:root {
    --bg-main: #e9eef5; --bg-card: #ffffff; --text-primary: #0f172a; --text-secondary: #475569;
    --text-muted: #94a3b8; --color-stripe: #0f172a; --color-stripe-hover: #1e293b;
    --color-accent: #2563eb; --color-emerald: #059669; --color-rose: #e11d48;
    --border-color: #cbd5e1; --border-soft: #e2e8f0; --radius-lg: 16px; --radius-md: 10px;
    --shadow-sm: 0 1px 3px 0 rgba(15, 23, 42, 0.08), 0 1px 2px -1px rgba(15, 23, 42, 0.05);
    --shadow-md: 0 10px 15px -3px rgba(15, 23, 42, 0.10), 0 4px 6px -4px rgba(15, 23, 42, 0.08);
    --control-bg: #f8fafc;
    --control-bg-hover: #e9eef5;
    --control-color: #475569;
    --control-color-hover: #0f172a;
    --control-border: #cbd5e1;
    --control-border-hover: #94a3b8;
    --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; font-family: var(--font-sans); -webkit-font-smoothing: antialiased; }
html, body { overflow-x: hidden; max-width: 100%; }
body { background-color: var(--bg-main); color: var(--text-primary); line-height: 1.5; }

/* === ACCESIBILIDAD: focus visible global + skip link === */
*:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; border-radius: 4px; }
.skip-link { position: absolute; top: -100px; left: 0; background: var(--color-stripe); color: #fff; padding: 12px 20px; z-index: 10000; font-weight: 600; text-decoration: none; border-radius: 0 0 8px 0; transition: top 0.2s ease; }
.skip-link:focus { top: 0; outline: 2px solid #fff; outline-offset: -4px; }

.app-header { background-color: var(--bg-card); border-bottom: 1px solid var(--border-color); padding: 16px 24px; position: sticky; top:0; z-index: 100; box-shadow: var(--shadow-sm); }
.header-container { max-width: 1400px; margin: 0 auto; display: flex; align-items: center; gap: 12px; }
.header-container .badge { margin-right: auto; }
@media (max-width: 480px) { .header-container .badge { display: none; } }
.logo { font-size: clamp(18px, 3vw, 22px); font-weight: 800; letter-spacing: -0.5px; }
.logo-accent { color: var(--color-accent); }
.badge { background-color: #eff6ff; color: var(--color-accent); font-size: 12px; font-weight: 600; padding: 4px 10px; border-radius: 20px; white-space: nowrap; }

/* === HAMBURGUESA: oculta en escritorio, visible en móvil === */
.mobile-menu-toggle { display: none; background: var(--control-bg); border: 1px solid var(--control-border); cursor: pointer; padding: 8px; line-height: 1; color: var(--control-color); border-radius: 8px; min-height: 44px; min-width: 44px; transition: all 0.15s ease; }
.mobile-menu-toggle:hover { background-color: var(--control-bg-hover); color: var(--control-color-hover); border-color: var(--control-border-hover); }
.mobile-overlay { display: none; position: fixed; inset: 0; background: rgba(0, 0, 0, 0.45); z-index: 998; opacity: 0; transition: opacity 0.25s ease; }
body.sidebar-open { overflow: hidden; }
body.sidebar-open .mobile-overlay { display: block; opacity: 1; }

.layout-wrapper { max-width: 1400px; margin: 32px auto; padding: 0 24px; display: grid; grid-template-columns: 1fr; gap: 32px; }
@media (min-width: 1024px) { .layout-wrapper { grid-template-columns: 280px 1fr; align-items: start; } }

.sidebar-navigation { display: flex; flex-direction: column; gap: 24px; position: sticky; top: 88px; }
.sidebar-card { background-color: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius-lg); padding: 20px; box-shadow: var(--shadow-sm); }
.scrollable-nav { max-height: calc(100vh - 120px); overflow-y: auto; scrollbar-width: thin; }
.sidebar-card h3 { font-size: 12px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.8px; margin-bottom: 16px; font-weight: 700; }
.nav-divider { font-size: 11px; color: var(--text-muted); font-weight: 600; text-transform: uppercase; margin: 16px 0 8px 12px; }
.nav-menu { display: flex; flex-direction: column; gap: 4px; }
.nav-item { display: block; width: 100%; text-align: left; background: none; border: none; padding: 10px 14px; font-size: 14px; font-weight: 500; color: var(--text-secondary); border-radius: var(--radius-md); cursor: pointer; transition: all 0.2s; min-height: 44px; }
.nav-item:hover { background-color: #f3f4f6; color: var(--text-primary); }
.nav-item.active { background-color: #eff6ff; color: var(--color-accent); font-weight: 600; }

