* {
  
  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(225, 225, 225, 0.1);
   --surface-color-hover: rgba(0, 0, 0, 0.02);
   --highlight-color: rgba(225, 225, 225, 0.2);
   --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, 0.5);
  --surface-color-hover: rgba(255,255,255, 0.5);
  --highlight-color: rgba(0, 0, 0, 0,1);
  --switch-bg-url: url(./assets/sun.svg)
}

body {
  /*background: url(./assets/bg-mobile.jpg);
  background-repeat: no-repeat;
  background-position: center;
  background-size: cover;
  */
  /*usamos abreviado simplifica o código*/
  background: var(--bg-url) no-repeat center/cover;
}

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

#container {
  width: 100%;
  /*border: 1px solid red; pra quem está começando é bom pra adequar com a borda*/
  /*margin: auto;
  margin-top: 56px;
  margin-right: auto;
  margin-bottom:auto;
  margin-left: auto; podemos usar assim */
  max-width: 588px;
  margin: 56px auto 0px;
  padding:0 24px;
}

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

#profile img {
  width: 112px;
}

#profile p {
  font-weight: 500;
  line-height: 24px;
  margin-top: 8px;
}

/*switch*/

#switch{
  position: relative;
  width: 64px;

  margin: 4px auto;
}

#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%);
  animation: slide-back .4s forwards;
}

.light #switch button{
  animation: slide-in .4s forwards;
}

#switch span{
  display: block;
  width: 64px;
  height: 24px;

  background: var(--surface-color);
  border: 1px solid var(--stroke-color);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px) ;
  border-radius: 9999px;

}
  

/*Links */
ul {
  list-style: none;

  display: flex;
  flex-direction: column;
  gap: 16px;
  
  padding:24px;
}

ul li a {
  
  display: flex;
  align-items: center;
  justify-content: center;

  padding: 16px 24px;

  background: var(--surface-color);
  border: 1px solid var(--stroke-color);
  border-radius: 8px;
  
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);

  text-decoration: none ;
  font-weight: 500;
  transition: background all 0.2s;
}

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

/* social links*/

#social-links{
  display: flex;
  justify-content: center;
  gap: 32px;

  padding: 24px;

  font-size: 24px ;
}

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

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

@keyframes slide-in{
  from {
    left: 0;
  }
  to{
    left: 50%;
  }  
}

@keyframes slide-back{
  from{
    left: 50%;
  }
  to{
    left: 0;
  }
}