/* ==========================================================================
   Credimex — Hoja de estilos principal
   Mobile-first, sin dependencias, sin !important.
   ========================================================================== */

:root {
    /* Paleta */
    --color-primario: #1e40af;
    --color-primario-oscuro: #1e3a8a;
    --color-primario-claro: #3b82f6;
    --color-secundario: #059669;
    --color-secundario-oscuro: #047857;
    --color-acento: #fbbf24;
    --color-fondo: #ffffff;
    --color-fondo-alt: #f9fafb;
    --color-fondo-muted: #f3f4f6;
    --color-borde: #e5e7eb;
    --color-texto: #1f2937;
    --color-texto-muted: #6b7280;
    --color-texto-claro: #9ca3af;
    --color-exito: #10b981;
    --color-advertencia: #f59e0b;
    --color-error: #ef4444;

    /* Tipografía */
    --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-base: 16px;
    --line-base: 1.6;
    --line-heading: 1.25;

    /* Espaciado */
    --sp-1: 0.25rem;
    --sp-2: 0.5rem;
    --sp-3: 0.75rem;
    --sp-4: 1rem;
    --sp-5: 1.25rem;
    --sp-6: 1.5rem;
    --sp-8: 2rem;
    --sp-10: 2.5rem;
    --sp-12: 3rem;
    --sp-16: 4rem;

    /* Contenedor */
    --container-max: 1200px;
    --container-narrow: 780px;

    /* Bordes y sombras */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --shadow-sm: 0 1px 3px rgba(17, 24, 39, 0.08);
    --shadow-md: 0 4px 12px rgba(17, 24, 39, 0.08);
    --shadow-lg: 0 12px 32px rgba(17, 24, 39, 0.12);

    --transition: 200ms ease;
}

/* Reset ------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
    margin: 0;
    font-family: var(--font-sans);
    font-size: var(--font-base);
    line-height: var(--line-base);
    color: var(--color-texto);
    background: var(--color-fondo);
}
img, svg { max-width: 100%; height: auto; display: block; }
h1, h2, h3, h4, h5, h6 { line-height: var(--line-heading); margin: 0 0 var(--sp-4); color: var(--color-texto); }
h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; margin-top: var(--sp-10); }
h3 { font-size: 1.2rem; margin-top: var(--sp-6); }
p { margin: 0 0 var(--sp-4); }
a { color: var(--color-primario); text-decoration: underline; text-underline-offset: 3px; }
a:hover { color: var(--color-primario-oscuro); }
ul, ol { padding-left: var(--sp-6); margin: 0 0 var(--sp-4); }
ul li, ol li { margin-bottom: var(--sp-2); }
table { border-collapse: collapse; width: 100%; }
hr { border: none; border-top: 1px solid var(--color-borde); margin: var(--sp-8) 0; }

/* Utilidades --------------------------------------------------------------- */
.container { width: 100%; max-width: var(--container-max); margin: 0 auto; padding: 0 var(--sp-4); }
.container-narrow { max-width: var(--container-narrow); }
.text-center { text-align: center; }
.visually-hidden {
    position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}
.skip-link {
    position: absolute; top: -40px; left: 0;
    background: var(--color-primario); color: #fff; padding: var(--sp-2) var(--sp-4);
    z-index: 1000; text-decoration: none;
}
.skip-link:focus { top: 0; color: #fff; }

/* Cabecera ---------------------------------------------------------------- */
.site-header {
    background: var(--color-fondo);
    border-bottom: 1px solid var(--color-borde);
    position: sticky; top: 0; z-index: 100;
}
.header-inner { display: flex; align-items: center; justify-content: space-between; padding-top: var(--sp-3); padding-bottom: var(--sp-3); }
.logo img { height: 36px; width: auto; }
.nav-toggle {
    background: transparent; border: 0; cursor: pointer;
    padding: var(--sp-2); display: flex; flex-direction: column; gap: 4px;
}
.nav-toggle-bar { width: 24px; height: 2px; background: var(--color-texto); border-radius: 2px; transition: var(--transition); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.nav-main { display: none; }
.nav-main.is-open { display: block; position: absolute; top: 100%; left: 0; right: 0; background: var(--color-fondo); border-bottom: 1px solid var(--color-borde); box-shadow: var(--shadow-md); }
.nav-main ul { list-style: none; margin: 0; padding: var(--sp-2) 0; }
.nav-main li { margin: 0; }
.nav-main a {
    display: block; padding: var(--sp-3) var(--sp-4);
    text-decoration: none; color: var(--color-texto); font-weight: 500;
}
.nav-main a:hover, .nav-main a:focus { background: var(--color-fondo-muted); color: var(--color-primario); }

