/* =====================================================================
   STRATUS 3D · Base: reset, tipografía, marco, botones, cabecera, pie y carrito
   Solo usa tokens de tokens.css.
   ===================================================================== */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-padding-top: calc(var(--cabecera-h, var(--alto-cabecera)) + 12px); scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0; background: var(--suelo); color: var(--tinta);
  font-family: var(--fuente); font-size: var(--t-texto); line-height: var(--interlinea-texto);
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
  overflow-x: clip;
}
img, video, svg, picture { display: block; max-width: 100%; }
img, video { height: auto; }
h1, h2, h3, h4, p, ul, ol, dl, dd, figure { margin: 0; }
ul[role="list"], ol[role="list"] { list-style: none; padding: 0; }
a { color: inherit; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
[hidden] { display: none !important; }
:focus-visible { outline: 3px solid var(--foco); outline-offset: 3px; }
::selection { background: var(--acento); color: var(--sobre-acento); }
.sr-only { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.saltar { position: absolute; left: var(--margen); top: -100px; z-index: 100; background: var(--tinta); color: var(--suelo); padding: 12px 18px; border-radius: var(--radio-boton); }
.saltar:focus { top: 12px; }

/* ---------- Tipografía ---------- */
.display, .titulo, h1, h2 {
  font-weight: var(--peso-display); font-stretch: var(--ancho-display);
  letter-spacing: var(--tracking-display); line-height: var(--interlinea-display);
  text-wrap: balance;
}
.display { font-size: var(--t-display); }
.titulo, h2 { font-size: var(--t-titulo); }
h3, .sub { font-size: var(--t-sub); font-weight: 650; letter-spacing: -.015em; line-height: 1.2; text-wrap: balance; }
.lead { font-size: clamp(1.125rem, 1rem + .5vw, 1.375rem); line-height: 1.45; max-width: 36ch; }
.nota { font-size: var(--t-nota); color: var(--tinta-2); }
.precio { font-variant-numeric: tabular-nums; font-weight: 600; }
p { max-width: 62ch; }

/* ---------- Marco: un solo par de márgenes iguales ---------- */
.marco { width: 100%; max-width: var(--ancho-max); margin-inline: auto; padding-inline: var(--margen); }
.seccion { padding-block: var(--sec) 0; }
.seccion:last-child { padding-bottom: var(--sec); }
.cabeza-seccion { display: grid; gap: 20px; margin-bottom: clamp(2.5rem, 2rem + 2vw, 4rem); }
@media (min-width: 900px) { .cabeza-seccion { grid-template-columns: 1.2fr 1fr; align-items: end; gap: var(--gap); } }

/* ---------- Botones (sistema de marca v1.0, tokens en marca.css) ----------
   Tamaños: .boton (md 44 px) · .boton--sm (32 px) · .boton--lg (52 px)
   Variantes: --accion (naranja) · --tinta (grafito) · --claro (sobre fondo oscuro) · --suave (secundario)
              --contorno (sobre fondo oscuro) · --whatsapp
   Texto grafito sobre naranja y sobre verde WhatsApp: el blanco no llega a contraste AA (3.1:1 y 2:1). */
.boton {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--s3d-space-2);
  height: var(--s3d-btn-md); padding: 0 var(--s3d-btn-md-px); border: 0; border-radius: var(--s3d-radius);
  font: 600 var(--s3d-btn-md-fs)/1 var(--s3d-font-body); letter-spacing: 0; text-decoration: none; white-space: nowrap;
  background: var(--s3d-grafito); color: var(--s3d-blanco);
  transition: transform var(--d-press) var(--ease-out), background-color 150ms ease, color 150ms ease, box-shadow 150ms ease;
  -webkit-tap-highlight-color: transparent; touch-action: manipulation; user-select: none;
}
.boton:active { transform: scale(.97); }
.boton:focus-visible { outline: none; box-shadow: var(--s3d-focus); }
.boton svg { width: 20px; height: 20px; flex: none; }
.boton--sm { height: var(--s3d-btn-sm); padding: 0 var(--s3d-btn-sm-px); font-size: var(--s3d-btn-sm-fs); gap: 6px; }
.boton--sm svg { width: 16px; height: 16px; }
.boton--lg { height: var(--s3d-btn-lg); padding: 0 var(--s3d-btn-lg-px); font-size: var(--s3d-btn-lg-fs); }

