:root {
    --color-noordnacht: #0C0F0C;
    --color-antraciet: #20221E;
    --color-diep-bos: #353117;
    --color-mosgroen: #6C7055;
    --color-veldgoud: #775F38;
    --color-warm-zand: #9B815E;
    --color-mistcreme: #DBCEBC;

    --color-white: #FFFFFF;
    --color-black: #000000;

    --font-heading: "Mont", sans-serif;
    --font-body: "Helvetica", Arial, sans-serif;

    --font-size-base: 1rem;

    --line-height-base: 1.6;
    --line-height-heading: 1.1;

    --content-width: 90rem;         /* 1440px */
    --content-width-small: 60rem;   /* 960px */

    --page-padding: 1.25rem;        /* 20px */

    --space-xs: 0.5rem;             /* 8px */
    --space-sm: 0.75rem;            /* 12px */
    --space-md: 1rem;               /* 16px */
    --space-lg: 1.5rem;             /* 24px */
    --space-xl: 2rem;               /* 32px */
    --space-2xl: 3rem;              /* 48px */
    --space-3xl: 4.5rem;            /* 72px */
    --space-4xl: 6rem;              /* 96px */
    --space-5xl: 8rem;              /* 128px */

    --section-space: var(--space-3xl);

    --border-width: 1px;
    --border-width-strong: 2px;

    --border-color: rgba(219, 206, 188, 0.18);
    --border-color-strong: rgba(219, 206, 188, 0.35);

    --radius-xs: 0.125rem;          /* 2px */
    --radius-sm: 0.25rem;           /* 4px */
    --radius-md: 0.5rem;            /* 8px */
    --radius-lg: 1rem;              /* 16px */
    --radius-full: 9999px;


    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 400ms ease;

    --z-base: 1;
    --z-header: 1000;
    --z-dropdown: 1100;
    --z-overlay: 1500;
    --z-modal: 2000;
}

/* BASIC */

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

html,
body {
    margin: 0;
    padding: 0;
}

h1,
h2,
h3,
h4,
h5,
h6,
p,
ul,
ol,
figure,
blockquote {
    margin: 0;
}

ul,
ol {
    padding: 0;
}

img,
picture,
video,
canvas,
svg {
    display: block;
    max-width: 100%;
}

img {
    height: auto;
}

button,
input,
textarea,
select {
    font: inherit;
}

button {
    border: 0;
    padding: 0;
    background: none;
}

a {
    color: inherit;
    text-decoration: none;
}


/* BASE */

html {
    min-height: 100%;
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;

    background-color: var(--color-noordnacht);
    color: var(--color-mistcreme);

    font-family: var(--font-body);
    font-size: var(--font-size-base);
    font-weight: 400;
    line-height: var(--line-height-base);

    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}


/* TYPOGRAPHY */

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: var(--line-height-heading);
}

h1 {
    font-size: clamp(2.75rem, 6vw, 5.5rem);
}

h2 {
    font-size: clamp(2rem, 4vw, 3.5rem);
}

h3 {
    font-size: clamp(1.5rem, 2.5vw, 2.25rem);
}

h4 {
    font-size: clamp(1.125rem, 1.5vw, 1.5rem);
}

h5 {
    font-size: 1rem;
}

h6 {
    font-size: 0.875rem;
}

p {
    max-width: 70ch;
}


/* LAYOUT */

.container {
    width: min(
        calc(100% - (var(--page-padding) * 2)),
        var(--content-width)
    );

    margin-inline: auto;
}

.container--small {
    max-width: var(--content-width-small);
}

.section {
    padding-block: var(--section-space);
}

.section--small {
    padding-block: var(--space-2xl);
}

.section--large {
    padding-block: var(--space-4xl);
}

/* HEADER */

.site-header {
    width: 100%;
    position: relative;
    z-index: var(--z-header);
}

.site-header_inner {
    min-height: 5.5rem;

    display: flex;
    align-items: center;
    justify-content: space-between;
}

.site-header_logo {
    padding-block: var(--space-md);
    display: inline-flex;
    align-items: center;
    flex-shrink: 0;
}

