/* Article Styles */
.article-content {
    padding: 120px 0 80px;
    background: #ffffff;
}

.article-header {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
    text-align: center;
    margin-bottom: 3rem;
}

.breadcrumb {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-bottom: 2rem;
    font-size: 0.9rem;
    color: #666;
}

.breadcrumb a {
    color: #2c5aa0;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 5px;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

.article-header h1 {
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 2rem;
    line-height: 1.2;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
}

.article-meta {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 5px;
    color: #666;
    font-size: 0.9rem;
}

.article-tags {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.article-body {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
    font-size: 1.1rem;
    line-height: 1.7;
    color: #333;
}

.article-intro {
    margin-bottom: 3rem;
}

.lead {
    font-size: 1.3rem;
    color: #2c3e50;
    font-weight: 500;
    line-height: 1.6;
    border-left: 4px solid #2c5aa0;
    padding-left: 20px;
    margin-bottom: 2rem;
}

.article-image {
    background: linear-gradient(135deg, #2c5aa0, #1e3a5f);
    border-radius: 15px;
    height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 3rem 0;
}

.article-icon {
    font-size: 6rem;
    color: white;
    opacity: 0.9;
}

.article-body h2 {
    font-size: 2rem;
    color: #2c3e50;
    margin: 3rem 0 1.5rem 0;
    display: flex;
    align-items: center;
    gap: 10px;
}

.article-body h3 {
    font-size: 1.5rem;
    color: #2c3e50;
    margin: 2rem 0 1rem 0;
}

.article-body h4 {
    font-size: 1.3rem;
    color: #2c3e50;
    margin: 1.5rem 0 0.5rem 0;
}

.article-body p {
    margin-bottom: 1.5rem;
}

.article-body ul,
.article-body ol {
    margin: 1.5rem 0;
    padding-left: 2rem;
}

.article-body li {
    margin-bottom: 0.5rem;
}

/* Info Boxes */
.info-box,
.warning-box {
    background: #f8f9fa;
    border: 1px solid #e9ecef;
    border-radius: 10px;
    padding: 2rem;
    margin: 2rem 0;
    border-left: 4px solid #2c5aa0;
}

.warning-box {
    background: #fff3cd;
    border-color: #f0ad4e;
    border-left-color: #f0ad4e;
}

.info-box h3,
.warning-box h3 {
    margin-top: 0;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 10px;
    color: #2c5aa0;
}

.warning-box h3 {
    color: #f0ad4e;
}

/* Checklists */
.checklist {
    background: #f8f9fa;
    border-radius: 10px;
    padding: 1.5rem;
    margin: 1.5rem 0;
}

.checklist h3 {
    margin-top: 0;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 10px;
    color: #27ae60;
}

.checklist ul {
    list-style: none;
    padding-left: 0;
}

.checklist li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 0.8rem;
}

.checklist li i {
    color: #27ae60;
    margin-top: 3px;
    flex-shrink: 0;
}

/* Check Areas Grid */
.check-areas {
    margin: 2rem 0;
}

.check-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.check-item {
    background: white;
    border: 2px solid #e9ecef;
    border-radius: 10px;
    padding: 1.5rem;
    text-align: center;
    transition: border-color 0.3s;
}

.check-item:hover {
    border-color: #2c5aa0;
}

.check-item i {
    font-size: 2.5rem;
    color: #2c5aa0;
    margin-bottom: 1rem;
}

.check-item h4 {
    margin: 0 0 0.5rem 0;
    color: #2c3e50;
}

.check-item p {
    margin: 0;
    color: #666;
    font-size: 0.9rem;
}

/* TÜV Checklist */
.tuv-checklist {
    background: #f8f9fa;
    border-radius: 15px;
    padding: 2rem;
    margin: 2rem 0;
}

.tuv-checklist h3 {
    color: #2c5aa0;
    border-bottom: 2px solid #2c5aa0;
    padding-bottom: 0.5rem;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Common Issues */
.common-issues {
    margin: 2rem 0;
}

.issue {
    background: white;
    border: 1px solid #e9ecef;
    border-radius: 10px;
    padding: 1.5rem;
    margin-bottom: 1rem;
    border-left: 4px solid #e74c3c;
}

.issue i {
    font-size: 2rem;
    color: #e74c3c;
    margin-bottom: 1rem;
}

.issue h4 {
    margin: 0 0 0.5rem 0;
    color: #2c3e50;
}

.issue p {
    margin: 0 0 1rem 0;
    color: #666;
}

.fix {
    display: block;
    color: #27ae60;
    font-weight: 500;
    font-style: italic;
}

