* {
  box-sizing: border-box;
}

body {
  font-family: 'Inter', sans-serif;
  background: linear-gradient(to bottom, #ffffff, #f3f4f6);
  color: #00473E;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100vh;
}

.header {
  text-align: center;
  margin: 20px 0;
}

.header h1 {
  font-size: 2.5rem;
  font-weight: 600;
  color: #B22222;
}

.header p {
  font-size: 1rem;
  color: #00473E;
}

.footer {
  margin-top: auto;
  text-align: center;
  padding: 10px 0;
  color: #666;
  font-size: 0.9rem;
}

/* Kalender */
.calendar {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 10px;
  padding: 20px;
  width: 90%;
  max-width: 800px;
  grid-auto-rows: 1fr; /* Türchen dynamisch anpassen */

}

.door {
  background: #00473E;
  color: #FFFFFF;
  font-size: 1.5rem;
  font-weight: 600;
  text-align: center;
  padding: 20px;
  border-radius: 10px;
  transition: transform 0.2s, background 0.2s;
  cursor: pointer;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.door:hover {
  transform: scale(1.05);
  background: #006A57;
}

.door.locked {
  background: #D3D3D3;
  color: #888;
  cursor: not-allowed;
}

.door.open {
  background: #FFFFFF;
  color: #00473E;
  pointer-events: none;
}

/* Inhalt */
#content {
  background: #FFFFFF;
  color: #00473E;
  padding: 20px;
  border-radius: 10px;
  margin: 20px auto;
  max-width: 600px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  text-align: center;
  font-size: 1.2rem;
  display: none;
  max-height: 70vh; /* Maximal 70% der Bildschirmhöhe */
  overflow-y: auto; /* Scrollen erlauben */

}

#content img, #content video {
  max-width: 100%;
  border-radius: 10px;
}

/* Animation */
.hidden {
  opacity: 0;
  transform: scale(0.9);
}

.visible {
  opacity: 1;
  transform: scale(1);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

/* Schneeflocken */
.snowflakes {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: -1;
  overflow: hidden;
}

.snowflake {
  position: absolute;
  top: -10%;
  left: 50%;
  font-size: 1.2rem;
  color: #640000;
  animation: fall 10s linear infinite;
  opacity: 0.5;
}

@keyframes fall {
  0% {
    transform: translateY(-10%) translateX(0);
  }
  100% {
    transform: translateY(110%) translateX(-20%);
  }
}

@media (max-width: 768px) {
  .calendar {
      grid-template-columns: repeat(3, 1fr); /* 3 Spalten auf Tablets */
  }
  .header h1 {
      font-size: 2rem; /* Titel verkleinern */
  }
  .header p {
      font-size: 0.9rem; /* Untertitel kleiner machen */
  }
  .footer {
      font-size: 0.8rem; /* Footer kompakter */
  }
  #content {
      font-size: 1rem; /* Inhalt kleiner darstellen */
      padding: 15px;
  }
  .snowflake {
      font-size: 1rem; /* Schneeflocken kleiner */
      opacity: 0.4; /* Etwas dezenter */
  }
}

@media (max-width: 480px) {
  .calendar {
      grid-template-columns: repeat(2, 1fr); /* 2 Spalten auf kleinen Bildschirmen */
  }
  .door {
      font-size: 1.2rem; /* Textgröße der Türchen reduzieren */
      padding: 15px; /* Platz innerhalb der Türchen verkleinern */
  }
  .header h1 {
      font-size: 1.8rem;
  }
  .header p {
      font-size: 0.8rem;
  }
  #content {
      font-size: 0.9rem;
      padding: 10px;
  }
  .snowflake {
      font-size: 0.8rem; /* Noch kleinere Schneeflocken */
  }
  .door {
      flex: 1;
      min-height: 50px; /* Mindesthöhe festlegen */
  }
}