*{
    font-family: 'Segoe UI', Tahoma, sans-serif;
    box-sizing:border-box;
}
body{
    margin:0;
    padding:0;
    background-color: #f8f9fa;
    color: #333;
}
h1,h4{
    text-align:center;
    color: #2c3e50;
}
h1{
    font-size:40px;
    margin-top:30px;
}
h4{
    font-size:20px;
}
.start,.buddet{
    width:90%;
    max-width:800px;
    margin: 30px auto;
    background: #fff;
    padding:20px;
    border-radius:10px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    text-align: center;
}
.buddet{
    min-height:180px;
    max-height:300px;
    overflow-y:auto;
    box-shadow:0 3px 8px rgba(0,0,0,0.15);
}
.start label{
    display:block;
    margin-top:15px;
    font-size:17px;
    color: #444;
}
.start input{
    padding:10px;
    margin:10px 5px;
    width:240px;
    font-size: 16px;
    border-radius: 6px;
    border: 1px solid #ccc;
}
.start input:focus{
    outline: none;
    border-color: #2980b9;
}
.start button{
    padding: 10px 18px;
    background: #2c3e50;
    color: #fff;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    cursor: pointer;
    margin-top: 10px;
}
.start button:hover{
    background: #2c3e50;
}
.card{
    display:flex;
    flex-wrap:wrap;
    justify-content: center;
    gap: 30px;
    width:90%;
    margin: 30px auto;
}
.card div{
    flex: 1;
    min-width:200px;
    background: #ecf0f1;
    padding: 30px 20px;
    font-size: 22px;
    text-align: center;
    border-radius: 10px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}
.card .amount{
    font-size: 28px;
    color: #2c3e50;
    margin-top: 10px;
    font-weight: bold;
}
.buddet ul{
    list-style: none;
    margin: 0;
    padding: 0;
}
.buddet li{
    background: #34495e;
    color: #fff;
    padding:12px 16px;
    margin:10px 0;
    border-radius: 6px;
    font-size: 17px;
    transition: 0.3s;
}
.buddet li:hover{
    background: #2c3e50;
    transform:scale(1.02);
    box-shadow: 0 0 4px rgba(0,0,0,0.3);
}
#clear{
    display: block;
    margin: 24px auto 0;
    text-align: center;
}