/* Auto Dealer · Sección "Carro 3D" (usa variables de css/styles.css) */
.c3d { position: relative; }
.c3d__layout { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(300px, 1fr); gap: var(--space-xl); align-items: start; }
.c3d__stage-wrap { position: relative; }
.c3d__stage {
  position: relative; aspect-ratio: 4 / 3; width: 100%; overflow: hidden;
  border-radius: var(--radius-xl); border: 1px solid var(--color-border);
  background:
    radial-gradient(ellipse 70% 55% at 50% 62%, #ffffff 0%, rgba(255,255,255,0) 70%),
    linear-gradient(180deg, var(--color-bg-subtle) 0%, var(--color-bg-muted) 100%);
  touch-action: pan-y; /* scroll vertical libre; giro horizontal con el dedo */
  outline: none;
}
.c3d__stage:focus-visible { box-shadow: 0 0 0 3px var(--color-primary-subtle), 0 0 0 1px var(--color-primary); }
.c3d__canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; cursor: grab; touch-action: pan-y; }
.c3d__stage.is-dragging .c3d__canvas { cursor: grabbing; }
.c3d__poster { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; transition: opacity var(--duration-slow) var(--ease-out); }
.c3d--ready .c3d__poster { opacity: 0; pointer-events: none; }
.c3d--3d:not(.c3d--ready) .c3d__hot { visibility: hidden; }
.c3d__loader { position: absolute; left: 50%; bottom: var(--space-md); transform: translateX(-50%); font-size: 0.8rem; color: var(--color-text-muted); background: rgba(255,255,255,.85); padding: 4px 12px; border-radius: var(--radius-full); display: none; }
.c3d--loading .c3d__loader { display: block; }
.c3d__hint { position: absolute; left: var(--space-md); top: var(--space-md); margin: 0; font-size: 0.8rem; font-weight: 500; color: var(--color-text-secondary); background: rgba(255,255,255,.88); padding: 6px 12px; border-radius: var(--radius-full); pointer-events: none; box-shadow: var(--shadow-sm); }
.c3d__hint i { color: var(--color-primary); margin-right: 4px; }

/* Botón Desarmar / Armar */
.c3d__explode {
  position: absolute; right: var(--space-md); top: var(--space-md); z-index: 2; display: inline-flex; align-items: center; gap: 8px;
  min-height: 44px; padding: 8px 16px; border-radius: var(--radius-full); border: 1px solid var(--color-border);
  background: rgba(255,255,255,.94); color: var(--color-text); font: inherit; font-size: 0.88rem; font-weight: 600; cursor: pointer; box-shadow: var(--shadow-sm);
  transition: background var(--duration-fast), border-color var(--duration-fast), color var(--duration-fast);
}
.c3d__explode i { color: var(--color-primary); }
.c3d__explode:hover, .c3d__explode:focus-visible { border-color: var(--color-primary); outline: none; }
.c3d__explode[aria-pressed="true"] { background: var(--color-primary); border-color: var(--color-primary); color: #fff; }
.c3d__explode[aria-pressed="true"] i { color: #fff; }
.c3d__explode.is-busy { opacity: .7; cursor: progress; }
.c3d--fallback .c3d__explode { display: none; }
.c3d__explode[hidden], .c3d__ver3d[hidden] { display: none; }

/* Botón «Ver en 3D» (modo toque, particulares): encima de la imagen fija */
.c3d__ver3d {
  position: absolute; left: 50%; bottom: var(--space-md); transform: translateX(-50%); z-index: 2; display: inline-flex; align-items: center; gap: 8px;
  min-height: 44px; padding: 10px 20px; border-radius: var(--radius-full); border: 0; background: var(--color-primary); color: #fff;
  font: inherit; font-size: 0.92rem; font-weight: 600; cursor: pointer; box-shadow: var(--shadow-md); white-space: nowrap;
}
.c3d__ver3d:hover { background: var(--color-primary-dark); }
.c3d__ver3d:focus-visible { outline: 3px solid var(--color-primary-dark); outline-offset: 3px; }
@media (max-width: 520px) { .c3d__hint { max-width: calc(100% - 150px); line-height: 1.3; } }

