/* ============================================================
   CALCULADORA DE TASAS — página propia
   Cada tasa tiene su color, para poder distinguirlas de un
   vistazo sin leer las etiquetas.
   ============================================================ */

:root {
  --calc-fondo: #0a0b0f;
  --calc-superficie: #14161d;
  --calc-superficie-alta: #1b1e27;
  --calc-borde: rgba(255, 255, 255, 0.07);
  --calc-borde-fuerte: rgba(255, 255, 255, 0.14);
  --calc-texto: #e8e9ee;
  --calc-texto-suave: #9aa0ae;
  --calc-texto-tenue: #626878;

  --calc-usd: #5b93ff;
  --calc-eur: #f5b544;
  --calc-usdt: #2ecc71;

  --calc-radio: 18px;
  --calc-radio-sm: 12px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  /* dvh y no vh: en Safari de iPhone el 100vh cuenta la barra de direcciones
     que luego se retrae, así que el fondo se cortaba al hacer scroll */
  min-height: 100vh;
  min-height: 100dvh;
  background:
    radial-gradient(ellipse 70% 50% at 50% -10%, rgba(91, 147, 255, 0.10), transparent 70%),
    radial-gradient(ellipse 60% 40% at 90% 100%, rgba(46, 204, 113, 0.07), transparent 70%),
    var(--calc-fondo);
  color: var(--calc-texto);
  font-family: var(--font-sans, 'Inter', system-ui, sans-serif);
  -webkit-font-smoothing: antialiased;
}

.calc {
  max-width: 30rem;
  margin: 0 auto;
  padding: 2rem 1.25rem 3rem;
}

/* ---------- Cabecera ---------- */
.calc-volver {
  display: inline-block;
  margin-bottom: 1.75rem;
  color: var(--calc-texto-tenue);
  font-size: 0.8rem;
  text-decoration: none;
  transition: color 0.2s;
}

.calc-volver:hover { color: var(--calc-texto-suave); }

.calc-head h1 {
  margin: 0;
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.calc-sub {
  margin: 0.35rem 0 1.75rem;
  color: var(--calc-texto-tenue);
  font-size: 0.9rem;
}

/* ---------- Las tres tasas ---------- */
.calc-tasas {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.6rem;
  margin-bottom: 1.25rem;
}

.tasa {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  padding: 0.7rem 0.7rem 0.75rem;
  border-radius: var(--calc-radio-sm);
  background: var(--calc-superficie);
  border: 1px solid var(--calc-borde);
  overflow: hidden;
}

/* La franja de color identifica cada tasa */
.tasa::before {
  content: '';
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: var(--calc-usd);
}

.calc-tasas .tasa:nth-child(2)::before { background: var(--calc-eur); }
.calc-tasas .tasa:nth-child(3)::before { background: var(--calc-usdt); }

.tasa-nombre {
  font-size: 0.66rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--calc-texto-tenue);
}

.tasa-valor {
  font-family: var(--mono, monospace);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

/* El p2p late, porque se mueve durante el dia */
.tasa-viva .tasa-nombre::after {
  content: '';
  display: inline-block;
  width: 5px;
  height: 5px;
  margin-left: 0.35rem;
  border-radius: 50%;
  background: var(--calc-usdt);
  animation: latido 2.4s ease-in-out infinite;
  vertical-align: middle;
}

@keyframes latido {
  0%, 100% { opacity: 0.25; }
  50% { opacity: 1; }
}

/* ---------- Panel principal ---------- */
.calc-panel {
  padding: 1.1rem;
  border-radius: var(--calc-radio);
  background: var(--calc-superficie);
  border: 1px solid var(--calc-borde);
}

/* Pestañas */
.calc-modos {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.2rem;
  padding: 0.25rem;
  border-radius: var(--calc-radio-sm);
  background: rgba(0, 0, 0, 0.3);
}

.calc-modo {
  padding: 0.6rem 0.25rem;
  border: 0;
  border-radius: 9px;
  background: transparent;
  color: var(--calc-texto-tenue);
  font-family: inherit;
  font-size: 0.72rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.18s ease;
}

