/* ---------- Botones ---------- */
.btn {
  --h: 48px;
  display: inline-flex; align-items: center; justify-content: center; gap: 0.6em;
  min-height: var(--h); padding: 0 1.4em;
  border-radius: var(--radius-pill); border: 1px solid transparent;
  font-size: var(--fs-sm); font-weight: 700; letter-spacing: 0.04em; text-transform: uppercase;
  text-decoration: none; white-space: nowrap;
  touch-action: manipulation;
  transition: transform var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out), background-color var(--dur), border-color var(--dur);
}
.btn:active { transform: scale(0.97); }
.btn--gold {
  background: var(--gold-grad); color: var(--on-gold);
  box-shadow: 0 10px 24px -12px rgba(214, 173, 96, 0.7), inset 0 1px 0 rgba(255, 255, 255, 0.45);
}
.btn--gold:hover { box-shadow: 0 14px 30px -10px rgba(214, 173, 96, 0.85), inset 0 1px 0 rgba(255, 255, 255, 0.55); }
.btn--ghost { border-color: var(--line-strong); color: var(--text); background: rgba(11, 10, 8, 0.4); }
.btn--ghost:hover { border-color: var(--gold); background: rgba(214, 173, 96, 0.08); }
.btn--lg { --h: 54px; font-size: 0.95rem; }
.btn--sm { --h: 44px; padding: 0 1.1em; font-size: var(--fs-xs); }
.btn--block { width: 100%; }
.btn--icon {
  width: 44px; min-height: 44px; padding: 0; border-color: var(--line-strong); color: var(--wa);
  border-radius: 50%;
}
.btn--icon:hover { border-color: var(--wa); background: rgba(37, 211, 102, 0.1); }
.btn .ico { width: 1.15em; height: 1.15em; }

/* ---------- Cabecera ---------- */
.site-header {
  position: sticky; top: env(safe-area-inset-top, 0px); z-index: var(--z-header);
  background: rgba(11, 10, 8, 0.72);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur), background-color var(--dur);
}
.site-header.is-scrolled { border-bottom-color: var(--line); background: rgba(11, 10, 8, 0.92); }
.site-header__inner { display: flex; align-items: center; justify-content: space-between; gap: var(--s-4); min-height: var(--header-h); }

.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; }
.brand__emblem { width: 58px; height: auto; }
.brand__word {
  display: flex; flex-direction: column; align-items: center; line-height: 1;
  font-family: var(--f-brand); font-weight: 700; font-size: 1.45rem; letter-spacing: 0.08em;
  background: var(--gold-grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.brand__word small { font-size: 0.5rem; letter-spacing: 0.4em; margin-top: 4px; padding-left: 0.4em; }

.nav-toggle {
  display: inline-grid; place-items: center; width: 48px; height: 48px;
  border-radius: 50%; border: 1px solid var(--line-strong); background: transparent; color: var(--gold);
}
.nav-toggle .ico { width: 22px; height: 22px; }

.site-nav {
  position: fixed; inset: calc(var(--header-h) + env(safe-area-inset-top, 0px)) 0 0 0;
  display: flex; flex-direction: column; gap: var(--s-6);
  padding: var(--s-6) max(16px, env(safe-area-inset-right, 0px)) calc(var(--s-6) + env(safe-area-inset-bottom, 0px)) max(16px, env(safe-area-inset-left, 0px));
  background: var(--ink);
  border-top: 1px solid var(--line);
  visibility: hidden; opacity: 0; transform: translateY(-8px);
  transition: opacity var(--dur) var(--ease-out), transform var(--dur) var(--ease-out), visibility 0s linear var(--dur);
  overflow-y: auto;
}
.site-nav.is-open { visibility: visible; opacity: 1; transform: none; transition-delay: 0s; }
.site-nav__list { display: flex; flex-direction: column; }
.site-nav__list a {
  display: block; padding: 14px 4px; border-bottom: 1px solid var(--line);
  font-family: var(--f-display); font-size: 1.35rem; text-decoration: none; color: var(--text);
}
.site-nav__list a.is-active { color: var(--gold); }

