/* keyword-search.css - shared by the vanilla control and the React twin (same class names).
 *
 * Tokens follow Documents/Factory/UI_STANDARDS.md:
 *   §3 colour: OKLCH, semantic names, dark mode designed in parallel. Each --ks-* token first reads the
 *      page's own semantic token (--bg-surface, --text-primary, --accent-primary, --focus-ring ...) and
 *      only falls back to the values here, so the control takes on a project's palette for free.
 *   §4 spacing: 2 / 4 / 8 / 12 / 16 / 24 px only.
 *   §5 motion: durations and easing from projects/_shared/ui-effects/motion-tokens.css
 *      (--motion-fast 180ms, --motion-base 240ms, --ease-snappy); transform + opacity only;
 *      prefers-reduced-motion reduces everything to a fade.
 *   §6 states: default, hover, active, focus-visible, disabled, loading (progress bar), empty, error.
 * Touch: every control is at least 44px on touch screens and at 480px and below.
 * Tokens sit on :root (prefixed --ks-) because highlights, pills and empty states render outside .ks.
 */

:root {
  --ks-surface: var(--bg-surface, oklch(99.2% 0.002 250));
  --ks-subtle: var(--bg-subtle, oklch(96.5% 0.005 250));
  --ks-elevated: var(--bg-elevated, oklch(100% 0 0));
  --ks-text: var(--text-primary, oklch(23% 0.02 255));
  --ks-muted: var(--text-muted, oklch(45% 0.02 255));
  --ks-border: var(--border-subtle, oklch(88% 0.008 250));
  --ks-border-strong: var(--border-strong, oklch(64% 0.015 250));
  --ks-accent: var(--accent-primary, oklch(52% 0.18 258));
  --ks-accent-soft: var(--accent-primary-soft, oklch(94% 0.04 258));
  --ks-focus: var(--focus-ring, oklch(58% 0.2 258));
  --ks-error: var(--error, oklch(50% 0.2 27));
  --ks-mark-bg: oklch(91% 0.12 95);
  --ks-mark-text: oklch(23% 0.03 80);
  --ks-shadow: 0 8px 24px oklch(20% 0.02 255 / 0.14);
  --ks-radius: 12px;
  --ks-touch: 44px;
  --ks-compact: 32px;
  --ks-fast: var(--motion-fast, 180ms);
  --ks-base: var(--motion-base, 240ms);
  --ks-instant: var(--motion-instant, 120ms);
  --ks-ambient: var(--motion-ambient, 2000ms);
  --ks-ease: var(--ease-snappy, cubic-bezier(0.22, 1, 0.36, 1));
  /* transform amounts are tokens so reduced-motion can zero them and keep the fade */
  --ks-rise: 4px;
  --ks-pop: 0.85;
  --ks-press: 0.96;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ks-surface: var(--bg-surface, oklch(20% 0.012 255));
    --ks-subtle: var(--bg-subtle, oklch(24% 0.012 255));
    --ks-elevated: var(--bg-elevated, oklch(27% 0.014 255));
    --ks-text: var(--text-primary, oklch(94% 0.008 250));
    --ks-muted: var(--text-muted, oklch(74% 0.015 250));
    --ks-border: var(--border-subtle, oklch(32% 0.012 255));
    --ks-border-strong: var(--border-strong, oklch(52% 0.015 255));
    --ks-accent: var(--accent-primary, oklch(72% 0.14 258));
    --ks-accent-soft: var(--accent-primary-soft, oklch(32% 0.07 258));
    --ks-focus: var(--focus-ring, oklch(74% 0.15 258));
    --ks-error: var(--error, oklch(72% 0.17 27));
    --ks-mark-bg: oklch(48% 0.1 85);
    --ks-mark-text: oklch(98% 0.01 90);
    --ks-shadow: 0 8px 24px oklch(5% 0 0 / 0.5);
  }
}

:root[data-theme="dark"] {
  --ks-surface: var(--bg-surface, oklch(20% 0.012 255));
  --ks-subtle: var(--bg-subtle, oklch(24% 0.012 255));
  --ks-elevated: var(--bg-elevated, oklch(27% 0.014 255));
  --ks-text: var(--text-primary, oklch(94% 0.008 250));
  --ks-muted: var(--text-muted, oklch(74% 0.015 250));
  --ks-border: var(--border-subtle, oklch(32% 0.012 255));
  --ks-border-strong: var(--border-strong, oklch(52% 0.015 255));
  --ks-accent: var(--accent-primary, oklch(72% 0.14 258));
  --ks-accent-soft: var(--accent-primary-soft, oklch(32% 0.07 258));
  --ks-focus: var(--focus-ring, oklch(74% 0.15 258));
  --ks-error: var(--error, oklch(72% 0.17 27));
  --ks-mark-bg: oklch(48% 0.1 85);
  --ks-mark-text: oklch(98% 0.01 90);
  --ks-shadow: 0 8px 24px oklch(5% 0 0 / 0.5);
}