.calc-modo:hover { color: var(--calc-texto-suave); }

.calc-modo.is-active {
  background: var(--calc-superficie-alta);
  color: var(--calc-texto);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.06) inset, 0 4px 12px rgba(0, 0, 0, 0.35);
}

.calc-pregunta {
  margin: 1rem 0 0.75rem;
  font-size: 0.82rem;
  color: var(--calc-texto-suave);
  text-align: center;
}

/* Monto */
.calc-monto {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.9rem 1.1rem;
  border-radius: var(--calc-radio-sm);
  background: rgba(0, 0, 0, 0.28);
  border: 1px solid var(--calc-borde);
  transition: border-color 0.2s;
}

.calc-monto:focus-within { border-color: var(--calc-borde-fuerte); }

.calc-monto-signo {
  font-family: var(--mono, monospace);
  font-size: 1.5rem;
  color: var(--calc-texto-tenue);
}

.calc-monto input {
  flex: 1;
  min-width: 0;
  border: 0;
  background: transparent;
  color: var(--calc-texto);
  font-family: var(--mono, monospace);
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  outline: none;
}

.calc-monto input::placeholder { color: var(--calc-texto-tenue); }

/* Borrar de un toque: en el móvil, vaciar la caja a base de retroceso es
   media docena de pulsaciones */
.calc-borrar {
  flex-shrink: 0;
  width: 1.9rem;
  height: 1.9rem;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: rgba(128, 128, 128, 0.16);
  color: var(--calc-texto-suave);
  font-family: inherit;
  font-size: 1.05rem;
  line-height: 1;
  cursor: pointer;
  transition: background 0.18s ease, color 0.18s ease;
}

.calc-borrar:hover {
  background: rgba(128, 128, 128, 0.28);
  color: var(--calc-texto);
}

/* El resumen es solo para el lector de pantalla: en la lista de resultados,
   el aria-live releía las cuatro filas en cada tecla */
.calc-resumen {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.calc-sinjs {
  margin: 0 0 1.25rem;
  padding: 0.9rem 1.1rem;
  border-radius: var(--calc-radio-sm);
  background: var(--calc-superficie);
  border: 1px solid var(--calc-borde);
  color: var(--calc-texto-suave);
  font-size: 0.85rem;
}

/* Montos rapidos */
.calc-rapidos {
  display: flex;
  gap: 0.35rem;
  margin: 0.7rem 0 1.1rem;
}

.calc-rapidos button {
  flex: 1;
  padding: 0.45rem 0;
  border-radius: 8px;
  border: 1px solid var(--calc-borde);
  background: transparent;
  color: var(--calc-texto-tenue);
  font-family: var(--mono, monospace);
  font-size: 0.75rem;
  cursor: pointer;
  transition: all 0.18s ease;
}

.calc-rapidos button:hover {
  border-color: var(--calc-borde-fuerte);
  color: var(--calc-texto);
}

/* ---------- Resultados ---------- */
.calc-resultados {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  min-height: 3rem;
}

.calc-vacio {
  margin: 0;
  padding: 1.25rem 0;
  text-align: center;
  color: var(--calc-texto-tenue);
  font-size: 0.85rem;
}

.res {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  width: 100%;
  padding: 0.85rem 1rem 0.85rem 1.15rem;
  border-radius: var(--calc-radio-sm);
  border: 1px solid var(--calc-borde);
  background: var(--calc-superficie-alta);
  color: inherit;
  font-family: inherit;
  text-align: left;
  cursor: pointer;
  overflow: hidden;
  transition: transform 0.15s ease, border-color 0.2s ease;
}

.res::before {
  content: '';
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: var(--color-res, var(--calc-texto-tenue));
}

.res:hover {
  transform: translateY(-1px);
  border-color: var(--calc-borde-fuerte);
}

.res:active { transform: translateY(0); }

.res-info {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  min-width: 0;
}

.res-nombre {
  font-size: 0.85rem;
  font-weight: 500;
}

.res-nota {
  font-family: var(--mono, monospace);
  font-size: 0.66rem;
  color: var(--calc-texto-tenue);
}

