body {
  /* Ajout de min-height pour que le fond couvre tout l'écran */
  min-height: 100vh;
  background: radial-gradient(circle at top, #3a003a, #000);
  background-size: 200% 200%;
  animation: bgMove 10s infinite alternate ease-in-out;
  margin: 0;
  padding: 20px;
  font-family: Arial, sans-serif;
  overflow-x: hidden;
}

@keyframes bgMove {
  0% { background-position: 50% 0%; }
  100% { background-position: 50% 100%; }
}

/* ===== TITRES ===== */
h1, h2 {
  color: #ff69b4;
  text-align: center;
}

h1 {
  font-size: 3em;
  animation: glow 2.5s infinite alternate;
}

h2 {
  animation: fadeUp 1.5s ease both;
}

@keyframes glow {
  from {
    text-shadow:
      0 0 10px #ff69b4,
      0 0 20px #ff1493,
      0 0 40px #ff1493;
  }
  to {
    text-shadow:
      0 0 20px #ff69b4,
      0 0 40px #ff1493,
      0 0 80px #ff1493;
  }
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== CONTAINER ===== */
.container {
  text-align: center;
  margin: 30px auto;
}

/* ===== IMAGE & TEXTE ===== */
#myImage {
  display: none;
  margin: 20px auto;
  max-width: 250px;
  opacity: 0;
  transform: scale(0.8);
  transition: opacity 1s ease, transform 1s ease;
}

#myText {
  display: none;
  color: red;
  font-size: 1.2em;
  opacity: 0;
  transition: opacity 1s ease;
}

/* ===== BUTTON ===== */
.Btn {
  width: 180px;
  height: 55px;
  border-radius: 45px;
  border: none;
  align-items: center;
  background: linear-gradient(135deg, #ff5fff, #c800ff);
  color: white;
  font-size: 1em;
  cursor: pointer;
  box-shadow:
    0 0 20px rgba(255, 105, 180, 0.6),
    inset 0 0 10px rgba(255, 255, 255, 0.3);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.Btn:hover {
  transform: scale(1.08);
  box-shadow:
    0 0 40px rgba(255, 105, 180, 1);
}

.linkBtn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}

/* ===== COEURS FLOTTANTS ===== */
body::before,
body::after {
  content: "💖";
  position: fixed;
  font-size: 2.5rem;
  opacity: 0.3;
  z-index: 999;
  pointer-events: none;
  animation: float 8s linear infinite;
}

body::before {
  left: 10%;
}

body::after {
  left: 80%;
  animation-duration: 12s;
}

@keyframes float {
  0% {
    top: 110%;
    transform: rotate(0deg) scale(0.8);
  }
  100% {
    top: -10%;
    transform: rotate(360deg) scale(1.2);
  }
}