/* =========================================================================
   CITEM — Global Design System
   Único CSS global de la web pública.
   Fuente de verdad: docs/design-system.html + docs/architecture/BRAND_MANUAL.md
   ========================================================================= */

/* =========================================================================
   GLOBAL SECTION: Design Tokens
   ========================================================================= */

/* =========================================================================
   CITEM - TOKENS DE DISEÑO: "Sistema 2026" — Branding Final v2
   Paleta: Coral #da4a4a · Indigo #30276c · Negro #282828 · Crema #fcf7f0
   Tipografía: Gobold Bold (display/UI) + Helvetica Neue system stack (body)
   ========================================================================= */

/* ─── @font-face: Gobold ─────────────────────────────────────────────────── */
@font-face {
  font-family: 'Gobold';
  src: url('/assets/fonts/Gobold-Regular.woff') format('woff');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Gobold';
  src: url('/assets/fonts/Gobold-Bold.woff') format('woff');
  /* SYNC DS §3.3: Gobold se expone como 900 para evitar bold-synthesis ambiguo. */
  font-weight: 900;
  font-style: normal;
  font-display: swap;
}

:root {
  /* SYNC DS §3.2: tokens canónicos CITEM 2026 con RGB companions sin comas. */
  --c-coral: #da4a4a;
  --c-coral-dark: #b83838;
  --c-indigo: #30276c;
  --c-carbon: #282828;
  --c-paper: #fcf7f0;
  --c-white: #ffffff;

  /* SYNC DS §3.2: aliases campus/web para compatibilidad entre repos. */
  --c-crimson: var(--c-coral);
  --c-navy: var(--c-indigo);
  --c-cream: var(--c-paper);
  --c-indigo-dark: var(--c-indigo);

  --c-coral-rgb: 218 74 74;
  --c-indigo-rgb: 48 39 108;
  --c-carbon-rgb: 40 40 40;
  --c-paper-rgb: 252 247 240;
  --c-white-rgb: 255 255 255;
  --c-crimson-rgb: 218 74 74;
  --c-navy-rgb: 48 39 108;
  --c-cream-rgb: 252 247 240;

  --c-paper-muted: rgb(var(--c-paper-rgb) / 0.70);
  --c-indigo-muted: rgb(var(--c-indigo-rgb) / 0.80);

  /* SYNC DS §5.7: estados semánticos institucionales, sin verdes genéricos. */
  --c-state-success-bg: rgb(var(--c-indigo-rgb) / 0.08);
  --c-state-success-text: var(--c-indigo);
  --c-state-success-border: rgb(var(--c-indigo-rgb) / 0.40);
  --c-state-warning-bg: rgb(var(--c-coral-rgb) / 0.10);
  --c-state-warning-text: #8b3a1a;
  --c-state-warning-border: rgb(var(--c-coral-rgb) / 0.40);
  --c-state-error-bg: rgb(var(--c-coral-rgb) / 0.12);
  --c-state-error-text: #8b1a1a;
  --c-state-error-border: var(--c-coral);
  --c-state-info-bg: rgb(var(--c-indigo-rgb) / 0.06);
  --c-state-info-text: var(--c-indigo);
  --c-state-info-border: rgb(var(--c-indigo-rgb) / 0.25);
  --c-state-neutral-bg: rgb(var(--c-carbon-rgb) / 0.06);
  --c-state-neutral-text: var(--c-carbon);
  --c-state-neutral-border: rgb(var(--c-carbon-rgb) / 0.20);

  /* SYNC DS §3.3: Gobold solo display/UI; cuerpo en Helvetica Neue system stack. */
  --font-heading: 'Gobold', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --font-body: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --font: var(--font-body);

  /* Gobold es condensada — reducimos el letter-spacing negativo */
  --letter-spacing-base: 0;
  --letter-spacing-heading: -1px;
  --letter-spacing-title: -2px;
  --letter-spacing-hero: -2px;

  /* 2.1 ESCALA TIPOGRÁFICA */
  --text-base: 1.125rem;
  --text-sm: 0.875rem;
  --text-h1: clamp(2.5rem, 5vw, 5rem);
  --text-h2: clamp(2rem, 4vw, 3.5rem);
  --text-h3: clamp(1.5rem, 3vw, 2.5rem);
  --text-p: 1.25rem;
  --text-hero: clamp(3.5rem, 8vw, 7rem);

  /* SYNC DS §5.10: escala semántica base 4px + aliases legacy para CSS existente. */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-sm2: 12px;
  --space-md: 16px;
  --space-md2: 20px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;
  --space-8: 32px;
  --space-12: 48px;
  --space-16: 64px;

  --spacing-xs: var(--space-sm);
  --spacing-sm: var(--space-md);
  --spacing-md: var(--space-xl);
  --spacing-lg: var(--space-3xl);
  --spacing-xl: 5rem;

  --site-max-width: 1440px;
  --layout-max-width: 1440px;
  --navbar-height: 56px;
  --nav-height: 5rem;

  /* SYNC DS §5.10: pesos de borde canónicos y aliases legacy. */
  --border-w-structural: 3px;
  --border-w-interactive: 2px;
  --border-w-accent: 4px;
  --border-weight: var(--border-w-structural);
  --radius-sm: 0;
  --radius-md: 0;
  --radius-lg: 0;
  --radius-pill: 0;

  /* SYNC DS §5.2: sistema Blockout, blur 0 salvo focus a11y. */
  --shadow-blockout: 4px 4px 0 var(--c-indigo);
  --shadow-blockout-soft: 2px 2px 0 rgb(var(--c-indigo-rgb) / 0.20);
  --shadow-blockout-hover: 8px 8px 0 var(--c-indigo);
  --shadow-crimson: 4px 4px 0 var(--c-coral);
  --shadow-focus: 0 0 0 3px rgb(var(--c-coral-rgb) / 0.50);
  --shadow-sm: var(--shadow-blockout-soft);
  --shadow-md: var(--shadow-blockout);
  --shadow-lg: var(--shadow-blockout-hover);

  /* SYNC DS §5.10: velocidades canónicas. */
  --dur-fast: 100ms;
  --dur-medium: 200ms;
  --dur-slow: 400ms;
  --ease-out: cubic-bezier(0, 0, 0.2, 1);

  /* 5. ÍNDICES Z */
  --z-nav: 50;
  --z-modal: 100;
  --z-tooltip: 200;
}

/* =========================================================================
   GLOBAL SECTION: Base Reset And Typography
   ========================================================================= */