/* Main & secciones -------------------------------------------------------- */
.site-main { min-height: 60vh; padding: var(--sp-6) 0; }
.site-main > .container > h1:first-child { margin-top: 0; }

/* Hero -------------------------------------------------------------------- */
.hero {
    background: linear-gradient(135deg, var(--color-primario) 0%, var(--color-primario-oscuro) 100%);
    color: #fff;
    padding: var(--sp-12) 0;
    margin-bottom: var(--sp-10);
}
.hero h1 { color: #fff; font-size: 2.25rem; margin-bottom: var(--sp-4); }
.hero p { font-size: 1.15rem; opacity: 0.95; margin-bottom: var(--sp-6); }
.hero-cta { display: flex; gap: var(--sp-3); flex-wrap: wrap; }
.hero a { color: #fff; }

/* Secciones home ---------------------------------------------------------- */
.section { margin: var(--sp-12) 0; }
.section-title { font-size: 1.75rem; margin-bottom: var(--sp-2); }
.section-lead { color: var(--color-texto-muted); margin-bottom: var(--sp-8); max-width: 700px; }

.section-light { background: var(--color-fondo-alt); padding: var(--sp-12) 0; }

/* Grid de cards ----------------------------------------------------------- */
.cards-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--sp-6);
}

/* Card -------------------------------------------------------------------- */
.card {
    background: var(--color-fondo);
    border: 1px solid var(--color-borde);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: transform var(--transition), box-shadow var(--transition);
    display: flex; flex-direction: column;
}
.card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.card-link { display: flex; flex-direction: column; text-decoration: none; color: inherit; height: 100%; }
.card-image { background: var(--color-fondo-muted); aspect-ratio: 400 / 250; overflow: hidden; }
.card-image img { width: 100%; height: 100%; object-fit: cover; }
.card-body { padding: var(--sp-5); flex: 1; display: flex; flex-direction: column; }
.card-emisor { font-size: 0.85rem; color: var(--color-texto-muted); text-transform: uppercase; letter-spacing: 0.03em; margin-bottom: var(--sp-1); }
.card-title { font-size: 1.15rem; margin: 0 0 var(--sp-3); color: var(--color-texto); }
.card-description { color: var(--color-texto-muted); font-size: 0.95rem; flex: 1; margin-bottom: var(--sp-4); }
.card-stats {
    display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-3);
    margin: 0 0 var(--sp-4); padding: var(--sp-3); background: var(--color-fondo-alt); border-radius: var(--radius-sm);
}
.card-stats dt { font-size: 0.75rem; color: var(--color-texto-muted); text-transform: uppercase; letter-spacing: 0.03em; }
.card-stats dd { margin: 0; font-weight: 600; color: var(--color-texto); font-size: 0.95rem; }
.card-cta { color: var(--color-primario); font-weight: 600; font-size: 0.9rem; }

/* Botones ----------------------------------------------------------------- */
.btn {
    display: inline-block; padding: var(--sp-3) var(--sp-6);
    border-radius: var(--radius-sm); font-weight: 600; text-decoration: none;
    border: 2px solid transparent; cursor: pointer;
    transition: background var(--transition), color var(--transition), border-color var(--transition);
    font-size: 1rem;
}
.btn-primary { background: var(--color-primario); color: #fff; border-color: var(--color-primario); }
.btn-primary:hover { background: var(--color-primario-oscuro); border-color: var(--color-primario-oscuro); color: #fff; }
.btn-secondary { background: var(--color-secundario); color: #fff; border-color: var(--color-secundario); }
.btn-secondary:hover { background: var(--color-secundario-oscuro); border-color: var(--color-secundario-oscuro); color: #fff; }
.btn-ghost { background: transparent; color: var(--color-texto); border-color: var(--color-borde); }
.btn-ghost:hover { background: var(--color-fondo-muted); }
.btn-outline { background: transparent; color: var(--color-primario); border-color: var(--color-primario); }
.btn-outline:hover { background: var(--color-primario); color: #fff; }

/* CTA bloques ------------------------------------------------------------- */
.cta-bloque {
    margin: var(--sp-8) 0;
    padding: var(--sp-6);
    background: var(--color-fondo-alt);
    border-left: 4px solid var(--color-primario);
    border-radius: var(--radius-sm);
}
.cta-externo { border-left-color: var(--color-secundario); }
.cta-nota { font-size: 0.9rem; color: var(--color-texto-muted); margin-bottom: var(--sp-3); }

