/* ============================================================
   AURA AI — Sistema de diseño accesible (POUR)
   Azul marino (principal) · Rojo vino (acento) · fondos claros
   Tipografía: Atkinson Hyperlegible (alta legibilidad / baja visión)
   ============================================================ */

/* ---------- Tokens ---------- */
:root {
  /* Color: alto contraste sobre fondos claros */
  --ink:        #14213d;   /* texto principal — navy casi negro */
  --ink-soft:   #41506b;   /* texto secundario (AA sobre fondo claro) */
  --navy:       #1f3a68;   /* azul marino principal */
  --navy-deep:  #15233f;   /* navy profundo (header, footer) */
  --navy-700:   #20406f;   /* enlaces */
  --wine:       #8a1c2b;   /* rojo vino — acento */
  --wine-deep:  #6c1320;   /* hover acento */
  --wine-tint:  #f4e7e8;   /* fondo tenue acento */

  --bg:         #f6f4ef;   /* página — blanco cálido */
  --bg-alt:     #efe9e0;   /* banda alterna */
  --surface:    #ffffff;   /* tarjetas */
  --line:       #d8d1c4;   /* bordes */
  --line-strong:#b9b0a0;

  --focus:      #8a1c2b;   /* anillo de foco */

  /* Tipografía */
  --font: "Atkinson Hyperlegible", system-ui, -apple-system, Segoe UI, sans-serif;

  /* Escala (rem). El control de tamaño cambia html{font-size} */
  --step--1: 0.94rem;
  --step-0:  1.06rem;   /* cuerpo */
  --step-1:  1.32rem;
  --step-2:  1.66rem;
  --step-3:  2.15rem;
  --step-4:  2.9rem;
  --step-5:  3.8rem;

  --radius: 12px;
  --radius-sm: 8px;
  --maxw: 1120px;
  --gap: clamp(1.5rem, 4vw, 3rem);

  --shadow: 0 1px 2px rgba(20,33,61,.06), 0 8px 24px rgba(20,33,61,.07);
}

/* Base de tamaño — el botón A+/A- ajusta esto */
html { font-size: 118%; -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce){ html{ scroll-behavior:auto; } *{ animation-duration:.001ms !important; transition-duration:.001ms !important; } }

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: var(--step-0);
  line-height: 1.65;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* ---------- Foco visible (Operable) ---------- */
:focus { outline: none; }
:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
  border-radius: 4px;
}
a:focus-visible, button:focus-visible, input:focus-visible,
textarea:focus-visible, select:focus-visible, [tabindex]:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

/* ---------- Skip link (Operable) ---------- */
.skip-link {
  position: absolute;
  left: 1rem; top: -200px;
  background: var(--wine);
  color: #fff;
  padding: .85rem 1.25rem;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  font-weight: 700;
  z-index: 1000;
  transition: top .15s ease;
  text-decoration: none;
}
.skip-link:focus { top: 0; }


/* ---------- Tipografía ---------- */
h1,h2,h3,h4 { color: var(--ink); line-height: 1.15; margin: 0 0 .5em; font-weight: 700; text-wrap: balance; }
h1 { font-size: var(--step-5); letter-spacing: -.01em; }
h2 { font-size: var(--step-3); }
h3 { font-size: var(--step-2); }
h4 { font-size: var(--step-1); }
p  { margin: 0 0 1rem; max-width: 66ch; text-wrap: pretty; }
.lead { font-size: var(--step-1); color: var(--ink-soft); line-height: 1.5; }
strong { font-weight: 700; }

a { color: var(--navy-700); text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 2px; }
a:hover { color: var(--wine-deep); }

.eyebrow {
  display: inline-flex; align-items: center; gap: .55rem;
  font-size: var(--step--1); font-weight: 700;
  letter-spacing: .12em; text-transform: uppercase;
  color: var(--wine);
}
.eyebrow::before { content: ""; width: 1.6rem; height: 3px; background: var(--wine); border-radius: 2px; }

