/* ===== 输入区域 ===== */
.composer {
  flex-shrink: 0;
  margin-top: 0.45rem;
  border: none;
  border-radius: 0;
  background: transparent;
  padding: 0.4rem;
  box-shadow: none;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== 内联附件区域 ===== */
.input-inline-area {
  display: none;
}
.input-inline-area.has-content {
  display: block;
}

.input-inline-images {
  display: flex;
  gap: 0.35rem;
  padding: 0.35rem 0.6rem 0;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.input-inline-images::-webkit-scrollbar { display: none; }

.input-inline-img-thumb-wrap {
  position: relative;
  height: 60px;
  flex-shrink: 0;
}

.input-inline-img-thumb {
  height: 60px;
  border-radius: 8px;
  cursor: pointer;
  display: block;
  border: 1px solid var(--border);
  transition: transform 0.12s ease;
}
.input-inline-img-thumb-wrap:hover .input-inline-img-thumb { transform: scale(1.05); }

.input-inline-img-del {
  position: absolute;
  top: -6px;
  right: -6px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--danger, #ef4444);
  color: #fff;
  border: 2px solid #fff;
  font-size: 12px;
  line-height: 1;
  cursor: pointer;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 0;
  z-index: 2;
  font-family: inherit;
}
.input-inline-img-thumb-wrap:hover .input-inline-img-del { display: flex; }
.input-inline-img-del:hover { filter: brightness(1.15); }

.input-inline-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.2rem;
  padding: 0.25rem 0.6rem 0;
}

/* ===== 新建会话确认弹窗 ===== */
.confirm-overlay {
  position: fixed;
  inset: 0;
  z-index: 9000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--overlay-bg);
  backdrop-filter: blur(4px);
}
.confirm-overlay[hidden] {
  display: none !important;
}

.confirm-dialog {
  background: #fff;
  border-radius: 14px;
  padding: 1.6rem;
  max-width: 420px;
  width: 90%;
  box-shadow: 0 20px 60px var(--shadow);
}

.confirm-title {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--muted);
  margin-bottom: 0.8rem;
}

.confirm-body {
  font-size: 0.88rem;
  color: var(--text-tertiary);
  line-height: 1.55;
  margin-bottom: 1.2rem;
}

.confirm-body strong {
  color: var(--warning);
  font-weight: 700;
}

.confirm-actions {
  display: flex;
  gap: 0.6rem;
  justify-content: flex-end;
}

.confirm-btn {
  padding: 0.45rem 0.9rem;
  border-radius: 8px;
  border: none;
  font-size: 0.82rem;
  font-family: inherit;
  cursor: pointer;
  transition: background 0.15s;
}

.confirm-btn--secondary {
  background: var(--border);
  color: var(--text-tertiary);
}
.confirm-btn--secondary:hover { background: var(--border); }

.confirm-btn--primary {
  background: var(--accent);
  color: #fff;
}
.confirm-btn--primary:hover { background: var(--accent-hover); }

.confirm-btn--danger {
  background: var(--danger);
  color: #fff;
}
.confirm-btn--danger:hover { background: var(--danger-hover); }

/* ===== 底部按钮行 ===== */
.composer-input-bottom-row {
  position: absolute;
  left: 0.4rem;
  right: 0.4rem;
  bottom: 0.35rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  z-index: 2;
  pointer-events: none;
}
.composer-input-bottom-row > * { pointer-events: auto; }

/* ===== 全局：main-content-wrap 在居中时折叠 ===== */
.main-content-wrap--collapsed {
  flex: 0 0 0 !important;
  overflow: hidden;
  min-height: 0;
}

/* ===== Composer 居中状态（空会话） ===== */
.composer--centered {
  margin-top: 2rem;
  padding: 2rem 0.4rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  flex: 1;
}

.composer--centered .composer-row {
  max-width: 700px;
  width: 100%;
  margin: 0 auto;
}

.composer--centered .token-bar {
  display: none !important;
}

/* 过渡到正常状态 */
.composer--bottom {
  margin-top: 0.45rem;
  padding: 0.4rem;
  flex: 0;
}

