/* chat.css — corpus-chat widget, Singer-elegant.
 *
 * Composes from style.css primitives. Lime livery used surgically as the
 * launcher accent + LED for citation tags. Inter throughout, JetBrains
 * Mono for cite IDs only.
 */

.chat-widget {
  position: fixed;
  bottom: 16px;
  right: 16px;
  z-index: 9999;
  font-family: var(--font-sans, 'Inter', sans-serif);
  font-size: 13px;
  line-height: 1.5;
  color: var(--ink-body, #2A2B28);
}

/* ── Launcher: ghost button on white, lime LED prefix ────────────── */
.chat-widget-launcher {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-instrument, #0E0E0C);
  color: #FFF;
  border: 1px solid var(--bg-instrument, #0E0E0C);
  border-radius: 0;
  padding: 9px 16px;
  font-family: var(--font-sans, 'Inter', sans-serif);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 100ms linear, border-color 100ms linear;
}
.chat-widget-launcher::before {
  content: "";
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--livery-lime, #96C121);
  box-shadow: 0 0 4px var(--livery-lime, #96C121), 0 0 8px rgba(150,193,33,0.3);
  flex-shrink: 0;
}
.chat-widget-launcher:hover {
  background: var(--ink-primary, #0E0E0C);
  border-color: var(--livery-lime, #96C121);
}
.chat-widget-launcher:focus-visible {
  outline: 2px solid var(--livery-lime, #96C121);
  outline-offset: 2px;
}

/* ── Panel: white card on the right ──────────────────────────────── */
.chat-widget-panel {
  position: fixed;
  bottom: 16px;
  right: 16px;
  width: 380px;
  height: 520px;
  max-height: calc(100vh - 32px);
  background: var(--bg-panel, #FFFFFF);
  border: 1px solid var(--rule, #E4E5E0);
  border-radius: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.chat-widget-panel[hidden] { display: none; }
.chat-widget-panel-open {
  animation: chat-widget-slideup 100ms linear;
}
@keyframes chat-widget-slideup {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Header ─────────────────────────────────────────────────────── */
.chat-widget-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--bg-instrument, #0E0E0C);
  color: #FFF;
  border-bottom: 1px solid var(--livery-lime, #96C121);
}
.chat-widget-title {
  font-family: var(--font-sans, 'Inter', sans-serif);
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: #FFF;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.chat-widget-title::before {
  content: "";
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--livery-lime, #96C121);
  box-shadow: 0 0 4px var(--livery-lime, #96C121), 0 0 8px rgba(150,193,33,0.3);
}
.chat-widget-close {
  background: transparent;
  border: 1px solid transparent;
  color: rgba(255,255,255,0.65);
  font-family: var(--font-mono, monospace);
  font-size: 16px;
  line-height: 1;
  cursor: pointer;
  padding: 2px 6px;
  border-radius: 0;
  transition: color 100ms linear, border-color 100ms linear;
}
.chat-widget-close:hover {
  color: #FFF;
  border-color: rgba(255,255,255,0.4);
}

/* ── History ────────────────────────────────────────────────────── */
.chat-widget-history {
  flex: 1 1 auto;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  background: var(--bg-page, #F6F7F4);
}
.chat-widget-empty {
  margin: 8px 0;
  color: var(--ink-mute, #6A6D70);
  font-family: var(--font-sans, sans-serif);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 500;
}

.chat-widget-msg {
  display: flex;
  flex-direction: column;
  max-width: 85%;
  gap: 5px;
}
.chat-widget-msg-user {
  align-self: flex-end;
  align-items: flex-end;
}
.chat-widget-msg-ai {
  align-self: flex-start;
  align-items: flex-start;
}

.chat-widget-marker {
  font-family: var(--font-sans, sans-serif);
  font-size: 9px;
  font-weight: 500;
  color: var(--ink-mute, #6A6D70);
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.chat-widget-bubble {
  background: var(--bg-panel, #FFFFFF);
  border: 1px solid var(--rule, #E4E5E0);
  border-radius: 0;
  padding: 10px 14px;
  white-space: pre-wrap;
  word-wrap: break-word;
  font-size: 13px;
  line-height: 1.55;
  color: var(--ink-body, #2A2B28);
}
.chat-widget-msg-user .chat-widget-bubble {
  background: var(--bg-instrument, #0E0E0C);
  color: #FFF;
  border-color: var(--bg-instrument, #0E0E0C);
}

