/* ---------- Reset & base ---------- */
* { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #130c26;
  --bg-2: #1b1338;
  --card: #1f1740;
  --card-2: #241c49;
  --text: #f5f3ff;
  --text-dim: #b6adda;
  --magenta: #ff3d81;
  --orange: #ffb020;
  --violet: #8b5cf6;
  --cian: #38e6d8;
  --ok: #33d17a;
  --error: #ff5c72;
  --radius: 18px;
  --radius-sm: 12px;
  --sombra: 0 10px 30px rgba(0,0,0,.35);
  --ease: cubic-bezier(.22,.9,.32,1);
}

html, body {
  height: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.fondo {
  position: fixed;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(circle at 15% 15%, rgba(255,61,129,.35), transparent 45%),
    radial-gradient(circle at 85% 20%, rgba(139,92,246,.35), transparent 50%),
    radial-gradient(circle at 50% 90%, rgba(56,230,216,.18), transparent 55%),
    var(--bg);
  pointer-events: none;
}

.app {
  position: relative;
  z-index: 1;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

/* ---------- Barra de progreso ---------- */
.barra-progreso {
  position: sticky;
  top: 0;
  z-index: 5;
  height: 5px;
  background: rgba(255,255,255,.08);
}

.barra-progreso__relleno {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--magenta), var(--orange));
  transition: width .35s var(--ease);
}

/* ---------- Contenedor del paso ---------- */
.paso {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(16px, 5vw, 40px);
}

.tarjeta {
  width: 100%;
  max-width: 480px;
  animation: entra .38s var(--ease);
}

@keyframes entra {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}

.tarjeta.saliendo {
  animation: sale .18s var(--ease) forwards;
}

@keyframes sale {
  to { opacity: 0; transform: translateY(-10px); }
}

.paso__etiqueta {
  display: inline-block;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--cian);
  background: rgba(56,230,216,.12);
  border: 1px solid rgba(56,230,216,.25);
  padding: 4px 10px;
  border-radius: 999px;
  margin-bottom: 16px;
}

h1.paso__titulo, h2.paso__titulo {
  font-size: clamp(1.4rem, 5vw, 1.9rem);
  line-height: 1.25;
  font-weight: 800;
  margin-bottom: 8px;
  letter-spacing: -.01em;
}

.paso__subtitulo {
  color: var(--text-dim);
  font-size: .98rem;
  margin-bottom: 24px;
  line-height: 1.5;
}

/* ---------- Opciones de elección ---------- */
.opciones {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.opciones--grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
}

.opcion {
  appearance: none;
  border: 1.5px solid rgba(255,255,255,.12);
  background: var(--card);
  color: var(--text);
  font-size: 1rem;
  font-weight: 600;
  text-align: left;
  padding: 16px 18px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  transition: transform .12s var(--ease), border-color .15s, background .15s;
  min-height: 54px;
  -webkit-tap-highlight-color: transparent;
}

.opcion:active {
  transform: scale(.98);
}

.opcion:hover {
  border-color: rgba(255,255,255,.28);
  background: var(--card-2);
}

.opcion.seleccionada {
  border-color: var(--magenta);
  background: linear-gradient(135deg, rgba(255,61,129,.18), rgba(139,92,246,.18));
  box-shadow: 0 0 0 1px rgba(255,61,129,.4) inset;
}

.opcion__check {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 1.5px solid rgba(255,255,255,.25);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.opcion.seleccionada .opcion__check {
  background: var(--magenta);
  border-color: var(--magenta);
}

.opcion__check svg {
  width: 12px;
  height: 12px;
  opacity: 0;
}

.opcion.seleccionada .opcion__check svg {
  opacity: 1;
}

/* ---------- Campos de texto / número ---------- */
.campo {
  width: 100%;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text);
  background: var(--card);
  border: 1.5px solid rgba(255,255,255,.12);
  border-radius: var(--radius-sm);
  padding: 16px 18px;
  outline: none;
  transition: border-color .15s;
}

.campo::placeholder {
  color: var(--text-dim);
  font-weight: 400;
}

.campo:focus {
  border-color: var(--violet);
}

.campo-error {
  color: var(--error);
  font-size: .85rem;
  margin-top: 8px;
  min-height: 1.2em;
}

/* ---------- Grupo de gastos ---------- */
.grupo-gasto {
  margin-bottom: 18px;
}

.grupo-gasto__titulo {
  font-size: .92rem;
  font-weight: 700;
  color: var(--text-dim);
  margin-bottom: 8px;
}

.segmentado {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 8px;
}

.segmentado .opcion {
  padding: 12px 8px;
  justify-content: center;
  text-align: center;
  font-size: .85rem;
  min-height: 46px;
}

.segmentado .opcion__check { display: none; }

/* ---------- Botones de navegación ---------- */
.acciones {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 24px;
}

.boton {
  appearance: none;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 700;
  padding: 15px 22px;
  cursor: pointer;
  transition: transform .12s var(--ease), opacity .15s;
  -webkit-tap-highlight-color: transparent;
}

.boton:active { transform: scale(.97); }

.boton--principal {
  flex: 1;
  color: #170a20;
  background: linear-gradient(90deg, var(--magenta), var(--orange));
  box-shadow: 0 8px 24px rgba(255,61,129,.28);
}

.boton--principal:disabled {
  opacity: .35;
  cursor: not-allowed;
  box-shadow: none;
}

.boton--fantasma {
  background: transparent;
  color: var(--text-dim);
  padding: 15px 14px;
}

.boton--fantasma:hover { color: var(--text); }

.enlace-atras {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-dim);
  background: none;
  border: none;
  font-size: .9rem;
  font-weight: 600;
  cursor: pointer;
  margin-bottom: 18px;
  padding: 6px 0;
}

.enlace-atras:hover { color: var(--text); }

/* ---------- Pantalla inicial / final ---------- */
.centro {
  text-align: center;
}

.icono-grande {
  font-size: 3.2rem;
  margin-bottom: 18px;
  filter: drop-shadow(0 0 18px rgba(255,176,32,.5));
}

.icono-grande--girando {
  display: inline-block;
  animation: girar 1.1s linear infinite;
}

@keyframes girar {
  to { transform: rotate(360deg); }
}

.oculto { display: none !important; }

/* ---------- Utilidades ---------- */
input[type=number]::-webkit-inner-spin-button,
input[type=number]::-webkit-outer-spin-button {
  opacity: 1;
}

@media (max-width: 380px) {
  .segmentado { grid-template-columns: 1fr; }
}