/* RESET GENERAL */
* {
  box-sizing: border-box;
}

/* BODY CENTRADO */
body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: #F7BDA5;
  font-family: Georgia, cursive;
  color: #5E808C;
}

/* SECCIÓN INICIAL (SOBRE) */
.inicio {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

/* IMAGEN DEL SOBRE */
.sobre {
  width: 400px;
  max-width: 90vw;
  cursor: pointer;
  transition: transform 0.9s ease, opacity 0.9s ease;
}

/* ANIMACIÓN DE ABRIR */
.abierto {
  transform: rotateX(75deg) scale(0.85);
  opacity: 0;
}

/* BOTÓN */
.boton {
  margin-top: 30px;
  padding: 14px 30px;
  background-color: #D98A86;
  border: none;
  border-radius: 12px;
  color: white;
  font-size: 17px;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

.boton:hover {
  background-color: #5E808C;
}

/* SECCIÓN CARTA */
.carta {
  display: none;
  min-height: 100vh;
  justify-content: center;
  align-items: center;
  padding: 40px;
}

/* CUADRO VINTAGE */
.carta-box {
  background-color: #9AB19E;
  padding: 45px;
  border-radius: 22px;
  max-width: 760px;
  box-shadow: 0 0 28px rgba(0,0,0,0.25);
  line-height: 1.7;
}

/* TÍTULO */
.carta-box h1 {
  text-align: center;
  margin-bottom: 30px;
  font-size: 32px;
}

/* TEXTO */
.carta-box p {
  margin-bottom: 18px;
  font-size: 17px;
}
/* FOTO AL FINAL DE LA CARTA */
.foto {
  display: block;
  width: 100%;
  max-width: 420px;
  margin: 25px auto 0;
  border-radius: 18px;
  box-shadow: 0 0 18px rgba(0,0,0,0.25);
}