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

:root{
  --text-color: white;
  --bg-url:url(./assets/bg-mobile.jpg);
  --stroke-color:rgba(255,255,255,0.5);
  --surface-color:
  rgba(255,255,255,0.05);
  --surfae-color-hover:rgba(0,0,0,0.02);
  --highligh-color:rgba(0,0,0,0.1);
  --switch-bg-url: url(./assets/moon-stars.svg);
}

.light{
  --text-color: black;
  --bg-url:url(./assets/bg-mobile-light.jpg);
  --stroke-color:rgba(0,0,0,0.5);
  --surface-color:
  rgba(0,0,0,0.05);
  --surfae-color-hover:rgba(0,0,0,0.02);
  --highligh-color:rgba(0,0,0,0.1);
  --switch-bg-url: url(./assets/sun.svg);
}

body{
  background: var(--bg-url) no-repeat top center/cover;
}

body * {
  font-family: "Inter"sans-serif;
  color:var(--text-color );
}

#container{
  width: 360px;
  margin: 56px auto 0;
  padding: 0 24px;
}

#profile{
 text-align: center;
 padding: 24px;
}

#profile img{
  width: 112px;
  height: 112px;
  border-radius: 50%;
  margin: auto; 
  border: 2px solid var(--text-color);
}

#profile p{
  font-weight: 500;
  line-height: 24px;

}

#switch{
  position: relative;
  width: 64px;
  margin: 4px auto 0;
}

#switch button {
  width: 32px;
  height: 32px;
  background: white var(--switch-bg-url)no-repeat center;
  border: 0;
  border-radius: 50%;

  position: absolute;
  top: 50%;
  left: 0;
  z-index: 1;
  transform: translateY(-50%) translateX(0);
  transition:transform 0.3s;

}

.light #switch button{
  transform: translateY(-50%) translateX(100%);
}

#switch span{
  display: block;
  width: 64px;
  height: 24px;
  background: var(--surface-color);
  border: 1px solid var(--stroke-color);
  backdrop-filter: blur(4px);
  border-radius: 9999px;

}


ul{
  list-style: none;
 display: flex;
 flex-direction: column;
 
}

ul li a {
  display: flex;
  justify-content: center;
  padding: 16px 24px;

  background:var(--surface-color);
  border: 1px solid var(--stroke-color);
  border-radius: 8px;

  backdrop-filter: blur(4px);
  text-decoration:none ;
  gap: 16px;
  margin-bottom: 16px;
  margin-top: 24px;
  cursor: pointer;
  transition: background 0.5s;
}

/*pseudo-seletor*/
ul li a:hover{
  background: var(--surfae-color-hover)
  border 1.5px solid var(--text-color);
}

#social-links{
  display: flex;
  justify-content: center;
  gap: 15px;
  margin-top: 32px;
  padding: 24px 0;
  font-size: 24px;
}

#social-links a{
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 16px;
  border-radius: 50%;
  transition: background 0.2s;
}

#social-links a:hover{
  background:var(--highligh-color)
}

footer{
  text-align: center;
  padding: 24px 0;
}