body{
    font-family: 'Inter', sans-serif;
    background: linear-gradient(135deg,#f0f4f8,#d9e22c);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    padding: 20px;
    box-sizing: border-box;
    color: #333;
}
.container{
    background-color: #ffff;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    padding: 30px;
    max-width: 600px;
    width: 100%;
    text-align: center;
    border: 1px solid #e0e0e0;
}
h1{
    color: #2c3e50;
    margin-bottom: 25px;
    font-size: 2.2em;
    font-weight: 700;
    letter-spacing: -0.5px;
}
.input-group{
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 30px;
}
.input-item{
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    width: 100%;
}
label{
    font-weight: 600;
    margin-bottom: 8px;
    color: #555;
    font-size: 1.1em;
}
select{
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ccc;
    border-radius: 8px;
    font-size: 1em;
    background-color: #f9f9f9;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-image: url('data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%2020%2020%22%3E%3Cpath%20d%3D%22M5%206l5%205%205-5z%22%20fill%3D%22%23666%22%2F%3E%3C%2Fsvg%3E');
    background-repeat: no-repeat;
    background-position: right 15px center;
    background-size: 12px;
    cursor: pointer;
    transition: border-color 0.3s ease,box-shadow 0.3 ease;
}
select:focus{
    border-color: #6182fb;
    box-shadow: 0 0 0 3px rgba(106, 130, 251, 0.2);
    outline: none;
}
button{
    background: linear-gradient(45deg,#6a82fb,#fc5c7d);
    color: white;
    padding: 14px 25px;
    border: none;
    border-radius: 8px;
    font-size: 1.1em;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3 ease;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.15);
    letter-spacing: 0.5px;
    text-transform: uppercase;
}
button:hover{
    background: linear-gradient(45deg,#5c70e0,#e04b6b);
    box-shadow: 0 7px 20px rgba(0, 0, 0, 0.2);
    transform: translateY(-2px);
}
button:active{
    transform: translateY(0);
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
}
.results{
    margin-top: 30px;
    padding-top: 25px;
    border-top: 1px solid #eee;
    text-align: left;
}
.results h2{
    color: #2c3e50;
    font-size: 1.8em;
    margin-bottom: 15px;
    font-weight: 700;
}
.results ul{
    list-style: none;
    padding: 0;
    margin: 0;
}
.results li{
    background-color: #f8fafd;
    border: 1px solid #e6eaf0;
    padding: 12px 18px;
    margin-bottom: 10px;
    border-radius: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 1.1em;
    color: #444;
}
.results li strong{
    color: #34495e;
    font-weight: 700;
}
.results li span{
    color: #6a82fb;
    font-weight: 600;
}
.message-box{
    background-color: #fff3cd;
    border: 1px solid #ffeeba;
    color: #856404;
    padding: 15px;
    border-radius: 8px;
    margin-top: 20px;
    display: none;
    font-size: 0.95em;
    text-align: left;
}
@media(min-width:480px){
    .input-group{
        flex-direction: row;
        justify-content: space-between;
    }
    .input-item{
        width: 48%;
    }
}
@media(max-width:480px){
    .container{
        padding: 20px;
    }
    h1{
        font-size: 1.8em;
    }
    button{
        width: 100%;
    }
}