:root {
  --azul: #0040D5;
  --azul-oscuro: #0A2A8F;
  --azul-profundo: #061a5c;
  --amarillo: #FDDA02;
  --blanco: #ffffff;
  --tinta: #0b1633;
  --tinta-suave: #4a5578;
  --borde: #d6dcef;
  --error: #c62828;
  --ok: #0c8a3e;
  --display: "Archivo Black", "Arial Black", Impact, sans-serif;
  --texto: "Montserrat", system-ui, -apple-system, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--texto);
  color: var(--blanco);
  background: var(--azul);
  line-height: 1.5;
  overflow-x: hidden;
}

/* Patrón de fondo: yo-yos tenues, al estilo de los carteles FMAT */
.fondo {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(circle at 15% 20%, rgba(255,255,255,.07) 0 38px, transparent 39px),
    radial-gradient(circle at 15% 20%, rgba(255,255,255,.07) 0 14px, transparent 15px),
    radial-gradient(circle at 85% 35%, rgba(255,255,255,.06) 0 60px, transparent 61px),
    radial-gradient(circle at 70% 85%, rgba(253,218,2,.08) 0 46px, transparent 47px),
    radial-gradient(circle at 30% 75%, rgba(255,255,255,.05) 0 28px, transparent 29px),
    linear-gradient(160deg, var(--azul) 0%, #0037b8 60%, var(--azul-oscuro) 100%);
}

.encabezado {
  display: flex;
  justify-content: center;
  padding: 20px 16px 0;
}
.logo { width: 132px; height: auto; display: block; border-radius: 22px; box-shadow: 0 0 0 3px rgba(255,255,255,.18), 0 10px 30px rgba(0,0,0,.25); }

.contenedor {
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  padding: 12px 16px 40px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

/* ---------- Hero ---------- */
.hero { position: relative; text-align: center; }
.sobretitulo {
  display: inline-block;
  margin: 0 0 8px;
  padding: 4px 14px;
  border-radius: 999px;
  background: var(--amarillo);
  color: var(--azul-profundo);
  font-weight: 800;
  font-size: .8rem;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.titulo {
  margin: 0;
  font-family: var(--display);
  font-weight: 400;
  text-transform: uppercase;
  line-height: .95;
  font-size: clamp(2.6rem, 11vw, 5.2rem);
  letter-spacing: -.01em;
  text-shadow: 0 4px 0 rgba(0,0,0,.18);
}
.titulo span { display: block; }
.amarillo { color: var(--amarillo); }
.bajada {
  max-width: 34ch;
  margin: 14px auto 0;
  font-size: 1.05rem;
  font-weight: 600;
  color: rgba(255,255,255,.92);
}

.datos-evento {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0;
  margin: 20px auto 0;
  max-width: 480px;
}
.dato {
  flex: 1 1 140px;
  padding: 8px 16px;
  display: flex;
  flex-direction: column;
}
.dato + .dato { border-left: 3px solid rgba(255,255,255,.85); }
.dato-etiqueta {
  font-family: var(--display);
  color: var(--amarillo);
  text-transform: uppercase;
  font-size: 1.05rem;
  line-height: 1.1;
}
.dato-valor { font-weight: 700; font-size: .95rem; }

.yoyo { display: none; }

/* ---------- Tarjeta del formulario ---------- */
.tarjeta {
  background: var(--blanco);
  color: var(--tinta);
  border-radius: 20px;
  padding: 24px 20px;
  box-shadow: 0 0 0 4px var(--amarillo), 0 20px 50px rgba(0,0,0,.25);
}
.tarjeta h2 {
  margin: 0 0 4px;
  font-family: var(--display);
  font-weight: 400;
  font-size: 1.5rem;
  color: var(--azul);
  text-transform: uppercase;
}
.cuenta { margin: 0 0 18px; color: var(--tinta-suave); font-size: .92rem; }
.cuenta strong { color: var(--azul); }

.campo { margin-bottom: 16px; }
.campo label { display: block; font-weight: 700; font-size: .9rem; margin-bottom: 6px; }
.campo input[type=text],
.campo input[type=tel],
.campo input[type=number],
.campo select {
  width: 100%;
  font: inherit;
  font-size: 16px; /* evita el zoom automático en iOS */
  padding: 12px 14px;
  border: 2px solid var(--borde);
  border-radius: 12px;
  background: #f7f9ff;
  color: var(--tinta);
  transition: border-color .15s, box-shadow .15s;
}
.campo select { appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--azul) 50%), linear-gradient(135deg, var(--azul) 50%, transparent 50%); background-position: calc(100% - 20px) 50%, calc(100% - 14px) 50%; background-size: 6px 6px; background-repeat: no-repeat; padding-right: 40px; }
.campo input:focus, .campo select:focus {
  outline: none;
  border-color: var(--azul);
  box-shadow: 0 0 0 4px rgba(0,64,213,.15);
  background-color: #fff;
}
.campo [aria-invalid=true] { border-color: var(--error); background-color: #fff6f6; }
.campo-error { margin: 6px 0 0; color: var(--error); font-size: .85rem; font-weight: 600; }

