/* Variables de configuración del Sparkle */
.sparkle-button {
  --transition: 0.25s;
  --spark: 1.8s;
  /* CAMBIO DE COLOR: HUE 0 es Rojo, 355 es Rojo Cereza */
  --hue: 355; 
  position: relative;
}

/* El Botón Principal */
.sparkle-button button {
  --cut: 0.1em;
  --active: 0;
  --bg:
    radial-gradient(
      40% 50% at center 100%,
      hsl(var(--hue) calc(var(--active) * 97%) 72% / var(--active)),
      transparent
    ),
    radial-gradient(
      80% 100% at center 120%,
      hsl(var(--hue) calc(var(--active) * 97%) 70% / var(--active)),
      transparent
    ),
    hsl(var(--hue) calc(var(--active) * 97%) calc((var(--active) * 44%) + 12%));
  
  background: var(--bg);
  font-size: 0.80rem; /* Ajustado para que no sea gigante */
  font-weight: 500;
  border: 0;
  cursor: pointer;
  padding:  0.45em 0.9em;
  display: flex;
  align-items: center;
  gap: 0.25em;
  white-space: nowrap;
  border-radius: 100px;
  position: relative;
  box-shadow:
    0 0 calc(var(--active) * 6em) calc(var(--active) * 3em) hsl(var(--hue) 97% 61% / 0.75),
    0 0.05em 0 0 hsl(var(--hue) calc(var(--active) * 97%) calc((var(--active) * 50%) + 30%)) inset,
    0 -0.05em 0 0 hsl(var(--hue) calc(var(--active) * 97%) calc(var(--active) * 60%)) inset;
  transition: box-shadow var(--transition), scale var(--transition), background var(--transition);
  scale: calc(1 + (var(--active) * 0.1));
  color: #ffffff; /* Color de texto por defecto */
}

.sparkle-button button:active {
  scale: 1;
}

.sparkle-button svg {
  overflow: visible !important;
}

/* Animación de los íconos de estrella dentro del botón */
.sparkle path {
  color: hsl(0 0% calc((var(--active, 0) * 70%) + var(--base)));
  transform-box: fill-box;
  transform-origin: center;
  fill: currentColor;
  stroke: currentColor;
  animation-delay: calc((var(--transition) * 1.5) + (var(--delay) * 1s));
  animation-duration: 0.6s;
  transition: color var(--transition);
}

.sparkle-button button:is(:hover, :focus-visible) path {
  animation-name: bounce;
}

@keyframes bounce {
  35%, 65% { scale: var(--scale); }
}

.sparkle path:nth-of-type(1) { --scale: 0.5; --delay: 0.1; --base: 40%; }
.sparkle path:nth-of-type(2) { --scale: 1.5; --delay: 0.2; --base: 20%; }
.sparkle path:nth-of-type(3) { --scale: 2.5; --delay: 0.35; --base: 30%; }

/* Borde brillante */
.sparkle-button button:before {
  content: "";
  position: absolute;
  inset: -0.25em;
  z-index: -1;
  border: 0.25em solid hsl(var(--hue) 97% 50% / 0.5);
  border-radius: 100px;
  opacity: var(--active, 0);
  transition: opacity var(--transition);
}

/* Efecto de chispa giratoria */
.spark {
  position: absolute;
  inset: 0;
  border-radius: 100px;
  rotate: 0deg;
  overflow: hidden;
  mask: linear-gradient(white, transparent 50%);
  animation: flip calc(var(--spark) * 2) infinite steps(2, end);
}

@keyframes flip { to { rotate: 360deg; } }

.spark:before {
  content: "";
  position: absolute;
  width: 200%;
  aspect-ratio: 1;
  top: 0%;
  left: 50%;
  z-index: -1;
  translate: -50% -15%;
  rotate: 0;
  transform: rotate(-90deg);
  opacity: calc((var(--active)) + 0.4);
  background: conic-gradient(
    from 0deg,
    transparent 0 340deg,
    white 360deg
  );
  transition: opacity var(--transition);
  animation: rotate var(--spark) linear infinite both;
}

.spark:after {
  content: "";
  position: absolute;
  inset: var(--cut);
  border-radius: 100px;
}

.backdrop {
  position: absolute;
  inset: var(--cut);
  background: var(--bg);
  border-radius: 100px;
  transition: background var(--transition);
}

@keyframes rotate { to { transform: rotate(90deg); } }

/* Interacción Hover */
.sparkle-button button:is(:hover, :focus-visible) {
  --active: 1;
  --play-state: running;
  color: white; /* Texto blanco al hacer hover */
}

/* Contenedor de partículas flotantes */
.particle-pen {
  position: absolute;
  width: 200%;
  aspect-ratio: 1;
  top: 50%;
  left: 50%;
  translate: -50% -50%;
  -webkit-mask: radial-gradient(white, transparent 65%);
  z-index: -1;
  opacity: var(--active, 0);
  transition: opacity var(--transition);
  pointer-events: none; /* Importante para no bloquear clicks */
}

.particle {
  fill: white;
  width: calc(var(--size, 0.25) * 1rem);
  aspect-ratio: 1;
  position: absolute;
  top: calc(var(--y) * 1%);
  left: calc(var(--x) * 1%);
  opacity: var(--alpha, 1);
  animation: float-out calc(var(--duration, 1) * 1s) calc(var(--delay) * -1s) infinite linear;
  transform-origin: var(--origin-x, 1000%) var(--origin-y, 1000%);
  z-index: -1;
  animation-play-state: var(--play-state, paused);
}

.particle path {
  fill: hsl(var(--hue) 80% 60%); /* Partículas rojizas */
  stroke: none;
}

.particle:nth-of-type(even) {
  animation-direction: reverse;
}

@keyframes float-out { to { rotate: 360deg; } }

/* Texto del botón */
.sparkle-button .text {
  translate: 2% -6%;
  letter-spacing: 0.01ch;
  /* Gradiente del texto en reposo */
  background: linear-gradient(90deg, hsl(0 0% calc((var(--active) * 100%) + 65%)), hsl(0 0% calc((var(--active) * 100%) + 26%)));
  -webkit-background-clip: text;
  /* color: transparent;  <-- Comentado para que se vea siempre, activado por JS si prefieres */
  transition: background var(--transition);
}

.sparkle-button button svg {
  inline-size: 1.25em;
  translate: -25% -5%;
}