/* Quinine AI Assistant widget (chatbot.js). Existing tokens only (tokens.css); follows
   :root[data-theme]. Closed: pill launcher (desktop) / "Ask AI" pill (<= 640px) / Q-only circle
   (data-launcher="compact"), plus the one-time intro bubble. Desktop: 380 x 560 panel above the
   launcher. <= 640px: full-screen dialog.
   Motion: opacity/transform only, none under prefers-reduced-motion. */

.qchat {
  --qchat-gap: 16px;
  --qchat-launcher: 56px;
  position: fixed;
  right: calc(var(--qchat-gap) + env(safe-area-inset-right, 0px));
  bottom: calc(var(--qchat-gap) + env(safe-area-inset-bottom, 0px));
  z-index: 120;
  font-family: var(--font-body);
  font-size: var(--text-body);
  color: var(--color-text);
  pointer-events: none;
}
.qchat > * { pointer-events: auto; }
.nav-open .qchat { visibility: hidden; }
.qchat-sr {
  position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; border: 0;
  overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap;
}
.qchat [hidden] { display: none !important; }
:where(.qchat) button { font: inherit; }
.qchat :focus-visible { outline: 2px solid var(--color-focus); outline-offset: 2px; }

/* ------------------------------------------------------------------ launcher */
/* Pill (desktop): [Q chip] "Ask Quinine AI" / "AI Security Assistant" [chat glyph] on the navy
   band, with a fine signal-coloured border, a soft low-alpha glow and a short circuit trace.
   <= 640px: "Ask AI" + Q. data-launcher="compact": the Q-only circle. */
.qchat-launcher {
  position: relative;
  display: flex; align-items: center; gap: 8px;
  height: var(--qchat-launcher);
  min-width: var(--qchat-launcher);
  margin: 0; padding: 0 13px 0 7px;
  border: 1px solid color-mix(in srgb, var(--color-on-band-signal) 34%, transparent);
  border-radius: var(--radius-pill);
  background: linear-gradient(135deg, var(--color-band-2), var(--color-band) 62%);
  color: var(--color-on-band);
  box-shadow:
    inset 0 1px 0 color-mix(in srgb, var(--color-on-band) 12%, transparent),
    0 10px 28px -14px color-mix(in srgb, var(--brand-glow) 55%, transparent),
    var(--shadow-pop);
  text-align: left;
  cursor: pointer;
  transition: transform var(--dur-fast) var(--ease-out), box-shadow var(--dur-base) ease, border-color var(--dur-fast) ease;
}
/* Tiny circuit trace along the lower edge, from the Q chip towards the label. */
.qchat-launcher::after {
  content: ""; position: absolute; left: 30px; bottom: -1px; width: 56px; height: 1px;
  background: linear-gradient(90deg, color-mix(in srgb, var(--color-on-band-signal) 70%, transparent), transparent);
  pointer-events: none;
}
.qchat-launcher__mark {
  display: grid; place-items: center; flex: 0 0 auto;
  width: 38px; height: 38px;
  border: 1px solid color-mix(in srgb, var(--color-on-band-signal) 28%, transparent);
  border-radius: 50%;
  background: color-mix(in srgb, var(--color-band-deep) 55%, transparent);
}
.qchat-launcher .qmark { width: 24px; color: var(--color-on-band); }
.qchat-launcher__text { display: flex; flex-direction: column; min-width: 0; line-height: 1.2; white-space: nowrap; }
.qchat-launcher__primary { font-size: 0.9375rem; font-weight: var(--weight-strong); letter-spacing: -0.005em; color: var(--color-on-band); }
.qchat-launcher__secondary { margin-top: 2px; font-size: 0.75rem; font-weight: var(--weight-body); color: var(--color-on-band-muted); }
/* Speech-bubble glyph (decorative): a rounded outline with a small tail. */
.qchat-launcher__glyph {
  position: relative; flex: 0 0 auto;
  width: 16px; height: 13px; margin-left: 4px;
  border: 1.5px solid var(--color-on-band-signal); border-radius: 4px;
  opacity: 0.9;
}
.qchat-launcher__glyph::after {
  content: ""; position: absolute; left: 2px; bottom: -4px; width: 5px; height: 5px;
  border-left: 1.5px solid var(--color-on-band-signal); border-bottom: 1.5px solid var(--color-on-band-signal);
  background: var(--color-band);
  transform: skewY(-35deg);
}
.qchat-launcher:hover {
  transform: translateY(-1px);
  border-color: color-mix(in srgb, var(--color-on-band-signal) 60%, transparent);
  box-shadow:
    inset 0 1px 0 color-mix(in srgb, var(--color-on-band) 16%, transparent),
    0 12px 32px -12px color-mix(in srgb, var(--brand-glow) 70%, transparent),
    var(--shadow-pop);
}
.qchat-launcher:active { transform: translateY(1px); }
.qchat .qchat-launcher:focus-visible { outline: 2px solid var(--color-focus); outline-offset: 3px; }
.qchat-launcher__dot {
  position: absolute; top: 4px; right: 6px;
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--color-signal);
  border: 2px solid var(--color-band);
}

