/* ChatWidget — floating chat bubble + expandable panel */

/* ── Bubble ───────────────────────────────────────────────── */

.bubble {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-accent);
  color: #0f0f14;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  box-shadow: 0 4px 16px var(--color-shadow-heavy);
  transition: transform 0.15s, background 0.15s;
  z-index: 1000;
}

.bubble:hover {
  background: var(--color-accent-hover);
  transform: scale(1.08);
}

/* ── Panel ────────────────────────────────────────────────── */

.panel {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  width: 400px;
  max-height: 60vh;
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  display: flex;
  flex-direction: column;
  box-shadow: 0 8px 32px var(--color-shadow-heavy);
  z-index: 1001;
  animation: slideUp 0.2s ease-out;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ── Header ───────────────────────────────────────────────── */

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.headerTitle {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.headerLabel {
  font-size: 0.6875rem;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 500;
}

.closeBtn {
  background: none;
  border: none;
  color: var(--color-text-secondary);
  font-size: 1.25rem;
  cursor: pointer;
  padding: 0.25rem;
  line-height: 1;
  border-radius: 4px;
  transition: color 0.15s, background 0.15s;
  flex-shrink: 0;
}

.closeBtn:hover {
  color: var(--color-text-primary);
  background: var(--color-bg-surface-hover);
}

/* ── Messages area ────────────────────────────────────────── */

.messages {
  flex: 1;
  overflow-y: auto;
  padding: 0.75rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  min-height: 0;
}

.userMsg {
  align-self: flex-end;
  background: var(--color-accent);
  color: #0f0f14;
  padding: 0.5rem 0.75rem;
  border-radius: 12px 12px 4px 12px;
  font-size: 0.875rem;
  max-width: 85%;
  word-break: break-word;
  font-weight: 500;
}

.assistantMsg {
  align-self: flex-start;
  background: var(--color-bg-page);
  border: 1px solid var(--color-border);
  padding: 0.625rem 0.75rem;
  border-radius: 12px 12px 12px 4px;
  font-size: 0.875rem;
  color: var(--color-text-primary);
  max-width: 90%;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
}

/* ── Cursor ───────────────────────────────────────────────── */

.cursor {
  display: inline-block;
  width: 2px;
  height: 1em;
  background: var(--color-accent);
  margin-left: 2px;
  vertical-align: text-bottom;
  animation: blink 0.8s step-end infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

/* ── Typing indicator ─────────────────────────────────────── */

.typing {
  display: flex;
  gap: 4px;
  align-items: center;
  padding: 0.5rem 0.75rem;
  align-self: flex-start;
}

.typingDot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-text-secondary);
  animation: bounce 1.2s infinite;
}

.typingDot:nth-child(2) {
  animation-delay: 0.15s;
}

.typingDot:nth-child(3) {
  animation-delay: 0.3s;
}

@keyframes bounce {
  0%, 60%, 100% { transform: translateY(0); }
  30% { transform: translateY(-4px); }
}

/* ── Sources ──────────────────────────────────────────────── */

.sources {
  margin-top: 0.5rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--color-border);
}

.sourcesLabel {
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin: 0 0 0.375rem;
}

.sourceList {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.sourceItem {
  display: flex;
  gap: 0.375rem;
  align-items: baseline;
  font-size: 0.75rem;
}

.sourceNum {
  flex-shrink: 0;
  width: 1.125rem;
  height: 1.125rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent);
  color: #0f0f14;
  border-radius: 3px;
  font-size: 0.625rem;
  font-weight: 700;
}

.sourceLink {
  color: var(--color-accent);
  text-decoration: none;
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.sourceLink:hover {
  text-decoration: underline;
}

/* ── Citation superscripts ────────────────────────────────── */

.citationGroup {
  font-size: 0.7em;
  vertical-align: super;
  line-height: 0;
}

.citationLink {
  color: var(--color-accent);
  text-decoration: none;
  font-weight: 600;
  cursor: pointer;
}

.citationLink:hover {
  text-decoration: underline;
}

/* ── Error ────────────────────────────────────────────────── */

.errorMsg {
  background: rgba(239, 68, 68, 0.1);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.2);
  border-radius: 8px;
  padding: 0.5rem 0.625rem;
  font-size: 0.8125rem;
  align-self: flex-start;
}

/* ── Suggestions ──────────────────────────────────────────── */

.suggestions {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 0.5rem 0;
}

.suggestionsLabel {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  margin: 0;
}

.suggestionBtn {
  background: var(--color-bg-page);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 0.5rem 0.625rem;
  color: var(--color-text-primary);
  font-size: 0.8125rem;
  cursor: pointer;
  text-align: left;
  transition: border-color 0.15s, background 0.15s;
}

.suggestionBtn:hover {
  border-color: var(--color-accent);
  background: var(--color-bg-surface-hover);
}

/* ── Input row ────────────────────────────────────────────── */

.inputRow {
  display: flex;
  gap: 0.375rem;
  padding: 0.625rem 0.75rem;
  border-top: 1px solid var(--color-border);
  flex-shrink: 0;
}

.input {
  flex: 1;
  padding: 0.5rem 0.625rem;
  background: var(--color-bg-input);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  color: var(--color-text-primary);
  font-size: 0.8125rem;
  transition: border-color 0.15s;
}

.input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 2px var(--color-accent-focus);
}

.input::placeholder {
  color: var(--color-text-secondary);
  opacity: 0.7;
}

.sendBtn {
  padding: 0.5rem 0.75rem;
  background: var(--color-accent);
  color: #0f0f14;
  border: none;
  border-radius: 8px;
  font-size: 0.8125rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
  white-space: nowrap;
}

.sendBtn:hover:not(:disabled) {
  background: var(--color-accent-hover);
}

.sendBtn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ── Responsive (mobile) ──────────────────────────────────── */

@media (max-width: 640px) {
  .bubble {
    bottom: 1rem;
    right: 1rem;
    width: 48px;
    height: 48px;
    font-size: 1.25rem;
  }

  .panel {
    bottom: 0;
    right: 0;
    left: 0;
    width: 100%;
    max-height: 75vh;
    border-radius: 16px 16px 0 0;
    border-bottom: none;
  }
}
