/* ==================== 基础样式 ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #4a90e2;
    --success-color: #52c41a;
    --warning-color: #faad14;
    --danger-color: #f5222d;
    --info-color: #1890ff;
    --text-color: #333;
    --text-muted: #999;
    --border-color: #e8e8e8;
    --bg-color: #f5f5f5;
    --white: #fff;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
}

a {
    color: var(--primary-color);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* ==================== 容器 ==================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ==================== 按钮 ==================== */
.btn {
    display: inline-block;
    padding: 8px 16px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: var(--white);
    color: var(--text-color);
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
}

.btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    text-decoration: none;
}

.btn-primary {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: var(--white);
}

.btn-primary:hover {
    background: #3a7bc8;
    border-color: #3a7bc8;
    color: var(--white);
}

.btn-success {
    background: var(--success-color);
    border-color: var(--success-color);
    color: var(--white);
}

.btn-danger {
    background: var(--danger-color);
    border-color: var(--danger-color);
    color: var(--white);
}

.btn-block {
    display: block;
    width: 100%;
}

.btn-sm {
    padding: 4px 8px;
    font-size: 12px;
}

.btn-large {
    padding: 12px 24px;
    font-size: 16px;
}

.btn-outline {
    background: transparent;
}

/* ==================== 表单 ==================== */
.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    margin-bottom: 4px;
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 14px;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

.required {
    color: var(--danger-color);
}

.inline-form {
    display: inline-block;
}

.form-row {
    display: flex;
    gap: 16px;
}

.form-row .form-group {
    flex: 1;
}

/* ==================== 徽章 ==================== */
.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 3px;
    font-size: 12px;
}

.badge-success { background: #d9f7be; color: #52c41a; }
.badge-warning { background: #ffe58f; color: #faad14; }
.badge-danger { background: #ffccc7; color: #f5222d; }
.badge-info { background: #bae7ff; color: #1890ff; }
.badge-admin { background: #ffd591; color: #d46b08; }
.badge-user { background: #d9d9d9; color: #666; }

/* ==================== 提示框 ==================== */
.alert {
    padding: 12px 16px;
    border-radius: 4px;
    margin-bottom: 16px;
}

.alert-success {
    background: #f6ffed;
    border: 1px solid #b7eb8f;
    color: #52c41a;
}

.alert-error {
    background: #fff2f0;
    border: 1px solid #ffccc7;
    color: #f5222d;
}

.alert-warning {
    background: #fffbe6;
    border: 1px solid #ffe58f;
    color: #faad14;
}

.alert-info {
    background: #e6f7ff;
    border: 1px solid #91d5ff;
    color: #1890ff;
}

/* ==================== 表格 ==================== */
.data-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--white);
}

.data-table th,
.data-table td {
    padding: 12px;
    border-bottom: 1px solid var(--border-color);
    text-align: left;
}

.data-table th {
    background: #fafafa;
    font-weight: 500;
}

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

/* ==================== 面板 ==================== */
.panel {
    background: var(--white);
    border-radius: 4px;
    margin-bottom: 20px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.panel-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.panel-header h2 {
    font-size: 16px;
    font-weight: 500;
}

.panel-body {
    padding: 20px;
}

/* ==================== 卡片 ==================== */
.card {
    background: var(--white);
    border-radius: 4px;
    padding: 20px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

/* ==================== 统计卡片 ==================== */
.stats-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 20px;
}

.stat-card {
    background: var(--white);
    border-radius: 4px;
    padding: 20px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    text-align: center;
}

.stat-value {
    font-size: 32px;
    font-weight: 600;
    color: var(--text-color);
}

.stat-label {
    font-size: 14px;
    color: var(--text-muted);
    margin-top: 4px;
}

.stat-sub {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 8px;
}

.stat-icon {
    font-size: 32px;
    margin-bottom: 8px;
}

.stat-success .stat-value { color: var(--success-color); }
.stat-warning .stat-value { color: var(--warning-color); }
.stat-danger .stat-value { color: var(--danger-color); }
.stat-info .stat-value { color: var(--info-color); }

/* ==================== 分页 ==================== */
.pagination {
    display: flex;
    gap: 8px;
    justify-content: center;
    margin-top: 20px;
}

.page-link {
    padding: 6px 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-color);
}

.page-link:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    text-decoration: none;
}

.page-link.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: var(--white);
}