.welcome-banner h1 { font-size: clamp(24px, 5vw, 32px); font-weight: 800; letter-spacing: -1px; margin-bottom: 8px; }
.welcome-banner p { color: var(--text-secondary); font-size: 16px; margin-bottom: 32px; }

.tools-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; }

.tool-card { background-color: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius-lg); padding: 24px; cursor: pointer; transition: all 0.2s ease; box-shadow: var(--shadow-sm); display: flex; flex-direction: column; }
.tool-card:hover { transform: translateY(-4px); border-color: var(--color-accent); box-shadow: var(--shadow-md); }
.tool-icon { font-size: 36px; margin-bottom: 16px; }
.tool-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; color: var(--text-primary); }
.tool-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.5; }

.fade-in { animation: fadeIn 0.4s ease-in-out; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

.workspace-main-title { font-size: clamp(22px, 4vw, 28px); font-weight: 800; margin-bottom: 24px; letter-spacing: -0.5px; }
.btn-secondary { background: var(--control-bg); border: 1px solid var(--control-border); color: var(--text-primary); padding: 10px 16px; border-radius: var(--radius-md); font-size: 14px; font-weight: 600; cursor: pointer; margin-bottom: 24px; transition: all 0.15s ease; min-height: 44px; }
.btn-secondary:hover { background: var(--control-bg-hover); border-color: var(--control-border-hover); }

.summary-cards { display: grid; grid-template-columns: 1fr; gap: 20px; margin-bottom: 24px; }
@media (min-width: 640px) { .summary-cards { grid-template-columns: repeat(3, 1fr); } }
.card { background-color: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius-lg); padding: 24px; box-shadow: var(--shadow-sm); }
.card-summary h3 { font-size: 13px; color: var(--text-secondary); font-weight: 600; text-transform: uppercase; margin-bottom: 8px; letter-spacing: 0.5px; }
.metric-value { font-size: clamp(20px, 4vw, 28px); font-weight: 800; letter-spacing: -1px; }
.text-accent { color: var(--color-accent); }
.text-muted { color: var(--text-secondary); }
.text-slate { color: var(--color-emerald); }

.dashboard-grid { display: grid; grid-template-columns: 1fr; gap: 24px; }
@media (min-width: 768px) { .dashboard-grid { grid-template-columns: 360px 1fr; } }

.input-card h2, .chart-card h2 { font-size: 18px; font-weight: 700; margin-bottom: 20px; border-bottom: 1px solid var(--border-color); padding-bottom: 12px; }
.input-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }
.input-group label { font-size: 13px; font-weight: 600; color: var(--text-secondary); }
.input-group input { border: 1px solid var(--border-color); border-radius: var(--radius-md); padding: 12px 14px; min-height: 48px; font-size: 16px; background-color: #f9fafb; transition: all 0.2s; font-weight: 500; width: 100%; }
.input-group input:focus { outline: none; border-color: var(--color-accent); background-color: #fff; box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15); }

.btn-primary { width: 100%; min-height: 48px; background-color: var(--color-stripe); color: #fff; border: none; border-radius: var(--radius-md); padding: 14px; font-size: 16px; font-weight: 600; cursor: pointer; transition: all 0.2s; margin-top: 16px; box-shadow: var(--shadow-sm); }
.btn-primary:hover { background-color: var(--color-stripe-hover); transform: translateY(-1px); box-shadow: var(--shadow-md); }

