*{margin:0;padding:0;box-sizing:border-box}
body{
    font-family:Poppins,sans-serif;
    background:url('https://images.unsplash.com/photo-1505691723518-36a5ac3be353?auto=format&fit=crop&w=1600&q=80') center/cover no-repeat;
    min-height:100vh;
    display:flex;
    justify-content:center;
    align-items:center;
    position:relative;
    color:white;
}
body::before{
    content:"";
    position:absolute;
    inset:0;
    background:rgba(0,0,0,.55);
}
.form-box{
    width:90%;
    max-width:400px;
    padding:30px;
    position:relative;
    z-index:2;
    text-align:center;
    background:transparent;
    border-radius:10px;
}
h2{font-size:28px;margin-bottom:22px}
input{
    width:100%;
    padding:12px 0;
    margin-bottom:18px;
    background:transparent;
    border:none;
    border-bottom:2px solid #c8e9ff;
    color:white;
    font-size:16px;
    outline:none
}
input::placeholder{color:#e1f5ff}
button{
    width:100%;
    padding:12px;
    background:transparent;
    border:none;
    color:white;
    font-size:16px;
    font-weight:600;
    cursor:pointer;
    letter-spacing:1px
}
.message{
    color:#ffd0d0;
    font-size:14px;
    margin-bottom:12px
}
a{
    color:#a8eaff;
    text-decoration:none;
    font-weight:600;
    font-size:14px
}



@media (max-width: 320px) {
    h1 { font-size: 18px; }
    h2 { font-size: 16px; }
    h3 { font-size: 14px; }
    p  { font-size: 12px; }
    nav a { font-size: 12px; padding: 6px; }
    th, td { font-size: 12px; padding: 6px; }
    button { font-size: 12px; padding: 6px 10px; }
}


@media (max-width: 480px) {
    h1 { font-size: 20px; }
    h2 { font-size: 18px; }
    h3 { font-size: 16px; }
    p  { font-size: 13px; }
    nav ul { gap: 12px; }
    nav a { font-size: 13px; padding: 7px; }
    th, td { font-size: 13px; }
}


@media (max-width: 600px) {
    h1 { font-size: 22px; }
    h2 { font-size: 20px; }
    h3 { font-size: 18px; }
    p  { font-size: 14px; }
    nav ul { gap: 14px; }
    nav a { font-size: 14px; padding: 8px; }
}


@media (max-width: 768px) {
    h1 { font-size: 24px; }
    h2 { font-size: 22px; }
    h3 { font-size: 20px; }
    p  { font-size: 15px; }
    nav ul { flex-direction: row; justify-content: center; gap: 16px; }
    nav a { font-size: 15px; padding: 8px 10px; }
    th, td { font-size: 14px; padding: 7px; }
    button { font-size: 14px; padding: 8px 12px; }
}


@media (max-width: 1024px) {
    h1 { font-size: 26px; }
    h2 { font-size: 24px; }
    h3 { font-size: 22px; }
    p  { font-size: 16px; }
    nav ul { gap: 18px; }
    nav a { font-size: 16px; padding: 10px 12px; }
    th, td { font-size: 15px; padding: 8px; }
    button { font-size: 15px; padding: 10px 14px; }
}


@media (min-width: 1025px) {
    h1 { font-size: 28px; }
    h2 { font-size: 26px; }
    h3 { font-size: 24px; }
    p  { font-size: 16px; }
    nav ul { flex-direction: row; justify-content: flex-end; gap: 20px; }
    nav a { font-size: 16px; padding: 10px 14px; }
    th, td { font-size: 16px; padding: 10px; }
    button { font-size: 16px; padding: 10px 16px; }
}


@media (min-width: 1441px) {
    h1 { font-size: 32px; }
    h2 { font-size: 28px; }
    h3 { font-size: 26px; }
    p  { font-size: 18px; }
    nav ul { gap: 24px; }
    nav a { font-size: 18px; padding: 12px 16px; }
    th, td { font-size: 17px; padding: 12px; }
    button { font-size: 17px; padding: 12px 18px; }
}