/* UNIVERSIDAD INTERNACIONAL VIDA · Rediseño Awwwards (SimCodec)
   Paleta y tipografía provisionales: confirmar con la institución. */

@font-face { font-family: 'Inter'; src: url('fonts/inter-400-normal.woff2') format('woff2'); font-weight: 400; font-display: swap; }
@font-face { font-family: 'Inter'; src: url('fonts/inter-500-normal.woff2') format('woff2'); font-weight: 500; font-display: swap; }
@font-face { font-family: 'Inter'; src: url('fonts/inter-600-normal.woff2') format('woff2'); font-weight: 600; font-display: swap; }
@font-face { font-family: 'Inter Tight'; src: url('fonts/inter-tight-800-normal.woff2') format('woff2'); font-weight: 800; font-display: swap; }
@font-face { font-family: 'Instrument Serif'; src: url('fonts/instrument-serif-400-normal.woff2') format('woff2'); font-weight: 400; font-style: normal; font-display: swap; }

:root {
  --papel: #F5F3EE;
  --tinta: #14161C;
  --tinta-suave: #4A4F5A;
  --azul: #1F4E79;
  --azul-oscuro: #0E2238;
  --dorado: #B07A1E;
  --linea: rgba(20, 22, 28, 0.14);
  --header-h: 96px;
  --pad: clamp(20px, 4vw, 56px);
  --sans: 'Inter', system-ui, sans-serif;
  --display: 'Inter Tight', 'Inter', sans-serif;
  --serif: 'Instrument Serif', Georgia, serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: auto; }
html.lenis, html.lenis body { height: auto; }
body {
  margin: 0;
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--tinta);
  background: var(--papel);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
:focus-visible { outline: 3px solid var(--dorado); outline-offset: 3px; }

.saltar {
  position: absolute; left: -9999px; top: 8px; z-index: 300;
  background: var(--tinta); color: var(--papel); padding: 8px 14px;
}
.saltar:focus { left: 8px; }

.contenedor { width: min(1240px, 100% - var(--pad) * 2); margin-inline: auto; }
.etiqueta {
  font-size: 0.8rem; font-weight: 600; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--azul); margin: 0 0 16px;
}
.titulo-seccion {
  font-family: var(--display); font-weight: 800; letter-spacing: -0.02em;
  font-size: clamp(2.2rem, 5vw, 4.2rem); line-height: 1.02; margin: 0 0 32px;
}
.texto { font-size: 1.1rem; color: var(--tinta-suave); max-width: 60ch; margin: 0 0 18px; }
.texto-peq { font-size: 0.95rem; color: var(--tinta-suave); margin: 0; }

.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 16px 26px; border: 1px solid var(--tinta);
  background: var(--tinta); color: var(--papel);
  font: 600 1rem var(--sans); text-decoration: none; cursor: pointer;
  white-space: nowrap;
}
.btn:hover { background: var(--azul); border-color: var(--azul); }
.btn-sm { padding: 10px 16px; font-size: 0.9rem; }

/* AVISO DE DEMOSTRACIÓN */
.aviso {
  background: var(--azul-oscuro); color: #E9EEF4;
  font-size: 0.85rem; padding: 8px var(--pad); text-align: center;
  position: fixed; top: 0; left: 0; right: 0; z-index: 110;
}
.aviso p { margin: 0; line-height: 1.4; }
.aviso a { color: #FFFFFF; font-weight: 600; text-underline-offset: 3px; }
.aviso-corto { display: none; }