.boton--accion   { background: var(--s3d-naranja);  color: var(--s3d-grafito); }
.boton--tinta    { background: var(--s3d-grafito);  color: var(--s3d-blanco); }
.boton--claro    { background: var(--s3d-blanco);   color: var(--s3d-grafito); }
.boton--suave    { background: var(--s3d-niebla);   color: var(--s3d-grafito); box-shadow: inset 0 0 0 1px var(--s3d-aluminio); }
.boton--whatsapp { background: var(--s3d-whatsapp); color: var(--s3d-grafito); }
.boton--contorno { background: transparent; color: var(--s3d-blanco); box-shadow: inset 0 0 0 2px rgba(255,255,255,.6); }
@media (hover: hover) and (pointer: fine) {
  .boton--accion:hover   { background: var(--s3d-naranja-hover); }
  .boton--tinta:hover    { background: var(--s3d-grafito-hover); }
  .boton--claro:hover    { background: var(--s3d-niebla); }
  .boton--suave:hover    { background: var(--s3d-aluminio); }
  .boton--whatsapp:hover { background: var(--s3d-whatsapp-hover); }
  .boton--contorno:hover { box-shadow: inset 0 0 0 2px var(--s3d-blanco); }
}
.boton--accion:active   { background: var(--s3d-naranja-press); }
.boton--tinta:active    { background: var(--s3d-grafito-press); }
.boton--claro:active    { background: var(--s3d-aluminio); }
.boton--suave:active    { background: var(--s3d-aluminio); }
.boton--whatsapp:active { background: var(--s3d-whatsapp-press); }
.boton--suave:focus-visible, .boton--contorno:focus-visible { box-shadow: var(--s3d-focus); }
.boton:disabled, .boton[aria-disabled="true"] { background: var(--s3d-aluminio) !important; color: var(--s3d-acero) !important; box-shadow: none; cursor: not-allowed; opacity: 1 !important; transform: none; }
.boton--bloque { width: 100%; white-space: normal; text-align: center; height: auto; min-height: var(--s3d-btn-md); padding-block: 12px; line-height: 1.25; }
.boton--bloque.boton--lg { min-height: var(--s3d-btn-lg); }
.enlace { font-weight: 600; text-decoration: underline; text-decoration-thickness: 2px; text-underline-offset: 5px; text-decoration-color: color-mix(in srgb, currentColor 35%, transparent); transition: text-decoration-color var(--d-ui) ease; }
@media (hover: hover) and (pointer: fine) { .enlace:hover { text-decoration-color: currentColor; } }