/* ---------- Layout ---------- */
.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: clamp(1.15rem, 4vw, 2.5rem); }
.section { padding-block: clamp(3rem, 7vw, 5.5rem); }
.section--alt { background: var(--bg-alt); border-block: 1px solid var(--line); }
.section--navy { background: var(--navy-deep); color: #eef1f7; }
.section--navy h1,.section--navy h2,.section--navy h3 { color: #fff; }
.section--navy p { color: #c9d2e4; }
.section__head { max-width: 60ch; margin-bottom: clamp(1.75rem, 4vw, 2.75rem); }

.grid { display: grid; gap: var(--gap); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 860px){ .grid-2,.grid-3 { grid-template-columns: 1fr; } }

/* ---------- Botones (áreas táctiles grandes — Operable) ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .6rem;
  min-height: 56px; padding: .85rem 1.6rem;
  font-family: inherit; font-size: var(--step-0); font-weight: 700;
  border-radius: var(--radius-sm); border: 2px solid transparent;
  text-decoration: none; cursor: pointer; line-height: 1.2;
  transition: background .15s, color .15s, border-color .15s, transform .05s;
}
.btn:active { transform: translateY(1px); }
.btn--primary { background: var(--wine); color: #fff; }
.btn--primary:hover { background: var(--wine-deep); color:#fff; }
.btn--navy { background: var(--navy); color: #fff; }
.btn--navy:hover { background: var(--navy-deep); color:#fff; }
.btn--ghost { background: var(--surface); color: var(--navy-700); border-color: var(--line-strong); }
.btn--ghost:hover { border-color: var(--navy); color: var(--navy-deep); }
.btn--lg { min-height: 64px; font-size: var(--step-1); padding-inline: 2rem; }
.btn .ico { width: 1.35em; height: 1.35em; flex: none; }

/* ---------- Tarjetas ---------- */
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(1.5rem, 3vw, 2.25rem);
  box-shadow: var(--shadow);
}
.card h3 { margin-top: .25rem; }

/* Tarjeta-enlace grande de navegación (Operable: target enorme) */
.navcard {
  display: flex; flex-direction: column; gap: .65rem;
  background: var(--surface);
  border: 2px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(1.4rem, 3vw, 2rem);
  text-decoration: none; color: var(--ink);
  min-height: 150px;
  transition: border-color .15s, transform .08s, box-shadow .15s;
}
.navcard:hover { border-color: var(--wine); color: var(--ink); box-shadow: var(--shadow); transform: translateY(-2px); }
.navcard .navcard__n { font-size: var(--step--1); font-weight: 700; color: var(--wine); letter-spacing:.08em; }
.navcard h3 { margin: 0; font-size: var(--step-1); }
.navcard p { margin: 0; color: var(--ink-soft); font-size: var(--step-0); }
.navcard__go { margin-top: auto; font-weight: 700; color: var(--navy-700); display:inline-flex; align-items:center; gap:.4rem; }

/* Iconos de función (formas simples, no decorativas sin texto) */
.feature__icon {
  width: 64px; height: 64px; border-radius: 14px;
  background: var(--wine-tint); color: var(--wine);
  display: grid; place-items: center; margin-bottom: 1rem;
}
.feature__icon svg { width: 34px; height: 34px; }

/* ---------- Placeholder de imagen (etiquetado, con alt en uso real) ---------- */
.ph {
  position: relative;
  background:
    repeating-linear-gradient(135deg, #e7e0d4 0 14px, #efe9df 14px 28px);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  display: grid; place-items: center;
  color: var(--navy-deep);
  min-height: 240px;
  overflow: hidden;
}
.ph__tag {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: .85rem;
  background: rgba(255,255,255,.85);
  border: 1px solid var(--line-strong);
  padding: .4rem .7rem; border-radius: 6px;
  max-width: 80%; text-align: center;
  color: var(--navy-deep);
}

/* Lista de verificación / chips */
.checklist { list-style: none; margin: 0; padding: 0; display: grid; gap: .85rem; }
.checklist li { display: flex; gap: .75rem; align-items: flex-start; }
.checklist .mk { flex: none; width: 1.7em; height: 1.7em; border-radius: 6px; background: var(--wine); color:#fff; display: grid; place-items: center; font-weight: 700; margin-top: .1em; }

