body{
    background: radial-gradient(circle at top left,#0f2027,#203a43,#2c5364);
    color: #e0e0e0;
    margin: 0;
    padding: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
}
h1 {
    text-align: center;
    color: #00ffff;
    text-shadow: 0 0 10px #00ffff ,  0 0 30px #00ffff;
    margin-top: 40px;
}

form{
    background: rgba(20, 20, 20, 0.9);
    border: 1px solid #00ffff55;
    padding: 25px; 
    border-radius: 25px;
    width: 400px;
    margin: 40px auto;
    box-shadow: 0 0 20px rgba(0, 255, 255, 0.15);
    backdrop-filter: blur(8px);
    animation: fadeIn 0.8s ease;
}

label{
    display: block ;
    font-weight: bold;
    margin-top: 10px;
    color: #80ffff;
    text-shadow: 0 0 5px #00ffff;
    font-size: 18px;
}

select{
    width: 100%;
    padding: 10px;
    margin-top: 6px;
    border-radius: 8px;
    border: 1px solid #00ffff55 ;
    background: black;
    color: white;
    font-size: 15px;
    outline: none;
    transition: all 0.2s ease;

}

input{
    width: 95%;
    padding: 10px;
    margin-top: 6px;
    border-radius: 8px;
    border: 1px solid #00ffff55 ;
    background: black;
    color: white;
    font-size: 15px;
    outline: none;
    transition: all 0.2s ease;
}

select:focus{
    border-color: #00ffff;
    box-shadow:0 0 8px #00ffffaa;
}

button{
    width: 100%;
    margin-top: 15px;
    padding: 10px;
    font-size: 16px;
    font-weight: bold;
    color: black;
    background: linear-gradient(90deg ,#00ffff ,#00ffb3);
    border-radius: 8px;
    cursor: pointer;
    box-shadow: 0 0 20px #00ffff77;
    transition: transform 0.2s, box-shadow 0.3s;
}

button:hover{
    transform: translateY(-2px);
    box-shadow: 0 0 30px #00ffffcc;   
}

.resultado{
    background: black;
    color: #00ffff;
    text-align: center;
    padding: 15px;
    border-radius: 10px;
    margin: 20px auto;
    width: 400px;
    font-weight: bold;
    box-shadow: 0 0 20px #00ffff77;
    border: 1px solid #00ffcc66;
    text-shadow: 0 0 6px #00ffcc;

}

.resultado.error{
    background: black;
    color: #ff6b6b;
    box-shadow: 0 0 20px #ffb6f688;
    border: 1px solid #ff6b6b55;
    text-shadow: 0 0 6px #ff4d4d;

}