/* =========================================================================
   CITEM — Base & Reset: "Sistema 2026" (Standalone Theme Folder)
   Brutalismo tipográfico. Sin adornos, sin suavidades.
   ========================================================================= */

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    /* SYNC DS §3.3: cuerpo usa Helvetica Neue system stack canónico. */
    font-family: var(--font-body);
    background-color: var(--c-paper);
    /* SYNC DS §3.1: el texto base de párrafo usa Carbón; Índigo queda para titulares y UI. */
    color: var(--c-carbon);
    /* SYNC DS §8.2: cuerpo con interlineado mínimo legible. */
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

/* --- Tipografía Base --- */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 900;
    line-height: 0.95;
    letter-spacing: var(--letter-spacing-heading);
    color: var(--c-indigo);
    text-transform: uppercase;
}

p {
    font-size: var(--text-p);
    font-weight: 400;
    margin-bottom: var(--spacing-sm);
    /* SYNC DS §3.1: párrafos heredan para secciones oscuras, pero parten de Carbón en claro. */
    color: inherit;
}

strong, b {
    font-weight: 900;
    color: inherit;
}

a {
    color: inherit;
    text-decoration: none;
    /* SYNC DS §5.10: links base sin motion; componentes definen transiciones tokenizadas. */
    transition: none;
}

ul, ol {
    list-style: none;
}

img, video, svg {
    max-width: 100%;
    display: block;
}

/* --- Utilidades --- */
.text-center { text-align: center; }
.mt-4 { margin-top: var(--spacing-md); }
.hidden { display: none !important; }

/* =========================================================================
   GLOBAL SECTION: Layout And Footer
   ========================================================================= */

/* =========================================================================
   CITEM — Layout: "Sistema 2026" (Standalone Theme Folder)
   Full-width, sin max-width, bordes gruesos, footer crudo.
   ========================================================================= */

/* --- Container Core --- */
.container {
    width: 100%;
    max-width: var(--site-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* --- Divisores --- */
hr, .divider {
    border: none;
    height: var(--border-weight);
    background-color: var(--c-indigo);
    width: 100%;
    display: block;
    margin: var(--spacing-lg) 0;
}

/* --- Split Layout (Hero & Founders) --- */
.split-layout {
    display: flex;
    flex-direction: column;
    width: 100%;
}

@media (min-width: 768px) {
    .split-layout {
        flex-direction: row;
        align-items: stretch;
    }
    .split-layout > div {
        flex: 1;
        display: flex;
        flex-direction: column;
        justify-content: center;
        padding: var(--spacing-xl) var(--spacing-lg);
    }
}

/* ==========================================================================
   FOOTER — Sistema 2026
   Design principles:
   - Identidad canónica: kicker → wordmark → tagline (SSoT: docs/brand/IDENTIDAD_CITEM.md)
   - Zero magic numbers: solo design tokens
   - Links legibles: opacity mínimo 0.7, hover con color coral
   ========================================================================== */

.main-footer {
    background-color: var(--c-indigo);
    border-top: var(--border-w-accent) solid var(--c-coral);
}

/* ── Grid ── */
.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
    padding-top: var(--space-2xl);
    padding-bottom: var(--space-2xl);
}

@media (min-width: 900px) {
    .footer-grid {
        grid-template-columns: 2.2fr 1fr 1.5fr;
        padding-top: var(--space-3xl);
        padding-bottom: var(--space-3xl);
    }
}

/* ── Brand column — orden canónico: kicker → wordmark → tagline ── */
.footer-kicker {
    font-family: var(--font-heading);
    font-size: 0.6rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--c-coral);
    margin-bottom: var(--space-sm);
}

.footer-logo {
    display: block;
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 900;
    letter-spacing: var(--letter-spacing-title);
    text-transform: uppercase;
    color: var(--c-paper);
    text-decoration: none;
    line-height: 1;
    margin-bottom: var(--space-md);
}

.footer-tagline {
    color: var(--c-paper);
    font-size: 0.875rem;
    font-weight: 400;
    line-height: 1.7;
    opacity: 0.75;
    margin: 0;
}

/* ── Column headings ── */
.footer-heading {
    font-family: var(--font-heading);
    font-size: 0.65rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--c-coral);
    margin-bottom: var(--space-lg);
}

/* ── Nav link list ── */
.footer-nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-nav ul li a {
    display: block;
    font-family: var(--font-heading);
    font-size: 0.8rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--c-paper);
    opacity: 0.7;
    margin-bottom: var(--space-md);
    text-decoration: none;
    transition: color var(--dur-fast) var(--ease-out),
                opacity var(--dur-fast) var(--ease-out);
}

.footer-nav ul li a:hover {
    color: var(--c-coral);
    opacity: 1;
}

/* ── CTA column ── */
.footer-cta-text {
    color: var(--c-paper);
    font-size: 0.875rem;
    font-weight: 400;
    line-height: 1.6;
    opacity: 0.75;
    margin-bottom: var(--space-lg);
}

.footer-cta-btn {
    display: inline-block;
    background-color: var(--c-coral);
    color: var(--c-indigo);
    font-family: var(--font-heading);
    font-size: 0.8rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 0.75rem 1.5rem;
    text-decoration: none;
    border: var(--border-w-structural) solid var(--c-indigo);
    box-shadow: var(--shadow-blockout);
    transition: transform var(--dur-fast) var(--ease-out),
                box-shadow var(--dur-fast) var(--ease-out),
                background-color var(--dur-fast) var(--ease-out);
}

.footer-cta-btn:hover {
    background-color: var(--c-paper);
    color: var(--c-indigo);
    transform: translate(-2px, -2px);
    box-shadow: var(--shadow-blockout-hover);
}

/* ── Footer bottom ── */
.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-lg);
    padding-bottom: var(--space-lg);
    border-top: 1px solid rgb(var(--c-paper-rgb) / 0.15);
}

.footer-copyright {
    color: rgb(var(--c-paper-rgb) / 0.45);
    font-size: 0.75rem;
    font-weight: 400;
    margin: 0;
}

.footer-legal {
    display: flex;
    gap: var(--space-xl);
}

.footer-legal a {
    font-family: var(--font-heading);
    font-size: 0.65rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: rgb(var(--c-paper-rgb) / 0.4);
    text-decoration: none;
    transition: color var(--dur-fast) var(--ease-out);
}

.footer-legal a:hover {
    color: var(--c-paper);
}

/* ── Mobile ── */
@media (max-width: 768px) {
    .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-md);
    }

