html,
body {
    margin: 0;
}

* {
    scroll-behavior: smooth;
    hyphens: auto;
}

:root {
    --color-ink: #1c2b23;
    --color-surface: #ffffff;
    --color-surface-alt: #ebfef4;
    --color-deep: #355144;
    --color-accent: #00a86f;
    --color-ink-muted: #606b65;
    --color-on-deep: #ffffff;
    --color-on-deep-muted: #eeeeee;
    --color-scrim-top: rgba(28, 43, 35, 0.35);
    --color-scrim-bottom: rgba(28, 43, 35, 0.65);
    --color-accent-on-deep: #00a86f;
    --color-field-border: #cccccc;

    --width-outline: 0;
    --width-focus: 2px;
    --link-decoration: none;

    --space-xs: 0.5em;
    --space-sm: 1em;
    --space-md: 1.5em;
    --space-lg: 2.5em;
    --space-xl: 4em;

    --width-prose: 38em;
    --width-wide: 68em;
}

@media (prefers-contrast: more) {
    :root:not([data-contrast="normal"]) {
        --color-ink: #000000;
        --color-ink-muted: #000000;
        --color-surface-alt: #f2f2f2;
        --color-deep: #000000;
        --color-accent: #000000;
        --color-accent-on-deep: #ffffff;
        --color-on-deep-muted: #ffffff;
        --color-scrim-top: #000000;
        --color-scrim-bottom: #000000;
        --color-field-border: #000000;

        --width-outline: 2px;
        --width-focus: 3px;
        --link-decoration: underline;
    }
}

:root[data-contrast="high"] {
    --color-ink: #000000;
    --color-ink-muted: #000000;
    --color-surface-alt: #f2f2f2;
    --color-deep: #000000;
    --color-accent: #000000;
    --color-accent-on-deep: #ffffff;
    --color-on-deep-muted: #ffffff;
    --color-scrim-top: #000000;
    --color-scrim-bottom: #000000;
    --color-field-border: #000000;

    --width-outline: 2px;
    --width-focus: 3px;
    --link-decoration: underline;
}

body {
    font-family: 'Asap', sans-serif;
    font-size: clamp(16px, 14px + 0.25vw, 20px);
    line-height: 1.25;
    color: var(--color-ink);
    background: var(--color-surface);
}

a {
    color: var(--color-accent);
    text-decoration: var(--link-decoration);
}

address {
    font-style: normal;
}

h1, h2 {
    font-family: 'Alegreya', serif;
    font-weight: 600;
    hyphens: none;
}

h3, h4, h5, h6 {
    font-family: 'Alegreya Sans', sans-serif;
    font-weight: 600;
    hyphens: none;
}

.pure-menu.pure-menu-fixed {
    z-index: 4;
}

.splash-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 88%;
    overflow: hidden;
    z-index: 1;
    background:
        linear-gradient(180deg, var(--color-scrim-top), var(--color-scrim-bottom)),
        url(splash.png) center / cover no-repeat;
}

.splash {
    position: absolute;
    top: 50%;
    right: 0;
    bottom: 0;
    left: 0;
    width: 80%;
    margin: auto;
    transform: translateY(-66%);
}

.splash h1 {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    color: var(--color-on-deep);
    margin: 0;
}

.splash h2 {
    font-family: 'Asap', sans-serif;
    font-weight: 400;
    font-size: clamp(1rem, 2vw, 1.4rem);
    color: var(--color-on-deep-muted);
    margin: 0;
}

.content-wrapper {
    position: absolute;
    top: 87%;
    width: 100%;
    min-height: 12%;
    background: var(--color-surface);
    z-index: 2;
}

.home-menu {
    display: flex;
    justify-content: space-between;
    background: var(--color-deep);
}

.home-menu .pure-menu-link {
    color: var(--color-on-deep-muted);
    position: relative;
}

.home-menu .pure-menu-link::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 2px;
    border-radius: 2px;
    background-color: var(--color-accent-on-deep);
    bottom: 4px;
    left: 0;
    transform-origin: right;
    transform: scaleX(0);
    transition: transform .3s ease-in-out;
}

.home-menu .pure-menu-link:hover::before {
    transform-origin: left;
    transform: scaleX(1);
}

.home-menu .pure-menu-link:hover,
.home-menu .pure-menu-link:focus {
    color: var(--color-on-deep);
    background: none;
}

