/* 全局样式 */
:root {
    --primary-color: #4e73df;
    --secondary-color: #6c757d;
    --success-color: #1cc88a;
    --info-color: #36b9cc;
    --warning-color: #f6c23e;
    --danger-color: #e74a3b;
    --light-color: #f8f9fc;
    --dark-color: #5a5c69;
    --border-color: #e3e6f0;
    --shadow-color: rgba(58, 59, 69, 0.15);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
    background-color: #f8f9fc;
    color: #333;
    line-height: 1.6;
    min-height: 100vh;
}

/* 布局容器 */
.container-fluid {
    padding: 0 15px;
}

/* 卡片样式 */
.card {
    background: #fff;
    border-radius: 0.5rem;
    border: 1px solid var(--border-color);
    box-shadow: 0 0.15rem 1.75rem 0 var(--shadow-color);
    margin-bottom: 1.5rem;
    transition: all 0.3s ease;
}

.card:hover {
    box-shadow: 0 0.5rem 2rem 0 rgba(58, 59, 69, 0.2);
}

.card-header {
    background-color: #fff;
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 1.25rem;
    border-radius: 0.5rem 0.5rem 0 0 !important;
}

.card-header h4,
.card-header h5,
.card-header h6 {
    margin: 0;
    color: var(--dark-color);
}

.card-body {
    padding: 1.25rem;
}

.card-footer {
    background-color: #f8f9fa;
    border-top: 1px solid var(--border-color);
    padding: 1rem 1.25rem;
    border-radius: 0 0 0.5rem 0.5rem;
}

/* 按钮样式 */
.btn {
    padding: 0.5rem 1rem;
    border-radius: 0.35rem;
    font-weight: 500;
    border: 1px solid transparent;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn i {
    font-size: 1.1em;
}

.btn-sm {
    padding: 0.25rem 0.5rem;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 0.75rem 1.5rem;
    font-size: 1.1rem;
}

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

.btn-primary:hover {
    background-color: #2e59d9;
    border-color: #2653d4;
    transform: translateY(-1px);
    box-shadow: 0 0.5rem 1rem rgba(78, 115, 223, 0.15);
}

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

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

.btn-warning {
    background-color: var(--warning-color);
    border-color: var(--warning-color);
    color: #212529;
}

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

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

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

/* 表格样式 */
.table {
    width: 100%;
    background-color: white;
    border-collapse: separate;
    border-spacing: 0;
    border-radius: 0.35rem;
    overflow: hidden;
    box-shadow: 0 0 1px rgba(0, 0, 0, 0.1);
}

.table th {
    background-color: #f8f9fa;
    border-bottom: 2px solid var(--border-color);
    padding: 1rem;
    font-weight: 600;
    color: var(--dark-color);
    text-align: left;
}

.table td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

.table tr:last-child td {
    border-bottom: none;
}

.table tr:hover {
    background-color: rgba(0, 0, 0, 0.02);
}

.table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

/* 表单样式 */
.form-label {
    font-weight: 600;
    color: #495057;
    margin-bottom: 0.5rem;
    display: block;
}

.form-control,
.form-select {
    padding: 0.5rem 0.75rem;
    font-size: 1rem;
    line-height: 1.5;
    color: #495057;
    background-color: #fff;
    border: 1px solid #ced4da;
    border-radius: 0.35rem;
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
    width: 100%;
}

.form-control:focus,
.form-select:focus {
    border-color: #80bdff;
    outline: 0;
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}

.form-control-lg {
    padding: 0.75rem 1rem;
    font-size: 1.25rem;
}

.form-text {
    color: #6c757d;
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

/* 徽章样式 */
.badge {
    display: inline-block;
    padding: 0.35em 0.65em;
    font-size: 0.75em;
    font-weight: 600;
    line-height: 1;
    text-align: center;
    white-space: nowrap;
    vertical-align: baseline;
    border-radius: 0.25rem;
}

.badge-pill {
    border-radius: 50rem;
}

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

.badge-warning {
    background-color: var(--warning-color);
    color: #212529;
}

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

.badge-info {
    background-color: var(--info-color);
    color: white;
}

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

.badge-secondary {
    background-color: var(--secondary-color);
    color: white;
}

/* 导航栏样式 */
.navbar {
    padding: 0.75rem 1rem;
    box-shadow: 0 0.15rem 1.75rem 0 var(--shadow-color);
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    color: white !important;
}

.navbar-dark {
    background-color: var(--primary-color) !important;
}

.nav-link {
    color: rgba(255, 255, 255, 0.8);
    padding: 0.5rem 1rem;
    transition: color 0.2s;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-link:hover,
.nav-link.active {
    color: white;
}

.nav-link i {
    font-size: 1.2em;
}

/* 下拉菜单 */
.dropdown-menu {
    border: 1px solid var(--border-color);
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.1);
    border-radius: 0.35rem;
    padding: 0.5rem 0;
}