/* Breadcrumbs ------------------------------------------------------------- */
.breadcrumbs { margin: 0 0 var(--sp-6); font-size: 0.9rem; color: var(--color-texto-muted); }
.breadcrumbs ol { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: var(--sp-2); }
.breadcrumbs li { margin: 0; }
.breadcrumbs li + li::before { content: "›"; margin-right: var(--sp-2); color: var(--color-texto-claro); }
.breadcrumbs a { color: var(--color-texto-muted); text-decoration: none; }
.breadcrumbs a:hover { color: var(--color-primario); text-decoration: underline; }

/* Tabla de producto ------------------------------------------------------- */
.producto-tabla {
    width: 100%; border: 1px solid var(--color-borde); border-radius: var(--radius-md);
    overflow: hidden; margin: var(--sp-6) 0; font-size: 0.95rem;
}
.producto-tabla caption {
    font-weight: 600; padding: var(--sp-4); text-align: left;
    background: var(--color-primario); color: #fff;
    caption-side: top;
}
.producto-tabla th, .producto-tabla td { padding: var(--sp-3) var(--sp-4); text-align: left; border-bottom: 1px solid var(--color-borde); }
.producto-tabla th { background: var(--color-fondo-alt); font-weight: 600; width: 40%; }
.producto-tabla tr:last-child th, .producto-tabla tr:last-child td { border-bottom: 0; }
.tabla-nota { font-size: 0.85rem; color: var(--color-texto-muted); font-style: italic; margin-top: calc(var(--sp-4) * -0.5); }

/* FAQs (details/summary) -------------------------------------------------- */
.faqs { margin: var(--sp-10) 0; }
.faq-list { display: flex; flex-direction: column; gap: var(--sp-3); }
.faq-item { border: 1px solid var(--color-borde); border-radius: var(--radius-sm); background: var(--color-fondo); }
.faq-item summary {
    padding: var(--sp-4); cursor: pointer; font-weight: 600; list-style: none;
    display: flex; justify-content: space-between; gap: var(--sp-4);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; color: var(--color-primario); font-size: 1.25rem; transition: transform var(--transition); }
.faq-item[open] summary::after { content: "−"; }
.faq-item[open] summary { border-bottom: 1px solid var(--color-borde); }
.faq-answer { padding: var(--sp-4); color: var(--color-texto); }
.faq-answer p:last-child { margin-bottom: 0; }

/* Disclaimer -------------------------------------------------------------- */
.disclaimer { font-size: 0.9rem; color: var(--color-texto-muted); }
.disclaimer-short { margin: 0 0 var(--sp-3); }
.disclaimer-full {
    margin: var(--sp-10) 0 var(--sp-6);
    padding: var(--sp-5); background: #fefce8; border: 1px solid #fde68a;
    border-radius: var(--radius-md); color: #78350f;
}
.disclaimer-full h3 { margin-top: 0; color: #92400e; font-size: 1rem; text-transform: uppercase; letter-spacing: 0.05em; }
.disclaimer-full p { margin-bottom: var(--sp-2); color: inherit; font-size: 0.92rem; }
.disclaimer-full p:last-child { margin-bottom: 0; }

/* AdSense slots ----------------------------------------------------------- */
.ad-slot {
    display: block;
    background: var(--color-fondo-muted);
    border: 1px dashed var(--color-borde);
    border-radius: var(--radius-sm);
    text-align: center;
    min-height: 90px;
    padding: var(--sp-4);
    margin: var(--sp-6) 0;
    color: var(--color-texto-claro);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    display: flex; align-items: center; justify-content: center;
}
.ad-slot-label { display: block; }
.ad-slot-inline { min-height: 120px; }
.ad-slot-block { min-height: 250px; }
.ad-slot-grid { min-height: 250px; }
.ad-slot-sidebar { min-height: 600px; }

/* Formulario -------------------------------------------------------------- */
.form-group { margin-bottom: var(--sp-5); }
.form-group label { display: block; margin-bottom: var(--sp-2); font-weight: 600; }
.form-group input, .form-group textarea, .form-group select {
    width: 100%; padding: var(--sp-3); border: 1px solid var(--color-borde);
    border-radius: var(--radius-sm); font-size: 1rem; font-family: inherit;
    background: var(--color-fondo);
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
    outline: 2px solid var(--color-primario); outline-offset: 0; border-color: var(--color-primario);
}
.form-alerta { padding: var(--sp-4); border-radius: var(--radius-sm); margin-bottom: var(--sp-5); }
.form-alerta.exito { background: #ecfdf5; color: #065f46; border: 1px solid #a7f3d0; }
.form-alerta.error { background: #fef2f2; color: #7f1d1d; border: 1px solid #fecaca; }

