/* Open Eyes website. No external requests: system fonts only, every asset is local. */

:root {
  --color-page: #eef2f7;
  --color-surface: #ffffff;
  --color-surface-sunken: #e3e9f1;
  --color-ink: #17203a;
  --color-ink-muted: #56607a;
  --color-line: #cfd7e3;
  --color-accent: #2c43c4;
  --color-accent-ink: #ffffff;
  --color-ring: #ffd60a;
  --color-ring-ink: #3a2f00;
  --color-fixed: #1f9d48;
  --color-fixed-bright: #34c759;
  --color-todo: #fff3b0;
  --color-todo-ink: #5a4600;

  --font-display: ui-rounded, "SF Pro Rounded", "Nunito", "Varela Round", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-body: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  --step--1: 0.875rem;
  --step-0: 1.0625rem;
  --step-1: 1.25rem;
  --step-2: 1.5rem;
  --step-3: 2rem;
  --step-4: clamp(2.25rem, 1.6rem + 3vw, 3.5rem);

  --radius-photo: 6px;
  --radius-panel: 20px;
  --radius-pill: 999px;
  --page-gutter: 16px;
  --content-width: 72rem;
  --text-width: 40rem;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-page: #0f1528;
    --color-surface: #182039;
    --color-surface-sunken: #121a30;
    --color-ink: #e9edf6;
    --color-ink-muted: #a3acc2;
    --color-line: #2c365a;
    --color-accent: #8b9cff;
    --color-accent-ink: #0f1528;
    --color-fixed: #4fd57a;
    --color-todo: #4a3d00;
    --color-todo-ink: #ffe680;
  }
}
:root[data-theme="dark"] {
  --color-page: #0f1528;
  --color-surface: #182039;
  --color-surface-sunken: #121a30;
  --color-ink: #e9edf6;
  --color-ink-muted: #a3acc2;
  --color-line: #2c365a;
  --color-accent: #8b9cff;
  --color-accent-ink: #0f1528;
  --color-fixed: #4fd57a;
  --color-todo: #4a3d00;
  --color-todo-ink: #ffe680;
}

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

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--color-page);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--step-0);
  line-height: 1.6;
  overflow-x: hidden;
}

h1, h2, h3 {
  font-family: var(--font-display);
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin: 0 0 0.5em;
  text-wrap: balance;
}
h1 { font-size: var(--step-4); font-weight: 800; }
h2 { font-size: var(--step-3); font-weight: 750; }
h3 { font-size: var(--step-1); font-weight: 700; }
p { margin: 0 0 1em; }
p, li { text-wrap: pretty; }

a { color: var(--color-accent); text-underline-offset: 0.18em; }
a:hover { text-decoration-thickness: 2px; }

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

img, svg { max-width: 100%; }

.skip-link {
  position: absolute;
  left: var(--page-gutter);
  top: -100px;
  background: var(--color-surface);
  padding: 0.5rem 1rem;
  border-radius: 8px;
  z-index: 10;
}
.skip-link:focus { top: 8px; }

.wrap {
  width: 100%;
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 var(--page-gutter);
}
@media (min-width: 720px) { :root { --page-gutter: 32px; } }

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

.site-header { padding: 18px 0; }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--step-1);
  color: var(--color-ink);
  text-decoration: none;
}
.brand img { width: 34px; height: 34px; flex: none; border-radius: 8px; }

.site-nav ul { list-style: none; margin: 0; padding: 0; display: flex; gap: 4px 20px; flex-wrap: wrap; }
.site-nav a { color: var(--color-ink-muted); text-decoration: none; font-weight: 600; font-size: var(--step--1); padding: 6px 0; }
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--color-ink); }
.site-nav a[aria-current="page"] { box-shadow: inset 0 -3px 0 var(--color-ring); }

