/* Web publica de Zontra (zontra.app): portada y guias. Mismo sistema visual
   que la app ("A · Clara"): azul de marca, Inter, tarjetas blancas. */
:root {
  --azul: #2563eb;
  --azul-osc: #1e3a8a;
  --azul-claro: #eff6ff;
  --azul-suave: #dbeafe;
  --texto: #0f172a;
  --texto-2: #334155;
  --gris: #475569;
  --gris-2: #64748b;
  --borde: #e2e8f0;
  --fondo: #f8fafc;
  --naranja-fondo: #fff7ed;
  --naranja-borde: #fdba74;
  --naranja-texto: #7c2d12;
  --ancho: 1200px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  color: var(--texto);
  background: #fff;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--azul); text-decoration: none; }
a:hover { color: var(--azul-osc); }
img { max-width: 100%; }
:focus-visible { outline: 3px solid rgba(37, 99, 235, 0.4); outline-offset: 3px; border-radius: 6px; }

.contenedor { width: 100%; max-width: var(--ancho); margin: 0 auto; padding: 0 24px; }

/* ---- Cabecera ---- */
.cab { position: sticky; top: 0; z-index: 10; background: rgba(255, 255, 255, 0.92); backdrop-filter: blur(8px); border-bottom: 1px solid transparent; }
.cab .contenedor { display: flex; align-items: center; gap: 32px; height: 72px; }
.marca { display: flex; align-items: center; gap: 10px; font-size: 21px; font-weight: 800; letter-spacing: -0.02em; color: var(--azul-osc); }
.marca img { width: 32px; height: 32px; border-radius: 8px; }
.cab nav { display: flex; gap: 26px; font-size: 15px; font-weight: 600; }
.cab nav a { color: var(--texto-2); }
.cab .acciones { margin-left: auto; display: flex; align-items: center; gap: 16px; }
.cab .entrar { font-size: 15px; font-weight: 700; color: var(--texto-2); }

/* ---- Botones ---- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 52px; padding: 0 26px; border-radius: 14px; background: var(--azul); color: #fff; font-size: 17px; font-weight: 700; border: 0; }
.btn:hover { background: var(--azul-osc); color: #fff; }
.btn.peq { min-height: 42px; padding: 0 18px; font-size: 15px; border-radius: 12px; }
.btn.sec { background: #fff; color: var(--azul-osc); border: 1.5px solid #cbd5e1; }
.btn.sec:hover { border-color: var(--azul); color: var(--azul-osc); }
.btn.blanco { background: #fff; color: var(--azul-osc); }
.btn.blanco:hover { background: var(--azul-claro); }