/* ===== Composer Row ===== */
.composer-row {
  display: flex;
  gap: 0.4rem;
  align-items: flex-end;
  width: 100%;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.mm-input {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.composer-input-shell {
  position: relative;
}

/* 拖拽附件到输入区时：显示"添加附件"提示 */
.composer-input-shell.is-drag-attach {
  outline: 2px dashed color-mix(in srgb, var(--accent) 55%, transparent);
  outline-offset: 3px;
  border-radius: 12px;
  transition: outline-color 0.15s ease;
}
.composer-input-shell.is-drag-attach::after {
  content: "添加附件";
  position: absolute;
  inset: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  border-radius: 12px;
  pointer-events: none;
}

.mm-input textarea {
  width: 100%;
  resize: vertical;
  min-height: 52px;
  max-height: 200px;
  border-radius: 12px;
  border: none;
  padding: 0.6rem 8rem 2.2rem 0.8rem;
  font: inherit;
  font-size: 0.92rem;
  background: rgba(255, 255, 255, 0.32);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: var(--text);
  line-height: 1.5;
}

.mm-input textarea::placeholder {
  color: var(--text-tertiary);
}

.mm-input textarea:focus {
  outline: 2px solid color-mix(in srgb, var(--accent) 35%, transparent);
  outline-offset: 1px;
  background: rgba(255, 255, 255, 0.42);
}

/* ===== Bottom-left: 输出模式 / Agent 模式 + 操作按钮 ===== */
.composer-input-bottom-left {
  display: flex;
  gap: 0.3rem;
  align-items: center;
}

.input-actions-sep {
  width: 1px;
  height: 14px;
  background: var(--divider);
  margin: 0 0.1rem;
}

/* ===== Bottom-right: mic / attachment / model / send ===== */
.composer-input-bottom-right {
  display: flex;
  gap: 0.15rem;
  align-items: center;
}
.inline-drop-wrap {
  position: relative;
}

.inline-drop-trigger {
  border: none;
  background: transparent;
  color: var(--text-tertiary);
  font-size: 0.72rem;
  font-family: inherit;
  cursor: pointer;
  padding: 0.1rem 0.2rem;
  border-radius: 4px;
  outline: none;
  transition: color 0.15s ease, background 0.15s ease;
  white-space: nowrap;
}

.inline-drop-trigger:hover,
.inline-drop-trigger.is-open {
  color: var(--accent);
  background: rgba(255, 255, 255, 0.3);
}

.inline-drop-trigger--model {
  font-size: 0.7rem;
  color: var(--text-tertiary);
  max-width: 100px;
  overflow: hidden;
  text-overflow: ellipsis;
  padding: 0.15rem 0.2rem;
  border-radius: 6px;
}

.inline-drop-trigger--model:hover,
.inline-drop-trigger--model.is-open {
  color: var(--accent);
  background-color: rgba(255, 255, 255, 0.25);
}

/* 下拉面板通用样式 */
.inline-drop-panel {
  position: absolute;
  bottom: calc(100% + 6px);
  left: 0;
  min-width: 120px;
  background: #fff;
  border-radius: 10px;
  box-shadow: 0 6px 24px var(--shadow), 0 2px 6px rgba(0, 0, 0, 0.06);
  z-index: 100;
  overflow: hidden;
  animation: wsDropInUp 0.2s ease;
}

/* 向下展开（欢迎区） */
.inline-drop-panel--down {
  bottom: auto;
  top: calc(100% + 6px);
  animation: wsDropInDown 0.2s ease;
}

.inline-drop-item {
  padding: 0.4rem 0.7rem;
  font-size: 0.78rem;
  color: var(--muted);
  cursor: pointer;
  transition: background 0.12s ease;
  white-space: nowrap;
}

.inline-drop-item:hover {
  background: color-mix(in srgb, var(--accent) 6%, transparent);
}

.inline-drop-item.is-selected {
  color: var(--accent, #0e7490);
  font-weight: 600;
  background: color-mix(in srgb, var(--accent) 8%, transparent);
}

