:root {
  --fg: #18181b;
  --muted: #71717a;
  --borde: #e4e4e7;
  --suave: #f4f4f5;
  --fondo: #ffffff;
  --rojo: #dc2626;
  --rojo-osc: #b91c1c;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--fondo); color: var(--fg);
  font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
button { font: inherit; color: inherit; cursor: pointer; }
input, textarea { font: inherit; }
[hidden] { display: none !important; }
.wrap { max-width: 1024px; margin: 0 auto; padding: 0 16px; }
.muted { color: var(--muted); }
.chico-txt { font-size: 12px; }

/* encabezado */
.top { position: sticky; top: 0; z-index: 20; background: rgba(255,255,255,.96); border-bottom: 2px solid var(--rojo); backdrop-filter: blur(6px); }
.top-in { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding-top: 12px; padding-bottom: 12px; }
.marca { display: flex; align-items: center; gap: 12px; }
.logo { height: 28px; width: auto; }
.marca-sub { font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); line-height: 1.2; }
.marca-tit { font-size: 14px; font-weight: 700; line-height: 1.2; }

main { padding-top: 20px; padding-bottom: 110px; }
h1 { font-size: 20px; margin: 0; line-height: 1.3; }
h2 { font-size: 18px; margin: 0; line-height: 1.3; }

/* botones */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; border: 1px solid var(--borde); background: var(--fondo); border-radius: 8px; padding: 8px 14px; font-weight: 500; }
.btn:hover { border-color: #a1a1aa; }
.btn.rojo { background: var(--rojo); border-color: var(--rojo); color: #fff; }
.btn.rojo:hover { background: var(--rojo-osc); }
.btn.chico { padding: 5px 10px; font-size: 13px; }
.btn.icono { width: 30px; height: 30px; padding: 0; font-size: 16px; line-height: 1; }
.btn.ancho { width: 100%; }
.btn:disabled { opacity: .6; cursor: default; }
.link { background: none; border: 0; padding: 0; color: var(--muted); font-size: 13px; }
.link:hover { color: var(--fg); }

/* modelos */
.modelos { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin-top: 16px; }
@media (min-width: 640px) { .modelos { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 768px) { .modelos { grid-template-columns: repeat(4, 1fr); } }
.modelo { display: flex; align-items: center; justify-content: space-between; text-align: left; border: 1px solid var(--borde); border-radius: 10px; background: var(--fondo); padding: 16px; }
.modelo:hover { border-color: var(--rojo); background: #fef2f2; }
.modelo b { display: block; }

/* filtros */
.cab { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 10px; }
.buscar { width: 100%; padding: 8px 12px; border: 1px solid var(--borde); border-radius: 8px; }
@media (min-width: 640px) { .buscar { width: 260px; } }
.chips { display: flex; gap: 8px; overflow-x: auto; margin: 14px -16px 0; padding: 0 16px 4px; }
.chip { white-space: nowrap; border: 1px solid var(--borde); background: var(--fondo); border-radius: 999px; padding: 4px 12px; font-size: 14px; }
.chip.on { background: var(--rojo); border-color: var(--rojo); color: #fff; }
.chip.gris { border: 0; background: var(--suave); font-size: 12px; }
.chip.gris.on { background: var(--fg); color: #fff; }
.ayuda { margin: 6px 0 0; font-size: 12px; color: var(--muted); }

/* grilla de accesorios */
.grilla { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin-top: 16px; }
@media (min-width: 768px) { .grilla { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 1024px) { .grilla { grid-template-columns: repeat(4, 1fr); } }
.card { display: flex; flex-direction: column; border: 1px solid var(--borde); border-radius: 10px; overflow: hidden; min-width: 0; }
.card.en { border-color: var(--rojo); box-shadow: 0 0 0 1px var(--rojo); }
.card-foto { position: relative; border: 0; padding: 0; background: #fff; display: block; width: 100%; }
.foto { display: block; width: 100%; aspect-ratio: 1 / 1; object-fit: contain; background: #fff; }
.sinfoto { display: flex; align-items: center; justify-content: center; width: 100%; aspect-ratio: 1 / 1; background: var(--suave); color: #a1a1aa; font-size: 12px; }
.card-foto .tipo { position: absolute; left: 8px; top: 8px; }
.card-cuerpo { display: flex; flex: 1; flex-direction: column; gap: 4px; padding: 10px; }
.card-tit { border: 0; background: none; padding: 0; text-align: left; font-size: 14px; font-weight: 500; line-height: 1.3; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.card-tit:hover { text-decoration: underline; }
.card-pie { margin-top: auto; display: flex; align-items: center; justify-content: space-between; gap: 4px; padding-top: 4px; }
.precio { font-weight: 700; font-variant-numeric: tabular-nums; font-size: 14px; }
.consultar { font-size: 12px; font-weight: 400; color: var(--muted); }
.cant { display: flex; align-items: center; gap: 2px; }
.cant span { width: 22px; text-align: center; font-variant-numeric: tabular-nums; }

