/* agent-ready.css: the prompt block and the page menu (ADR-0019).
 Same bytes on every stack front page; copy it, don't fork it. Squire owns it (kit/site/assets/).

 The kit brings the layout and none of the look. Every colour, font and corner comes from a --ar-*
 token, and each site maps those onto its own palette in its own sheet, the way proof.css maps
 --pf-*. Unmapped, a token falls back to WayneUI's, so a site that maps nothing still looks like
 WayneUI rather than like a docs platform.

   --ar-bg        the card                 --ar-code-bg   the prompt's panel
   --ar-ink       text on the card         --ar-code-ink  the prompt's text
   --ar-muted     secondary text           --ar-term-bg   the command panel
   --ar-rule      hairlines                --ar-term-ink  the command's text
   --ar-accent    the primary button       --ar-on-accent its label
   --ar-focus     the focus ring           --ar-radius    corners
   --ar-display   the title's face         --ar-body      running text
   --ar-mono      prompts and commands     --ar-shadow    the card's lift

 Link it before the site's own sheet: the kit's class rules still beat the site's bare element rules
 (code, button, a), and a site rule of the same weight wins by coming later. Motion only when the
 reader is happy with it. */

.ar-prompt {
  --_bg: var(--ar-bg, var(--wsu-surface-raised, #fff));
  --_ink: var(--ar-ink, var(--wsu-text, #1b1b1b));
  --_muted: var(--ar-muted, var(--wsu-text-muted, #4a4a4a));
  --_rule: var(--ar-rule, var(--wsu-border, #d4d4d4));
  --_accent: var(--ar-accent, var(--wsu-brand, #0c5449));
  --_on-accent: var(--ar-on-accent, var(--wsu-on-brand, #fff));
  --_code-bg: var(--ar-code-bg, var(--wsu-surface-sunken, #f6f6f4));
  --_code-ink: var(--ar-code-ink, var(--_ink));
  --_term-bg: var(--ar-term-bg, var(--wsu-ink-950, #16201d));
  --_term-ink: var(--ar-term-ink, #f4f1ea);
  --_focus: var(--ar-focus, var(--_accent));
  --_radius: var(--ar-radius, var(--wsu-radius-box, .75rem));
  --_mono: var(--ar-mono, var(--wsu-font-family-mono, ui-monospace, monospace));

  position: relative;
  margin: 0;
  padding: clamp(1.1rem, 2.5vw, 1.6rem);
  background: var(--_bg);
  color: var(--_ink);
  border: 1px solid var(--_rule);
  border-radius: var(--_radius);
  box-shadow: var(--ar-shadow, none);
  font-family: var(--ar-body, inherit);
  min-width: 0;
}

.ar-prompt :focus-visible,
.ar-page :focus-visible {
  outline: 3px solid var(--_focus, var(--ar-focus, currentColor));
  outline-offset: 2px;
}

/* ------------------------------------------------------------ head */
.ar-prompt__head { display: flex; gap: .9rem; align-items: flex-start; margin: 0 0 1rem; }
.ar-prompt__glyph {
  flex: none; display: inline-grid; place-items: center;
  width: 2.4rem; height: 2.4rem;
  border: 1px solid var(--_rule); border-radius: calc(var(--_radius) * .6);
  font-family: var(--_mono); font-weight: 600; font-size: .9rem; letter-spacing: -.04em;
  color: var(--_accent); background: var(--_code-bg);
}
.ar-prompt__kicker {
  margin: 0 0 .2rem;
  font-family: var(--_mono); font-size: .72rem; letter-spacing: .12em; text-transform: uppercase;
  color: var(--_muted);
}
.ar-prompt__title {
  margin: 0;
  font-family: var(--ar-display, inherit); font-size: 1.3rem; line-height: 1.2; font-weight: 700;
  color: var(--_ink); text-wrap: balance;
}
.ar-prompt__desc { margin: .3rem 0 0; color: var(--_muted); font-size: .98rem; line-height: 1.5; max-width: 60ch; }

