* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}
#head {

    font-size: 2.5rem;
    color: #38bdf8;
}
body {
    background-color: #0f172a; 
    color: #f8fafc;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    min-height: 100vh;
    padding: 20px;
}

#form {
    background-color: #1e293b; 
    margin-top: 10px;
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
    width: 100%;
    max-width: 400px;
    text-align: center;
}


input {
    width: 100%;
    padding: 12px 16px;
    margin-bottom: 12px;
    border: 1px solid #334155;
    border-radius: 6px;
    background-color: #0f172a;
    color: #fff;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

input:focus {
    outline: none;
    border-color: #38bdf8;
    box-shadow: 0 0 0 2px rgba(56, 189, 248, 0.2);
}

button {
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.1s, opacity 0.2s;
}

button:active {
    transform: scale(0.98);
}

#sendcode {
    background-color: #334155;
    color: #f8fafc;
    margin-bottom: 10px;
}

#verbtn {
    background-color: #0ea5e9;
    color: white;
}

#signupbtn {
    background-color: #10b981; 
    color: white;
    font-size: 1.1rem;
    margin-top: 10px;
}

button:hover {
    opacity: 0.9;
}

#message {
    margin-top: 15px;
    font-size: 0.9rem;
}


@media (max-width: 768px) {
    #form {
        padding: 2rem;
    }
}

@media (max-width: 480px) {
    body {
        padding: 10px;
    }
    
    #form {
        padding: 1.5rem;
        border-radius: 8px;
    }

    #head {
        font-size: 1.25rem;
    }

    input, button {
        padding: 10px;
    }
}