style.css

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    list-style: none;
    text-decoration: none;
    border: 0;
}

:root {
    --text-color: white;
    --bg-url: url(assets/mobileDark.jpg);
    --stroke-color: rgba(255, 255, 255, 0.5);
    --surface-color: rgba(255, 255, 255, 0.05);
    --surface-color-hover: rgba(255, 255, 255, 0.02);
    --highlight-color: rgba(255, 255, 255, 0.2);
    --background-svg: url(assets/icon-moon-stars.svg);
}

.light {
    --text-color: black;
    --bg-url: url(assets/mobileLight.jpg);
    --stroke-color: rgba(0, 0, 0, 0.5);
    --surface-color: rgba(0, 0, 0, 0.05);
    --surface-color-hover: rgba(0, 0, 0, 0.1);
    --highlight-color: rgba(0, 0, 0, 0.1);
    --background-svg: url(assets/icon-sun.svg);
}

body * {
    font-family: "Inter", sans-serif;
}

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

#container {
    width: 90%;
    max-width: 588px;
    margin: auto;
    padding: 0 24px;
    color: var(--text-color);
}

#profile {
    /* text align é para alinha elementos do tipo inline */
    /* enquanto o margin auto alinha os elementos apenas elementos block */
    text-align: center;
    padding: 24px;
}

#profile img {
    width: 112px;
}

#profile p {
    font-weight: 500;
    line-height: 24px;
    padding-top: 5px;
}

#switch {
    position: relative;
    display: flex;
    align-items: center;
    width: 64px;
    margin: auto;
}

#switch button {
    position: absolute; /* para que o botão na largura da div switch*/
    cursor: pointer;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgb(255, 255, 255) var(--background-svg) no-repeat center;
    z-index: 1;
    animation: slide-left 0.3s;
}

#switch button:hover {
    transition: 0.2s ease-in-out;
    outline: 8px solid var(--highlight-color);
}

.light #switch button {
    /* forwards faz com que o botao não volte */
    animation: slide-right 0.3s forwards;
    box-shadow: 5px 5px 4px 2px var(--highlight-color);
}

#switch span {
    display: block;
    width: 64px;
    height: 24px;
    border-radius: 32px;
    background-color: var(--surface-color);
    border: var(--stroke-color) 1px solid;
}

ul {
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding: 24px 0;
}

ul li a {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px 24px;
    border: 1px solid var(--stroke-color);
    background: var(--surface-color);
    border-radius: 8px;
    font-weight: 500;
    transition: background 0.3s;
    color: var(--text-color);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

ul li a:hover {
    background-color: var(--surface-color-hover);
    border: 1.5px 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 0.3s;
    color: var(--text-color);
}

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

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

@media (min-width: 700px) {
    /* de 700px pra cima ira aplicar as seguintes regras css: */
    /* estamos trocando a imagem de fundo caso seja maior que 700px */
    :root {
        --bg-url: url(./assets/BG-desktopDark.jpg);
    }

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

@media (max-width: 375px) {
    /* de 375px pra baixo ira aplicar as seguintes regras css: */
    #profile img {
        width: 90px;
    }

    #container {
        width: 88%;
    }

    body {
        font-size: 13px;
    }

    ul li a {
        padding: 12px 4px;
    }
}

/* animação do toggle switch */

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

    to {
        left: 50%;
    }
}

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

    to {
        left: 0;
    }
}