:root {
  --negro: #0d0e10;
  --negro-2: #080808;
  --texto: #f4f2ee;
  --texto-suave: #cfccc4;
  --gris: #8f8c85;
  --linea: #25272b;
  --oro: #d9b46a;
  --oro-claro: #f0d49a;
  --cafe: #6b5220;
  --azul: #2f9bff;
  --azul-claro: #6db9ff;
  --marino: #06152c;
  --marino-2: #0b2242;
  --crema: #f3f1ec;
  --tinta: #141413;
  --tinta-suave: #45423c;
  --display: 'Archivo', system-ui, sans-serif;
  --cuerpo: 'Barlow', system-ui, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 96px; }
body { margin: 0; font-family: var(--cuerpo); background: var(--negro); color: var(--texto); line-height: 1.4; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--oro); }
a:hover { color: var(--oro-claro); }
h1, h2, p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }
:focus-visible { outline: 3px solid var(--azul); outline-offset: 2px; }

.contenedor { width: 100%; max-width: 1440px; margin: 0 auto; padding: 0 clamp(20px, 5.5vw, 80px); }

.eyebrow { font-size: 14px; font-weight: 600; letter-spacing: 0.22em; }
.oro { color: var(--oro); }
.azul { color: var(--azul-claro); }
.gris { color: var(--gris); }
.cafe { color: var(--cafe); }
.lead { font-size: clamp(18px, 1.6vw, 22px); line-height: 1.5; }

/* Botones */
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 12px 22px; border: 0; border-radius: 4px; font-family: var(--cuerpo); font-weight: 700; font-size: 16px; text-decoration: none; cursor: pointer; }
.btn-oro { background: var(--oro); color: #111; }
.btn-oro:hover { background: var(--oro-claro); color: #111; }
.btn-negro { background: var(--tinta); color: #fff; font-family: var(--display); font-weight: 800; letter-spacing: 0.04em; }
.btn-negro:hover { background: #2c2a26; }
.btn-negro:disabled { opacity: 0.6; cursor: wait; }
.btn-grande { min-height: 56px; padding: 16px 34px; font-size: 18px; }

/* Header */
.header { position: sticky; top: 0; z-index: 10; background: var(--negro); border-bottom: 1px solid var(--linea); }
.header-fila { min-height: 96px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.logo img { width: 225px; height: 60px; object-fit: contain; }
.nav { display: flex; align-items: center; gap: 28px; font-weight: 500; }
.nav-link { color: #e8e5de; text-decoration: none; }
.nav-link:hover { color: var(--oro); }
.btn-wa { display: inline-flex; align-items: center; gap: 8px; min-height: 48px; padding: 0 16px; border: 1px solid #3a3d42; border-radius: 4px; color: var(--texto); font-weight: 600; text-decoration: none; }
.btn-wa:hover { border-color: var(--oro); color: var(--texto); }

/* Hero */
.hero { padding: 80px 0; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1fr) 500px; gap: 80px; }
.hero-texto { display: flex; flex-direction: column; justify-content: space-between; gap: 48px; }
.hero-principal { display: flex; flex-direction: column; align-items: flex-start; gap: 26px; }
.hero h1 { font-family: var(--display); font-weight: 900; font-size: clamp(64px, 8.4vw, 120px); line-height: 0.92; letter-spacing: -0.02em; }
.hero .lead { color: var(--texto-suave); max-width: 600px; }
.hero-datos { margin: 0; display: flex; align-items: center; gap: 32px; flex-wrap: wrap; }
.hero-datos dt { font-size: 13px; letter-spacing: 0.18em; color: var(--gris); margin-bottom: 4px; }
.hero-datos dd { margin: 0; font-size: 20px; font-weight: 600; }
.hero-datos .sep { width: 1px; height: 44px; background: #3a3d42; }
.hero-marcas { display: flex; flex-direction: column; gap: 14px; min-height: 600px; }
.tarjeta-marca { flex: 1; display: block; border-radius: 4px; background-size: cover; background-repeat: no-repeat; transition: transform .2s ease; }
.tarjeta-marca:hover { transform: translateY(-2px); }
.tarjeta-premera { background-color: #0b0b0b; background-image: url('../img/expo-cihac-2026/premera-fondo.webp'); background-position: center; border: 1px solid var(--oro); border-top: 6px solid var(--oro); }
.tarjeta-psi { background-color: #4a7c95; background-image: url('../img/expo-cihac-2026/psi-fondo.webp'); background-position: center 40%; border: 1px solid var(--azul); border-top: 6px solid var(--azul); }

