/**
 * @file web/src/components/playground/PlaygroundChat.module.css
 * @description Styles for the shared PlaygroundChat core. Two density variants
 *   (`full` for the modal playground, `mini` for the router + model-row
 *   playgrounds) share the same visual language so every playground looks
 *   identical — same bubbles, same metadata chips, same input bar.
 *
 * 📖 Design tokens come from the app's CSS variables (set by the theme), with
 * 📖 sensible hard-coded fallbacks so the component degrades gracefully.
 */

.root {
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 0;
  background: transparent;
}

/* ── Transcript ─────────────────────────────────────────────────────────── */
.transcript {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.root.full .transcript {
  padding: 16px;
}

.root.mini .transcript {
  padding: 8px;
  gap: 8px;
}

/* ── Empty state ────────────────────────────────────────────────────────── */
.empty {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 6px;
  color: var(--text-muted, #888);
  padding: 24px 16px;
}

.root.mini .empty {
  padding: 18px 12px;
  justify-content: flex-start;
}

.emptyIcon {
  opacity: 0.55;
  margin-bottom: 4px;
}

.emptyTitle {
  font-size: 15px;
  font-weight: 600;
  color: var(--text, #eee);
}

.root.mini .emptyTitle {
  font-size: 13px;
}

.emptyHint {
  font-size: 12px;
  line-height: 1.5;
  max-width: 420px;
  opacity: 0.8;
}

.root.mini .emptyHint {
  font-size: 11px;
  max-width: 100%;
}

.emptyHint code {
  background: var(--bg-secondary, #16161e);
  border: 1px solid var(--border, #1e1e2e);
  border-radius: 4px;
  padding: 1px 5px;
  font-family: 'Menlo', 'Monaco', monospace;
  font-size: 11px;
}

.suggestions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
  margin-top: 10px;
}

/* ── Message bubble ─────────────────────────────────────────────────────── */
.message {
  display: flex;
  flex-direction: column;
  gap: 4px;
  max-width: 88%;
  animation: msgIn 0.15s ease;
}

.root.mini .message {
  max-width: 92%;
  gap: 3px;
}

@keyframes msgIn {
  from { opacity: 0; transform: translateY(2px); }
  to   { opacity: 1; transform: translateY(0); }
}

.message.user {
  align-self: flex-end;
  align-items: flex-end;
}

.message.assistant {
  align-self: flex-start;
  align-items: flex-start;
}

.bubbleRow {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0 4px;
}

.role {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted, #888);
  font-weight: 600;
}

.copyBtn {
  display: inline-flex;
  align-items: center;
  background: transparent;
  border: none;
  color: var(--text-muted, #888);
  cursor: pointer;
  padding: 2px;
  border-radius: 4px;
  opacity: 0;
  transition: opacity 0.12s;
}

.message.assistant:hover .copyBtn,
.copyBtn:focus-visible {
  opacity: 0.8;
}

.bubble {
  padding: 10px 14px;
  border-radius: 12px;
  font-size: 13px;
  line-height: 1.5;
  white-space: pre-wrap;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

.root.mini .bubble {
  padding: 8px 11px;
  font-size: 12.5px;
  border-radius: 10px;
}

.message.user .bubble {
  background: var(--accent, #22c55e);
  color: #061a08;
  border-bottom-right-radius: 4px;
}

.message.assistant .bubble {
  background: var(--bg-secondary, #16161e);
  border: 1px solid var(--border, #1e1e2e);
  color: var(--text, #eee);
  border-bottom-left-radius: 4px;
}

.typing {
  color: var(--text-muted, #888);
  font-style: italic;
  font-size: 12px;
}

.codeBlock {
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--border, #1e1e2e);
  border-radius: 6px;
  padding: 8px 10px;
  font-family: 'Menlo', 'Monaco', 'Courier New', monospace;
  font-size: 12px;
  overflow-x: auto;
  margin: 6px 0;
  white-space: pre;
}

/* ── Streaming cursor ───────────────────────────────────────────────────── */
.cursor {
  display: inline-block;
  width: 7px;
  height: 14px;
  background: var(--accent, #22c55e);
  margin-left: 2px;
  vertical-align: text-bottom;
  animation: blink 0.9s infinite;
}

@keyframes blink {
  0%, 50%   { opacity: 1; }
  51%, 100% { opacity: 0; }
}

/* ── Metadata chips (the harmonized stats row) ──────────────────────────── */
.meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 11px;
  color: var(--text-muted, #888);
  padding: 0 4px;
}

.root.mini .meta {
  gap: 5px;
  font-size: 10.5px;
}

.metaChip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: var(--bg-secondary, #16161e);
  border: 1px solid var(--border, #1e1e2e);
  border-radius: 4px;
  padding: 2px 6px;
  font-family: 'Menlo', 'Monaco', monospace;
  line-height: 1.4;
}

/* addressed model under the user bubble */
.target {
  color: var(--text-muted, #aaa);
  opacity: 0.85;
}

/* served model chip — accent-tinted so it stands out */
.modelChip {
  color: var(--accent, #22c55e);
  border-color: rgba(34, 197, 94, 0.3);
}

.latencyChip {
  color: #fbbf24;
  border-color: rgba(251, 191, 36, 0.3);
}

.tpsChip {
  color: #60a5fa;
  border-color: rgba(96, 165, 250, 0.3);
}

.errorChip {
  color: #f87171;
  border-color: rgba(248, 113, 113, 0.3);
}

/* ── Input bar ──────────────────────────────────────────────────────────── */
.inputBar {
  display: flex;
  gap: 8px;
  align-items: flex-end;
  flex-shrink: 0;
  background: var(--bg-secondary, #16161e);
}

.root.full .inputBar {
  padding: 12px 16px;
  border-top: 1px solid var(--border, #1e1e2e);
}

.root.mini .inputBar {
  padding: 8px 0 0;
  gap: 6px;
}

.input {
  flex: 1;
  resize: none;
  min-height: 40px;
  max-height: 180px;
  background: var(--bg-primary, #0f0f17);
  border: 1px solid var(--border, #1e1e2e);
  border-radius: 8px;
  color: var(--text, #eee);
  padding: 9px 12px;
  font-size: 13px;
  font-family: inherit;
  line-height: 1.4;
  transition: border-color 0.12s;
}

.root.mini .input {
  min-height: 34px;
  padding: 7px 10px;
  font-size: 12.5px;
  border-radius: 7px;
}

.input:focus {
  outline: none;
  border-color: var(--accent, #22c55e);
}

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

.sendBtn,
.stopBtn {
  background: var(--accent, #22c55e);
  color: #061a08;
  border: none;
  border-radius: 8px;
  padding: 9px 14px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 40px;
  font-family: inherit;
  transition: filter 0.12s, opacity 0.12s;
  flex-shrink: 0;
}

.stopBtn {
  background: #ef4444;
  color: #fff;
}

.root.mini .sendBtn,
.root.mini .stopBtn {
  height: 34px;
  width: 34px;
  padding: 0;
  justify-content: center;
  border-radius: 7px;
}

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

.sendBtn:hover:not(:disabled),
.stopBtn:hover {
  filter: brightness(1.1);
}

.spin {
  animation: spin 0.9s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}