/* Book AI Chat — Library Assistant (AIM navy / gold) */

.book-ai-root {
  --book-ai-navy: #1a2744;
  --book-ai-navy-2: #243556;
  --book-ai-gold: #c9973a;
  --book-ai-gold-soft: #e8c478;
  --book-ai-bg: #f7f5f0;
  --book-ai-panel: #ffffff;
  --book-ai-text: #1a2744;
  --book-ai-muted: #5c6b82;
  --book-ai-border: #d8deea;
  font-family: "Source Serif 4", "Libre Baskerville", Georgia, "Times New Roman", serif;
  z-index: 99999;
}

.book-ai-fab {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 100000;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  border: none;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--book-ai-navy) 0%, var(--book-ai-navy-2) 100%);
  color: #fff;
  font-family: "DM Sans", "Segoe UI", sans-serif;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 10px 28px rgba(26, 39, 68, 0.35);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.book-ai-fab:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 32px rgba(26, 39, 68, 0.42);
}

.book-ai-fab-icon {
  display: inline-flex;
  color: var(--book-ai-gold-soft);
}

.book-ai-panel {
  position: fixed;
  right: 20px;
  bottom: 78px;
  z-index: 100001;
  width: min(420px, calc(100vw - 28px));
  height: min(640px, calc(100vh - 110px));
  display: flex;
  flex-direction: column;
  background:
    radial-gradient(1200px 400px at 100% 0%, rgba(201, 151, 58, 0.12), transparent 55%),
    linear-gradient(180deg, #fff 0%, var(--book-ai-bg) 100%);
  border: 1px solid var(--book-ai-border);
  border-radius: 18px;
  box-shadow: 0 20px 48px rgba(16, 24, 40, 0.28);
  overflow: hidden;
  animation: book-ai-rise 0.22s ease;
}

.book-ai-panel[hidden] {
  display: none !important;
}

@keyframes book-ai-rise {
  from { opacity: 0; transform: translateY(12px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.book-ai-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
  padding: 14px 14px 12px;
  background: var(--book-ai-navy);
  color: #fff;
}

.book-ai-title {
  display: block;
  font-family: "DM Sans", "Segoe UI", sans-serif;
  font-size: 15px;
  letter-spacing: 0.02em;
}

.book-ai-subtitle {
  display: block;
  margin-top: 3px;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.72);
  max-width: 260px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.book-ai-header-actions {
  display: flex;
  gap: 4px;
}

.book-ai-icon-btn {
  border: none;
  background: transparent;
  color: #fff;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 16px;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none !important;
}

a.book-ai-icon-btn {
  color: #fff !important;
}

.book-ai-icon-btn:hover {
  background: rgba(255, 255, 255, 0.12);
}

.book-ai-scope {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  padding: 10px 12px 0;
}

.book-ai-scope-btn {
  border: 1px solid var(--book-ai-border);
  background: #fff;
  color: var(--book-ai-muted);
  border-radius: 999px;
  padding: 7px 10px;
  font-family: "DM Sans", "Segoe UI", sans-serif;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
}

.book-ai-scope-btn.is-active {
  background: rgba(201, 151, 58, 0.16);
  border-color: var(--book-ai-gold);
  color: var(--book-ai-navy);
}

.book-ai-scope-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.book-ai-messages {
  flex: 1;
  overflow-y: auto;
  padding: 14px 12px 8px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.book-ai-bubble {
  max-width: 92%;
  padding: 10px 12px;
  border-radius: 14px;
  font-size: 14px;
  line-height: 1.45;
  white-space: pre-wrap;
  word-break: break-word;
}

.book-ai-bubble.user {
  align-self: flex-end;
  background: var(--book-ai-navy);
  color: #fff;
  border-bottom-right-radius: 4px;
  font-family: "DM Sans", "Segoe UI", sans-serif;
}

.book-ai-bubble.assistant {
  align-self: flex-start;
  background: #fff;
  border: 1px solid var(--book-ai-border);
  color: var(--book-ai-text);
  border-bottom-left-radius: 4px;
}

.book-ai-bubble.system {
  align-self: center;
  background: transparent;
  color: var(--book-ai-muted);
  font-size: 13px;
  text-align: center;
  max-width: 100%;
}

