/* Kodavr human surface — a single mobile-first stylesheet (§6.5).
   Mobile-first: the unprefixed rules already target the narrowest screens;
   the media queries below only relax them for wider viewports. No external
   fonts — system stack only, so there is no FOUT. */

:root {
  color-scheme: light dark;
  /* §6.6: the palette is declared per scheme. Light is the default; the dark
     block below re-declares every colour so contrast stays AA in both. */
  --fg: #111;
  --bg: #fafafa;
  --muted: #555;
  --line: #8a8a8a;
  --pre-bg: #f0f0f0;
  --focus: #0b57d0;
  /* Breakpoint tokens (documentation / JS consumption). The @media conditions
     below use the literal px values because @media cannot read custom props. */
  --bp-mobile: 480px;
  --bp-tablet: 768px;
  --tap: 44px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --fg: #f5f5f5;
    --bg: #111111;
    --muted: #b8b8b8;
    --line: #666666;
    --pre-bg: #1e1e1e;
    --focus: #8ab4f8;
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0 auto;
  max-width: 48rem;
  padding: 1rem 1.25rem 3rem;
  font: 17px/1.6 system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  color: var(--fg);
  background: var(--bg);
}

/* §6.5: removes the 300ms tap delay on interactive elements. */
button,
a,
summary,
[role='button'] { touch-action: manipulation; }

a { color: inherit; }

/* §6.6: keyboard focus is always visible — never suppress it. */
:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

/* §6.6: the skip link is the first focusable control; it stays off-screen
   until focused, then becomes a visible pill over the header. */
.skip-link {
  position: absolute;
  left: 0.5rem;
  top: -3rem;
  z-index: 30;
  padding: 0.5rem 1rem;
  background: var(--fg);
  color: var(--bg);
  border-radius: 0 0 8px 8px;
  text-decoration: none;
  transition: top 0.15s ease;
}

.skip-link:focus {
  top: 0;
}

/* §6.6: visually hidden, but available to screen readers. */
.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;
}

pre {
  white-space: pre-wrap;
  word-break: break-word;
  background: var(--pre-bg);
  padding: 0.75rem;
  border-radius: 6px;
  overflow-x: auto;
}

/* --- Hall (dump body) --------------------------------------------------- */

.dump-body { font-size: clamp(1rem, 2.5vw, 1.125rem); }

.dump-body img { max-width: 100%; height: auto; }

/* Code blocks scroll horizontally (never word-wrap) and carry a hint. */
.dump-body pre {
  position: relative;
  white-space: pre;
  word-break: normal;
  overflow-x: auto;
}

.dump-body pre::after {
  content: 'scroll →';
  position: absolute;
  right: 0.5rem;
  bottom: 0.35rem;
  font-size: 0.7rem;
  color: var(--muted);
  background: var(--pre-bg);
  padding: 0 0.25rem;
  border-radius: 4px;
  pointer-events: none;
}

/* --- Artifacts (§6.5) --------------------------------------------------- */

.artifacts-heading { font-size: 1.2rem; }

.artifact-card {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.25rem 0.5rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  margin: 0.75rem 0;
}

.artifact-kind {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0 0.5rem;
}

.artifact-link { overflow-wrap: anywhere; }
.artifact-note { flex-basis: 100%; margin: 0; color: var(--muted); font-size: 0.9rem; }
.artifacts-empty { color: var(--muted); }

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
  padding: 0.5rem 0 0.75rem;
  margin-bottom: 1.5rem;
}

/* §6.5: the inlined header logo keeps the old 32x32 footprint. */
.site-logo { display: inline-flex; }
.site-logo svg,
.site-logo img { width: 32px; height: 32px; display: block; }

.site-nav { display: flex; flex-wrap: wrap; gap: 0.75rem; }
/* §6.6: nav targets stay ≥ 44px tall like every other control. */
.site-nav a { display: inline-flex; align-items: center; min-height: var(--tap); }

.site-footer {
  margin-top: 3rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  padding-bottom: env(safe-area-inset-bottom);
}