/* 模型面板右对齐 */
#modelPanel {
  left: auto;
  right: 0;
  min-width: 140px;
  max-height: 240px;
  overflow-y: auto;
}

/* ===== 工作空间选择按钮 ===== */
.ws-btn-wrap {
  position: relative;
}

.ws-btn {
  width: 1.85rem;
  height: 1.85rem;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  border: none;
  outline: none;
  background: transparent;
  cursor: pointer;
  transition: transform 0.12s ease, background 0.15s ease;
  opacity: 0.55;
}

.ws-btn:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.4);
  opacity: 0.85;
}

.ws-btn.is-active {
  opacity: 0.9;
  background: color-mix(in srgb, var(--accent) 12%, transparent);
}

.ws-btn img {
  width: 0.95rem;
  height: 0.95rem;
  display: block;
}

/* 工作空间下拉框 */
.ws-dropdown {
  position: absolute;
  bottom: calc(100% + 8px);
  right: 0;
  min-width: 260px;
  max-width: 380px;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 8px 32px var(--shadow), 0 2px 8px rgba(0, 0, 0, 0.08);
  z-index: 100;
  overflow: hidden;
  animation: wsDropInUp 0.2s ease;
}

/* 向下展开（欢迎区） */
.ws-dropdown--down {
  bottom: auto;
  top: calc(100% + 8px);
  animation: wsDropInDown 0.2s ease;
}

@keyframes wsDropInUp {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes wsDropInDown {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.ws-dropdown-header {
  padding: 0.6rem 0.8rem 0.4rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.ws-dropdown-list {
  max-height: 240px;
  overflow-y: auto;
}

.ws-dropdown-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 0.8rem;
  cursor: pointer;
  transition: background 0.12s ease;
  position: relative;
}

.ws-dropdown-item:hover {
  background: color-mix(in srgb, var(--accent) 6%, transparent);
}

.ws-dropdown-item.is-selected {
  background: color-mix(in srgb, var(--accent) 10%, transparent);
}

.ws-dropdown-item-icon {
  width: 1rem;
  height: 1rem;
  flex-shrink: 0;
  opacity: 0.6;
}

.ws-dropdown-item-name {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 0.82rem;
  color: var(--muted);
}

.ws-dropdown-item.is-selected .ws-dropdown-item-name {
  font-weight: 600;
  color: var(--accent, #0e7490);
}

.ws-dropdown-item-delete {
  width: 1.5rem;
  height: 1.5rem;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: 6px;
  background: transparent;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.12s ease, background 0.12s ease;
  flex-shrink: 0;
}

.ws-dropdown-item:hover .ws-dropdown-item-delete {
  opacity: 0.5;
}

.ws-dropdown-item-delete:hover {
  opacity: 1 !important;
  background: var(--danger-bg);
}

.ws-dropdown-item-delete img {
  width: 0.8rem;
  height: 0.8rem;
  display: block;
}

/* 工作空间下拉框 - 默认项 */
.ws-dropdown-item--default .ws-dropdown-item-name {
  color: var(--text-tertiary);
  font-style: italic;
}

/* 添加按钮 */
.ws-dropdown-add {
  padding: 0.4rem 0.8rem 0.6rem;
  border-top: 1px solid var(--bg-tertiary);
}

.ws-add-btn {
  width: 100%;
  padding: 0.4rem 0;
  border: 1px dashed var(--border);
  border-radius: 8px;
  background: transparent;
  color: var(--text-tertiary);
  font-size: 0.78rem;
  font-family: inherit;
  cursor: pointer;
  transition: border-color 0.15s ease, color 0.15s ease, background 0.15s ease;
}

.ws-add-btn:hover {
  border-color: var(--accent, #0e7490);
  color: var(--accent, #0e7490);
  background: color-mix(in srgb, var(--accent) 4%, transparent);
}

/* ===== Bottom-right: mic / attachment / model / send ===== */
.composer-input-bottom-right {
  display: flex;
  gap: 0.15rem;
  align-items: center;
}

/* Mic button */
.mic-btn {
  width: 1.85rem;
  height: 1.85rem;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  border: none;
  outline: none;
  background: transparent;
  cursor: pointer;
  transition: transform 0.12s ease, background 0.15s ease;
  opacity: 0.55;
}

