/*
 * clarita stack. — Blog Styles
 * Versión: 1.0
 * Fecha: Febrero 2026
 * Brand: Minimalismo cálido / Warm minimalism
 * 
 * Paleta de colores:
 * - Ink: #191918 (texto principal)
 * - Warm White: #FAF9F5 (fondos)
 * - Sand: #E8E6DC (bordes, divisores)
 * - Stone: #B0AEA5 (texto secundario)
 * - Terracotta: #D97757 (acento, CTAs)
 * 
 * Tipografía:
 * - DM Sans: UI, cuerpo, navegación
 * - Instrument Serif: Marca, títulos editoriales
 */

/* ========================================
   RESET & BASE STYLES
   ======================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colores */
    --color-ink: #191918;
    --color-warm-white: #FAF9F5;
    --color-sand: #E8E6DC;
    --color-stone: #B0AEA5;
    --color-terracotta: #D97757;
    
    /* Tipografía */
    --font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Instrument Serif', Georgia, serif;
    
    /* Espaciado */
    --spacing-xs: 0.5rem;   /* 8px */
    --spacing-sm: 1rem;     /* 16px */
    --spacing-md: 2rem;     /* 32px */
    --spacing-lg: 4rem;     /* 64px */
    --spacing-xl: 6rem;     /* 96px */
    
    /* Containers */
    --container-max: 1200px;
    --container-narrow: 720px;
    
    /* Border radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
}

body {
    font-family: var(--font-body);
    font-size: 18px;
    line-height: 1.7;
    color: var(--color-ink);
    background-color: var(--color-warm-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ========================================
   TYPOGRAPHY
   ======================================== */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    line-height: 1.2;
    font-weight: 400;
    margin-bottom: var(--spacing-sm);
}

h1 { font-size: 3rem; }      /* 48px */
h2 { font-size: 2.25rem; }   /* 36px */
h3 { font-size: 1.75rem; }   /* 28px */
h4 { font-size: 1.5rem; }    /* 24px */
h5 { font-size: 1.25rem; }   /* 20px */
h6 { font-size: 1rem; }      /* 16px */

p {
    margin-bottom: var(--spacing-sm);
}

a {
    color: var(--color-terracotta);
    text-decoration: none;
    transition: opacity 0.2s ease;
}

a:hover {
    opacity: 0.7;
}

/* ========================================
   LAYOUT CONTAINERS
   ======================================== */

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.container-narrow {
    max-width: var(--container-narrow);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ========================================
   HEADER / NAVIGATION
   ======================================== */

.blog-header {
    background: var(--color-warm-white);
    border-bottom: 1px solid var(--color-sand);
    padding: var(--spacing-sm) 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo {
    font-family: var(--font-display);
    font-size: 1.5rem;
    color: var(--color-ink);
    font-style: italic;
}

.nav-links {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-links a {
    color: var(--color-stone);
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.2s ease;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--color-ink);
}

.cta-link {
    background: var(--color-terracotta);
    color: var(--color-warm-white) !important;
    padding: 0.5rem 1.25rem;
    border-radius: var(--radius-md);
}

.cta-link:hover {
    opacity: 0.9;
}

/* ========================================
   READING PROGRESS BAR
   ======================================== */

.reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--color-sand);
    z-index: 999;
}

.reading-progress-bar {
    height: 100%;
    background: var(--color-terracotta);
    width: 0%;
    transition: width 0.1s ease;
}

/* ========================================
   BREADCRUMBS
   ======================================== */

.breadcrumbs {
    padding: var(--spacing-sm) 0;
    font-size: 0.9rem;
    color: var(--color-stone);
}

.breadcrumbs a {
    color: var(--color-stone);
}

.breadcrumbs span {
    margin: 0 0.5rem;
}

/* ========================================
   BLOG HERO (INDEX PAGE)
   ======================================== */

.blog-hero {
    padding: var(--spacing-xl) 0 var(--spacing-lg);
    text-align: center;
    border-bottom: 1px solid var(--color-sand);
}

.blog-hero h1 {
    font-size: 3.5rem;
    margin-bottom: var(--spacing-md);
    line-height: 1.1;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--color-stone);
    max-width: 600px;
    margin: 0 auto;
}

