*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, Helvetica, sans-serif;
}

body{
    background-color: #f5f6fa;
}

main{
    display: flex;
    min-height: 100vh;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

form{
    width: 100%;
    max-width: 1000px;
    border-radius: 12px;
    padding: 24px;
    background-color: #fff;
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

form h1{
    font-size: 1.8rem;
    text-align: center;
    margin-bottom: 20px;
    text-transform: uppercase;
}

.inp-body{
    width: 100%;
    margin-bottom: 15px;
    padding: 12px;
    background-color: #fff;
    box-shadow: 0 0 10px rgba(0,0,0,0.15);
    border-radius: 8px;
    display: flex;
    flex-direction: column;
}

.inp-body label{
    font-size: 0.85rem;
    font-weight: bold;
    text-transform: uppercase;
    margin-bottom: 5px;
}

.inp-body input{
    width: 100%;
    height: 36px;
    border: none;
    background-color: transparent;
    outline: none;
    font-size: 1rem;
}

.captcha-box{
    align-items: center;
    text-align: center;
}

.captcha-box img{
    width: 100%;
    max-width: 260px;
    margin: 10px auto;
    display: block;
    border-radius: 6px;
    border: 1px solid #ccc;
}

.captcha-box input{
    text-align: center;
    font-weight: bold;
    letter-spacing: 3px;
    border-bottom: 1px solid #ccc;
}

.submit{
    display: flex;
    justify-content: flex-end;
    margin-top: 10px;
}

.submit button{
    width: 120px;
    padding: 12px;
    border: none;
    background-color: #007bff;
    border-radius: 8px;
    color: #fff;
    font-size: 1rem;
    cursor: pointer;
}

.submit button:hover{
    background-color: #0056b3;
}

@media (max-width: 480px){
    form{
        padding: 18px;
    }

    form h1{
        font-size: 1.5rem;
    }

    .submit{
        justify-content: center;
    }

    .submit button{
        width: 100%;
    }
}

@media (min-width: 768px){
    form{
        max-width: 420px;
    }
}

@media (min-width: 1200px){
    form{
        max-width: 500px;
    }
}