/* Articles and Content Reading Styles */

.article-page {
    min-height: 100vh;
    background: linear-gradient(135deg, rgba(0, 26, 51, 0.95), rgba(0, 43, 77, 0.95));
}

.article-hero {
    padding-top: 140px;
    padding-bottom: var(--spacing-xl);
    text-align: center;
    background: linear-gradient(135deg, rgba(0, 26, 51, 0.9), rgba(0, 43, 77, 0.9));
    min-height: 50vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.article-hero-content {
    max-width: 900px;
    margin: 0 auto;
}

.article-hero h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    margin-bottom: var(--spacing-md);
    color: var(--accent-color);
    line-height: 1.2;
}

.article-meta-hero {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-top: var(--spacing-md);
}

.article-meta-hero span {
    color: rgba(255,255,255,0.7);
    font-size: 1rem;
}

/* Article Body */
.article-body {
    max-width: 900px;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-md);
    background: #ffffff;
    color: #2c3e50;
    border-radius: 20px 20px 0 0;
    margin-top: -30px;
    position: relative;
    z-index: 10;
}

.article-body h2 {
    color: #0066cc;
    font-size: 2rem;
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 3px solid #00a86b;
}

.article-body h3 {
    color: #00509e;
    font-size: 1.5rem;
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
}

.article-body p {
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
    font-size: 1.1rem;
    color: #2c3e50;
}

.article-body ul,
.article-body ol {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-xl);
    line-height: 1.8;
}

.article-body li {
    margin-bottom: var(--spacing-sm);
    color: #2c3e50;
}

.article-body strong {
    color: #0066cc;
    font-weight: 700;
}

.article-body a {
    color: #0066cc;
    text-decoration: underline;
    transition: color var(--transition-speed);
}

.article-body a:hover {
    color: #00a86b;
}

/* Highlight Boxes */
.highlight-box {
    background: linear-gradient(135deg, rgba(0, 168, 107, 0.1), rgba(0, 102, 204, 0.1));
    border-left: 4px solid #00a86b;
    padding: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
    border-radius: 10px;
}

.highlight-box h3 {
    color: #00a86b;
    margin-top: 0;
}

.warning-box {
    background: linear-gradient(135deg, rgba(255, 107, 107, 0.1), rgba(238, 90, 36, 0.1));
    border-left: 4px solid #ff6b6b;
    padding: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
    border-radius: 10px;
}

.warning-box h3 {
    color: #ff6b6b;
    margin-top: 0;
}

.tip-box {
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.1), rgba(255, 165, 0, 0.1));
    border-left: 4px solid #ffd700;
    padding: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
    border-radius: 10px;
}

.tip-box h3 {
    color: #ff8c00;
    margin-top: 0;
}

/* Table Styles */
.comparison-table {
    width: 100%;
    overflow-x: auto;
    margin: var(--spacing-xl) 0;
}

.comparison-table table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    min-width: 600px;
}

.comparison-table th,
.comparison-table td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid #e0e0e0;
}

.comparison-table th {
    background: linear-gradient(135deg, #0066cc, #00a86b);
    color: white;
    font-weight: 600;
}

.comparison-table tr:hover {
    background: rgba(0, 168, 107, 0.05);
}

/* Article Navigation */
.article-navigation {
    display: flex;
    justify-content: space-between;
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-xl);
    border-top: 2px solid #e0e0e0;
    gap: var(--spacing-md);
}

.article-nav-link {
    display: flex;
    flex-direction: column;
    padding: var(--spacing-md);
    background: linear-gradient(135deg, rgba(0, 102, 204, 0.1), rgba(0, 168, 107, 0.1));
    border-radius: 10px;
    text-decoration: none;
    flex: 1;
    transition: all var(--transition-speed);
}

.article-nav-link:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 168, 107, 0.3);
}

.article-nav-link span {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 0.5rem;
}

.article-nav-link strong {
    color: #0066cc;
    font-size: 1.1rem;
}

/* Back to top button */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: linear-gradient(135deg, #0066cc, #00a86b);
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    cursor: pointer;
    transition: all var(--transition-speed);
    z-index: 1000;
    box-shadow: 0 4px 15px rgba(0, 168, 107, 0.4);
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 25px rgba(0, 168, 107, 0.6);
}

.back-to-top.visible {
    display: flex;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .article-hero {
        padding-top: 120px;
        min-height: 40vh;
    }
    
    .article-body {
        padding: var(--spacing-lg) var(--spacing-md);
        margin-top: -20px;
    }
    
    .article-body h2 {
        font-size: 1.5rem;
    }
    
    .article-body p {
        font-size: 1rem;
    }
    
    .article-navigation {
        flex-direction: column;
    }
    
    .comparison-table {
        -webkit-overflow-scrolling: touch;
    }
}