/* Warning Signs */
.warning-signs {
    background: #fff3cd;
    border: 1px solid #f0ad4e;
    border-radius: 10px;
    padding: 2rem;
    margin: 2rem 0;
    border-left: 4px solid #f0ad4e;
}

.warning-signs h3 {
    margin-top: 0;
    margin-bottom: 1rem;
    color: #f0ad4e;
    display: flex;
    align-items: center;
    gap: 10px;
}

.warning-signs ul {
    list-style: none;
    padding-left: 0;
}

.warning-signs li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 0.8rem;
}

.warning-signs li i {
    color: #e74c3c;
    margin-top: 3px;
    flex-shrink: 0;
}

/* Oil Types */
.oil-types {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.oil-type {
    background: white;
    border: 2px solid #e9ecef;
    border-radius: 10px;
    padding: 1.5rem;
    transition: border-color 0.3s;
}

.oil-type:hover {
    border-color: #2c5aa0;
}

.oil-type h4 {
    margin-top: 0;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.oil-type p {
    margin-bottom: 0.8rem;
    font-size: 0.95rem;
}

/* Price Table */
.price-table {
    background: #f8f9fa;
    border-radius: 10px;
    padding: 2rem;
    margin: 2rem 0;
}

.price-table table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
}

.price-table td {
    padding: 1rem;
    border-bottom: 1px solid #dee2e6;
}

.price-table td:last-child {
    text-align: right;
    font-weight: bold;
    color: #27ae60;
}

/* Cost Info */
.cost-info {
    background: #e8f5e8;
    border: 1px solid #27ae60;
    border-radius: 10px;
    padding: 2rem;
    margin: 2rem 0;
    border-left: 4px solid #27ae60;
}

.cost-info h3 {
    margin-top: 0;
    margin-bottom: 1rem;
    color: #27ae60;
    display: flex;
    align-items: center;
    gap: 10px;
}

.cost-info ul {
    margin-bottom: 0;
}

/* Timeline */
.timeline {
    margin: 2rem 0;
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: #2c5aa0;
}

.timeline-item {
    position: relative;
    margin-bottom: 2rem;
    padding-left: 80px;
}

.timeline-item i {
    position: absolute;
    left: 15px;
    top: 0;
    width: 30px;
    height: 30px;
    background: #2c5aa0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 14px;
}

.timeline-item h4 {
    margin: 0 0 0.5rem 0;
    color: #2c3e50;
}

.timeline-item p {
    margin: 0;
    color: #666;
}

/* CTA Box */
.cta-box {
    background: linear-gradient(135deg, #27ae60, #229a56);
    color: white;
    border-radius: 15px;
    padding: 2rem;
    text-align: center;
    margin: 3rem 0;
}

.cta-box h3 {
    margin-top: 0;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.cta-box p {
    margin-bottom: 2rem;
    font-size: 1.1rem;
    opacity: 0.9;
}

/* Related Articles */
.related-articles {
    padding: 80px 0;
    background: #f8f9fa;
}

.related-articles h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #2c3e50;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.related-card {
    background: white;
    border-radius: 10px;
    padding: 2rem;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

.related-card:hover {
    transform: translateY(-5px);
}

.related-card i {
    font-size: 3rem;
    color: #2c5aa0;
    margin-bottom: 1rem;
}

.related-card h3 {
    margin-bottom: 1rem;
}

.related-card h3 a {
    color: #2c3e50;
    text-decoration: none;
}

.related-card h3 a:hover {
    color: #2c5aa0;
}

.related-card p {
    color: #666;
    margin: 0;
}

/* Responsive Design */
@media (max-width: 768px) {
    .article-header h1 {
        font-size: 2rem;
        flex-direction: column;
        gap: 10px;
    }
    
    .article-meta {
        flex-direction: column;
        align-items: center;
        gap: 0.5rem;
    }
    
    .breadcrumb {
        flex-wrap: wrap;
    }
    
    .check-grid {
        grid-template-columns: 1fr;
    }
    
    .oil-types {
        grid-template-columns: 1fr;
    }
    
    .related-grid {
        grid-template-columns: 1fr;
    }
    
    .timeline::before {
        left: 15px;
    }
    
    .timeline-item {
        padding-left: 50px;
    }
    
    .timeline-item i {
        left: 0;
    }
}

@media (max-width: 480px) {
    .article-content {
        padding: 100px 0 60px;
    }
    
    .article-header h1 {
        font-size: 1.8rem;
    }
    
    .article-body {
        font-size: 1rem;
    }
    
    .article-body h2 {
        font-size: 1.6rem;
    }
    
    .lead {
        font-size: 1.1rem;
    }
    
    .article-image {
        height: 200px;
    }
    
    .article-icon {
        font-size: 4rem;
    }
}