    .footer-legal {
        flex-wrap: wrap;
        gap: var(--space-md);
    }

    /* Centrar todo el footer en mobile */
    .main-footer {
        text-align: center;
    }

    .footer-nav ul li a {
        text-align: center;
    }

    .footer-legal {
        justify-content: center;
    }
}

/* ── Accesibilidad ── */
@media (prefers-reduced-motion: reduce) {
    .footer-nav ul li a,
    .footer-cta-btn,
    .footer-legal a {
        transition: none !important;
        transform: none !important;
    }
}

/* =========================================================================
   GLOBAL SECTION: Navigation
   ========================================================================= */

/* =========================================================================
   CITEM — Navegación: "Sistema 2026" (Standalone Theme Folder)
   Header indigo con coral bottom, tipografía 900, sin micro-animaciones.
   ========================================================================= */

.main-header {
    width: 100%;
    height: var(--nav-height);
    background-color: var(--c-indigo);
    color: var(--c-paper);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: var(--border-w-accent) solid var(--c-coral);
    display: flex;
    align-items: center;
    transition: box-shadow var(--dur-medium) var(--ease-out);
}

/* Sombra coral visible al hacer scroll — refuerza la separación con el contenido */
.main-header.is-scrolled {
    box-shadow: 0 var(--border-w-accent) 0 var(--c-coral);
}

.main-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    padding: 0 var(--space-lg);
    max-width: 100%;
}

/* --- Logo --- */
.logo a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--font-heading);
    font-weight: 900;
    font-size: 2rem;
    letter-spacing: -1px;
    color: var(--c-paper);
    text-decoration: none;
}

.logo img {
    height: 40px;
    width: auto;
    filter: brightness(0) invert(1) sepia(0) saturate(0) hue-rotate(0deg);
}

.logo span {
    color: var(--c-paper);
}

/* --- Nav Desktop --- */
.main-nav ul {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

/* ── Enlaces de navegación genéricos — excluye el CTA ── */
.main-nav a:not(.nav-cta) {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 1px;
    white-space: nowrap;
    color: var(--c-paper);
    text-decoration: none;
    transition: color var(--dur-fast) var(--ease-out);
}

.main-nav a:not(.nav-cta):hover,
.main-nav a:not(.nav-cta).active {
    color: var(--c-coral);
}

/* ── CTA — componente independiente, no hereda reglas de nav-link.
   El nav es indigo: borde/sombra deben ser --c-paper (visible).
   --shadow-blockout usa --c-indigo → invisible sobre fondo indigo.
   Hover: ghost button (transparent + paper) — patrón correcto en superficie oscura. ── */
.main-nav .nav-cta {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 1px;
    background-color: var(--c-coral);
    color: var(--c-indigo);
    border: var(--border-w-structural) solid var(--c-paper);
    padding: 0.6rem 1.5rem;
    text-decoration: none;
    display: inline-block;
    box-shadow: 4px 4px 0 var(--c-paper);
    transition: background-color var(--dur-fast) var(--ease-out),
                color var(--dur-fast) var(--ease-out),
                border-color var(--dur-fast) var(--ease-out),
                transform var(--dur-fast) var(--ease-out),
                box-shadow var(--dur-fast) var(--ease-out);
}

.main-nav .nav-cta:hover,
.main-nav .nav-cta:focus-visible {
    background-color: transparent;
    color: var(--c-paper);
    border-color: var(--c-paper);
    transform: translate(-2px, -2px);
    box-shadow: 6px 6px 0 var(--c-paper);
}

/* --- Hamburger Mobile ---
   SVG CSS puro: 3 líneas horizontales brutalistas. Sin Unicode ambiguo. */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 2.5rem;
    height: 2.5rem;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 4px;
    flex-shrink: 0;
}

.mobile-menu-btn span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--c-paper);
    transition: transform var(--dur-fast) var(--ease-out),
                opacity var(--dur-fast) var(--ease-out);
}

/* Animación X cuando el menú está abierto */
.mobile-menu-btn[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.mobile-menu-btn[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
}
.mobile-menu-btn[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

.mobile-menu-btn:focus-visible {
    outline: var(--border-w-interactive) solid var(--c-paper);
    outline-offset: 4px;
    border-radius: 0;
}

/* --- Tablet / small desktop: compact nav --- */
@media (max-width: 1200px) and (min-width: 769px) {
    .logo img {
        height: 36px;
    }

    .main-nav ul {
        gap: 1rem;
    }

    .main-nav a:not(.nav-cta) {
        font-size: 0.9rem;
    }

    .main-nav .nav-cta {
        padding: 0.5rem 1rem;
        font-size: 0.85rem;
        white-space: nowrap;
    }
}

/* --- Mobile nav --- */
@media (max-width: 768px) {
    .mobile-menu-btn {
        display: flex;
    }

    .main-nav {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        width: 100%;
        height: auto;
        max-height: calc(100vh - var(--nav-height));
        overflow-y: auto;
        background-color: var(--c-indigo);
        padding: 0;
        transform: translateY(-110%);
        opacity: 0;
        /* SYNC DS §5.10: mobile nav usa motion lenta tokenizada. */
        transition: transform var(--dur-slow) var(--ease-out), opacity var(--dur-slow) var(--ease-out);
        z-index: 999;
        pointer-events: none;
        /* SYNC DS §5.10: borde accent tokenizado. */
        border-bottom: var(--border-w-accent) solid var(--c-coral);
    }

    .main-nav.is-open {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }

    .main-nav ul {
        display: flex;
        flex-direction: column;
        align-items: stretch;
        justify-content: flex-start;
        width: 100%;
        height: auto;
        gap: 0;
    }

    .main-nav ul li {
        width: 100%;
    }

    /* Enlace genérico en mobile */
    .main-nav a:not(.nav-cta) {
        display: block;
        color: var(--c-paper);
        font-size: 1.5rem;
        width: 100%;
        padding: 1rem 1.5rem;
        /* SYNC DS §5.10: item móvil con borde estructural tokenizado. */
        border-bottom: var(--border-w-structural) solid rgb(var(--c-paper-rgb) / 0.2);
    }

    .main-nav a:not(.nav-cta):hover,
    .main-nav a:not(.nav-cta).active {
        background-color: var(--c-paper);
        color: var(--c-indigo);
    }

    /* CTA en mobile: coral sólido, ancho completo */
    .main-nav .nav-cta {
        display: block;
        width: 100%;
        padding: 1.25rem 1.5rem;
        text-align: center;
        background-color: var(--c-coral);
        color: var(--c-indigo);
        border: none;
        border-top: var(--border-w-structural) solid rgb(var(--c-indigo-rgb) / 0.15);
        box-shadow: none;
    }

