/* ========================================
   INDEPAR - Estilos Globales
   Instituto de Estrategia Integral para el Retiro
   ======================================== */

/* --- Variables --- */
:root {
  /* Paleta completa del logo, guinda como acento (docs/identidad/sistema-visual.md v1.0, IND-0100) */
  --marca: #6E3A46;
  --marca-oscuro: #55303A;
  --marca-profundo: #432830;
  --superficie-oscura: #2B2627;
  --superficie-oscura-2: #3A3334;
  --acento: #C1A38D;
  --acento-texto: #965A4E;
  --acento-claro: #DFB090;
  --rosa: #C08375;
  --gris-1: #888787;
  --gris-2: #4B4A4A;
  --fondo-alt: #F7F1EC;
  --fondo-alt-2: #EEEAE7;
  --linea: #E5DCD6;
  --texto: #3D3436;
  --texto-2: #6B6164;
  --blanco: #FFFFFF;
  --foco: var(--marca);
  --marca-rgb: 110 58 70;
  --marca-oscuro-rgb: 85 48 58;
  --superficie-oscura-rgb: 43 38 39;
  --acento-rgb: 193 163 141;
  --acento-claro-rgb: 223 176 144;
  /* Alias de los nombres anteriores: mismo nombre, valor nuevo.
     Desde IND-0100 --navy es el carbón de titulares y superficies (no la marca) */
  --navy: var(--texto);
  --navy-dark: var(--superficie-oscura);
  --gold: var(--acento);
  --gold-light: var(--acento-claro);
  --bg-alt: var(--fondo-alt);
  --text-primary: var(--texto);
  --text-secondary: var(--texto-2);
  --white: var(--blanco);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
  --transition: 0.3s ease;
  --max-width: 1140px;
}

/* --- Reset --- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Inter', sans-serif;
  font-size: 17px; /* IND-0096: texto base 17 px (antes 16 px), lectura 50+ */
  line-height: 1.7;
  color: var(--text-primary);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Merriweather', serif;
  font-weight: 700;
  line-height: 1.3;
  color: var(--navy);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; margin-bottom: 1rem; }
h3 { font-size: 1.5rem; margin-bottom: 0.75rem; }
h4 { font-size: 1.25rem; margin-bottom: 0.5rem; }

p {
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

/* --- Layout --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 5rem 0;
}

.section--alt {
  background: var(--bg-alt);
}

/* IND-0100: las secciones alternas se turnan arena (--fondo-alt) y piedra (--fondo-alt-2) */
.section--alt:nth-of-type(4n+2) {
  background: var(--fondo-alt-2);
}

.section__header {
  text-align: center;
  margin-bottom: 3rem;
}

.section__header p {
  max-width: 640px;
  margin: 0.5rem auto 0;
  font-size: 1.1rem;
}

/* --- Gold accent line --- */
.gold-line {
  width: 60px;
  height: 3px;
  background: var(--gold);
  margin: 1rem auto;
  border-radius: 2px;
}

.gold-line--left {
  margin-left: 0;
}

/* IND-0096: foco visible discreto, solo con teclado (:focus-visible no se activa con ratón ni dedo).
   Las reglas de foco propias de cada componente siguen mandando por especificidad. */
:focus-visible {
  outline: 2px solid var(--foco);
  outline-offset: 2px;
}

/* IND-0100: sobre superficies oscuras (carbón) el foco usa durazno: vino sobre carbón no llega a 3:1 */
.hero :focus-visible,
.page-hero :focus-visible,
.home-cierre :focus-visible,
.footer :focus-visible {
  outline-color: var(--acento-claro);
}

/* ========================================
   NAVIGATION
   ======================================== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--white);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.nav__brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: 'Merriweather', serif;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--navy);
}

.nav__brand img {
  height: 44px;
  width: auto;
}

.nav__links {
  display: flex;
  gap: 2rem;
}

.nav__link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 0.25rem 0;
  display: inline-flex; /* IND-0096: área de toque ≥44 px */
  align-items: center;
  min-height: 44px;
  transition: color var(--transition);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 3px; /* IND-0096: misma posición visual del subrayado con el alto de 44 px */
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gold);
  transition: width var(--transition);
}

.nav__link:hover,
.nav__link--active {
  color: var(--marca);
}

.nav__link:hover::after,
.nav__link--active::after {
  width: 100%;
}

/* Enlace destacado del journey (IND-0022): sutil distinción dorada
   para que la pieza principal del lado humano destaque en la nav. */
.nav__link--featured {
  color: var(--marca);
  font-weight: 600;
}

