/*
  Blog Section Styles — WhatsApp AI Chatbot
  Matches main site design system (Inter, WhatsApp green palette)
*/

/* Blog Hero / Header */
.blog-header {
    background: linear-gradient(135deg, #075E54 0%, #128C7E 50%, #25D366 100%);
    padding: 60px 0 48px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.blog-header::before {
    content: '';
    position: absolute;
    inset: 0;
    opacity: 0.08;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='60' height='60' viewBox='0 0 60 60'%3E%3Cpath fill='%23ffffff' fill-opacity='0.4' d='M30 5c-13.807 0-25 11.193-25 25s11.193 25 25 25 25-11.193 25-25-11.193-25-25-25zm0 45c-11.028 0-20-8.972-20-20s8.972-20 20-20 20 8.972 20 20-8.972 20-20 20z'/%3E%3C/svg%3E");
    background-size: 120px 120px;
    pointer-events: none;
}

.blog-header h1 {
    color: #fff;
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 0.75rem;
    background: none;
    -webkit-background-clip: unset;
    background-clip: unset;
    -webkit-text-fill-color: #fff;
}

.blog-header p {
    color: rgba(255, 255, 255, 0.85);
    font-size: 1.15rem;
    max-width: 600px;
    margin: 0 auto;
}

.blog-header .breadcrumb {
    margin-bottom: 24px;
    font-size: 0.9rem;
}

.blog-header .breadcrumb a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.2s;
}

.blog-header .breadcrumb a:hover {
    color: #fff;
}

.blog-header .breadcrumb span {
    color: rgba(255, 255, 255, 0.5);
    margin: 0 8px;
}

/* Navigation Bar */
.blog-nav {
    background: #fff;
    border-bottom: 1px solid #eee;
    padding: 16px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.blog-nav .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.blog-nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--text-main);
    text-decoration: none;
}

.blog-nav-brand svg {
    width: 28px;
    height: 28px;
    color: var(--wa-primary);
}

.blog-nav-links {
    display: flex;
    align-items: center;
    gap: 24px;
}

.blog-nav-links a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s;
}

.blog-nav-links a:hover {
    color: var(--wa-primary-dark);
}

.blog-nav-links .nav-cta {
    background: var(--wa-primary);
    color: #fff;
    padding: 10px 20px;
    border-radius: 99px;
    font-weight: 600;
    transition: all 0.3s;
}

.blog-nav-links .nav-cta:hover {
    background: #1DA851;
    transform: translateY(-1px);
}

@media (max-width: 600px) {
    .blog-nav-links a:not(.nav-cta) {
        display: none;
    }
}

/* Blog Grid (Index) */
.blog-grid-section {
    padding: 60px 0 80px;
    background: var(--bg-page);
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 28px;
    margin-top: 40px;
}

@media (max-width: 400px) {
    .blog-grid {
        grid-template-columns: 1fr;
    }
}

/* Blog Card */
.blog-card {
    background: #fff;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    transition: all 0.3s ease;
    border: 1px solid rgba(0, 0, 0, 0.04);
    display: flex;
    flex-direction: column;
}

.blog-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.12);
    border-color: var(--wa-primary);
}

.blog-card-image {
    height: 200px;
    background: linear-gradient(135deg, #e8f5e9 0%, #c8e6c9 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.blog-card-image .card-emoji {
    font-size: 4rem;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.1));
}

.blog-card-image .card-tag {
    position: absolute;
    top: 16px;
    left: 16px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(8px);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--wa-primary-dark);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.blog-card-body {
    padding: 28px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.blog-card-meta {
    font-size: 0.8rem;
    color: var(--text-light);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.blog-card-meta .reading-time {
    display: flex;
    align-items: center;
    gap: 4px;
}

.blog-card-body h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 12px;
    line-height: 1.3;
}

.blog-card-body p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 20px;
    flex: 1;
}

.blog-card-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--wa-primary-dark);
    text-decoration: none;
    transition: gap 0.2s;
}