.chart-container { position: relative; width: 100%; height: 350px; }

/* === ADSENSE SLOTS (formato estándar + anti-CLS) === */
.ad-slot, .adsense-slot { background-color: #f1f5f9; border: 1px dashed var(--text-muted); border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center; margin: 24px 0; color: var(--text-muted); font-size: 11px; text-transform: uppercase; letter-spacing: 1px; font-weight: 600; overflow: hidden; }
.ad-label { font-size: 11px; text-transform: uppercase; letter-spacing: 1px; color: var(--text-muted); font-weight: 600; }
.ad-horizontal, .adsense-top, .adsense-middle, .adsense-bottom { width: 100%; min-height: 90px; }
.ad-vertical, .adsense-sidebar { width: 100%; min-height: 600px; }
.adsense-top::before { content: 'Espacio publicitario'; }
.adsense-middle::before { content: 'Espacio publicitario'; }
.adsense-bottom::before { content: 'Espacio publicitario'; }
.adsense-sidebar::before { content: 'Espacio publicitario'; }
@media (max-width: 1023px) { .sidebar-navigation .ad-vertical, .sidebar-navigation .adsense-sidebar { display: none; } }

.seo-article { margin-top: 40px; padding-top: 32px; border-top: 1px solid var(--border-color); }
.seo-article h2 { font-size: clamp(20px, 3vw, 24px); font-weight: 800; margin-bottom: 16px; letter-spacing: -0.5px; }
.seo-article h3 { font-size: clamp(16px, 2.5vw, 18px); font-weight: 700; margin: 24px 0 12px 0; }
.seo-article p { color: var(--text-secondary); font-size: 16px; margin-bottom: 16px; line-height: 1.7; }
.seo-article ul, .seo-article ol { color: var(--text-secondary); margin: 0 0 16px 24px; line-height: 1.7; }
.seo-article a { color: var(--color-accent); text-decoration: underline; }

.faq-section { margin-top: 32px; }
.faq-section h3 { font-size: clamp(15px, 2.2vw, 17px); margin-top: 20px; margin-bottom: 8px; color: var(--text-primary); }

.app-footer { text-align: center; padding: 40px 24px; border-top: 1px solid var(--border-color); background-color: var(--bg-card); color: var(--text-muted); font-size: 13px; margin-top: 64px; }
.hidden { display: none !important; }

/* === BOTÓN HAMBURGUESA MÓVIL con SVG === */
.mobile-menu-toggle svg { width: 22px; height: 22px; }

/* === SIDEBAR PROFESIONAL: punto en vez de emoji, tipografía mejorada === */
.sidebar-navigation .nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding-left: 14px;
    position: relative;
    letter-spacing: 0.1px;
}
.sidebar-navigation .nav-item::before {
    content: '';
    width: 5px;
    height: 5px;
    background-color: var(--text-muted);
    border-radius: 50%;
    flex-shrink: 0;
    transition: all 0.2s;
    opacity: 0.5;
}
.sidebar-navigation .nav-item:hover::before { opacity: 1; background-color: var(--text-primary); }
.sidebar-navigation .nav-item.active::before { background-color: var(--color-accent); opacity: 1; transform: scale(1.4); box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15); }
.sidebar-navigation .nav-item.active { font-weight: 600; }

/* Logo profesional en header — imagen SVG inline */
.logo-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: #0f172a;
    margin-right: 10px;
    flex-shrink: 0;
    vertical-align: middle;
}
.logo-mark svg { width: 20px; height: 20px; }
.logo { display: inline-flex; align-items: center; }

/* === MPA: compatibilidad de <a> con estilos heredados de <button> === */
.logo, .nav-item, .btn-secondary, .link-legal, .tool-card { text-decoration: none; }
.logo, .nav-item, .btn-secondary, .link-legal { color: inherit; }
.nav-item { color: var(--text-secondary); }
.nav-item.active { color: var(--color-accent); }
.link-legal { color: var(--color-accent); }
.btn-secondary { display: inline-block; }
.tool-card { color: inherit; }