.mic-btn:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.4);
  opacity: 0.85;
}

.mic-btn:active:not(:disabled) {
  transform: scale(0.94);
}

.mic-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.mic-btn img {
  width: 0.95rem;
  height: 0.95rem;
  display: block;
}

.mic-btn.is-recording {
  background: rgba(254, 226, 226, 0.85);
  box-shadow: 0 0 0 3px var(--danger-bg);
  opacity: 1;
}

.mic-btn.is-recording img {
  filter: hue-rotate(315deg) saturate(1.2);
}

/* Attachment button */
.attachment-btn {
  width: 1.85rem;
  height: 1.85rem;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  border: none;
  background: transparent;
  cursor: pointer;
  transition: background 0.15s ease;
  opacity: 0.55;
}

.attachment-btn:hover {
  background: rgba(255, 255, 255, 0.4);
  opacity: 0.85;
}

.attachment-btn-icon {
  width: 0.85rem;
  height: 0.85rem;
  display: block;
}

/* Model select */
.inline-select--model {
  font-size: 0.7rem;
  color: var(--text-tertiary);
  max-width: 100px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  padding: 0.15rem 0.2rem;
  border: none;
  border-radius: 6px;
  background: transparent;
  transition: color 0.15s ease, background-color 0.15s ease;
  appearance: auto;
  -webkit-appearance: auto;
  -moz-appearance: auto;
  cursor: pointer;
  outline: none;
}

.inline-select--model:hover {
  color: var(--accent);
  background-color: rgba(255, 255, 255, 0.25);
}

/* 下拉选项：浅色背景，无边框 */
.inline-select--model option,
.inline-select option {
  border: none;
  outline: none;
  background: #fff;
  color: var(--text);
  padding: 0.35rem 0.6rem;
  font-size: 0.78rem;
  font-family: inherit;
}

/* Send button - transparent */
.send-btn {
  width: 2rem;
  height: 2rem;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  border: none;
  outline: none;
  background: transparent;
  cursor: pointer;
  transition: background 0.15s ease, transform 0.1s ease, opacity 0.15s ease;
  opacity: 0.55;
}

.send-btn:hover:not(:disabled) {
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  opacity: 0.9;
}

.send-btn:active:not(:disabled) {
  transform: scale(0.93);
}

.send-btn:disabled {
  opacity: 0.25;
  cursor: not-allowed;
}

.send-btn-icon {
  width: 1.15rem;
  height: 1.15rem;
  display: block;
}

.send-btn svg {
  width: 12px;
  height: 12px;
  display: block;
}

.send-btn.btn-pause {
  opacity: 0.85;
  background: var(--accent, #0e7490);
  color: #fff;
}

/* ===== 通用按钮（保留用于其他区域） ===== */
.btn {
  font: inherit;
  cursor: pointer;
  border-radius: 8px;
  padding: 0.35rem 0.6rem;
  border: none;
  outline: none;
  background: rgba(255, 255, 255, 0.4);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: var(--text);
  transition: background 0.15s ease, border-color 0.15s ease, transform 0.1s ease;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: linear-gradient(165deg, #0d9488, var(--accent));
  color: #fff;
  box-shadow: 0 4px 14px color-mix(in srgb, var(--accent) 35%, transparent);
}

.btn-primary:hover:not(:disabled) {
  background: linear-gradient(165deg, #14b8a6, var(--accent-hover));
}

.btn-primary:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.35);
}

.btn-danger {
  background: var(--danger-bg);
  color: var(--danger-hover);
}

.btn-danger:hover:not(:disabled) {
  background: var(--danger-bg);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.2);
}

/* ===== 附件预览 chip ===== */
.chip {
  font-size: 0.75rem;
  padding: 0.22rem 0.5rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.45);
  border: none;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.chip-icon {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  opacity: 0.7;
}

.chip--folder {
  background: color-mix(in srgb, var(--accent) 8%, transparent);
}

