/*
 * llm.css — LLM chat tab styles.
 *
 * BEM namespace: .llm__*
 * Layout: header (model selector + device badge + settings toggle)
 *         settings panel (collapsible)
 *         status bar
 *         chat area (flex-grow, scrollable)
 *         input row (text input + send + clear)
 */

/* ---- Container ---- */
.llm {
  display: flex;
  flex-direction: column;
  height: 100%;
  max-width: 760px;
  margin: 0 auto;
  width: 100%;
  padding: var(--space-3, 12px);
  gap: var(--space-2, 8px);
}

/* ---- Header bar ---- */
.llm__header {
  display: flex;
  align-items: center;
  gap: var(--space-2, 8px);
  flex-shrink: 0;
}

.llm__model-select {
  flex: 1;
  min-width: 0;
}

.llm__label {
  display: block;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-muted, #888);
  margin-bottom: 2px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.llm__select {
  width: 100%;
  padding: 6px 10px;
  border: 1px solid var(--border, #ddd);
  border-radius: var(--radius-sm, 6px);
  font-size: 0.85rem;
  background: var(--surface, #fff);
  color: var(--text, #222);
}

.llm__device-badge {
  flex-shrink: 0;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--surface-alt, #f1f5f9);
  color: var(--text-muted, #666);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.llm__device-badge--gpu {
  background: #dcfce7;
  color: #166534;
}

.llm__settings-btn {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border: 1px solid var(--border, #ddd);
  border-radius: 50%;
  background: var(--surface, #fff);
  cursor: pointer;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s;
}
.llm__settings-btn:hover {
  background: var(--surface-alt, #f1f5f9);
}

/* ---- Settings panel ---- */
.llm__settings {
  flex-shrink: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3, 12px);
  padding: var(--space-3, 12px);
  background: var(--surface-alt, #f8fafc);
  border: 1px solid var(--border, #e2e8f0);
  border-radius: var(--radius, 8px);
}

.llm__settings-row {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 160px;
}

.llm__settings-row .llm__label {
  margin-bottom: 0;
  min-width: 80px;
}

.llm__input {
  flex: 1;
  min-width: 60px;
  padding: 4px 8px;
  border: 1px solid var(--border, #ddd);
  border-radius: var(--radius-sm, 6px);
  font-size: 0.85rem;
  background: var(--surface, #fff);
}

.llm__range {
  flex: 1;
  min-width: 80px;
  accent-color: var(--accent, #3b82f6);
}

.llm__range-val {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted, #666);
  min-width: 28px;
  text-align: right;
}

/* ---- Status bar ---- */
.llm__status {
  flex-shrink: 0;
  font-size: 0.8rem;
  color: var(--text-muted, #666);
  padding: 4px 8px;
  border-radius: var(--radius-sm, 6px);
  background: var(--surface-alt, #f1f5f9);
}

.llm__status--error {
  color: #dc2626;
  background: #fef2f2;
}

/* ---- Chat area ---- */
.llm__chat {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-2, 8px);
  padding: var(--space-2, 8px);
  min-height: 120px;
}

/* ---- Message bubbles ---- */
.llm__msg {
  max-width: 85%;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

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

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

.llm__msg-role {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted, #888);
}

.llm__msg-body {
  padding: 8px 12px;
  border-radius: var(--radius, 10px);
  font-size: 0.9rem;
  line-height: 1.5;
  word-break: break-word;
  white-space: pre-wrap;
}

.llm__msg--user .llm__msg-body {
  background: var(--accent, #3b82f6);
  color: #fff;
  border-bottom-right-radius: 2px;
}

.llm__msg--assistant .llm__msg-body {
  background: var(--accent-soft);
  color: var(--text);
  border-bottom-left-radius: 2px;
}

/* ---- Input row ---- */
.llm__input-row {
  flex-shrink: 0;
  display: flex;
  gap: var(--space-2, 8px);
  align-items: center;
}

.llm__input-row .llm__input {
  flex: 1;
  min-width: 0;
  padding: 8px 12px;
  border: 1px solid var(--border, #ddd);
  border-radius: var(--radius, 8px);
  font-size: 0.9rem;
}

.llm__send {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border: none;
  border-radius: 50%;
  background: var(--accent, #3b82f6);
  color: #fff;
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.15s;
}
.llm__send:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.llm__clear {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border: 1px solid var(--border, #ddd);
  border-radius: 50%;
  background: var(--surface, #fff);
  color: var(--text-muted, #888);
  font-size: 0.9rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.15s, border-color 0.15s;
}
.llm__clear:hover {
  color: var(--danger, #dc2626);
  border-color: var(--danger, #dc2626);
}