/* === LEGAL SECTIONS === */
.legal-section { background: var(--bg-card); padding: 40px; border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); margin-bottom: 24px; }
.legal-section h2 { font-size: clamp(20px, 3vw, 24px); margin-bottom: 20px; font-weight: 800; border-bottom: 1px solid var(--border-color); padding-bottom: 16px; }
.legal-section h3 { font-size: clamp(16px, 2.5vw, 18px); margin: 20px 0 10px 0; font-weight: 700; }
.legal-section p { font-size: 15px; color: var(--text-secondary); margin-bottom: 16px; line-height: 1.7; }
.legal-section ul, .legal-section ol { color: var(--text-secondary); margin: 0 0 16px 24px; line-height: 1.7; font-size: 15px; }
.legal-section a { color: var(--color-accent); text-decoration: underline; }

/* === FOOTER LINKS === */
.footer-links { display: flex; justify-content: center; gap: 24px; margin-bottom: 16px; flex-wrap: wrap; }
.link-legal { background: none; border: none; color: var(--color-accent); cursor: pointer; font-size: 13px; font-weight: 600; padding: 8px; min-height: 44px; display: inline-flex; align-items: center; }
.link-legal:hover { text-decoration: underline; }

/* === COOKIE BANNER === */
.cookie-banner { position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%); width: 90%; max-width: 600px; background-color: var(--color-stripe); color: #fff; padding: 20px; border-radius: var(--radius-lg); box-shadow: var(--shadow-md); display: flex; flex-direction: column; gap: 16px; z-index: 9999; animation: slideUp 0.4s cubic-bezier(0.16, 1, 0.3, 1); }
@media (min-width: 640px) { .cookie-banner { flex-direction: row; align-items: center; justify-content: space-between; } }
.cookie-content h4 { font-size: 15px; font-weight: 700; margin-bottom: 4px; }
.cookie-content p { font-size: 12px; color: var(--text-muted); line-height: 1.4; margin: 0; }
.cookie-actions { display: flex; gap: 10px; flex-shrink: 0; }
.btn-cookie-primary { background-color: var(--color-emerald); color: #fff; border: none; padding: 10px 16px; border-radius: var(--radius-md); font-size: 13px; font-weight: 600; cursor: pointer; transition: background 0.2s; min-height: 44px; }
.btn-cookie-primary:hover { background-color: #059669; }
.btn-cookie-secondary { background-color: transparent; color: #fff; border: 1px solid var(--text-secondary); padding: 10px 16px; border-radius: var(--radius-md); font-size: 13px; font-weight: 600; cursor: pointer; transition: all 0.2s; min-height: 44px; }
.btn-cookie-secondary:hover { background-color: rgba(255, 255, 255, 0.1); }
@keyframes slideUp { from { transform: translate(-50%, 100%); opacity: 0; } to { transform: translate(-50%, 0); opacity: 1; } }

/* === RESPONSIVE TABLET (768-1023px): sidebar arriba como carrusel horizontal de píldoras === */
@media (max-width: 1023px) and (min-width: 768px) {
    .layout-wrapper { margin: 16px auto; padding: 0 16px; gap: 16px; }
    .sidebar-navigation { position: relative; top: auto; gap: 12px; }
    .sidebar-navigation .scrollable-nav { max-height: none; overflow: visible; padding: 14px 16px; }
    .sidebar-navigation .scrollable-nav h3 { margin-bottom: 10px; font-size: 10px; }
    .sidebar-navigation .nav-menu { flex-direction: row; overflow-x: auto; gap: 8px; padding-bottom: 6px; -webkit-overflow-scrolling: touch; }
    .sidebar-navigation .nav-menu::-webkit-scrollbar { height: 4px; }
    .sidebar-navigation .nav-menu::-webkit-scrollbar-thumb { background: #d1d5db; border-radius: 2px; }
    .sidebar-navigation .nav-item { flex-shrink: 0; padding: 8px 14px; white-space: nowrap; background-color: #f3f4f6; font-size: 13px; border-radius: 999px; min-height: 40px; display: inline-flex; align-items: center; }
    .sidebar-navigation .nav-item.active { background-color: #eff6ff; color: var(--color-accent); }
    .sidebar-navigation .nav-divider { flex-shrink: 0; align-self: center; margin: 0; padding: 0 8px 0 4px; font-size: 10px; border-left: 1px solid var(--border-color); white-space: nowrap; }
}