/* ========================================
   POSTS GRID (INDEX PAGE)
   ======================================== */

.blog-posts {
    padding: var(--spacing-lg) 0;
}

.post-card {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    padding: var(--spacing-lg) 0;
    border-bottom: 1px solid var(--color-sand);
}

.post-card:last-child {
    border-bottom: none;
}

.post-image {
    overflow: hidden;
    border-radius: var(--radius-lg);
    aspect-ratio: 16 / 9;
}

.post-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.post-image:hover img {
    transform: scale(1.05);
}

.post-category {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-terracotta);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-xs);
}

.post-title {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.post-title a {
    color: var(--color-ink);
}

.post-excerpt {
    color: var(--color-stone);
    margin-bottom: var(--spacing-sm);
}

.post-meta {
    display: flex;
    gap: var(--spacing-sm);
    font-size: 0.9rem;
    color: var(--color-stone);
    margin-bottom: var(--spacing-sm);
}

.reading-time::before {
    content: "•";
    margin-right: var(--spacing-xs);
}

.read-more {
    display: inline-flex;
    align-items: center;
    font-weight: 600;
    color: var(--color-terracotta);
}

/* ========================================
   POST HEADER (INDIVIDUAL POST)
   ======================================== */

.post-header {
    padding: var(--spacing-lg) 0 var(--spacing-md);
    text-align: center;
}

.post-title {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.post-subtitle {
    font-size: 1.35rem;
    color: var(--color-stone);
    margin-bottom: var(--spacing-md);
    font-family: var(--font-body);
}

.post-meta-header {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-sand);
}

.author-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.author-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: 2px solid var(--color-sand);
}

.author-name {
    display: block;
    font-weight: 600;
    font-size: 0.95rem;
}

.post-meta-header time {
    display: block;
    font-size: 0.85rem;
    color: var(--color-stone);
}

/* ========================================
   POST HERO IMAGE
   ======================================== */

.post-hero-image {
    margin-bottom: var(--spacing-lg);
}

.post-hero-image img {
    width: 100%;
    height: auto;
    max-height: 600px;
    object-fit: cover;
}

/* ========================================
   POST BODY & CONTENT
   ======================================== */

.post-body {
    padding: var(--spacing-lg) 0;
}

.post-content {
    font-size: 1.125rem;
    line-height: 1.8;
}

.post-content .lead {
    font-size: 1.35rem;
    color: var(--color-stone);
    margin-bottom: var(--spacing-md);
}

.post-content h2 {
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-sand);
}

.post-content h2:first-of-type {
    border-top: none;
    padding-top: 0;
}

.post-content h3 {
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.post-content ul,
.post-content ol {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-md);
}

.post-content li {
    margin-bottom: var(--spacing-xs);
}

.post-content strong {
    font-weight: 600;
    color: var(--color-ink);
}

.post-content code {
    background: var(--color-sand);
    padding: 0.2em 0.5em;
    border-radius: var(--radius-sm);
    font-size: 0.9em;
    font-family: 'SF Mono', Monaco, monospace;
}

.post-content pre {
    background: var(--color-ink);
    color: var(--color-warm-white);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    overflow-x: auto;
    margin-bottom: var(--spacing-md);
}

.post-content pre code {
    background: transparent;
    padding: 0;
    color: inherit;
}

/* ========================================
   BLOCKQUOTE
   ======================================== */

blockquote {
    border-left: 4px solid var(--color-terracotta);
    padding-left: var(--spacing-md);
    margin: var(--spacing-md) 0;
    font-style: italic;
    color: var(--color-stone);
}

blockquote p {
    font-size: 1.25rem;
    line-height: 1.6;
}

blockquote cite {
    display: block;
    margin-top: var(--spacing-sm);
    font-size: 0.9rem;
    font-style: normal;
    color: var(--color-stone);
}

/* ========================================
   TABLES
   ======================================== */

.table-wrapper {
    overflow-x: auto;
    margin-bottom: var(--spacing-md);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.95rem;
}

thead {
    background: var(--color-sand);
}

th, td {
    padding: var(--spacing-sm);
    text-align: left;
    border-bottom: 1px solid var(--color-sand);
}

th {
    font-weight: 600;
    color: var(--color-ink);
}

/* ========================================
   IMAGES & FIGURES
   ======================================== */

.post-image {
    margin: var(--spacing-md) 0;
}

.post-image img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-md);
}

figcaption {
    margin-top: var(--spacing-xs);
    font-size: 0.9rem;
    color: var(--color-stone);
    text-align: center;
}