.chat-widget-cites {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 4px;
}
.chat-widget-cite {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono, monospace);
  font-size: 10px;
  font-weight: 500;
  background: transparent;
  color: var(--ink-primary, #0E0E0C);
  padding: 0;
  border: none;
  border-radius: 0;
  letter-spacing: 0;
}
.chat-widget-cite::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--livery-lime, #96C121);
}

.chat-widget-warning {
  font-family: var(--font-mono, monospace);
  font-size: 11px;
  color: var(--livery-red, #C64C38);
  background: var(--bg-panel, #FFFFFF);
  border: 1px solid var(--rule, #E4E5E0);
  border-left: 2px solid var(--livery-red, #C64C38);
  border-radius: 0;
  padding: 6px 10px;
  margin-top: 4px;
  letter-spacing: 0;
}

/* ── Input ──────────────────────────────────────────────────────── */
.chat-widget-form {
  display: flex;
  gap: 8px;
  padding: 12px 14px 6px;
  background: var(--bg-panel, #FFFFFF);
  border-top: 1px solid var(--rule, #E4E5E0);
}
.chat-widget-input {
  flex: 1 1 auto;
  border: 1px solid var(--rule, #E4E5E0);
  border-radius: 0;
  padding: 9px 12px;
  font-family: var(--font-sans, sans-serif);
  font-size: 13px;
  background: var(--bg-panel, #FFFFFF);
  color: var(--ink-primary, #0E0E0C);
  transition: border-color 100ms linear;
}
.chat-widget-input:focus {
  outline: none;
  border-color: var(--livery-lime, #96C121);
}
.chat-widget-input:disabled {
  background: var(--bg-page, #F6F7F4);
  color: var(--ink-mute, #6A6D70);
  cursor: not-allowed;
}

.chat-widget-send {
  background: var(--bg-instrument, #0E0E0C);
  color: #FFF;
  border: 1px solid var(--bg-instrument, #0E0E0C);
  border-radius: 0;
  padding: 8px 14px;
  font-family: var(--font-sans, sans-serif);
  font-weight: 500;
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 100ms linear, border-color 100ms linear;
}
.chat-widget-send:hover:not(:disabled) {
  background: var(--ink-primary, #0E0E0C);
  border-color: var(--livery-lime, #96C121);
}
.chat-widget-send:disabled {
  opacity: 0.5;
  cursor: progress;
}

.chat-widget-footnote {
  font-family: var(--font-sans, sans-serif);
  font-size: 9px;
  color: var(--ink-mute, #6A6D70);
  text-transform: uppercase;
  letter-spacing: 0.22em;
  padding: 0 14px 10px;
  background: var(--bg-panel, #FFFFFF);
  text-align: center;
}

/* ── Error strip ────────────────────────────────────────────────── */
.chat-widget-error {
  padding: 10px 14px;
  background: var(--bg-panel, #FFFFFF);
  color: var(--livery-red, #C64C38);
  font-family: var(--font-mono, monospace);
  font-size: 11px;
  letter-spacing: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  border-top: 2px solid var(--livery-red, #C64C38);
}
.chat-widget-error[hidden] { display: none; }
.chat-widget-retry {
  background: var(--livery-red, #C64C38);
  color: #FFF;
  border: 1px solid var(--livery-red, #C64C38);
  border-radius: 0;
  padding: 5px 12px;
  font-family: var(--font-sans, sans-serif);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  cursor: pointer;
}
.chat-widget-retry:hover { background: #A8402F; border-color: #A8402F; }

/* ── Citation hyperlinks ────────────────────────────────────────── */
.chat-widget-cites-label {
  font-family: var(--font-sans, sans-serif);
  font-size: 9px;
  font-weight: 500;
  color: var(--ink-mute, #6A6D70);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  margin-right: 4px;
}
.chat-citation {
  font-family: var(--font-mono, monospace);
  font-size: 11px;
  color: var(--ink-primary, #0E0E0C);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 100ms linear;
}
.chat-citation:hover,
.chat-citation:focus-visible {
  border-bottom-color: var(--livery-lime, #96C121);
  outline: none;
}
.chat-citation + .chat-citation::before {
  content: ", ";
  color: var(--ink-mute, #6A6D70);
  border-bottom: none;
}

/* ── Mobile ─────────────────────────────────────────────────────── */
@media (max-width: 600px) {
  .chat-widget-panel {
    width: calc(100vw - 16px);
    right: 8px;
    left: 8px;
    bottom: 8px;
    height: 75vh;
  }
  .chat-widget-launcher { bottom: 12px; right: 12px; }
}