* {
    border: 0px;
    padding: 0px;
    box-sizing: border-box;
}
:root {
    --text-color: white;
    --bg-url: url(./assets/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/assets/moon-stars.svg);
}

.light {
    --text-color: black;
    --bg-url: url(./assets/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/assets/sun.svg);
    
}


 body {
   /* background-image: url(./assets/assets/bg-mobile.jpg);
    background-repeat: no-repeat;
    background-position: center ;
    background-size: cover;
    
   simplificarei esse código inteiro com uma tag "atalho" → */
   background: var(--bg-url) no-repeat top center/cover;
   height: 100vh;
    
 }
 body * {
     font-family: 'inter', Sans-Serif;
     /*color: #ffffff; → a forma no sistema hexadecimal */ 
     color: var(--text-color);
 }

 #house { 
   
    margin: 56px auto 0px;
    width: 100%;
    max-width: 588px;
    padding: 0 24px;
    
 }
/* #profile {
     text-align: center;
 }
 essa é uma maneira de transformar um centralizar um display "in line". se a tag pai for alterada, a tag filha também será de certa forma.
 */
 #profile {
     padding: 24px ;
     
 }
 

 #profile img {
    width: 120px;
    margin: auto;
    display: block;
 }
 
 #profile p {
     font-weight: 500;
     font-size: 16px;
     line-height: 24px;
     text-align: center;
     margin-top: 8px;
 }
 /*switch button*/
 
 #switch {
     position: relative;
     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;
     z-index: 1;
     top: 50%;
     left: 0;
     transform: translateY(-50%);
     
     animation: slide-out 0.2s;
 }
 .light #switch button {
    
    animation: slide-in 0.4s forwards;
 }
 
     #switch button:hover {
         outline: 8px solid var(--highlight-color);
     }
 
 
 
 
 #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 0;

     
 }
 ul li a {
     display: flex;
     
     justify-content: center;
     align-items: center;
     
     padding: 16px 24px;
     
     background: var(--surface-color);
     
     border: 1px solid var(--stroke-color);
     
     border-radius: 8px;
     
    -webkit-backdrop-filter: blur(4px);
    
    text-decoration: none;
    font-weight: 500;
    
    transition: background 0.2s;
 }
 
 ul li a: hover {
     background: var(--surface-color-hover);
     
     border: 1px solid var(--text-color);
     
 }
 
 #social-links {
     display: flex;
     justify-content: center;
     padding: 24px 0;
     font-size: 24px;
 }
 
 #social-links a{
     display: flex;
     align-items: center;
     justify-content: center;
     
     padding: 16px;
     border-radius: 50%;
     transition: background 0.2s;
 }
 
 
 
 #social-links a: hover {
     background: var(--highlight-color);
 }
 
 footer {
     text-align: center;
     font-size: 14px;
     padding: 24px 0;
 }
 
 
 /* media queries */
 
 @media (min-width: 700px) {
     
     :root {
         --bg-url: url(./assets/assets/bg-desktop.jpg);
     }
     
     .light { --bg-url: url(./assets/assets/bg-desktop-light.jpg);
     }
     
 }
 
 @keyframes slide-in {
     
     from {
         left: 0;
     }
     
     to {
         left: 50%;
        
     }
 }
 
 @keyframes slide-out {
     
     from {
         left: 50%;
     }
     
     to {
         left: 0;
     }
 }