* {
  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);
  --surface-color-hover: rgba(0, 0, 0, 0.02);
  --highlight-color: rgba(255, 255, 255, 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, 0.05);
  --surface-color-hover: rgba(0, 0, 0, 0.02);
  --highlight-color: rgba(0, 0, 0, 0.1);
  --switch-bg-url: url(./assets/sun.svg);
}
body {
  background-image: var(--bg-url);
  background-repeat: no-repeat;
  background-position: top center;
  background-size: cover;
  height: 100vh; /*tamanho total da tela*/
}
body * {
  font-family: "Inter", sans-serif;
  color: var(--text-color);
}
/*obs not is height in container, to bigeer automatic*/
#container {
  width: 100%; /*Fica dinamico*/
  max-width: 588px;
  margin: 56px auto 0px; /*primer is top, second is right and left and tercer is bottom*/
  padding: 0 24px;
}
/*Profile*/
#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; /*It makes the absolute element within the div respect its limitations, that is, it is relative to the father*/
  width: 64px;
  margin: 4px auto;
}

#switch button {
  height: 32px;
  width: 32px;
  background: white var(--switch-bg-url) no-repeat center;
  border: 0;
  border-radius: 50%;
  position: absolute; /*makes the element absolute as if climbing a floor, it is free on the screen*/

  left: 0;
  z-index: 1;
  transform: translateY(-50%);
  top: 50%;

  animation: slide-back .2s;
}
#switch button:hover{
outline: 8px solid var(--highlight-color);
}

.light #switch button {
  animation: slide-in .2s 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;
  padding: 24px 0;
  flex-direction: column;
  gap: 16px;
}
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); /*embassa com um blur*/
  -webkit-backdrop-filter: blur(4px);

  text-decoration: none;
  font-weight: 500;

  transition: background 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: 16px;
  padding: 24px 0;
  font-size: 24px;
}
#social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  transition: background 0.2s;
  border-radius: 50%;
}
#social-links a:hover {
  background: var(--highlight-color);
}
footer {
  padding: 24px 0;
  text-align: center;
}
footer a {
  text-decoration: none;
  transition: font 0.2s;
}
footer a:hover {
  text-decoration: underline;
  font-size: larger;
}

/* media queries*/
@media (min-width: 700px) {
  :root {
    --bg-url: url(./assets/bg-desktop.jpg);
  }
  .light {
    --bg-url: url(./assets/bg-desktop-light.jpg);
  }
}

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

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