/* Contacto */
.contacto { background: var(--crema); color: var(--tinta); padding: 56px 0; }
.contacto-fila { display: flex; align-items: center; justify-content: space-between; gap: 40px; flex-wrap: wrap; }
.contacto h2 { font-family: var(--display); font-weight: 900; font-size: clamp(30px, 3vw, 40px); }
.contacto p { font-size: 20px; color: var(--tinta-suave); margin-top: 8px; }
.contacto-botones { display: flex; gap: 20px; flex-wrap: wrap; }
.contacto-btn { display: flex; align-items: center; gap: 16px; padding: 20px 26px; border-radius: 6px; text-decoration: none; }
.contacto-btn span { display: flex; flex-direction: column; gap: 2px; }
.contacto-btn small { font-size: 13px; letter-spacing: 0.14em; }
.contacto-btn strong { font-size: clamp(19px, 1.7vw, 24px); }
.contacto-btn.oscuro { background: var(--tinta); color: #fff; }
.contacto-btn.oscuro small { color: var(--oro); }
.contacto-btn.oscuro:hover { background: #2c2a26; color: #fff; }
.contacto-btn.claro { background: #fff; border: 2px solid var(--tinta); color: var(--tinta); }
.contacto-btn.claro small { color: var(--cafe); }
.contacto-btn.claro:hover { background: #faf8f3; color: var(--tinta); }

/* Marcas */
.marca { padding: 80px 0; }
.premera { background: var(--negro-2); border-top: 6px solid var(--oro); }
.psi { background: var(--marino); border-top: 6px solid var(--azul); }
.marca-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 80px; align-items: center; }
.marca-texto { display: flex; flex-direction: column; gap: 26px; }
.marca-nombre { font-family: var(--display); font-weight: 900; font-size: clamp(48px, 4.5vw, 64px); letter-spacing: 0.03em; line-height: 1.05; margin-bottom: 6px; }
.marca-nombre sup { font-size: 0.34em; color: var(--oro); }
.raya { display: block; width: 96px; height: 3px; background: var(--oro); }
.psi .raya { background: var(--azul); }
.marca h2 { font-family: var(--display); font-weight: 800; font-size: clamp(32px, 3vw, 44px); line-height: 1.08; }
.premera .lead { color: var(--texto-suave); }
.psi .lead { color: #c8d4e6; }
.cierre { font-size: 20px; line-height: 1.5; }
.marca-img { width: 100%; max-width: 580px; border-radius: 4px; justify-self: end; }
.invertido .marca-img { justify-self: start; }
.premera .marca-img { border: 1px solid #3a3122; }
.psi .marca-img { border: 1px solid #1c3a66; }
.chips { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 12px; }
.chips li { padding: 12px 18px; border: 1px solid #5a4a2c; border-radius: 4px; color: var(--oro-claro); font-weight: 600; font-size: 17px; }
.aplicaciones { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.aplicaciones li { padding: 16px; background: var(--marino-2); border-radius: 4px; display: flex; flex-direction: column; gap: 4px; }
.aplicaciones strong { font-size: 17px; }
.aplicaciones span { font-size: 15px; color: #a9bdd8; }
.beneficios { display: flex; flex-wrap: wrap; gap: 10px 24px; font-size: 14px; font-weight: 600; letter-spacing: 0.16em; color: var(--azul-claro); }

/* Registro */
.registro { background: var(--crema); color: var(--tinta); padding: 88px 0; }
.registro-grid { display: grid; grid-template-columns: 440px minmax(0, 1fr); gap: 80px; align-items: start; }
.registro-intro { display: flex; flex-direction: column; gap: 24px; }
.registro h2 { font-family: var(--display); font-weight: 900; font-size: clamp(40px, 4vw, 56px); line-height: 1; }
.registro .lead { color: var(--tinta-suave); }
.registro-contacto { display: flex; flex-direction: column; gap: 14px; padding-top: 20px; border-top: 1px solid #d6d2c8; }
.registro-contacto a { display: flex; align-items: center; gap: 12px; font-size: 20px; font-weight: 700; color: var(--tinta); text-decoration: none; }
.registro-contacto a:hover { color: var(--cafe); }