.fila { display: grid; grid-template-columns: 1fr; gap: 0 14px; }

.campo-estimacion {
  background: var(--azul);
  border-radius: 16px;
  padding: 16px;
  color: #fff;
}
.campo-estimacion label { color: #fff; }
.campo-estimacion input[type=number] {
  font-family: var(--display);
  font-size: 2.4rem;
  text-align: center;
  padding: 8px;
  border-color: var(--amarillo);
  background: #fff;
  color: var(--azul);
  -moz-appearance: textfield;
}
.campo-estimacion input::-webkit-outer-spin-button,
.campo-estimacion input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.campo-estimacion .campo-error { color: var(--amarillo); }

.campo-check label { display: flex; gap: 10px; align-items: flex-start; font-weight: 500; font-size: .85rem; color: var(--tinta-suave); cursor: pointer; }
.campo-check input { width: 20px; height: 20px; margin: 1px 0 0; flex: none; accent-color: var(--azul); }

.boton {
  width: 100%;
  border: 0;
  border-radius: 14px;
  padding: 16px;
  font-family: var(--display);
  font-size: 1.15rem;
  text-transform: uppercase;
  color: var(--azul-profundo);
  background: var(--amarillo);
  box-shadow: 0 5px 0 #c9ad00;
  cursor: pointer;
  transition: transform .08s, box-shadow .08s;
}
.boton:hover { filter: brightness(1.04); }
.boton:active { transform: translateY(3px); box-shadow: 0 2px 0 #c9ad00; }
.boton:disabled { opacity: .7; cursor: progress; }
.boton:focus-visible { outline: 3px solid var(--azul); outline-offset: 3px; }

.nota { margin: 14px 0 0; font-size: .82rem; color: var(--tinta-suave); text-align: center; }

.alerta {
  margin-bottom: 16px;
  padding: 12px 14px;
  border-radius: 12px;
  background: #fdecec;
  color: var(--error);
  font-weight: 600;
}

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

/* ---------- Éxito / cerrado ---------- */
.exito, .cerrado { text-align: center; padding: 8px 0; }
.exito-icono {
  width: 64px; height: 64px;
  margin: 0 auto 12px;
  border-radius: 50%;
  display: grid; place-items: center;
  font-size: 2rem; font-weight: 800;
  background: var(--amarillo);
  color: var(--azul-profundo);
}
.exito-numero {
  margin: 8px 0;
  font-family: var(--display);
  font-size: 3.2rem;
  line-height: 1;
  color: var(--azul);
}
.exito-numero small { font-family: var(--texto); font-size: 1rem; font-weight: 700; color: var(--tinta-suave); }
.exito-folio { font-weight: 700; color: var(--tinta-suave); margin: 0; }

/* ---------- Reglas ---------- */
.reglas {
  background: rgba(6, 26, 92, .45);
  border: 2px solid rgba(255,255,255,.18);
  border-radius: 20px;
  padding: 20px;
}
.reglas h2 {
  margin: 0 0 8px;
  font-family: var(--display);
  font-weight: 400;
  text-transform: uppercase;
  color: var(--amarillo);
  font-size: 1.3rem;
}
.reglas ol { margin: 0; padding-left: 1.2em; }
.reglas li { margin: 8px 0; font-size: .95rem; }
.reglas strong { color: var(--amarillo); }

/* ---------- Pie ---------- */
.pie {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 8px 16px 32px;
  font-weight: 800;
  font-size: 1.05rem;
}
.pie b { color: var(--amarillo); }
.pie .linea { height: 3px; width: 40px; background: var(--amarillo); border-radius: 2px; }

/* ---------- Escritorio ---------- */
@media (min-width: 600px) {
  .fila { grid-template-columns: 1fr 1fr; }
  .tarjeta { padding: 32px; }
}

@media (min-width: 920px) {
  .contenedor {
    grid-template-columns: 1fr 460px;
    grid-template-areas: "hero tarjeta" "reglas tarjeta";
    align-items: start;
    gap: 28px 48px;
    padding-top: 24px;
  }
  .hero { grid-area: hero; text-align: left; padding-top: 12px; }
  .bajada { margin-left: 0; }
  .datos-evento { justify-content: flex-start; margin-left: 0; }
  .dato:first-child { padding-left: 0; }
  .tarjeta { grid-area: tarjeta; position: sticky; top: 24px; }
  .reglas { grid-area: reglas; }
  .yoyo {
    display: block;
    position: absolute;
    right: -8px;
    top: 96px;
    width: 128px;
    transform-origin: 100px 0;
  }
  .yoyo-cuerpo { animation: subebaja 3.2s ease-in-out infinite; transform-origin: 100px 160px; }
  .hilo { animation: hilo 3.2s ease-in-out infinite; }
}

@keyframes subebaja {
  0%, 100% { transform: translateY(0) rotate(0); }
  50% { transform: translateY(-40px) rotate(-200deg); }
}
@keyframes hilo {
  0%, 100% { d: path("M100 0 V78"); }
  50% { d: path("M100 0 V38"); }
}

@media (prefers-reduced-motion: reduce) {
  .yoyo-cuerpo, .hilo { animation: none; }
}