/* ---------- Cabecera ---------- */
.cabecera { position: sticky; top: 0; z-index: 40; background: var(--suelo); }
body::before { content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px); background: var(--suelo); z-index: 41; }
.cabecera .marco { display: grid; grid-template-columns: 1fr auto; grid-template-areas: "marca acciones" "nav nav"; align-items: center; column-gap: 16px; min-height: var(--alto-cabecera); }
.marca { grid-area: marca; display: block; justify-self: start; }
.marca img { height: 26px; width: auto; }
.cabecera-acciones { grid-area: acciones; justify-self: end; display: flex; align-items: center; gap: 8px; }
/* Barra central de pestañas: siempre visible; en pantallas angostas se desliza en horizontal */
.nav { grid-area: nav; min-width: 0; overflow-x: auto; scrollbar-width: none; margin-inline: calc(var(--margen) * -1); padding: 0 var(--margen) 10px; scroll-padding-inline: var(--margen); }
.nav::-webkit-scrollbar { display: none; }
.nav ul { display: flex; gap: 2px; width: max-content; margin-inline: auto; padding: 4px; background: var(--superficie); border-radius: var(--radio-boton); }
.nav a { display: block; text-decoration: none; font-size: .875rem; font-weight: 550; color: var(--tinta-2); padding: 8px 13px; border-radius: var(--radio-boton); white-space: nowrap; transition: background-color var(--d-ui) ease, color var(--d-ui) ease; -webkit-tap-highlight-color: transparent; }
.nav a[aria-current] { background: var(--tinta); color: var(--suelo); }
@media (hover: hover) and (pointer: fine) { .nav a:not([aria-current]):hover { color: var(--tinta); background: var(--superficie-2); } }
@media (min-width: 1240px) {
  .cabecera .marco { grid-template-columns: 1fr auto 1fr; grid-template-areas: "marca nav acciones"; }
  .nav { margin: 0; padding: 0; overflow: visible; }
}
.boton-icono {
  position: relative; display: inline-grid; place-items: center; width: 44px; height: 44px; border-radius: 50%;
  border: 0; background: transparent; transition: background-color var(--d-ui) ease, transform var(--d-press) var(--ease-out);
}
.boton-icono:active { transform: scale(.94); }
@media (hover: hover) and (pointer: fine) { .boton-icono:hover { background: var(--superficie); } }
.boton-icono svg { width: 24px; height: 24px; }
.contador {
  position: absolute; top: 2px; right: 0; min-width: 20px; height: 20px; padding: 0 5px; border-radius: 999px;
  background: var(--acento); color: var(--sobre-acento); font-size: 12px; font-weight: 700; line-height: 20px; text-align: center;
  font-variant-numeric: tabular-nums; transition: transform 200ms var(--ease-out);
}
.contador[data-vacio="true"] { transform: scale(.5); opacity: 0; }
.contador.salto { animation: salto 360ms var(--ease-out); }
@keyframes salto { 0% { transform: scale(1); } 40% { transform: scale(1.35); } 100% { transform: scale(1); } }

/* ---------- Pie ---------- */
.pie { background: var(--campo); color: var(--sobre-campo); padding-block: clamp(4rem, 3rem + 5vw, 8rem) calc(32px + env(safe-area-inset-bottom, 0px)); margin-top: 0; }
.pie-rejilla { display: grid; gap: 40px; }
@media (min-width: 900px) { .pie-rejilla { grid-template-columns: 1.4fr 1fr 1fr; } }
.pie h2 { font-size: var(--t-titulo); max-width: 14ch; }
.pie ul { display: grid; gap: 10px; }
.pie a:not(.boton) { text-decoration: none; color: var(--sobre-campo); }
@media (hover: hover) and (pointer: fine) { .pie a:not(.boton):hover { text-decoration: underline; text-underline-offset: 4px; } }
.pie .nota { color: var(--sobre-campo-2); }
.pie-redes { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; }
.pie-marca { margin-top: clamp(4rem, 3rem + 6vw, 9rem); }
.pie-marca img { width: 100%; height: auto; }
.pie-legal { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; margin-top: 28px; }