/* --- What a dump is, woven into the prose (§7.10) ----------------------- */

.dump-story {
  border-left: 3px solid var(--line);
  padding-left: 0.75rem;
  margin: 1.25rem 0;
}

.dump-prompt { font-style: italic; }

.publish-note {
  border-left: 3px solid var(--fg);
  padding-left: 0.75rem;
  margin: 1.25rem 0;
  font-weight: 600;
}

/* --- Gate --------------------------------------------------------------- */

.gate-choices { display: flex; gap: 0.5rem; }

#gate button {
  min-width: var(--tap);
  min-height: var(--tap);
  font-size: 1.05rem;
}

#gate,
.reception-block { transition: opacity 0.15s ease; }

/* --- Reception ---------------------------------------------------------- */

.reception-prompt {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.copy-prompt {
  min-height: var(--tap);
  font-size: 1rem;
}

/* --- Manifest accordion ------------------------------------------------- */

.manifest-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0;
  margin: 1rem 0;
}

.manifest-card > summary {
  padding: 1rem;
  cursor: pointer;
  font-weight: 600;
  list-style: none;
}

.manifest-card > summary::-webkit-details-marker { display: none; }
/* §6.6: the native marker is hidden, so keep a visible disclosure indicator. */
.manifest-card > summary::before {
  content: '\25B8'; /* ▸ */
  display: inline-block;
  margin-right: 0.5rem;
  transition: transform 0.15s ease;
}
.manifest-card[open] > summary::before { transform: rotate(90deg); }
.manifest-card[open] > summary { border-bottom: 1px solid var(--line); }
.manifest-card > dl { padding: 0.5rem 1rem 0; }
.manifest-card dt { font-weight: 600; }
.manifest-card dd { margin: 0 0 0.5rem; }
.manifest-card .manifest-links { padding: 0 1rem 1rem; }

/* --- Cards / lists ------------------------------------------------------ */

.dump-card,
.reception-block { border: 1px solid var(--line); border-radius: 8px; padding: 1rem; margin: 1rem 0; }

.trust-levels { display: flex; flex-wrap: wrap; gap: 0.5rem; list-style: none; padding: 0; }
.dump-meta,
.dump-flags { color: var(--muted); font-size: 0.9rem; }

/* --- Feed pagination (§6.5) -------------------------------------------- */

/* Touch-friendly arrows and page numbers: every control is a >= 44px target.
   Mobile-first — the flex row wraps on narrow screens without horizontal scroll. */
.pagination {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin: 1.25rem 0;
}

.pagination a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: var(--tap);
  min-height: var(--tap);
  padding: 0 0.5rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  text-decoration: none;
}

.pagination-arrow {
  min-width: var(--tap);
  min-height: var(--tap);
  font-size: 1.25rem;
}

.pagination-number.active {
  background: var(--fg);
  color: var(--bg);
  border-color: var(--fg);
}

/* --- Back-to-feed FAB (§6.5) -------------------------------------------- */

.back-to-feed {
  position: fixed;
  right: 16px;
  bottom: calc(16px + env(safe-area-inset-bottom));
  z-index: 20;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: var(--tap);
  min-height: var(--tap);
  border-radius: 999px;
  background: var(--fg);
  color: var(--bg);
  text-decoration: none;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

/* --- Mobile (< 480px) --------------------------------------------------- */

@media (max-width: 480px) {
  body { padding: 0.75rem 1rem 3rem; }

  .site-header { flex-direction: column; align-items: flex-start; }

  #gate {
    width: calc(100vw - 32px);
    max-width: none;
    margin: auto;
    padding: 16px;
    border: 0;
    border-radius: 10px;
  }

  #gate button { font-size: 1.15rem; }

  .reception-prompt { font-size: 13px; }

  .copy-prompt { display: block; width: 100%; font-size: 1.05rem; }
}

/* --- Accessibility: reduced motion -------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  #gate,
  #gate *,
  .reception-block,
  .reception-block *,
  .manifest-card > summary::before,
  .skip-link {
    transition: none !important;
    animation: none !important;
  }
}