.language-switch { display: flex; align-items: center; gap: 8px; font-size: var(--step--1); font-weight: 600; color: var(--color-ink-muted); }
.language-switch a { color: var(--color-ink-muted); text-decoration: none; padding: 6px 0; }
.language-switch a:hover, .language-switch a[aria-current] { color: var(--color-ink); }
.language-switch a[aria-current] { box-shadow: inset 0 -3px 0 var(--color-ring); }
@media (max-width: 719px) {
  .language-switch { order: 2; }
  .site-nav { order: 3; flex-basis: 100%; }
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 52px;
  padding: 0 24px;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  color: var(--color-accent-ink);
  font: 700 var(--step-0) / 1 var(--font-display);
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
}
.button:hover { filter: brightness(1.08); }
.button:disabled { background: var(--color-surface-sunken); color: var(--color-ink-muted); cursor: default; filter: none; }
.button.is-quiet { background: transparent; color: var(--color-ink); border-color: var(--color-line); }

.store-buttons { display: flex; flex-wrap: wrap; gap: 12px; margin: 8px 0 12px; }
.store-badge { display: inline-block; border-radius: 9px; line-height: 0; }
.store-badge img { display: block; height: 54px; width: auto; }
.store-badge:hover img { opacity: 0.85; }
.availability-note { color: var(--color-ink-muted); font-size: var(--step--1); }

/* ---- Hero -------------------------------------------------------------------------------- */

.hero { padding: 24px 0 64px; }
.hero .wrap { display: grid; gap: 40px; align-items: center; }
@media (min-width: 960px) { .hero .wrap { grid-template-columns: 1fr 1.05fr; gap: 56px; } }
.hero h1 { max-width: 14ch; }
.hero-lede { font-size: var(--step-1); color: var(--color-ink-muted); max-width: 35rem; }

/* The live demo: the app's own editor in miniature. */
.demo {
  background: var(--color-surface);
  border-radius: var(--radius-panel);
  padding: 16px;
  box-shadow: 0 1px 0 var(--color-line), 0 24px 48px -28px rgba(23, 32, 58, 0.45);
}
.demo-photo { position: relative; border-radius: var(--radius-photo); overflow: hidden; background: #b9d4ea; }
.demo-photo svg { display: block; width: 100%; height: auto; }

.demo-face {
  position: absolute;
  border: 3px solid rgba(255, 255, 255, 0.85);
  border-radius: 18px;
  background: transparent;
  cursor: pointer;
  padding: 0;
}
.demo-face.is-improvable { border-color: var(--color-ring); border-width: 4px; }
.demo-face.is-fixed { border-color: var(--color-fixed-bright); border-width: 4px; }
.demo-face.is-selected { box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.7); }
.demo-face .badge {
  position: absolute;
  top: -13px;
  right: -13px;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  display: none;
  place-items: center;
  color: #1a1a1a;
}
.demo-face .badge svg { width: 16px; height: 16px; }
.demo-face.is-improvable .badge { display: grid; background: var(--color-ring); }
.demo-face.is-fixed .badge { display: grid; background: var(--color-fixed-bright); }
.demo-face .badge-fixed, .demo-face.is-fixed .badge-improvable { display: none; }
.demo-face.is-fixed .badge-fixed { display: block; }

@media (prefers-reduced-motion: no-preference) {
  .demo-face.is-improvable { animation: ring-pulse 2.4s ease-in-out 1s 2; }
  @keyframes ring-pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(255, 214, 10, 0); }
    50% { box-shadow: 0 0 0 8px rgba(255, 214, 10, 0.45); }
  }
}

