/**
 * FdGamesCore — shared design tokens for Fd* games.
 * Aligned with FdPhotoPuzzle palette; games may alias --fdpz-* → --fdgm-*.
 */
:root {
  --fdgm-ink: #1a1917;
  --fdgm-muted: #6a655c;
  --fdgm-paper: #f6f3ee;
  --fdgm-line: rgba(26, 25, 23, 0.1);
  --fdgm-accent: #7a6548;
  --fdgm-accent-soft: rgba(122, 101, 72, 0.12);
  --fdgm-shadow: 0 12px 40px rgba(26, 25, 23, 0.1);
  --fdgm-ease-curve: cubic-bezier(0.25, 0.1, 0.25, 1);
  --fdgm-ease: 0.35s var(--fdgm-ease-curve);
  --fdgm-font-sans: "DM Sans", "Segoe UI", sans-serif;
  --fdgm-font-serif: "Cormorant Garamond", Georgia, serif;
  --fdgm-radius: 6px;
  --fdgm-focus: 0 0 0 3px rgba(122, 101, 72, 0.35);
}

@media (prefers-color-scheme: dark) {
  :root {
    --fdgm-ink: #f2efe8;
    --fdgm-muted: #a39e94;
    --fdgm-paper: #1c1b19;
    --fdgm-line: rgba(242, 239, 232, 0.12);
    --fdgm-accent: #c4a574;
    --fdgm-accent-soft: rgba(196, 165, 116, 0.16);
    --fdgm-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
  }
}

@media (prefers-reduced-motion: reduce) {
  :root {
    --fdgm-ease: 0.01ms linear;
  }
}

.fdgm-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  min-height: 44px;
  padding: 0.55rem 1.1rem;
  border-radius: var(--fdgm-radius);
  border: 1px solid var(--fdgm-accent);
  background: var(--fdgm-accent);
  color: #fff;
  font-family: var(--fdgm-font-sans);
  font-size: 0.9375rem;
  text-decoration: none;
  cursor: pointer;
  transition: background var(--fdgm-ease), color var(--fdgm-ease), box-shadow var(--fdgm-ease);
}

.fdgm-btn:focus-visible {
  outline: none;
  box-shadow: var(--fdgm-focus);
}

.fdgm-btn--ghost {
  background: transparent;
  color: var(--fdgm-ink);
}

.fdgm-card {
  background: var(--fdgm-paper);
  border: 1px solid var(--fdgm-line);
  border-radius: var(--fdgm-radius);
  box-shadow: var(--fdgm-shadow);
  padding: 1.25rem;
}

.fdgm-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;
}