/* ==========================================================================
   El Potrero — Tarjeta de sellos (cliente)
   Blanco y negro, lujo de parrilla. El único color es el fuego de las brasas.
   ========================================================================== */

:root {
  --negro: #0b0b0b;
  --carbon: #141414;
  --ceniza: #1d1d1d;
  --borde: #2b2b2b;
  --linea: rgba(255, 255, 255, 0.12);
  --blanco: #f6f4ef;
  --texto: #e9e6df;
  --tenue: #a7a39b;      /* 7.5:1 sobre --negro */
  --apagado: #8c8880;    /* 5.2:1 sobre --carbon */

  --brasa: #ff7a2f;
  --brasa-clara: #ffd8a8;
  --brasa-honda: #c2321b;
  --error: #ff8a7a;

  --serif: 'Playfair Display', Georgia, serif;
  --sans: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);

  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.55;
  color: var(--texto);
  background-color: var(--negro);
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, p { margin: 0; }
h1, h2, h3 { font-family: var(--serif); font-weight: 400; color: var(--blanco); text-wrap: balance; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; }
button, input { font: inherit; color: inherit; }
/* Tocar rápido un botón (ej. + + en cantidad) no hace zoom en el celular; el zoom con dos dedos sigue andando */
button, a, summary, label, [role='button'] { touch-action: manipulation; }
::selection { background: var(--brasa-honda); color: #fff; }
:focus-visible { outline: 2px solid var(--brasa-clara); outline-offset: 3px; border-radius: 6px; }
[hidden] { display: none !important; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

.pagina {
  width: 100%;
  max-width: 28rem;
  margin: 0 auto;
  padding: max(1.25rem, env(safe-area-inset-top)) 1rem max(2rem, env(safe-area-inset-bottom));
}

/* Marca */
.marca { display: grid; justify-items: center; gap: 0.5rem; padding: 0.75rem 0 1.5rem; text-decoration: none; }
.marca img { width: 6.5rem; height: auto; }
.marca__sub {
  font-size: 0.6875rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--tenue);
}

/* ---------- Tarjeta ---------- */
.tarjeta {
  position: relative;
  overflow: hidden;
  padding: 1.5rem 1.25rem 1.5rem;
  border: 1px solid var(--borde);
  border-radius: 1.25rem;
  background:
    linear-gradient(155deg, rgba(255, 255, 255, 0.05), transparent 38%),
    linear-gradient(180deg, var(--carbon), #0e0e0e);
  box-shadow: 0 24px 48px -24px rgba(0, 0, 0, 0.9), inset 0 1px 0 rgba(255, 255, 255, 0.06);
}
.tarjeta::after {             /* filete grabado, tornasolado en tonos fuego */
  content: '';
  position: absolute;
  inset: 0.5rem;
  padding: 1px;
  border-radius: 0.875rem;
  background: conic-gradient(from calc(var(--giro) + var(--giro-mano, 0deg)),
    rgba(255, 255, 255, 0.06), rgba(194, 50, 27, 0.55), rgba(255, 122, 47, 0.7),
    rgba(255, 216, 168, 0.75), rgba(255, 255, 255, 0.06) 40%, rgba(255, 255, 255, 0.06) 60%,
    rgba(255, 122, 47, 0.55), rgba(255, 216, 168, 0.6), rgba(255, 255, 255, 0.06));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#000 0 0) content-box exclude, linear-gradient(#000 0 0);
  opacity: 0.7;
  pointer-events: none;
  animation: girar-filete 16s linear infinite;
}
@property --giro { syntax: '<angle>'; inherits: false; initial-value: 0deg; }
@keyframes girar-filete { to { --giro: 360deg; } }