.demo-hint { margin: 12px 4px 4px; font-weight: 600; min-height: 1.6em; }

.demo-sheet {
  margin-top: 8px;
  border-top: 1px solid var(--color-line);
  padding: 14px 4px 4px;
}
.demo-sheet[hidden] { display: none; }
.demo-sheet h3 { font-size: var(--step-0); margin-bottom: 10px; }
.demo-sheet .region-label { font-weight: 700; margin: 12px 0 2px; }
.demo-sheet .region-help { color: var(--color-ink-muted); font-size: var(--step--1); margin: 0 0 8px; }
.demo-sheet .button { min-height: 44px; width: 100%; }
.demo-options { display: flex; gap: 8px; flex-wrap: wrap; }
.demo-option {
  position: relative;
  border: 2px solid var(--color-line);
  background: var(--color-surface-sunken);
  color: var(--color-ink);
  border-radius: 10px;
  padding: 8px 14px;
  font: 600 var(--step--1) / 1.2 var(--font-body);
  cursor: pointer;
}
.demo-option[aria-pressed="true"] { border-color: var(--color-accent); box-shadow: inset 0 0 0 1px var(--color-accent); }
.demo-option .best {
  position: absolute;
  top: -10px;
  left: 8px;
  background: var(--color-ring);
  color: var(--color-ring-ink);
  font-size: 0.6875rem;
  font-weight: 800;
  padding: 0 6px;
  border-radius: 6px;
}
.demo-actions { display: flex; justify-content: space-between; gap: 8px; margin-top: 14px; }
.text-button {
  background: none;
  border: 0;
  color: var(--color-accent);
  font: 700 var(--step--1) / 1 var(--font-body);
  cursor: pointer;
  padding: 10px 4px;
}
.text-button:disabled { color: var(--color-ink-muted); opacity: 0.6; cursor: default; }

.demo-strip { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-top: 12px; }
.demo-strip figure { margin: 0; }
.demo-strip svg { display: block; width: 100%; height: auto; border-radius: 4px; }
.demo-strip figcaption { font-size: 0.75rem; color: var(--color-ink-muted); margin-top: 2px; }
.demo-strip .is-favorite svg { outline: 3px solid var(--color-accent); outline-offset: 1px; }
.demo-caption { font-size: var(--step--1); color: var(--color-ink-muted); margin: 10px 4px 0; }

/* Eyes and mouths in the illustrations: the demo swaps them by class. */
.eyes-closed, .mouth-flat { display: none; }
.is-blinking .eyes-open { display: none; }
.is-blinking .eyes-closed { display: inline; }
.is-not-smiling .mouth-smile { display: none; }
.is-not-smiling .mouth-flat { display: inline; }

/* ---- Sections ---------------------------------------------------------------------------- */

.section { padding: 64px 0; }
.section.is-surface { background: var(--color-surface); }
.section-intro { max-width: var(--text-width); margin-bottom: 32px; }
.section-intro p { color: var(--color-ink-muted); font-size: var(--step-1); }

.steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 28px; counter-reset: step; }
@media (min-width: 760px) { .steps { grid-template-columns: repeat(3, 1fr); } }
.steps li { counter-increment: step; }
.steps li::before {
  content: counter(step);
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-ring);
  color: var(--color-ring-ink);
  font: 800 var(--step-1) / 1 var(--font-display);
  margin-bottom: 14px;
}
.steps p { color: var(--color-ink-muted); margin: 0; }

.who-for { display: grid; gap: 20px; }
@media (min-width: 760px) { .who-for { grid-template-columns: repeat(3, 1fr); } }
.who-for figure { margin: 0; }
.who-for svg { width: 100%; height: auto; border-radius: var(--radius-photo); display: block; }
.who-for figcaption { margin-top: 10px; }
.who-for figcaption strong { display: block; font-family: var(--font-display); font-size: var(--step-1); }
.who-for figcaption span { color: var(--color-ink-muted); }

.split { display: grid; gap: 32px; align-items: start; }
@media (min-width: 860px) { .split { grid-template-columns: 1fr 1fr; gap: 64px; } }

.fact-list { list-style: none; margin: 0; padding: 0; }
.fact-list li { padding: 14px 0 14px 40px; border-top: 1px solid var(--color-line); position: relative; }
.fact-list li:last-child { border-bottom: 1px solid var(--color-line); }
.fact-list li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 18px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--color-fixed-bright) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M9 16.2 4.8 12l-1.4 1.4L9 19 21 7l-1.4-1.4z' fill='%23111'/%3E%3C/svg%3E") center / 14px no-repeat;
}
.fact-list strong { display: block; }

