/* ===========================================
   文章页专用样式 - Notion 文档式风格
   =========================================== */

/* ===========================================
   主内容区域
   =========================================== */

main {
    padding-top: 60px;
    background: var(--bg-primary);
    min-height: calc(100vh - 60px);
}

/* ===========================================
   文章容器
   =========================================== */

.article-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 40px var(--space-md) 80px;
}

/* ===========================================
   文章头部
   =========================================== */

.article-header {
    margin-bottom: 40px;
}

.article-breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.article-breadcrumb a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-normal);
}

.article-breadcrumb a:hover {
    color: var(--text-primary);
}

.article-breadcrumb i {
    font-size: 10px;
}

.article-title {
    font-size: 40px;
    font-weight: 600;
    line-height: 1.3;
    color: var(--text-primary);
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}

.article-meta {
    display: flex;
    align-items: center;
    gap: 24px;
    font-size: 14px;
    color: var(--text-secondary);
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

.meta-item i {
    font-size: 13px;
}

/* ===========================================
   文章内容
   =========================================== */

.article-content {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 40px;
}

.article-intro {
    font-size: 17px;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 32px;
    padding: 20px;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
}

.content-section {
    margin-bottom: 40px;
}

.content-section:last-of-type {
    margin-bottom: 0;
}

.content-section h2 {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color-light);
}

.content-section h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 24px 0 12px 0;
}

.content-section p {
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.content-section ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 16px;
    padding-left: 0;
}

.content-section li {
    position: relative;
    padding-left: 24px;
    font-size: 15px;
    line-height: 1.7;
    color: var(--text-secondary);
}

.content-section li::before {
    content: "•";
    position: absolute;
    left: 8px;
    color: var(--accent-color);
    font-weight: 600;
}

.tip-box {
    background: var(--accent-light);
    border: 1px solid var(--accent-color);
    border-radius: var(--radius-sm);
    padding: 20px;
    margin: 16px 0;
}

.tip-box ul {
    margin-bottom: 0;
}

/* ===========================================
   文章导航
   =========================================== */

.article-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    margin-top: 48px;
    padding-top: 32px;
    border-top: 1px solid var(--border-color);
}

.nav-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    text-decoration: none;
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 500;
    transition: all var(--transition-normal);
}

.nav-btn:hover {
    background: var(--bg-secondary);
    border-color: var(--text-tertiary);
    transform: translateY(-1px);
}

.nav-btn i {
    font-size: 12px;
    color: var(--text-secondary);
}

.nav-prev {
    margin-right: auto;
}

.nav-next {
    margin-left: auto;
}

/* ===========================================
   响应式设计
   =========================================== */

@media (max-width: 768px) {
    .article-container {
        padding: 32px var(--space-md) 60px;
    }

    .article-title {
        font-size: 32px;
    }

    .article-content {
        padding: 28px 20px;
    }

    .article-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    .content-section h2 {
        font-size: 20px;
    }

    .content-section h3 {
        font-size: 17px;
    }

    .article-nav {
        flex-direction: column;
        gap: 12px;
    }

    .nav-btn {
        width: 100%;
        justify-content: center;
    }

    .nav-prev,
    .nav-next {
        margin: 0;
    }
}

@media (max-width: 480px) {
    .article-title {
        font-size: 28px;
    }

    .article-content {
        padding: 20px 16px;
    }

    .article-intro {
        font-size: 15px;
        padding: 16px;
    }

    .content-section p,
    .content-section li {
        font-size: 14px;
    }

    .tip-box {
        padding: 16px;
    }
}