.tarjeta::before {            /* reflejo de luz que cruza cada tanto */
  content: '';
  position: absolute;
  inset: 0;
  z-index: 2;
  border-radius: inherit;
  background: linear-gradient(105deg, transparent 42%, rgba(255, 238, 214, 0.05) 47%,
    rgba(255, 238, 214, 0.11) 50%, rgba(255, 238, 214, 0.05) 53%, transparent 58%);
  background-size: 300% 100%;
  background-position: 120% 0;
  mix-blend-mode: screen;
  pointer-events: none;
  animation: reflejo 9s var(--ease) 1.5s infinite;
}
@keyframes reflejo {
  0% { background-position: 120% 0; }
  22%, 100% { background-position: -20% 0; }
}

.tarjeta__cabeza { display: flex; align-items: flex-start; justify-content: space-between; gap: 1rem; }
.tarjeta__nombre { font-size: 1.625rem; line-height: 1.15; }
.tarjeta__tel { margin-top: 0.25rem; font-size: 0.8125rem; color: var(--apagado); font-variant-numeric: tabular-nums; }
.contador { text-align: right; flex-shrink: 0; }
.contador__num {
  font-family: var(--serif);
  font-size: 2.75rem;
  line-height: 1;
  color: var(--blanco);
  font-variant-numeric: tabular-nums;
}
.contador__de { font-size: 0.75rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--tenue); }

/* Brasas: 2 filas de 5 */
.brasas {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1.1rem 0.6rem;
  margin: 1.75rem 0 1.25rem;
  padding: 0;
  list-style: none;
}
.brasa { display: grid; justify-items: center; gap: 0.4rem; }
.brasa__piedra {
  position: relative;
  width: 100%;
  max-width: 3.4rem;
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #262626, #121212 70%);
  border: 1px solid var(--borde);
  box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.8);
  display: grid;
  place-items: center;
  color: var(--apagado);
  font-size: 0.8125rem;
  font-variant-numeric: tabular-nums;
  transition: border-color 0.6s;
}
.brasa__piedra::before {      /* el fuego */
  content: '';
  position: absolute;
  inset: 12%;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 60%, var(--brasa-clara) 0%, var(--brasa) 35%, var(--brasa-honda) 70%, transparent 74%);
  opacity: 0;
  transform: scale(0.4);
  filter: blur(0.5px);
  transition: opacity 0.7s var(--ease), transform 0.9s var(--ease);
}
.brasa.is-lit .brasa__piedra { border-color: rgba(255, 122, 47, 0.45); color: transparent; }
.brasa__piedra::after {       /* brillo tornasol sobre la brasa encendida */
  content: '';
  position: absolute;
  inset: 12%;
  border-radius: 50%;
  background: conic-gradient(from var(--giro), transparent, rgba(255, 216, 168, 0.55), transparent 30%,
    rgba(255, 90, 60, 0.45), transparent 60%, rgba(255, 200, 120, 0.5), transparent 85%);
  mix-blend-mode: overlay;
  opacity: 0;
  transition: opacity 0.7s var(--ease);
  pointer-events: none;
}
.brasa.is-lit .brasa__piedra::after {
  opacity: 1;
  animation: girar-filete 7s linear infinite;
  animation-delay: calc(var(--i, 0) * -0.9s);
}
.brasa.is-lit .brasa__piedra::before {
  opacity: 1;
  transform: scale(1);
  animation: titilar 3.2s ease-in-out infinite alternate;
  animation-delay: calc(var(--i, 0) * -0.37s);
}
.brasa__hito {
  font-size: 0.625rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--apagado);
  min-height: 0.9rem;
  text-align: center;
  line-height: 1.2;
}
.brasa--hito .brasa__piedra { border-style: dashed; border-color: #3a3a3a; }
.brasa--hito.is-lit .brasa__piedra { border-style: solid; }
.brasa--hito .brasa__hito { color: var(--tenue); }