/* ---- Portada ---- */
.hero { background: linear-gradient(180deg, #fff 0%, var(--azul-claro) 100%); padding: 56px 0 80px; overflow: hidden; }
.hero .contenedor { display: grid; grid-template-columns: 1.05fr 1fr; gap: 48px; align-items: center; }
.etiqueta { display: inline-block; font-size: 14px; font-weight: 700; color: var(--azul-osc); background: var(--azul-suave); border-radius: 999px; padding: 8px 14px; }
.hero h1 { margin: 22px 0 0; font-size: clamp(40px, 5vw, 68px); line-height: 1.02; font-weight: 900; letter-spacing: -0.04em; }
.hero h1 span { color: var(--azul); }
.hero h1 .l1 { color: inherit; display: block; text-wrap: balance; }
@media (min-width: 561px) { .hero h1 .l1 { white-space: nowrap; } }
.hero .sub { margin: 22px 0 0; font-size: 20px; line-height: 1.5; color: var(--gris); max-width: 560px; }
.hero .botones { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 30px; }
.checks { display: flex; flex-wrap: wrap; gap: 10px 22px; margin: 24px 0 0; padding: 0; list-style: none; font-size: 15px; font-weight: 600; color: var(--gris); }
.checks li { display: flex; align-items: center; gap: 6px; }
.checks svg { color: var(--azul); flex-shrink: 0; }
.moviles { position: relative; height: 620px; }
.movil { position: absolute; border-radius: 40px; background: var(--texto); padding: 12px; box-shadow: 0 30px 60px rgba(15, 23, 42, 0.25); }
.movil .pantalla { border-radius: 30px; background: var(--fondo); overflow: hidden; }
.movil.uno { left: 0; top: 0; width: 300px; }
.movil.dos { right: 0; top: 150px; width: 270px; }
.m-cab { display: flex; align-items: center; justify-content: space-between; padding: 16px 16px 10px; background: #fff; border-bottom: 1px solid var(--borde); }
.m-cab b { color: var(--azul-osc); font-size: 14px; display: flex; align-items: center; gap: 6px; }
.m-cab b img { width: 20px; height: 20px; }
.m-av { width: 26px; height: 26px; border-radius: 50%; background: var(--azul-suave); color: var(--azul-osc); font-size: 11px; font-weight: 700; display: flex; align-items: center; justify-content: center; }
.m-cuerpo { padding: 14px; display: flex; flex-direction: column; gap: 10px; }
.m-hola { font-size: 17px; font-weight: 800; }
.m-tarjeta { background: #fff; border: 1px solid var(--borde); border-radius: 14px; padding: 12px; display: flex; flex-direction: column; gap: 8px; }
.m-eti { font-size: 9px; font-weight: 700; letter-spacing: 0.06em; color: var(--gris-2); }
.m-tipo { font-size: 20px; font-weight: 800; color: var(--azul-osc); }
.m-tiles { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.m-tile { border: 1px solid var(--borde); border-radius: 12px; padding: 10px; }
.m-tile span { display: block; font-size: 10px; font-weight: 600; color: var(--gris-2); }
.m-tile b { display: block; font-size: 18px; font-weight: 800; margin-top: 2px; }
.m-tile i { display: flex; gap: 2px; margin-top: 6px; }
.m-tile i::before { content: ""; flex: 5; height: 4px; border-radius: 2px; background: var(--azul); }
.m-tile i::after { content: ""; flex: 3; height: 4px; border-radius: 2px; background: var(--borde); }
.m-tile.ambar i::before { background: #f59e0b; flex: 3; }
.m-tile.ambar i::after { flex: 5; }
.m-sig { font-size: 13px; font-weight: 700; }
.m-enl { font-size: 11px; font-weight: 700; color: var(--azul); }
.m-semana { background: #fff; padding: 16px; }
.m-semana h3 { margin: 0 0 6px; font-size: 16px; font-weight: 800; }
.m-dia { display: flex; align-items: center; gap: 10px; padding: 9px 0; border-bottom: 1px solid #f1f5f9; }
.m-dia > b { width: 34px; font-size: 10px; color: var(--gris-2); }
.m-dia div { flex: 1; }
.m-dia strong { display: block; font-size: 12px; }
.m-dia small { font-size: 10px; color: var(--gris-2); }
.m-dia svg { color: var(--azul); }
.m-nota { margin-top: 12px; background: var(--azul-claro); border-radius: 10px; padding: 10px; font-size: 11px; color: var(--azul-osc); font-weight: 600; }

/* ---- Secciones ---- */
.seccion { padding: 88px 0; }
.seccion.gris { background: var(--fondo); }
.titulo-sec { text-align: center; display: flex; flex-direction: column; align-items: center; gap: 12px; margin-bottom: 48px; }
.titulo-sec.izq { text-align: left; align-items: flex-start; margin-bottom: 0; }
.antetitulo { font-size: 14px; font-weight: 800; letter-spacing: 0.1em; text-transform: uppercase; color: var(--azul); }
.titulo-sec h2 { margin: 0; font-size: clamp(32px, 4vw, 44px); line-height: 1.12; font-weight: 800; letter-spacing: -0.025em; max-width: 820px; }
.titulo-sec p { margin: 0; font-size: 19px; line-height: 1.5; color: var(--gris); max-width: 720px; }

.cita { margin: 0; display: flex; flex-direction: column; align-items: center; gap: 18px; text-align: center; }
.cita blockquote { margin: 0; font-size: clamp(24px, 3vw, 34px); line-height: 1.3; font-weight: 700; letter-spacing: -0.02em; color: var(--azul-osc); max-width: 900px; }
.cita blockquote span { background: var(--azul-suave); padding: 0 6px; border-radius: 6px; }
.cita figcaption { font-size: 16px; color: var(--gris); font-weight: 600; }

