/* ============================================================
   public/css/blog.css
   Estilos compartidos del blog (listado + artículos)
   v1.0 — Nivel empresarial
   ============================================================ */

/* ═══════════════════════════════════════════════════════════
   1. BASE
   ═══════════════════════════════════════════════════════════ */
body {
    background: var(--bg-canvas);
    color: var(--text-1);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 15px;
    line-height: 1.5;
    overflow-x: hidden;
    min-height: 100vh;
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body { cursor: auto; }
button, a { cursor: pointer; }

header {
    position: relative;
    top: auto;
    padding: 16px 5%;
    border-bottom: 1px solid var(--border-subtle);
    background: var(--bg-surface);
    z-index: 100;
}

main {
    display: block;
    min-height: 60vh;
}

/* ═══════════════════════════════════════════════════════════
   2. PRELOADER
   ═══════════════════════════════════════════════════════════ */
#preloader {
    position: fixed; inset: 0; z-index: 999999;
    background: var(--bg-canvas);
    display: flex; align-items: center; justify-content: center;
    flex-direction: column; gap: 20px;
    transition: opacity 0.35s ease, visibility 0.35s ease;
}
#preloader.hidden { opacity: 0; visibility: hidden; pointer-events: none; }

.preloader-logo {
    font-family: 'Instrument Serif', Georgia, serif;
    font-size: clamp(38px, 8vw, 64px);
    font-weight: 400;
    letter-spacing: -0.03em;
    background: linear-gradient(135deg, #E8C99A 0%, #D4AF7A 50%, #B8935A 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    opacity: 0;
    animation: preloaderLogoIn 0.7s cubic-bezier(0.16, 1, 0.3, 1) 0.1s forwards;
}
.preloader-tagline {
    font-family: 'Space Grotesk', monospace;
    font-size: 10.5px;
    letter-spacing: 0.35em;
    text-transform: uppercase;
    color: rgba(245, 242, 237, 0.45);
    opacity: 0;
    animation: preloaderLogoIn 0.7s cubic-bezier(0.16, 1, 0.3, 1) 0.25s forwards;
}
.preloader-spinner {
    width: 44px; height: 44px; border-radius: 50%;
    border: 2px solid rgba(212, 175, 122, 0.12);
    border-top-color: #E8C99A;
    animation: preloaderSpin 0.9s linear infinite;
    margin-top: 12px;
}
.preloader-bar {
    width: 180px; height: 2px;
    background: rgba(212, 175, 122, 0.12);
    border-radius: 2px; overflow: hidden; position: relative;
}
.preloader-bar::after {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(90deg, transparent, #E8C99A, #D4AF7A, transparent);
    transform: translateX(-100%);
    animation: preloaderBar 1.2s ease-in-out infinite;
}
@keyframes preloaderLogoIn { to { opacity: 1; } }
@keyframes preloaderSpin { to { transform: rotate(360deg); } }
@keyframes preloaderBar { 0% { transform: translateX(-100%); } 100% { transform: translateX(100%); } }

/* ═══════════════════════════════════════════════════════════
   3. HERO DEL LISTADO
   ═══════════════════════════════════════════════════════════ */
.blog-hero {
    padding: 80px 5% 60px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.blog-hero::before {
    content: '';
    position: absolute;
    top: -100px; left: 50%;
    transform: translateX(-50%);
    width: 600px; height: 600px;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 60%);
    opacity: 0.4;
    pointer-events: none;
    z-index: 0;
}

.blog-hero-inner {
    max-width: 720px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    gap: 16px;
    align-items: center;
}

.blog-hero-titulo {
    font-family: 'Instrument Serif', serif;
    font-size: clamp(36px, 5.5vw, 60px);
    font-weight: 400;
    line-height: 1.05;
    letter-spacing: -0.03em;
    color: var(--text-1);
    margin: 0;
}

.blog-hero-titulo em {
    font-style: italic;
    color: var(--accent);
}

.blog-hero-desc {
    font-size: 16px;
    line-height: 1.7;
    color: var(--text-2);
    margin: 0;
    max-width: 560px;
}