.contrast-toggle {
    display: flex;
    align-items: center;
    align-self: center;
    margin-left: auto;
    padding: 0.5em 1em;
    border: 0;
    background: none;
    color: var(--color-on-deep-muted);
    cursor: pointer;
}

.contrast-toggle:hover,
.contrast-toggle:focus-visible {
    color: var(--color-on-deep);
}

.contrast-toggle:focus-visible {
    outline: var(--width-focus) solid var(--color-accent-on-deep);
    outline-offset: -2px;
}

.contrast-icon {
    width: 1.5em;
    height: 1.5em;
}

.home-menu .pure-menu-list {
    margin-left: auto;
}

.home-menu .pure-menu-list + .contrast-toggle {
    margin-left: 0;
}

.menu-toggle {
    display: none;
    width: 28px;
    height: 20px;
    padding: 0;
    border: 0;
    background: none;
    position: relative;
    cursor: pointer;
}

.menu-toggle .bar {
    background-color: var(--color-on-deep);
    display: block;
    width: 100%;
    height: 2px;
    border-radius: 2px;
    position: absolute;
    left: 0;
    transition: transform 0.3s ease;
}

.menu-toggle .bar:first-child {
    top: 4px;
}

.menu-toggle .bar:last-child {
    top: 14px;
}

.home-menu.menu-open .menu-toggle .bar:first-child {
    transform: translateY(5px) rotate(45deg);
}

.home-menu.menu-open .menu-toggle .bar:last-child {
    transform: translateY(-5px) rotate(-45deg);
}

@media (max-width: 48em) {
    .home-menu {
        flex-wrap: wrap;
    }

    .menu-toggle {
        display: block;
        align-self: center;
        margin-left: auto;
    }

    .home-menu .pure-menu-list {
        order: 1;
        display: none;
        width: 100%;
        overflow-x: auto;
        white-space: nowrap;
        -webkit-overflow-scrolling: touch;
    }

    .home-menu.menu-open .pure-menu-list {
        display: block;
    }
}

.pure-menu-heading {
    color: var(--color-on-deep-muted);
}

#leistungen, #tech-stack {
    background: var(--color-surface-alt);
}

section {
    padding-block: clamp(3em, 8vw, 6em);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-lg);
}

section > * {
    max-width: var(--width-prose);
}

.pure-g {
    width: 100%;
    max-width: var(--width-wide);
}

.pure-g > [class*="pure-u-"] {
    padding: var(--space-md);
    box-sizing: border-box;
}

#kontakt .pure-g {
    align-items: center;
}

.card {
    background: var(--color-surface);
    border: var(--width-outline) solid var(--color-ink);
    padding: var(--space-lg);
    box-sizing: border-box;
    height: 100%;
    text-align: center;

    & > * {
        hyphens: manual;
    }
}

.card-heading {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.card-icon {
    width: 1.75em;
    height: 1.75em;
    flex-shrink: 0;
    color: var(--color-accent);
}

@media (min-width: 48em) {
    .card-heading {
        flex-direction: column;
    }
}

p, #about ul {
    color: var(--color-ink-muted);
    li:not(:last-child) {
        margin-bottom: 0.5em;
    }
}

.pure-form-stacked .pure-checkbox {
    font-weight: normal;
}

.pure-form-stacked .pure-checkbox input[type="checkbox"] {
    float: left;
    margin: 0.25em 0.5em 0 0;
}

input:not([type=checkbox]), textarea {
    width: 100%;
    resize: none;
}

.pure-form input:not([type=checkbox]), .pure-form textarea {
    border-color: var(--color-field-border);
}

.pure-form input:not([type=checkbox]):focus, .pure-form textarea:focus {
    border-color: var(--color-field-border);
    outline: var(--width-focus) solid var(--color-accent);
    outline-offset: 2px;
}

.button-primary {
    background: var(--color-accent);
    color: var(--color-on-deep);
}

.site-footer {
    background: var(--color-deep);
    padding: var(--space-md) var(--space-sm);
    text-align: center;
}

.site-footer nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-xs) var(--space-md);
}

.site-footer a {
    color: var(--color-on-deep-muted);
    text-decoration: none;
}

.site-footer a:hover,
.site-footer a:focus {
    color: var(--color-on-deep);
    text-decoration: underline;
    text-decoration-color: var(--color-accent-on-deep);
    text-underline-offset: 0.3em;
}