/* HEADER */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(245, 243, 238, 0.94);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--linea);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  padding: 16px var(--pad);
}
.logo { display: flex; align-items: center; gap: 12px; text-decoration: none; min-width: 0; }
.logo-marca {
  font: 800 1.1rem var(--display); letter-spacing: 0.04em;
  background: var(--azul); color: #FFFFFF; padding: 6px 10px;
}
.logo-texto { font-weight: 600; font-size: 0.95rem; white-space: nowrap; }
.nav { display: flex; gap: 22px; white-space: nowrap; }
.nav-link { text-decoration: none; font-size: 0.95rem; font-weight: 500; padding: 6px 0; }
.nav-link:hover { color: var(--azul); }
.hamburguesa {
  display: none; background: none; border: 0; padding: 10px; cursor: pointer;
  width: 48px; height: 48px; position: relative;
}
.hamburguesa span {
  position: absolute; left: 12px; right: 12px; height: 2px; background: var(--tinta);
  transition: transform 0.3s ease;
}
.hamburguesa span:first-child { top: 18px; }
.hamburguesa span:last-child { top: 28px; }
.menu-abierto .hamburguesa span:first-child { transform: translateY(5px) rotate(45deg); }
.menu-abierto .hamburguesa span:last-child { transform: translateY(-5px) rotate(-45deg); }

/* HERO: empieza debajo del header fijo */
.hero {
  min-height: min(100svh, 960px);
  padding: calc(var(--header-h) + 60px) var(--pad) 60px;
  display: flex; flex-direction: column; justify-content: flex-end;
  max-width: 1400px; margin-inline: auto;
}
.hero .etiqueta { margin-bottom: 24px; }
.hero-titulo {
  font-family: var(--display); font-weight: 800;
  font-size: clamp(3rem, 11vw, 11rem);
  line-height: 0.9; letter-spacing: -0.045em; margin: 0 0 40px;
}
.hero-titulo .linea-split { display: block; overflow: hidden; padding-bottom: 0.08em; }
.hero-pie {
  display: flex; align-items: flex-end; justify-content: space-between; gap: 32px;
  border-top: 1px solid var(--linea); padding-top: 28px; flex-wrap: wrap;
}
.hero-lead { font-size: 1.25rem; max-width: 48ch; margin: 0; color: var(--tinta-suave); }

/* MARQUESINA */
.marquesina {
  overflow: hidden; background: var(--tinta); color: var(--papel);
  padding: 22px 0; white-space: nowrap;
}
.marquesina-pista { display: inline-flex; gap: 48px; will-change: transform; }
.marquesina-pista span {
  font-family: var(--serif); font-style: normal; font-size: clamp(1.8rem, 4vw, 3rem);
  display: inline-flex; align-items: center; gap: 48px;
}
.marquesina-pista span::after { content: ''; width: 10px; height: 10px; border-radius: 50%; background: var(--dorado); }

/* NOSOTROS */
.nosotros, .proceso, .admisiones { padding: clamp(80px, 12vw, 160px) 0; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 6vw, 96px); align-items: start; }


/* OFERTA (horizontal fijada por ScrollTrigger) */
.oferta { background: var(--azul-oscuro); color: var(--papel); }
.oferta .etiqueta { color: #9FC3E6; }
.oferta-fijo { height: 100vh; display: flex; flex-direction: column; justify-content: center; overflow: hidden; }
.oferta-cabecera { padding-top: 40px; }
.oferta-cabecera .titulo-seccion { margin-bottom: 0; }
.oferta-pista {
  display: flex; gap: clamp(20px, 3vw, 40px);
  padding: 48px var(--pad) 60px; width: max-content; will-change: transform;
}
.tarjeta {
  width: clamp(280px, 30vw, 420px); min-height: 360px; flex-shrink: 0;
  border: 1px solid rgba(245, 243, 238, 0.22); padding: 32px;
  display: flex; flex-direction: column; gap: 16px; background: rgba(255, 255, 255, 0.03);
}
.tarjeta-num { font-family: var(--serif); font-size: 2.6rem; color: #9FC3E6; line-height: 1; }
.tarjeta h3 { font: 800 1.6rem/1.1 var(--display); margin: 0; letter-spacing: -0.01em; }
.tarjeta p { margin: 0; color: #C9D6E4; font-size: 1rem; }

/* PROCESO */
.pasos { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-top: 1px solid var(--linea); }
.pasos li { padding: 32px 32px 0 0; }
.pasos span { font-family: var(--serif); font-size: 2.4rem; color: var(--azul); }
.pasos h3 { font: 800 1.5rem var(--display); margin: 12px 0 8px; }
.pasos p { margin: 0; color: var(--tinta-suave); }