    .main-nav .nav-cta:hover {
        background-color: var(--c-paper);
        color: var(--c-indigo);
        transform: none;
        box-shadow: none;
    }
}

/* --- Accesibilidad: sin motion --- */
@media (prefers-reduced-motion: reduce) {
    .main-header,
    .main-nav,
    .main-nav .nav-cta,
    .main-nav a:not(.nav-cta) {
        transition: none !important;
        transform: none !important;
    }
}

/* =========================================================================
   GLOBAL SECTION: Components
   ========================================================================= */

/* =========================================================================
   CITEM — Components: "Sistema 2026" (Standalone Theme Folder)
   Botones secos, inputs rígidos, sin radius, sin sombras.
   ========================================================================= */

/* CSS BUTTONS - Sistema 2026 (Brutalista puro) */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1.5rem 3rem;
    /* SYNC DS §3.3: botones son UI, usan Gobold Bold. */
    font-family: var(--font-heading);
    font-weight: 900;
    font-size: 1rem;
    text-transform: uppercase;
    text-decoration: none;
    letter-spacing: 1px;
    border-radius: 0;
    /* SYNC DS §5.10: botón base usa borde interactivo, no alias estructural. */
    border: var(--border-w-interactive) solid var(--c-indigo);
    cursor: pointer;
    background-color: var(--c-paper);
    color: var(--c-indigo);
    transition: none; /* Sistema 2026: cambios instantáneos */
}

.btn-primary {
    /* SYNC DS §5.1: botones primarios usan Coral CITEM dentro de paleta canónica. */
    background-color: var(--c-coral);
    color: var(--c-paper);
    border-color: var(--c-indigo);
}

.btn-secondary {
    background-color: var(--c-coral);
    /* SYNC DS §5.10: borde interactivo tokenizado. */
    border: var(--border-w-interactive) solid var(--c-coral);
    /* SYNC DS §3.1: texto sobre coral usa Papel; Índigo en botón pequeño no alcanza contraste normal. */
    color: var(--c-paper);
}

/* Hovers secos, sin transiciones ni sombras */
.btn:hover {
    background-color: var(--c-indigo);
    color: var(--c-paper);
    transform: none;
    box-shadow: none;
}

.btn-primary:hover {
    /* SYNC DS §5.1: hover usa coral-dark canónico sin introducir colores ajenos. */
    background-color: var(--c-coral-dark);
    color: var(--c-paper);
    border-color: var(--c-coral-dark);
}

.btn-secondary:hover {
    background-color: var(--c-paper);
    color: var(--c-coral);
    border-color: var(--c-coral);
    transform: none;
}

/* Accesibilidad Keyboard Navigation */
.btn:focus-visible {
    /* SYNC DS §5.2: foco usa shadow-focus coral/50, único blur permitido. */
    outline: none;
    box-shadow: var(--shadow-focus);
    outline-offset: 4px;
}

/* --- Forms & Inputs (Brutalista) --- */
.form-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    font-size: var(--text-sm);
    font-weight: 900;
    text-transform: uppercase;
    /* SYNC DS §3.3: labels son UI con color institucional. */
    color: var(--c-indigo);
    margin-bottom: 0.5rem;
    letter-spacing: 1px;
}

input[type="text"],
input[type="email"],
textarea {
    width: 100%;
    padding: 1.25rem;
    /* SYNC DS §3.3: controles de texto usan stack de cuerpo canónico. */
    font-family: var(--font-body);
    font-size: 1.125rem;
    font-weight: bold;
    /* SYNC DS §3.1: texto de input en Carbón y superficie Papel, no blanco puro. */
    color: var(--c-carbon);
    background-color: var(--c-paper);
    border: var(--border-w-interactive) solid var(--c-indigo);
    border-radius: 0;
    outline: none;
    transition: none;
}

input:focus,
textarea:focus {
    background-color: var(--c-paper);
    border-color: var(--c-coral);
    /* SYNC DS §5.2: foco accesible usa shadow-focus. */
    box-shadow: var(--shadow-focus);
}

input::placeholder,
textarea::placeholder {
    /* SYNC DS §8.2: placeholder mínimo al 50% sobre superficie clara. */
    color: rgb(var(--c-carbon-rgb) / 0.50);
    opacity: 1;
    font-weight: 400;
}

/* --- Badges / Labels --- */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 900;
    text-transform: uppercase;
    background-color: var(--c-coral);
    color: var(--c-paper);
    letter-spacing: 1px;
    border-radius: 0;
}

.microcopy {
    display: block;
    font-size: var(--text-sm);
    font-weight: 400;
    color: var(--c-indigo);
    margin-top: 0.75rem;
    opacity: 0.6;
}

/* =========================================================================
   GLOBAL SECTION: Shared Page Patterns
   ========================================================================= */

/* SYNC DS §3.3: page heroes share one global implementation; pages only own copy/structure. */
:is(.formaciones-header, .tools-header, .ia-hero) {
    background-color: var(--c-indigo);
    color: var(--c-paper);
    min-height: 50vh;
    display: flex;
    align-items: flex-end;
    padding: var(--spacing-xl) 0 var(--spacing-lg);
    border-bottom: var(--border-w-accent) solid var(--c-coral);
}

.ia-hero {
    min-height: 60vh;
}

:is(.formaciones-kicker, .tools-kicker, .ia-kicker) {
    font-size: 1rem;
    font-weight: 900;
    color: var(--c-paper);
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: var(--spacing-sm);
    opacity: 0.6;
}

:is(.formaciones-header, .tools-header, .ia-hero) h1 {
    font-size: var(--text-hero);
    font-weight: 900;
    color: var(--c-paper);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-hero);
    line-height: 0.85;
}

:is(.formaciones-header .subtitle, .tools-header .subtitle, .ia-hero-subtitle) {
    font-size: clamp(1.25rem, 2.5vw, 1.75rem);
    color: var(--c-coral);
    max-width: 700px;
    line-height: 1.2;
}

.ia-hero-subtitle {
    color: var(--c-paper);
    opacity: 0.85;
    line-height: 1.5;
    margin-bottom: var(--spacing-lg);
}

.ia-hero-cta {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-xs);
}

.ia-hero-btn,
.cta-submit-btn,
.ia-callout-btn {
    background-color: var(--c-coral);
    color: var(--c-paper);
    border: var(--border-w-structural) solid var(--c-indigo);
    box-shadow: var(--shadow-blockout);
    transition: transform var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out), background-color var(--dur-fast) var(--ease-out);
}