.pill { display:inline-flex; align-items:center; gap:.5rem; background: var(--wine-tint); color: var(--wine-deep); font-weight:700; font-size: var(--step--1); padding:.4rem .85rem; border-radius: 999px; border:1px solid #e3c9cc; }

/* ---------- Header / Nav (consistente en todo el sitio) ---------- */
.site-header { position: sticky; top: 0; z-index: 100; background: var(--navy-deep); color: #fff; border-bottom: 3px solid var(--wine); }
.site-header .container { display: flex; align-items: center; gap: 1.25rem; min-height: 76px; flex-wrap: wrap; }
.brand { display: inline-flex; align-items: center; gap: .7rem; text-decoration: none; color: #fff; font-weight: 700; font-size: var(--step-1); }
.brand:hover { color:#fff; }
.brand .logo { width: 52px; height: 52px; background: url(logo.png) center/contain no-repeat; filter: brightness(0) invert(1); flex: none; animation: logo-blink 7s ease-in-out infinite; }
@keyframes logo-blink {
  0%, 38%, 100% { transform: scaleY(1);  filter: brightness(0) invert(1); }
  44%           { transform: scaleY(0);  filter: brightness(0) invert(1); }
  54%           { transform: scaleY(1);  filter: brightness(0) invert(1) drop-shadow(0 0 10px #fff) drop-shadow(0 0 20px rgba(255,255,255,.5)); }
  68%           { transform: scaleY(1);  filter: brightness(0) invert(1); }
}
.brand small { display:block; font-weight:400; font-size: .46em; color:#aebbd6; letter-spacing:0; white-space: nowrap; }

.mainnav { margin-left: auto; }
.mainnav ul { list-style: none; display: flex; gap: .35rem; margin: 0; padding: 0; flex-wrap: wrap; }
.mainnav a {
  display: inline-flex; align-items: center; min-height: 48px;
  padding: .5rem .95rem; border-radius: var(--radius-sm);
  color: #dbe2f0; text-decoration: none; font-weight: 700; font-size: var(--step--1);
  border: 2px solid transparent;
}
.mainnav a:hover { background: rgba(255,255,255,.1); color: #fff; }
.mainnav a[aria-current="page"] { color: #fff; background: var(--wine); }
@media (max-width: 760px){
  .site-header .container { min-height: 64px; }
  .mainnav { width: 100%; margin-left: 0; }
  .mainnav ul { justify-content: flex-start; }
}

/* ---------- Barra de accesibilidad ---------- */
.a11y-bar { background: var(--bg-alt); border-bottom: 1px solid var(--line); }
.a11y-bar .container { display: flex; align-items: center; gap: .75rem; flex-wrap: wrap; padding-block: .5rem; }
.a11y-bar .a11y-label { font-size: var(--step--1); font-weight: 700; color: var(--navy-deep); display:inline-flex; align-items:center; gap:.45rem; }
.a11y-group { display: inline-flex; align-items: center; gap: .4rem; }
.a11y-btn {
  display: inline-flex; align-items: center; gap: .45rem;
  min-height: 44px; padding: .35rem .8rem;
  background: var(--surface); border: 2px solid var(--line-strong);
  border-radius: var(--radius-sm); cursor: pointer;
  font-family: inherit; font-weight: 700; font-size: var(--step--1); color: var(--navy-deep);
}
.a11y-btn:hover { border-color: var(--navy); }
.a11y-btn[aria-pressed="true"] { background: var(--wine); color: #fff; border-color: var(--wine); }
.a11y-btn .ico { width: 1.2em; height: 1.2em; }
.a11y-sep { width:1px; align-self: stretch; background: var(--line-strong); margin-inline:.3rem; }
.a11y-size-val { font-variant-numeric: tabular-nums; min-width: 3.2em; text-align:center; font-weight:700; font-size: var(--step--1); color: var(--navy-deep); }

