/* Troppero · landing
   Paleta del manual de marca (Figma, página 34): terracota, trigo, tinta y hueso.
   Composición inspirada en heytruffle.ai: serif fina, fondo difuminado con grano,
   todo centrado y el producto en un panel oscuro. */

:root {
  --terracota: #b85c2e;
  --terracota-claro: #d27a4c;
  --tostado: #7a3a1c;
  --trigo: #ecc46a;
  --salvia: #8a9a6b;
  --tinta: #131b16;
  --noche: #17130f;
  --panel: #221d19;
  --hueso: #f4f1e9;
  --papel: #fbfaf6;
  --suave: color-mix(in srgb, var(--hueso) 68%, transparent);
  --linea: color-mix(in srgb, var(--hueso) 12%, transparent);

  --serif: "Gowun Batang", ui-serif, Georgia, serif;
  --texto: "Inter", system-ui, -apple-system, sans-serif;
  --cifra: "Barlow Condensed", "Arial Narrow", sans-serif;

  --ancho: 1160px;
  --curva: cubic-bezier(.2, .7, .2, 1);
  --grano: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.55'/%3E%3C/svg%3E");
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--noche);
  color: var(--hueso);
  font-family: var(--texto);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; }
button { font: inherit; }

h1, h2, h3 {
  font-family: var(--serif);
  font-weight: 400;
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0;
  text-wrap: balance;
}
h1 em, h2 em { font-style: normal; color: var(--trigo); }

/* Botones */
.boton {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 52px;
  padding: 0 26px;
  border: 0;
  border-radius: 999px;
  background: var(--terracota);
  color: #fff;
  font-weight: 500;
  font-size: 1rem;
  text-decoration: none;
  cursor: pointer;
  transition: background .2s var(--curva), transform .2s var(--curva);
}
.boton:hover { background: var(--terracota-claro); }
.boton:active { transform: scale(.98); }
.boton:focus-visible, .pestana:focus-visible, summary:focus-visible, .barra__enlace:focus-visible {
  outline: 2px solid var(--trigo);
  outline-offset: 3px;
}
.boton--vidrio {
  background: color-mix(in srgb, var(--hueso) 14%, transparent);
  border: 1px solid color-mix(in srgb, var(--hueso) 35%, transparent);
  backdrop-filter: blur(8px);
}
.boton--vidrio:hover { background: color-mix(in srgb, var(--hueso) 22%, transparent); }
.boton--chico { min-height: 38px; padding: 0 18px; font-size: .9rem; }
.icono { width: 20px; height: 20px; }

/* Barra */
.barra {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px max(20px, (100% - var(--ancho)) / 2);
  background: linear-gradient(180deg, color-mix(in srgb, var(--noche) 70%, transparent), transparent);
  backdrop-filter: blur(6px);
}
.barra__logo { height: 22px; width: auto; }
.barra__nav { display: flex; align-items: center; gap: 28px; }
.barra__enlace {
  background: none;
  border: 0;
  padding: 0;
  color: var(--hueso);
  font-size: .92rem;
  cursor: pointer;
  opacity: .85;
}
.barra__enlace:hover { opacity: 1; }

/* Portada */
.portada {
  position: relative;
  min-height: 86svh;
  display: grid;
  place-items: center;
  padding: 140px 20px 200px;
  overflow: hidden;
  text-align: center;
}
.portada__fondo {
  position: absolute;
  inset: -10%;
  background:
    radial-gradient(38% 46% at 18% 30%, #c97e5b 0%, transparent 70%),
    radial-gradient(34% 40% at 82% 26%, #8a9a6b 0%, transparent 72%),
    radial-gradient(44% 50% at 70% 78%, #ecc46a 0%, transparent 70%),
    radial-gradient(40% 46% at 26% 82%, #7a3a1c 0%, transparent 72%),
    radial-gradient(60% 60% at 50% 50%, #b85c2e 0%, #2a1f18 100%);
  filter: blur(40px) saturate(1.05);
  animation: respirar 24s ease-in-out infinite alternate;
}
.portada::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: var(--grano);
  mix-blend-mode: overlay;
  opacity: .5;
  pointer-events: none;
}
@keyframes respirar {
  from { transform: scale(1) translate(0, 0); }
  to { transform: scale(1.08) translate(-2%, 1.5%); }
}
.portada__texto { position: relative; z-index: 1; max-width: 760px; }
.portada h1 {
  font-size: clamp(2.7rem, 6.4vw, 4.6rem);
  font-weight: 700;
  color: var(--papel);
  text-shadow: 0 2px 30px color-mix(in srgb, var(--tostado) 35%, transparent);
}
.portada__bajada {
  max-width: 580px;
  margin: 22px auto 34px;
  font-size: clamp(1.02rem, 1.5vw, 1.18rem);
  font-weight: 400;
  color: color-mix(in srgb, var(--papel) 88%, transparent);
}
.portada__acciones { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; }
.barra__enlace { text-decoration: none; }
.portada__nota {
  display: inline-block;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
  margin: 22px 0 0;
  font-size: .88rem;
  color: color-mix(in srgb, var(--papel) 75%, transparent);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-color: color-mix(in srgb, var(--papel) 40%, transparent);
}