.blog-card-link::after {
    content: '\2192';
    transition: transform 0.2s;
}

.blog-card-link:hover {
    gap: 10px;
}

.blog-card-link:hover::after {
    transform: translateX(4px);
}

/* Article Page Styles */
.article-hero {
    background: linear-gradient(135deg, #075E54 0%, #128C7E 50%, #25D366 100%);
    padding: 80px 0 60px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.article-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    opacity: 0.08;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='60' height='60' viewBox='0 0 60 60'%3E%3Cpath fill='%23ffffff' fill-opacity='0.4' d='M30 5c-13.807 0-25 11.193-25 25s11.193 25 25 25 25-11.193 25-25-11.193-25-25-25zm0 45c-11.028 0-20-8.972-20-20s8.972-20 20-20 20 8.972 20 20-8.972 20-20 20z'/%3E%3C/svg%3E");
    background-size: 120px 120px;
    pointer-events: none;
}

.article-hero .breadcrumb {
    margin-bottom: 24px;
    font-size: 0.9rem;
}

.article-hero .breadcrumb a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
}

.article-hero .breadcrumb a:hover {
    color: #fff;
}

.article-hero .breadcrumb span {
    color: rgba(255, 255, 255, 0.5);
    margin: 0 8px;
}

.article-meta-hero {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.article-tag {
    background: rgba(255, 255, 255, 0.2);
    color: #fff;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.article-date {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}

.article-hero h1 {
    color: #fff;
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    max-width: 800px;
    margin: 0 auto 16px;
    background: none;
    -webkit-background-clip: unset;
    background-clip: unset;
    -webkit-text-fill-color: #fff;
}

.article-hero .article-subtitle {
    color: rgba(255, 255, 255, 0.85);
    font-size: 1.15rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Article Content */
.article-content {
    max-width: 740px;
    margin: 0 auto;
    padding: 60px 20px 80px;
}

.article-content h2 {
    font-size: 1.8rem;
    color: var(--text-main);
    margin-top: 48px;
    margin-bottom: 20px;
    line-height: 1.3;
}

.article-content h3 {
    font-size: 1.35rem;
    color: var(--text-main);
    margin-top: 36px;
    margin-bottom: 16px;
}

.article-content p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.article-content ul,
.article-content ol {
    margin: 20px 0;
    padding-left: 24px;
}

.article-content li {
    font-size: 1.05rem;
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: 10px;
    list-style: disc;
}

.article-content ol li {
    list-style: decimal;
}

.article-content strong {
    color: var(--text-main);
    font-weight: 700;
}

.article-content a {
    color: var(--wa-primary-dark);
    text-decoration: underline;
    text-decoration-color: rgba(18, 140, 126, 0.3);
    text-underline-offset: 3px;
    transition: text-decoration-color 0.2s;
}

.article-content a:hover {
    text-decoration-color: var(--wa-primary-dark);
}

/* Highlight Box */
.highlight-box {
    background: linear-gradient(135deg, #e8f5e9, #f1f8e9);
    border-left: 4px solid var(--wa-primary);
    padding: 24px 28px;
    border-radius: 0 16px 16px 0;
    margin: 32px 0;
}

.highlight-box p {
    font-size: 1.05rem;
    color: var(--text-main);
    margin-bottom: 0;
    font-weight: 500;
}

/* Stat Box */
.stat-box {
    background: #fff;
    border: 2px solid var(--wa-primary);
    border-radius: 16px;
    padding: 28px;
    text-align: center;
    margin: 32px 0;
    box-shadow: 0 4px 16px rgba(37, 211, 102, 0.1);
}

.stat-box .stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--wa-primary-dark);
    display: block;
    margin-bottom: 8px;
}

.stat-box .stat-label {
    font-size: 1rem;
    color: var(--text-secondary);
}

/* Comparison Table */
.comparison-table {
    width: 100%;
    border-collapse: collapse;
    margin: 32px 0;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
}

.comparison-table th {
    background: var(--wa-dark);
    color: #fff;
    padding: 16px 20px;
    font-weight: 600;
    text-align: left;
    font-size: 0.95rem;
}

.comparison-table td {
    padding: 14px 20px;
    border-bottom: 1px solid #f0f0f0;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.comparison-table tr:nth-child(even) {
    background: #fafafa;
}

