/* Box sizing rules */
*,
*::before,
*::after {
    box-sizing: border-box;
}

/* Remove default margin */
body,
h1,
h2,
h3,
h4,
p,
ul[class] ol[class] figure,
blockquote,
dl,
dd {
    margin: 0;
}

/* Remove default padding */
ul[class] ol[class] {
    padding: 0;
}

/* Remove list styles on ul, ol elements with a class attribute */
ul[class],
ol[class] {
    list-style: none;
}

/* Set core root defaults */
html:focus-within {
    scroll-behavior: smooth;
}

/* Set core body defaults */
body {
    min-height: 100vh;
    text-rendering: optimizeSpeed;
    line-height: 1.5;
}

/* A elements that don't have a class get default styles */
a:not([class]) {
    text-decoration-skip-ink: auto;
}

/* Make images easier to work with */
img,
picture {
    max-width: 100%;
    display: block;
}

/* Inherit fonts for inputs and buttons */
input,
button,
textarea,
select {
    font: inherit;
}

/* Blur images when they have no alt attribute */
img:not([alt]) {
    border: 3px dashed hsl(0, 100%, 50%);
}

/* Remove all animations, transitions and smooth scroll for people that prefer not to see them */
@media (prefers-reduced-motion: reduce) {
    html:focus-within {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* ************************* */
/*         Variables         */
/* ************************* */

:root {
    --clr-neutral-000: hsl(0, 0%, 100%);
    --clr-neutral-400: hsl(0, 0%, 55%);
    --clr-neutral-500: hsl(0, 0%, 41%);
    --clr-neutral-900: hsl(0, 0%, 0%);

    --ff-1: 'Alata', sans-serif;
    --ff-2: 'Josefin Sans', sans-serif;

    --base-size: 15px;

    --ratio: 1.414;

    --scale-100: calc(var(--scale-200) / var(--ratio));
    --scale-200: calc(var(--scale-300) / var(--ratio));
    --scale-300: calc(var(--scale-400) / var(--ratio));
    --scale-400: var(--base-size);
    --scale-500: calc(var(--scale-400) * var(--ratio));
    --scale-600: calc(var(--scale-500) * var(--ratio));
    --scale-700: calc(var(--scale-600) * var(--ratio));
    --scale-800: calc(var(--scale-700) * var(--ratio));
    --scale-900: calc(var(--scale-800) * var(--ratio));

    --br-sm: 36em;
    --br-md: 48em;
    --br-lg: 62em;
}

/* ************************* */
/*       General style       */
/* ************************* */

body {
    font-family: var(--ff-1);
    font-size: var(--scale-400);
    font-weight: 400;
    color: var(--clr-neutral-400);
}

header {
    background-color: var(--clr-neutral-900);

    height: 100vh;
}

@media (min-width: 36em) {
    header {
        height: 60vh;
    }
}

footer {
    background-color: var(--clr-neutral-900);
}

ul {
    padding: 0;
    margin: 0;
}

a {
    text-decoration: none;
    position: relative;
}

picture img {
    width: 100%;
}

[data-visible="false"] {
    display: none;
}

/* ************************* */
/*        Composition        */
/* ************************* */

.column {
    display: flex;
    flex-direction: column;
}

.column:only-child {
    block-size: 100%;
}

/*-----------------------------------------------------------------------*/

.row {
    display: flex;
    flex-wrap: wrap;

    --flex-grow: 0;
    --break: 0;
}

.row>* {
    flex-grow: var(--flex-grow, 0);
    flex-basis: calc((var(--break) - 100%) * 999);
}

.break-300px {
    --break: 300px;
    --flex-grow: 1;
}

.break-770px {
    --break: 770px;
    --flex-grow: 1;
}

@media (min-width: 36em) {
    .md\:break-300px {
        --break: 300px;
        --flex-grow: 1;
    }
}

/*-----------------------------------------------------------------------*/

.grid {
    width: 100%;
    display: grid;
    grid-gap: 1.5rem;
    --minimum: 25ch;
}

@supports (width: min(var(--minimum), 100%)) {
    .grid {
        grid-template-columns: repeat(auto-fit, minmax(min(var(--minimum), 100%), 1fr));
    }
}

/*-----------------------------------------------------------------------*/

.center {
    box-sizing: content-box;
    display: block;
    margin-left: auto;
    margin-right: auto;
    max-width: 1140px;
}

.gutters-m {
    padding-inline: 1.5rem;
}

/* ************************* */
/*          Blocks           */
/* ************************* */

.logo {
    width: 150px;
}

/* ---------------------------------------------------- */

.hero {
    position: absolute;
    top: 50%;
    left: 1.5rem;
    right: 1.5rem;

    transform: translate(0%, -50%);
}

@media (min-width: 36em) {
    .hero {
        position: static;
        transform: translate(0%, 0%);

        margin-top: calc(2rem + 2.5vw);
        max-width: 90%;
    }
}

@media (min-width: 48em) {
    .hero {
        max-width: 60%;
    }
}

@media (min-width: 62em) {
    .hero {
        max-width: 50%;
    }
}

/* ---------------------------------------------------- */

.header-background-image {
    width: 100vw;
    height: 100vh;

    position: absolute;
}

@media (min-width: 36em) {
    .header-background-image {
        height: 60vh;
    }
}