/* ========================================
   CALLOUT BOXES
   ======================================== */

.callout {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin: var(--spacing-md) 0;
}

.callout h4 {
    margin-bottom: var(--spacing-xs);
    font-size: 1.1rem;
}

.callout-warning {
    background: #FFF4E6;
    border-left: 4px solid #F59E0B;
}

.callout-success {
    background: #F0FDF4;
    border-left: 4px solid #22C55E;
}

.callout-info {
    background: #EFF6FF;
    border-left: 4px solid #3B82F6;
}

/* ========================================
   TABLE OF CONTENTS (TOC)
   ======================================== */

.table-of-contents {
    position: sticky;
    top: 100px;
    max-width: 200px;
    margin-right: var(--spacing-lg);
    float: left;
}

.table-of-contents h4 {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    font-family: var(--font-body);
}

.table-of-contents nav {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.table-of-contents a {
    font-size: 0.85rem;
    color: var(--color-stone);
    padding: 0.3rem 0;
    border-left: 2px solid transparent;
    padding-left: var(--spacing-sm);
    transition: all 0.2s ease;
}

.table-of-contents a:hover {
    color: var(--color-terracotta);
    border-left-color: var(--color-terracotta);
}

/* ========================================
   CTA BOXES
   ======================================== */

.cta-inline {
    background: linear-gradient(135deg, var(--color-sand) 0%, var(--color-warm-white) 100%);
    border: 2px solid var(--color-terracotta);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    margin: var(--spacing-lg) 0;
    text-align: center;
}

.cta-inline h4 {
    margin-bottom: var(--spacing-sm);
}

.cta-inline p {
    color: var(--color-stone);
    margin-bottom: var(--spacing-md);
}

.btn-secondary {
    display: inline-block;
    background: var(--color-terracotta);
    color: var(--color-warm-white);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: opacity 0.2s ease;
}

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

.post-cta {
    background: var(--color-ink);
    color: var(--color-warm-white);
    padding: var(--spacing-lg) 0;
    margin: var(--spacing-xl) 0;
}

.cta-box {
    text-align: center;
}

.cta-box h3 {
    color: var(--color-warm-white);
    margin-bottom: var(--spacing-sm);
}

.cta-box p {
    color: rgba(250, 249, 245, 0.7);
    margin-bottom: var(--spacing-md);
}

.cta-form {
    display: flex;
    gap: var(--spacing-sm);
    max-width: 500px;
    margin: 0 auto var(--spacing-sm);
}

.cta-form input {
    flex: 1;
    padding: 0.75rem 1rem;
    border: 1px solid rgba(250, 249, 245, 0.2);
    background: rgba(250, 249, 245, 0.1);
    color: var(--color-warm-white);
    border-radius: var(--radius-md);
    font-size: 1rem;
}

.cta-form input::placeholder {
    color: rgba(250, 249, 245, 0.5);
}

.cta-form button {
    background: var(--color-terracotta);
    color: var(--color-warm-white);
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.2s ease;
}

.cta-form button:hover {
    opacity: 0.9;
}

.form-disclaimer {
    font-size: 0.85rem;
    color: rgba(250, 249, 245, 0.6);
}

/* ========================================
   SHARE BUTTONS
   ======================================== */

.post-share {
    padding: var(--spacing-lg) 0;
    border-top: 1px solid var(--color-sand);
}

.post-share h4 {
    margin-bottom: var(--spacing-md);
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
}

.share-buttons {
    display: flex;
    gap: var(--spacing-sm);
}

.share-btn {
    display: inline-flex;
    align-items: center;
    padding: 0.6rem 1.2rem;
    border: 1px solid var(--color-sand);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-ink);
    background: var(--color-warm-white);
    cursor: pointer;
    transition: all 0.2s ease;
}

.share-btn:hover {
    background: var(--color-sand);
    opacity: 1;
}

/* ========================================
   AUTHOR BOX
   ======================================== */

.author-box {
    background: var(--color-sand);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    margin: var(--spacing-lg) 0;
}

