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

body{

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

height:100vh;

display:flex;

justify-content:center;

align-items:center;

background-image:url("images/bg-desktop.jpg");
background-size:cover;
background-position:center;

}

/* mobile background */

@media(max-width:768px){

body{
background-image:url("images/bg-mobile.jpg");
}

}

/* main container */

.container{

text-align:center;

background:rgba(0,0,0,0.35);

backdrop-filter:blur(20px);

padding:40px;

border-radius:22px;

width:90%;

max-width:420px;

color:white;

border:1px solid rgba(255,255,255,0.15);

box-shadow:0 20px 60px rgba(0,0,0,0.45);

}

/* avatar chính */

.avatar{

position:relative;

width:140px;
height:140px;

margin:auto;

border-radius:50%;

padding:4px;

background:linear-gradient(
45deg,
#00f2ff,
#4facfe,
#00ffcc,
#00f2ff
);

background-size:300% 300%;

animation:avatarMainGlow 8s linear infinite;

transform:1.05;

box-shadow:

0 0 25px rgba(0,255,255,0.6),
0 0 45px rgba(0,255,255,0.35);

transition:0.3s;

}

.avatar img{

width:100%;
height:100%;

border-radius:50%;

object-fit:cover;

object-position:50% 20%;

display:block;

}

@keyframes avatarMainGlow{

0%{background-position:0% 50%;}
50%{background-position:100% 50%;}
100%{background-position:0% 50%;}

}

/* name */

.name{

margin-top:15px;

margin-bottom:30px;

}

/* social list */

.social-list{

display:flex;

flex-direction:column;

gap:12px;

}

/* social item */

.social-item{

display:flex;
align-items:center;

gap:14px;

text-decoration:none;
color:white;

padding:12px 18px;

border-radius:16px;

background:rgba(255,255,255,0.08);

backdrop-filter:blur(18px);
-webkit-backdrop-filter:blur(18px);

border:1px solid rgba(255,255,255,0.15);

box-shadow:

0 8px 20px rgba(0,0,0,0.35),
inset 0 0 10px rgba(255,255,255,0.08);

transition:all 0.25s ease;

width:100%;

}

.social-item:hover{

transform:translateY(-3px) scale(1.02);

background:rgba(255,255,255,0.14);

box-shadow:

0 15px 35px rgba(0,0,0,0.45),
inset 0 0 12px rgba(255,255,255,0.1);

}

/* avatar của từng social */

.social-avatar{

position:relative;

width:40px;
height:40px;

border-radius:50%;

flex-shrink:0;

padding:2px;

background:linear-gradient(
45deg,
#00f2ff,
#00ff9d,
#4facfe,
#00f2ff
);

background-size:300% 300%;

animation:avatarGlow 6s linear infinite;

}

.social-avatar img{

width:100%;
height:100%;

border-radius:50%;

object-fit:cover;

display:block;

}

@keyframes avatarGlow{

0%{background-position:0% 50%;}
50%{background-position:100% 50%;}
100%{background-position:0% 50%;}

}

/* text */

.social-item span{

font-size:20px;

}

/* youtube text */

.social-text{

display:flex;
flex-direction:column;
text-align:left;

}

.social-text small{

font-size:12px;
opacity:0.8;

}

.social-icon{

margin-left:auto;

font-size:20px;

opacity:0.85;

transition:all 0.2s ease;

}

.social-item:hover .social-icon{

transform:scale(1.25);

opacity:1;

}