/* Puntos calientes */
.c3d__hotspots { position: absolute; inset: 0; pointer-events: none; }
.c3d__hot {
  position: absolute; left: 0; top: 0; width: 44px; height: 44px; margin: -22px 0 0 -22px; padding: 0;
  border: 0; background: transparent; cursor: pointer; pointer-events: auto; will-change: transform;
  -webkit-tap-highlight-color: transparent; transition: opacity var(--duration-normal) ease;
}
.c3d--fallback .c3d__hot, .c3d--poster .c3d__hot { transform: none; }
.c3d__dot { position: absolute; left: 50%; top: 50%; width: 18px; height: 18px; margin: -9px 0 0 -9px; border-radius: 50%; background: var(--color-primary); border: 3px solid #fff; box-shadow: 0 2px 6px rgba(0,0,0,.25); }
.c3d__dot::after { content: ""; position: absolute; inset: -9px; border-radius: 50%; border: 2px solid var(--color-primary); opacity: 0; animation: c3d-pulse 1.8s var(--ease-out) infinite; }
@keyframes c3d-pulse { 0% { transform: scale(.5); opacity: .9; } 100% { transform: scale(1.6); opacity: 0; } }
.c3d__hot.is-active .c3d__dot, .c3d__hot:hover .c3d__dot, .c3d__hot:focus-visible .c3d__dot { background: var(--color-primary-dark); transform: scale(1.15); }
.c3d__hot:focus-visible { outline: none; }
.c3d__hot:focus-visible .c3d__dot { box-shadow: 0 0 0 3px rgba(200,16,46,.35); }
.c3d__label {
  position: absolute; left: 50%; bottom: 100%; transform: translate(-50%, 4px); white-space: nowrap;
  background: var(--color-bg-dark); color: var(--color-text-on-dark); font-size: 0.78rem; font-weight: 600; line-height: 1;
  padding: 7px 10px; border-radius: var(--radius-sm); opacity: 0; pointer-events: none; transition: opacity var(--duration-fast), transform var(--duration-fast);
}
.c3d__hot:hover .c3d__label, .c3d__hot:focus-visible .c3d__label, .c3d__hot.is-active .c3d__label { opacity: 1; transform: translate(-50%, -2px); }
.c3d__hot.is-hidden { opacity: 0; pointer-events: none; }

/* Lista de partes (accesible y respaldo) */
.c3d__list-title { font-size: 0.85rem; font-weight: 600; color: var(--color-text-muted); margin: var(--space-lg) 0 var(--space-sm); }
.c3d__parts { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: var(--space-sm); }
.c3d__part {
  display: inline-flex; align-items: center; gap: 8px; min-height: 44px; padding: 8px 14px; border-radius: var(--radius-full);
  border: 1px solid var(--color-border); background: var(--color-bg); color: var(--color-text); font: inherit; font-size: 0.9rem; font-weight: 500; text-decoration: none; cursor: pointer;
  transition: border-color var(--duration-fast), background var(--duration-fast);
}
.c3d__part i { color: var(--color-primary); width: 1em; text-align: center; }
.c3d__part:hover, .c3d__part:focus-visible { border-color: var(--color-primary); }
.c3d__part.is-active { background: var(--color-primary); border-color: var(--color-primary); color: #fff; }
.c3d__part.is-active i { color: #fff; }