/* ---------- layout ---------- */
.ks {
  position: relative;
  display: grid;
  gap: 8px;
  min-width: 0;
  color: var(--ks-text);
  font: inherit;
}
/* A display rule must never beat [hidden] (Promise-Auditor v0.2 P0). The pieces used OUTSIDE .ks need
   it too: the demo's "Show more" (.ks-btn) stayed visible at 0 results until this line (2026-10-14). */
.ks [hidden],
.ks-btn[hidden],
.ks-pill[hidden],
.ks-pills[hidden],
.ks-empty[hidden] { display: none !important; }
.ks-row { display: flex; align-items: center; gap: 8px; min-width: 0; }
.ks-field { position: relative; flex: 1 1 auto; min-width: 0; }

.ks-sr {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap; border: 0;
}

/* ---------- the box ---------- */
.ks-input {
  box-sizing: border-box;
  width: 100%;
  min-height: var(--ks-touch);
  margin: 0;
  padding: 0 calc(var(--ks-touch) + 4px) 0 40px;
  font: inherit;
  font-size: 1rem; /* 16px: below this iOS Safari zooms the page on focus */
  line-height: 1.5;
  color: var(--ks-text);
  background: var(--ks-surface);
  border: 1px solid var(--ks-border-strong);
  border-radius: var(--ks-radius);
  appearance: none;
  -webkit-appearance: none;
}
.ks-input::placeholder { color: var(--ks-muted); opacity: 1; }
.ks-input::-webkit-search-cancel-button,
.ks-input::-webkit-search-decoration { -webkit-appearance: none; appearance: none; }
.ks-input:hover { border-color: var(--ks-muted); }
/* a text box shows its ring on any focus, mouse included: it is where the typing goes */
.ks-input:focus {
  outline: 2px solid var(--ks-focus);
  outline-offset: 2px;
  border-color: var(--ks-accent);
}
.ks-input:disabled { opacity: 0.55; cursor: not-allowed; }
.ks[aria-busy="true"] .ks-input { border-color: var(--ks-accent); }

.ks-icon {
  position: absolute; left: 12px; top: 50%;
  width: 20px; height: 20px;
  transform: translateY(-50%);
  fill: none; stroke: var(--ks-muted); stroke-width: 1.75; stroke-linecap: round;
  pointer-events: none;
}

.ks-kbd {
  position: absolute; right: 12px; top: 50%;
  transform: translateY(-50%);
  min-width: 20px; padding: 0 4px;
  font: 600 0.75rem/1.5 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  text-align: center;
  color: var(--ks-muted);
  border: 1px solid var(--ks-border-strong);
  border-radius: 4px;
  pointer-events: none;
  transition: opacity var(--ks-fast) var(--ks-ease);
}
.ks-input:focus ~ .ks-kbd,
.ks-input:not(:placeholder-shown) ~ .ks-kbd { opacity: 0; }
@media (hover: none) { .ks-kbd { display: none; } }

/* ---------- buttons ---------- */
.ks-clear {
  display: inline-grid; place-items: center;
  width: var(--ks-touch); height: var(--ks-touch);
  margin: 0; padding: 0;
  color: var(--ks-muted);
  background: transparent;
  border: 0;
  border-radius: var(--ks-radius);
  cursor: pointer;
  transition: transform var(--ks-instant) var(--ks-ease), opacity var(--ks-fast) var(--ks-ease),
    visibility 0s linear var(--ks-fast);
}
.ks-clear { position: absolute; right: 0; top: 0; }
.ks-clear svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; }
.ks-clear[data-on="false"] { opacity: 0; visibility: hidden; transform: scale(var(--ks-pop)); pointer-events: none; }
.ks-clear[data-on="true"] { opacity: 1; visibility: visible; transform: scale(1); transition-delay: 0s; }
.ks-clear:hover { color: var(--ks-text); }