/* Compact: the Q-only circle (on /contact, while the panel is open, text field focused on mobile). */
.qchat[data-launcher="compact"] .qchat-launcher {
  justify-content: center; gap: 0;
  width: var(--qchat-launcher); padding: 0;
}
.qchat[data-launcher="compact"] :is(.qchat-launcher__text, .qchat-launcher__glyph),
.qchat[data-launcher="compact"] .qchat-launcher::after { display: none; }
.qchat[data-launcher="compact"] .qchat-launcher__mark { border-color: transparent; background: transparent; }
.qchat[data-launcher="compact"] .qchat-launcher .qmark { width: 26px; }

/* Entrance: the launcher fades and rises in once on load. */
@media (prefers-reduced-motion: no-preference) {
  .qchat-launcher { animation: qchat-launcher-in var(--dur-slow) var(--ease-out) backwards; }
}
@keyframes qchat-launcher-in {
  from { opacity: 0; transform: translateY(10px) scale(0.96); }
  to { opacity: 1; transform: none; }
}

/* ------------------------------------------------------------------ intro bubble */
.qchat-intro {
  position: absolute;
  right: 0;
  bottom: calc(var(--qchat-launcher) + 14px);
  width: 288px;
  max-width: calc(100vw - 2 * var(--qchat-gap) - env(safe-area-inset-left, 0px) - env(safe-area-inset-right, 0px));
  border: 1px solid color-mix(in srgb, var(--color-on-band-signal) 34%, transparent);
  border-radius: var(--radius-l);
  background: var(--color-band);
  color: var(--color-on-band);
  box-shadow: 0 14px 34px -18px color-mix(in srgb, var(--brand-glow) 55%, transparent), var(--shadow-pop);
  transform-origin: bottom right;
}
/* Connector: a small diamond pointing down at the launcher's Q end. */
.qchat-intro::after {
  content: ""; position: absolute; right: 30px; bottom: -7px;
  width: 12px; height: 12px;
  border-right: 1px solid color-mix(in srgb, var(--color-on-band-signal) 34%, transparent);
  border-bottom: 1px solid color-mix(in srgb, var(--color-on-band-signal) 34%, transparent);
  background: var(--color-band);
  transform: rotate(45deg);
  pointer-events: none;
}
.qchat-intro__open {
  display: block; width: 100%; min-height: 44px;
  margin: 0; padding: 14px 52px 14px 16px;
  border: 0; border-radius: inherit;
  background: transparent; color: inherit;
  text-align: left; cursor: pointer;
}
.qchat-intro__open:hover .qchat-intro__title { text-decoration: underline; text-underline-offset: 3px; }
.qchat .qchat-intro :focus-visible { outline: 2px solid var(--color-on-band-signal); outline-offset: -2px; }
.qchat-intro__head { display: flex; align-items: center; gap: var(--space-2); }
.qchat-intro__mark { display: grid; place-items: center; flex: 0 0 auto; }
.qchat-intro__mark .qmark { width: 20px; color: var(--color-on-band); }
.qchat-intro__title { font-size: 0.9375rem; font-weight: var(--weight-strong); line-height: 1.3; color: var(--color-on-band); }
.qchat-intro__text { display: block; margin-top: 6px; font-size: 0.875rem; line-height: 1.45; color: var(--color-on-band-muted); }
.qchat-intro__dismiss {
  position: absolute; top: 2px; right: 2px;
  display: grid; place-items: center;
  width: 44px; height: 44px; margin: 0; padding: 0;
  border: 0; border-radius: var(--radius-m);
  background: transparent; color: var(--color-on-band-muted);
  cursor: pointer;
  transition: color var(--dur-fast) ease, background-color var(--dur-fast) ease;
}
.qchat-intro__dismiss:hover { color: var(--color-on-band); background: color-mix(in srgb, var(--color-on-band) 10%, transparent); }
.qchat-intro__dismiss .qchat-icon { width: 12px; height: 12px; }
.qchat-intro__dismiss .qchat-icon::before, .qchat-intro__dismiss .qchat-icon::after { width: 12px; }
@media (prefers-reduced-motion: no-preference) {
  .qchat-intro:not([hidden]) { animation: qchat-intro-in var(--dur-slow) var(--ease-out) both; }
}
@keyframes qchat-intro-in {
  from { opacity: 0; transform: translateY(8px) scale(0.97); }
  to { opacity: 1; transform: none; }
}