/* Panel lateral: intro o tarjeta */
.c3d__panel { position: relative; }
.c3d__intro { padding: var(--space-xl); border-radius: var(--radius-xl); background: var(--color-bg-warm); border: 1px dashed var(--color-border); color: var(--color-text-secondary); }
.c3d__intro h3 { font-size: 1.15rem; margin: 0 0 var(--space-sm); color: var(--color-text); }
.c3d__intro p { margin: 0; font-size: 0.95rem; }
.c3d__card {
  position: relative; background: var(--color-bg); border: 1px solid var(--color-border); border-top: 4px solid var(--color-primary);
  border-radius: var(--radius-xl); box-shadow: var(--shadow-xl); padding: var(--space-xl); animation: c3d-in var(--duration-slow) var(--ease-out);
}
@keyframes c3d-in { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
.c3d__close { position: absolute; right: 12px; top: 12px; width: 44px; height: 44px; border-radius: 50%; border: 0; background: var(--color-bg-subtle); color: var(--color-text); cursor: pointer; font-size: 1rem; }
.c3d__close:hover { background: var(--color-bg-muted); }
.c3d__card-eyebrow { margin: 0 0 4px; font-size: 0.75rem; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; color: var(--color-primary); }
.c3d__card-title { margin: 0 0 var(--space-md); font-size: 1.4rem; line-height: 1.2; padding-right: 48px; }
.c3d__card-sub { margin: var(--space-md) 0 var(--space-sm); font-size: 0.85rem; font-weight: 700; color: var(--color-text); }
.c3d__check, .c3d__warn { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; font-size: 0.93rem; color: var(--color-text-secondary); }
.c3d__check li, .c3d__warn li { position: relative; padding-left: 26px; }
.c3d__check li::before, .c3d__warn li::before { font-family: "Font Awesome 6 Free"; font-weight: 900; position: absolute; left: 0; top: 1px; font-size: 0.85rem; }
.c3d__check li::before { content: "\f00c"; color: var(--color-success); }
.c3d__warn li::before { content: "\f071"; color: var(--color-warning); }
.c3d__card-actions { margin-top: var(--space-lg); display: flex; flex-direction: column; gap: var(--space-sm); align-items: stretch; }
.c3d__card-actions .btn { justify-content: center; }
.c3d__more { text-align: center; font-size: 0.9rem; font-weight: 600; color: var(--color-primary); text-decoration: none; }
.c3d__more:hover { text-decoration: underline; }
.c3d__backdrop { display: none; }
.c3d__credit { margin: var(--space-sm) 0 0; font-size: 0.72rem; color: var(--color-text-secondary); }
.c3d__credit a { color: inherit; }

/* Móvil: la tarjeta sale como hoja inferior */
@media (max-width: 900px) {
  .c3d__layout { grid-template-columns: 1fr; gap: var(--space-md); }
  .c3d__stage { aspect-ratio: 1 / 1; max-height: 70vh; }
  .c3d__intro { display: none; }
  .c3d__card {
    position: fixed; left: 0; right: 0; bottom: 0; z-index: 1001; max-height: 78vh; overflow-y: auto; overscroll-behavior: contain;
    border-radius: var(--radius-xl) var(--radius-xl) 0 0; border-top-width: 4px; padding: var(--space-lg) var(--space-lg) calc(var(--space-lg) + env(safe-area-inset-bottom));
    animation: c3d-up var(--duration-slow) var(--ease-out);
  }
  .c3d--open .c3d__backdrop { display: block; position: fixed; inset: 0; z-index: 1000; background: rgba(0,0,0,.35); }
  /* Con el 3D la hoja es más baja, para que se vea la pieza separada encima */
  .c3d--3d .c3d__card { max-height: 60vh; }
  .c3d--3d.c3d--open .c3d__backdrop { background: rgba(0,0,0,.12); }
}
/* El respaldo sin 3D usa la imagen 4:3 también en móvil (más grande). La imagen fija previa al
   «Ver en 3D» (c3d--poster) guarda la misma proporción que el escenario 3D (4:3 en escritorio,
   1:1 en móvil) para que la sección no salte al tocar; los puntos se ajustan a la imagen en JS. */
.c3d--fallback .c3d__stage { aspect-ratio: 4 / 3; max-height: none; }
/* Móvil: la imagen 4:3 dentro del cuadrado 1:1 se funde arriba y abajo con el fondo del escenario */
@media (max-width: 900px) {
  .c3d--poster .c3d__poster {
    -webkit-mask-image: linear-gradient(180deg, transparent 12%, #000 22%, #000 80%, transparent 88%);
            mask-image: linear-gradient(180deg, transparent 12%, #000 22%, #000 80%, transparent 88%);
  }
}
/* Móvil: los puntos del capó quedan muy juntos. Batería y aire (sin pieza en el modelo) se
   quitan del carro en pantallas chicas; siguen en la lista de partes. */
@media (max-width: 600px) {
  .c3d__hot[data-id="bateria"], .c3d__hot[data-id="aire"] { display: none; }
}

@keyframes c3d-up { from { transform: translateY(100%); } to { transform: none; } }

@media (prefers-reduced-motion: reduce) {
  .c3d__dot::after { animation: none; opacity: .5; transform: scale(1.2); }
  .c3d__card { animation: none; }
}