.chip--folder .chip-icon {
  opacity: 0.9;
}

.chip button {
  border: none;
  background: none;
  cursor: pointer;
  padding: 0;
  font-size: 1rem;
  line-height: 1;
  color: var(--muted);
}


/* ===== 引用 chip ===== */
.ref-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.22rem 0.45rem;
  border-radius: 999px;
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  border: none;
  font-size: 0.73rem;
  color: var(--accent, #0e7490);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  animation: chipIn 0.2s ease;
  max-width: 220px;
}

.ref-chip-icon {
  flex-shrink: 0;
  width: 14px;
  height: 14px;
  opacity: 0.7;
}

.ref-chip-thumb {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 4px;
  object-fit: cover;
}

.ref-chip-label {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.ref-chip-close {
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  border: none;
  border-radius: 50%;
  background: color-mix(in srgb, var(--accent) 20%, transparent);
  color: var(--accent, #0e7490);
  cursor: pointer;
  font-size: 0.65rem;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  line-height: 1;
  transition: background 0.15s;
}

.ref-chip-close:hover {
  background: var(--danger-bg);
  color: var(--danger);
}

.ref-chip--folder {
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  color: var(--accent);
}

.ref-chip--folder .ref-chip-close {
  background: color-mix(in srgb, var(--accent) 20%, transparent);
  color: var(--accent);
}

.ref-chip--folder .ref-chip-close:hover {
  background: var(--danger-bg);
  color: var(--danger);
}

/* ===== 引用 bar ===== */
.composer-refs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  padding: 0.3rem 0.6rem 0;
}

.composer-refs[hidden] {
  display: none;
}

@keyframes chipIn {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}

/* ===== 操作图标按钮 ===== */
.action-icon-btn {
  width: 1.7rem;
  height: 1.7rem;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  border: none;
  outline: none;
  background: transparent;
  cursor: pointer;
  opacity: 0.4;
  transition: opacity 0.15s ease, background 0.15s ease;
}

.action-icon-btn:hover {
  opacity: 0.75;
  background: rgba(255, 255, 255, 0.3);
}

.action-icon-btn.is-active {
  opacity: 0.9;
  background: color-mix(in srgb, var(--accent) 12%, transparent);
}

.action-icon-btn img {
  width: 0.95rem;
  height: 0.95rem;
  display: block;
}

.action-icon-btn .badge-dot {
  position: absolute;
  top: 2px;
  right: 2px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--danger);
}

/* ===== 文件预览浮窗 ===== */
.file-preview-overlay {
  position: fixed;
  inset: 0;
  background: var(--overlay-bg);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.15s ease;
}
.file-preview-overlay[hidden] {
  display: none !important;
}

.file-preview-dialog {
  background: #fff;
  border-radius: 14px;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.18);
  width: min(90vw, 900px);
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: wsDropInDown 0.2s ease;
}

.file-preview-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1rem;
  border-bottom: 1px solid var(--bg-tertiary);
  flex-shrink: 0;
}

.file-preview-name {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--muted);
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-preview-status {
  font-size: 0.72rem;
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  font-weight: 500;
}

.file-preview-status--new { color: var(--success); background: rgba(34,197,94,0.1); }
.file-preview-status--modified { color: var(--warning); background: rgba(234,179,8,0.1); }
.file-preview-status--deleted { color: var(--danger); background: var(--danger-bg); }

.file-preview-actions { display: flex; gap: 0.3rem; }

.file-preview-btn {
  width: 1.8rem;
  height: 1.8rem;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: 6px;
  background: transparent;
  cursor: pointer;
  font-size: 0.85rem;
  color: var(--text-tertiary);
  transition: background 0.12s ease;
}

.file-preview-btn:hover { background: rgba(0,0,0,0.06); }
.file-preview-close:hover { color: var(--danger); }

.file-preview-body {
  flex: 1;
  overflow: auto;
  padding: 0;
  min-height: 200px;
}

.file-preview-body img {
  max-width: 100%;
  display: block;
  margin: 0 auto;
}

