/* styles.css — Merkheft. Tokens aus DESIGN.md, Akzentfamilie amber. */

@font-face {
  font-family: 'Atkinson Hyperlegible';
  src: url('fonts/atkinson-hyperlegible-400.woff2?v=6') format('woff2');
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: 'Atkinson Hyperlegible';
  src: url('fonts/atkinson-hyperlegible-700.woff2?v=6') format('woff2');
  font-weight: 700;
  font-display: swap;
}

:root {
  --color-background-app: #0E141D;
  --color-background-surface: #162232;
  --color-background-surface-raised: #1B2A3C;
  --color-background-surface-soft: #13202E;
  --color-border-subtle: #263648;
  --color-border-strong: #3A4B5F;
  --color-border-focus: #F4E7B1;
  --color-text-primary: #F5F7FA;
  --color-text-secondary: #C5D0DD;
  --color-text-muted: #8FA1B4;
  --color-accent: #D8C47A;
  --color-accent-soft: #D8C47A26;
  --color-accent-muted: #A99858;
  --font-body: 'Atkinson Hyperlegible', system-ui, sans-serif;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  background: var(--color-background-app);
  color: var(--color-text-primary);
  font-family: var(--font-body);
  line-height: 1.55;
  padding: var(--space-6) var(--space-4) 4rem;
}

#app { max-width: 44rem; margin: 0 auto; display: grid; gap: var(--space-4); }

.app-header { display: grid; gap: var(--space-1); margin-bottom: var(--space-2); }
.app-title {
  font-size: 1.5rem; display: flex; align-items: center; gap: var(--space-2);
  color: var(--color-text-primary);
}
.title-icon { width: 1.5rem; height: 1.5rem; color: var(--color-accent); }
.tagline { color: var(--color-text-secondary); max-width: 65ch; }

.section-label {
  font-size: 0.95rem; color: var(--color-text-muted); font-weight: 700;
  margin-top: var(--space-2);
}

.blatt-list { list-style: none; display: grid; gap: var(--space-2); margin-top: var(--space-2); }
.blatt {
  display: grid; grid-template-columns: 1fr auto; align-items: center;
  gap: var(--space-1) var(--space-2);
  background: var(--color-background-surface);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-3) var(--space-4);
  color: inherit; text-decoration: none; min-height: 3rem;
}
.blatt:hover { background: var(--color-background-surface-raised); }
.blatt:focus-visible { outline: 2px solid var(--color-border-focus); outline-offset: 2px; }
.blatt-title { font-weight: 700; }
.blatt-meta { grid-column: 1; color: var(--color-text-muted); font-size: 0.85rem; }
.chevron { grid-column: 2; grid-row: 1 / span 2; width: 1.1rem; height: 1.1rem; color: var(--color-text-muted); }

.page-nav { margin-bottom: var(--space-1); }
.back {
  display: inline-flex; align-items: center; gap: var(--space-2);
  color: var(--color-text-secondary); text-decoration: none; min-height: 2.75rem;
  padding: var(--space-2) var(--space-2) var(--space-2) 0;
}
.back:hover { color: var(--color-text-primary); }
.back:focus-visible { outline: 2px solid var(--color-border-focus); outline-offset: 2px; }
.back .icon { width: 1.1rem; height: 1.1rem; }

.blatt-page {
  background: var(--color-background-surface);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-6) var(--space-4);
  display: grid; gap: var(--space-3);
}
.blatt-gruppe { color: var(--color-accent); font-size: 0.9rem; font-weight: 700; }
.blatt-page h1 { font-size: 1.4rem; }
.intro { color: var(--color-text-secondary); max-width: 65ch; }
.steps {
  color: var(--color-text-secondary); max-width: 60ch;
  padding-left: var(--space-6); display: grid; gap: var(--space-1);
}
.steps li::marker { color: var(--color-accent); font-weight: 700; }

