/* ==========================================================================
   Mirana Labs, chatbot.css
   The site wide enquiry assistant: a fixed launcher and a dialog panel.

   Self contained on purpose. It reads the tokens from main.css :root and adds
   no rule that reaches outside .mlchat, so it can be added or removed without
   touching the cascade the rest of the site depends on.

   01 Shell & launcher      04 Quick replies & controls
   02 Panel                 05 Fields
   03 Messages              06 Responsive & reduced motion
   ========================================================================== */

/* 01. Shell & launcher ---------------------------------------------------- */

/* Hidden until chatbot.js takes over. Without JavaScript there is no
   conversation to have, and a launcher that does nothing is worse than none.
   The script adds .is-ready. */
.mlchat { display: none; }
.mlchat.is-ready { display: block; }

.mlchat {
  /* Sits above the header (50) and the mobile menu (60) so the panel is never
     half covered, and below the skip link (100) which must always win. */
  --mlchat-z: 70;
  /* The script raises this when the footer's bottom bar, which holds the
     Back to top link, scrolls into view, so the launcher never covers it. */
  --mlchat-lift: 0px;
  --mlchat-edge: clamp(1rem, .6rem + 1vw, 1.75rem);
  --mlchat-launcher: 3.5rem;
}

.mlchat__launcher {
  position: fixed;
  right: var(--mlchat-edge);
  bottom: calc(var(--mlchat-edge) + var(--mlchat-lift) + env(safe-area-inset-bottom, 0px));
  z-index: var(--mlchat-z);
  display: grid;
  place-items: center;
  width: var(--mlchat-launcher);
  height: var(--mlchat-launcher);
  margin: 0;
  padding: 0;
  border: 1px solid var(--color-line-accent);
  border-radius: 50%;
  background: var(--color-accent);
  color: var(--color-on-accent);
  cursor: pointer;
  box-shadow: 0 10px 30px rgba(0, 0, 0, .55), 0 0 0 1px rgba(0, 226, 208, .18);
  transition:
    transform var(--dur-fast) var(--ease-out),
    bottom var(--dur) var(--ease-out),
    background-color var(--dur-fast) var(--ease-out);
}
.mlchat__launcher:hover { background: var(--color-accent-bright); transform: translateY(-2px); }
.mlchat__launcher:active { transform: translateY(0); }

.mlchat__launcher-icon {
  grid-area: 1 / 1;
  display: block;
  width: 1.5rem;
  height: 1.5rem;
  transition: opacity var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-out);
}
.mlchat__launcher-icon svg {
  display: block;
  width: 100%;
  height: 100%;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.mlchat__launcher-icon--close { opacity: 0; transform: rotate(-45deg); }
.mlchat.is-open .mlchat__launcher-icon { opacity: 0; transform: rotate(45deg); }
.mlchat.is-open .mlchat__launcher-icon--close { opacity: 1; transform: rotate(0); }

/* A quiet halo, not a notification badge. It claims nothing. */
.mlchat__ping {
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 1px solid var(--color-line-accent);
  opacity: .8;
  pointer-events: none;
}
.mlchat.is-open .mlchat__ping { opacity: 0; }

/* Focus is visible on every control, on the dark background and on accent. */
.mlchat :focus-visible,
.mlchat__launcher:focus-visible {
  outline: 2px solid var(--color-accent-bright);
  outline-offset: 3px;
}
.mlchat__launcher:focus-visible { outline-color: var(--color-text); outline-offset: 4px; }

/* 02. Panel --------------------------------------------------------------- */

.mlchat__panel {
  position: fixed;
  right: var(--mlchat-edge);
  bottom: calc(var(--mlchat-edge) + var(--mlchat-lift) + var(--mlchat-launcher) + .75rem + env(safe-area-inset-bottom, 0px));
  z-index: var(--mlchat-z);
  display: flex;
  flex-direction: column;
  width: min(380px, calc(100vw - (var(--mlchat-edge) * 2)));
  max-height: min(34rem, calc(100vh - var(--mlchat-edge) * 2 - var(--mlchat-launcher) - 2rem));
  overflow: hidden;
  border: 1px solid var(--color-line-strong);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: 0 24px 70px rgba(0, 0, 0, .7);
  transition: opacity var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-out);
}
.mlchat__panel[hidden] { display: none; }
.mlchat__panel.is-entering { opacity: 0; transform: translateY(12px); }

.mlchat__head {
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: .875rem 1rem;
  border-bottom: 1px solid var(--color-line);
  background: var(--color-surface-2);
}
.mlchat__avatar {
  flex: none;
  display: grid;
  place-items: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--radius-md);
  background: var(--color-surface-3);
  border: 1px solid var(--color-line-accent);
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: .08em;
}
.mlchat__headings { min-width: 0; flex: 1 1 auto; }
.mlchat__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1rem;
  line-height: 1.25;
  letter-spacing: var(--tracking-heading);
  color: var(--color-text);
}
.mlchat__sub {
  margin: .15rem 0 0;
  font-size: var(--fs-small);
  line-height: 1.35;
  /* --color-muted-light, not --color-muted, so the supporting line still
     clears WCAG AA against #0E121B. */
  color: var(--color-muted-light);
}
.mlchat__close {
  flex: none;
  display: grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  padding: 0;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--color-muted-light);
  cursor: pointer;
  transition: color var(--dur-fast), border-color var(--dur-fast);
}
.mlchat__close:hover { color: var(--color-text); border-color: var(--color-line-strong); }
.mlchat__close svg {
  display: block;
  width: 1rem;
  height: 1rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
}

/* The honeypot. Off screen, hidden from assistive tech, out of the tab order. */
.mlchat__trap {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* 03. Messages ------------------------------------------------------------ */