.comparison-table tr:hover {
    background: #f0fdf4;
}

/* Article CTA Box */
.article-cta {
    background: linear-gradient(135deg, #075E54, #128C7E);
    border-radius: 24px;
    padding: 40px;
    text-align: center;
    margin: 48px 0;
    position: relative;
    overflow: hidden;
}

.article-cta::before {
    content: '';
    position: absolute;
    inset: 0;
    opacity: 0.06;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='60' height='60' viewBox='0 0 60 60'%3E%3Cpath fill='%23ffffff' fill-opacity='0.4' d='M30 5c-13.807 0-25 11.193-25 25s11.193 25 25 25 25-11.193 25-25-11.193-25-25-25zm0 45c-11.028 0-20-8.972-20-20s8.972-20 20-20 20 8.972 20 20-8.972 20-20 20z'/%3E%3C/svg%3E");
    background-size: 120px 120px;
    pointer-events: none;
}

.article-cta h3 {
    color: #fff;
    font-size: 1.5rem;
    margin-bottom: 12px;
}

.article-cta p {
    color: rgba(255, 255, 255, 0.85);
    font-size: 1.05rem;
    margin-bottom: 24px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.article-cta .cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: #25D366;
    color: #fff;
    padding: 16px 32px;
    border-radius: 60px;
    font-size: 1.1rem;
    font-weight: 700;
    text-decoration: none;
    box-shadow: 0 8px 24px rgba(37, 211, 102, 0.4);
    transition: all 0.3s;
}

.article-cta .cta-btn:hover {
    background: #1DA851;
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(37, 211, 102, 0.5);
}

.article-cta .cta-btn svg {
    width: 24px;
    height: 24px;
}

/* Related Posts */
.related-posts {
    padding: 60px 0 80px;
    background: var(--bg-light);
}

.related-posts h2 {
    text-align: center;
    margin-bottom: 40px;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
}

/* Blog Footer */
.blog-footer {
    background: #111B21;
    color: rgba(255, 255, 255, 0.7);
    padding: 48px 0 32px;
    text-align: center;
}

.blog-footer p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
    margin-bottom: 8px;
}

.blog-footer a {
    color: var(--wa-primary);
    text-decoration: none;
    transition: color 0.2s;
}

.blog-footer a:hover {
    color: #fff;
}

.blog-footer .footer-links {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    margin-top: 16px;
    flex-wrap: wrap;
}

.blog-footer .footer-links a {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.5);
}

.blog-footer .footer-links a:hover {
    color: var(--wa-primary);
}

/* Numbered Tips */
.tip-block {
    background: #fff;
    border-radius: 16px;
    padding: 28px;
    margin: 24px 0;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
    border: 1px solid rgba(0, 0, 0, 0.04);
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.tip-number {
    width: 44px;
    height: 44px;
    min-width: 44px;
    background: linear-gradient(135deg, #25D366, #128C7E);
    color: #fff;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1.2rem;
}

.tip-block h3 {
    margin-top: 0;
    font-size: 1.2rem;
}

.tip-block p {
    margin-bottom: 0;
}

@media (max-width: 600px) {
    .tip-block {
        flex-direction: column;
        gap: 12px;
    }

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

    .article-content {
        padding: 40px 16px 60px;
    }

    .article-hero {
        padding: 60px 0 40px;
    }
}

/* Inline CTA (mid-article) */
.inline-cta {
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
    border-radius: 16px;
    padding: 24px 28px;
    margin: 32px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    flex-wrap: wrap;
}

.inline-cta p {
    margin: 0;
    font-weight: 600;
    color: var(--text-main);
    font-size: 1rem;
}

.inline-cta a {
    background: var(--wa-primary);
    color: #fff;
    padding: 10px 24px;
    border-radius: 99px;
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    white-space: nowrap;
    transition: all 0.3s;
}

.inline-cta a:hover {
    background: #1DA851;
    transform: translateY(-1px);
}

@media (max-width: 600px) {
    .inline-cta {
        flex-direction: column;
        text-align: center;
    }
}