/* ========== 后台管理样式 ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #4f46e5;
    --primary-dark: #4338ca;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;
    --bg: #f3f4f6;
    --sidebar-bg: #1e293b;
    --sidebar-hover: #334155;
    --sidebar-active: #4f46e5;
    --card-bg: #ffffff;
    --text: #1f2937;
    --text-light: #6b7280;
    --border: #e5e7eb;
    --shadow: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-lg: 0 4px 6px -1px rgba(0,0,0,0.1);
    --radius: 10px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    font-size: 14px;
}

/* ========== 登录页 ========== */
.login-page {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

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

.login-box {
    background: white;
    padding: 40px;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

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

.login-header h1 {
    font-size: 24px;
    margin-bottom: 8px;
    color: var(--text);
}

.login-header p {
    color: var(--text-light);
    font-size: 14px;
}

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

.login-form label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    font-size: 14px;
}

.login-form input {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
    transition: all 0.2s;
}

.login-form input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79,70,229,0.1);
}

.btn-block {
    width: 100%;
}

.login-footer {
    text-align: center;
    margin-top: 20px;
    font-size: 13px;
    color: var(--text-light);
}

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

.admin-sidebar {
    width: 240px;
    background: var(--sidebar-bg);
    color: #cbd5e1;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    overflow-y: auto;
    z-index: 100;
    transition: transform 0.3s;
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid #334155;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.sidebar-header h2 {
    font-size: 18px;
    color: white;
}

.sidebar-toggle, .mobile-menu {
    display: none;
    cursor: pointer;
    font-size: 20px;
    color: white;
}

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

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    color: #cbd5e1;
    text-decoration: none;
    transition: all 0.2s;
    font-size: 14px;
}

.nav-item:hover {
    background: var(--sidebar-hover);
    color: white;
}

.nav-item.active {
    background: var(--sidebar-active);
    color: white;
}

.nav-icon {
    font-size: 16px;
    width: 20px;
    text-align: center;
}

.nav-logout {
    margin-top: 20px;
    border-top: 1px solid #334155;
    padding-top: 20px;
    color: #f87171;
}

.nav-logout:hover {
    background: #7f1d1d;
}

.admin-main {
    flex: 1;
    margin-left: 240px;
    min-height: 100vh;
}

.admin-topbar {
    background: white;
    padding: 14px 24px;
    box-shadow: var(--shadow);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 50;
}

.breadcrumb {
    font-size: 16px;
    font-weight: 600;
}

.admin-user {
    color: var(--text-light);
    font-size: 14px;
}

.admin-content {
    padding: 24px;
}

/* ========== 统计卡片 ========== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: white;
    padding: 20px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 14px;
    transition: all 0.2s;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.stat-value {
    font-size: 24px;
    font-weight: 700;
}

.stat-label {
    font-size: 13px;
    color: var(--text-light);
}

.stat-blue { border-left: 4px solid #3b82f6; }
.stat-green { border-left: 4px solid #10b981; }
.stat-orange { border-left: 4px solid #f59e0b; }
.stat-red { border-left: 4px solid #ef4444; }
.stat-purple { border-left: 4px solid #8b5cf6; }
.stat-cyan { border-left: 4px solid #06b6d4; }

/* ========== 面板 ========== */
.panel {
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    margin-bottom: 24px;
    overflow: hidden;
}

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

.panel-header h3 {
    font-size: 16px;
    font-weight: 600;
}

.panel-body {
    padding: 20px;
}

.panel-row {
    margin-bottom: 0;
}

/* ========== 表单 ========== */
.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.form-group {
    margin-bottom: 0;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 6px;
    font-size: 13px;
}

.form-group input[type="text"],
.form-group input[type="number"],
.form-group input[type="password"],
.form-group input[type="email"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 13px;
    transition: all 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(79,70,229,0.1);
}

.form-group textarea {
    resize: vertical;
    font-family: monospace;
}

.form-check {
    display: flex;
    align-items: center;
}

.form-check label {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 0;
    cursor: pointer;
}