.mlchat__log {
  flex: 1 1 auto;
  min-height: 7rem;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: .5rem;
}

.mlchat__msg {
  max-width: 88%;
  padding: .6rem .8rem;
  border-radius: var(--radius-md);
  font-size: var(--fs-small);
  line-height: 1.5;
  overflow-wrap: anywhere;
}
.mlchat__msg--bot {
  align-self: flex-start;
  background: var(--color-surface-2);
  border: 1px solid var(--color-line);
  color: var(--color-text);
}
.mlchat__msg--user {
  align-self: flex-end;
  background: var(--color-surface-3);
  border: 1px solid var(--color-line-accent);
  color: var(--color-text);
}
.mlchat__msg--note {
  align-self: flex-start;
  background: transparent;
  border: 1px dashed var(--color-line-strong);
  color: var(--color-muted-light);
}
.mlchat__msg--error {
  align-self: flex-start;
  background: rgba(255, 122, 133, .08);
  border: 1px solid rgba(255, 122, 133, .4);
  color: var(--color-danger);
}
.mlchat__msg p { margin: 0 0 .4rem; }
.mlchat__msg p:last-child { margin-bottom: 0; }
.mlchat__msg a { color: var(--color-accent); }
.mlchat__price {
  display: block;
  font-family: var(--font-display);
  font-size: 1.0625rem;
  letter-spacing: var(--tracking-heading);
  color: var(--color-accent);
}

.mlchat__summary {
  margin: .35rem 0 0;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: .2rem .75rem;
  font-size: var(--fs-small);
}
.mlchat__summary dt {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--color-muted-light);
}
.mlchat__summary dd { margin: 0; color: var(--color-text); overflow-wrap: anywhere; }

/* 04. Quick replies & controls -------------------------------------------- */

.mlchat__foot {
  flex: none;
  padding: .75rem 1rem calc(.875rem + env(safe-area-inset-bottom, 0px));
  border-top: 1px solid var(--color-line);
  background: var(--color-surface-2);
}

.mlchat__replies {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
}

.mlchat__chip {
  appearance: none;
  padding: .45rem .7rem;
  border: 1px solid var(--color-line-strong);
  border-radius: 999px;
  background: var(--color-surface-3);
  color: var(--color-text);
  font-family: inherit;
  font-size: var(--fs-small);
  line-height: 1.2;
  cursor: pointer;
  transition: border-color var(--dur-fast), color var(--dur-fast), background-color var(--dur-fast);
}
.mlchat__chip:hover {
  border-color: var(--color-line-accent);
  color: var(--color-accent);
}
/* The answer already given, when the visitor has stepped back to change it. */
.mlchat__chip[aria-pressed="true"] {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: rgba(0, 226, 208, .1);
}

.mlchat__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-top: .6rem;
  align-items: center;
}

.mlchat__btn {
  appearance: none;
  padding: .5rem .9rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-line-strong);
  background: transparent;
  color: var(--color-text);
  font-family: inherit;
  font-size: var(--fs-small);
  line-height: 1.2;
  cursor: pointer;
  transition: border-color var(--dur-fast), background-color var(--dur-fast), color var(--dur-fast);
}
.mlchat__btn:hover { border-color: var(--color-line-accent); color: var(--color-accent); }
.mlchat__btn--primary {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-on-accent);
  font-weight: 600;
}
.mlchat__btn--primary:hover { background: var(--color-accent-bright); border-color: var(--color-accent-bright); color: var(--color-on-accent); }
.mlchat__btn[disabled] { opacity: .55; cursor: default; }
.mlchat__btn--link {
  border-color: transparent;
  padding-inline: .3rem;
  color: var(--color-muted-light);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.mlchat__btn--link:hover { color: var(--color-text); border-color: transparent; }

/* 05. Fields -------------------------------------------------------------- */

.mlchat__field { display: block; }
.mlchat__label {
  display: block;
  margin-bottom: .3rem;
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--color-muted-light);
}
.mlchat__input,
.mlchat__textarea {
  width: 100%;
  padding: .55rem .7rem;
  border: 1px solid var(--color-line-strong);
  border-radius: var(--radius-sm);
  background: var(--color-bg-soft);
  color: var(--color-text);
  font-family: inherit;
  font-size: var(--fs-small);
  line-height: 1.5;
}
.mlchat__textarea { resize: vertical; min-height: 4.5rem; }
.mlchat__input::placeholder,
.mlchat__textarea::placeholder { color: var(--color-muted); }
.mlchat__input:focus-visible,
.mlchat__textarea:focus-visible { border-color: var(--color-accent); }
.mlchat__error {
  margin: .35rem 0 0;
  font-size: var(--fs-small);
  color: var(--color-danger);
}
.mlchat__error:empty { display: none; }

/* 06. Responsive & reduced motion ----------------------------------------- */

/* Near full screen on a phone. Inset rather than width keeps it inside the
   viewport at 320px, so nothing can push the page sideways. */
@media (max-width: 599px) {
  .mlchat.is-open .mlchat__panel {
    inset: .5rem .5rem calc(.5rem + env(safe-area-inset-bottom, 0px));
    right: .5rem;
    bottom: calc(.5rem + env(safe-area-inset-bottom, 0px));
    width: auto;
    max-height: none;
  }
  /* The launcher would sit on top of a full screen panel, and the panel has
     its own close button, so it steps out of the way. */
  .mlchat.is-open .mlchat__launcher { display: none; }
  .mlchat__msg { max-width: 92%; }
}

@media (prefers-reduced-motion: reduce) {
  .mlchat *,
  .mlchat__launcher,
  .mlchat__panel {
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
  }
  .mlchat__panel.is-entering { opacity: 1; transform: none; }
}