/* === RESPONSIVE MÓVIL (< 768px): sidebar oculto + hamburguesa + slide-in vertical + overlay === */
@media (max-width: 767px) {
    .layout-wrapper { margin: 16px auto; padding: 0 12px; gap: 16px; display: block; }
    .app-header { padding: 12px 16px; }
    .mobile-menu-toggle { display: inline-flex; align-items: center; justify-content: center; order: -1; }

    .sidebar-navigation { position: fixed; top: 0; left: 0; width: 86%; max-width: 320px; height: 100vh; background-color: var(--bg-card); z-index: 999; transform: translateX(-100%); transition: transform 0.3s ease; padding: 20px; overflow-y: auto; gap: 16px; box-shadow: 4px 0 24px rgba(0, 0, 0, 0.15); border-right: 1px solid var(--border-color); }
    body.sidebar-open .sidebar-navigation { transform: translateX(0); }
    .sidebar-navigation .scrollable-nav { max-height: none; padding: 0; border: none; box-shadow: none; background: transparent; }
    .sidebar-navigation .scrollable-nav h3 { font-size: 11px; }
    .sidebar-navigation .nav-menu { flex-direction: column; gap: 4px; }
    .sidebar-navigation .nav-item { min-height: 48px; padding: 12px 14px; font-size: 15px; display: flex; align-items: center; }
    .sidebar-navigation .ad-vertical, .sidebar-navigation .adsense-sidebar { display: none; }

    .main-dashboard { width: 100%; max-width: 100%; }

    .summary-cards { gap: 12px; }
    .card-summary h3 { font-size: 12px; }
    .card { padding: 16px; border-radius: 16px; }
    .input-card h2, .chart-card h2 { font-size: 16px; }
    .legal-section { padding: 24px 18px; }
    .legal-section h3 { font-size: 15px; }
    .legal-section p, .legal-section ul { font-size: 14px; }
    .chart-container { height: 280px; }
    .tool-card { padding: 20px; }
    .tool-icon { font-size: 30px; margin-bottom: 12px; }
    .tool-card h3 { font-size: 16px; }
    .seo-article p, .seo-article ul { font-size: 15px; line-height: 1.65; }
    .cookie-banner { bottom: 12px; width: calc(100% - 24px); padding: 14px; }
    .cookie-actions { gap: 8px; width: 100%; }
    .btn-cookie-primary, .btn-cookie-secondary { flex: 1; font-size: 12px; padding: 10px 12px; }
    .footer-links { gap: 14px; }
    .app-footer { padding: 28px 16px; }
    .app-footer p { font-size: 12px; }
    .badge { font-size: 10px; padding: 2px 6px; }
}

/* === FOR PRINT === */
@media print {
    .sidebar-navigation, .ad-slot, .adsense-slot, .cookie-banner, .mobile-menu-toggle, .btn-primary, .btn-secondary, .scroll-top-btn, .search-modal, .search-toggle, .share-buttons { display: none !important; }
    body { background: white; color: black; }
    .card, .legal-section { box-shadow: none; border: 1px solid #ddd; }
    a { color: #333; text-decoration: underline; }
    .layout-wrapper { grid-template-columns: 1fr; padding: 0; }
}

