@import url('https://fonts.googleapis.com/css2?family=Inter:ital,opsz,wght@0,14..32,100..900;1,14..32,100..900&display=swap');

:root {
    --radius: 0.75rem;
    --background: #09090B;
    --borders: #a1a1aa;
    --second-border: #2c2c2c;
    --white-default: #FAFAFA;
    --light-background: #FAFAFA;
    --light-borders: #2c2c2c;
    --light-second-border: #a1a1aa;
    --light-white-default: #09090B;
}


body {
  font-family: 'Inter', sans-serif;
  margin: 0;
  padding: 0;
  background-color: var(--background);
}

body.light-theme {
    background-color: var(--light-background);
    color: var(--light-white-default);
}

body.light-theme .intro h1,
body.light-theme .intro p,
body.light-theme .topic,
body.light-theme footer,
body.light-theme #search,
body.light-theme #theme-toggle,
body.light-theme .footer-social a {
    color: var(--light-white-default);
    border-color: var(--light-second-border);
}

body.light-theme .topic {
    background-color: var(--light-background);
}

body.light-theme .topic p {
    color: var(--light-borders);
}

body.light-theme #search {
    background-color: transparent;
}

body.light-theme #search::placeholder {
    color: var(--light-borders);
}

body.light-theme footer {
    border-top-color: var(--light-second-border);
}

body.light-theme .footer-social a {
    color: var(--light-white-default);
}

body.light-theme .footer-user-toggle {
    color: var(--light-white-default);
}

body.light-theme select {
    background-color: var(--light-background);
    color: var(--light-white-default);
}

body.light-theme #theme-toggle {
    background-color: var(--light-background);
    color: var(--light-white-default);
}

.container {
   max-width: 70rem;
    margin: 0 auto;
    padding: 0rem 1.5rem;
}

.intro {

    margin-top: 5rem;
 
}

.intro h1 {

    font-size: 3.75rem;
    color: var(--white-default);
    text-align: center;
    margin-bottom: 0.5rem;
}

.intro p {
    font-size: 1.25rem;
    color: var(--borders);
    text-align: center;
    max-width: 42rem;
    line-height: 1.75rem;
    margin: 0 auto;
}

#search {

    width: 100%;
    border: 1px solid var(--second-border);
    background-color: transparent;
    margin-top: 2rem;
    padding: 0.65rem;
    border-radius: var(--radius);
    color: var(--borders);
    font-size: 1rem;
}

/* the data-key attribute of the search */
#search [data-key] {
    color: var(--borders);
    font-size: 1rem;
}

.topic-container {

    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(21.75rem, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.topic {
    background-color: var(--background);
    border-radius: var(--radius);
    border: 1px solid var(--second-border);
    padding: 1rem;
    color: #FAFAFA;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
}

.topic:hover {
    
    transform: scale(1.03);
    transition: all 0.3s;
    border: 1px solid var(--borders);
}

/* ALSO SCALE THE IMAGE WITH A ZOOM EFFECT WHEN .topic is hovered */

.topic:hover img {
    transform: scale(1.1);
    transition: all 0.3s;
}


/* COPERTINA ARGOMENTO */
.topic div:first-child img {
    width: 100%;
    height: 15rem;
    object-fit: cover;
    border-radius: var(--radius);
    transition: all 0.3s;
}

.topic-img-wrapper {

    overflow: hidden;
    border-radius: var(--radius);
}

.topic p, h2 {

    text-align: left;
}

.topic h2 {

    font-size: 1.4rem;
    margin-bottom: -0.3rem;
}

.topic p {

    font-size: 1rem;
    color: var(--borders);
}

.topic p:nth-child(2) {

    font-weight: bold;
    font-size: 0.9rem;
}
.topic div {

    display: flex;
    align-items: center;
}

.topic div img {

    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    margin-right: 0.5rem;
}

footer {

    color: var(--white-default);
    display: flex;
    justify-content: space-around;
    align-items: center;
    padding-bottom: 3rem;
    padding-top: 1rem;
    margin-top: 3rem;
    border-top: 1px solid var(--second-border);
}

.footer-user-toggle {

    display: flex;
    align-items: center;
}

.footer-social a {

    text-decoration: none;
    color: var(--white-default);
    font-size: 1.5rem;
    margin-right: 0.5rem;
}

footer select {

    background-color: var(--background);
    color: var(--white-default);
    border: 0;
    font-size: 1rem;
    cursor: pointer;
}

#theme-toggle {

    background-color: var(--background);
    color: var(--white-default);
    border: 0;
    font-size: 1.1rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--radius);
    transition: all 0.3s;
}

#theme-toggle:hover {

    background-color: var(--second-border);
    transition: all 0.3s;
    border-radius: var(--radius);
}



/* footer media queries */

@media screen and (max-width: 36rem) {

    footer {

        flex-direction: column;
        padding-top: 2rem;
    }

}