.cta-band { padding: 64px 0 80px; }
.cta-band .wrap { display: grid; gap: 16px; justify-items: start; }

/* ---- Long-form pages --------------------------------------------------------------------- */

.page-header { padding: 32px 0 8px; }
.page-header p { color: var(--color-ink-muted); font-size: var(--step-1); max-width: var(--text-width); }
.prose { max-width: var(--text-width); padding-bottom: 72px; }
.prose h2 { font-size: var(--step-2); margin-top: 2em; }
.prose h3 { margin-top: 1.6em; }
.prose ul, .prose ol { padding-left: 1.3em; }
.prose li { margin-bottom: 0.4em; }
.prose table { width: 100%; border-collapse: collapse; font-size: var(--step--1); margin: 0 0 1.5em; display: block; overflow-x: auto; }
/* German has long compound words ("Auftragsverarbeitungsvertrag"); let them break at phone width. */
:lang(de) .prose { hyphens: auto; }
:lang(de) h1, :lang(de) h2, :lang(de) .prose { overflow-wrap: break-word; }
.prose th, .prose td { text-align: left; vertical-align: top; padding: 10px 12px 10px 0; border-bottom: 1px solid var(--color-line); }
.prose th { font-weight: 700; }
.last-updated { color: var(--color-ink-muted); font-size: var(--step--1); }

.callout {
  background: var(--color-surface);
  border-left: 5px solid var(--color-ring);
  border-radius: 0 12px 12px 0;
  padding: 16px 20px;
  margin: 0 0 1.5em;
}
.callout p:last-child { margin-bottom: 0; }

.tutorial-step { display: grid; gap: 20px; padding: 28px 0; border-top: 1px solid var(--color-line); }
@media (min-width: 760px) { .tutorial-step { grid-template-columns: 220px 1fr; gap: 40px; } }
.tutorial-step .step-number {
  font: 800 var(--step-3) / 1 var(--font-display);
  color: var(--color-ink);
}
.tutorial-step .step-number span {
  display: inline-grid;
  place-items: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-ring);
  color: var(--color-ring-ink);
}
.tutorial-step h2 { margin-top: 0; }

.faq details { border-top: 1px solid var(--color-line); padding: 4px 0; }
.faq details:last-of-type { border-bottom: 1px solid var(--color-line); }
.faq summary {
  cursor: pointer;
  font: 700 var(--step-1) / 1.3 var(--font-display);
  padding: 14px 32px 14px 0;
  list-style: none;
  position: relative;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  position: absolute;
  right: 4px;
  top: 10px;
  font-size: 1.6rem;
  color: var(--color-ink-muted);
}
.faq details[open] summary::after { content: "–"; }
.faq details > div { padding: 0 0 12px; }

/* Placeholders the owner must fill in before publishing. Deliberately loud. */
.todo {
  background: var(--color-todo);
  color: var(--color-todo-ink);
  padding: 0 4px;
  border-radius: 4px;
  font-weight: 600;
}

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

.site-footer { background: var(--color-surface-sunken); padding: 40px 0 48px; font-size: var(--step--1); color: var(--color-ink-muted); }
.site-footer .wrap { display: grid; gap: 24px; }
@media (min-width: 760px) { .site-footer .wrap { grid-template-columns: 1.4fr 1fr 1fr; } }
.site-footer h2 { font-size: var(--step-0); color: var(--color-ink); margin-bottom: 8px; }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin-bottom: 6px; }
.site-footer a { color: var(--color-ink-muted); }
.site-footer a:hover { color: var(--color-ink); }

/* Flags are emoji; the text label stays so platforms that draw them as letters (Windows) still read well. */
.language-switch .flag { font-family: "Apple Color Emoji", "Segoe UI Emoji", "Noto Color Emoji", sans-serif; font-size: 1.15em; line-height: 1; margin-right: 2px; }