/**
 * Fokus, Skip-Link, Screen-Reader-Hilfen, erhöhter Kontrast.
 * :focus-visible für Tastatur, kein dicker Ring bei Maus (:focus:not(:focus-visible)).
 */

.skip-link {
  position: absolute;
  left: 12px;
  top: 8px;
  z-index: 1000;
  padding: 10px 14px;
  background: var(--ink);
  color: var(--bg);
  border-radius: 10px;
  transform: translateY(-200%);
  font-weight: 700;
  text-decoration: underline;
}

.skip-link:focus {
  transform: none;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Tastatur: 2px Outline in Primärfarbe plus äußerer Glow */
:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--focus) 40%, transparent);
}

:focus:not(:focus-visible) {
  outline: none;
  box-shadow: none;
}

input:focus-visible,
select:focus-visible,
textarea:focus-visible,
button:focus-visible,
a:focus-visible,
.choice-btn:focus-visible,
.quiz-card:focus-visible,
.icon-btn:focus-visible {
  border-color: var(--focus);
  outline: 2px solid var(--focus);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--focus) 40%, transparent);
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
  }
}

@media (prefers-contrast: more) {
  :root,
  [data-theme="light"] {
    --ink: #12141a;
    --muted: #1a1d23;
    --line: #1a1d23;
    --bg: #ffffff;
    --bg-elev: #ffffff;
  }

  [data-theme="dark"] {
    --ink: #f4f6f8;
    --muted: #e8eaed;
    --line: #e8eaed;
    --bg: #12141a;
    --bg-elev: #1c2128;
  }

  .btn.ghost,
  input,
  select,
  textarea,
  .panel,
  .choice-btn,
  .quiz-card {
    border-width: 2px;
  }
}