/* ------------------------------------------------------------ the prompt */
.ar-prompt__text {
  position: relative;
  margin: 0;
  padding: 1rem 1.1rem;
  background: var(--_code-bg);
  color: var(--_code-ink);
  border: 1px solid var(--_rule);
  border-radius: calc(var(--_radius) * .6);
  font-family: var(--_mono); font-size: .84rem; line-height: 1.6;
  white-space: pre-wrap; overflow-wrap: anywhere; tab-size: 2;
}
.ar-prompt__text code { font: inherit; color: inherit; background: none; padding: 0; border-radius: 0; white-space: inherit; }

/* The preview: the first lines, a fade, and a button for the rest. Only the text fades: the mask sits
   on the code inside the panel, so the panel's own background, pattern, border and corners stay whole
   on every site, whatever each one paints there. A mask on the panel would fade its edge too. */
.ar-prompt.is-collapsed .ar-prompt__text { overflow: hidden; }
.ar-prompt.is-collapsed .ar-prompt__text code,
.ar-cmd.is-collapsed .ar-cmd__code code {
  display: block; overflow: hidden;
  max-height: calc(var(--ar-preview-lines, 10) * 1.6em);
  max-height: calc(var(--ar-preview-lines, 10) * 1lh);
  -webkit-mask-image: linear-gradient(to bottom, #000 calc(100% - 5.5em), transparent calc(100% - .5em));
  mask-image: linear-gradient(to bottom, #000 calc(100% - 5.5em), transparent calc(100% - .5em));
}
.ar-prompt__more {
  display: inline-flex; align-items: center; gap: .55rem;
  min-height: 2.75rem; margin: .15rem 0 -.5rem; padding: 0;
  background: none; border: 0; cursor: pointer;
  font: inherit; font-family: var(--_mono); font-size: .8rem; letter-spacing: .02em;
  color: var(--_accent); text-decoration: underline; text-underline-offset: .2em; text-decoration-thickness: 1px;
}
/* A chevron drawn with two borders: down while folded, up once open. */
.ar-prompt__more::after {
  content: ""; flex: none; width: .42em; height: .42em;
  border: solid currentColor; border-width: 0 1.5px 1.5px 0;
  transform: translateY(-.15em) rotate(45deg);
}
.ar-prompt__more[aria-expanded="true"]::after { transform: translateY(.1em) rotate(-135deg); }
.ar-prompt__more[hidden] { display: none; }
.ar-prompt__more:hover { text-decoration-thickness: 2px; }

/* ------------------------------------------------------------ actions */
.ar-prompt__actions {
  display: flex; flex-wrap: wrap; align-items: center; gap: .75rem 1.25rem;
  margin-top: 1rem;
}
.ar-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .4rem;
  min-height: 2.75rem; padding: .5rem 1.05rem;
  font: inherit; font-weight: 700; font-size: .95rem; line-height: 1.1;
  color: var(--_ink); background: transparent;
  border: 1px solid var(--_ink); border-radius: calc(var(--_radius) * .5);
  cursor: pointer;
}
.ar-btn--primary { background: var(--_accent); border-color: var(--_accent); color: var(--_on-accent); }
.ar-btn:hover { box-shadow: inset 0 0 0 1px currentColor; }
.ar-btn--primary:hover { box-shadow: inset 0 0 0 2px var(--_on-accent); }

.ar-run { display: flex; flex-wrap: wrap; align-items: center; gap: .5rem .75rem; min-width: 0; }
.ar-run__label { font-family: var(--_mono); font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; color: var(--_muted); }
.ar-run__targets { display: flex; flex-wrap: wrap; gap: .4rem; }
.ar-chip {
  display: inline-flex; align-items: center; gap: .3rem;
  min-height: 2.75rem; padding: .4rem .8rem;
  font: inherit; font-size: .9rem; font-weight: 600; line-height: 1.1;
  color: var(--_ink); background: var(--_bg);
  border: 1px solid var(--_rule); border-radius: calc(var(--_radius) * .5);
  text-decoration: none; cursor: pointer;
}
.ar-chip:hover { border-color: var(--_ink); }
.ar-chip[aria-expanded="true"] { border-color: var(--_accent); box-shadow: inset 0 -3px 0 var(--_accent); }
.ar-chip__out { font-size: .85em; opacity: .75; }

.ar-status { flex-basis: 100%; margin: 0; min-height: 1.4em; font-size: .9rem; color: var(--_muted); }
.ar-status:empty { min-height: 0; }