.tipo { border-radius: 4px; padding: 2px 6px; font-size: 10px; font-weight: 600; text-transform: uppercase; letter-spacing: .04em; background: var(--rojo); color: #fff; }
.tipo.GR { background: #18181b; }
.tipo.AUTORIZADO { background: #e0f2fe; color: #0c4a6e; }

/* barra inferior */
.barra { position: fixed; left: 0; right: 0; bottom: 0; z-index: 20; border-top: 1px solid var(--borde); background: rgba(255,255,255,.96); backdrop-filter: blur(6px); padding: 12px 0; }
.barra .wrap { display: flex; align-items: center; justify-content: space-between; gap: 12px; }

/* modal */
.modal { position: fixed; inset: 0; z-index: 30; background: rgba(0,0,0,.5); display: flex; align-items: flex-end; justify-content: center; }
@media (min-width: 640px) { .modal { align-items: center; } }
.modal-caja { width: 100%; max-width: 520px; max-height: 90vh; overflow-y: auto; background: var(--fondo); border-radius: 14px 14px 0 0; }
@media (min-width: 640px) { .modal-caja { border-radius: 14px; } }
.modal-foto { position: relative; }
.modal-foto .foto, .modal-foto .sinfoto { aspect-ratio: 4 / 3; }
.cerrar { position: absolute; right: 8px; top: 8px; width: 32px; height: 32px; border-radius: 999px; border: 0; background: rgba(255,255,255,.92); box-shadow: 0 1px 3px rgba(0,0,0,.2); font-size: 18px; line-height: 1; }
.modal-cuerpo { padding: 16px; display: grid; gap: 12px; }
.modal-cuerpo ul { margin: 0; padding-left: 20px; font-size: 14px; }
.modal-cuerpo li { margin: 3px 0; }
.modal-pie { display: flex; align-items: center; justify-content: space-between; border-top: 1px solid var(--borde); padding-top: 12px; gap: 8px; }

/* pedido */
.angosto { max-width: 520px; margin: 0 auto; display: grid; gap: 18px; }
.lista { list-style: none; margin: 0; padding: 0; border: 1px solid var(--borde); border-radius: 10px; }
.lista li { display: flex; gap: 12px; padding: 12px; }
.lista li + li { border-top: 1px solid var(--borde); }
.lista .foto, .lista .sinfoto { width: 64px; height: 64px; flex-shrink: 0; border-radius: 6px; aspect-ratio: auto; }
.lista .info { min-width: 0; flex: 1; }
.lista .fila { display: flex; align-items: center; justify-content: space-between; margin-top: 8px; }
.total { display: flex; align-items: baseline; justify-content: space-between; border-top: 1px solid var(--borde); padding-top: 12px; }
.total b { font-size: 20px; font-variant-numeric: tabular-nums; }
.form { border: 1px solid var(--borde); border-radius: 10px; padding: 16px; display: grid; gap: 12px; }
.campo { display: grid; gap: 5px; }
.campo label { font-size: 13px; font-weight: 500; }
.campo input, .campo textarea { width: 100%; padding: 8px 10px; border: 1px solid var(--borde); border-radius: 8px; background: var(--fondo); }
.campo input:focus, .campo textarea:focus, .buscar:focus { outline: 2px solid #fca5a5; border-color: var(--rojo); }
.dos { display: grid; gap: 12px; }
@media (min-width: 640px) { .dos { grid-template-columns: 1fr 1fr; } }
.aviso { color: var(--rojo); font-size: 14px; margin: 0; }
.error { margin: 40px auto; max-width: 520px; border: 1px solid #fca5a5; background: #fef2f2; color: #991b1b; border-radius: 8px; padding: 12px; font-size: 14px; }
.ok { text-align: center; max-width: 520px; margin: 30px auto; display: grid; gap: 14px; justify-items: center; }
.ok .tilde { width: 52px; height: 52px; border-radius: 999px; background: #16a34a; color: #fff; display: flex; align-items: center; justify-content: center; font-size: 28px; }

.cargando { display: flex; justify-content: center; padding: 60px 0; }
.spin { width: 24px; height: 24px; border: 3px solid var(--borde); border-top-color: var(--rojo); border-radius: 999px; animation: gira .8s linear infinite; display: inline-block; }
.spin.blanco { width: 14px; height: 14px; border-width: 2px; border-color: rgba(255,255,255,.4); border-top-color: #fff; }
@keyframes gira { to { transform: rotate(360deg); } }