.nav__link--featured::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--gold);
  border-radius: 50%;
  display: inline-block;
  margin-right: 0.45rem;
  transform: translateY(-1px);
}

.nav__mobile a.nav__link--featured-mobile {
  color: var(--marca);
  font-weight: 600;
}

.nav__mobile a.nav__link--featured-mobile::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--gold);
  border-radius: 50%;
  display: inline-block;
  margin-right: 0.5rem;
  transform: translateY(-1px);
}

/* Hamburger */
.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
  min-width: 44px; /* IND-0096: área de toque ≥44 px; el ícono no se mueve */
  min-height: 44px;
  align-items: center;
  justify-content: center;
  margin-right: -10px;
}

.nav__hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--navy);
  transition: var(--transition);
  border-radius: 1px;
}

/* Mobile menu */
.nav__mobile {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--white);
  padding: 2rem 1.5rem;
  z-index: 999;
  opacity: 0;
  transform: translateY(-10px);
  transition: opacity var(--transition), transform var(--transition);
}

.nav__mobile.is-open {
  display: block;
  opacity: 1;
  transform: translateY(0);
}

.nav__mobile a {
  display: block;
  padding: 1rem 0;
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--text-primary);
  border-bottom: 1px solid var(--bg-alt);
}

.nav__mobile a:hover,
.nav__mobile a.nav__link--active {
  color: var(--acento-texto);
}

/* Hamburger active state */
.nav__hamburger.is-active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav__hamburger.is-active span:nth-child(2) {
  opacity: 0;
}

.nav__hamburger.is-active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Body offset for fixed nav */
body {
  padding-top: 72px;
}

/* ========================================
   PAGE HERO (inner pages)
   ======================================== */
.page-hero {
  background: linear-gradient(135deg, var(--superficie-oscura-2) 0%, var(--superficie-oscura) 100%);
  padding: 4rem 0;
  text-align: center;
}

.page-hero h1 {
  color: var(--white);
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

.page-hero .gold-line {
  margin-top: 1rem;
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
  background: var(--navy-dark);
  color: rgba(255, 255, 255, 0.7);
  border-top: 3px solid var(--gold);
}

.footer__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 3.5rem 1.5rem 2rem;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 3rem;
  margin-bottom: 2.5rem;
}

.footer__brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.footer__brand img {
  height: 48px;
  width: auto;
}

.footer__brand span {
  font-family: 'Merriweather', serif;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--white);
}

/* Pie: palabra de marca en lugar de la ilustración (fondo oscuro; IND-0083) */
.footer__wordmark {
  font-family: 'Merriweather', Georgia, serif;
  font-weight: 900;
  font-size: 1.6rem;
  letter-spacing: 0.04em;
  color: var(--acento-claro);
}

.footer__desc {
  font-size: 0.9rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.6);
}

.footer__title {
  font-family: 'Inter', sans-serif;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--acento-claro);
  margin-bottom: 1.25rem;
}

.footer__links a {
  display: flex; /* IND-0096: área de toque ≥44 px */
  align-items: center;
  min-height: 44px;
  padding: 0.35rem 0;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.6);
  transition: color var(--transition);
}

.footer__links a:hover {
  color: var(--white);
}

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 1.5rem;
  text-align: center;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.5); /* IND-0096: 0.4 → 0.5, contraste 3.6 → 4.9:1 */
}


/* ========================================
   UTILITIES
   ======================================== */
.text-center { text-align: center; }
.text-gold { color: var(--acento-texto); }
.text-navy { color: var(--navy); }
.mb-0 { margin-bottom: 0; }

/* ========================================
   RESPONSIVE
   ======================================== */

/* Tablet */
@media (max-width: 1024px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }
  .section { padding: 4rem 0; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
}

/* Mobile */
@media (max-width: 768px) {
  h1 { font-size: 1.75rem; }
  h2 { font-size: 1.5rem; }
  h3 { font-size: 1.25rem; }
  .section { padding: 3rem 0; }
  .container { padding: 0 1rem; }

  .nav__links { display: none; }
  .nav__hamburger { display: flex; }

  .footer__grid { grid-template-columns: 1fr; gap: 2rem; }
  .page-hero { padding: 3rem 0; }
  .page-hero h1 { font-size: 2rem; }
}