/* 学习陪练聊天抽屉 */

.chat-dock {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 90;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 10px;
  font-family: var(--sans, system-ui, sans-serif);
}

.chat-fab {
  padding: 9px 16px;
  color: var(--panel-text, #f3efe4);
  background: var(--panel, #20231d);
  border: 1px solid var(--panel, #20231d);
  border-radius: 999px;
  box-shadow: 0 16px 30px -20px rgba(22, 25, 19, 0.6);
  font-size: 12.5px;
  letter-spacing: 0.02em;
  cursor: pointer;
}

.chat-fab:hover { background: var(--panel-soft, #292d25); }

.chat-panel {
  display: flex;
  flex-direction: column;
  width: min(400px, calc(100vw - 32px));
  height: min(640px, calc(100vh - 92px));
  background: var(--bg, #f8f5ed);
  border: 1px solid var(--line-strong, rgba(29, 32, 26, 0.22));
  border-radius: 6px;
  box-shadow: 0 30px 60px -30px rgba(22, 25, 19, 0.55);
  overflow: hidden;
}

.chat-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line, rgba(29, 32, 26, 0.13));
}

.chat-title {
  color: var(--ink, #1c1f18);
  font-size: 13px;
  font-weight: 680;
}

.chat-model {
  margin-left: auto;
  color: var(--ink-faint, #86887c);
  font-family: var(--mono, ui-monospace, monospace);
  font-size: 10.5px;
  letter-spacing: 0.04em;
}

.chat-close {
  padding: 4px 9px;
  color: var(--ink-soft, #62645a);
  background: transparent;
  border: 1px solid var(--line-strong, rgba(29, 32, 26, 0.22));
  border-radius: 3px;
  font: inherit;
  font-size: 11.5px;
  cursor: pointer;
}

.chat-log {
  flex: 1 1 auto;
  padding: 12px;
  overflow-y: auto;
  scrollbar-width: thin;
}

.chat-empty {
  margin: 6px 0 0;
  color: var(--ink-faint, #86887c);
  font-size: 12px;
  line-height: 1.7;
}

.chat-msg { margin: 0 0 14px; }

.chat-msg.chat-user {
  padding: 8px 11px;
  color: var(--ink, #1c1f18);
  background: rgba(198, 94, 56, 0.09);
  border-left: 2px solid var(--accent, #c65e38);
  border-radius: 2px;
  font-size: 12.5px;
  line-height: 1.72;
}

.chat-body p { margin: 0 0 8px; font-size: 12.5px; line-height: 1.78; }
.chat-body p:last-child { margin-bottom: 0; }
.chat-body .chat-h { margin: 10px 0 6px; font-weight: 680; }
.chat-body .chat-li { margin: 0 0 5px 16px; font-size: 12.5px; line-height: 1.72; }
.chat-body code {
  padding: 1px 4px;
  background: rgba(29, 32, 26, 0.06);
  border-radius: 2px;
  font-family: var(--mono, ui-monospace, monospace);
  font-size: 11.5px;
}

.chat-code {
  margin: 8px 0;
  padding: 9px 11px;
  color: var(--panel-text, #f3efe4);
  background: var(--panel, #20231d);
  border-radius: 4px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.chat-code code {
  padding: 0;
  color: inherit;
  background: none;
  font-size: 11.5px;
  line-height: 1.7;
}

.chat-think {
  margin: 0 0 8px;
  padding: 6px 9px;
  color: var(--ink-faint, #86887c);
  background: rgba(29, 32, 26, 0.04);
  border-radius: 3px;
  font-size: 11.5px;
}

.chat-think summary { cursor: pointer; font-size: 11px; letter-spacing: 0.02em; }
.chat-think-body { margin-top: 6px; white-space: pre-wrap; line-height: 1.7; }

.chat-flag { margin: 6px 0 0; color: #a8322c; font-size: 11px; }

.chat-actions { margin-top: 6px; }

.chat-actions button {
  padding: 3px 8px;
  color: var(--ink-faint, #86887c);
  background: transparent;
  border: 1px solid var(--line, rgba(29, 32, 26, 0.13));
  border-radius: 3px;
  font: inherit;
  font-size: 10.5px;
  cursor: pointer;
}

.chat-tools {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  padding: 8px 12px;
  border-top: 1px solid var(--line, rgba(29, 32, 26, 0.13));
  font-size: 11.5px;
  color: var(--ink-soft, #62645a);
}

.chat-effort { display: inline-flex; align-items: center; gap: 6px; }

.chat-effort select {
  padding: 3px 6px;
  color: var(--ink, #1c1f18);
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid var(--line-strong, rgba(29, 32, 26, 0.22));
  border-radius: 3px;
  font: inherit;
  font-size: 11.5px;
}

.chat-check { display: inline-flex; align-items: center; gap: 5px; cursor: pointer; }
.chat-check input { margin: 0; accent-color: var(--accent, #c65e38); }

.chat-clear,
.chat-stop {
  margin-left: auto;
  padding: 3px 8px;
  color: var(--ink-soft, #62645a);
  background: transparent;
  border: 1px solid var(--line-strong, rgba(29, 32, 26, 0.22));
  border-radius: 3px;
  font: inherit;
  font-size: 11px;
  cursor: pointer;
}

.chat-stop { color: #a8322c; border-color: rgba(168, 50, 44, 0.4); }

.chat-input {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  padding: 0 12px 10px;
}

.chat-input textarea {
  flex: 1 1 auto;
  min-height: 44px;
  max-height: 140px;
  padding: 8px 10px;
  color: var(--ink, #1c1f18);
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid var(--line-strong, rgba(29, 32, 26, 0.22));
  border-radius: 4px;
  font: inherit;
  font-size: 12.5px;
  line-height: 1.6;
  resize: vertical;
}

.chat-input button {
  padding: 9px 14px;
  color: var(--panel-text, #f3efe4);
  background: var(--panel, #20231d);
  border: 1px solid var(--panel, #20231d);
  border-radius: 4px;
  font: inherit;
  font-size: 12.5px;
  cursor: pointer;
}

.chat-input button:disabled { opacity: 0.55; cursor: default; }

.chat-note {
  margin: 0;
  padding: 0 12px 10px;
  color: #a8322c;
  font-size: 11px;
  line-height: 1.6;
}

@media (max-width: 680px) {
  .chat-dock { right: 10px; bottom: 10px; left: 10px; align-items: flex-end; }
  .chat-panel { width: auto; height: min(72vh, 620px); }
}

@media print {
  .chat-dock { display: none; }
}