*{

margin:0;

padding:0;

box-sizing:border-box;

font-family:'Poppins',sans-serif;

}

body{

background:linear-gradient(135deg,#4f46e5,#7c3aed);

min-height:100vh;

display:flex;

justify-content:center;

align-items:center;

padding:30px;

}

.container{

width:100%;

max-width:760px;

}

.card{

background:rgba(255,255,255,.15);

backdrop-filter:blur(20px);

border-radius:20px;

padding:40px;

box-shadow:0 10px 40px rgba(0,0,0,.3);

border:1px solid rgba(255,255,255,.25);

}

h1{

color:white;

text-align:center;

margin-bottom:10px;

}

.subtitle{

text-align:center;

color:#ececec;

margin-bottom:25px;

}

.sender-info{

background:rgba(255,255,255,.12);

padding:14px;

border-radius:12px;

color:white;

margin-bottom:25px;

font-size:15px;

}

.sender-info strong{

margin-right:8px;

}

.input-group{

display:flex;

flex-direction:column;

margin-bottom:22px;

}

label{

color:white;

margin-bottom:8px;

font-weight:500;

}

input,
textarea{

padding:14px;

border:none;

outline:none;

border-radius:10px;

font-size:15px;

}

textarea{

resize:none;

}

input:focus,
textarea:focus{

box-shadow:0 0 0 3px rgba(255,255,255,.35);

}

button{

width:100%;

padding:16px;

border:none;

border-radius:12px;

background:#10b981;

color:white;

font-size:17px;

font-weight:600;

cursor:pointer;

transition:.3s;

}

button:hover{

background:#059669;

transform:translateY(-2px);

}

@media(max-width:700px){

.card{

padding:25px;

}

}