.res-valor {
  display: flex;
  align-items: baseline;
  gap: 0.3rem;
  font-family: var(--mono, monospace);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-res, var(--calc-texto));
  white-space: nowrap;
}

.res-unidad {
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--calc-texto-tenue);
}

/* Al copiar, el aviso ocupa el renglon de la nota: asi el numero no se mueve */
.res.is-copiado {
  border-color: var(--color-res, var(--calc-usdt));
}

.res.is-copiado .res-nota {
  font-size: 0;
}

.res.is-copiado .res-nota::after {
  content: 'copiado';
  font-size: 0.66rem;
  letter-spacing: 0.06em;
  color: var(--color-res, var(--calc-usdt));
}

/* ---------- Pie ---------- */
.calc-pie {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 1.1rem;
  padding: 0 0.25rem;
  font-size: 0.72rem;
  color: var(--calc-texto-tenue);
}

.calc-refrescar {
  padding: 0.4rem 0.8rem;
  border-radius: 8px;
  border: 1px solid var(--calc-borde);
  background: transparent;
  color: var(--calc-texto-suave);
  font-family: inherit;
  font-size: 0.72rem;
  cursor: pointer;
  transition: all 0.18s ease;
}

.calc-refrescar:hover {
  border-color: var(--calc-borde-fuerte);
  color: var(--calc-texto);
}

.calc-refrescar:disabled { opacity: 0.5; cursor: default; }

/* Cuando la red falla, las tasas se quedan en pantalla pero el pie lo dice:
   una cifra vieja sin avisar es peor que no tenerla */
.calc-pie .is-viejo { color: var(--calc-eur); }

/* Foco visible en todo lo que se puede tocar. Sin esto, moverse con el
   teclado por la app era ir a ciegas: el outline por defecto se pierde
   sobre el fondo oscuro. */
.calc :is(a, button, input):focus-visible {
  outline: 2px solid var(--calc-usd);
  outline-offset: 2px;
  border-radius: 6px;
}

@media (max-width: 380px) {
  .calc-modo { font-size: 0.65rem; }
  .calc-monto input { font-size: 1.7rem; }
}

/* ============================================================
   PANEL DE FUENTES
   ============================================================ */

.calc-pie-botones {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.4rem;
}

.calc-ajustes {
  margin-top: 0.9rem;
  padding: 1.1rem;
  border-radius: var(--calc-radio);
  background: var(--calc-superficie);
  border: 1px solid var(--calc-borde);
  animation: aparecer 0.25s ease;
}

@keyframes aparecer {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: none; }
}

.calc-ajustes-cabecera h2 {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
}

.calc-ajustes-cabecera p {
  margin: 0.25rem 0 1rem;
  font-size: 0.78rem;
  color: var(--calc-texto-tenue);
}

.calc-grupo h3 {
  margin: 0 0 0.5rem;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--calc-texto-tenue);
}

.calc-grupo + .calc-grupo { margin-top: 1.1rem; }

.calc-fuentes {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.fuente {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  width: 100%;
  padding: 0.7rem 0.85rem;
  border-radius: var(--calc-radio-sm);
  border: 1px solid var(--calc-borde);
  background: var(--calc-superficie-alta);
  color: inherit;
  font-family: inherit;
  text-align: left;
  cursor: pointer;
  transition: border-color 0.18s ease, background 0.18s ease;
}

.fuente:hover { border-color: var(--calc-borde-fuerte); }

.fuente.is-elegida {
  border-color: var(--calc-usdt);
  background: rgba(46, 204, 113, 0.08);
}

.fuente-info {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  min-width: 0;
}

.fuente-nombre {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.82rem;
  font-weight: 500;
}

.fuente-marca {
  font-size: 0.55rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--calc-usdt);
}

.fuente-detalle {
  font-size: 0.66rem;
  line-height: 1.35;
  color: var(--calc-texto-tenue);
}