/* ------------------------------------------------------------------ panel */
.qchat-panel {
  position: absolute;
  right: 0;
  bottom: calc(var(--qchat-launcher) + 12px);
  display: flex; flex-direction: column;
  width: 380px;
  height: 560px;
  max-width: calc(100vw - 2 * var(--qchat-gap));
  max-height: calc(100vh - var(--qchat-launcher) - 3 * var(--qchat-gap));
  max-height: calc(100dvh - var(--qchat-launcher) - 3 * var(--qchat-gap) - env(safe-area-inset-bottom, 0px));
  overflow: hidden;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-l);
  background: var(--color-surface);
  box-shadow: var(--shadow-pop);
  transform-origin: bottom right;
}
@media (prefers-reduced-motion: no-preference) {
  .qchat-panel:not([hidden]) { animation: qchat-in var(--dur-base) var(--ease-out) both; }
}
@keyframes qchat-in {
  from { opacity: 0; transform: translateY(8px) scale(0.98); }
  to { opacity: 1; transform: none; }
}

.qchat-header {
  display: flex; align-items: center; gap: var(--space-3);
  padding: var(--space-3) var(--space-3) var(--space-3) var(--space-4);
  background: var(--color-band);
  color: var(--color-on-band);
}
.qchat-header :focus-visible { outline-color: var(--color-on-band-signal); }
.qchat-header__mark { display: grid; place-items: center; flex: 0 0 auto; color: var(--color-on-band); }
.qchat-header__mark .qmark { width: 28px; }
.qchat-header__text { flex: 1 1 auto; min-width: 0; }
.qchat-title {
  margin: 0;
  font-size: var(--text-h4); line-height: 1.25; font-weight: var(--weight-heading);
  letter-spacing: -0.01em;
  color: var(--color-on-band);
}
.qchat-note { margin: 2px 0 0; font-size: 0.8125rem; line-height: 1.35; color: var(--color-on-band-muted); }
.qchat-header__actions { display: flex; gap: var(--space-1); flex: 0 0 auto; }
.qchat-icon-btn {
  display: grid; place-items: center;
  width: 40px; height: 40px; margin: 0; padding: 0;
  border: 1px solid transparent; border-radius: var(--radius-s);
  background: transparent; color: var(--color-on-band);
  cursor: pointer;
  transition: background-color var(--dur-fast) ease, border-color var(--dur-fast) ease;
}
.qchat-icon-btn:hover { background: color-mix(in srgb, var(--color-on-band) 10%, transparent); border-color: color-mix(in srgb, var(--color-on-band) 25%, transparent); }
.qchat-icon { position: relative; display: block; width: 16px; height: 16px; }
.qchat-icon::before, .qchat-icon::after {
  content: ""; position: absolute; left: 0; top: 50%; width: 16px; height: 2px; margin-top: -1px;
  border-radius: 1px; background: currentColor;
}
.qchat-icon--minimise::after { display: none; }
.qchat-icon--minimise::before { top: auto; bottom: 2px; }
.qchat-icon--close::before { transform: rotate(45deg); }
.qchat-icon--close::after { transform: rotate(-45deg); }

