/* ===================== Variables ===================== */
:root {
    --color-primary: #16233F;
    --color-primary-light: #1F3360;
    --color-secondary: #FFD700;
    --color-accent: #2A7F62;
    --color-text: #2D3748;
    --color-text-light: #4A5568;
    --color-bg: #F7FAFC;
    --color-bg-alt: #EDF2F7;
    --color-white: #FFFFFF;
    --color-border: #E2E8F0;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.12);
    --radius: 12px;
    --max-width: 780px;
    --font-heading: 'Zilla Slab', Georgia, serif;
    --font-body: 'IBM Plex Sans', system-ui, sans-serif;
}

/* ===================== Blog Article Styles ===================== */
.blog-article {
    background: var(--color-white);
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 2rem 1.5rem 4rem;
    font-family: var(--font-body);
    color: var(--color-text);
    line-height: 1.8;
}

/* Hero del artículo */
.article-hero {
    text-align: center;
    padding: 3rem 1.5rem 2rem;
    background: linear-gradient(135deg, #16233F 0%, #1F3360 100%);
    color: white;
    border-radius: var(--radius);
    margin-bottom: 2.5rem;
}

.article-hero .article-category {
    display: inline-block;
    background: rgba(255, 215, 0, 0.15);
    color: var(--color-secondary);
    padding: 0.3rem 1rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 1rem;
}

.article-hero h1 {
    font-family: var(--font-heading);
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 700;
    margin: 0.5rem 0 1rem;
    line-height: 1.3;
    color: white;
}

.article-hero .article-meta {
    font-size: 0.9rem;
    opacity: 0.9;
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.article-hero .article-meta span {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

/* Tabla de contenidos */
.toc {
    background: var(--color-bg);
    padding: 1.5rem 2rem;
    border-radius: var(--radius);
    margin: 0 0 2rem 0;
    border-left: 4px solid var(--color-secondary);
}

.toc h2 {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    margin: 0 0 1rem;
    color: var(--color-primary);
}

.toc ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.toc ul li {
    padding: 0.35rem 0;
}

.toc ul li a {
    color: var(--color-primary-light);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.toc ul li a:hover {
    color: var(--color-accent);
}

/* Contenido */
.article-content h2 {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    color: var(--color-primary);
    margin: 2.5rem 0 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 3px solid var(--color-secondary);
}

.article-content h3 {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    color: var(--color-primary-light);
    margin: 2rem 0 0.8rem;
}

.article-content p {
    margin: 0 0 1.2rem;
    font-size: 1.1rem;
    color: var(--color-text);
}

.article-content ul,
.article-content ol {
    margin: 0 0 1.5rem 1.5rem;
}

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

/* Cajas de información */
.info-box {
    background: #EBF8FF;
    border-left: 4px solid #3182CE;
    padding: 1.2rem 1.5rem;
    border-radius: 0 var(--radius) var(--radius) 0;
    margin: 2rem 0;
}

.info-box strong {
    color: #2B6CB0;
}

.warning-box {
    background: #FFFFF0;
    border-left: 4px solid var(--color-secondary);
    padding: 1.2rem 1.5rem;
    border-radius: 0 var(--radius) var(--radius) 0;
    margin: 2rem 0;
}

.success-box {
    background: #F0FFF4;
    border-left: 4px solid #38A169;
    padding: 1.2rem 1.5rem;
    border-radius: 0 var(--radius) var(--radius) 0;
    margin: 2rem 0;
}

/* Tablas */
.article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 2rem 0;
    font-size: 0.95rem;
    box-shadow: var(--shadow-sm);
    border-radius: var(--radius);
    overflow: hidden;
}

.article-content table thead {
    background: var(--color-primary);
    color: white;
}

.article-content table th {
    padding: 0.8rem 1rem;
    text-align: left;
    font-weight: 600;
}

.article-content table td {
    padding: 0.8rem 1rem;
    border-bottom: 1px solid var(--color-border);
}

.article-content table tbody tr:nth-child(even) {
    background: var(--color-bg);
}

.article-content table tbody tr:hover {
    background: #EDF2F7;
}

/* Fórmulas */
.formula-box {
    background: #F7FAFC;
    border: 2px dashed #CBD5E0;
    padding: 1.5rem;
    border-radius: var(--radius);
    margin: 2rem 0;
    text-align: center;
}

.formula {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-primary);
    background: white;
    padding: 1rem;
    border-radius: 8px;
    display: inline-block;
}

/* Imágenes */
.article-image {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    margin: 2rem 0;
}

.image-caption {
    text-align: center;
    font-size: 0.9rem;
    color: var(--color-text-light);
    margin-top: 0.5rem;
    font-style: italic;
}

/* CTA */
.cta-box {
    background: linear-gradient(135deg, #16233F 0%, #1F3360 100%);
    color: white;
    padding: 2rem;
    border-radius: var(--radius);
    text-align: center;
    margin: 3rem 0 1rem;
}

.cta-box h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: white;
    margin: 0 0 0.8rem;
}

.cta-box p {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 1.5rem;
}

.cta-button {
    display: inline-block;
    background: var(--color-secondary);
    color: var(--color-primary);
    padding: 0.8rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: transform 0.2s, box-shadow 0.2s;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(255, 215, 0, 0.3);
}

/* Compartir */
.share-section {
    text-align: center;
    padding: 1.5rem;
    border-top: 1px solid var(--color-border);
    margin-top: 3rem;
}

.share-section p {
    font-weight: 600;
    margin-bottom: 1rem;
}

.share-buttons {
    display: flex;
    gap: 0.8rem;
    justify-content: center;
}

.share-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.6rem 1.2rem;
    border-radius: 50px;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: background 0.2s;
}

.share-btn.whatsapp {
    background: #25D366;
    color: white;
}

.share-btn.facebook {
    background: #1877F2;
    color: white;
}

.share-btn.twitter {
    background: #000000;
    color: white;
}

.share-btn:hover {
    opacity: 0.9;
}

/* Responsive */
@media (max-width: 768px) {
    .blog-article {
        padding: 1rem 1rem 2rem;
    }

    .article-hero {
        padding: 2rem 1rem 1.5rem;
    }

    .article-hero h1 {
        font-size: 1.6rem;
    }

    .article-content table {
        font-size: 0.85rem;
    }

    .article-content table th,
    .article-content table td {
        padding: 0.5rem;
    }
}

/* Print styles */
@media print {

    .share-section,
    .cta-box {
        display: none;
    }
}