:is(.ia-hero-btn, .cta-submit-btn, .ia-callout-btn):hover {
    transform: translate(-1px, -1px);
    box-shadow: var(--shadow-blockout-hover);
    background-color: var(--c-coral-dark);
}

/* SYNC DS §5.3: CTA forms are global; page CSS must not reimplement form layout. */
.cta-form {
    max-width: 600px;
    margin: var(--spacing-md) auto var(--spacing-md);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

@media (min-width: 768px) {
    .form-row {
        grid-template-columns: 1fr 1fr;
    }
}

.cta-form .form-group {
    margin-bottom: 0;
}

.cta-form input {
    background-color: rgb(var(--c-paper-rgb) / 0.20);
    border-color: rgb(var(--c-paper-rgb) / 0.50);
    color: var(--c-paper);
    font-weight: 900;
}

.cta-form input::placeholder {
    color: var(--c-paper);
    opacity: 0.6;
    font-weight: 400;
}

.cta-form input:focus {
    background-color: rgb(var(--c-paper-rgb) / 0.30);
    border-color: var(--c-coral);
    box-shadow: var(--shadow-focus);
}

.cta-submit-btn {
    width: 100%;
    margin-top: var(--spacing-sm);
    padding: 1.25rem 3rem;
    font-size: 1.25rem;
    font-weight: 900;
    text-transform: uppercase;
    cursor: pointer;
}

@media (max-width: 768px) {
    :is(.formaciones-header, .tools-header) {
        min-height: 40vh;
        padding: var(--spacing-lg) 0 var(--spacing-md);
    }

    .ia-hero {
        min-height: 50vh;
        padding: var(--spacing-lg) 0 var(--spacing-md);
    }

    :is(.formaciones-kicker, .tools-kicker, .ia-kicker) {
        letter-spacing: 0.5px;
        font-size: 0.75rem;
    }

    .cta-submit-btn {
        font-size: 1.25rem;
        padding: 1.5rem 2rem;
        box-shadow: var(--shadow-blockout);
    }
}

@media (prefers-reduced-motion: reduce) {
    .cta-form input,
    .cta-submit-btn,
    .ia-hero-btn,
    .ia-callout-btn {
        transition: none !important;
        transform: none !important;
    }
}

/* SYNC DS §3.3: public placeholder pages use global classes, no inline style drift. */
.page-stub {
    min-height: 60vh;
    display: flex;
    align-items: center;
}

.page-stub-title {
    font-size: clamp(3rem, 6vw, 6rem);
    font-weight: 900;
    text-transform: uppercase;
    color: var(--c-paper);
    line-height: 0.9;
    margin-bottom: var(--spacing-sm);
}

.page-stub-text {
    font-size: 1.5rem;
    max-width: 600px;
}

.page-stub-link {
    color: var(--c-coral);
    font-weight: 900;
}

/* --- Theme Switcher Dropdown (Floating Component) --- */
.floating-theme-switcher {
    position: fixed;
    bottom: var(--spacing-md);
    right: var(--spacing-md);
    z-index: 9999;
    background-color: var(--c-paper);
    padding: 0.25rem;
    border-radius: 0;
    box-shadow: none;
    /* SYNC DS §5.10: controles flotantes con borde estructural. */
    border: var(--border-w-structural) solid var(--c-indigo);
    transition: none;
}

.floating-theme-switcher:hover {
    transform: none;
    box-shadow: none;
}

.theme-select {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-color: transparent;
    border: none;
    padding: 0.5rem 2rem 0.5rem 1rem;
    font-size: 0.8rem;
    font-weight: 900;
    color: var(--c-indigo);
    /* SYNC DS §3.3: selector de tema es UI, usa Gobold. */
    font-family: var(--font-heading);
    text-transform: uppercase;
    cursor: pointer;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2330276c' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 0.5rem center;
    background-size: 1em;
}

.theme-select:focus {
    outline: none;
}

.theme-select:focus-visible {
    /* SYNC DS §5.2: foco accesible consistente. */
    outline: var(--border-w-interactive) solid var(--c-coral);
    outline-offset: -2px;
    border-radius: 0;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* =========================================================================
   GLOBAL SECTION: Icon Glyphs
   ========================================================================= */

/* =========================================================================
   CITEM — SVG Icon System (Phosphor Bold, self-hosted sprite)
   
   Gold standard: <symbol>/<use> pattern with external sprite file.
   - Renders instantly (no font loading delay / FOUC)
   - 7.8KB total for 15 icons (vs ~40KB webfont)
   - fill="currentColor" inherits text color from parent
   - Accessible: aria-hidden="true" on decorative icons
   - Zero external dependencies (no CDN)
   
   Usage:
     <svg class="icon" aria-hidden="true">
       <use href="/assets/icons/sprite.svg#brain"></use>
     </svg>
   ========================================================================= */

.icon {
    width: 1em;
    height: 1em;
    fill: currentColor;
    display: inline-block;
    vertical-align: -0.125em;   /* optical alignment with text */
    flex-shrink: 0;
}

/* =========================================================================
   GLOBAL SECTION: Hero Patterns
   ========================================================================= */

/* =========================================================================
   CITEM — Hero Section: "Sistema 2026"
   
   Architecture:
   - .hero-viewport wraps hero + flags marquee
   - Height = 100svh - nav (fills remaining viewport after sticky nav)
   - Flex column: hero fills remaining space, marquee sits at bottom
   - Zero magic numbers — everything references design tokens
   ========================================================================= */

/* ─── Viewport wrapper (hero + marquee = fills below nav) ─── */
.hero-viewport {
    height: calc(100svh - var(--nav-height));
    display: flex;
    flex-direction: column;
}

/* ─── Hero Section (takes all remaining space) ─── */
.hero-section {
    flex: 1;
    display: flex;
    flex-direction: column;
    width: 100%;
    padding: 0; /* Override global section padding */
    border-bottom: var(--border-weight) solid var(--c-indigo);
    min-height: 0; /* Prevent flex overflow */
}

@media (min-width: 768px) {
    .hero-section {
        flex-direction: row;
    }
}

/* ─── Hero Main (Left — Brand) ─── */
.hero-main {
    flex: 1;
    background-color: var(--c-paper);
    padding: var(--spacing-lg) 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

@media (min-width: 768px) {
    .hero-main {
        border-right: var(--border-weight) solid var(--c-indigo);
    }
}

.hero-kicker {
    font-size: 0.875rem;
    font-weight: 900;
    color: var(--c-indigo);
    text-transform: uppercase;
    margin-bottom: var(--spacing-sm);
    letter-spacing: 2px;
}