/* Pie --------------------------------------------------------------------- */
.site-footer {
    background: #111827; color: #d1d5db; margin-top: var(--sp-16);
    padding: var(--sp-12) 0 var(--sp-6);
}
.footer-inner {
    display: grid; grid-template-columns: 1fr; gap: var(--sp-8); padding-bottom: var(--sp-8);
    border-bottom: 1px solid #374151;
}
.footer-col h4 { color: #fff; font-size: 1rem; margin-bottom: var(--sp-3); }
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col li { margin-bottom: var(--sp-2); }
.footer-col a { color: #d1d5db; text-decoration: none; }
.footer-col a:hover { color: #fff; text-decoration: underline; }
.footer-contacto { font-size: 0.9rem; }
.email-plano { color: #fbbf24; font-weight: 500; word-break: break-all; }
.footer-bottom { padding-top: var(--sp-6); }
.footer-bottom .disclaimer { color: #9ca3af; font-size: 0.85rem; max-width: 900px; }
.copyright { color: #6b7280; font-size: 0.85rem; margin: 0; }

/* Banner de cookies -------------------------------------------------------- */
.cookie-banner {
    position: fixed; bottom: 0; left: 0; right: 0; z-index: 200;
    background: #111827; color: #fff; padding: var(--sp-4) 0;
    box-shadow: 0 -4px 20px rgba(0,0,0,0.25);
}
.cookie-banner[hidden] { display: none; }
.cookie-banner-inner { display: flex; flex-direction: column; gap: var(--sp-4); align-items: flex-start; }
.cookie-banner p { margin: 0; font-size: 0.92rem; line-height: 1.5; color: #e5e7eb; }
.cookie-banner a { color: var(--color-acento); }
.cookie-banner-actions { display: flex; gap: var(--sp-3); flex-wrap: wrap; }
.cookie-banner .btn-ghost { color: #fff; border-color: #374151; }
.cookie-banner .btn-ghost:hover { background: #1f2937; }

/* Artículo largo ----------------------------------------------------------- */
.articulo { max-width: var(--container-narrow); margin: 0 auto; }
.articulo h1 { margin-bottom: var(--sp-2); }
.articulo .lead { font-size: 1.15rem; color: var(--color-texto-muted); margin-bottom: var(--sp-6); }
.articulo .meta-info { font-size: 0.9rem; color: var(--color-texto-muted); margin-bottom: var(--sp-6); }
.articulo ul li, .articulo ol li { margin-bottom: var(--sp-2); }

/* Filtros de listado ------------------------------------------------------- */
.filtros { display: flex; gap: var(--sp-3); flex-wrap: wrap; margin: var(--sp-4) 0 var(--sp-8); }
.filtro-btn {
    padding: var(--sp-2) var(--sp-4); border: 1px solid var(--color-borde);
    background: var(--color-fondo); border-radius: var(--radius-sm);
    cursor: pointer; font-weight: 500; font-family: inherit; font-size: 0.9rem;
    color: var(--color-texto);
}
.filtro-btn.is-active { background: var(--color-primario); color: #fff; border-color: var(--color-primario); }
.filtro-btn:hover { border-color: var(--color-primario); }

/* Responsive -------------------------------------------------------------- */
@media (min-width: 640px) {
    .cards-grid { grid-template-columns: repeat(2, 1fr); }
    .cookie-banner-inner { flex-direction: row; align-items: center; }
    .cookie-banner-inner p { flex: 1; }
}

@media (min-width: 768px) {
    .footer-inner { grid-template-columns: 2fr 1fr 1fr 1fr; }
    .hero h1 { font-size: 2.75rem; }
    h1 { font-size: 2.25rem; }
    h2 { font-size: 1.75rem; }
}

@media (min-width: 1024px) {
    .cards-grid { grid-template-columns: repeat(3, 1fr); }
    .nav-toggle { display: none; }
    .nav-main { display: block; position: static; background: transparent; border: 0; box-shadow: none; }
    .nav-main ul { display: flex; gap: var(--sp-2); padding: 0; }
    .nav-main a { padding: var(--sp-2) var(--sp-3); border-radius: var(--radius-sm); }
}

@media (min-width: 1280px) {
    :root { --font-base: 17px; }
}

/* Reduce motion ------------------------------------------------------------ */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation: none; transition: none; scroll-behavior: auto; }
}