@media (min-width: 1024px) {
  .nav-toggle { display: none; }
  .site-nav {
    position: static; flex-direction: row; align-items: center; gap: var(--s-6);
    padding: 0; background: none; border: 0; visibility: visible; opacity: 1; transform: none; overflow: visible;
  }
  .site-nav__list { flex-direction: row; gap: var(--s-1); }
  .site-nav__list a {
    position: relative; padding: 10px 12px; border: 0;
    font-family: var(--f-body); font-size: var(--fs-sm); font-weight: 500; color: var(--muted);
    transition: color var(--dur);
  }
  .site-nav__list a:hover { color: var(--text); }
  .site-nav__list a.is-active { color: var(--gold); }
  .site-nav__list a.is-active::after {
    content: ''; position: absolute; left: 12px; right: 12px; bottom: 4px; height: 2px; border-radius: 2px; background: var(--gold-grad);
  }
}

/* ---------- Encabezados de sección ---------- */
.section-head { display: grid; gap: var(--s-3); margin-bottom: var(--s-7); }
.section-head--center { text-align: center; justify-items: center; }
.section-head--split { align-items: end; }
@media (min-width: 768px) {
  .section-head--split { grid-template-columns: 1fr auto; }
}

/* ---------- Chips y badges ---------- */
.filters { display: flex; flex-wrap: wrap; gap: var(--s-2); }
.chip {
  min-height: 44px; padding: 0 1.1em; border-radius: var(--radius-pill);
  border: 1px solid var(--line-strong); background: transparent; color: var(--muted);
  font-size: var(--fs-sm); font-weight: 600;
  transition: background-color var(--dur), color var(--dur), border-color var(--dur);
}
.chip:hover { color: var(--text); border-color: var(--gold); }
.chip[aria-pressed='true'] { background: var(--gold-grad); color: var(--on-gold); border-color: transparent; }

.badge {
  display: inline-flex; align-items: center; padding: 4px 10px; border-radius: var(--radius-pill);
  font-size: 0.7rem; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase;
  background: rgba(11, 10, 8, 0.75); color: var(--gold-hi); border: 1px solid var(--line-strong);
}

/* ---------- Carrusel de modelos ---------- */
.rail { position: relative; }
.rail__track {
  display: grid; grid-auto-flow: column; grid-auto-columns: minmax(268px, 82%);
  gap: 20px; overflow-x: auto; overscroll-behavior-x: contain;
  scroll-snap-type: x mandatory; scroll-padding-inline: 2px;
  padding: 4px 2px 20px; scrollbar-width: thin; scrollbar-color: var(--gold-lo) transparent;
}
@media (min-width: 640px) { .rail__track { grid-auto-columns: calc((100% - 20px) / 2); } }
@media (min-width: 1024px) { .rail__track { grid-auto-columns: calc((100% - 60px) / 4); } }
.rail__btn {
  position: absolute; top: 38%; z-index: 2; display: none; place-items: center;
  width: 48px; height: 48px; border-radius: 50%;
  background: rgba(11, 10, 8, 0.85); color: var(--gold); border: 1px solid var(--line-strong);
  transition: opacity var(--dur), border-color var(--dur);
}
.rail__btn:hover { border-color: var(--gold); }
.rail__btn:disabled { opacity: 0.3; cursor: default; }
.rail__btn--prev { left: -12px; }
.rail__btn--next { right: -12px; }
@media (min-width: 768px) { .rail__btn { display: grid; } }
@media (min-width: 1280px) { .rail__btn--prev { left: -64px; } .rail__btn--next { right: -64px; } }
.rail.is-static .rail__btn { display: none; }

