body{
margin:0;
font-family:system-ui;
background:#eef2f7;
}

.header{
background:#0f766e;
padding:16px;
text-align:center;
color:white;
font-weight:700;
}

.container{
max-width:520px;
margin:auto;
padding:16px;
padding-bottom:80px;
}

.card{
background:white;
padding:18px;
border-radius:14px;
margin-bottom:14px;
box-shadow:0 6px 18px rgba(0,0,0,.06);
}

.btn{
width:100%;
padding:14px;
border:none;
border-radius:10px;
background:#0f766e;
color:white;
font-size:16px;
margin-top:10px;
}

input{
width:100%;
padding:12px;
margin-top:10px;
border-radius:8px;
border:1px solid #ddd;
}

.nav{
position:fixed;
bottom:0;
width:100%;
max-width:520px;
left:50%;
transform:translateX(-50%);
display:flex;
justify-content:space-around;
background:white;
padding:12px;
}