.pasos { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 32px; margin: 0; padding: 0; list-style: none; }
.pasos li { display: flex; flex-direction: column; gap: 10px; }
.pasos .num { width: 44px; height: 44px; border-radius: 50%; background: var(--azul); color: #fff; font-weight: 800; font-size: 18px; display: flex; align-items: center; justify-content: center; }
.pasos h3 { margin: 0; font-size: 20px; font-weight: 800; }
.pasos p { margin: 0; font-size: 16px; line-height: 1.5; color: var(--gris); }

.ventajas { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.ventaja { background: #fff; border: 1px solid var(--borde); border-radius: 20px; padding: 28px; display: flex; flex-direction: column; gap: 12px; }
.ventaja .ic { width: 52px; height: 52px; border-radius: 14px; background: var(--azul-claro); color: var(--azul); display: flex; align-items: center; justify-content: center; }
.ventaja h3 { margin: 0; font-size: 20px; font-weight: 800; }
.ventaja p { margin: 0; font-size: 16px; line-height: 1.55; color: var(--gris); }

.dos-col { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.aviso-ftp { background: var(--naranja-fondo); border: 1.5px solid var(--naranja-borde); border-radius: 22px; padding: 28px; display: flex; flex-direction: column; gap: 12px; }
.aviso-ftp strong { font-size: 21px; color: #9a3412; }
.aviso-ftp p { margin: 0; font-size: 16px; line-height: 1.5; color: var(--naranja-texto); }
.aviso-ftp span { align-self: flex-start; min-height: 46px; padding: 0 20px; border-radius: 12px; background: var(--azul); color: #fff; font-weight: 700; display: inline-flex; align-items: center; }

.cadena { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 12px; font-size: 16px; font-weight: 700; color: var(--gris); margin-bottom: 24px; }
.dispositivos { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; margin: 0; padding: 0; list-style: none; }
.dispositivos li { min-height: 52px; padding: 0 26px; border-radius: 999px; border: 1.5px solid var(--borde); background: #fff; display: inline-flex; align-items: center; font-size: 18px; font-weight: 800; color: var(--texto-2); }
.dispositivos li.mas { border: 0; background: none; color: var(--gris-2); font-weight: 700; font-size: 17px; }
.nota-sec { text-align: center; margin: 22px auto 0; max-width: 640px; font-size: 15px; line-height: 1.5; color: var(--gris); }

.guias { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.guia { display: flex; flex-direction: column; gap: 12px; padding: 28px; border-radius: 20px; background: #fff; border: 1px solid var(--borde); color: var(--texto); }
.guia:hover { border-color: var(--azul); color: var(--texto); }
.guia .ic { color: var(--azul); }
.guia h3 { margin: 0; font-size: 21px; font-weight: 800; }
.guia p { margin: 0; font-size: 16px; line-height: 1.5; color: var(--gris); }
.guias.destacadas { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.carrera-dest h3 { margin: 0; }
.leer-mod { font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: .04em; color: var(--azul-osc); }
.siguiente.centro { justify-content: center; }
.guia .leer { margin-top: auto; font-size: 15px; font-weight: 700; color: var(--azul); }

.preguntas { max-width: 860px; margin: 0 auto; }
.preguntas details { border-bottom: 1px solid var(--borde); padding: 20px 0; }
.preguntas summary { cursor: pointer; font-size: 19px; font-weight: 800; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
.preguntas summary::-webkit-details-marker { display: none; }
.preguntas summary::after { content: "+"; color: var(--azul); font-size: 24px; line-height: 1; }
.preguntas details[open] summary::after { content: "–"; }
.preguntas details p { margin: 10px 0 0; font-size: 16px; line-height: 1.55; color: var(--gris); }

.cta-final { margin: 0 24px 64px; border-radius: 32px; background: linear-gradient(135deg, var(--azul-osc), var(--azul)); padding: 64px; display: flex; align-items: center; justify-content: space-between; gap: 32px; max-width: calc(var(--ancho) - 48px); margin-left: auto; margin-right: auto; }
.cta-final h2 { margin: 0; font-size: clamp(30px, 4vw, 44px); font-weight: 800; letter-spacing: -0.025em; color: #fff; }
.cta-final p { margin: 12px 0 0; font-size: 19px; color: var(--azul-suave); }

