:root{
--primary:#0a7cff;
--white:#ffffff;
--black:#111;
--glass:rgba(255,255,255,0.25);
}

*{
margin:0;
padding:0;
box-sizing:border-box;
}

body{
min-height:100vh;
background:
linear-gradient(rgba(0,0,0,.55), rgba(0,0,0,.55)),
url('../img/inscribete.png')
center/cover no-repeat;
display:flex;
justify-content:center;
align-items:center;
font-family:'Segoe UI', sans-serif;
}

.register-box{
width:600px;
padding:40px;
border-radius:22px;
background:var(--glass);
backdrop-filter:blur(16px);
box-shadow:0 25px 45px rgba(0,0,0,.35);
color:var(--white);
position:relative;
}

.back-btn{
position:absolute;
top:20px;
left:20px;
color:var(--white);
text-decoration:none;
font-size:14px;
display:flex;
align-items:center;
gap:8px;
opacity:.85;
transition:.3s;
}

.back-btn:hover{
opacity:1;
transform:translateX(-4px);
}

.register-box h2{
text-align:center;
margin-bottom:10px;
}

.register-box p{
text-align:center;
font-size:14px;
opacity:.9;
margin-bottom:30px;
}

.form-grid{
display:grid;
grid-template-columns:1fr 1fr;
gap:18px;
}

.input-group{
position:relative;
}

.input-group.full{
grid-column:1 / 3;
}

.input-group input,
.input-group select{
width:100%;
padding:14px 45px;
border-radius:12px;
border:none;
outline:none;
background:rgba(255,255,255,.9);
font-size:14px;
appearance:none;
}

.input-group i{
position:absolute;
top:50%;
left:15px;
transform:translateY(-50%);
color:#555;
}

.register-btn{
margin-top:25px;
width:100%;
padding:15px;
border:none;
border-radius:15px;
background:var(--primary);
color:var(--white);
font-size:15px;
cursor:pointer;
transition:.3s;
}

.register-btn:hover{
background:#0565d6;
}

.extra{
text-align:center;
margin-top:18px;
font-size:13px;
opacity:.9;
}

.extra a{
color:var(--white);
text-decoration:none;
}

.extra a:hover{
text-decoration:underline;
}

.social-icons{
margin-top:25px;
display:flex;
justify-content:center;
gap:18px;
}

.social-icons a{
width:38px;
height:38px;
display:flex;
align-items:center;
justify-content:center;
border-radius:50%;
background:rgba(255,255,255,0.18);
color:white;
font-size:16px;
text-decoration:none;
backdrop-filter:blur(8px);
transition:.3s;
}

.social-icons a:hover{
transform:translateY(-4px);
background:rgba(255,255,255,0.35);
}