/* ==================== 进度条 ==================== */
.progress-bar {
    width: 100px;
    height: 6px;
    background: #e8e8e8;
    border-radius: 3px;
    overflow: hidden;
    display: inline-block;
    vertical-align: middle;
}

.progress-fill {
    height: 100%;
    background: var(--primary-color);
    transition: width 0.3s;
}

/* ==================== 弹窗 ==================== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 1000;
}

.modal-content {
    background: var(--white);
    max-width: 600px;
    margin: 100px auto;
    padding: 20px;
    border-radius: 4px;
    position: relative;
}

.modal-close {
    position: absolute;
    right: 16px;
    top: 16px;
    font-size: 24px;
    cursor: pointer;
}

/* ==================== 工具类 ==================== */
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.text-info { color: var(--info-color); }
.text-success { color: var(--success-color); }
.text-danger { color: var(--danger-color); }

/* ==================== 首页样式 ==================== */
.header {
    background: var(--white);
    padding: 16px 0;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    margin-bottom: 40px;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 20px;
    font-weight: 600;
    color: var(--primary-color);
}

.nav {
    display: flex;
    gap: 16px;
    align-items: center;
}

.user-info {
    color: var(--text-muted);
}

.hero {
    text-align: center;
    padding: 60px 0;
}

.hero h1 {
    font-size: 36px;
    margin-bottom: 16px;
}

.hero p {
    font-size: 18px;
    color: var(--text-muted);
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    padding: 40px 0;
}

.feature-card {
    background: var(--white);
    padding: 24px;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.feature-card h3 {
    margin-bottom: 12px;
    color: var(--primary-color);
}

.cta {
    text-align: center;
    padding: 40px 0 80px;
}

.footer {
    text-align: center;
    padding: 20px 0;
    color: var(--text-muted);
    border-top: 1px solid var(--border-color);
}

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

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 20px;
}

.login-box {
    background: var(--white);
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
}

.login-box h1 {
    text-align: center;
    color: var(--primary-color);
    margin-bottom: 8px;
}

.login-box h2 {
    text-align: center;
    font-size: 18px;
    color: var(--text-muted);
    margin-bottom: 24px;
}

.login-footer {
    text-align: center;
    margin-top: 20px;
    color: var(--text-muted);
}

.login-tips {
    margin-top: 24px;
    padding: 16px;
    background: #f5f5f5;
    border-radius: 4px;
    font-size: 12px;
}

/* ==================== 快速操作 ==================== */
.quick-actions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

.quick-action {
    display: block;
    padding: 20px;
    background: var(--bg-color);
    border-radius: 4px;
    text-align: center;
    transition: all 0.3s;
}

.quick-action:hover {
    background: #e6f7ff;
    text-decoration: none;
}

.qa-icon {
    font-size: 32px;
    display: block;
    margin-bottom: 8px;
}

.qa-title {
    font-weight: 500;
    color: var(--text-color);
    display: block;
    margin-bottom: 4px;
}

.qa-desc {
    font-size: 12px;
    color: var(--text-muted);
}

/* ==================== 日志列表 ==================== */
.log-list {
    list-style: none;
}

.log-list li {
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    gap: 12px;
}

.log-user {
    font-weight: 500;
    color: var(--primary-color);
}

.log-action {
    flex: 1;
    color: var(--text-color);
}

.log-time {
    color: var(--text-muted);
    font-size: 12px;
}

/* ==================== Token显示 ==================== */
.token-display {
    display: flex;
    gap: 8px;
    align-items: center;
    margin: 16px 0;
}

.token-display code {
    flex: 1;
    padding: 12px;
    background: var(--bg-color);
    border-radius: 4px;
    font-size: 16px;
}

/* ==================== 筛选链接 ==================== */
.filter-links {
    display: flex;
    gap: 12px;
}

.filter-links a {
    padding: 4px 12px;
    border-radius: 4px;
    color: var(--text-muted);
}

.filter-links a:hover,
.filter-links a.active {
    background: var(--primary-color);
    color: var(--white);
    text-decoration: none;
}

/* ==================== 仪表盘网格 ==================== */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

/* ==================== 响应式 ==================== */
@media (max-width: 768px) {
    .header .container {
        flex-direction: column;
        gap: 16px;
    }
    
    .nav {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .stats-row {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        flex-direction: column;
    }
    
    .data-table {
        font-size: 12px;
    }
    
    .data-table th,
    .data-table td {
        padding: 8px;
    }
}