.form { background: #fff; padding: clamp(24px, 3vw, 44px); border: 1px solid #e0dcd2; border-radius: 6px; display: flex; flex-direction: column; gap: 22px; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.form label { display: flex; flex-direction: column; gap: 8px; font-size: 15px; font-weight: 600; color: #2c2a26; }
.form input[type="text"], .form input[type="email"], .form input[type="tel"], .form select { height: 52px; padding: 0 14px; font: inherit; font-size: 17px; font-weight: 400; border: 1px solid #c9c4b8; border-radius: 4px; background: #fbfaf7; color: var(--tinta); width: 100%; }
.form select { padding: 0 12px; }
.form .check { flex-direction: row; align-items: flex-start; gap: 12px; font-weight: 500; font-size: 16px; }
.check input { width: 22px; height: 22px; margin: 1px 0 0; accent-color: var(--tinta); flex-shrink: 0; }
.check a { color: var(--cafe); }
.trampa { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.mensaje { padding: 14px 16px; border-radius: 4px; font-size: 16px; }
.mensaje.ok { background: #e7f2ea; border: 1px solid #93c4a1; color: #1d5b31; }
.mensaje.error { background: #fbeaea; border: 1px solid #d99a9a; color: #8c1d1d; }
.form-pie { display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.nota { font-size: 14px; color: #6b675f; max-width: 420px; }

/* Footer */
.footer { background: var(--negro); border-top: 1px solid var(--linea); padding: 48px 0; }
.footer-fila { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.footer-marca { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; font-size: 15px; color: var(--gris); }
.footer-marca img { width: 180px; height: 48px; object-fit: contain; }
.footer-links { display: flex; gap: 28px; flex-wrap: wrap; font-weight: 600; }
.footer-links a { color: var(--texto); }

/* Tablet */
@media (max-width: 1100px) {
  .nav-link { display: none; }
  .hero-grid, .marca-grid, .registro-grid { grid-template-columns: 1fr; gap: 48px; }
  .hero-marcas { min-height: 0; flex-direction: row; }
  .tarjeta-marca { aspect-ratio: 2 / 1; }
  .marca-img, .invertido .marca-img { justify-self: center; }
  .invertido .marca-img { order: 2; }
}

/* Móvil */
@media (max-width: 640px) {
  html { scroll-padding-top: 76px; }
  .header-fila { min-height: 76px; }
  .logo img { width: 150px; height: 40px; }
  .nav { gap: 10px; }
  .btn-wa span { display: none; }
  .btn-wa { padding: 0 12px; }
  .hero, .marca { padding: 56px 0; }
  .hero-marcas { flex-direction: column; }
  .hero-datos .sep { display: none; }
  .contacto-btn { width: 100%; }
  .aplicaciones { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .form-pie .btn { width: 100%; }
  .registro { padding: 56px 0; }
}

/* Ajustes de desborde */
.contacto-botones { max-width: 100%; }
.contacto-btn { min-width: 0; max-width: 100%; }
.contacto-btn strong { overflow-wrap: anywhere; }
@media (max-width: 640px) {
  .contacto-botones { width: 100%; }
  .contacto-btn { padding: 18px 20px; }
}

/* PPC */
.tarjeta-ppc { background-color: #101418; background-image: url('../img/expo-cihac-2026/ppc-fondo.webp'); background-position: center; background-size: auto 78%; border: 1px solid #f2c200; border-top: 6px solid #f2c200; }
.ppc { background: #111111; border-top: 6px solid #f2c200; }
.ppc .marca-nombre { color: #f2c200; }
.ppc .eyebrow { color: var(--texto); }
.ppc .raya { background: #f2c200; }
.ppc .lead { color: var(--texto-suave); }
.ppc .marca-img { border: 1px solid #3a3208; max-width: 620px; }
.pilares { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.pilares li { padding: 14px 10px; border: 1px solid #5c4d0a; border-radius: 4px; color: #f7d64a; font-weight: 600; font-size: 16px; text-align: center; }
@media (max-width: 1100px) {
  .hero-marcas { flex-wrap: wrap; }
  .hero-marcas .tarjeta-marca { flex: 1 1 30%; }
}
@media (max-width: 640px) {
  .pilares { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
  .hero-marcas { flex-direction: column; flex-wrap: nowrap; }
  .hero-marcas .tarjeta-marca { flex: none; width: 100%; aspect-ratio: 2 / 1; }
}

/* Registro cerrado */
.cerrado { gap: 10px; }
.cerrado h3 { margin: 0; font-family: var(--display); font-size: 26px; color: var(--tinta); }
.cerrado p { color: var(--tinta-suave); font-size: 18px; }
[hidden] { display: none !important; }

/* Portada de eventos */
.portada { padding: 96px 0; min-height: 60vh; }
.portada h1 { font-family: var(--display); font-weight: 900; font-size: clamp(48px, 6vw, 80px); margin: 12px 0 32px; }
.portada-lista { display: grid; gap: 16px; max-width: 760px; }
.portada-lista a { display: flex; flex-direction: column; gap: 6px; padding: 24px; border: 1px solid #3a3d42; border-radius: 6px; color: var(--texto); text-decoration: none; }
.portada-lista a:hover { border-color: var(--oro); }
.portada-lista strong { font-family: var(--display); font-size: 26px; }
.portada-lista span { color: var(--texto-suave); }