.illu-stage {
  background: var(--color-background-surface-soft);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  display: grid; place-items: center; gap: var(--space-3);
  overflow-x: auto;
}
.illu { max-width: 100%; height: auto; }
.illu-square { width: min(260px, 76vw); }
svg text { font-family: var(--font-body); font-size: 0.85rem; fill: var(--color-text-muted); }

.illu-controls { display: flex; flex-wrap: wrap; gap: var(--space-2); align-items: center; justify-content: center; }
.illu-controls button {
  font: inherit; border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  background: #1C2A3B; color: var(--color-text-primary);
  padding: var(--space-2) var(--space-3); cursor: pointer; min-height: 2.75rem;
}
.illu-controls button:hover { background: #26384E; }
.illu-controls button[aria-pressed="true"] { border-color: var(--color-accent); color: var(--color-accent); }
.illu-controls button:focus-visible,
.illu-controls input:focus-visible { outline: 2px solid var(--color-border-focus); outline-offset: 2px; }
.illu-controls input[type="range"] { flex: 1 1 9rem; accent-color: #D8C47A; min-height: 2.75rem; }
.illu-controls label { color: var(--color-text-secondary); display: inline-flex; gap: var(--space-2); align-items: center; }
.illu-status { color: var(--color-text-muted); font-size: 0.9rem; text-align: center; }

/* Infografik-Klassen: Einheitentreppen, Regelkasten, Beispiele.
   Farben pro Klasse, damit der Druck sie hell überschreiben kann. */
.ig { width: min(460px, 100%); }
.ig-title { fill: var(--color-text-primary); font-size: 1rem; font-weight: 700; }
.ig-sub { fill: var(--color-text-muted); font-size: 0.72rem; }
.ig-h { fill: var(--color-accent); font-size: 0.85rem; font-weight: 700; }
.ig-box { fill: var(--color-background-surface-raised); stroke: var(--color-border-strong); stroke-width: 1.5; }
.ig-unit { fill: var(--color-text-primary); font-size: 0.85rem; font-weight: 700; }
.ig-word { fill: var(--color-text-muted); font-size: 0.6rem; }
.ig-factor { fill: var(--color-accent); font-size: 0.7rem; font-weight: 700; }
.ig-arrow { stroke: var(--color-text-secondary); stroke-width: 2; stroke-linecap: round; }
.ig-arrowhead { fill: var(--color-text-secondary); }
.ig-panel { fill: var(--color-background-surface-soft); stroke: var(--color-border-subtle); stroke-width: 1; }
.ig-ex { fill: var(--color-text-secondary); font-size: 0.78rem; }
.ig-tick { stroke: var(--color-border-strong); stroke-width: 1.5; }
.ig-hand-h { stroke: var(--color-accent); stroke-width: 4; stroke-linecap: round; }
.ig-hand-m { stroke: var(--color-text-primary); stroke-width: 2.5; stroke-linecap: round; }
.ig-dot { fill: var(--color-accent); }
.ig-coin { fill: var(--color-accent-soft); stroke: var(--color-accent-muted); stroke-width: 1.5; }

.orbits { position: relative; width: min(260px, 76vw); aspect-ratio: 1; }
.orbit { position: absolute; inset: 0; margin: auto; border: 1px dashed var(--color-border-strong); border-radius: 50%; }
.carrier { position: absolute; inset: 0; margin: auto; }
.planet {
  position: absolute; top: 50%; left: 0; width: 12px; height: 12px; margin: -6px 0 0 -6px;
  border-radius: 50%; background: var(--color-accent);
}
.sun { position: absolute; inset: 0; margin: auto; width: 22px; height: 22px; border-radius: 50%; background: var(--color-accent); }
.running .carrier { animation: orbit linear infinite; }
@keyframes orbit { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) {
  .running .carrier { animation: none; }
}