.hero-title {
    font-size: var(--text-hero);
    color: var(--c-indigo);
    line-height: 0.85;
    letter-spacing: var(--letter-spacing-title);
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    font-weight: 900;
}

.hero-card-text {
    font-size: 1.25rem;
    /* SYNC DS §8.1: coral solo en texto display/large; esta pieza es uppercase bold. */
    color: var(--c-coral);
    font-weight: 900;
    line-height: 1.3;
    max-width: 500px;
    text-transform: uppercase;
}

/* ─── Hero Aside (Right — CTA) ─── */
.hero-aside {
    flex: 1;
    background-color: var(--c-coral);
    color: var(--c-paper);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    padding: var(--spacing-lg) 0;
    overflow: hidden;
}

@media (min-width: 768px) {
    .hero-aside {
        /* SYNC DS §5.2: separación lateral sin blur ni negro genérico. */
        box-shadow: inset var(--border-w-accent) 0 0 rgb(var(--c-indigo-rgb) / 0.18);
    }
}

.hero-aside .cta-wrapper {
    z-index: 2;
}

.hero-aside .btn-primary {
    /* SYNC DS §5.1: CTA principal del hero usa Coral CITEM dentro de paleta canónica. */
    background-color: var(--c-coral);
    color: var(--c-paper);
    /* SYNC DS §5.10: CTA hero usa borde estructural. */
    border: var(--border-w-structural) solid var(--c-indigo);
    padding: 1rem 3rem;
    font-size: 1.125rem;
    font-weight: 900;
    text-transform: uppercase;
    border-radius: 0;
    /* SYNC DS §5.2: sombra blockout canónica. */
    box-shadow: var(--shadow-blockout);
    transition: transform var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out);
}

.hero-aside .btn-primary:hover {
    /* SYNC DS §5.2: hover lift brutalista. */
    transform: translate(-1px, -1px);
    box-shadow: var(--shadow-blockout-hover);
    background-color: var(--c-coral-dark);
}

.hero-aside .microcopy {
    margin-top: 1rem;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--c-paper);
    opacity: 0.7;
}

/* ─── Marquee (natural height, sits at bottom of viewport) ─── */
.marquee-container {
    width: 100%;
    background-color: var(--c-indigo);
    color: var(--c-paper);
    padding: 1rem 0;
    font-size: 1rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 2px;
    overflow: hidden;
    white-space: nowrap;
    display: flex;
    flex-shrink: 0; /* Never shrink — always show at full height */
    border-bottom: var(--border-weight) solid var(--c-indigo);
}

.marquee-track {
    display: inline-block;
    white-space: nowrap;
    animation: ticker 40s linear infinite;
    will-change: transform;
    padding-right: 50px;
}

.marquee-track:hover {
    animation-play-state: paused;
}

.marquee-track span {
    color: var(--c-paper);
}

.marquee-track span:nth-child(even) {
    color: var(--c-coral);
}

/* SYNC DS §8.3: hero declara guard local para animaciones/transiciones. */
@media (prefers-reduced-motion: reduce) {
    .hero-aside .btn-primary {
        transition: none !important;
        transform: none !important;
    }

    .marquee-track {
        animation: none !important;
    }
}

/* =========================================================================
   GLOBAL SECTION: Reusable Sections
   ========================================================================= */

/* =========================================================================
   CITEM — Content Sections: "Sistema 2026" (Standalone Theme Folder)
   Tipografía gigante, sin pseudo-elementos decorativos, bordes gruesos.
   ========================================================================= */

/* --- Títulos Generales de Sección --- */
section {
    padding: var(--spacing-xl) 0;
}

section h2 {
    font-size: var(--text-h2);
    color: inherit;
    line-height: 1.0;
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    font-weight: 900;
    letter-spacing: var(--letter-spacing-heading);
}

/* Sistema 2026: sin raya decorativa */
section h2::after {
    display: none;
    content: none;
}

section p.intro {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
    max-width: 800px;
    color: var(--c-carbon);
    opacity: 0.8;
}

/* --- Problema (Problem Section) --- */
.problem-section {
    background-color: var(--c-paper);
}
.problem-section h2 {
    color: var(--c-coral);
}
.problem-section p {
    font-size: 1.125rem;
    line-height: 1.6;
    max-width: 800px;
    color: var(--c-carbon);
}
.problem-section p strong {
    /* SYNC DS §8.1: coral queda en énfasis display/large, no párrafo normal. */
    color: var(--c-coral);
    display: block;
    margin-top: var(--spacing-md);
    font-size: 1.35rem;
}

/* --- Qué Somos (About Section) --- */
.about-section {
    background-color: var(--c-indigo);
    color: var(--c-paper);
}
.about-section h2 {
    color: var(--c-paper);  /* Big Gobold heading on dark = cream, max impact */
}
.about-section p {
    font-size: 1.25rem;
    color: var(--c-paper);
    max-width: 800px;
    opacity: 0.9;
}

/* --- Pilares (Pillars) --- */
.pillars-section {
    background: var(--c-paper);
}
.pillars-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

@media (min-width: 768px) {
    .pillars-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-md);
    }
}

.pillar {
    display: flex;
    flex-direction: column;
    padding: var(--spacing-md);
    /* SYNC DS §5.9: cards en Papel, no blanco puro. */
    border: var(--border-w-structural) solid var(--c-indigo);
    background-color: var(--c-paper);
    transition: transform var(--dur-medium) var(--ease-out), box-shadow var(--dur-medium) var(--ease-out);
}

@media (min-width: 768px) {
    .pillar {
        padding: var(--spacing-lg) var(--spacing-md);
        min-height: 500px;
    }
}

.pillar:hover {
    transform: translate(-1px, -1px);
    /* SYNC DS §5.2: hover usa blockout canónico. */
    box-shadow: var(--shadow-blockout);
}

.pillar--accent {
    background: var(--c-indigo);
    color: var(--c-paper);
}

.pillar-num {
    font-size: clamp(3rem, 5vw, 4.5rem);
    font-weight: 900;
    line-height: 0.8;
    color: var(--c-coral);
    margin-bottom: var(--spacing-sm);
    border: none;
}

.pillar--accent .pillar-num {
    color: var(--c-coral);  /* Accent number on dark pillar = coral */
}

.pillar-title {
    font-size: 1.25rem;
    font-weight: 900;
    text-transform: uppercase;
    margin-bottom: var(--spacing-sm);
    color: var(--c-indigo);
    letter-spacing: 1px;
}

