/* 全局样式 */
:root {
    --primary-color: #0d6efd;
    --secondary-color: #6c757d;
    --accent-color: #fd7e14;
    --light-color: #f8f9fa;
    --dark-color: #212529;
    --success-color: #198754;
    --info-color: #0dcaf0;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    font-family: var(--font-family);
    color: var(--dark-color);
    background-color: #f9f9f9;
    line-height: 1.6;
}

/* 导航栏 */
.navbar-brand {
    font-weight: 700;
    letter-spacing: 0.5px;
}

.navbar-nav .nav-link {
    font-weight: 500;
}

/* 卡片样式 */
.card {
    border: none;
    border-radius: 0.5rem;
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1) !important;
}

.card-title {
    font-weight: 600;
}

.shadow-sm {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08) !important;
}

/* 按钮样式 */
.btn {
    font-weight: 500;
    border-radius: 0.25rem;
    padding: 0.375rem 0.75rem;
}

.btn-sm {
    padding: 0.25rem 0.5rem;
    font-size: 0.85rem;
}

/* 标签样式 */
.badge {
    font-weight: 500;
    padding: 0.35em 0.65em;
    font-size: 0.75em;
}

/* 首页特色文章 */
.card-img-top {
    height: 200px;
    object-fit: cover;
}

/* 文章列表中的图片 */
.object-fit-cover {
    object-fit: cover;
}

/* 文章内容 */
.article-content {
    font-size: 1.05rem;
    line-height: 1.7;
}

.article-content h2 {
    margin-top: 1.5rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.article-content pre {
    background-color: #f8f9fa;
    padding: 1rem;
    border-radius: 0.25rem;
    overflow-x: auto;
}

.article-content blockquote {
    border-left: 4px solid var(--primary-color);
    padding-left: 1rem;
    color: var(--secondary-color);
    font-style: italic;
}

/* 侧边栏 */
.card-header {
    background-color: #fff;
    font-weight: 600;
    border-bottom: 1px solid rgba(0,0,0,.125);
}

/* 页脚 */
footer {
    background-color: var(--dark-color);
}

/* 分页 */
.pagination .page-link {
    color: var(--primary-color);
}

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

/* 响应式布局调整 */
@media (max-width: 768px) {
    .navbar-brand {
        font-size: 1.2rem;
    }
    
    .display-4 {
        font-size: 2.5rem;
    }
    
    .card-img-top {
        height: 150px;
    }
    
    .article-content {
        font-size: 1rem;
    }
}

@media (max-width: 576px) {
    .navbar-brand {
        font-size: 1.1rem;
    }
    
    .display-4 {
        font-size: 2rem;
    }
    
    .lead {
        font-size: 1rem;
    }
    
    .card-title.h4 {
        font-size: 1.25rem;
    }
    
    .card-text {
        font-size: 0.95rem;
    }
}

/* 自定义颜色和效果 */
.text-primary {
    color: var(--primary-color) !important;
}

.text-secondary {
    color: var(--secondary-color) !important;
}

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

.rounded-circle {
    object-fit: cover;
}

/* 鼠标悬停效果 */
a:hover {
    text-decoration: none;
    opacity: 0.9;
}

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

/* 标签云 */
.btn-outline-primary, .btn-outline-secondary, .btn-outline-success, 
.btn-outline-danger, .btn-outline-warning, .btn-outline-info, .btn-outline-dark {
    margin-bottom: 0.5rem;
}

/* 评论区样式 */
.comments .rounded-circle {
    object-fit: cover;
}

/* 编辑页样式 */
.note-editor {
    margin-bottom: 1.5rem;
}

/* 预览图片 */
#cover-preview, #preview-cover {
    max-height: 300px;
    object-fit: cover;
}

/* 关于页技能进度条 */
.progress {
    height: 0.5rem;
    background-color: #e9ecef;
}

.progress-bar {
    transition: width 1s ease;
}

/* 特效动画 */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.fadeIn {
    animation: fadeIn 1s ease-in;
}

@keyframes slideInUp {
    from {
        transform: translateY(20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.slideInUp {
    animation: slideInUp 0.5s ease-out;
}