/* ---------- Tarjeta de modelo ---------- */
.model-card {
  scroll-snap-align: start;
  display: flex; flex-direction: column; min-width: 0;
  background: linear-gradient(180deg, var(--panel), var(--ink-2));
  border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--dur), transform var(--dur) var(--ease-out);
}
.model-card:hover { border-color: var(--line-strong); transform: translateY(-3px); }
.model-card--skeleton { min-height: 520px; background: var(--panel); }
.model-card__media {
  position: relative; aspect-ratio: 6 / 5; max-width: 100%;
  display: grid; place-items: center; padding: var(--s-5) var(--s-4) 0;
  background: radial-gradient(70% 60% at 50% 60%, rgba(214, 173, 96, 0.22), transparent 70%);
}
.model-card__media img {
  position: absolute; inset: 48px 16px 4px; width: calc(100% - 32px); height: calc(100% - 52px);
  object-fit: contain; filter: drop-shadow(0 20px 22px rgba(0, 0, 0, 0.7));
}
.model-card__media .badge { position: absolute; top: 14px; left: 14px; z-index: 1; }
.model-card__body { display: flex; flex-direction: column; gap: var(--s-3); padding: var(--s-4) var(--s-5) var(--s-5); flex: 1; }
.model-card h3 { font-family: var(--f-display); font-size: var(--fs-xl); color: var(--text); }
.model-card__pitch { color: var(--muted); font-size: var(--fs-sm); }
.model-card__hl { display: grid; gap: 6px; font-size: var(--fs-sm); }
.model-card__hl li { display: flex; gap: 8px; align-items: flex-start; }
.model-card__hl .ico { color: var(--gold); width: 1.05em; height: 1.05em; margin-top: 0.25em; }
.model-card__color { font-size: var(--fs-xs); color: var(--muted); min-height: 32px; display: flex; align-items: center; }
.model-card__price {
  margin-top: auto; display: flex; flex-direction: column;
  font-family: var(--f-display); font-size: 1.6rem; font-weight: 700; color: var(--gold-hi);
  font-variant-numeric: tabular-nums;
}
.model-card__price small { font-family: var(--f-body); font-size: 0.7rem; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); }
.model-card__actions { display: flex; gap: var(--s-2); align-items: center; }
.model-card__actions .btn--gold { flex: 1; }

.swatches { display: flex; gap: 10px; min-height: 32px; align-items: center; }
.swatch {
  width: 32px; height: 32px; border-radius: 50%; padding: 0;
  background: var(--swatch); border: 2px solid var(--line-strong);
  box-shadow: inset 0 0 0 3px var(--ink-2);
}
.swatch[aria-pressed='true'] { border-color: var(--gold-hi); }

/* ---------- Ficha de modelo (dialog) ---------- */
.model-dialog {
  width: min(960px, calc(100% - 24px)); max-height: calc(100dvh - 24px);
  padding: 0; border: 1px solid var(--line-strong); border-radius: var(--radius);
  background: var(--ink-2); color: var(--text); box-shadow: var(--shadow);
}
.model-dialog::backdrop { background: rgba(0, 0, 0, 0.72); backdrop-filter: blur(4px); }
.model-dialog[open] { animation: dlg-in 260ms var(--ease-out); }
@keyframes dlg-in { from { opacity: 0; transform: translateY(12px) scale(0.98); } }
.model-dialog__body { position: relative; display: grid; }
@media (min-width: 840px) { .model-dialog__body { grid-template-columns: 0.9fr 1.1fr; } }
.model-dialog__close {
  position: absolute; top: 12px; right: 12px; z-index: 1;
  width: 44px; height: 44px; display: grid; place-items: center; border-radius: 50%;
  background: rgba(11, 10, 8, 0.8); border: 1px solid var(--line-strong); color: var(--text);
}
.model-dialog__media {
  display: grid; place-items: center; padding: var(--s-6); min-height: 260px;
  background: radial-gradient(70% 60% at 50% 55%, rgba(214, 173, 96, 0.25), transparent 70%), var(--ink);
}
.model-dialog__media img { max-height: 420px; width: auto; object-fit: contain; }
@media (min-width: 840px) {
  .model-dialog__media { position: sticky; top: 0; align-self: start; height: calc(100dvh - 26px); max-height: 100%; }
}
.model-dialog__content { display: flex; flex-direction: column; gap: var(--s-4); padding: var(--s-6) var(--s-5); min-width: 0; }
@media (min-width: 840px) { .model-dialog__content { padding: var(--s-7) var(--s-6); } }
.model-dialog__content h2 { font-size: var(--fs-2xl); }
.model-dialog__content h3 { font-size: var(--fs-sm); letter-spacing: 0.12em; text-transform: uppercase; color: var(--gold); margin-top: var(--s-2); }
.model-dialog__price { font-family: var(--f-display); font-size: 1.75rem; font-weight: 700; color: var(--gold-hi); font-variant-numeric: tabular-nums; }
.model-dialog__note { font-size: var(--fs-xs); color: var(--muted); text-align: center; }
.spec-list { display: grid; gap: 8px; font-size: var(--fs-sm); }
.spec-list li { display: flex; gap: 10px; }
.spec-list .ico { color: var(--gold); width: 1em; height: 1em; margin-top: 0.3em; }
.spec-sheet { display: grid; gap: 1px; margin: 0; border: 1px solid var(--line); border-radius: var(--radius-sm); overflow: hidden; background: var(--line); }
.spec-sheet div { display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); gap: var(--s-3); padding: 10px 14px; background: var(--ink-2); font-size: var(--fs-sm); }
.spec-sheet dt { color: var(--muted); }
.spec-sheet dd { margin: 0; font-variant-numeric: tabular-nums; }