/* ═══════════════════════════════════════════════════════════
   4. GRID DEL LISTADO
   ═══════════════════════════════════════════════════════════ */
.blog-list-section {
    padding: 40px 5% 100px;
}

.blog-grid {
    max-width: 1100px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 28px;
    content-visibility: auto;
}

.blog-card {
    display: flex;
    flex-direction: column;
    background: var(--bg-surface);
    border: 1px solid var(--border-default);
    border-radius: var(--r-xl);
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    transition: all 0.3s var(--ease);
    will-change: transform, box-shadow;
}

.blog-card:hover,
.blog-card:focus-visible {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--border-accent);
    outline: none;
}

.blog-card:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 4px;
}

.blog-card-imagen {
    position: relative;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: var(--bg-elevated);
}

.blog-card-imagen img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    aspect-ratio: 16 / 10;
    transition: transform 0.5s var(--ease-out);
}

.blog-card:hover .blog-card-imagen img,
.blog-card:focus-visible .blog-card-imagen img {
    transform: scale(1.06);
}

.blog-card-badge {
    position: absolute;
    top: 14px;
    left: 14px;
    padding: 6px 12px;
    background: var(--accent);
    color: var(--bg-canvas);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    border-radius: var(--r-pill);
    box-shadow: 0 4px 12px var(--accent-glow);
}

.blog-card-body {
    padding: 22px 24px 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    flex: 1;
}

.blog-card-meta {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 11.5px;
    color: var(--text-3);
    font-weight: 500;
    letter-spacing: 0.02em;
    flex-wrap: wrap;
}

.blog-card-meta .icon-svg {
    font-size: 12px;
    color: var(--accent);
}

.blog-card-meta-sep {
    color: var(--text-4);
    font-size: 12px;
    user-select: none;
}

.blog-card-titulo {
    font-family: 'Instrument Serif', serif;
    font-size: 22px;
    font-weight: 400;
    line-height: 1.2;
    letter-spacing: -0.02em;
    color: var(--text-1);
    margin: 0;
}

.blog-card-desc {
    font-size: 14px;
    line-height: 1.65;
    color: var(--text-2);
    margin: 0;
    flex: 1;
}

.blog-card-cta {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    font-weight: 600;
    color: var(--accent);
    margin-top: 6px;
    transition: gap 0.2s var(--ease);
}

.blog-card:hover .blog-card-cta,
.blog-card:focus-visible .blog-card-cta {
    gap: 10px;
}

/* ═══════════════════════════════════════════════════════════
   5. ARTÍCULO INDIVIDUAL
   ═══════════════════════════════════════════════════════════ */
.article-main {
    max-width: 760px;
    margin: 0 auto;
    padding: 60px 5% 80px;
}

.article-header {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 40px;
}

.article-breadcrumb {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 12.5px;
    color: var(--text-3);
    font-weight: 500;
    flex-wrap: wrap;
}

.article-breadcrumb a {
    color: var(--text-3);
    text-decoration: none;
    transition: color 0.2s ease;
}

.article-breadcrumb a:hover {
    color: var(--accent);
}

.article-breadcrumb .icon-svg {
    font-size: 11px;
    color: var(--text-4);
}

.article-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: var(--accent-glow);
    border: 1px solid var(--border-accent);
    border-radius: var(--r-pill);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent);
    width: fit-content;
}

.article-titulo {
    font-family: 'Instrument Serif', serif;
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 400;
    line-height: 1.1;
    letter-spacing: -0.03em;
    color: var(--text-1);
    margin: 0;
}

.article-titulo em {
    font-style: italic;
    color: var(--accent);
}

.article-desc {
    font-size: 17px;
    line-height: 1.7;
    color: var(--text-2);
    margin: 0;
}

.article-meta {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
    font-size: 12.5px;
    color: var(--text-3);
    padding-top: 20px;
    border-top: 1px solid var(--border-subtle);
}