/* ---------- Hero (compartido) ---------- */
.hero { padding-block: clamp(2.5rem, 6vw, 4.5rem); }
.hero__slogan { color: var(--wine); font-weight: 700; }
.hero__inner { display: grid; gap: var(--gap); align-items: center; }
.hero__media .ph { width: 100%; }

/* === Dirección A — Sobrio centrado === */
[data-dir="a"] .hero__inner { grid-template-columns: 1fr; text-align: center; max-width: 920px; margin-inline: auto; }
[data-dir="a"] .hero__cta { justify-content: center; }
[data-dir="a"] .hero__text p { margin-inline: auto; }
[data-dir="a"] .hero__media { max-width: 760px; margin-inline: auto; width: 100%; margin-top: .5rem; }

/* === Dirección B — Editorial dividido === */
[data-dir="b"] .hero__inner { grid-template-columns: 1.05fr .95fr; }
[data-dir="b"] .hero { background: linear-gradient(180deg, var(--bg) 0%, var(--bg-alt) 100%); }

/* === Dirección C — Acción directa (banda navy + tarjetas grandes) === */
[data-dir="c"] .hero { background: var(--navy-deep); padding-block: clamp(2.25rem, 5vw, 3.5rem); }
[data-dir="c"] .hero h1 { color: #fff; }
[data-dir="c"] .hero .hero__slogan { color: #fff; }
[data-dir="c"] .hero .lead { color: #c9d2e4; }
[data-dir="c"] .hero .eyebrow { color: #f3c9cf; }
[data-dir="c"] .hero .eyebrow::before { background: #f3c9cf; }
[data-dir="c"] .hero__inner { grid-template-columns: .7fr 1.3fr; }
[data-dir="c"] .hero__media .ph { min-height: 0; aspect-ratio: 16/10; }
[data-dir="c"] .hero .btn--ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,.6); }
[data-dir="c"] .hero .btn--ghost:hover { background: rgba(255,255,255,.12); color: #fff; }
[data-dir="c"] .navgrid { grid-template-columns: repeat(2, 1fr); }
[data-dir="c"] .navgrid .navcard { min-height: 188px; }
[data-dir="c"] .navgrid .navcard h3 { font-size: var(--step-2); }

@media (max-width: 860px){
  [data-dir="b"] .hero__inner,
  [data-dir="c"] .hero__inner,
  [data-dir="c"] .navgrid { grid-template-columns: 1fr; }
}

/* ---------- Footer ---------- */
.site-footer { background: var(--navy-deep); color: #c9d2e4; padding-block: clamp(2.5rem,5vw,3.5rem); }
.site-footer a { color: #dbe2f0; }
.site-footer a:hover { color: #fff; }
.site-footer h2,.site-footer h3 { color: #fff; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: var(--gap); }
@media (max-width: 760px){ .footer-grid { grid-template-columns: 1fr; } }
.footer-grid ul { list-style:none; margin:.5rem 0 0; padding:0; display:grid; gap:.5rem; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.15); margin-top: 2rem; padding-top: 1.5rem; font-size: var(--step--1); color:#aebbd6; display:flex; gap:1rem; flex-wrap:wrap; justify-content:space-between; }

/* ---------- Utilidades ---------- */
.stack > * + * { margin-top: 1rem; }
.cluster { display: flex; flex-wrap: wrap; gap: 1rem; align-items: center; }
.center { text-align: center; }
.mt-0{margin-top:0}.mb-0{margin-bottom:0}
.visually-hidden {
  position:absolute !important; width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}
.note { font-size: var(--step--1); color: var(--ink-soft); }

/* Estado "leyendo" para TTS */
body.is-reading .read-indicator { display: inline-flex; }
.read-indicator { display:none; }

/* Halo de respiración en imágenes — sincronizado con logo-blink (7s) */
@keyframes halo-breath {
  0%, 100% { box-shadow: 0 0 0 2px rgba(20,33,61,0.12), 0 0 4px 2px rgba(255,255,255,0.06); }
  54%      { box-shadow: 0 0 0 3px rgba(20,33,61,0.28), 0 0 20px 8px rgba(255,255,255,0.42); }
}
.img-halo { animation: halo-breath 7s ease-in-out infinite; }