/* ---------- Listas con check ---------- */
.checklist { display: grid; gap: 10px; }
.checklist li { display: flex; gap: 10px; align-items: flex-start; }
.checklist .ico { color: var(--gold); width: 1.1em; height: 1.1em; margin-top: 0.25em; }

/* ---------- Formulario ---------- */
.lead-form {
  display: grid; gap: var(--s-4); padding: var(--s-6) var(--s-5);
  border: 1px solid var(--line-strong); border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(26, 23, 18, 0.95), rgba(11, 10, 8, 0.95));
  box-shadow: var(--glow); min-width: 0;
}
.lead-form h3 { font-family: var(--f-display); font-size: var(--fs-xl); color: var(--gold-hi); text-align: center; }
.lead-form__hint { font-size: var(--fs-sm); color: var(--muted); text-align: center; }
.field { display: grid; gap: 6px; }
.field label { font-size: var(--fs-sm); font-weight: 600; }
.field__optional { color: var(--muted); font-weight: 400; }
.field__control {
  display: flex; align-items: center; gap: 10px; min-height: 52px; padding: 0 14px;
  border: 1px solid var(--line-strong); border-radius: var(--radius-sm); background: var(--ink);
  transition: border-color var(--dur), box-shadow var(--dur);
}
.field__control:focus-within { border-color: var(--gold); box-shadow: 0 0 0 3px rgba(214, 173, 96, 0.25); }
.field__control .ico { color: var(--gold); }
.field__control input, .field__control select {
  flex: 1; min-width: 0; min-height: 50px; border: 0; background: transparent; font-size: var(--fs-md); outline: none;
}
.field__control select { appearance: none; cursor: pointer; background: var(--ink); }
.field__control--select { position: relative; }
.field__control--select::after {
  content: ''; position: absolute; right: 16px; width: 8px; height: 8px;
  border-right: 2px solid var(--gold); border-bottom: 2px solid var(--gold); transform: rotate(45deg) translateY(-3px);
  pointer-events: none;
}
.field input[aria-invalid='true'] { color: var(--text); }
.field:has(input[aria-invalid='true']) .field__control { border-color: var(--danger); }
.field__error { font-size: var(--fs-sm); color: var(--danger); min-height: 0; }
.field__error:empty { display: none; }
.lead-form__status { font-size: var(--fs-sm); color: var(--muted); text-align: center; }
.lead-form__status:empty { display: none; }
.lead-form__status a { color: var(--gold-hi); }

/* ---------- Redes ---------- */
.social { display: flex; flex-wrap: wrap; gap: var(--s-3); }
.social__item {
  display: inline-flex; align-items: center; gap: 10px; min-height: 48px; padding: 6px 16px 6px 8px;
  border: 1px solid var(--line); border-radius: var(--radius-pill); text-decoration: none;
  font-size: var(--fs-sm); font-weight: 600;
}
a.social__item:hover { border-color: var(--gold); }
.social__item .ico { width: 34px; height: 34px; padding: 7px; border-radius: 50%; background: var(--panel); color: var(--gold); }
.social__item span { display: flex; flex-direction: column; line-height: 1.2; }
.social__item small { font-size: 0.68rem; font-weight: 500; color: var(--muted); letter-spacing: 0.06em; }

/* WhatsApp flotante, flecha "volver arriba" y chatbot: ver floating.css */