/* Panel con el producto */
.panel {
  position: relative;
  z-index: 2;
  width: min(var(--ancho), 100% - 32px);
  margin: -150px auto 0;
  padding: 36px 36px 22px;
  border-radius: 32px;
  background: var(--panel);
  box-shadow: 0 30px 80px rgba(0, 0, 0, .35);
}
.panel__pestanas {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  max-width: 860px;
  margin: 0 auto 28px;
}
.pestana {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  border-radius: 18px;
  border: 1px solid var(--linea);
  background: transparent;
  color: var(--hueso);
  text-align: left;
  cursor: pointer;
  transition: border-color .2s var(--curva), background .2s var(--curva);
}
.pestana b { display: block; font-weight: 500; font-size: .92rem; }
.pestana small { display: block; font-size: .78rem; color: var(--suave); }
.pestana__punto {
  flex: none;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, var(--trigo), var(--terracota) 70%);
  opacity: .55;
}
.pestana:hover { border-color: color-mix(in srgb, var(--hueso) 28%, transparent); }
.pestana[aria-selected="true"] {
  border-color: color-mix(in srgb, var(--trigo) 70%, transparent);
  background: color-mix(in srgb, var(--trigo) 8%, transparent);
}
.pestana[aria-selected="true"] .pestana__punto { opacity: 1; }

.escena {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 22px;
  padding: 30px 28px 34px;
  border-radius: 20px;
  overflow: hidden;
  background: #2c241e;
}
.escena[hidden] { display: none; }
.escena__fondo { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; filter: saturate(.8); }
.escena__frase {
  position: relative;
  z-index: 1;
  max-width: 640px;
  margin: 0;
  text-align: center;
  font-size: 1.05rem;
  color: var(--papel);
  text-shadow: 0 1px 12px rgba(0, 0, 0, .5);
}
.escena__equipos {
  position: absolute;
  inset: 0;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  padding: 26px 0;
}
.telefono {
  height: 100%;
  aspect-ratio: 390 / 844;
  border: 7px solid #0f0d0b;
  border-radius: 40px;
  overflow: hidden;
  background: #0f0d0b;
  box-shadow: 0 24px 60px rgba(0, 0, 0, .45);
  animation: entrar .6s var(--curva);
}
.telefono img { width: 100%; height: 100%; object-fit: cover; }
.telefono--bajo { transform: translateY(26px); }
.compu {
  position: relative;
  z-index: 1;
  width: min(880px, 100%);
  border: 10px solid #0f0d0b;
  border-bottom-width: 14px;
  border-radius: 16px;
  overflow: hidden;
  background: #0f0d0b;
  box-shadow: 0 24px 60px rgba(0, 0, 0, .45);
  animation: entrar .6s var(--curva);
}
.compu__pantalla { aspect-ratio: 1440 / 900; overflow: hidden; border-radius: 4px; background: var(--hueso); }
.compu__pantalla img { width: 100%; height: auto; }
/* Las pantallas más largas que la ventana bajan despacio y vuelven. */
.compu__pantalla img.desliza { animation: deslizar 16s ease-in-out infinite; }
@keyframes deslizar {
  0%, 18% { transform: translateY(0); }
  48%, 70% { transform: translateY(var(--fin)); }
  100% { transform: translateY(0); }
}
@keyframes entrar { from { opacity: 0; transform: translateY(14px); } }
.escena::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(23, 19, 15, .6);
}
.panel__aclaracion { margin: 14px 0 0; text-align: center; font-size: .78rem; color: var(--suave); }

/* Secciones */
.seccion__cabeza { max-width: 720px; margin: 0 auto 72px; text-align: center; padding: 0 20px; }
.seccion__cabeza h2 { font-size: clamp(2.1rem, 4.6vw, 3.3rem); }
.seccion__cabeza p { margin: 18px auto 0; max-width: 560px; color: var(--suave); font-size: 1.08rem; }

.funciona { padding: 140px 0 60px; }
.fila {
  display: grid;
  grid-template-columns: .82fr 1.3fr;
  align-items: center;
  gap: 72px;
  width: min(var(--ancho), 100% - 40px);
  margin: 0 auto 120px;
}
.fila--invertida { grid-template-columns: 1.3fr .82fr; }
.fila--invertida .fila__texto { order: 2; }
.antes { display: grid; gap: 14px; margin: 22px 0 26px; }
.antes div { padding-left: 16px; border-left: 3px solid var(--linea); }
.antes div + div { border-left-color: var(--terracota-claro); }
.antes dt { font-size: .78rem; font-weight: 600; letter-spacing: .02em; color: var(--suave); }
.antes div + div dt { color: var(--trigo); }
.antes dd { margin: 4px 0 0; font-size: 1.04rem; color: color-mix(in srgb, var(--hueso) 92%, transparent); }
.fila__numero { margin: 0 0 18px; font-size: .9rem; color: var(--suave); }
.fila__numero span { color: var(--trigo); margin-right: 12px; font-weight: 600; }
.fila h3 { font-size: clamp(1.9rem, 3.4vw, 2.6rem); }
.fila__bajada { margin: 18px 0 26px; font-size: 1.1rem; color: color-mix(in srgb, var(--hueso) 88%, transparent); }
.puntos { list-style: none; margin: 0; padding: 0; }
.puntos li { position: relative; padding: 0 0 12px 22px; color: var(--suave); }
.puntos li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--terracota-claro);
}
.fila__imagen { position: relative; margin: 0; }
.fila__imagen .compu { width: 100%; animation: none; }
.fila--campo { grid-template-columns: .82fr 1fr; }
.fila__imagen--celu { margin-bottom: 40px; }
.fila__imagen--celu > img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: 24px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, .35);
}
.fila__imagen--celu .telefono {
  position: absolute;
  right: 8%;
  bottom: -40px;
  height: 108%;
  border-radius: 34px;
  border-width: 6px;
  animation: none;
}

