/* Chat widget — floating button + panel */

.chat-widget {
  --bubble-user: var(--ink);
  --bubble-user-ink: var(--paper);
  --bubble-bot: var(--cream-deep);
  --bubble-bot-ink: var(--ink);
  --panel-bg: var(--paper);
  --panel-border: rgba(42, 38, 34, .08);
  position: fixed;
  inset-inline-start: 1.25rem;
  bottom: 1.25rem;
  z-index: 100;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Assistant', 'Rubik', 'Helvetica Neue', Arial, sans-serif;
}

.chat-toggle {
  position: relative;
  min-height: 64px;
  padding: 0.9rem 1.6rem;
  border: 0; border-radius: 999px;
  background: var(--ink);
  color: var(--paper);
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(30, 24, 16, .28);
  display: inline-flex; align-items: center; gap: 0.7rem;
  font-family: var(--serif, 'David Libre', serif);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1;
  transition: background var(--dur) var(--ease), transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), padding var(--dur) var(--ease);
  animation: chat-bounce 3.2s cubic-bezier(.5, .05, .3, 1) infinite;
}
.chat-toggle::after {
  content: '';
  position: absolute; inset: 0;
  border-radius: inherit;
  box-shadow: 0 0 0 0 rgba(192, 137, 112, .55);
  animation: chat-pulse 2.6s var(--ease) infinite;
  pointer-events: none;
}
.chat-widget.is-open .chat-toggle::after,
.chat-toggle:hover::after { animation: none; box-shadow: none; }
.chat-widget.is-open .chat-toggle,
.chat-toggle:hover,
.chat-toggle:focus-visible { animation: none; }

@keyframes chat-pulse {
  0%   { box-shadow: 0 0 0 0 rgba(192, 137, 112, .55); }
  70%  { box-shadow: 0 0 0 14px rgba(192, 137, 112, 0); }
  100% { box-shadow: 0 0 0 0 rgba(192, 137, 112, 0); }
}
@keyframes chat-bounce {
  0%, 65%, 100% { transform: translateY(0); }
  75%          { transform: translateY(-6px); }
  85%          { transform: translateY(-1px); }
  92%          { transform: translateY(-3px); }
}
@media (prefers-reduced-motion: reduce) {
  .chat-toggle,
  .chat-toggle::after { animation: none; }
}
.chat-toggle:hover { background: var(--warm-deep); transform: translateY(-2px); box-shadow: 0 12px 32px rgba(30, 24, 16, .32); }
.chat-toggle:active { transform: translateY(0); }
.chat-toggle:focus-visible { outline: 2px solid var(--warm); outline-offset: 3px; }

.chat-toggle-icon {
  width: 26px; height: 26px;
  flex-shrink: 0;
  transition: transform var(--dur) var(--ease);
}
.chat-toggle-icon--close { display: none; }
.chat-widget.is-open .chat-toggle-icon--open { display: none; }
.chat-widget.is-open .chat-toggle-icon--close { display: block; }
.chat-widget.is-open .chat-toggle { padding: 0.9rem 1.3rem; }
.chat-widget.is-open .chat-toggle-label { display: none; }

.chat-toggle-label { white-space: nowrap; }

.chat-panel {
  position: absolute;
  bottom: calc(100% + 0.75rem);
  inset-inline-start: 0;
  width: min(380px, calc(100vw - 2.5rem));
  height: min(560px, calc(100vh - 7rem));
  background: var(--panel-bg);
  border-radius: 16px;
  box-shadow: 0 20px 60px rgba(30, 24, 16, .2), 0 2px 8px rgba(30, 24, 16, .08);
  border: 1px solid var(--panel-border);
  display: flex; flex-direction: column;
  overflow: hidden;
  opacity: 0; visibility: hidden;
  transform: translateY(8px) scale(.98);
  transform-origin: bottom var(--origin, right);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease), visibility var(--dur) var(--ease);
}
.chat-widget.is-open .chat-panel {
  opacity: 1; visibility: visible;
  transform: translateY(0) scale(1);
}