.site-header_logo img {
    display: block;
    width: clamp(8rem, 11vw, 11rem);
    height: auto;
}

/* NAVIGATION */

.site_navigation {
    display: flex;
    align-items: center;

    gap: var(--space-2xl);
}

.site_navigation_list {
    display: flex;
    align-items: center;

    gap: var(--space-2xl);

    margin: 0;
    padding: 0;

    list-style: none;
}

.site_navigation_item {
    position: relative;
}

.site_navigation_link {
    position: relative;

    display: inline-flex;
    align-items: center;

    min-height: 3rem;

    color: var(--color-mistcreme);

    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 500;
    line-height: 1;

    white-space: nowrap;

    transition: color var(--transition-normal);
}

.site_navigation_link::after {
    content: "";

    position: absolute;

    left: 50%;
    bottom: 0.3rem;

    width: 1.5rem;
    height: var(--border-width-strong);

    background-color: currentColor;

    transform: translateX(-50%) scaleX(0);
    transform-origin: center;

    transition: transform var(--transition-normal);
}

.site_navigation_link:hover,
.site_navigation_link:focus-visible {
    color: var(--color-warm-zand);
}

.site_navigation_link:hover::after,
.site_navigation_link:focus-visible::after {
    transform: translateX(-50%) scaleX(1);
}

.site_navigation_link.is-active {
    color: var(--color-warm-zand);
}

@media (max-width: 64rem) {

    .site_navigation {
        position: absolute;

        top: 100%;
        left: 0;

        width: 100%;

        display: flex;
        flex-direction: column;
        align-items: stretch;

        gap: var(--space-xl);

        padding:
            var(--space-xl)
            var(--page-padding)
            var(--space-2xl);

        background-color: var(--color-noordnacht);

        border-top: var(--border-width) solid var(--border-color);

        opacity: 0;
        visibility: hidden;

        transform: translateY(-0.75rem);

        transition:
            opacity var(--transition-normal),
            transform var(--transition-normal),
            visibility var(--transition-normal);

        pointer-events: none;
    }

    .site_navigation.is-open {
        opacity: 1;
        visibility: visible;

        transform: translateY(0);

        pointer-events: auto;
    }
}

@media (max-width: 64rem) {

    .site_navigation_list {
        width: 100%;

        flex-direction: column;
        align-items: stretch;

        gap: 0;
    }

    .site_navigation_item {
        width: 100%;

        border-bottom: var(--border-width) solid var(--border-color);
    }

    .site_navigation_link {
        width: 100%;
        min-height: 3.75rem;

        justify-content: space-between;

        padding-inline: 0;
    }
}

@media (max-width: 64rem) {

    .site_navigation_link::after {
        display: none;
    }

    .site_navigation_link.is-active {
        color: var(--color-warm-zand);
    }
}

.site_navigation_arrow {
    width: 0.45rem;
    height: 0.45rem;

    margin-left: 0.5rem;

    border-right: var(--border-width) solid currentColor;
    border-bottom: var(--border-width) solid currentColor;

    transform: rotate(45deg) translateY(-0.1rem);

    transition: transform var(--transition-fast);
}

.site_navigation_item.has-dropdown {
    position: relative;
}

.site_navigation_dropdown {
    position: absolute;

    top: calc(100% - 0.25rem);
    left: 50%;

    min-width: 10rem;

    margin: 0;
    padding: var(--space-sm) 0;

    list-style: none;

    background-color: var(--color-antraciet);

    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-md);

    opacity: 0;
    visibility: hidden;

    transform:
        translateX(-50%)
        translateY(0.5rem);

    transition:
        opacity var(--transition-fast),
        transform var(--transition-fast),
        visibility var(--transition-fast);

    z-index: var(--z-dropdown);
}

.site_navigation_item.has-dropdown:hover .site_navigation_dropdown,
.site_navigation_item.has-dropdown:focus-within .site_navigation_dropdown {
    opacity: 1;
    visibility: visible;

    transform:
        translateX(-50%)
        translateY(0);
}

.site_navigation_dropdown_link {
    display: block;

    padding: 0.75rem 1rem;

    color: var(--color-mistcreme);

    font-size: 0.85rem;
    line-height: 1.3;

    white-space: nowrap;

    transition:
        background-color var(--transition-fast),
        color var(--transition-fast);
}