.pie { border-top: 1px solid var(--borde); padding: 28px 0; font-size: 14px; color: var(--gris-2); }
.pie .contenedor { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 24px; }
.pie .marca { font-size: 16px; }
.pie .marca img { width: 22px; height: 22px; }
.pie nav { margin-left: auto; display: flex; gap: 20px; }
.pie nav a { color: var(--gris-2); }

/* ---- Guias ---- */
.articulo { padding: 48px 0 80px; }
.articulo .contenedor { max-width: 780px; }
.migas { font-size: 14px; font-weight: 600; color: var(--gris-2); }
.articulo h1 { margin: 14px 0 0; font-size: clamp(34px, 5vw, 48px); line-height: 1.1; font-weight: 900; letter-spacing: -0.03em; }
.articulo .entradilla { margin: 16px 0 0; font-size: 20px; line-height: 1.5; color: var(--gris); }
.articulo h2 { margin: 44px 0 0; font-size: 28px; font-weight: 800; letter-spacing: -0.02em; }
.articulo h3 { margin: 28px 0 0; font-size: 20px; font-weight: 800; }
.articulo p, .articulo li { font-size: 17px; line-height: 1.65; color: var(--texto-2); }
.articulo p { margin: 12px 0 0; }
.articulo ol, .articulo ul { margin: 12px 0 0; padding-left: 24px; }
.articulo li { margin-top: 6px; }
.caja { margin-top: 20px; border-radius: 16px; padding: 18px 20px; background: var(--azul-claro); color: var(--azul-osc); font-size: 16px; line-height: 1.55; }
.caja.aviso { background: var(--naranja-fondo); color: var(--naranja-texto); }
.tabla-test { width: 100%; margin-top: 16px; border-collapse: collapse; font-size: 16px; }
.tabla-test th, .tabla-test td { text-align: left; padding: 12px 10px; border-bottom: 1px solid var(--borde); vertical-align: top; }
.tabla-test th { font-size: 13px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--gris-2); }
.tabla-test td:first-child { font-weight: 700; white-space: nowrap; }
.tabla-test tr.fuerte td { background: var(--azul-claro); }
.formula { margin-top: 16px; padding: 22px; border-radius: 16px; border: 1.5px solid var(--azul-suave); text-align: center; font-size: 22px; font-weight: 800; color: var(--azul-osc); }
.formula small { display: block; margin-top: 6px; font-size: 15px; font-weight: 600; color: var(--gris); }
.siguiente { margin-top: 48px; display: flex; flex-wrap: wrap; gap: 14px; }