.qchat-toolbar {
  display: flex; align-items: center; justify-content: space-between; gap: var(--space-3);
  padding: var(--space-2) var(--space-4);
  border-bottom: 1px solid var(--color-line);
  background: var(--color-bg-alt);
}
.qchat-disclaimer { margin: 0; font-size: 0.75rem; line-height: 1.4; color: var(--color-text-muted); }
.qchat-clear {
  flex: 0 0 auto;
  min-height: 32px; margin: 0; padding: 4px 10px;
  border: 1px solid var(--color-line-strong); border-radius: var(--radius-s);
  background: var(--color-surface); color: var(--color-ink);
  font-size: 0.8125rem; font-weight: var(--weight-label);
  cursor: pointer;
}
.qchat-clear:hover { border-color: var(--color-ink); }

/* ------------------------------------------------------------------ messages */
.qchat-messages {
  flex: 1 1 auto; min-height: 0;
  display: flex; flex-direction: column; gap: var(--space-3);
  padding: var(--space-4);
  overflow-y: auto; overflow-x: hidden;
  overscroll-behavior: contain;
  background: var(--color-surface);
}
.qchat-msg {
  max-width: 88%;
  padding: 10px 14px;
  border-radius: var(--radius-m);
  font-size: 0.9375rem; line-height: 1.55;
  overflow-wrap: anywhere;
}
.qchat-msg--user {
  align-self: flex-end;
  border-bottom-right-radius: var(--radius-xs);
  background: var(--color-accent);
  color: var(--color-on-accent);
}
.qchat-msg--assistant, .qchat-msg--intro {
  align-self: flex-start;
  border: 1px solid var(--color-line);
  border-bottom-left-radius: var(--radius-xs);
  background: var(--color-bg-alt);
  color: var(--color-text);
}
.qchat-msg--error {
  align-self: flex-start;
  border: 1px solid var(--color-line);
  border-left: 3px solid var(--color-alert);
  background: var(--color-alert-soft);
  color: var(--color-alert-ink);
}
.qchat-msg__body p, .qchat-msg__body ul, .qchat-msg__body ol { margin: 0; }
.qchat-msg__body > :is(p, ul, ol) + :is(p, ul, ol) { margin-top: var(--space-2); }
.qchat-msg__body ul, .qchat-msg__body ol { padding-left: 1.25em; }
.qchat-msg__body li + li { margin-top: 2px; }
.qchat-msg__body strong { font-weight: var(--weight-strong); color: var(--color-ink); }
.qchat-msg--user .qchat-msg__body strong { color: inherit; }

.qchat-links {
  display: flex; flex-wrap: wrap; gap: var(--space-2);
  margin: var(--space-3) 0 0; padding: 0; list-style: none;
}
.qchat-link {
  display: inline-flex; align-items: center;
  min-height: 32px; padding: 4px 12px;
  border: 1px solid var(--color-line-strong); border-radius: var(--radius-pill);
  background: var(--color-surface);
  color: var(--color-link);
  font-size: 0.8125rem; font-weight: var(--weight-label); line-height: 1.3;
  text-decoration: none;
}
.qchat-link::after { content: "\2192"; margin-left: 6px; }
.qchat-link:hover { border-color: var(--color-link); color: var(--color-link-hover); text-decoration: none; }

.qchat-suggestions {
  display: flex; flex-direction: column; align-items: flex-start; gap: var(--space-2);
  margin: 0; padding: 0; list-style: none;
}
.qchat-suggestion {
  min-height: 36px; margin: 0; padding: 6px 12px;
  border: 1px solid var(--color-line-strong); border-radius: var(--radius-pill);
  background: var(--color-surface); color: var(--color-link);
  font-size: 0.875rem; text-align: left; line-height: 1.35;
  cursor: pointer;
  transition: border-color var(--dur-fast) ease, background-color var(--dur-fast) ease;
}
.qchat-suggestion:hover { border-color: var(--color-link); background: var(--color-accent-soft); }

.qchat-typing {
  align-self: flex-start;
  display: inline-flex; align-items: center; gap: var(--space-2);
  padding: 8px 12px;
  border: 1px solid var(--color-line); border-radius: var(--radius-m);
  background: var(--color-bg-alt);
  color: var(--color-ink);
  font-size: 0.8125rem;
}
.qchat-typing .qmark { width: 18px; }
.qchat-typing__text { color: var(--color-text-muted); }