/* Preguntas */
.preguntas {
  position: relative;
  padding: 130px 20px;
  background: var(--hueso);
  color: var(--tinta);
}
.preguntas .seccion__cabeza { margin-bottom: 48px; }
.preguntas h2 em { color: var(--terracota); }
.preguntas__lista { max-width: 760px; margin: 0 auto; }
details { border-top: 1px solid #ddd6c8; }
details:last-child { border-bottom: 1px solid #ddd6c8; }
summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 26px 4px;
  list-style: none;
  cursor: pointer;
  font-family: var(--serif);
  font-size: 1.35rem;
}
summary::-webkit-details-marker { display: none; }
summary::after {
  content: "+";
  flex: none;
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--terracota) 12%, transparent);
  color: var(--terracota);
  font-family: var(--texto);
  font-size: 1.2rem;
  transition: transform .3s var(--curva);
}
details[open] summary::after { transform: rotate(45deg); }
details p { margin: -6px 4px 26px; max-width: 620px; color: #4d4a44; }

/* Cierre */
.cierre {
  position: relative;
  min-height: 82svh;
  display: grid;
  place-items: start center;
  overflow: hidden;
  text-align: center;
}
.cierre__fondo { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: 60% 85%; }
.cierre { place-items: start stretch; text-align: left; }
.cierre__texto { position: relative; width: min(var(--ancho), 100% - 40px); margin: 0 auto; padding: 14vh 0 0; }
.cierre__texto h2, .cierre__texto p { max-width: 520px; }
.cierre h2 { font-size: clamp(2.3rem, 5vw, 3.8rem); font-weight: 700; color: var(--tinta); }
.cierre h2 em { color: var(--tostado); }
.cierre p { margin: 16px 0 30px; color: var(--tinta); font-size: 1.1rem; }

/* Pie */
.pie {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 32px;
  padding: 34px max(20px, (100% - var(--ancho)) / 2);
  background: var(--noche);
  color: var(--suave);
  font-size: .88rem;
}
.pie img { height: 20px; width: auto; margin-right: auto; }

/* Celular */
@media (max-width: 860px) {
  .barra__enlace:not([href]) { display: none; }
  .portada { min-height: 90svh; padding: 120px 20px 170px; }
  .panel { padding: 18px 14px 14px; border-radius: 24px; margin-top: -120px; }
  .panel__pestanas { grid-template-columns: repeat(2, 1fr); gap: 8px; margin-bottom: 16px; }
  .pestana { padding: 8px 10px; gap: 8px; }
  .pestana__punto { width: 18px; height: 18px; }

  .escena::after { background: linear-gradient(180deg, rgba(23,19,15,.05), rgba(23,19,15,.5)); }
  .escena__equipos { gap: 14px; padding: 18px 10px; }
  .escena .telefono { height: auto; width: 44%; border-width: 5px; border-radius: 24px; }
  .compu { width: 100%; border-width: 5px; border-bottom-width: 8px; border-radius: 10px; }
  .escena { padding: 18px 10px 22px; gap: 16px; }
  .escena__frase { font-size: .95rem; padding: 0 6px; }
  .fila--invertida, .fila--campo { grid-template-columns: 1fr; }
  .telefono--bajo { transform: translateY(14px); }
  .fila__imagen--celu .telefono { width: auto; height: 112%; right: 6%; border-radius: 22px; border-width: 4px; }
  .funciona { padding: 100px 0 20px; }
  .seccion__cabeza { margin-bottom: 48px; }
  .fila { grid-template-columns: 1fr; gap: 28px; margin-bottom: 80px; }
  .fila--invertida .fila__texto { order: 0; }
  .fila__imagen { order: -1; }
  .preguntas { padding: 90px 20px; }
  summary { font-size: 1.15rem; padding: 20px 2px; }
  .cierre { min-height: 74svh; }
  .cierre { background: #c97e5b; min-height: 640px; }
  .cierre__fondo { top: auto; height: 52%; object-position: 64% 100%; }
  .cierre { text-align: center; }
  .cierre__texto { padding-top: 10vh; }
  .cierre__texto h2, .cierre__texto p { margin-inline: auto; }
  .pie { flex-direction: column; align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}