/* ADMISIONES Y FORMULARIO */
.admisiones { background: #ECE9E1; }
.formulario { display: grid; gap: 20px; background: var(--papel); padding: clamp(24px, 4vw, 40px); border: 1px solid var(--linea); }
.formulario label { display: grid; gap: 8px; font-weight: 600; font-size: 0.95rem; }
.formulario input, .formulario select {
  font: 400 1rem var(--sans); padding: 14px 14px; border: 1px solid #8A8F99;
  background: #FFFFFF; color: var(--tinta); border-radius: 0;
}
.formulario input:focus-visible, .formulario select:focus-visible { outline: 3px solid var(--dorado); outline-offset: 0; }
.nota-form { margin: 0; font-size: 0.9rem; color: var(--tinta-suave); }

/* FOOTER */
.site-footer { background: var(--tinta); color: #E3E6EB; padding: 64px 0 40px; }
.footer-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: end; }
.footer-marca { font: 800 1.6rem var(--display); margin: 0 0 12px; letter-spacing: -0.01em; }
.site-footer .texto-peq { color: #C4CAD3; }
.aviso-footer p { margin: 0; font-size: 0.9rem; color: #C4CAD3; }
.aviso-footer a { color: #FFFFFF; font-weight: 600; text-underline-offset: 3px; }

/* REVELADO AL SCROLL (sin JS, el contenido es visible) */
.reveal { opacity: 1; }
.js .reveal.preparado { opacity: 0; transform: translateY(28px); }

/* CURSOR PERSONALIZADO: solo puntero fino */
.cursor { display: none; }
@media (hover: hover) and (pointer: fine) {
  body.cursor-activo { cursor: none; }
  body.cursor-activo a, body.cursor-activo button { cursor: none; }
  .cursor {
    display: block; position: fixed; top: 0; left: 0; width: 14px; height: 14px;
    border-radius: 50%; background: var(--azul); pointer-events: none; z-index: 400;
    mix-blend-mode: difference; margin: -7px 0 0 -7px;
  }
}

/* CORTINA DE NAVEGACIÓN (solo con GSAP) */
.curtain {
  position: fixed; inset: 0; background: var(--azul-oscuro); z-index: 200;
  transform: translateY(-101%); pointer-events: none;
}

/* RESPONSIVE */
@media (max-width: 1100px) {
  .hamburguesa { display: block; }
  .nav, .header-cta { display: none; }
  .nav {
    position: fixed; inset: calc(var(--header-h) - 16px) 0 auto 0;
    flex-direction: column; gap: 0; background: var(--papel);
    padding: 8px var(--pad) 24px; border-bottom: 1px solid var(--linea);
    display: none;
  }
  .menu-abierto .nav { display: flex; }
  .menu-abierto .header-cta { display: none; }
  .nav-link { padding: 16px 0; border-bottom: 1px solid var(--linea); font-size: 1.1rem; }
  .header-inner { position: relative; }
  .logo-texto { display: none; }
}
@media (max-width: 900px) {
  .split, .footer-grid { grid-template-columns: 1fr; }
  .pasos { grid-template-columns: 1fr; }
  .pasos li { padding: 24px 0; border-bottom: 1px solid var(--linea); }
}
@media (max-width: 560px) {
  :root { --header-h: 130px; }
  .aviso-largo { display: none; }
  .aviso-corto { display: inline; }
  .aviso { font-size: 0.78rem; }

  .hero { min-height: auto; padding-bottom: 48px; }
  .hero-titulo { font-size: clamp(2.6rem, 14vw, 4rem); }
  .btn { white-space: normal; }
  .oferta-fijo { height: auto; padding: 64px 0; }
  .oferta-pista { width: auto; flex-direction: column; padding: 32px var(--pad); }
  .tarjeta { width: 100%; min-height: 0; }
}

/* MOVIMIENTO REDUCIDO */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .js .reveal.preparado { opacity: 1; transform: none; }
  .curtain { display: none; }
}