:root {
  --color-primario: #1f2937;
  --color-acento: #2563eb;
  --color-whatsapp: #25d366;
  --color-whatsapp-oscuro: #1eb85a;
  --color-fondo: #f4f5f7;
  --color-tarjeta: #ffffff;
  --color-texto: #1f2937;
  --color-texto-suave: #6b7280;
  --color-borde: #e5e7eb;
  --sombra: 0 1px 3px rgba(0, 0, 0, 0.08), 0 4px 12px rgba(0, 0, 0, 0.06);
  --radio: 12px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--color-fondo);
  color: var(--color-texto);
  line-height: 1.45;
}

/* ---------- Header ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  background: var(--color-primario);
  color: #fff;
}

.header__titulo {
  font-size: 1.25rem;
  line-height: 1.2;
}

.header__subtitulo {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.75);
}

.header__carrito {
  position: relative;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  cursor: pointer;
  flex-shrink: 0;
}

.header__badge {
  position: absolute;
  top: -4px;
  right: -4px;
  min-width: 20px;
  height: 20px;
  padding: 0 5px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: var(--color-acento);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
}

/* ---------- Buscador y categorías ---------- */
.contenido {
  max-width: 1100px;
  margin: 0 auto;
  padding: 16px;
}

.buscador input {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--color-borde);
  border-radius: var(--radio);
  font-size: 1rem;
  background: var(--color-tarjeta);
}

.buscador input:focus {
  outline: 2px solid var(--color-acento);
  outline-offset: -1px;
}

.categorias {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 12px 0;
  scrollbar-width: thin;
}

.chip {
  flex-shrink: 0;
  padding: 7px 14px;
  border: 1px solid var(--color-borde);
  border-radius: 999px;
  background: var(--color-tarjeta);
  color: var(--color-texto);
  font-size: 0.85rem;
  cursor: pointer;
  white-space: nowrap;
}

.chip--activo {
  background: var(--color-primario);
  border-color: var(--color-primario);
  color: #fff;
}

.chip__conteo {
  opacity: 0.65;
  font-size: 0.75rem;
  margin-left: 4px;
}

.resultados-info {
  font-size: 0.82rem;
  color: var(--color-texto-suave);
  margin-bottom: 10px;
}

/* ---------- Grid de productos ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 12px;
}

@media (min-width: 640px) {
  .grid {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
  }
}

.tarjeta {
  display: flex;
  flex-direction: column;
  background: var(--color-tarjeta);
  border-radius: var(--radio);
  box-shadow: var(--sombra);
  overflow: hidden;
}

.tarjeta__imagen {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  background: #fafafa;
}

.tarjeta__cuerpo {
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: 6px;
  padding: 12px;
}

.tarjeta__nombre {
  font-size: 0.88rem;
  font-weight: 600;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 2.5em;
}

.tarjeta__meta {
  font-size: 0.75rem;
  color: var(--color-texto-suave);
}

.tarjeta__precio {
  font-size: 1.05rem;
  font-weight: 700;
  margin-top: auto;
}

/* ---------- Botones ---------- */
.btn {
  padding: 10px 16px;
  border: none;
  border-radius: var(--radio);
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
}

.btn--primario {
  background: var(--color-primario);
  color: #fff;
}

.btn--secundario {
  background: var(--color-tarjeta);
  border: 1px solid var(--color-borde);
  color: var(--color-texto);
}

.btn--whatsapp {
  background: var(--color-whatsapp);
  color: #fff;
}

.btn--whatsapp:hover {
  background: var(--color-whatsapp-oscuro);
}

.btn--block {
  width: 100%;
}

.tarjeta .btn {
  margin-top: 8px;
}

/* ---------- Estado vacío ---------- */
.vacio {
  text-align: center;
  padding: 48px 16px;
  color: var(--color-texto-suave);
}

.vacio .btn {
  margin-top: 14px;
}

/* ---------- Drawer carrito ---------- */
.overlay {
  position: fixed;
  inset: 0;
  z-index: 30;
  background: rgba(0, 0, 0, 0.45);
}

.drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  z-index: 40;
  width: min(400px, 92vw);
  display: flex;
  flex-direction: column;
  background: var(--color-tarjeta);
  box-shadow: -4px 0 16px rgba(0, 0, 0, 0.15);
  transform: translateX(100%);
  transition: transform 0.25s ease;
}

.drawer--abierto {
  transform: translateX(0);
}

.drawer__encabezado {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px;
  border-bottom: 1px solid var(--color-borde);
}

.drawer__cerrar {
  border: none;
  background: none;
  font-size: 1.6rem;
  line-height: 1;
  cursor: pointer;
  color: var(--color-texto-suave);
}

.drawer__vacio {
  padding: 48px 20px;
  text-align: center;
  color: var(--color-texto-suave);
}

.drawer__vacio-hint {
  font-size: 0.85rem;
  margin-top: 6px;
}

.drawer__items {
  flex: 1;
  overflow-y: auto;
  list-style: none;
  padding: 12px 16px;
}

.item-carrito {
  display: grid;
  grid-template-columns: 56px 1fr auto;
  gap: 10px;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--color-borde);
}

.item-carrito img {
  width: 56px;
  height: 56px;
  object-fit: cover;
  border-radius: 8px;
  background: #fafafa;
}

.item-carrito__nombre {
  font-size: 0.82rem;
  font-weight: 600;
}

.item-carrito__precio {
  font-size: 0.78rem;
  color: var(--color-texto-suave);
}

.item-carrito__controles {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 6px;
}

.item-carrito__controles button {
  width: 26px;
  height: 26px;
  border: 1px solid var(--color-borde);
  border-radius: 6px;
  background: var(--color-tarjeta);
  cursor: pointer;
  font-size: 0.95rem;
  line-height: 1;
}

.item-carrito__cantidad {
  min-width: 20px;
  text-align: center;
  font-weight: 600;
  font-size: 0.9rem;
}

.item-carrito__eliminar {
  border: none;
  background: none;
  color: #dc2626;
  cursor: pointer;
  font-size: 1.1rem;
  align-self: start;
}

.drawer__pie {
  padding: 16px;
  border-top: 1px solid var(--color-borde);
}

.drawer__total {
  display: flex;
  justify-content: space-between;
  font-size: 1.05rem;
  margin-bottom: 12px;
}

/* ---------- Modal checkout ---------- */
.modal {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: grid;
  place-items: center;
  padding: 16px;
  background: rgba(0, 0, 0, 0.45);
}

.modal[hidden] {
  display: none;
}

.modal__caja {
  width: min(420px, 100%);
  max-height: 90vh;
  overflow-y: auto;
  background: var(--color-tarjeta);
  border-radius: var(--radio);
  padding: 20px;
  box-shadow: var(--sombra);
}

.modal__encabezado {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.form-checkout {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.form-checkout label,
.form-checkout legend {
  font-size: 0.85rem;
  font-weight: 600;
}

.form-checkout input[type="text"],
.form-checkout input[type="tel"] {
  width: 100%;
  margin-top: 4px;
  padding: 10px 12px;
  border: 1px solid var(--color-borde);
  border-radius: 8px;
  font-size: 0.95rem;
}

.form-checkout__pago {
  border: none;
  display: flex;
  gap: 16px;
}

.form-checkout__radio {
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 500 !important;
}

.opcional {
  font-weight: 400;
  color: var(--color-texto-suave);
}

.datos-banco {
  padding: 12px;
  border: 1px dashed var(--color-borde);
  border-radius: 8px;
  background: #fafafa;
  font-size: 0.85rem;
  line-height: 1.7;
}

/* ---------- WhatsApp flotante ---------- */
.whatsapp-flotante {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 25;
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-whatsapp);
  color: #fff;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
}

.whatsapp-flotante:hover {
  background: var(--color-whatsapp-oscuro);
}