.fuente-valor {
  flex-shrink: 0;
  text-align: right;
}

.fuente-tasa {
  display: block;
  font-family: var(--mono, monospace);
  font-size: 0.95rem;
  font-weight: 700;
}

.fuente-fecha {
  display: block;
  font-size: 0.6rem;
  color: var(--calc-texto-tenue);
}

.fuente-caida .fuente-tasa {
  font-size: 0.7rem;
  font-weight: 500;
  color: #e05c5c;
}

.fuente:disabled { opacity: 0.55; cursor: not-allowed; }

.calc-restablecer {
  width: 100%;
  margin-top: 1.1rem;
  padding: 0.6rem;
  border-radius: var(--calc-radio-sm);
  border: 1px solid var(--calc-borde);
  background: transparent;
  color: var(--calc-texto-tenue);
  font-family: inherit;
  font-size: 0.75rem;
  cursor: pointer;
  transition: all 0.18s ease;
}

.calc-restablecer:hover {
  border-color: var(--calc-borde-fuerte);
  color: var(--calc-texto);
}

/* ---------- Historial ---------- */

.calc-historial {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  max-height: 22rem;
  overflow-y: auto;
}

.hist {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  width: 100%;
  padding: 0.65rem 0.85rem;
  border-radius: var(--calc-radio-sm);
  border: 1px solid var(--calc-borde);
  background: var(--calc-superficie-alta);
  color: inherit;
  font-family: inherit;
  text-align: left;
  cursor: pointer;
  transition: border-color 0.18s ease;
}

.hist:hover { border-color: var(--calc-borde-fuerte); }

.hist-izq {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  min-width: 0;
}

.hist-operacion {
  font-family: var(--mono, monospace);
  font-size: 0.82rem;
}

.hist-cuando {
  font-size: 0.62rem;
  color: var(--calc-texto-tenue);
}

.hist-der {
  flex-shrink: 0;
  text-align: right;
}

.hist-valor {
  display: block;
  font-family: var(--mono, monospace);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-res, var(--calc-texto));
}

.hist-tasa {
  display: block;
  font-size: 0.6rem;
  color: var(--calc-texto-tenue);
}

.calc-historial-vacio {
  padding: 1.25rem 0;
  text-align: center;
  font-size: 0.8rem;
  color: var(--calc-texto-tenue);
}

/* Sello de versión: para saber qué está corriendo una app ya instalada,
   que es imposible de adivinar desde fuera */
.calc-version {
  font-family: var(--mono, monospace);
  font-size: 0.6rem;
  color: var(--calc-texto-tenue);
  opacity: 0.5;
}

.calc-pie {
  flex-wrap: wrap;
}

/* ============================================================
   TEMAS
   Todo el diseño sale de las mismas variables, así que un tema
   es solo otra lista de colores: no hay que tocar nada más.
   ============================================================ */

/* ---------- Claro ---------- */
:root[data-tema="claro"] {
  --calc-fondo: #f4f6fa;
  --calc-superficie: #ffffff;
  --calc-superficie-alta: #ffffff;
  --calc-borde: rgba(16, 24, 40, 0.09);
  --calc-borde-fuerte: rgba(16, 24, 40, 0.2);
  --calc-texto: #101828;
  --calc-texto-suave: #475467;
  --calc-texto-tenue: #8a94a6;

  /* Más saturados y oscuros: sobre blanco, los del tema oscuro se lavan */
  --calc-usd: #2563eb;
  --calc-eur: #b45309;
  --calc-usdt: #15803d;
}

:root[data-tema="claro"] body {
  background:
    radial-gradient(ellipse 70% 50% at 50% -10%, rgba(37, 99, 235, 0.10), transparent 70%),
    radial-gradient(ellipse 60% 40% at 90% 100%, rgba(21, 128, 61, 0.07), transparent 70%),
    var(--calc-fondo);
}

:root[data-tema="claro"] .calc-panel,
:root[data-tema="claro"] .calc-ajustes,
:root[data-tema="claro"] .tasa {
  box-shadow: 0 1px 2px rgba(16, 24, 40, 0.05), 0 8px 24px -12px rgba(16, 24, 40, 0.12);
}