.chat-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.9rem 1rem;
  border-bottom: 1px solid var(--panel-border);
  background: var(--cream-deep);
}
.chat-header h2 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--ink);
}
.chat-close {
  width: 32px; height: 32px;
  border: 0; background: transparent;
  color: var(--ink-soft);
  cursor: pointer;
  border-radius: 50%;
  display: grid; place-items: center;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}
.chat-close:hover { background: rgba(42, 38, 34, .08); color: var(--ink); }
.chat-close svg { width: 18px; height: 18px; }

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 1rem;
  display: flex; flex-direction: column; gap: 0.55rem;
  scroll-behavior: smooth;
}
@media (prefers-reduced-motion: reduce) { .chat-messages { scroll-behavior: auto; } }

.chat-message {
  max-width: 85%;
  padding: 0.6em 0.9em;
  border-radius: 14px;
  font-size: 0.95rem;
  line-height: 1.55;
  word-wrap: break-word;
  white-space: pre-wrap;
}
.chat-message p { margin: 0; }
.chat-message p + p { margin-top: 0.5em; }

.chat-message--bot {
  align-self: flex-end;
  background: var(--bubble-bot);
  color: var(--bubble-bot-ink);
  border-bottom-left-radius: 4px;
}
.chat-message--user {
  align-self: flex-start;
  background: var(--bubble-user);
  color: var(--bubble-user-ink);
  border-bottom-right-radius: 4px;
}
.chat-message--error {
  align-self: center;
  background: transparent;
  color: var(--warm-deep);
  font-size: 0.85rem;
  text-align: center;
  max-width: 100%;
}

.chat-typing {
  align-self: flex-end;
  display: inline-flex;
  gap: 4px;
  padding: 0.8em 1em;
  background: var(--bubble-bot);
  border-radius: 14px;
  border-bottom-left-radius: 4px;
}
.chat-typing span {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--ink-soft);
  opacity: .3;
  animation: chat-dot 1.2s var(--ease) infinite;
}
.chat-typing span:nth-child(2) { animation-delay: .15s; }
.chat-typing span:nth-child(3) { animation-delay: .3s; }
@keyframes chat-dot {
  0%, 60%, 100% { opacity: .3; transform: translateY(0); }
  30% { opacity: 1; transform: translateY(-3px); }
}
@media (prefers-reduced-motion: reduce) {
  .chat-typing span { animation: none; opacity: .5; }
}

.chat-composer {
  display: flex;
  align-items: flex-end;
  gap: 0.5rem;
  padding: 0.75rem;
  border-top: 1px solid var(--panel-border);
  background: var(--paper);
}
.chat-composer textarea {
  flex: 1;
  min-height: 40px;
  max-height: 120px;
  padding: 0.55em 0.9em;
  border: 1px solid var(--panel-border);
  border-radius: 20px;
  font-family: inherit;
  font-size: 16px;
  line-height: 1.4;
  background: var(--cream);
  color: var(--ink);
  resize: none;
  outline: none;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.chat-composer textarea:focus {
  border-color: var(--warm);
  background: var(--paper);
}
.chat-composer textarea:disabled { opacity: .6; }

.chat-send {
  width: 44px; height: 44px;
  border: 0; border-radius: 50%;
  background: var(--ink);
  color: var(--paper);
  cursor: pointer;
  display: grid; place-items: center;
  transition: background var(--dur) var(--ease), transform var(--dur) var(--ease);
  flex-shrink: 0;
}
.chat-send:hover:not(:disabled) { background: var(--warm-deep); }
.chat-send:disabled { opacity: .4; cursor: not-allowed; }
.chat-send svg { width: 18px; height: 18px; transform: scaleX(-1); }

.chat-footer-note {
  padding: 0.4rem 1rem 0.6rem;
  font-size: 0.7rem;
  color: var(--muted);
  text-align: center;
  background: var(--paper);
  border-top: 1px solid var(--panel-border);
}

@media (max-width: 640px) {
  .chat-widget { inset-inline-start: 1rem; bottom: 1rem; }
  .chat-toggle { min-height: 56px; padding: 0.75rem 1.3rem; font-size: 1.05rem; }
  .chat-toggle-icon { width: 22px; height: 22px; }
  .chat-panel {
    position: fixed;
    inset: 0;
    width: 100vw; height: 100dvh;
    border-radius: 0;
    bottom: auto;
    inset-inline-start: auto;
    transform: translateY(100%);
  }
  .chat-widget.is-open .chat-panel { transform: translateY(0); }
}