/* ---- Biblioteca de carreras (/carreras) ---- */
.biblioteca .contenedor { max-width: 1000px; }
.biblioteca .siguiente { margin-top: 24px; }
.filtros { margin-top: 28px; display: flex; flex-direction: column; gap: 12px; }
.filtros input, .filtros select { font: inherit; font-size: 16px; min-height: 48px; padding: 0 14px; border: 1.5px solid #cbd5e1; border-radius: 12px; background: #fff; color: var(--texto); }
.filtros input { width: 100%; }
.buscar-caja { position: relative; }
.buscar-caja input { padding-right: 48px; }
.buscar-caja input::-webkit-search-cancel-button { -webkit-appearance: none; appearance: none; }
.limpiar { position: absolute; right: 4px; top: 50%; transform: translateY(-50%); width: 40px; height: 40px; border: 0; border-radius: 50%; background: transparent; color: var(--gris, #64748b); font-size: 26px; line-height: 1; cursor: pointer; }
.limpiar:hover { background: #f1f5f9; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { font: inherit; font-size: 15px; font-weight: 700; min-height: 40px; padding: 0 16px; border-radius: 999px; border: 1.5px solid #cbd5e1; background: #fff; color: var(--texto-2); cursor: pointer; }
.chip.on { background: var(--azul-osc); border-color: var(--azul-osc); color: #fff; }
.selects { display: flex; flex-wrap: wrap; gap: 8px; }
.selects select { flex: 1 1 200px; }
.biblioteca p.cuenta { margin-top: 18px; font-size: 14px; font-weight: 700; color: var(--gris-2); }
.carreras { margin-top: 12px; display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 14px; }
.carrera { display: flex; flex-direction: column; gap: 4px; padding: 18px; border: 1px solid var(--borde); border-radius: 16px; background: #fff; color: var(--texto); }
.carrera:hover { border-color: var(--azul); color: var(--texto); box-shadow: 0 6px 20px rgba(15, 23, 42, 0.06); }
.carrera[hidden] { display: none; }
.carrera strong { font-size: 18px; line-height: 1.3; margin-top: 6px; }
.carrera .donde, .carrera .datos { font-size: 14px; color: var(--gris); }
.carrera .cuando { font-size: 15px; font-weight: 700; color: var(--azul-osc); }
.carrera .mod { align-self: flex-start; font-size: 12px; font-weight: 800; letter-spacing: .04em; text-transform: uppercase; color: var(--azul-osc); background: var(--azul-suave); border-radius: 999px; padding: 4px 10px; }
.carrera .mod.gravel { background: #fef3c7; color: #92400e; }
.carrera .mod.mtb { background: #dcfce7; color: #166534; }
.carrera .mod.xco { background: #fce7f3; color: #9d174d; }
.carrera .sin { align-self: flex-start; font-size: 12px; font-weight: 700; color: var(--naranja-texto); }
.nota-fuentes { font-size: 14px !important; color: var(--gris-2) !important; }
.recorrido { margin-top: 28px; padding: 20px; border: 1px solid var(--borde); border-radius: 16px; }
.recorrido h3 { margin: 0 !important; }
.cifras { margin-top: 12px; display: flex; flex-wrap: wrap; gap: 12px 32px; }
.cifras small { display: block; font-size: 13px; color: var(--gris-2); }
.cifras b { font-size: 24px; font-weight: 800; }
table.puertos { margin-top: 16px; width: 100%; border-collapse: collapse; font-size: 15px; }
table.puertos th { text-align: left; font-size: 12px; text-transform: uppercase; letter-spacing: .04em; color: var(--gris-2); padding: 6px 8px; border-bottom: 1px solid var(--borde); }
table.puertos td { padding: 8px; border-bottom: 1px solid #f1f5f9; color: var(--texto-2); }
table.puertos .n { text-align: right; white-space: nowrap; }
table.puertos .barra { width: 30%; }
table.puertos .barra span { display: block; height: 8px; border-radius: 4px; background: var(--azul); }
svg.perfil { display: block; width: 100%; height: auto; margin-top: 16px; }
svg.perfil .area { fill: var(--azul-suave); }
svg.perfil .linea { fill: none; stroke: var(--azul); stroke-width: 2; stroke-linejoin: round; }
svg.perfil .rej { stroke: #e2e8f0; stroke-width: 1; }
svg.perfil text { font-size: 13px; fill: var(--gris-2); font-family: inherit; }
.recorrido h4 { margin: 20px 0 0; font-size: 15px; font-weight: 700; color: var(--texto-2); }
.oculto { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
@media (max-width: 560px) { table.puertos .barra { display: none; } .cifras b { font-size: 20px; } svg.perfil text { font-size: 26px; } }

/* ---- Movil ---- */
@media (max-width: 960px) {
  .hero .contenedor, .dos-col { grid-template-columns: 1fr; }
  .moviles { height: 560px; max-width: 480px; margin: 0 auto; width: 100%; }
  .pasos { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ventajas, .guias { grid-template-columns: 1fr; }
  .cta-final { flex-direction: column; align-items: flex-start; padding: 40px 28px; }
  .cab nav { display: none; }
}
@media (max-width: 440px) {
  /* Con "Carreras", "Entrar" y el boton no cabe el nombre: queda el icono. */
  .cab .marca { font-size: 0; gap: 0; }
  .cab .contenedor { gap: 12px; }
  .cab .acciones { gap: 12px; }
  .cab .entrar { font-size: 14px; }
  .guias.destacadas { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 560px) {
  .seccion { padding: 64px 0; }
  .hero { padding: 32px 0 56px; }
  .moviles { height: 560px; }
  .movil.uno { width: 250px; }
  .movil.dos { width: 220px; top: 140px; }
  .pasos { grid-template-columns: 1fr; }
  .cab .acciones { gap: 12px; }
  .cab .entrar { font-size: 14px; }
  .cab .btn.peq { padding: 0 12px; font-size: 14px; }
  .cab .btn.peq { white-space: nowrap; }
  .solo-ancho { display: none; }
  .cab .contenedor { gap: 12px; }
  .pie nav { margin-left: 0; }
}