/* The "i" (.ks-info) is an info-tip button: load info-tip.css (.claude/skills/info-tip). It keeps its 44px circle
 * beside the 44px box through info-tip's custom properties, which inherit, so stylesheet order never matters. */
.ks {
  --it-size: var(--ks-touch);
  --it-btn-font: 1rem;
  --it-btn-text: var(--ks-muted);
  --it-btn-border: var(--ks-border-strong);
}

.ks-clear:active,
.ks-btn:active,
.ks-pill:active { transform: scale(var(--ks-press)); }

.ks-clear:focus-visible,
.ks-btn:focus-visible,
.ks-pill:focus-visible {
  outline: 2px solid var(--ks-focus);
  outline-offset: 2px;
}

.ks-btn {
  display: inline-flex; align-items: center; gap: 8px;
  min-height: var(--ks-compact);
  padding: 4px 12px;
  font: inherit; font-size: 0.875rem;
  color: var(--ks-text);
  background: var(--ks-surface);
  border: 1px solid var(--ks-border-strong);
  border-radius: 999px;
  cursor: pointer;
  transition: transform var(--ks-instant) var(--ks-ease);
}
.ks-btn:hover { border-color: var(--ks-accent); color: var(--ks-accent); }
.ks-btn:disabled { opacity: 0.55; cursor: not-allowed; }
.ks-btn--primary { color: var(--ks-accent); border-color: var(--ks-accent); background: var(--ks-accent-soft); }

/* ---------- searching bar (async only) ---------- */
.ks-progress { position: relative; height: 2px; margin-top: -6px; overflow: hidden; border-radius: 2px; }
.ks-progress span {
  position: absolute; inset: 0 auto 0 0; width: 40%;
  background: var(--ks-accent);
  transform: translateX(-100%);
  opacity: 0;
  transition: opacity var(--ks-fast) var(--ks-ease);
}
/* linear is right for a progress sweep (ui-transitions law 2) */
.ks-progress[data-on="true"] span { opacity: 1; animation: ks-sweep var(--ks-ambient) linear infinite; }
@keyframes ks-sweep { from { transform: translateX(-100%); } to { transform: translateX(250%); } }

/* ---------- count + status ---------- */
.ks-meta { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 12px; min-height: 20px; }
.ks-count,
.ks-status { margin: 0; font-size: 0.875rem; line-height: 1.55; color: var(--ks-muted); }
.ks-count { font-variant-numeric: tabular-nums; }
.ks-status--error { color: var(--ks-error); }

/* ---------- used outside .ks: highlights, pills, empty state ---------- */
mark.ks-hit {
  padding: 0 2px; margin: 0 -2px;
  color: var(--ks-mark-text);
  background: var(--ks-mark-bg);
  border-radius: 2px;
}

.ks-pills { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 8px; }
.ks-pill {
  display: inline-flex; align-items: center; gap: 8px;
  min-height: var(--ks-compact);
  padding: 4px 12px;
  font: inherit; font-size: 0.875rem;
  color: var(--ks-text);
  background: var(--ks-accent-soft);
  border: 1px solid var(--ks-accent);
  border-radius: 999px;
  cursor: pointer;
  transition: transform var(--ks-instant) var(--ks-ease);
}
.ks-pill-k { font-size: 0.75rem; letter-spacing: 0.02em; text-transform: uppercase; color: var(--ks-muted); }
.ks-pill-x { font-size: 1rem; line-height: 1; color: var(--ks-muted); }
.ks-pill:hover .ks-pill-x { color: var(--ks-text); }

.ks-empty {
  padding: 16px;
  color: var(--ks-text);
  background: var(--ks-subtle);
  border: 1px dashed var(--ks-border-strong);
  border-radius: var(--ks-radius);
}
.ks-empty-title { margin: 0 0 8px; font-weight: 600; }
.ks-empty-terms { margin: 0 0 12px; padding-left: 20px; color: var(--ks-muted); font-size: 0.875rem; }
.ks-empty-actions { display: flex; flex-wrap: wrap; gap: 8px; }

/* ---------- touch and narrow screens: 44px targets ---------- */
@media (pointer: coarse), (max-width: 480px) {
  .ks-btn,
  .ks-pill { min-height: var(--ks-touch); padding: 8px 16px; }
}

/* ---------- reduced motion: fade only (UI_STANDARDS §5) ---------- */
@media (prefers-reduced-motion: reduce) {
  :root { --ks-rise: 0px; --ks-pop: 1; --ks-press: 1; }
  .ks-progress[data-on="true"] span { animation: none; transform: none; width: 100%; opacity: 0.5; }
}