.pillar--accent .pillar-title {
    color: var(--c-paper);
}

.pillar-text {
    font-size: 1.125rem;
    line-height: 1.5;
    color: var(--c-carbon);  /* body text on cream = black */
    opacity: 0.9;
}

.pillar--accent .pillar-text {
    color: var(--c-paper);
    opacity: 1;
}

/* --- Rutas (Routes Section) --- */
.routes-section {
    /* SYNC DS §3.1: secciones claras usan Papel, no blanco puro. */
    background-color: var(--c-paper);
}

.routes-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

@media (min-width: 768px) {
    .routes-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-md);
    }
}

.route-card {
    padding: var(--spacing-lg);
    background-color: var(--c-paper);
    border: var(--border-w-structural) solid var(--c-indigo);
    border-radius: 0;
    transition: transform var(--dur-medium) var(--ease-out), box-shadow var(--dur-medium) var(--ease-out);
}

.route-card:hover {
    transform: translate(-1px, -1px);
    /* SYNC DS §5.2: hover destacado usa sombra coral canónica. */
    box-shadow: var(--shadow-crimson);
}

.route-card h3 {
    font-size: var(--text-h3);
    font-weight: 900;
    text-transform: uppercase;
    margin-bottom: var(--spacing-xs);
    color: var(--c-indigo);
    line-height: 0.9;
}

.route-card .descriptor {
    font-weight: 900;
    color: var(--c-coral);
    text-transform: uppercase;
    font-size: var(--text-sm);
    margin-bottom: var(--spacing-md);
    letter-spacing: 1px;
}

.route-card p {
    font-size: 1.125rem;
    line-height: 1.5;
    color: var(--c-carbon);
}

/* --- Founders (Founders Section) --- */
/* ─── Founders Section ─────────────────────────────────────── */
.founders-section {
    background-color: var(--c-indigo);
    color: var(--c-paper);
}

/* Header: title + one-liner intro */
.founders-header {
    border-bottom: var(--border-w-structural) solid var(--c-paper);
    padding-bottom: var(--spacing-lg);
    margin-bottom: 0;
}
.founders-section h2 {
    color: var(--c-paper);
    margin-bottom: var(--spacing-sm);
}
.founders-header p {
    color: var(--c-paper);
    opacity: 0.7;
    font-size: 1.125rem;
    max-width: 640px;
    margin: 0;
}

/* Grid: stack of editorial rows */
.founders-grid {
    display: flex;
    flex-direction: column;
}

/* Each founder: full-width horizontal strip */
.founder-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    padding: var(--spacing-lg) 0;
    border-bottom: 1px solid rgba(252, 247, 240, 0.15);
}
@media (min-width: 768px) {
    .founder-row {
        grid-template-columns: 2fr 3fr;
        gap: var(--spacing-xl);
        align-items: center;
    }
}

/* Identity column: name + role */
.founder-row__name {
    font-size: clamp(2rem, 4vw, 3.5rem);
    font-weight: 900;
    font-family: 'Gobold', sans-serif;
    text-transform: uppercase;
    color: var(--c-paper);
    line-height: 1;
    margin: 0 0 0.5rem 0;
    letter-spacing: -0.01em;
}
.founder-row__role {
    display: block;
    color: var(--c-coral);
    text-transform: uppercase;
    font-weight: 900;
    font-size: 0.75rem;
    letter-spacing: 3px;
}

/* Body column: bio prose */
.founder-row__bio {
    color: var(--c-paper);
    opacity: 0.72;
    font-size: 0.9375rem;
    line-height: 1.75;
    margin: 0;
    font-weight: 400;
}


/* --- CTA Final Section --- */
.cta-final-section {
    background-color: var(--c-coral);
    /* SYNC DS §3.1: texto sobre coral usa Papel. */
    color: var(--c-paper);
    text-align: center;
}
.cta-final-section h2 {
    color: var(--c-paper);
    padding-bottom: 0;
}
.cta-final-section .container p {
    margin: 0 auto var(--spacing-md);
    max-width: 800px;
    color: var(--c-paper);
    font-size: 1.125rem;
    font-weight: 900;
    line-height: 1.3;
    text-transform: uppercase;
}
.cta-final-section .btn {
    /* SYNC DS §5.1: CTA final público usa Coral CITEM dentro de paleta canónica. */
    background-color: var(--c-coral);
    color: var(--c-paper);
    border: var(--border-w-structural) solid var(--c-indigo);
    padding: 1.25rem 3rem;
    font-size: 1.35rem;
    font-weight: 900;
    text-transform: uppercase;
    border-radius: 0;
    box-shadow: var(--shadow-blockout);
    transition: transform var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out);
}
.cta-final-section .btn:hover {
    transform: translate(-1px, -1px);
    box-shadow: var(--shadow-blockout-hover);
    background-color: var(--c-coral-dark);
    /* SYNC DS §5.1: hover coral-dark conserva texto Índigo para contraste en CTA display. */
    color: var(--c-paper);
}
.cta-final-section .container p.microcopy {
    color: var(--c-paper);
    opacity: 0.9;
    margin-top: var(--spacing-md);
    margin-bottom: 0;
    font-weight: 900;
    font-size: 0.875rem;
    text-transform: uppercase;
}

/* --- Ecosystem Section (Landing — 3 Marketplaces Preview) --- */
.ecosystem-section {
    /* SYNC DS §3.1: secciones claras usan Papel. */
    background-color: var(--c-paper);
    border-top: var(--border-weight) solid var(--c-indigo);
}

.ecosystem-section h2 {
    color: var(--c-indigo);  /* Standard heading on light bg */
}

.ecosystem-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

@media (min-width: 768px) {
    .ecosystem-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.ecosystem-card {
    padding: var(--spacing-md);
    border: var(--border-w-structural) solid var(--c-indigo);
    background-color: var(--c-paper);
    transition: transform var(--dur-medium) var(--ease-out), box-shadow var(--dur-medium) var(--ease-out);
}

.ecosystem-card:hover {
    transform: translate(-1px, -1px);
    /* SYNC DS §5.2: hover destacado usa sombra coral canónica. */
    box-shadow: var(--shadow-crimson);
}

.ecosystem-card--accent {
    background-color: var(--c-indigo);
    color: var(--c-paper);
}

.ecosystem-card-icon {
    font-size: 2.2rem;
    margin-bottom: var(--spacing-sm);
    line-height: 1;
}

