/* Base layer of the store page: reset, text, buttons, header with navigation, footer, shared helpers. */

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 5.5rem;
  background: var(--bg);
}

body {
  margin: 0;
  min-height: 100vh;
  overflow-x: clip;
  background: var(--bg);
  color: var(--text);
  font: 400 var(--step-0)/1.55 var(--font-sans);
  font-optical-sizing: auto;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, p, ul, ol, dl, dd, figure, pre, address { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg { display: block; }
button { font: inherit; color: inherit; }
address { font-style: normal; }
code, pre { font-family: var(--font-mono); }

a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: .2em; }

:focus-visible {
  outline: 2px solid var(--light);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection { background: oklch(.82 .13 78 / .35); color: var(--text); }

.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: var(--space-2);
  left: var(--space-2);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-pill);
  background: var(--light);
  color: var(--light-ink);
  font-weight: 600;
  text-decoration: none;
  transform: translateY(-200%);
}
.skip-link:focus-visible { transform: none; }

.icon { width: 1em; height: 1em; flex: none; }

/* ---------- Shared text styles ---------- */

.eyebrow {
  font: 500 var(--step-label)/1.4 var(--font-mono);
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-quiet);
}

.section-title {
  margin-top: var(--space-2);
  max-width: 18ch;
  font-size: var(--step-4);
  font-weight: 640;
  line-height: 1.04;
  letter-spacing: -.028em;
  text-wrap: balance;
}
.section-title code {
  font-size: .82em;
  letter-spacing: -.04em;
  color: var(--light);
}

.section-lede {
  margin-top: var(--space-3);
  max-width: 52ch;
  color: var(--text-soft);
  font-size: var(--step-0);
  text-wrap: pretty;
}

/* ---------- Buttons ---------- */

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .55em;
  min-height: 48px;
  padding: 0 1.4rem;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-size: var(--step-small);
  font-weight: 600;
  letter-spacing: -.005em;
  text-decoration: none;
  cursor: pointer;
  transition: background-color var(--dur-fast) var(--ease-standard), border-color var(--dur-fast) var(--ease-standard), color var(--dur-fast) var(--ease-standard);
}
.button .icon { transition: transform var(--dur-moderate) var(--ease-standard); }
.button-primary { background: var(--light); color: var(--light-ink); }
.button-primary:hover { background: oklch(.87 .12 80); }
.button-quiet { border-color: var(--line-strong); color: var(--text); background: oklch(.18 .013 255 / .6); }
.button-quiet:hover { border-color: var(--text-quiet); background: var(--surface-raised); }
@media (hover: hover) {
  .button:hover .icon { transform: translateX(3px); }
}

/* ---------- Header ---------- */

.site-header {
  position: fixed;
  z-index: 50;
  inset: 0 0 auto;
  border-bottom: 1px solid transparent;
  transition: background-color var(--dur-moderate) var(--ease-standard), border-color var(--dur-moderate) var(--ease-standard);
}
.site-header.is-scrolled,
.site-header.is-open {
  background: oklch(.145 .011 255 / .86);
  border-bottom-color: oklch(.29 .014 255 / .7);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  backdrop-filter: blur(14px) saturate(140%);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  max-width: var(--page-max);
  height: 4.25rem;
  margin: 0 auto;
  padding: 0 var(--margin);
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  min-height: 44px;
  text-decoration: none;
}
.wordmark-mark { --mark-lit: var(--light); width: 22px; height: 22px; fill: var(--line-strong); }
.wordmark-name {
  font-size: 1.3rem;
  font-weight: 760;
  letter-spacing: -.035em;
  line-height: 1;
}

.maker {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  min-height: 44px;
  font: 500 var(--step-label)/1 var(--font-mono);
  color: var(--text-quiet);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--dur-fast) var(--ease-standard);
}
.maker:hover { color: var(--text); }
.maker-mark { width: 16px; height: 16px; }

.site-nav { margin-left: auto; }
.site-nav ul { display: flex; align-items: center; gap: .25rem; }
.site-nav a {
  display: inline-flex;
  align-items: center;
  gap: .3em;
  min-height: 44px;
  padding: 0 .8rem;
  border-radius: var(--radius-pill);
  font-size: var(--step-small);
  font-weight: 500;
  color: var(--text-soft);
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease-standard), background-color var(--dur-fast) var(--ease-standard);
}
.site-nav a:hover { color: var(--text); background: var(--surface); }
.site-nav .icon { width: .8em; height: .8em; }