@keyframes titilar {
  0% { filter: blur(0.5px) brightness(0.92); transform: scale(0.97); }
  100% { filter: blur(0.5px) brightness(1.12); transform: scale(1.02); }
}
@keyframes encender {
  0% { opacity: 0; transform: scale(0.2); filter: blur(4px) brightness(2); }
  60% { opacity: 1; transform: scale(1.18); filter: blur(1px) brightness(1.6); }
  100% { opacity: 1; transform: scale(1); filter: blur(0.5px) brightness(1); }
}
.brasa.is-new .brasa__piedra::before { animation: encender 1.1s var(--ease) both, titilar 3.2s 1.1s ease-in-out infinite alternate; }

/* Festejo del 4: llamarada roja momentánea sobre la brasa */
.llama {
  position: absolute;
  left: 50%;
  bottom: 18%;
  z-index: 2;
  width: 150%;
  aspect-ratio: 2 / 3;
  transform-origin: 50% 100%;
  pointer-events: none;
  animation: llamarada 1.7s 0.55s var(--ease) both;
}
.llama svg { display: block; width: 100%; height: 100%; overflow: visible; }
.llama__fuera { fill: #b3160b; opacity: 0.9; }
.llama__medio { fill: #e8261b; transform-origin: 50% 100%; animation: flamear 0.18s ease-in-out infinite alternate; }
.llama__nucleo { fill: #ff8a5c; }
@keyframes llamarada {
  0%   { opacity: 0; transform: translateX(-50%) scale(0.3, 0.15); filter: blur(2px); }
  16%  { opacity: 1; transform: translateX(-50%) scale(1.05, 1.15); filter: blur(0); }
  32%  { transform: translateX(-50%) scale(0.92, 1); }
  48%  { transform: translateX(-50%) scale(1.04, 1.1); }
  68%  { opacity: 1; transform: translateX(-50%) scale(0.96, 1); }
  100% { opacity: 0; transform: translateX(-50%) translateY(-12%) scale(0.5, 1.25); filter: blur(3px); }
}
@keyframes flamear {
  from { transform: scale(0.94, 1); }
  to   { transform: scale(1.04, 1.08); }
}
/* Festejo del 10: el jefe en píxeles ofrece el premio */
.festejo {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 0.75rem;
  padding: 1.5rem;
  text-align: center;
  background: radial-gradient(60% 40% at 50% 40%, rgba(194, 50, 27, 0.32), transparent 70%), rgba(11, 11, 11, 0.95);
  animation: festejo-entra 0.25s var(--ease) both;
}
.festejo.is-saliendo { opacity: 0; transition: opacity 0.18s ease-out; }
@keyframes festejo-entra { from { opacity: 0; } }
.festejo__escena {
  display: grid;
  justify-items: center;
  width: 100vw;
  padding-bottom: 0.5rem;
  overflow: hidden;
}
.festejo__jefe {
  position: relative;
  width: 210px;     /* 70 × 86 píxeles del dibujo, ×3 */
  height: 258px;
  background: url('/tarjeta/jefe.png') 0 0 / 500% 100% no-repeat;
  image-rendering: pixelated;
}
.festejo__jefe::after {   /* sombra en el piso */
  content: '';
  position: absolute;
  left: 22%;
  right: 22%;
  bottom: -5px;
  height: 8px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.6);
}
.festejo__titulo { margin: 0.5rem 0 0; font-family: var(--serif); font-size: 1.875rem; font-weight: 400; color: var(--blanco); }
.festejo__texto { margin: 0 0 0.75rem; color: var(--tenue); }
.festejo .festejo__boton { width: auto; min-width: 12rem; }
.festejo__titulo,
.festejo__texto,
.festejo__boton {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.4s var(--ease), transform 0.4s var(--ease);
}
.festejo.is-ofrece .festejo__titulo,
.festejo.is-ofrece .festejo__texto,
.festejo.is-ofrece .festejo__boton { opacity: 1; transform: none; }
.festejo.is-ofrece .festejo__texto { transition-delay: 80ms; }
.festejo.is-ofrece .festejo__boton { transition-delay: 160ms; }

