/*
 * preview-chat.css
 * ─────────────────────────────────────────────────────────────────────
 * Public-site preview chat pane. Same visual shape as the gen2 chat
 * surface in app.html (header → messages → input row), wrapped in a
 * right-side slide-in drawer so any marketing page can drop a card-
 * click → chat-with-persona flow.
 *
 * Pair with /assets/js/preview-chat.js. Expects the design tokens
 * defined in /assets/css/app.css to be loaded first.
 */

/* ── Drawer shell (slide-in from right) ───────────────────────────── */
.pchat-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(28, 24, 20, 0.42);
  z-index: 90;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-3) var(--ease-out);
}
.pchat-backdrop.is-open { opacity: 1; pointer-events: auto; }

.pchat-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 520px;
  max-width: 100vw;
  background: var(--cream);
  border-left: 1px solid var(--rule);
  box-shadow: -20px 0 60px -20px rgba(28, 24, 20, 0.15);
  z-index: 100;
  transform: translateX(100%);
  transition: transform var(--dur-4) var(--ease-out-expo);
  display: flex;
  flex-direction: column;
}
.pchat-drawer.is-open { transform: translateX(0); }

/* ── Standard chat pane (mirrors app.html .chat-* classes) ────────── */
.pchat-header {
  padding: var(--sp-4) var(--sp-5);
  border-bottom: 1px solid var(--rule);
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  flex-shrink: 0;
  background: var(--cream);
}
.pchat-persona-badge {
  width: 36px;
  height: 36px;
  border-radius: var(--rad-md);
  overflow: hidden;
  background: var(--paper-3, var(--wash-1));
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.pchat-persona-badge img { width: 100%; height: 100%; object-fit: cover; }
.pchat-header-text { min-width: 0; flex: 1; line-height: 1.2; }
.pchat-persona-name {
  font-family: var(--font-display);
  font-size: var(--fs-2);
  font-weight: 500;
  letter-spacing: var(--tracking-snug);
  color: var(--ink);
}
.pchat-persona-status {
  font-size: var(--fs-0);
  color: var(--ink-mute);
  display: flex;
  align-items: center;
  gap: 6px;
  line-height: 1.35;
}
.pchat-persona-status::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--success);
  border-radius: 50%;
  flex-shrink: 0;
}
.pchat-close {
  appearance: none;
  background: transparent;
  border: 0;
  cursor: pointer;
  color: var(--ink-mute);
  padding: 8px;
  font-size: 22px;
  line-height: 1;
  border-radius: var(--rad-sm);
  flex-shrink: 0;
}
.pchat-close:hover { color: var(--ink); background: var(--wash-1); }

/* Voice / Text mode pill (mirrors .mode-toggle in app.html so the
   visual pattern is consistent with the authenticated app). */
.pchat-mode {
  display: inline-flex;
  align-items: center;
  gap: 0;
  padding: 2px;
  background: var(--paper-2, var(--wash-1));
  border: 1px solid var(--rule);
  border-radius: var(--rad-full);
  flex-shrink: 0;
}
.pchat-mode__btn {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--ink-mute);
  font-family: var(--font-sans);
  font-size: 11px;
  line-height: 1;
  padding: 3px 7px;
  border-radius: var(--rad-full);
  cursor: pointer;
  transition: background var(--dur-2) var(--ease-out),
              color      var(--dur-2) var(--ease-out);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.pchat-mode__btn:hover { color: var(--ink-soft); }
.pchat-mode__btn.is-active {
  background: var(--ink);
  color: var(--paper, var(--cream));
}
.pchat-mode__btn svg {
  width: 13px; height: 13px; display: block;
  fill: none; stroke: currentColor; stroke-width: 2;
  stroke-linecap: round; stroke-linejoin: round;
}

.pchat-messages {
  flex: 1;
  overflow-y: auto;
  padding: var(--sp-6) var(--sp-5);
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
}
.pchat-messages::-webkit-scrollbar { width: 6px; }
.pchat-messages::-webkit-scrollbar-thumb { background: var(--rule-strong); border-radius: 3px; }

.pchat-message {
  max-width: 68%;
  animation: pchatMessageIn 260ms var(--ease-out);
}
@keyframes pchatMessageIn { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }
.pchat-message.user { align-self: flex-end; }
.pchat-message.assistant { align-self: flex-start; max-width: 92%; }
.pchat-message.error { align-self: center; max-width: 90%; }

.pchat-bubble {
  padding: 12px 16px;
  border-radius: var(--rad-lg);
  line-height: 1.55;
  font-size: var(--fs-1);
  white-space: pre-wrap;
  word-break: break-word;
}
.pchat-message.user .pchat-bubble {
  background: var(--ink);
  color: var(--ink-invert);
  border-bottom-right-radius: 6px;
}
.pchat-message.assistant .pchat-bubble {
  background: transparent;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: var(--fs-2);
  line-height: 1.6;
  border: none;
  padding: 4px 0;
}
.pchat-message.error .pchat-bubble {
  background: transparent;
  color: var(--danger);
  font-size: var(--fs-0);
  text-align: center;
}

