/* ============================================================
   Bokkuu Passenger Information Assistant — chat UI
   Uses the public brand tokens from styles.css
   ============================================================ */

.assistant-shell {
  display: grid;
  gap: 18px;
  margin-top: 28px;
  max-width: 880px;
}

.assistant-banner {
  display: grid;
  gap: 4px;
  padding: 14px 18px;
  border-radius: var(--radius-md);
  background: var(--color-primary-soft);
  border: 1px solid color-mix(in srgb, var(--color-primary) 35%, transparent);
  color: var(--color-ink);
}
.assistant-banner strong { color: var(--color-primary); font-family: var(--font-display); }
.assistant-banner p { margin: 0; color: var(--color-ink-soft); font-size: 0.95rem; }

.assistant-controls {
  display: grid;
  gap: 6px;
  align-items: start;
}
.assistant-controls label {
  font-weight: 600;
  color: var(--color-ink);
  font-size: 0.92rem;
}
.assistant-controls select {
  width: 100%;
  max-width: 280px;
  padding: 10px 12px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-ink);
  font-family: inherit;
  font-size: 1rem;
}

.assistant-chat {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 280px;
  max-height: 60vh;
  overflow-y: auto;
  padding: 16px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-surface-2);
  scroll-behavior: smooth;
}
.assistant-chat__msg {
  max-width: 88%;
  padding: 12px 14px;
  border-radius: var(--radius-md);
  font-size: 0.98rem;
  line-height: 1.55;
  white-space: pre-wrap;
  word-wrap: break-word;
}
.assistant-chat__msg--user {
  align-self: flex-end;
  background: var(--color-primary);
  color: #fff;
  border-bottom-right-radius: 4px;
}
.assistant-chat__msg--assistant {
  align-self: flex-start;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-bottom-left-radius: 4px;
}
.assistant-chat__msg--refusal {
  background: var(--color-accent-soft);
  border-color: color-mix(in srgb, var(--color-accent) 35%, transparent);
}
.assistant-chat__msg--fallback {
  background: var(--color-surface-2);
  border-color: var(--color-border);
}

.assistant-typing {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 14px;
  color: var(--color-muted);
}
.assistant-typing__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-muted);
  opacity: 0.5;
  animation: assistantDot 1.2s infinite;
}
.assistant-typing__dot:nth-child(2) { animation-delay: 0.2s; }
.assistant-typing__dot:nth-child(3) { animation-delay: 0.4s; }
@keyframes assistantDot {
  0%, 80%, 100% { opacity: 0.4; transform: translateY(0); }
  40% { opacity: 1; transform: translateY(-3px); }
}

.assistant-form {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px 10px;
  align-items: start;
}
.assistant-form input {
  width: 100%;
  padding: 12px 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-ink);
  font-family: inherit;
  font-size: 1rem;
  line-height: 1.4;
}
.assistant-form input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-soft);
}
.assistant-form .form__hint {
  grid-column: 1 / -1;
}
.assistant-form .btn { white-space: nowrap; }

.assistant-suggested {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 18px 20px;
}
.assistant-suggested h2 {
  font-family: var(--font-display);
  font-size: 1rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin: 0 0 12px;
}
.assistant-suggested ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.assistant-suggested__btn {
  width: 100%;
  text-align: left;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 10px 12px;
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--color-ink);
  cursor: pointer;
  transition: background 120ms ease, color 120ms ease, border-color 120ms ease;
}
.assistant-suggested__btn:hover,
.assistant-suggested__btn:focus-visible {
  background: var(--color-primary-soft);
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.assistant-error {
  padding: 12px 14px;
  border-radius: var(--radius-md);
  background: #fde6e3;
  border: 1px solid #c8362a;
  color: #7a1410;
  font-size: 0.92rem;
}