
}

.btn-logout {
    background: none;
    border: none;
    color: #999;
    cursor: pointer;
    font-size: 18px;
}

.btn-logout:hover {
    color: #666;
}

/* 页面内容 */
.page-content {
    padding: 30px;
}

.page {
    display: none;
}

.page.active {
    display: block;
}

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

.stat-card {
    background: white;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
    display: flex;
    align-items: center;
    gap: 15px;
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: white;
}

.stat-icon.blue { background: linear-gradient(135deg, #667eea, #764ba2); }
.stat-icon.green { background: linear-gradient(135deg, #11998e, #38ef7d); }
.stat-icon.orange { background: linear-gradient(135deg, #f093fb, #f5576c); }
.stat-icon.purple { background: linear-gradient(135deg, #4facfe, #00f2fe); }

.stat-info h3 {
    font-size: 28px;
    margin-bottom: 5px;
}

.stat-info p {
    color: #999;
    font-size: 14px;
}

/* 仪表盘分区 */
.dashboard-sections {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 20px;
}

.section {
    background: white;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.section h3 {
    margin-bottom: 20px;
    font-size: 18px;
}

.todo-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.todo-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px;
    background: #f8f9fa;
    border-radius: 8px;
}

.badge {
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: bold;
    color: white;
}

.badge-warning { background: #ff9500; }
.badge-danger { background: #ff3b30; }
.badge-info { background: #007aff; }

.chart-placeholder {
    height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f8f9fa;
    border-radius: 8px;
    color: #999;
}

/* 页面头部 */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
}

.page-header h2 {
    font-size: 24px;
}

.filters {
    display: flex;
    gap: 10px;
    align-items: center;
}

.filters select,
.filters input {
    padding: 8px 12px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 14px;
}

.btn-primary {
    padding: 8px 20px;
    background: #07c160;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
}

.btn-primary:hover {
    background: #06ad56;
}

/* 数据表格 */
.data-table {
    width: 100%;
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.data-table th,
.data-table td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid #f0f0f0;
}

.data-table th {
    background: #f8f9fa;
    font-weight: 600;
    color: #666;
}

.data-table tr:hover {
    background: #f8f9fa;
}

/* 状态标签 */
.status-badge {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
}

.status-pending { background: #fff3cd; color: #856404; }
.status-approved { background: #d4edda; color: #155724; }
.status-rejected { background: #f8d7da; color: #721c24; }

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    gap: 5px;
    margin-top: 20px;
}

.pagination button {
    padding: 8px 15px;
    border: 1px solid #ddd;
    background: white;
    cursor: pointer;
    border-radius: 6px;
}

.pagination button:hover,
.pagination button.active {
    background: #07c160;
    color: white;
    border-color: #07c160;
}

/* 响应式 */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s;
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .stats-cards {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .dashboard-sections {
        grid-template-columns: 1fr;
    }
}

/* ========== 意见反馈 ========== */
.feedback-stats {
    display: flex;
    gap: 20px;
    margin-top: 8px;
    color: #666;
    font-size: 14px;
}

.feedback-stats b {
    color: #333;
}

.feedback-card .fb-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 10px;
}

.feedback-card .fb-name {
    font-size: 16px;
    color: #333;
    font-weight: 600;
}

.feedback-card .fb-time {
    color: #999;
    font-size: 12px;
}

.feedback-card .fb-ratings {
    margin-bottom: 8px;
    display: flex;
    gap: 16px;
    font-size: 14px;
    color: #666;
}

.feedback-card .fb-field {
    margin-bottom: 6px;
    font-size: 13px;
    line-height: 1.6;
}

.feedback-card .fb-label {
    font-weight: bold;
    margin-right: 4px;
}

.feedback-card .fb-footer {
    color: #bbb;
    font-size: 11px;
    margin-top: 8px;
}