/* Basic CSS Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
html, body {
    height: 100%;
    font-family: Arial, sans-serif;
}
img, video {
    max-width: 100%;
    height: auto;
}
ul, ol {
    list-style: none;
}
a {
    text-decoration: none;
    color: inherit;
}
button {
    background: none;
    border: none;
    cursor: pointer;
}
table {
    border-collapse: collapse;
    border-spacing: 0;
}

/* Styles */
body {
    font-family: var(--roboto);
    color: var(--white);
}
header,
section {
    padding-top: var(--gutter);
    padding-bottom: var(--gutter);
}
h1 {
    font-size: clamp(32px, 8vw, 96px);
    line-height: 100%;
}
a.link {
    color: var(--blue);
    display: inline-block;
    position: relative;
    padding-bottom: var(--link-underline-size);
}
a.link::before {
    content: "";
    width: 100%;
    height: var(--link-underline-size);
    background-color: var(--blue);
    border-radius: calc(var(--link-underline-size) / 2);
    position: absolute;
    bottom: 0;
    left: 0;
    display: block;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}
a.link:hover::before {
    transform: scaleX(1);
}
@media (min-width: 768px) {
    :root {
        --gutter: calc(var(--unit) * 4);
    }
}

/* structure */
safe-space {
    padding-left: var(--gutter);
    padding-right: var(--gutter);
    display: block;
}
content-size {
    max-width: 1200px;
    padding-left: var(--gutter);
    padding-right: var(--gutter);
    margin: 0 auto;
    display: block;
}
app-content {
    min-height: 100vh;
    background-image: url("../images/cover_landing_sonia.jpg");
    background-position: top center;
    background-size: cover;
    display: flex;
    flex-direction: column;
}

/* intro */
header h2 {
    opacity: .9;
}
.title {
    color: var(--blue);
    position: relative;
}
.title::before {
    content: "";
    width: 100vw;
    height: 5px;
    background-color: var(--blue);
    position: absolute;
    top: 50%;
    right: calc(100% + var(--gutter));
    transform: translateY(-50%);
}
.intro {
    font-size: 20px;
    max-width: 280px;
    margin-top: calc(var(--unit) * 2);
}
/* bullet points */
.bullet-points {
    display: flex;
    flex-direction: column;
    gap: calc(var(--divider-gap) * 3);
}
.bullet-points.--big {
    font-size: clamp(18px, 2.7vw, calc(var(--unit) * 4));
}
.bullet-points li {
    padding-bottom: calc(var(--divider-size) + var(--divider-gap));
    position: relative;
}
.bullet-points li::before {
    content: "";
    width: calc(var(--unit) * 8);
    height: 5px;
    background-color: var(--blue);
    position: absolute;
    bottom: 0;
    left: var(--divider-offset);
    display: block;
}
/* descr */
.description {
    max-width: var(--descr-max-width);
    display: flex;
    flex-wrap: wrap;
    gap: var(--descr-gap);
    margin-top: calc(var(--unit) * 6);
}
.description__content {
    width: calc(100% / var(--descr-num-elements) - var(--descr-gap) * (var(--descr-num-elements) - 1) / var(--descr-num-elements));
    display: flex;
    flex-direction: column;
    gap: calc(var(--unit) * 1);
    position: relative;
}
.description__content::before {
    content: "";
    width: calc(var(--unit) * 2);
    height: calc(var(--unit) * 2);
    position: absolute;
    display: block;
    border-top: var(--descr-border-size) solid var(--blue);
    border-left: var(--descr-border-size) solid var(--blue);
    top: calc(0px - var(--descr-gap) / 3);
    left: calc(0px - var(--descr-gap) / 3);
}
.description__content h3 {
    color: var(--white);
}

/* footer */
.footer__content {
    display: flex;
    flex-direction: column;
    gap: calc(var(--unit) * 1);
}