.article-meta-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.article-meta-item .icon-svg {
    font-size: 13px;
    color: var(--accent);
}

.article-meta-sep {
    color: var(--text-4);
    font-size: 13px;
    user-select: none;
}

.article-imagen {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    border-radius: var(--r-xl);
    margin-bottom: 40px;
    background: var(--bg-elevated);
    display: block;
}

/* ─── Contenido ─── */
.article-contenido {
    display: flex;
    flex-direction: column;
    gap: 24px;
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-2);
}

.article-contenido h2 {
    font-family: 'Instrument Serif', serif;
    font-size: clamp(24px, 3.2vw, 32px);
    font-weight: 400;
    line-height: 1.15;
    letter-spacing: -0.025em;
    color: var(--text-1);
    margin: 24px 0 0;
    scroll-margin-top: 20px;
}

.article-contenido h2 em {
    font-style: italic;
    color: var(--accent);
}

.article-contenido h3 {
    font-family: 'Instrument Serif', serif;
    font-size: clamp(18px, 2.4vw, 22px);
    font-weight: 400;
    line-height: 1.25;
    letter-spacing: -0.015em;
    color: var(--text-1);
    margin: 20px 0 0;
}

.article-contenido p {
    margin: 0;
}

.article-contenido strong {
    color: var(--text-1);
    font-weight: 600;
}

.article-contenido em {
    font-style: italic;
    color: var(--accent-bright);
}

.article-contenido ul,
.article-contenido ol {
    margin: 0;
    padding-left: 24px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.article-contenido li {
    line-height: 1.7;
}

.article-contenido li::marker {
    color: var(--accent);
    font-weight: 700;
}

.article-contenido a {
    color: var(--accent);
    text-decoration: underline;
    text-underline-offset: 3px;
    transition: color 0.2s ease;
}

.article-contenido a:hover {
    color: var(--accent-bright);
}

/* ─── Callout / nota destacada ─── */
.article-callout {
    padding: 20px 24px;
    background: var(--bg-elevated);
    border-left: 4px solid var(--accent);
    border-radius: 0 var(--r-lg) var(--r-lg) 0;
    font-size: 15px;
    line-height: 1.7;
    color: var(--text-2);
    margin: 8px 0;
}

.article-callout strong {
    color: var(--text-1);
}

.article-callout--warning {
    border-left-color: var(--warning);
    background: var(--warning-bg);
}

.article-callout--success {
    border-left-color: var(--success);
    background: var(--success-bg);
}

/* ═══════════════════════════════════════════════════════════
   6. CTA FINAL DEL ARTÍCULO
   ═══════════════════════════════════════════════════════════ */
.article-cta {
    margin: 60px 0 40px;
    padding: 40px 32px;
    background: linear-gradient(135deg, rgba(212, 175, 122, 0.06), rgba(212, 175, 122, 0.02));
    border: 1px solid var(--border-accent);
    border-radius: var(--r-xl);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.article-cta::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
}

.article-cta-titulo {
    font-family: 'Instrument Serif', serif;
    font-size: clamp(24px, 3.5vw, 32px);
    font-weight: 400;
    line-height: 1.15;
    letter-spacing: -0.02em;
    color: var(--text-1);
    margin: 0 0 10px;
}

.article-cta-titulo em {
    font-style: italic;
    color: var(--accent);
}

.article-cta-desc {
    font-size: 14.5px;
    line-height: 1.6;
    color: var(--text-2);
    margin: 0 0 24px;
    max-width: 480px;
    margin-left: auto;
    margin-right: auto;
}

.article-cta-botones {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    justify-content: center;
}

.btn-cta-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 26px;
    min-height: 48px;
    border-radius: var(--r-md);
    background: var(--text-1);
    color: var(--bg-canvas);
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all 0.2s var(--ease);
    will-change: transform, box-shadow;
}

[data-theme="light"] .btn-cta-primary {
    background: #0F0F14;
    color: #FFFFFF;
}

.btn-cta-primary:hover,
.btn-cta-primary:focus-visible {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    outline: none;
}