:root[data-tema="claro"] .calc-modos,
:root[data-tema="claro"] .calc-monto {
  background: rgba(16, 24, 40, 0.04);
}

:root[data-tema="claro"] .calc-modo.is-active {
  background: #ffffff;
  box-shadow: 0 1px 3px rgba(16, 24, 40, 0.12);
}

:root[data-tema="claro"] .res,
:root[data-tema="claro"] .fuente,
:root[data-tema="claro"] .hist {
  background: #ffffff;
}

/* ---------- Navidad ---------- */
:root[data-tema="navidad"] {
  --calc-fondo: #0b1410;
  --calc-superficie: #12201a;
  --calc-superficie-alta: #172a21;
  --calc-borde: rgba(232, 185, 58, 0.16);
  --calc-borde-fuerte: rgba(232, 185, 58, 0.4);
  --calc-texto: #f4ede0;
  --calc-texto-suave: #c3b8a4;
  --calc-texto-tenue: #8a8272;

  --calc-usd: #e8b93a;
  --calc-eur: #e5484d;
  --calc-usdt: #3fbf71;
}

:root[data-tema="navidad"] body {
  background:
    radial-gradient(ellipse 60% 45% at 15% -5%, rgba(229, 72, 77, 0.16), transparent 70%),
    radial-gradient(ellipse 60% 45% at 85% 5%, rgba(63, 191, 113, 0.14), transparent 70%),
    radial-gradient(ellipse 70% 40% at 50% 105%, rgba(232, 185, 58, 0.10), transparent 70%),
    var(--calc-fondo);
}

:root[data-tema="navidad"] .calc-head h1 {
  background: linear-gradient(100deg, #e5484d 0%, #f4ede0 45%, #3fbf71 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

:root[data-tema="navidad"] .calc-panel {
  border-color: rgba(232, 185, 58, 0.22);
  box-shadow: 0 0 40px -20px rgba(232, 185, 58, 0.5);
}

/* ---------- Botón y panel de temas ---------- */
.calc-temas {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
}

.tema {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.55rem;
  padding: 0.9rem 0.5rem;
  border-radius: var(--calc-radio-sm);
  border: 1px solid var(--calc-borde);
  background: var(--calc-superficie-alta);
  color: var(--calc-texto-suave);
  font-family: inherit;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: border-color 0.18s ease, transform 0.18s ease;
}

.tema:hover { transform: translateY(-2px); }

.tema.is-elegido {
  border-color: var(--calc-usdt);
  color: var(--calc-texto);
}

/* Una miniatura del tema, para elegir mirando y no leyendo */
.tema-muestra {
  display: flex;
  width: 100%;
  height: 34px;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid rgba(128, 128, 128, 0.18);
}

.tema-muestra span { flex: 1; }

.muestra-oscuro span:nth-child(1) { background: #0a0b0f; }
.muestra-oscuro span:nth-child(2) { background: #5b93ff; }
.muestra-oscuro span:nth-child(3) { background: #f5b544; }
.muestra-oscuro span:nth-child(4) { background: #2ecc71; }

.muestra-claro span:nth-child(1) { background: #f4f6fa; }
.muestra-claro span:nth-child(2) { background: #2563eb; }
.muestra-claro span:nth-child(3) { background: #b45309; }
.muestra-claro span:nth-child(4) { background: #15803d; }

.muestra-navidad span:nth-child(1) { background: #0b1410; }
.muestra-navidad span:nth-child(2) { background: #e5484d; }
.muestra-navidad span:nth-child(3) { background: #e8b93a; }
.muestra-navidad span:nth-child(4) { background: #3fbf71; }

/* ---------- Detalles del tema navideño ---------- */

/* Nieve: solo existe en navidad y solo si el sistema no pide quietud */
.nieve { display: none; }

:root[data-tema="navidad"] .nieve {
  display: block;
  position: fixed;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 0;
}

