body {
  margin: 0;
  overflow: hidden;
  background: #2b0a1a; /* fondo base */
  font-family: "Poppins", sans-serif;
}

canvas {
  display: block;
}

/* ===== Overlay ===== */
#overlay {
  position: fixed;
  inset: 0;
  background: #1a0d13;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}

#overlay.hidden {
  display: none;
}

.loader {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ===== Círculo de carga ===== */
.progress-ring {
  transform: rotate(-90deg);
  width: 200px;
  height: 200px;
}

.progress-ring__circle {
  stroke: #ff4fa1;
  stroke-width: 3;
  fill: transparent;
  stroke-dasharray: 565; /* ajustado a r=90 */
  stroke-dashoffset: 565;
  transition: stroke-dashoffset 0.5s ease;
  filter: drop-shadow(0 0 6px #ff7bbf);
}

/* ===== Botón ===== */
#startBtn {
  position: absolute;
  font-size: 1.2rem;
  letter-spacing: 0.2em;
  color: #ff7bbf;
  background: transparent;
  border: none;
  opacity: 0;
  cursor: pointer;
  pointer-events: none;
  transition: opacity 0.8s ease, transform 0.3s ease;
}

#startBtn:enabled {
  opacity: 1;
  pointer-events: auto;
}

#startBtn:hover:enabled {
  color: #ffcce1;
  transform: scale(1.1);
}

/* ===== Onda expansiva ===== */
.expander {
  position: absolute;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: #ff4fa1;
  transform: scale(0);
  opacity: 0.4;
  z-index: -1;
}

.expander.active {
  animation: expandOut 1s ease forwards;
}

@keyframes expandOut {
  0% { transform: scale(1); opacity: 0.5; }
  100% { transform: scale(20); opacity: 0; }
}

#greetingContainer {
  position: absolute;
  top: 5%; /* mantiene tu posición deseada */
  left: 50%;
  transform: translate(-50%, 0); /* solo centrado horizontal */
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
}


#greeting {
  margin: 0 0 1rem 0; /* espacio inferior para el botón */
  text-align: center;
  font-weight: 600;
  color: #FFF5E1;
  font-family: "Playfair Display", serif;
  font-size: clamp(1.5rem, 12vw, 4rem);
  opacity: 0;
  transition: opacity 1.5s ease, transform 1.5s ease;
  -webkit-text-stroke: 1px #D8B4FE;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.6);
  white-space: normal; /* permite que se parta en varias líneas */
}



#greeting.visible {
  opacity: 1;
  transform: none; /* quitamos translate para que no se mueva */
}


/* 📱 En móviles permite que se parta en dos líneas */
@media (max-width: 600px) {
  #greeting {
    white-space: normal;
    line-height: 1.3em;
  }
}

/* Contenedor */
#cardContainer {
  text-align: center;
  margin-top: 2rem;
}

/* Botón */
#openCardBtn {
  background: #ffd580; /* dorado suave */
  border: none;
  padding: 0.8rem 1.5rem;
  border-radius: 12px;
  font-size: 1rem;
  cursor: pointer;
  font-weight: bold;
  color: #2b0a1a;
  transition: transform 0.3s ease, background 0.3s ease;
}

#openCardBtn:hover {
  background: #ffb7c5;
  transform: scale(1.05);
}

/* Carta animada */
#letter {
  max-width: 600px;
  margin: 2rem auto 0;
  background: #fffdf7;
  border-radius: 12px;
  padding: 2rem;
  text-align: left;
  font-family: "Playfair Display", serif;
  box-shadow: 0 10px 25px rgba(0,0,0,0.3);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.7s ease;
  overflow: hidden;
}

/* Cuando está visible */
#letter.visible {
  transform: scaleY(1);
}

/* Contenido */
.letter-content h2 {
  margin-top: 0;
  color: #b95c7a;
}

.letter-content p {
  font-size: 1.1rem;
  line-height: 1.5em;
  color: #333;
}

.signature {
  margin-top: 2rem;
  font-style: italic;
  color: #555;
  text-align: right;
}