.btn-cta-primary:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
}

/* ═══════════════════════════════════════════════════════════
   7. ARTÍCULOS RELACIONADOS
   ═══════════════════════════════════════════════════════════ */
.article-relacionados {
    margin-top: 40px;
    padding-top: 40px;
    border-top: 1px solid var(--border-subtle);
}

.article-relacionados-titulo {
    font-family: 'Instrument Serif', serif;
    font-size: 22px;
    font-weight: 400;
    letter-spacing: -0.02em;
    color: var(--text-1);
    margin: 0 0 20px;
}

.article-relacionados-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.article-rel-card {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 18px 20px;
    background: var(--bg-surface);
    border: 1px solid var(--border-default);
    border-radius: var(--r-lg);
    text-decoration: none;
    color: inherit;
    transition: all 0.2s var(--ease);
}

.article-rel-card:hover,
.article-rel-card:focus-visible {
    transform: translateY(-2px);
    border-color: var(--border-accent);
    box-shadow: var(--shadow-md);
    outline: none;
}

.article-rel-card:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
}

.article-rel-label {
    font-size: 10.5px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--accent);
    font-weight: 600;
}

.article-rel-titulo {
    font-family: 'Instrument Serif', serif;
    font-size: 17px;
    font-weight: 400;
    line-height: 1.3;
    letter-spacing: -0.015em;
    color: var(--text-1);
    margin: 0;
}

/* ═══════════════════════════════════════════════════════════
   8. FOOTER
   ═══════════════════════════════════════════════════════════ */
footer {
    padding: 32px 5%;
    text-align: center;
    border-top: 1px solid var(--border-subtle);
}
footer p { font-size: 12px; color: var(--text-3); }
footer p strong {
    color: var(--accent);
    font-family: 'Instrument Serif', serif;
    font-style: italic;
    font-size: 14px;
    font-weight: 400;
}

/* ═══════════════════════════════════════════════════════════
   9. RESPONSIVE
   ═══════════════════════════════════════════════════════════ */
@media (max-width: 768px) {
    header { padding: 12px 4%; gap: 8px; }
    .brand-name { font-size: 17px; }
    .brand-user { font-size: 9px; }
    .header-actions .btn span { display: none; }
    .header-actions .btn { padding: 9px 12px; }
    .header-actions .icon-btn { width: 38px; height: 38px; }

    .blog-hero { padding: 50px 5% 40px; }
    .blog-hero-titulo { font-size: 30px; }
    .blog-hero-desc { font-size: 15px; }

    .blog-list-section { padding: 30px 5% 60px; }
    .blog-grid { grid-template-columns: 1fr; gap: 20px; }
    .blog-card-body { padding: 18px 20px 20px; }
    .blog-card-titulo { font-size: 20px; }

    .article-main { padding: 40px 5% 60px; }
    .article-titulo { font-size: 28px; }
    .article-desc { font-size: 15px; }
    .article-contenido { font-size: 15px; gap: 20px; }
    .article-contenido h2 { font-size: 22px; }
    .article-contenido h3 { font-size: 17px; }

    .article-cta { padding: 28px 22px; }
    .article-cta-titulo { font-size: 22px; }
    .article-cta-botones { flex-direction: column; width: 100%; max-width: 320px; margin: 0 auto; }
    .article-cta-botones a { width: 100%; }

    .article-relacionados-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
    .blog-hero-titulo { font-size: 26px; }
    .article-titulo { font-size: 24px; }
    .article-meta { gap: 10px; font-size: 11.5px; }
    .article-callout { padding: 16px 18px; font-size: 14px; }
}

/* ═══════════════════════════════════════════════════════════
   10. REDUCED MOTION
   ═══════════════════════════════════════════════════════════ */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    .blog-card:hover,
    .article-rel-card:hover,
    .btn-cta-primary:hover { transform: none; }
    .blog-card:hover .blog-card-imagen img { transform: none; }
    #preloader { display: none !important; }
}