.nieve span {
  position: absolute;
  top: -12px;
  width: var(--tam);
  height: var(--tam);
  border-radius: 50%;
  background: #ffffff;
  opacity: 0;
  filter: blur(0.4px);
  animation: caer var(--dur) linear var(--espera) infinite;
}

@keyframes caer {
  0% { transform: translate(0, -12px); opacity: 0; }
  8% { opacity: 0.75; }
  92% { opacity: 0.4; }
  100% { transform: translate(var(--giro), 105vh); opacity: 0; }
}

/* Guirnalda de luces sobre el panel */
:root[data-tema="navidad"] .calc-panel { position: relative; }

:root[data-tema="navidad"] .calc-panel::before {
  content: '';
  position: absolute;
  top: 0;
  left: 14px;
  right: 14px;
  height: 14px;

  /* Un cable y, colgando, bombillas de 7px cada 14px. En pixeles y no en
     porcentaje: el radio porcentual se calcula sobre la baldosa y las dejaba
     pegadas, con aspecto de cinta en vez de guirnalda. */
  background-image:
    linear-gradient(rgba(232, 185, 58, 0.3), rgba(232, 185, 58, 0.3)),
    radial-gradient(circle 3.5px at 7px 9px, #e5484d 97%, transparent 100%),
    radial-gradient(circle 3.5px at 7px 9px, #e8b93a 97%, transparent 100%),
    radial-gradient(circle 3.5px at 7px 9px, #3fbf71 97%, transparent 100%);
  background-size:
    100% 1px,
    42px 14px,
    42px 14px,
    42px 14px;
  background-position:
    0 0,
    0 0,
    14px 0,
    28px 0;
  background-repeat: repeat-x;
  animation: guirnalda 3.5s ease-in-out infinite;
}

@keyframes guirnalda {
  0%, 100% { opacity: 0.6; filter: none; }
  50% { opacity: 1; filter: drop-shadow(0 0 5px rgba(232, 185, 58, 0.75)); }
}

/* Un poco de aire para que las bombillas no toquen las pestañas */
:root[data-tema="navidad"] .calc-panel { padding-top: 1.6rem; }

/* El título respira, como una vela */
:root[data-tema="navidad"] .calc-head h1 {
  background-size: 200% auto;
  animation: brilloNavideno 7s ease-in-out infinite;
}

@keyframes brilloNavideno {
  0%, 100% { background-position: 0% center; }
  50% { background-position: 100% center; }
}

/* Las tasas, con un halo cálido */
:root[data-tema="navidad"] .tasa {
  box-shadow: 0 0 24px -14px rgba(232, 185, 58, 0.9);
}

/* El punto del p2p late como una lucecita */
:root[data-tema="navidad"] .tasa-viva .tasa-nombre::after {
  box-shadow: 0 0 6px 1px rgba(63, 191, 113, 0.8);
}

@media (prefers-reduced-motion: reduce) {
  .nieve span,
  :root[data-tema="navidad"] .calc-panel::before,
  :root[data-tema="navidad"] .calc-head h1 {
    animation: none;
  }
  .nieve span { opacity: 0.5; }
}

/* ============================================================
   60 IQ
   El ayudante que te insulta y luego te hace la cuenta.
   ============================================================ */

.calc-60iq {
  font-family: var(--mono, monospace);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--calc-usdt);
  border-color: color-mix(in srgb, var(--calc-usdt) 35%, transparent);
}

.calc-60iq:hover {
  color: var(--calc-usdt);
  border-color: var(--calc-usdt);
}

.calc-60iq[aria-expanded="true"] {
  background: color-mix(in srgb, var(--calc-usdt) 12%, transparent);
  border-color: var(--calc-usdt);
}

.calc-iq-charla {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  max-height: 20rem;
  overflow-y: auto;
  margin-bottom: 0.7rem;
}

.calc-iq-ejemplos {
  margin: 0;
  font-size: 0.72rem;
  line-height: 1.9;
  color: var(--calc-texto-tenue);
}

