/* ==========================================================================
   base.css — Reset, Grundtypografie, wiederverwendbare Primitive
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
  /* Verhindert, dass Ankerziele unter der fixierten Kopfzeile landen. */
  scroll-padding-top: 96px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--c-bg);
  color: var(--c-text);
  font-family: var(--font-text);
  font-size: var(--fs-body);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: clip;
}

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

h1, h2, h3, h4, p, figure, blockquote { margin: 0; }

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease-soft),
              opacity var(--dur-fast) var(--ease-soft),
              border-color var(--dur-fast) var(--ease-soft);
}

::selection { background: var(--accent); color: #FFF; }

/* Sichtbarer Fokus nur für Tastaturnutzung – Mausklicks bleiben ruhig. */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

/* --------------------------------------------------------------------------
   Sprungmarke für Tastatur- und Screenreader-Nutzung
   -------------------------------------------------------------------------- */
.skip-link {
  position: absolute;
  top: 0; left: 50%;
  z-index: 200;
  transform: translate(-50%, -120%);
  background: var(--c-bg-ink);
  color: var(--c-on-ink);
  font: 600 var(--fs-xs)/1 var(--font-text);
  padding: 14px 22px;
  border-radius: 0 0 var(--r-sm) var(--r-sm);
  transition: transform var(--dur-fast) var(--ease-out);
}
.skip-link:focus-visible { transform: translate(-50%, 0); }

/* --------------------------------------------------------------------------
   Typografische Primitive
   -------------------------------------------------------------------------- */
.display,
.h2, .h3, .h4 {
  font-family: var(--font-display);
  font-weight: 800;
  color: var(--c-bg-ink);
  text-wrap: balance;
}
.display { font-size: var(--fs-display); line-height: 1.02; letter-spacing: var(--tr-display); }
.h2      { font-size: var(--fs-h2);      line-height: 1.08; letter-spacing: var(--tr-h2); }
.h3      { font-size: var(--fs-h3);      line-height: 1.12; letter-spacing: var(--tr-h3); }
.h4      { font-size: var(--fs-h4);      line-height: 1.3;  letter-spacing: var(--tr-h4); font-weight: 700; }

.lead {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--fs-lead);
  line-height: 1.4;
  letter-spacing: -0.01em;
  color: var(--c-text-2);
  text-wrap: pretty;
}

.body   { color: var(--c-body); text-wrap: pretty; }
.body-sm{ color: var(--c-body); font-size: var(--fs-sm); line-height: 1.7; text-wrap: pretty; }

/* Setzt einzelne Wörter, Ziffern oder Satzzeichen in die Akzentfarbe. */
.is-accent { color: var(--accent); }
.on-ink .is-accent { color: var(--accent-lift); }

/* Kleine Grossbuchstaben-Marke über jeder Abschnittsüberschrift.
   Der Strich davor gibt dem Label Gewicht, ohne ein Icon zu brauchen. */
.eyebrow {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: var(--fs-eyebrow);
  font-weight: 600;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--accent);
}
.eyebrow::before {
  content: "";
  width: 36px;
  height: 1.5px;
  flex: none;
  background: currentColor;
}
.eyebrow--bare::before { display: none; }

/* Ordnungszahl, die Abschnitte und Karten still durchnummeriert. */
.ordinal {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.9375rem;
  color: #C9C7C0;
  font-variant-numeric: tabular-nums;
}

/* --------------------------------------------------------------------------
   Umkehrung für dunkle Abschnitte
   -------------------------------------------------------------------------- */
.on-ink {
  background: var(--c-bg-ink);
  color: var(--c-on-ink);
}
.on-ink .display,
.on-ink .h2,
.on-ink .h3,
.on-ink .h4      { color: var(--c-on-ink); }
.on-ink .eyebrow { color: var(--accent-lift); }
.on-ink .lead    { color: var(--c-on-ink); }
.on-ink .body,
.on-ink .body-sm { color: var(--c-on-ink-2); }
.on-ink .ordinal { color: var(--c-on-ink-3); }

/* --------------------------------------------------------------------------
   Layout-Hüllen
   -------------------------------------------------------------------------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.shell--narrow { max-width: var(--shell-narrow); }

.section { padding-block: var(--section-y); position: relative; }
.section--lg { padding-block: var(--section-y-lg); }
.section--alt { background: var(--c-bg-alt); }