.brasa.is-festejo .brasa__hito { animation: hito-rojo 2.2s 0.55s ease-out both; }
@keyframes hito-rojo {
  0%, 100% { color: var(--tenue); }
  20%, 70% { color: #ff5a3c; }
}

.tarjeta__pie {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--linea);
  font-size: 0.8125rem;
  color: var(--tenue);
}
.tarjeta__pie strong { color: var(--texto); font-weight: 500; }
.vence--pronto strong { color: var(--brasa-clara); }

/* Bloques debajo de la tarjeta */
.bloque { margin-top: 1.5rem; }
.bloque__titulo {
  font-family: var(--sans);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--tenue);
  margin-bottom: 0.75rem;
}

.aviso {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  padding: 0.875rem 1rem;
  border: 1px solid rgba(255, 122, 47, 0.35);
  border-radius: 0.875rem;
  background: rgba(255, 122, 47, 0.07);
  font-size: 0.875rem;
  color: var(--texto);
  margin-top: 1rem;
}

.premios { display: grid; gap: 0.625rem; padding: 0; margin: 0; list-style: none; }
.premio {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  padding: 0.875rem 1rem;
  border: 1px solid var(--borde);
  border-radius: 0.875rem;
  background: var(--carbon);
}
.premio__icono {
  flex-shrink: 0;
  width: 2.25rem; height: 2.25rem;
  display: grid; place-items: center;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 60%, var(--brasa-clara), var(--brasa) 45%, var(--brasa-honda) 80%);
  color: #2a0c05;
}
.premio__icono svg { width: 1.1rem; height: 1.1rem; }
.premio__texto { display: grid; gap: 0.1rem; }
.premio__titulo { color: var(--blanco); font-weight: 500; }
.premio__detalle { font-size: 0.8125rem; color: var(--tenue); }
.premio--canjeado { opacity: 0.55; }
.premio--canjeado .premio__icono { background: var(--ceniza); color: var(--tenue); }

/* Código QR */
.qr {
  display: grid;
  justify-items: center;
  gap: 0.875rem;
  padding: 1.25rem;
  border: 1px solid var(--borde);
  border-radius: 1.25rem;
  background: var(--carbon);
  text-align: center;
}
.qr__lienzo {
  width: min(15rem, 70vw);
  aspect-ratio: 1;
  padding: 0.875rem;
  border-radius: 0.875rem;
  background: #fff;
}
.qr__lienzo svg { width: 100%; height: 100%; }
.qr p { font-size: 0.875rem; color: var(--tenue); }

/* Instalar */
.instalar {
  display: flex;
  gap: 0.875rem;
  align-items: center;
  padding: 1rem;
  border: 1px dashed #3a3a3a;
  border-radius: 1rem;
  font-size: 0.875rem;
  color: var(--tenue);
}
.instalar strong { color: var(--texto); font-weight: 500; }

/* Botones y formularios */
.boton {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
  min-height: 3.25rem;
  padding: 0.875rem 1.5rem;
  border: 1px solid var(--blanco);
  border-radius: 999px;
  background: var(--blanco);
  color: #0b0b0b;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.2s var(--ease), background-color 0.2s, opacity 0.2s;
}
.boton:hover { background: #fff; }
.boton:active { transform: scale(0.98); }
.boton:disabled { opacity: 0.55; cursor: progress; }
.boton--linea { background: transparent; color: var(--blanco); border-color: #4a4a4a; }
.boton--linea:hover { background: rgba(255, 255, 255, 0.05); }