/* === DARK MODE === */
body.dark-mode {
    --bg-main: #0f172a;
    --bg-card: #1e293b;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --border-color: #334155;
    --color-stripe: #3b82f6;
    --color-stripe-hover: #2563eb;
    --control-bg: #1e293b;
    --control-bg-hover: #334155;
    --control-color: #cbd5e1;
    --control-color-hover: #f1f5f9;
    --control-border: #334155;
    --control-border-hover: #64748b;
}
body.dark-mode .input-group input { background-color: #0f172a; color: #f1f5f9; }
body.dark-mode .nav-item:hover { background-color: #334155; }
body.dark-mode .nav-item.active { background-color: #1e3a8a; color: #93c5fd; }
body.dark-mode .ad-slot, body.dark-mode .adsense-slot { background-color: #1e293b; border-color: #475569; }
/* btn-secondary, dark-mode-toggle, search-toggle, mobile-menu-toggle se gestionan automáticamente con las variables --control-* */
body.dark-mode .badge { background-color: #1e3a8a; color: #93c5fd; }
body.dark-mode .sidebar-navigation .nav-item { color: #cbd5e1; }
body.dark-mode .sidebar-navigation .nav-item.active { background-color: #1e3a8a; color: #93c5fd; }
body.dark-mode .search-modal-content { background: #1e293b; }
body.dark-mode .search-input-wrap input { color: #f1f5f9; }
body.dark-mode .search-result-item { color: #f1f5f9; border-color: #334155; }
body.dark-mode .search-result-item:hover { background-color: #334155; }
body.dark-mode .toc-box { background: #0f172a; border-color: #334155; }
body.dark-mode .callout { background: #0f172a; }
body.dark-mode .blog-card { background: #1e293b; }
body.dark-mode .blog-card-tag { background: #0f172a; }
body.dark-mode .author-card { background: #0f172a; border-color: #334155; }
body.dark-mode .comparison-table th { background: #0f172a; color: #cbd5e1; }
body.dark-mode .comparison-table tr:hover { background: #0f172a; }
body.dark-mode .comparison-table td { border-color: #334155; }
body.dark-mode .comparison-table .highlight-cell { background: #1e3a8a; color: #93c5fd; }
body.dark-mode .tool-card { background: #1e293b; border-color: #334155; }
body.dark-mode .tool-card:hover { border-color: var(--color-accent); }
body.dark-mode .share-btn { background: #0f172a; border-color: #334155; color: #f1f5f9; }
body.dark-mode .legal-section { background: #1e293b; }
body.dark-mode .publication-meta { color: #94a3b8; border-color: #334155; }
body.dark-mode .breadcrumbs a { color: #93c5fd; }
body.dark-mode .seo-article h2, body.dark-mode .seo-article h3 { color: #f1f5f9; }
body.dark-mode .seo-article p, body.dark-mode .seo-article li { color: #cbd5e1; }
body.dark-mode .legal-section h2, body.dark-mode .legal-section h3 { color: #f1f5f9; }
body.dark-mode .legal-section p, body.dark-mode .legal-section li { color: #cbd5e1; }
body.dark-mode .callout p { color: #cbd5e1; }
body.dark-mode .callout strong { color: #f1f5f9; }
body.dark-mode .toc-box ol { color: #cbd5e1; }
body.dark-mode .related-posts { border-top-color: #334155; }
body.dark-mode .welcome-banner h1 { color: #f1f5f9; }
body.dark-mode .welcome-banner p { color: #cbd5e1; }
body.dark-mode .workspace-main-title { color: #f1f5f9; }
body.dark-mode .card-summary h3 { color: #94a3b8; }
body.dark-mode .input-card h2, body.dark-mode .chart-card h2 { color: #f1f5f9; border-color: #334155; }
body.dark-mode .sidebar-card h3, body.dark-mode .sidebar-card { color: #cbd5e1; }
body.dark-mode .app-header { background-color: #1e293b; border-color: #334155; }
body.dark-mode .app-footer { background-color: #1e293b; color: #94a3b8; }
body.dark-mode .footer-links a, body.dark-mode .breadcrumbs a { color: #93c5fd; }
body.dark-mode .nav-divider { color: #64748b; }
body.dark-mode .logo, body.dark-mode .logo-accent { color: #f1f5f9; }
body.dark-mode .logo-accent { color: #60a5fa; }
body.dark-mode .scrollable-nav { scrollbar-color: #475569 #1e293b; }

/* Pulido final: micro-animaciones suaves */
body { transition: background-color 0.25s ease, color 0.25s ease; }
.card, .tool-card, .blog-card, .legal-section { transition: background-color 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease, transform 0.2s ease; }
.dark-mode-toggle svg, .search-toggle svg, .mobile-menu-toggle svg, .scroll-top-btn svg { transition: opacity 0.2s ease; }
.dark-mode-toggle { background: var(--control-bg); border: 1px solid var(--control-border); cursor: pointer; padding: 6px 10px; border-radius: 8px; min-height: 44px; min-width: 44px; color: var(--control-color); display: inline-flex; align-items: center; justify-content: center; transition: all 0.15s ease; }
.dark-mode-toggle:hover { background-color: var(--control-bg-hover); color: var(--control-color-hover); border-color: var(--control-border-hover); }
.dark-mode-toggle svg { width: 18px; height: 18px; }