.book-ai-citations {
  margin-top: 8px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.book-ai-cite {
  border-left: 3px solid var(--book-ai-gold);
  background: rgba(201, 151, 58, 0.08);
  padding: 6px 8px;
  border-radius: 0 8px 8px 0;
  font-size: 12px;
  color: var(--book-ai-muted);
  font-family: "DM Sans", "Segoe UI", sans-serif;
}

.book-ai-cite strong {
  color: var(--book-ai-navy);
  display: block;
  margin-bottom: 2px;
}

.book-ai-cite-excerpt {
  margin: 4px 0 8px;
  line-height: 1.4;
}

.book-ai-open-book {
  display: inline-flex;
  align-items: center;
  margin-top: 2px;
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--book-ai-navy);
  color: #fff !important;
  text-decoration: none !important;
  font-size: 12px;
  font-weight: 600;
  transition: background 0.15s ease, transform 0.15s ease;
}

.book-ai-open-book:hover {
  background: #243556;
  transform: translateY(-1px);
  color: #fff !important;
}

.book-ai-typing {
  align-self: flex-start;
  color: var(--book-ai-muted);
  font-size: 13px;
  font-family: "DM Sans", "Segoe UI", sans-serif;
}

.book-ai-voice-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px 0;
  font-family: "DM Sans", "Segoe UI", sans-serif;
}

.book-ai-voice-lang-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--book-ai-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.book-ai-voice-lang {
  border: 1px solid var(--book-ai-border);
  border-radius: 8px;
  background: #fff;
  color: var(--book-ai-navy);
  font-size: 12px;
  padding: 4px 8px;
}

.book-ai-voice-status {
  font-size: 12px;
  color: var(--book-ai-gold);
  min-height: 1em;
}

.book-ai-form {
  display: flex;
  gap: 8px;
  align-items: flex-end;
  padding: 10px 12px 12px;
  border-top: 1px solid var(--book-ai-border);
  background: rgba(255, 255, 255, 0.9);
}

.book-ai-mic {
  flex: 0 0 auto;
  width: 42px;
  height: 42px;
  border: 1px solid var(--book-ai-border);
  border-radius: 12px;
  background: #fff;
  color: var(--book-ai-navy);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s ease, color 0.15s ease, box-shadow 0.15s ease;
}

.book-ai-mic:hover {
  border-color: var(--book-ai-gold);
}

.book-ai-mic.is-listening {
  background: #c0392b;
  border-color: #c0392b;
  color: #fff;
  box-shadow: 0 0 0 4px rgba(192, 57, 43, 0.2);
  animation: book-ai-pulse 1.2s ease infinite;
}

.book-ai-mic:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

@keyframes book-ai-pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

.book-ai-input {
  flex: 1;
  resize: none;
  min-height: 42px;
  max-height: 110px;
  border: 1px solid var(--book-ai-border);
  border-radius: 12px;
  padding: 10px 12px;
  font-family: "DM Sans", "Segoe UI", sans-serif;
  font-size: 14px;
  color: var(--book-ai-text);
  background: #fff;
}

.book-ai-input:focus {
  outline: 2px solid rgba(201, 151, 58, 0.35);
  border-color: var(--book-ai-gold);
}

.book-ai-send {
  border: none;
  border-radius: 12px;
  padding: 0 16px;
  height: 42px;
  background: var(--book-ai-gold);
  color: #1a2744;
  font-family: "DM Sans", "Segoe UI", sans-serif;
  font-weight: 700;
  font-size: 13px;
  cursor: pointer;
}

.book-ai-send:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.book-ai-speak {
  margin-top: 8px;
  border: 1px solid var(--book-ai-border);
  background: #fff;
  color: var(--book-ai-navy);
  border-radius: 999px;
  padding: 5px 10px;
  font-family: "DM Sans", "Segoe UI", sans-serif;
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
}

.book-ai-speak:hover {
  border-color: var(--book-ai-gold);
}

.book-ai-feedback {
  margin-top: 10px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
}

.book-ai-feedback-label {
  font-size: 11px;
  color: var(--book-ai-muted, #5c6578);
  margin-right: 4px;
}