/* ---------- Carrito (drawer lateral) ---------- */
.velo { position: fixed; inset: 0; z-index: 70; background: rgba(18,19,21,.42); opacity: 0; visibility: hidden; transition: opacity 260ms ease, visibility 0s 260ms; }
.velo[data-abierto="true"] { opacity: 1; visibility: visible; transition: opacity 300ms ease; }
.carrito {
  position: fixed; z-index: 80; top: 0; right: 0; bottom: 0; width: min(440px, 100%);
  background: var(--suelo); display: flex; flex-direction: column;
  padding-top: env(safe-area-inset-top, 0px); padding-bottom: env(safe-area-inset-bottom, 0px); padding-right: env(safe-area-inset-right, 0px);
  transform: translateX(100%); visibility: hidden;
  transition: transform 260ms var(--ease-out), visibility 0s 260ms;
  box-shadow: -24px 0 48px -24px rgba(0,0,0,.35);
}
.carrito[data-abierto="true"] { transform: none; visibility: visible; transition: transform var(--d-drawer) var(--ease-drawer); }
.carrito-cabeza { display: flex; justify-content: space-between; align-items: center; padding: 16px 20px 8px; }
.carrito-cabeza h2 { font-size: 1.75rem; }
.carrito-lista { flex: 1; overflow-y: auto; padding: 8px 20px; overscroll-behavior: contain; }
.item { display: grid; grid-template-columns: 76px minmax(0, 1fr) auto; gap: 14px; padding: 14px 0; }
.item + .item { box-shadow: 0 -1px 0 var(--superficie); }
.item img { width: 76px; height: 76px; object-fit: cover; background: var(--superficie); }
.item-nombre { font-weight: 600; line-height: 1.3; }
.item-detalle { font-size: var(--t-nota); color: var(--tinta-2); }
.item-total { text-align: right; font-weight: 600; font-variant-numeric: tabular-nums; }
.paso-cantidad { display: inline-flex; align-items: center; margin-top: 8px; background: var(--superficie); border-radius: var(--radio-boton); }
.paso-cantidad button { width: 40px; height: 40px; border: 0; background: transparent; border-radius: 50%; font-size: 1.25rem; line-height: 1; transition: transform var(--d-press) var(--ease-out); }
.paso-cantidad button:active { transform: scale(.9); }
.paso-cantidad input { width: 3.2ch; text-align: center; border: 0; background: transparent; font-weight: 600; font-variant-numeric: tabular-nums; -moz-appearance: textfield; appearance: textfield; padding: 0; }
.paso-cantidad input::-webkit-outer-spin-button, .paso-cantidad input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.quitar { border: 0; background: none; padding: 6px 0; margin-left: 12px; font-size: var(--t-nota); color: var(--tinta-2); text-decoration: underline; text-underline-offset: 3px; }
.carrito-pie { padding: 16px 20px 20px; background: var(--superficie); display: grid; gap: 12px; }
.fila-total { display: flex; justify-content: space-between; align-items: baseline; }
.fila-total strong { font-size: 1.5rem; font-variant-numeric: tabular-nums; }
.carrito-vacio { padding: 48px 0; text-align: left; display: grid; gap: 16px; justify-items: start; }
.campo-texto { width: 100%; min-height: 48px; padding: 10px 14px; border: 2px solid transparent; border-radius: 10px; background: var(--suelo); font-size: 1rem; transition: border-color var(--d-ui) ease; }
.campo-texto:focus { outline: none; border-color: var(--tinta); }
label.etiqueta { display: block; font-weight: 600; font-size: .9375rem; margin-bottom: 6px; }

/* ---------- Revelado por capas (movimiento firma) ----------
   La imagen aparece de abajo hacia arriba, como una pieza que se imprime.
   Solo se oculta si el script está activo (clase .js en <html>). */
.js .capa { clip-path: inset(100% 0 0 0); }
.js .capa.visible { clip-path: inset(0 0 0 0); transition: clip-path var(--d-revelar) var(--ease-out); }
.js .sube { opacity: 0; transform: translateY(24px); }
.js .sube.visible { opacity: 1; transform: none; transition: opacity 700ms var(--ease-out), transform 700ms var(--ease-out); transition-delay: var(--retraso, 0ms); }

@media (prefers-reduced-motion: reduce) {
  .js .capa, .js .capa.visible { clip-path: none; transition: none; }
  .js .sube { transform: none; }
  .js .sube.visible { transition: opacity 300ms ease; }
  .carrito, .carrito[data-abierto="true"] { transition: opacity 200ms ease, visibility 0s; transform: none; opacity: 0; }
  .carrito[data-abierto="true"] { opacity: 1; }
  .contador.salto { animation: none; }
}