/* === SCROLL TO TOP === */
.scroll-top-btn { position: fixed; bottom: 80px; right: 24px; width: 48px; height: 48px; border-radius: 50%; background: var(--color-stripe); color: white; border: none; cursor: pointer; box-shadow: var(--shadow-md); z-index: 100; opacity: 0; pointer-events: none; transform: translateY(20px); transition: all 0.3s ease; line-height: 1; display: flex; align-items: center; justify-content: center; }
.scroll-top-btn svg { width: 20px; height: 20px; }
.scroll-top-btn.visible { opacity: 1; pointer-events: auto; transform: translateY(0); }
.scroll-top-btn:hover { background: var(--color-stripe-hover); transform: translateY(-2px); }
@media (max-width: 767px) { .scroll-top-btn { bottom: 90px; right: 16px; width: 44px; height: 44px; } }

/* === SEARCH MODAL === */
.search-toggle { background: var(--control-bg); border: 1px solid var(--control-border); cursor: pointer; padding: 8px 18px; border-radius: 999px; min-height: 44px; color: var(--control-color); display: inline-flex; align-items: center; justify-content: center; gap: 8px; transition: all 0.15s ease; font-family: var(--font-sans); font-size: 14px; font-weight: 500; white-space: nowrap; }
.search-toggle:hover { background-color: var(--control-bg-hover); color: var(--control-color-hover); border-color: var(--control-border-hover); }
.search-toggle svg { width: 16px; height: 16px; }
@media (max-width: 480px) { .search-toggle { padding: 8px 12px; min-width: 44px; } .search-toggle .search-label { display: none; } }
.search-modal { position: fixed; inset: 0; background: rgba(0, 0, 0, 0.5); z-index: 9998; display: none; align-items: flex-start; justify-content: center; padding-top: 80px; }
.search-modal.open { display: flex; }
.search-modal-content { background: var(--bg-card); width: 90%; max-width: 600px; border-radius: var(--radius-lg); box-shadow: var(--shadow-md); overflow: hidden; }
.search-input-wrap { padding: 16px 20px; border-bottom: 1px solid var(--border-color); }
.search-input-wrap input { width: 100%; border: none; outline: none; font-size: 18px; background: transparent; color: var(--text-primary); min-height: 48px; font-family: var(--font-sans); }
.search-results { max-height: 60vh; overflow-y: auto; padding: 8px 0; }
.search-result-item { display: block; padding: 12px 20px; text-decoration: none; color: var(--text-primary); border-bottom: 1px solid var(--border-color); transition: background 0.15s; }
.search-result-item:hover, .search-result-item:focus { background-color: var(--bg-main); }
.search-result-item:last-child { border-bottom: none; }
.search-result-title { font-weight: 600; font-size: 15px; margin-bottom: 2px; }
.search-result-meta { font-size: 12px; color: var(--text-muted); }
.search-empty { padding: 24px; text-align: center; color: var(--text-muted); font-size: 14px; }

/* === SHARE BUTTONS === */
.share-buttons { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--border-color); }
.share-btn { background: var(--bg-main); border: 1px solid var(--border-color); padding: 8px 14px; border-radius: 8px; font-size: 13px; font-weight: 500; cursor: pointer; color: var(--text-primary); min-height: 40px; transition: all 0.2s; display: inline-flex; align-items: center; gap: 6px; }
.share-btn:hover { background: var(--color-accent); color: white; border-color: var(--color-accent); }

/* === AUTHOR CARD === */
.author-card { display: flex; gap: 16px; padding: 16px; background: var(--bg-main); border-radius: var(--radius-lg); border: 1px solid var(--border-color); margin: 24px 0; }
.author-avatar { width: 60px; height: 60px; border-radius: 50%; background: linear-gradient(135deg, var(--color-accent), var(--color-emerald)); display: flex; align-items: center; justify-content: center; color: white; font-size: 24px; font-weight: 700; flex-shrink: 0; }
.author-info { flex: 1; min-width: 0; }
.author-name { font-weight: 700; font-size: 15px; margin-bottom: 4px; }
.author-bio { font-size: 13px; color: var(--text-secondary); line-height: 1.5; margin-bottom: 6px; }
.author-meta { font-size: 12px; color: var(--text-muted); }