.pchat-typing {
  display: flex;
  gap: 5px;
  padding: 8px 0;
  width: fit-content;
  align-self: flex-start;
}
.pchat-typing-dot {
  width: 6px;
  height: 6px;
  background: var(--ink-faint);
  border-radius: 50%;
  animation: pchatTypingBounce 1.1s var(--ease-in-out) infinite;
}
.pchat-typing-dot:nth-child(2) { animation-delay: 150ms; }
.pchat-typing-dot:nth-child(3) { animation-delay: 300ms; }
@keyframes pchatTypingBounce {
  0%, 60%, 100% { opacity: 0.35; transform: translateY(0); }
  30% { opacity: 1; transform: translateY(-3px); }
}

.pchat-empty {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  padding: var(--sp-5) 0;
  gap: var(--sp-3);
}
.pchat-empty h3 {
  font-family: var(--font-display);
  font-size: var(--fs-4);
  font-weight: 500;
  letter-spacing: var(--tracking-snug);
  color: var(--ink);
  margin: 0;
}
.pchat-empty p {
  font-family: var(--font-display);
  font-size: var(--fs-2);
  color: var(--ink-soft);
  line-height: var(--lh-body);
  max-width: 44ch;
  margin: 0;
}

.pchat-input-area {
  padding: var(--sp-4) var(--sp-5) var(--sp-5);
  border-top: 1px solid var(--rule);
  background: var(--cream);
  flex-shrink: 0;
  margin: 0;
}
.pchat-input-row {
  display: flex;
  gap: var(--sp-2);
  align-items: flex-end;
  background: var(--paper);
  border: 1px solid var(--rule-strong);
  border-radius: var(--rad-xl);
  padding: 6px 6px 6px 12px;
  transition: border-color var(--dur-2) var(--ease-out), background var(--dur-2) var(--ease-out);
}
.pchat-input-row:focus-within {
  border-color: var(--ink-mute);
  background: var(--cream);
}
.pchat-textarea {
  flex: 1;
  border: none;
  background: transparent;
  resize: none;
  font-family: var(--font-sans);
  font-size: var(--fs-1);
  line-height: var(--lh-snug);
  color: var(--ink);
  outline: none;
  max-height: 144px;
  min-height: 28px;
  padding: 8px 0;
}
.pchat-textarea::placeholder { color: var(--ink-faint); }
.pchat-send,
.pchat-mic {
  width: 34px;
  height: 34px;
  border-radius: var(--rad-md);
  border: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
  transition: background var(--dur-2) var(--ease-out),
              color      var(--dur-2) var(--ease-out),
              opacity    var(--dur-2) var(--ease-out);
}
.pchat-send {
  background: var(--ink);
  color: var(--ink-invert);
}
.pchat-send:hover:not(:disabled) { background: oklch(0.14 0.02 75); }
.pchat-send:disabled { background: var(--paper-3, var(--wash-1)); color: var(--ink-faint); cursor: not-allowed; }
.pchat-send svg { width: 16px; height: 16px; fill: currentColor; }

.pchat-mic {
  background: transparent;
  color: var(--ink-soft);
}
.pchat-mic:hover:not(.recording) { background: var(--wash-1); color: var(--ink); }
.pchat-mic svg { width: 18px; height: 18px; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.pchat-mic.recording {
  background: var(--danger-soft, oklch(0.94 0.04 27));
  color: var(--danger, oklch(0.55 0.17 27));
  animation: pchatMicPulse 1.3s var(--ease-in-out) infinite;
}
@keyframes pchatMicPulse {
  0%, 100% { box-shadow: 0 0 0 0 oklch(0.55 0.17 27 / 0.20); }
  50%      { box-shadow: 0 0 0 6px oklch(0.55 0.17 27 / 0); }
}
.pchat-mic[hidden] { display: none; }
@media (prefers-reduced-motion: reduce) {
  .pchat-mic.recording { animation: none; }
}

.pchat-cta {
  padding: var(--sp-4) var(--sp-5) var(--sp-5);
  border-top: 1px solid var(--rule);
  background: var(--paper);
  text-align: center;
}
.pchat-cta p {
  font-family: var(--font-display);
  color: var(--ink-soft);
  font-size: var(--fs-1);
  line-height: var(--lh-body);
  margin: 0 0 var(--sp-3);
}

@media (prefers-reduced-motion: reduce) {
  .pchat-drawer, .pchat-backdrop { transition: none; }
  .pchat-message { animation: none; }
}