/* Bouton principal */
.demo-btn {
  background: linear-gradient(135deg, #00b4d8, #0077b6);
  color: white;
  border: none;
  padding: 12px 24px;
  font-size: 18px;
  border-radius: 8px;
  cursor: pointer;
  transition: transform 0.2s, background 0.3s;
}
.demo-btn:hover {
  transform: scale(1.05);
  background: linear-gradient(135deg, #0096c7, #005f73);
}

/* Modale plein écran avec effet flou */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(10, 10, 10, 0.4);
  backdrop-filter: blur(10px);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 999;
}

/* Conteneur de l'iframe avec contours flous et vitre */
.modal-content {
  position: relative;
  width: 90%;
  height: 90%;
  border-radius: 20px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 0 30px rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(15px);
}

/* Loader centré et animé */
/* Loader en points */
/* Loader barre */
/* Loader barre */
#demo-loader {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 200px;
  height: 12px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 6px;
  overflow: hidden;
  transform: translate(-50%, -50%);
}

#demo-loader::before {
  content: "";
  display: block;
  height: 100%;
  width: 50%;
  background: linear-gradient(90deg, #0ff, #0077b6);
  border-radius: 6px;
  animation: loadingBar 3s linear infinite;
}

@keyframes loadingBar {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(200%);
  }
}






/* Masquer */
.hidden {
  display: none;
}

/* Iframe plein écran */
#demo-iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
  opacity: 0;             /* Démarre transparent */
  transition: opacity 0.5s ease-in-out; /* transition douce */
  pointer-events: none;   /* empêcher interaction tant que transparent */
}

#demo-iframe.visible {
  opacity: 1;
  pointer-events: auto;  /* activation interaction */
}


/* Bouton fermer */
.close-btn {
  position: absolute;
  top: 20px;
  right: 25px;
  background: rgba(255, 255, 255, 0.1);
  border: none;
  color: white;
  font-size: 18px;
  padding: 8px 15px;
  border-radius: 8px;
  cursor: pointer;
  z-index: 1001;
  transition: background 0.3s;
  font-weight: 600;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.close-btn:hover {
  background: rgba(191, 39, 39, 0.25);
}