body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
background: linear-gradient(120deg, #1e3c72, #2a5298);  
  display: flex;
    flex-direction: column;
    align-items: center;
  }

  .background{
    position: absolute;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
  }
  .sphere{
    position: absolute;
    width: 150px;
    height: 150px;
    background:  radial-gradient(circle, rgba(255, 255, 255, 0.6), rgba(255, 255, 255, 0));
    border-radius: 50%;
    animation: float 10s infinite ease-in-out;
  }

  @keyframes float {
    0%, 100%{
        transform: translateY(-10px) translateX(0px) scale(1);
        opacity: 0.6;
        
    }
    50%{
        transform: translateY(300px) translateX(100px) scale(1.2);
        opacity: 1;
    }
    
  }

  .sphere:nth-child(1){
    top: 10%;
    left: 20%;
    animation-delay: 0s;
  }
  .sphere:nth-child(2){
    top: 50%;
    left: 50%;
    animation-delay: 3s;
  }.sphere:nth-child(3){
    top: 30%;
    left: 80%;
    animation-delay: 1s;
  }.sphere:nth-child(4){
    top: 70%;
    left: 10%;
    animation-delay: 5s;
  }.sphere:nth-child(5){
    top: 80%;
    left: 60%;
    animation-delay: 8s;
  }
  .heading{
    font-family: cursive;
    font-size: 36px;
    text-decoration: underline #f2178c;
    color: #ffffff;
}
.note{
    font-size: 18px;
    color:aliceblue;
    font-weight: 400;
    font-family: cursive;
}
  #calendar {
    width: 90%;
    max-width: 600px;
    background: white;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    margin-top: 20px;
    border-radius: 10px;
    border: 3px dashed rgb(64, 66, 64);
    overflow: hidden;
    transition: 0.3s all ease;
  }
  #calendar:hover{
    transform: translateY(-10px);

  }
  #header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px;
    background: linear-gradient(45deg, #007bff ,#f2178c, #007bff);
    color: white;
  }
  
  #header button {
    background: none;
    border: none;
    color: white;
    font-size: 1.5em;
    cursor: pointer;
  }
  
  #weekdays, #dates {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 5px;
    padding: 10px;
  }
  
  #weekdays div {
    font-weight: bold;
    text-align: center;
    background: yellow;
    padding: 10px;
  }
  
  #dates div {
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f9f9f9;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 1px solid black;
  }
  
  #dates div:hover {
    background: #007bff;
    color: white;
    transform: scale(1.2);
  }
  
  .modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    justify-content: center;
    align-items: center;
  }
  
  .modal-content {
    background: white;
    padding: 20px;
    border-radius: 10px;
    width: 90%;
    max-width: 400px;
  }
  .modal-content h2{
    text-decoration: underline rgb(243, 18, 115);
  }
  .modal-content label{
    display: flex;
    padding-bottom: 10px;
    font-size: 20px;
  }
  .modal-content input{
    width: 300px;
    height: 40px;
    border-radius: 10px;
    padding-left: 10px;
    margin-bottom: 10px;
    font-size: 18px;
    transition: 0.3s all ease;

  }
  .modal-content input:hover{
    border: 2px solid #f2178c;
  }
  
  #close {
    float: right;
    font-size: 32px;
    cursor: pointer;
  }
  
  #marker-buttons {
    display: flex;
    gap: 10px;
    margin-top: 10px;
  }
  
  .marker-btn {
    border: none;
    background: none;
    font-size: 26px;
    cursor: pointer;

  }
  .marker-btn.active{
    height: 50px;
    width: 50px;
    background: #23d82397;
    border-radius: 50%;

  }
  
  .marker-btn.active {
    transform: scale(1.2);
  }
  
  #save-event {
    margin-top: 20px;
    padding: 10px;
    width: 100%;
    background: #007bff;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
  }
  
  #event-list {
    margin-top: 20px;
    background: white;
    color: #f2178c;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    width: 90%;
    max-width: 600px;
    padding: 10px;
    border-radius: 10px;
  }
  
  .credit{
    font-size: 32px;
    font-family: cursive;
    font-weight: 600;
  }