.form-actions {
    display: flex;
    gap: 10px;
    align-items: flex-end;
}

/* ========== 按钮 ========== */
.btn {
    display: inline-block;
    padding: 8px 16px;
    border: none;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    text-align: center;
    background: #e5e7eb;
    color: var(--text);
}

.btn:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

.btn-sm {
    padding: 5px 10px;
    font-size: 12px;
}

.btn-primary { background: var(--primary); color: white; }
.btn-success { background: var(--success); color: white; }
.btn-warning { background: var(--warning); color: white; }
.btn-danger { background: var(--danger); color: white; }
.btn-info { background: var(--info); color: white; }

/* ========== 表格 ========== */
.table-responsive {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.data-table th {
    background: #f9fafb;
    padding: 10px 12px;
    text-align: left;
    font-weight: 600;
    color: var(--text-light);
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}

.data-table td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--border);
}

.data-table tr:hover {
    background: #f9fafb;
}

.url-cell {
    max-width: 300px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.text-center { text-align: center; }
.text-muted { color: var(--text-light); }

/* ========== 标签 ========== */
.tag {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
}

.tag-green { background: #d1fae5; color: #065f46; }
.tag-red { background: #fee2e2; color: #991b1b; }
.tag-orange { background: #fed7aa; color: #9a3412; }
.tag-blue { background: #dbeafe; color: #1e40af; }
.tag-baidu { background: #dbeafe; color: #1e40af; }
.tag-sogou { background: #ffedd5; color: #9a3412; }
.tag-360 { background: #d1fae5; color: #065f46; }
.tag-bing { background: #ccfbf1; color: #115e59; }
.tag-sm { background: #ffedd5; color: #9a3412; }

/* ========== 提示框 ========== */
.alert {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 16px;
    font-size: 14px;
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #6ee7b7;
}

.alert-error {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fca5a5;
}

/* ========== 筛选栏 ========== */
.filter-bar {
    display: flex;
    gap: 10px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.filter-bar select,
.filter-bar input {
    padding: 6px 10px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 13px;
}

.batch-bar {
    display: flex;
    gap: 10px;
    align-items: center;
    margin-bottom: 12px;
    padding: 10px;
    background: #f9fafb;
    border-radius: 6px;
}

/* ========== 分页 ========== */
.pagination {
    display: flex;
    gap: 4px;
    justify-content: center;
    margin-top: 20px;
}

.page-link {
    padding: 6px 12px;
    border: 1px solid var(--border);
    border-radius: 4px;
    text-decoration: none;
    color: var(--text);
    font-size: 13px;
}

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

/* ========== 爬虫卡片 ========== */
.crawler-card {
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 16px;
}

.crawler-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 14px;
}

.crawler-header h4 {
    font-size: 15px;
}

/* ========== 操作栏 ========== */
.action-bar {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

/* ========== 信息列表 ========== */
.info-list {
    padding-left: 20px;
    color: var(--text-light);
    font-size: 13px;
}

.info-list li {
    margin-bottom: 8px;
}

/* ========== 代码块 ========== */
.code-block {
    background: #1f2937;
    color: #e5e7eb;
    padding: 16px;
    border-radius: 8px;
    font-family: monospace;
    font-size: 13px;
    overflow-x: auto;
    line-height: 1.8;
}

/* ========== 弹窗 ========== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.show {
    display: flex;
}

.modal-content {
    background: white;
    padding: 24px;
    border-radius: 12px;
    width: 90%;
    max-width: 450px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.modal-header h3 {
    font-size: 18px;
}

.modal-close {
    font-size: 24px;
    cursor: pointer;
    color: var(--text-light);
}

/* ========== 响应式 ========== */
@media (max-width: 768px) {
    .admin-sidebar {
        transform: translateX(-100%);
    }

    .admin-sidebar.show {
        transform: translateX(0);
    }

    .admin-main {
        margin-left: 0;
    }

    .sidebar-toggle, .mobile-menu {
        display: block;
    }

    .form-grid {
        grid-template-columns: 1fr;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .admin-content {
        padding: 16px;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }

    .filter-bar {
        flex-direction: column;
    }

    .filter-bar select,
    .filter-bar input {
        width: 100%;
    }
}