.form { display: grid; gap: 1.125rem; }
.campo { display: grid; gap: 0.4rem; }
.campo label, .campo__label { font-size: 0.875rem; font-weight: 500; color: var(--texto); }
.campo input[type='text'], .campo input[type='tel'] {
  width: 100%;
  min-height: 3.25rem;
  padding: 0.75rem 1rem;
  border: 1px solid var(--borde);
  border-radius: 0.75rem;
  background: var(--carbon);
  color: var(--blanco);
  font-size: 1.0625rem;
  caret-color: var(--brasa);
  transition: border-color 0.2s;
}
.campo input::placeholder { color: var(--apagado); }
.campo input:focus { outline: none; border-color: var(--blanco); }
.campo input[aria-invalid='true'] { border-color: var(--error); }
.campo__ayuda { font-size: 0.8125rem; color: var(--apagado); }
.campo__error { font-size: 0.8125rem; color: var(--error); }

.check {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.75rem;
  align-items: start;
  font-size: 0.875rem;
  color: var(--tenue);
  cursor: pointer;
}
.check input {
  appearance: none;
  width: 1.375rem; height: 1.375rem;
  margin: 0.05rem 0 0;
  border: 1.5px solid #555;
  border-radius: 0.375rem;
  background: var(--carbon);
  display: grid;
  place-items: center;
  cursor: pointer;
}
.check input::after {
  content: '';
  width: 0.4rem; height: 0.75rem;
  border: solid #0b0b0b;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg) scale(0);
  margin-top: -0.15rem;
  transition: transform 0.2s var(--ease);
}
.check input:checked { background: var(--blanco); border-color: var(--blanco); }
.check input:checked::after { transform: rotate(45deg) scale(1); }

.acciones-tarjeta { display: grid; gap: 0.75rem; margin-top: 1.5rem; }

.trampa { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.mensaje-error {
  padding: 0.875rem 1rem;
  border: 1px solid rgba(255, 138, 122, 0.4);
  border-radius: 0.75rem;
  background: rgba(255, 138, 122, 0.08);
  color: var(--error);
  font-size: 0.875rem;
}

.legal { font-size: 0.75rem; color: var(--apagado); text-align: center; line-height: 1.6; }
.legal a { color: var(--tenue); text-underline-offset: 3px; }

/* Cerrar sesión: discreto, con confirmación */
.salir { text-align: center; padding-bottom: 1rem; }
.salir__enlace {
  min-height: 2.75rem;
  padding: 0 1rem;
  border: 0;
  background: none;
  color: var(--tenue);
  font: inherit;
  font-size: 0.875rem;
  text-decoration: underline;
  text-underline-offset: 3px;
  cursor: pointer;
}
.salir__enlace:hover { color: var(--blanco); }
.salir__confirmar {
  padding: 1.25rem;
  border: 1px solid var(--borde);
  border-radius: 1.25rem;
  background: var(--carbon);
}
.salir__confirmar p { margin: 0; color: var(--texto); font-size: 0.9375rem; line-height: 1.5; }
.salir__confirmar .acciones-tarjeta { margin-top: 1rem; }

.intro { text-align: center; display: grid; gap: 0.5rem; margin-bottom: 1.75rem; }
.intro h1 { font-size: 2rem; }
.intro p { color: var(--tenue); }

.reglas-mini {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
  margin: 0 0 1.75rem;
  padding: 0;
  list-style: none;
  text-align: center;
}
.reglas-mini li {
  padding: 0.875rem 0.5rem;
  border: 1px solid var(--borde);
  border-radius: 0.875rem;
  font-size: 0.75rem;
  color: var(--tenue);
}
.reglas-mini strong { display: block; font-family: var(--serif); font-size: 1.375rem; font-weight: 400; color: var(--blanco); }

.cargando { display: grid; place-items: center; min-height: 50vh; color: var(--tenue); font-size: 0.875rem; }

@media (prefers-reduced-motion: reduce) {
  .brasa.is-lit .brasa__piedra::before,
  .brasa.is-new .brasa__piedra::before { animation: none; }
  .brasa__piedra::before { transition: opacity 0.3s; transform: none; }
  .festejo__titulo, .festejo__texto, .festejo__boton { transform: none; }
  .tarjeta::after, .brasa.is-lit .brasa__piedra::after { animation: none; }
  .tarjeta::before { display: none; }
}