.carta {
  box-sizing: border-box; 
  width: 100%;
  max-width: 360px;     
  height: auto;          
  padding: 20px;
  border: 2px solid #000;
  border-radius: 10px;
  box-shadow: 5px 5px 15px rgba(0, 0, 0, 0.3);
  background-color: #ffffff;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-family: Georgia, 'Times New Roman', Times, serif;
 }
.carta h1{
  margin: 0;
  padding: 0;
  font-family: 'Sevillana', cursive;
  color: #0d2201;
}
.container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

@media (max-width: 600px) {
  .carta {
    max-width: 100%;
    padding: 16px;
  }
}
.carta h1 {
  font-size: clamp(1.25rem, 3.2vw, 1.5rem); 
  margin-bottom: 10px;
}
.carta p {
  font-size: clamp(0.95rem, 2.2vw, 1rem);
  text-align: center;
  margin: 0 20px;
}

button {
     margin-top: 20px;
     padding: 10px 20px;
     font-size: 16px;
     border: none;
     border-radius: 5px;
     background-color: #121D0C;
     color: #fff;
     cursor: pointer;
}

@media (max-width: 420px) {
  .carta p { margin: 0 12px; }
  button { width: 100%; padding: 12px; font-size: 1rem; }
}

body {
  background: linear-gradient(rgba(0,0,0,0.18), rgba(0,0,0,0.18)), url('../Imagenes/flores.jpg') center/cover no-repeat fixed;
  background-color: #324A2A;
}

body.page-transition {
  transition: opacity 420ms ease, transform 420ms ease;
  will-change: opacity, transform;
}
body.page-hidden {
  opacity: 0;
  transform: translateY(6px);
  pointer-events: none;
}

.carta { 
  position: relative; 
  z-index: 2;
}

.hearts {
  position: fixed;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 0;
}

.heart {
  position: absolute;
  left: 50%;
  top: 100%;
  transform: translate(-50%, 0) scale(1);
  font-size: 28px;
  line-height: 1;
  user-select: none;
  cursor: pointer;
  pointer-events: auto; 
  will-change: transform, opacity;
  animation-name: floatUp;
  animation-timing-function: linear;
  animation-fill-mode: forwards;
}

@keyframes floatUp {
  0% {
    transform: translateY(0) scale(0.9) rotate(0deg);
    opacity: 0;
  }
  8% {
    opacity: 1;
  }
  100% {
    transform: translateY(-120vh) rotate(20deg) scale(1.05);
    opacity: 0;
  }
}

.heart.pop {
  transition: transform 0.15s ease, opacity 0.15s ease;
  transform: scale(1.6);
  opacity: 0;
}


.falling {
  position: fixed;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 0;
}

/* hojas */
.leaf {
  position: absolute;
  top: -10vh;
  left: var(--left, 50%);
  transform: translateX(-50%) rotate(var(--rot, 0deg)) scale(var(--scale, 1));
  font-size: var(--size, 24px);
  line-height: 1;
  opacity: var(--opacity, 0.95);
  will-change: transform, opacity;
  animation: fallDown var(--duration, 8s) linear forwards;
  pointer-events: none;
  filter: drop-shadow(0 2px 2px rgba(0,0,0,0.12));
}


@keyframes fallDown {
  0% {
    transform: translateY(-10vh) translateX(0) rotate(var(--rot, 0deg)) scale(var(--scale, 1));
    opacity: 0;
  }
  10% {
    opacity: 1;
  }
  100% {
    transform: translateY(120vh) translateX(var(--drift, 60px)) rotate(calc(var(--rot, 0deg) + 360deg)) scale(var(--scale, 1));
    opacity: 0;
  }
}

.heart {
  pointer-events: auto;
  z-index: 1;
}

.heart.pop {
  transition: transform 0.15s ease, opacity 0.15s ease;
  transform: scale(1.6);
  opacity: 0;
}

/* móvil */
@media (max-width: 720px) {
  body { background-attachment: scroll; background-position: top center; }
}