/* ------------------------------------------------------------ the command */
.ar-cmd {
  margin-top: 1rem;
  padding: 1rem;
  background: var(--_term-bg); color: var(--_term-ink);
  border-radius: calc(var(--_radius) * .6);
}
.ar-cmd[hidden] { display: none; }
.ar-cmd__bar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: .6rem 1rem; margin-bottom: .75rem; }
.ar-cmd__title { margin: 0; font-size: .95rem; }
.ar-seg { display: inline-flex; border: 1px solid currentColor; border-radius: calc(var(--_radius) * .5); overflow: hidden; }
.ar-seg__btn {
  min-height: 2.5rem; padding: .35rem .8rem;
  font: inherit; font-size: .85rem; font-weight: 600;
  color: inherit; background: transparent; border: 0; cursor: pointer;
}
.ar-seg__btn + .ar-seg__btn { border-left: 1px solid currentColor; }
.ar-seg__btn[aria-pressed="true"] { background: var(--_term-ink); color: var(--_term-bg); }
.ar-cmd :focus-visible { outline-color: var(--_term-ink); }
.ar-cmd__code {
  margin: 0; padding: .85rem 1rem; overflow: auto;
  background: rgba(255, 255, 255, .06); border: 1px solid rgba(255, 255, 255, .18);
  border-radius: calc(var(--_radius) * .4);
  font-family: var(--_mono); font-size: .8rem; line-height: 1.55;
  white-space: pre-wrap; overflow-wrap: anywhere;
}
.ar-cmd__code code { font: inherit; color: inherit; background: none; padding: 0; }
.ar-cmd .ar-prompt__more { color: var(--_term-ink); margin-bottom: 0; }
.ar-cmd__foot { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: .75rem 1rem; margin-top: .75rem; }
.ar-cmd__note { margin: 0; font-size: .88rem; max-width: 52ch; }
.ar-cmd__note a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: .18em; }
.ar-cmd .ar-btn { color: var(--_term-ink); border-color: var(--_term-ink); }
.ar-cmd .ar-status { color: inherit; margin-top: .5rem; }

/* ------------------------------------------------------------ the page menu */
.ar-page { display: flex; flex-wrap: wrap; align-items: center; gap: .25rem 1rem; font-size: .88rem; }
.ar-page__list { display: flex; flex-wrap: wrap; align-items: center; gap: .25rem 1rem; margin: 0; padding: 0; list-style: none; }
.ar-page__label { margin: 0; font-family: var(--ar-mono, inherit); font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; color: var(--ar-muted, inherit); }
.ar-page__link,
.ar-page__btn {
  display: inline-flex; align-items: center; min-height: 2.75rem; padding: 0;
  font: inherit; color: var(--ar-accent, inherit); background: none; border: 0; cursor: pointer;
  text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: .2em;
}
.ar-page__link:hover, .ar-page__btn:hover { text-decoration-thickness: 2px; }
.ar-page .ar-status { margin-top: .1rem; }

/* ------------------------------------------------------------ helpers */
.ar-sr, .ar-offscreen {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}

@media (prefers-reduced-motion: no-preference) {
  .ar-btn, .ar-chip, .ar-seg__btn { transition: background-color .15s, border-color .15s, box-shadow .15s, color .15s; }
  .ar-prompt__more::after { transition: transform .2s cubic-bezier(.2, .8, .2, 1); }
  .ar-prompt.is-ready .ar-cmd:not([hidden]) { animation: ar-unfold .22s cubic-bezier(.2, .8, .2, 1); }
  @keyframes ar-unfold { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: none; } }
}

@media (forced-colors: active) {
  .ar-prompt, .ar-prompt__text, .ar-chip, .ar-btn, .ar-cmd, .ar-cmd__code { border: 1px solid CanvasText; }
  .ar-chip[aria-expanded="true"], .ar-seg__btn[aria-pressed="true"] { outline: 2px solid Highlight; }
  .ar-prompt.is-collapsed .ar-prompt__text code, .ar-cmd.is-collapsed .ar-cmd__code code { -webkit-mask-image: none; mask-image: none; }
}

/* Paper gets the whole prompt. Sites already lift the panel's max-height for print; the fold on the
   text is the kit's, so the kit lifts it too. */
@media print {
  .ar-prompt.is-collapsed .ar-prompt__text code { max-height: none; -webkit-mask-image: none; mask-image: none; }
}