/* ---------------------------------------------------- */

.header-nav-list {
    position: absolute;
    top: 200%;
    left: 0;

    max-width: 299px;
}

.header-nav-list[data-visible="false"] {
    display: none;
}

.header-nav-list a {
    color: var(--clr-neutral-000);
    font-family: var(--ff-2);
    font-weight: 300;
    font-size: var(--scale-500);

    text-transform: uppercase;
}

@media (min-width: 36em) {
    .header-nav-list {
        position: static;
        max-width: none;
    }

    .header-nav-list a {
        font-family: var(--ff-1);
        font-weight: 400;
        font-size: calc(var(--scale-400) + 0.2vw);
        font-size: var(--scale-400);

        text-transform: none;
    }
}

/* ---------------------------------------------------- */

.grid p {
    position: absolute;
    bottom: calc(1rem + 0.5vw);
    left: calc(1rem + 0.5vw);
}

.grid img {
    transition: all 0.3s ease;
    opacity: 1;
}

.grid p {
    transition: all 0.3s ease;
}

.grid li:hover img {
    opacity: 0.3;
}

.grid li:hover p {
    color: var(--clr-neutral-900)
}

/* ---------------------------------------------------- */

.header-nav-btn {
    background: url(images/icon-hamburger.svg) no-repeat center;
    width: 35px;
    height: 35px;

    border: none;
}

.header-nav-btn[data-visible="false"] {
    display: none;
}

.header-nav-btn[aria-expanded="true"] {
    background: url(images/icon-close.svg) no-repeat center;
}

@media (pointer:fine) {
    .header-nav-btn:hover {
        cursor: pointer;
    }
}

/* ---------------------------------------------------- */

.button {
    background-color: var(--clr-neutral-000);
    border: 1px solid var(--clr-neutral-900);
    color: var(--clr-neutral-900);
    letter-spacing: 0.3em;
    text-transform: uppercase;
    padding: 0.5rem;
    width: 150px;

    transition: all 0.2s ease;
}

@media (pointer:fine) {
    .button:hover {
        color: var(--clr-neutral-000);
        background-color: var(--clr-neutral-900);
    }
}

/* ---------------------------------------------------- */

@media (min-width: 36em) {
    .description-section {
        background-color: var(--clr-neutral-000);

        position: absolute;
        bottom: 0;
        right: 0;

        max-width: 60ch;
    }
}

/* ************************* */
/*         Utilities         */
/* ************************* */

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

.main-axis-center {
    justify-content: center;
}

.main-axis-space-between {
    justify-content: space-between;
}

.cross-axis-center {
    align-items: center;
}

.cross-axis-center-self {
    align-self: center;
}

.gap-sm {
    gap: calc(0.5rem + 0.5vw);
}

.gap-m {
    gap: calc(1rem + 1.5vw);
}

.gap-l {
    gap: 3rem;
}

.gap-xl {
    gap: 5rem;
}

.pad-m {
    padding: 1.5rem;
}

.pad-block-m {
    padding-block: 2rem;
}

.pad-block-l {
    padding-block: 5rem;
}

.center-text {
    text-align: center;
}

.uppercase {
    text-transform: uppercase;
}

.ff-2 {
    font-family: var(--ff-2);
}

.fw-light {
    font-weight: 300;
}

.fw-regular {
    font-weight: 400;
}

.fs-400 {
    font-size: var(--scale-400);
}

.fs-500 {
    font-size: calc(var(--scale-500) + 0.5vw);
}

.fs-600 {
    font-size: calc(var(--scale-600) + 0.5vw);
}

.fs-700 {
    font-size: clamp(var(--scale-600), 10.5vw, var(--scale-800));
}

.clr-n-000 {
    color: var(--clr-neutral-000);
}

.clr-n-900 {
    color: var(--clr-neutral-900);
}

.with-border {
    border: 1px solid var(--clr-neutral-000);
}

.line-height {
    line-height: 1;
    vertical-align: bottom;
}

.relative {
    position: relative;
}

/* Primary Input is a fine pointer device such as a mouse or stylus */
@media (pointer:fine) {
    .auto-underscore::after {
        content: '';
        position: absolute;
        left: 50%;
        bottom: -10px;

        width: 0px;
        height: 2px;
        background-color: var(--clr-neutral-000);

        transform: translate(-50%, 0%);
        transition: width 0.2s ease;
    }

    .auto-underscore:hover::after {
        width: 30px;
    }
}

@media (min-width: 36em) {
    .md\:gap-m {
        gap: calc(1rem + 1.5vw);
    }

    .md\:main-axis-space-between {
        justify-content: space-between;
    }

    .md\:cross-axis-start {
        align-items: flex-start;
    }

    .md\:cross-axis-end {
        align-items: flex-end;
    }

    .md\:left-text {
        text-align: left;
    }

    .md\:pad-top-left {
        padding-top: calc(3rem + 0.5vw);
        padding-right: 0;
        padding-bottom: 0;
        padding-left: calc(3rem + 0.5vw);
    }
}