.ecosystem-card h3 {
    font-size: 1.75rem;
    font-weight: 900;
    text-transform: uppercase;
    margin-bottom: var(--spacing-sm);
    color: var(--c-indigo);
    letter-spacing: 1px;
}

.ecosystem-card--accent h3 {
    color: var(--c-paper);  /* Card heading on dark = cream, coral only for links */
}

.ecosystem-list {
    list-style: none;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.ecosystem-list li {
    font-size: 1rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--c-indigo);
    opacity: 0.7;
}

.ecosystem-card--accent .ecosystem-list li {
    color: var(--c-paper);
    opacity: 0.8;
}

.ecosystem-card a.ecosystem-link {
    display: inline-block;
    margin-top: var(--spacing-sm);
    font-size: var(--text-sm);
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--c-coral);
}

.ecosystem-card--accent a.ecosystem-link {
    color: var(--c-coral);
}

/* --- IA Callout (from /herramientas/ → /ia/) --- */
.ia-callout {
    background-color: var(--c-indigo);
    color: var(--c-paper);
    /* A3 fix: horizontal padding removed — .container lo gestiona */
    padding: var(--spacing-xl) 0;
    /* SYNC DS §5.10: bordes accent tokenizados. */
    border-top: var(--border-w-accent) solid var(--c-coral);
    border-bottom: var(--border-w-accent) solid var(--c-coral);
}

.ia-callout h2 {
    color: var(--c-paper);  /* Big heading on dark = cream */
}

.ia-callout .section-intro {
    font-size: 1.25rem;
    color: var(--c-paper);
    opacity: 0.9;
    max-width: 700px;
    margin-bottom: var(--spacing-md);
}

/* SYNC DS §8.3: secciones con hover/transición declaran guard local. */
@media (prefers-reduced-motion: reduce) {
    .pillar,
    .route-card,
    .founder,
    .cta-final-section .btn,
    .ecosystem-card {
        transition: none !important;
        transform: none !important;
    }
}

/* =========================================================================
   GLOBAL SECTION: Animations
   ========================================================================= */

/* =========================================================================
   CITEM — Animations: "Sistema 2026" (Standalone Theme Folder)
   Mínimas. Solo lo esencial para el ticker + observer.
   ========================================================================= */

/* Keyframes */
@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* Base Classes animadas por el observer en JS */
.animate {
    opacity: 0;
}

.animate.is-visible {
    /* SYNC DS §5.10: animación de entrada usa duración lenta tokenizada. */
    animation: fadeUp var(--dur-slow) var(--ease-out) forwards;
}

/* Staggering delays */
.animate-delay-1 { animation-delay: 0.05s; }
.animate-delay-2 { animation-delay: 0.1s; }
.animate-delay-3 { animation-delay: 0.15s; }
.animate-delay-4 { animation-delay: 0.2s; }

/* Control para usuarios que prefieren no motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    .animate {
        opacity: 1;
        transform: none !important;
    }
}

/* Ticker / Marquesina infinita */
@keyframes ticker {
    0% {
        transform: translate3d(0, 0, 0);
    }
    100% {
        transform: translate3d(-100%, 0, 0);
    }
}

/* Ticker inverso: empieza con contenido ya visible */
@keyframes ticker-reverse {
    0% {
        transform: translate3d(-50%, 0, 0);
    }
    100% {
        transform: translate3d(0, 0, 0);
    }
}

/* =========================================================================
   GLOBAL SECTION: Responsive Rules
   ========================================================================= */

/* =========================================================================
   CITEM — Responsive: "Sistema 2026" (Standalone Theme Folder)
   
   Audit fixes applied:
   - C2: Hero flex split → auto-height on mobile
   - A2: --spacing-xl reduced (was 6rem > desktop's 5rem, now 3rem)
   - C4: Button padding reduced for mobile
   - A3: Hero kicker letter-spacing reduced
   - M1: Hero-main padding-left removed (container handles it)
   - M2: Route card padding reduced
   - A5: Footer mobile alignment made coherent
   ========================================================================= */

@media (max-width: 768px) {
    /* ── Spacing tokens: reducidos para pantallas pequeñas ── */
    :root {
        --spacing-xl: 3rem;
        --spacing-lg: 2.5rem;
        --spacing-md: 1.5rem;
    }
    
    body {
        font-size: 15px;
    }

    /* ── C2 fix: Hero viewport → min-height en lugar de height fija ──
       Permite que el contenido empuje si no cabe en el viewport. */
    .hero-viewport {
        min-height: calc(100svh - var(--nav-height));
        height: auto;
    }

    .hero-main,
    .hero-aside {
        flex: 0 0 auto;
    }

    /* ── Split Layout forzado a columna ── */
    .split-layout > div:first-child,
    .split-layout > div {
        border-right: none;
    }
    
    /* ── M1 fix: hero-main usa solo padding vertical.
       El .container hijo ya provee padding horizontal simétrico. ── */
    .hero-main {
        padding: var(--spacing-lg) 0;
        border-bottom: var(--border-weight) solid var(--c-indigo);
    }

    .hero-aside {
        padding: var(--spacing-md) 0;
    }

    /* ── A3 fix: Hero kicker — reducir letter-spacing para que
       "Conservatorio Iberoamericano de Teatro Musical" quepa en ~375px ── */
    .hero-kicker {
        letter-spacing: 0.5px;
        font-size: 0.75rem;
    }

    /* ── C4 fix: Botones — padding proporcional a pantalla móvil ── */
    .btn {
        padding: 1rem 2rem;
        font-size: 0.9rem;
    }

    /* ── M2 fix: Route cards — padding interno reducido ── */
    .route-card {
        padding: var(--spacing-md);
    }

    /* ── Founders Section ── */
    .founder-info {
        border-right: none;
        border-bottom: var(--border-weight) solid rgb(var(--c-paper-rgb) / 0.2);
        padding-bottom: var(--spacing-md);
        padding-right: 0;
    }
    
    .founder-bios {
        border-left: none;
        padding-left: 0;
    }
    
    /* ── A5 fix: Footer — hacer center coherente para TODOS los hijos ── */
    .main-footer {
        text-align: center;
    }

    .footer-nav ul li a {
        text-align: center;
    }

    .footer-legal {
        justify-content: center;
    }
}

/* ── Teléfonos muy pequeños ── */
@media (max-width: 480px) {
    /* A1 fix: reducir padding de container en pantallas < 480px */
    :root {
        --spacing-md: 1.25rem;
    }

    .btn {
        width: 100%;
        padding: 1rem 1.5rem;
    }

    .marquee-container {
        font-size: 0.875rem;
    }
}