/* === BREADCRUMBS === */
.breadcrumbs { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; font-size: 13px; color: var(--text-muted); margin-bottom: 16px; }
.breadcrumbs a { color: var(--color-accent); text-decoration: none; }
.breadcrumbs a:hover { text-decoration: underline; }
.breadcrumbs span { color: var(--text-muted); }

/* === PUBLICATION META === */
.publication-meta { display: flex; gap: 16px; flex-wrap: wrap; font-size: 13px; color: var(--text-muted); margin-bottom: 24px; padding-bottom: 16px; border-bottom: 1px solid var(--border-color); }
.publication-meta span { display: inline-flex; align-items: center; gap: 6px; }

/* === BLOG ARTICLE GRID === */
.blog-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; margin: 24px 0; }
.blog-card { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius-lg); padding: 20px; transition: all 0.2s; text-decoration: none; color: inherit; display: flex; flex-direction: column; box-shadow: var(--shadow-sm); }
.blog-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--color-accent); }
.blog-card-tag { display: inline-block; background: var(--bg-main); color: var(--color-accent); font-size: 11px; font-weight: 700; padding: 4px 10px; border-radius: 12px; text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 12px; align-self: flex-start; }
.blog-card h3 { font-size: 17px; margin-bottom: 8px; line-height: 1.4; font-weight: 700; }
.blog-card p { color: var(--text-secondary); font-size: 14px; line-height: 1.55; margin-bottom: 12px; flex: 1; }
.blog-card-meta { font-size: 12px; color: var(--text-muted); margin-top: auto; }

/* === COMPARISON TABLE === */
.comparison-table-wrap { overflow-x: auto; margin: 16px 0; -webkit-overflow-scrolling: touch; }
.comparison-table { width: 100%; min-width: 500px; border-collapse: collapse; font-size: 14px; }
.comparison-table th, .comparison-table td { padding: 12px; text-align: left; border-bottom: 1px solid var(--border-color); }
.comparison-table th { background: var(--bg-main); font-weight: 700; font-size: 13px; text-transform: uppercase; color: var(--text-secondary); letter-spacing: 0.5px; }
.comparison-table tr:hover { background: var(--bg-main); }
.comparison-table .highlight-cell { background: #eff6ff; font-weight: 700; color: var(--color-accent); }

/* === TOC (Table of Contents) === */
.toc-box { background: var(--bg-main); border: 1px solid var(--border-color); border-radius: var(--radius-md); padding: 20px; margin: 24px 0; }
.toc-box h3 { font-size: 13px; text-transform: uppercase; letter-spacing: 0.5px; color: var(--text-secondary); margin-bottom: 12px; font-weight: 700; }
.toc-box ol { margin: 0 0 0 24px; padding: 0; color: var(--text-secondary); }
.toc-box ol a { color: var(--color-accent); text-decoration: none; font-size: 14px; line-height: 1.8; }
.toc-box ol a:hover { text-decoration: underline; }

/* === CALLOUT BOX === */
.callout { padding: 16px 20px; border-left: 4px solid var(--color-accent); background: var(--bg-main); border-radius: 8px; margin: 16px 0; }
.callout.success { border-color: var(--color-emerald); }
.callout.warning { border-color: #f59e0b; }
.callout.danger { border-color: var(--color-rose); }
.callout p { margin: 0; font-size: 14px; line-height: 1.6; color: var(--text-secondary); }
.callout strong { color: var(--text-primary); }

/* === READING PROGRESS BAR === */
.reading-progress { position: fixed; top: 0; left: 0; height: 3px; background: var(--color-accent); width: 0%; z-index: 9999; transition: width 0.1s linear; }

/* === RELATED POSTS WIDGET === */
.related-posts { margin-top: 48px; padding-top: 32px; border-top: 2px solid var(--border-color); }
.related-posts h2 { font-size: 20px; font-weight: 700; margin-bottom: 20px; }
.related-posts .blog-grid { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.related-posts .blog-card { padding: 18px; }
.related-posts .blog-card h3 { font-size: 15px; line-height: 1.4; margin-bottom: 0; }