.calc-iq-ejemplo {
  padding: 0.3rem 0.6rem;
  border-radius: 999px;
  border: 1px dashed var(--calc-borde-fuerte);
  background: transparent;
  color: var(--calc-texto-suave);
  font-family: inherit;
  font-size: 0.72rem;
  cursor: pointer;
  transition: border-color 0.18s ease, color 0.18s ease;
}

.calc-iq-ejemplo:hover {
  border-style: solid;
  border-color: var(--calc-usdt);
  color: var(--calc-texto);
}

.calc-iq-dice {
  margin: 0;
  padding: 0.6rem 0.8rem;
  border-radius: var(--calc-radio-sm);
  font-size: 0.82rem;
  line-height: 1.5;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

/* Lo que preguntas va a la derecha y apagado; lo que responde, a la izquierda
   y con su color, que es lo que se viene a leer */
.calc-iq-tu {
  align-self: flex-end;
  max-width: 85%;
  background: rgba(128, 128, 128, 0.14);
  color: var(--calc-texto-suave);
}

.calc-iq-iq {
  align-self: flex-start;
  max-width: 95%;
  background: var(--calc-superficie-alta);
  border: 1px solid var(--calc-borde);
  border-left: 3px solid var(--calc-usdt);
}

.calc-iq-iq.es-error { border-left-color: #e05c5c; }

.calc-iq-caja {
  display: flex;
  gap: 0.4rem;
}

.calc-iq-caja input {
  flex: 1;
  min-width: 0;
  padding: 0.6rem 0.8rem;
  border-radius: var(--calc-radio-sm);
  border: 1px solid var(--calc-borde);
  background: rgba(0, 0, 0, 0.22);
  color: var(--calc-texto);
  font-family: inherit;
  font-size: 0.82rem;
  outline: none;
}

.calc-iq-caja input:focus { border-color: var(--calc-borde-fuerte); }
.calc-iq-caja input::placeholder { color: var(--calc-texto-tenue); }

:root[data-tema="claro"] .calc-iq-caja input { background: rgba(16, 24, 40, 0.04); }

.calc-iq-caja button {
  flex-shrink: 0;
  padding: 0.6rem 0.9rem;
  border-radius: var(--calc-radio-sm);
  border: 1px solid var(--calc-usdt);
  background: color-mix(in srgb, var(--calc-usdt) 14%, transparent);
  color: var(--calc-usdt);
  font-family: inherit;
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.18s ease;
}

.calc-iq-caja button:hover { background: color-mix(in srgb, var(--calc-usdt) 24%, transparent); }
.calc-iq-caja button:disabled { opacity: 0.5; cursor: default; }

/* ---------- Zelle ---------- */

/* Cuatro tasas: en dos filas de dos, que en una sola no caben legibles */
.calc-tasas {
  grid-template-columns: repeat(2, 1fr);
}

@media (min-width: 560px) {
  .calc-tasas { grid-template-columns: repeat(4, 1fr); }
}

.calc-tasas .tasa:nth-child(4)::before { background: var(--calc-zelle); }

:root { --calc-zelle: #a855f7; }
:root[data-tema="claro"] { --calc-zelle: #7e22ce; }
:root[data-tema="navidad"] { --calc-zelle: #d98cff; }

/* ---------- Interruptor de aportar montos ---------- */

.calc-aportar { margin-top: 1.4rem; }

.calc-interruptor {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  padding: 0.7rem 0.85rem;
  border-radius: var(--calc-radio-sm);
  border: 1px solid var(--calc-borde);
  background: var(--calc-superficie-alta);
  cursor: pointer;
}

.calc-interruptor:hover { border-color: var(--calc-borde-fuerte); }

.calc-interruptor input {
  flex-shrink: 0;
  width: 1rem;
  height: 1rem;
  margin: 0.1rem 0 0;
  accent-color: var(--calc-usdt);
  cursor: pointer;
}

.calc-interruptor span {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  font-size: 0.8rem;
}

.calc-interruptor small {
  font-size: 0.66rem;
  line-height: 1.4;
  color: var(--calc-texto-tenue);
}

.calc-interruptor input:disabled,
.calc-interruptor input:disabled + span { opacity: 0.55; cursor: not-allowed; }