/* ------------------------------------------------------------------ composer */
.qchat-form {
  flex: 0 0 auto;
  padding: var(--space-3) var(--space-4) var(--space-3);
  border-top: 1px solid var(--color-line);
  background: var(--color-surface);
}
.qchat-input {
  display: block; width: 100%; box-sizing: border-box;
  min-height: 44px; max-height: 8.5em;
  field-sizing: content;
  margin: 0; padding: 10px 12px;
  border: 1px solid var(--color-line-strong); border-radius: var(--radius-m);
  background: var(--color-bg);
  color: var(--color-ink);
  font: inherit; font-size: 1rem; line-height: 1.45;
  resize: none;
}
.qchat-input::placeholder { color: var(--color-text-muted); opacity: 1; }
.qchat .qchat-input:focus-visible { outline: 2px solid var(--color-focus); outline-offset: 1px; border-color: var(--color-focus); }
.qchat-form__row { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); margin-top: var(--space-2); }
.qchat-count { font-family: var(--font-mono-stack); font-size: var(--text-label); color: var(--color-text-muted); }
.qchat-count--near { color: var(--color-alert-ink); }
.qchat-send {
  min-height: 40px; margin: 0; padding: 8px 18px;
  border: 1px solid transparent; border-radius: var(--radius-s);
  background: var(--color-accent); color: var(--color-on-accent);
  font-size: 0.875rem; font-weight: var(--weight-strong);
  cursor: pointer;
  transition: background-color var(--dur-fast) ease;
}
.qchat-send:hover:not([disabled]) { background: var(--color-accent-hover); }
.qchat-send[disabled] { opacity: 0.55; cursor: not-allowed; }
.qchat[data-busy="true"] .qchat-send[disabled] { cursor: progress; }

/* ------------------------------------------------------------------ mobile: full screen */
@media (max-width: 640px) {
  .qchat { --qchat-launcher: 52px; }
  .qchat-launcher { gap: 8px; padding: 0 16px 0 6px; }
  .qchat-launcher__mark { width: 40px; height: 40px; }
  .qchat-launcher__brand, .qchat-launcher__secondary, .qchat-launcher__glyph, .qchat-launcher::after { display: none; }
  .qchat-intro { width: 280px; }
  .qchat-panel {
    position: fixed; inset: 0;
    width: auto; height: auto; max-width: none; max-height: none;
    border: 0; border-radius: 0;
    padding: env(safe-area-inset-top, 0px) env(safe-area-inset-right, 0px) env(safe-area-inset-bottom, 0px) env(safe-area-inset-left, 0px);
    box-shadow: none;
    background: var(--color-band);
  }
  .qchat-header { padding-left: var(--space-4); }
  .qchat-toolbar { padding: var(--space-2) var(--space-4); }
  .qchat-msg { max-width: 92%; }
  .qchat[data-state="open"] .qchat-launcher { visibility: hidden; }
  html.qchat-lock, html.qchat-lock body { overflow: hidden; }
}

@media (prefers-reduced-motion: reduce) {
  .qchat-launcher, .qchat-icon-btn, .qchat-suggestion, .qchat-send, .qchat-intro__dismiss { transition: none; }
  .qchat-launcher:hover, .qchat-launcher:active { transform: none; }
}
@media (forced-colors: active) {
  .qchat-launcher, .qchat-panel, .qchat-msg, .qchat-suggestion, .qchat-link, .qchat-send, .qchat-intro { border: 1px solid CanvasText; }
  .qchat-launcher { background: ButtonFace; color: ButtonText; box-shadow: none; }
  .qchat-launcher__mark { border-color: ButtonText; background: transparent; }
  .qchat-launcher .qmark, .qchat-launcher__primary, .qchat-launcher__secondary { color: ButtonText; }
  .qchat-launcher__glyph, .qchat-launcher__glyph::after { border-color: ButtonText; background: ButtonFace; }
  .qchat-launcher::after { display: none; }
  .qchat-intro { background: Canvas; color: CanvasText; box-shadow: none; }
  .qchat-intro::after { border-color: CanvasText; background: Canvas; }
  .qchat-intro .qmark, .qchat-intro__title, .qchat-intro__text, .qchat-intro__dismiss { color: CanvasText; }
  .qchat-icon::before, .qchat-icon::after { forced-color-adjust: none; background: ButtonText; }
}
@media print { .qchat { display: none; } }