.motion-switch {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  min-height: 36px;
  padding: 0 .9rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: none;
  font: 500 var(--step-label)/1 var(--font-mono);
  color: var(--text-soft);
  cursor: pointer;
  white-space: nowrap;
  transition: border-color var(--dur-fast) var(--ease-standard), color var(--dur-fast) var(--ease-standard);
}
.motion-switch:hover { border-color: var(--line-strong); color: var(--text); }
.motion-state { color: var(--text); }
.motion-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--light);
  box-shadow: 0 0 0 3px var(--light-glow);
  transition: background-color var(--dur-fast) var(--ease-standard), box-shadow var(--dur-fast) var(--ease-standard);
}
.motion-switch[aria-pressed="false"] .motion-dot { background: var(--text-quiet); box-shadow: none; }

.menu-button {
  display: none;
  align-items: center;
  gap: .6rem;
  min-height: 44px;
  padding: 0 .9rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: none;
  font-size: var(--step-small);
  font-weight: 500;
  cursor: pointer;
}
.menu-lines {
  position: relative;
  width: 14px;
  height: 8px;
  border-block: 1.5px solid currentColor;
  transition: transform var(--dur-moderate) var(--ease-standard);
}
.menu-button[aria-expanded="true"] .menu-lines { transform: rotate(90deg); }

/* Narrow: the maker keeps its name for screen readers, the eye gets the mark. */
@media (max-width: 1080px) {
  .maker-name {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip-path: inset(50%);
    white-space: nowrap;
  }
}

@media (max-width: 860px) {
  .header-inner { gap: var(--space-2); }
  .motion-switch { margin-left: auto; }
  .menu-button { display: inline-flex; }
  .js .site-nav {
    position: absolute;
    inset: 100% 0 auto;
    margin: 0;
    padding: var(--space-1) var(--margin) var(--space-3);
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity var(--dur-moderate) var(--ease-standard), transform var(--dur-moderate) var(--ease-standard), visibility 0s linear var(--dur-moderate);
  }
  .js .site-header.is-open .site-nav {
    opacity: 1;
    visibility: visible;
    transform: none;
    transition: opacity var(--dur-moderate) var(--ease-standard), transform var(--dur-moderate) var(--ease-standard), visibility 0s;
  }
  /* Open menu: an opaque header, because a child panel under a backdrop filter let the page show through. */
  .js .site-header.is-open {
    background: var(--bg);
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
  }
  .js .site-nav ul { flex-direction: column; align-items: stretch; }
  .js .site-nav a { font-size: var(--step-1); padding: .5rem 0; border-radius: 0; }
  .js .site-nav a:hover { background: none; }
  .no-js .site-nav { display: none; }
}

@media (max-width: 420px) {
  .menu-label {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip-path: inset(50%);
  }
  .menu-button { padding: 0 .85rem; min-width: 44px; justify-content: center; }
}

/* ---------- Footer ---------- */

.site-footer {
  border-top: 1px solid var(--line);
  background: var(--bg-deep);
  color: var(--text-soft);
  font-size: var(--step-small);
}
.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1.2fr 1fr;
  gap: var(--space-5) var(--gutter);
  max-width: var(--page-max);
  margin: 0 auto;
  padding: var(--space-6) var(--margin) var(--space-4);
}
.footer-brand p { margin-top: var(--space-2); max-width: 30ch; color: var(--text-quiet); }
.footer-address { line-height: 1.7; }
.footer-kreis { width: 22px; height: 22px; margin-bottom: var(--space-2); color: var(--text-soft); }
.footer-address a, .footer-links a { color: var(--text); text-decoration-color: var(--line-strong); }
.footer-address a { display: inline-block; min-height: 24px; }
.footer-address a:hover, .footer-links a:hover { text-decoration-color: var(--light); }
.footer-links { display: grid; gap: .1rem; align-content: start; }
.footer-links a { display: inline-flex; align-items: center; min-height: 32px; }
.footer-legal {
  grid-column: 1 / -1;
  padding-top: var(--space-3);
  border-top: 1px solid var(--line);
  font: 400 var(--step-label)/1.5 var(--font-mono);
  color: var(--text-quiet);
}

@media (max-width: 720px) {
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

/* ---------- Reveal on scroll (only once JS has armed it) ---------- */

.js .reveal-armed .reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity var(--dur-hero) var(--ease-enter), transform var(--dur-hero) var(--ease-enter);
}
.js .reveal-armed .reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal-armed .reveal { transform: none; transition: opacity 120ms linear; }
  .button .icon, .menu-lines { transition: none; }
}