.book-ai-feedback-btn {
  border: 1px solid var(--book-ai-border);
  background: #fff;
  color: var(--book-ai-navy);
  border-radius: 999px;
  padding: 4px 10px;
  font-family: "DM Sans", "Segoe UI", sans-serif;
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
}

.book-ai-feedback-btn:hover {
  border-color: var(--book-ai-gold);
}

.book-ai-feedback-btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.book-ai-feedback-thanks {
  font-size: 11px;
  color: var(--book-ai-muted, #5c6578);
}

.book-ai-md {
  font-size: 14px;
  line-height: 1.55;
  color: inherit;
}

.book-ai-md p {
  margin: 0 0 0.7em;
}

.book-ai-md p:last-child {
  margin-bottom: 0;
}

.book-ai-md h3,
.book-ai-md h4 {
  margin: 0.85em 0 0.4em;
  font-size: 15px;
  font-weight: 700;
  color: var(--book-ai-navy, #1a2744);
}

.book-ai-md ul,
.book-ai-md ol {
  margin: 0.35em 0 0.75em 1.15em;
  padding: 0;
}

.book-ai-md li {
  margin: 0.25em 0;
}

.book-ai-md strong {
  font-weight: 700;
}

.book-ai-md code {
  font-size: 0.92em;
  background: rgba(26, 39, 68, 0.06);
  padding: 0.1em 0.35em;
  border-radius: 4px;
}

.book-ai-section-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--book-ai-muted, #5c6578);
  margin: 10px 0 6px;
}

.book-ai-cite.is-primary {
  border-left: 3px solid var(--book-ai-gold, #c9973a);
  padding-left: 8px;
}

.book-ai-suggest {
  margin-top: 10px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.book-ai-suggest-btn {
  text-align: left;
  border: 1px solid var(--book-ai-border, #d8dde6);
  background: #fff;
  color: var(--book-ai-navy, #1a2744);
  border-radius: 10px;
  padding: 8px 10px;
  font-family: "DM Sans", "Segoe UI", sans-serif;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  line-height: 1.35;
}

.book-ai-suggest-btn:hover {
  border-color: var(--book-ai-gold, #c9973a);
  background: #fffaf0;
}

.book-ai-locked {
  padding: 28px 20px;
  text-align: center;
  color: var(--book-ai-text);
}

.book-ai-locked p {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--book-ai-muted);
}

.book-ai-locked strong {
  color: var(--book-ai-navy);
  font-size: 16px;
}

.book-ai-locked-actions {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 16px;
}

.book-ai-btn-primary,
.book-ai-btn-secondary {
  display: inline-block;
  text-decoration: none !important;
  border-radius: 10px;
  padding: 10px 14px;
  font-family: "DM Sans", "Segoe UI", sans-serif;
  font-weight: 600;
  font-size: 14px;
}

.book-ai-btn-primary {
  background: var(--book-ai-navy);
  color: #fff !important;
}

.book-ai-btn-secondary {
  background: #fff;
  color: var(--book-ai-navy) !important;
  border: 1px solid var(--book-ai-border);
}

.book-ai-history {
  max-height: 160px;
  overflow-y: auto;
  border-bottom: 1px solid var(--book-ai-border);
  background: #fff;
  padding: 8px 10px;
}

.book-ai-history[hidden] {
  display: none !important;
}

.book-ai-history-head {
  font-family: "DM Sans", "Segoe UI", sans-serif;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--book-ai-muted);
  margin-bottom: 6px;
}

.book-ai-history-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.book-ai-history-list li button {
  width: 100%;
  text-align: left;
  border: none;
  background: transparent;
  padding: 8px 6px;
  border-radius: 8px;
  cursor: pointer;
  font-family: "DM Sans", "Segoe UI", sans-serif;
  font-size: 13px;
  color: var(--book-ai-navy);
}

.book-ai-history-list li button:hover {
  background: rgba(26, 39, 68, 0.06);
}

@media (max-width: 600px) {
  .book-ai-fab {
    right: 14px;
    bottom: 14px;
  }
  .book-ai-panel {
    right: 10px;
    left: 10px;
    width: auto;
    bottom: 72px;
    height: min(72vh, 640px);
  }
}