body{
  margin:0;
  font-family:Arial,sans-serif;
  background:#eef2ff;
}

.container{
  max-width:1000px;
  margin:auto;
  padding:20px;
}

.card{
  background:white;
  padding:25px;
  border-radius:20px;
  box-shadow:0 5px 20px rgba(0,0,0,0.1);
  margin-top:20px;
}

.hidden{
  display:none;
}

input{
  width:100%;
  padding:15px;
  border-radius:12px;
  border:1px solid #ccc;
  margin-top:10px;
  box-sizing:border-box;
}

button{
  margin-top:15px;
  padding:12px 20px;
  border:none;
  border-radius:12px;
  background:#4f46e5;
  color:white;
  cursor:pointer;
  font-size:16px;
}

.grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
  gap:15px;
}

.box{
  background:#4f46e5;
  color:white;
  padding:30px 15px;
  border-radius:16px;
  text-align:center;
  cursor:pointer;
  font-weight:bold;
}

.box:hover{
  transform:scale(1.02);
}

.group-card{
  background:#f5f5ff;
  border-radius:15px;
  padding:15px;
  margin-bottom:15px;
}