/* Chat widget — consumes the marketing page's token vocabulary (light + dark
   both come free via the tokens; no hex here beyond what tokens provide). */

.chat-widget {
  position: fixed;
  right: clamp(16px, 3vw, 28px);
  bottom: clamp(16px, 3vw, 28px);
  z-index: 90;
  font-family: var(--font-body);
}

.chat-launcher {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 54px;
  height: 54px;
  border: none;
  border-radius: 50%;
  background: var(--accent-solid);
  color: #fff;
  cursor: pointer;
  box-shadow: 0 6px 24px rgba(21, 19, 31, 0.25);
  transition: background var(--dur-base) var(--ease-standard), transform var(--dur-fast) var(--ease-out);
}
.chat-launcher:hover { background: var(--accent-hover); }
@media (hover: hover) and (pointer: fine) {
  .chat-launcher:hover { transform: translateY(-1px); }
}
.chat-launcher:active { background: var(--accent-press); transform: scale(0.95); }
.chat-launcher:focus-visible { box-shadow: 0 0 0 3px var(--focus); }

.chat-unread {
  position: absolute;
  top: 2px;
  right: 2px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--alert);
  border: 2px solid var(--bg);
  transition: opacity var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out);
}
@starting-style { .chat-unread { opacity: 0; transform: scale(0.7); } }
.chat-unread::after {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: 50%;
  background: var(--alert);
  pointer-events: none;
  /* One-shot ping on appearance only — fires once, does not repeat. */
  animation: chat-unread-ping 600ms var(--ease-out) 1 both;
}
@keyframes chat-unread-ping {
  from { opacity: 0.45; transform: scale(1); }
  to   { opacity: 0;    transform: scale(2.6); }
}

/* Screen-reader-only content: kept in the a11y tree, removed from layout/paint. */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.chat-panel {
  position: absolute;
  right: 0;
  bottom: 68px;
  width: min(360px, calc(100vw - 32px));
  max-height: calc(100dvh - 96px);
  overflow-y: auto;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
  transform-origin: bottom right;
  transition: opacity var(--dur-base) var(--ease-out),
              transform var(--dur-base) var(--ease-out),
              visibility 0s linear 0s;
}

.chat-panel[hidden] {
  display: flex;
  visibility: hidden;
  opacity: 0;
  transform: scale(0.96) translateY(6px);
  pointer-events: none;
  /* Exits run faster than entries: 140ms out vs the base 200ms in. */
  transition: opacity 140ms var(--ease-out),
              transform 140ms var(--ease-out),
              visibility 0s linear 140ms;
}

.chat-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border-subtle);
  background: var(--bg-sunken);
}
.chat-head-mark { flex-shrink: 0; }
.chat-head-title { font-family: var(--font-display); font-weight: 700; font-size: 14px; color: var(--fg); }
.chat-head-sub { font-size: 11.5px; color: var(--fg-3); }
.chat-close {
  margin-left: auto;
  border: none;
  background: none;
  color: var(--fg-3);
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
  padding: 2px 6px;
}
.chat-close:hover { color: var(--fg); }

.chat-body { display: flex; flex-direction: column; padding: 14px; gap: 10px; }

.chat-intro { font-size: 13.5px; line-height: 1.5; color: var(--fg-2); margin: 0 0 10px; }
.chat-error {
  font-size: 13px;
  color: var(--danger);
  background: var(--danger-soft);
  border: 1px solid var(--danger-border);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  margin: 0 0 10px;
}

.chat-fields { display: flex; flex-direction: column; gap: 8px; margin-bottom: 10px; }

.chat-input {
  width: 100%;
  font-family: var(--font-body);
  font-size: 16px;
  color: var(--fg);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 9px 11px;
  outline: none;
  transition: border-color var(--dur-fast) var(--ease-standard), box-shadow var(--dur-fast) var(--ease-standard);
}
.chat-input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--focus); }
.chat-textarea { resize: none; }

.chat-send {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 13.5px;
  color: #fff;
  background: var(--accent-solid);
  border: none;
  border-radius: var(--radius-sm);
  padding: 9px 16px;
  cursor: pointer;
  transition: background var(--dur-base) var(--ease-standard),
              transform var(--dur-fast) var(--ease-out);
}
.chat-send:hover { background: var(--accent-hover); }
.chat-send:active { background: var(--accent-press); transform: scale(0.97); }
.chat-send:focus-visible { box-shadow: 0 0 0 3px var(--focus); }

.chat-messages {
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: min(320px, 40dvh);
  overflow-y: auto;
  padding-right: 2px;
  /* The controller owns bottom-pinning; browser scroll anchoring picking its own
     anchor mid-stream nudges the log away from the bottom. */
  overflow-anchor: none;
}

.chat-message {
  max-width: 85%;
  font-size: 14px;
  line-height: 1.45;
  padding: 8px 12px;
  border-radius: 12px;
  /* Below --dur-base by design: bubbles append often, keep the entrance quick. */
  transition: opacity 160ms var(--ease-out), transform 160ms var(--ease-out);
}
@starting-style { .chat-message { opacity: 0; transform: translateY(6px); } }
.chat-message div p { margin: 0 0 6px; }
.chat-message div p:last-child { margin: 0; }

.chat-message--visitor {
  align-self: flex-end;
  background: var(--accent-solid);
  color: #fff;
  border-bottom-right-radius: 4px;
}

.chat-message--staff {
  align-self: flex-start;
  background: var(--bg-sunken);
  color: var(--fg);
  border: 1px solid var(--border-subtle);
  border-bottom-left-radius: 4px;
}

.chat-composer { display: flex; gap: 8px; align-items: flex-end; margin-top: 4px; }
.chat-composer .chat-textarea { flex: 1; }

.chat-end-form { margin-top: 2px; text-align: center; }
.chat-end {
  border: none;
  background: none;
  font-family: var(--font-body);
  font-size: 12px;
  color: var(--fg-3);
  cursor: pointer;
  padding: 4px 8px;
  text-decoration: underline;
  text-underline-offset: 2px;
}
.chat-end:hover { color: var(--danger); }

.chat-ended {
  font-size: 13px;
  color: var(--fg-2);
  background: var(--bg-sunken);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  margin: 0 0 4px;
  text-align: center;
}
.chat-ended p { margin: 0; }

.chat-ended, .chat-error {
  transition: opacity var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out);
}
@starting-style { .chat-ended, .chat-error { opacity: 0; transform: translateY(-4px); } }

@media (prefers-reduced-motion: reduce) {
  .chat-launcher:hover { transform: none; }
  .chat-panel, .chat-panel[hidden] { transform: none; }
  .chat-panel {
    transition: opacity var(--dur-fast) var(--ease-out), visibility 0s linear 0s;
  }
  .chat-panel[hidden] {
    /* Reduced motion: opacity-only cross-fade, exit still faster than entry. */
    transition: opacity 120ms var(--ease-out), visibility 0s linear 120ms;
  }

  .chat-unread, .chat-message, .chat-ended, .chat-error {
    transition: opacity var(--dur-fast) var(--ease-out);
    transform: none;
  }
  @starting-style {
    .chat-unread, .chat-message, .chat-ended, .chat-error { transform: none; }
  }
  .chat-unread::after { animation: none; }
}