body {
    /*
    background-image: url(./assets/bg-mobile.jpg);
    background-repeat: no-repeat;
    background-position: top center;
    background-size: cover;
    */
    /*
    na linha 11 foi colocado um atalho para todas as confgs decladas acima
    */
    background: url(./assets/bg-mobile.jpg) no-repeat top center/cover;
    background: url(./assets/avatar-light.png)
}

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

body {
    background: var(--bg-url) no-repeat top center/cover;
    height: 100%;
}

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

#container {
    width: 100%;
    max-width: 588px;
    margin: 56px auto 0px;
    padding: 0 24px;
}

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

#profile img {
    width: 150px;
}

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

#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;
}

.light #switch button{
    animation: slide-in .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 val(--stroke-color);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    border-radius: 9999px;
}

ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding: 24px 0px;
}

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-background-filter: blur (4px);
    text-decoration: none;
    font-weight: 500;    
    transition: background: 0.2s;
}

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

#social-links {
    display: flex;
    justify-content: center;    
    padding: 24px 0px;
    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;
    text-align: center;
}

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

    .light{
        --bg-url: url(./assets/bg-desktop-light.jpg);
    }
}

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

    to{
        left: 50%;
    }
}

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

    to{
        left: 0;
    }
}