.fakten { display: grid; gap: var(--space-2); }
.fakten div {
  display: grid; gap: var(--space-1);
  background: var(--color-background-surface-soft);
  border-radius: var(--radius-md);
  padding: var(--space-2) var(--space-3);
}
.fakten dt { font-weight: 700; color: var(--color-accent); }
.fakten dd { color: var(--color-text-secondary); }

.ueben-list { list-style: none; display: grid; gap: var(--space-2); }
.ueben-link {
  display: inline-flex; align-items: center; gap: var(--space-2);
  color: var(--color-accent); text-decoration: none; font-weight: 700;
  background: var(--color-background-surface-soft);
  border: 1px solid var(--color-border-subtle);
  min-height: 2.75rem; padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-md);
}
.ueben-icon { width: 1.1rem; height: 1.1rem; flex: none; }
.ueben-text { text-decoration: underline; text-underline-offset: 3px; }
.ueben-link:hover { background: var(--color-background-surface-raised); border-color: var(--color-border-strong); }
.ueben-link:focus-visible { outline: 2px solid var(--color-border-focus); outline-offset: 2px; }
.ueben-meta { color: var(--color-text-muted); font-weight: 400; font-size: 0.9rem; }

.code-line { color: var(--color-text-muted); font-size: 0.85rem; }

.app-footer { color: var(--color-text-muted); font-size: 0.9rem; display: grid; gap: var(--space-2); }
.quiet-link { color: var(--color-text-secondary); }
.quiet-link:focus-visible { outline: 2px solid var(--color-border-focus); outline-offset: 2px; }

@media (min-width: 40rem) {
  .blatt-page { padding: var(--space-6); }
  .fakten { grid-template-columns: repeat(3, 1fr); }
  .fakten div { grid-template-rows: auto 1fr; }
}

/* Drucken: jedes Merkblatt ist ein A4-Blatt. Helle Fläche, dunkle
   Schrift, keine Navigation und keine Bedienelemente. */
@media print {
  body { background: #fff; color: #1A2230; padding: 0; }
  .page-nav, .illu-controls, .app-footer { display: none; }
  .blatt-page {
    background: #fff; border: none; padding: 0;
  }
  .blatt-gruppe { color: #8A7A3E; }
  .intro, .steps, .fakten dd { color: #33404F; }
  .section-label { color: #5C6B7C; }
  .fakten div { background: #F4F1E4; }
  .fakten dt { color: #8A7A3E; }
  .illu-stage { background: #F7F8FA; border-color: #D4DAE1; }
  svg text { fill: #5C6B7C; }
  .ueben-link { color: #8A7A3E; background: #F7F8FA; border-color: #D4DAE1; }
  .ueben-meta, .code-line, .illu-status { color: #5C6B7C; }
  .blatt-page, .illu-stage { break-inside: avoid; }
  .ig-title, .ig-unit { fill: #1A2230; }
  .ig-sub, .ig-word { fill: #5C6B7C; }
  .ig-h, .ig-factor { fill: #8A7A3E; }
  .ig-box { fill: #F7F4E6; stroke: #C9BD8F; }
  .ig-arrow { stroke: #33404F; }
  .ig-arrowhead { fill: #33404F; }
  .ig-panel { fill: #F7F8FA; stroke: #D4DAE1; }
  .ig-ex { fill: #33404F; }
  .ig-tick { stroke: #A9B4BF; }
  .ig-hand-h { stroke: #8A7A3E; }
  .ig-hand-m { stroke: #1A2230; }
  .ig-dot { fill: #8A7A3E; }
  .ig-coin { fill: #F7F4E6; stroke: #C9BD8F; }
  /* Seitenumbrüche: Abschnitte bleiben beisammen, Titel kleben am
     folgenden Inhalt, kompaktere Abstände für ein A4-Blatt. */
  .blatt-page { gap: var(--space-2); }
  .illu-stage { padding: var(--space-2); }
  .section-label { break-after: avoid; }
  .fakten, .fakten div, .ueben-list, .steps, .intro { break-inside: avoid; }
}