.site_navigation_dropdown_link:hover,
.site_navigation_dropdown_link:focus-visible {
    background-color: var(--color-mosgroen);
    color: var(--color-mistcreme);
}

.site_navigation_item.has-dropdown:hover .site_navigation_arrow,
.site_navigation_item.has-dropdown:focus-within .site_navigation_arrow {
    transform: rotate(225deg) translate(-0.1rem, -0.1rem);
}

.site_navigation_cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;

    gap: var(--space-sm);

    min-height: 3rem;
    padding-inline: var(--space-lg);

    background-color: var(--color-mosgroen);
    color: var(--color-mistcreme);

    border: var(--border-width) solid transparent;
    border-radius: var(--radius-sm);

    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 500;
    line-height: 1;

    white-space: nowrap;

    transition:
        background-color var(--transition-fast),
        color var(--transition-fast),
        border-color var(--transition-fast);
}

.site_navigation_cta:hover,
.site_navigation_cta:focus-visible {
    background-color: var(--color-veldgoud);
    color: var(--color-mistcreme);
}

.site_navigation_cta_arrow {
    width: 1rem;
    height: auto;

    flex-shrink: 0;

    transition: transform var(--transition-fast);
}

.site_navigation_cta:hover .site_navigation_cta_arrow,
.site_navigation_cta:focus-visible .site_navigation_cta_arrow {
    transform: translateX(0.25rem);
}

.site_navigation_cta:hover .site_navigation_cta_arrow,
.site_navigation_cta:focus-visible .site_navigation_cta_arrow {
    transform: translateX(0.25rem);
}

@media (max-width: 64rem) {

    .site_navigation_cta {
        width: 100%;
        min-height: 3.5rem;

        margin-top: var(--space-sm);
    }
}

.site_menu_toggle {
    display: none;
}

@media (max-width: 64rem) {

    .site-header_inner {
        min-height: 5.5rem;
    }

    .site_menu_toggle {
        position: relative;

        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;

        width: 3rem;
        height: 3rem;

        margin-left: auto;

        cursor: pointer;

        color: var(--color-mistcreme);

        z-index: calc(var(--z-header) + 2);
    }

    .site_menu_toggle_line {
        position: absolute;

        width: 1.6rem;
        height: 2px;

        background-color: currentColor;

        border-radius: var(--radius-full);

        transition:
            transform var(--transition-normal),
            opacity var(--transition-fast);
    }

    .site_menu_toggle_line:nth-child(1) {
        transform: translateY(-0.45rem);
    }

    .site_menu_toggle_line:nth-child(2) {
        transform: translateY(0);
    }

    .site_menu_toggle_line:nth-child(3) {
        transform: translateY(0.45rem);
    }
}

@media (max-width: 64rem) {

    .site_menu_toggle.is-open .site_menu_toggle_line:nth-child(1) {
        transform: rotate(45deg);
    }

    .site_menu_toggle.is-open .site_menu_toggle_line:nth-child(2) {
        opacity: 0;
    }

    .site_menu_toggle.is-open .site_menu_toggle_line:nth-child(3) {
        transform: rotate(-45deg);
    }
}



/* ACCESSIBILITY */

:focus-visible {
    outline: 2px solid var(--color-veldgoud);
    outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {

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


/* UTILITIES */

.visually-hidden {
    position: absolute;

    width: 1px;
    height: 1px;

    padding: 0;
    margin: -1px;

    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;

    border: 0;
}

.full-width {
    width: 100%;
}


/* RESPONSIVE */

@media (min-width: 48rem) {

    :root {
        --page-padding: 2rem;       /* 32px */
        --section-space: 5.5rem;    /* 88px */
    }
}

@media (min-width: 64rem) {

    :root {
        --page-padding: 2.5rem;     /* 40px */
    }
}

@media (min-width: 80rem) {

    :root {
        --page-padding: 3rem;       /* 48px */
        --section-space: 6.5rem;    /* 104px */
    }
}