.author-box .container-narrow {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.author-box-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    border: 3px solid var(--color-warm-white);
}

.author-box h4 {
    margin-bottom: var(--spacing-xs);
    font-family: var(--font-body);
    font-size: 1.1rem;
}

.author-box p {
    color: var(--color-stone);
    margin-bottom: var(--spacing-sm);
}

.author-contact {
    font-weight: 600;
    color: var(--color-terracotta);
}

/* ========================================
   RELATED POSTS
   ======================================== */

.related-posts {
    padding: var(--spacing-lg) 0;
    background: var(--color-sand);
}

.related-posts h3 {
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.related-posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.related-post-card img {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-sm);
}

.related-post-card h4 {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-xs);
    font-family: var(--font-body);
}

.related-post-card a {
    color: var(--color-ink);
}

.related-post-card .reading-time {
    font-size: 0.85rem;
    color: var(--color-stone);
}

/* ========================================
   NEWSLETTER SECTION
   ======================================== */

.newsletter-section {
    padding: var(--spacing-xl) 0;
    background: var(--color-sand);
}

.newsletter-box {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.newsletter-box h3 {
    margin-bottom: var(--spacing-sm);
}

.newsletter-box p {
    color: var(--color-stone);
    margin-bottom: var(--spacing-md);
}

.newsletter-form {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.newsletter-form input {
    flex: 1;
    padding: 0.75rem 1rem;
    border: 1px solid var(--color-sand);
    background: var(--color-warm-white);
    border-radius: var(--radius-md);
    font-size: 1rem;
}

.newsletter-form button {
    background: var(--color-terracotta);
    color: var(--color-warm-white);
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.2s ease;
}

.newsletter-form button:hover {
    opacity: 0.9;
}

.newsletter-disclaimer {
    font-size: 0.85rem;
    color: var(--color-stone);
}

.newsletter-disclaimer a {
    text-decoration: underline;
}

/* ========================================
   FOOTER
   ======================================== */

.blog-footer {
    background: var(--color-ink);
    color: var(--color-warm-white);
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid rgba(250, 249, 245, 0.1);
}

.footer-brand h4 {
    font-family: var(--font-display);
    font-style: italic;
    margin-bottom: var(--spacing-sm);
}

.footer-brand p {
    color: rgba(250, 249, 245, 0.7);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

.footer-column h5 {
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.footer-column a {
    display: block;
    color: rgba(250, 249, 245, 0.7);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-xs);
}

.footer-column a:hover {
    color: var(--color-warm-white);
    opacity: 1;
}

.footer-bottom {
    text-align: center;
    font-size: 0.85rem;
    color: rgba(250, 249, 245, 0.5);
}

.footer-bottom p {
    margin-bottom: var(--spacing-xs);
}

/* ========================================
   RESPONSIVE - MOBILE
   ======================================== */

@media (max-width: 768px) {
    h1 { font-size: 2.25rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.35rem; }
    
    .blog-hero h1 {
        font-size: 2.5rem;
    }
    
    .hero-description {
        font-size: 1.1rem;
    }
    
    .post-title {
        font-size: 2rem;
    }
    
    .post-subtitle {
        font-size: 1.1rem;
    }
    
    .post-card {
        gap: var(--spacing-sm);
    }
    
    .nav-links {
        gap: var(--spacing-sm);
    }
    
    .cta-link {
        padding: 0.4rem 1rem;
        font-size: 0.85rem;
    }
    
    .table-of-contents {
        display: none;
    }
    
    .post-meta-header {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .cta-form,
    .newsletter-form {
        flex-direction: column;
    }
    
    .share-buttons {
        flex-wrap: wrap;
    }
    
    .author-box .container-narrow {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
    
    .related-posts-grid {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   RESPONSIVE - TABLET
   ======================================== */

@media (min-width: 769px) and (max-width: 1024px) {
    .post-card {
        grid-template-columns: 300px 1fr;
    }
    
    .table-of-contents {
        max-width: 180px;
    }
}

/* ========================================
   PRINT STYLES
   ======================================== */

@media print {
    .blog-header,
    .breadcrumbs,
    .table-of-contents,
    .post-cta,
    .post-share,
    .related-posts,
    .newsletter-section,
    .blog-footer,
    .reading-progress {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
}