.dropdown-item {
    padding: 0.5rem 1rem;
    color: #333;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.dropdown-item:hover {
    background-color: #f8f9fa;
    color: var(--primary-color);
}

/* 警告框 */
.alert {
    padding: 1rem 1.25rem;
    border-radius: 0.35rem;
    border: 1px solid transparent;
    margin-bottom: 1rem;
}

.alert-success {
    background-color: #d1e7dd;
    border-color: #badbcc;
    color: #0f5132;
}

.alert-danger {
    background-color: #f8d7da;
    border-color: #f5c2c7;
    color: #842029;
}

.alert-warning {
    background-color: #fff3cd;
    border-color: #ffecb5;
    color: #664d03;
}

.alert-info {
    background-color: #cff4fc;
    border-color: #b6effb;
    color: #055160;
}

/* 分页样式 */
.pagination {
    display: flex;
    padding-left: 0;
    list-style: none;
    border-radius: 0.35rem;
}

.page-link {
    padding: 0.5rem 0.75rem;
    margin-left: -1px;
    line-height: 1.25;
    color: var(--primary-color);
    background-color: #fff;
    border: 1px solid #dee2e6;
    text-decoration: none;
    transition: all 0.2s;
}

.page-link:hover {
    background-color: #e9ecef;
    border-color: #dee2e6;
}

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

/* 进度条 */
.progress {
    height: 1rem;
    background-color: #e9ecef;
    border-radius: 0.25rem;
    overflow: hidden;
}

.progress-bar {
    background-color: var(--primary-color);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    color: white;
    transition: width 0.6s ease;
}

/* 富文本编辑器样式 */
.editor-container {
    border: 1px solid var(--border-color);
    border-radius: 0.35rem;
    overflow: hidden;
}

.editor-toolbar {
    background: #f8f9fa;
    border-bottom: 1px solid var(--border-color);
    padding: 0.5rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
}

.editor-toolbar button {
    background: white;
    border: 1px solid #ced4da;
    border-radius: 0.25rem;
    padding: 0.25rem 0.5rem;
    cursor: pointer;
    transition: all 0.2s;
}

.editor-toolbar button:hover {
    background: #e9ecef;
}

.editor-content {
    min-height: 300px;
    padding: 1rem;
    outline: none;
}

/* SEO分析卡片 */
.seo-score-card {
    text-align: center;
    padding: 1.5rem;
}

.seo-score-value {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1;
}

.seo-score-excellent {
    color: var(--success-color);
}

.seo-score-good {
    color: var(--info-color);
}

.seo-score-fair {
    color: var(--warning-color);
}

.seo-score-poor {
    color: var(--danger-color);
}

.seo-metric {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
}

.seo-metric:last-child {
    border-bottom: none;
}

.metric-value {
    font-weight: 600;
    color: var(--dark-color);
}

/* 加载动画 */
.loading-spinner {
    display: inline-block;
    width: 2rem;
    height: 2rem;
    border: 0.25rem solid rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container-fluid {
        padding: 0 10px;
    }
    
    .card-body {
        padding: 1rem;
    }
    
    .table th,
    .table td {
        padding: 0.75rem 0.5rem;
    }
    
    .btn {
        padding: 0.4rem 0.8rem;
        font-size: 0.9rem;
    }
    
    .navbar-nav {
        padding-top: 1rem;
    }
    
    .nav-link {
        padding: 0.5rem 0;
    }
}

/* 暗色模式支持 */
@media (prefers-color-scheme: dark) {
    body {
        background-color: #1a1a1a;
        color: #e0e0e0;
    }
    
    .card {
        background-color: #2d2d2d;
        border-color: #404040;
    }
    
    .table {
        background-color: #2d2d2d;
        color: #e0e0e0;
    }
    
    .table th {
        background-color: #3d3d3d;
        color: #e0e0e0;
    }
    
    .form-control,
    .form-select {
        background-color: #3d3d3d;
        border-color: #404040;
        color: #e0e0e0;
    }
}

/* 工具类 */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-left { text-align: left; }

.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }
.mt-5 { margin-top: 3rem; }

.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1.5rem; }
.mb-5 { margin-bottom: 3rem; }

.p-1 { padding: 0.25rem; }
.p-2 { padding: 0.5rem; }
.p-3 { padding: 1rem; }
.p-4 { padding: 1.5rem; }
.p-5 { padding: 3rem; }

.d-flex { display: flex; }
.d-none { display: none; }
.d-block { display: block; }
.d-inline-block { display: inline-block; }

.flex-column { flex-direction: column; }
.justify-content-between { justify-content: space-between; }
.justify-content-center { justify-content: center; }
.align-items-center { align-items: center; }

.w-100 { width: 100%; }
.h-100 { height: 100%; }

.position-relative { position: relative; }
.position-absolute { position: absolute; }

.overflow-hidden { overflow: hidden; }
.overflow-auto { overflow: auto; }