.file-preview-body iframe {
  width: 100%;
  height: 500px;
  border: none;
}

.file-preview-body pre {
  margin: 0;
  padding: 1rem;
  font-family: 'Cascadia Code', 'Fira Code', Consolas, monospace;
  font-size: 0.82rem;
  line-height: 1.55;
  white-space: pre-wrap;
  word-break: break-all;
  color: var(--muted);
}

/* 文件预览：带行号的代码视图 */
.fp-code-wrap {
  display: flex;
  font-family: 'Cascadia Code', 'Fira Code', Consolas, monospace;
  font-size: 0.82rem;
  line-height: 1.55;
  color: var(--muted);
  overflow: auto;
  max-height: 65vh;
}

.fp-line-nos {
  flex-shrink: 0;
  padding: 0.6rem 0.5rem 0.6rem 0.8rem;
  text-align: right;
  color: var(--text-tertiary);
  user-select: none;
  border-right: 1px solid var(--border);
}

.fp-line-nos span {
  display: block;
  min-width: 2.5em;
}

.fp-code-lines {
  flex: 1;
  padding: 0.6rem 1rem 0.6rem 0.8rem;
  white-space: pre-wrap;
  word-break: break-all;
}

.fp-code-lines span {
  display: block;
}

.fp-code-lines span::selection {
  background: color-mix(in srgb, var(--accent) 20%, transparent);
}

/* 文件预览：表格按列着色（覆盖上面的 display:block，单元格保持 inline） */
.fp-table-wrap .fp-code-lines {
  word-break: normal;
}
.fp-code-lines .fp-tbl-cell {
  display: inline;
  padding-right: 0.5em;
}
.fp-code-lines .fp-tbl-cell--header {
  font-weight: 600;
}

.file-preview-body svg {
  max-width: 100%;
  max-height: 75vh;
  display: block;
  margin: 1rem auto;
}

.file-preview-body .preview-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 3rem;
  color: var(--text-tertiary);
  font-size: 0.9rem;
}

/* ===== 文档修改面板 ===== */
.doc-mod-panel {
  position: fixed;
  right: 0;
  top: 0;
  bottom: 0;
  width: 320px;
  background: #fff;
  box-shadow: -4px 0 20px rgba(0, 0, 0, 0.1);
  z-index: 950;
  display: flex;
  flex-direction: column;
  animation: slideInRight 0.2s ease;
}
.doc-mod-panel[hidden] {
  display: none !important;
}

@keyframes slideInRight {
  from { transform: translateX(100%); }
  to { transform: translateX(0); }
}

.doc-mod-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.7rem 1rem;
  border-bottom: 1px solid var(--bg-tertiary);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--muted);
  flex-shrink: 0;
}

.doc-mod-close {
  border: none;
  background: none;
  cursor: pointer;
  font-size: 1rem;
  color: var(--text-tertiary);
  padding: 0.2rem;
  line-height: 1;
}

.doc-mod-close:hover { color: var(--danger); }

.doc-mod-list {
  flex: 1;
  overflow-y: auto;
  padding: 0.5rem 0;
}

.doc-mod-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 1rem;
  font-size: 0.8rem;
  border-bottom: 1px solid #f8fafc;
}

.doc-mod-item-name {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.doc-mod-item--new .doc-mod-item-name { color: var(--success); }
.doc-mod-item--modified .doc-mod-item-name { color: var(--warning); }
.doc-mod-item--deleted .doc-mod-item-name { color: var(--danger); text-decoration: line-through; }

.doc-mod-item-actions {
  display: flex;
  gap: 0.2rem;
  flex-shrink: 0;
}

.doc-mod-accept,
.doc-mod-reject {
  width: 1.5rem;
  height: 1.5rem;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.75rem;
  transition: background 0.12s ease;
}

.doc-mod-accept {
  color: var(--success);
  background: transparent;
}
.doc-mod-accept:hover { background: rgba(34,197,94,0.1); }

.doc-mod-reject {
  color: var(--danger);
  background: transparent;
}
.doc-mod-reject:hover { background: var(--danger-bg); }

.doc-mod-actions {
  display: flex;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-top: 1px solid var(--bg-tertiary);
  flex-shrink: 0;
}

.doc-mod-actions .btn {
  flex: 1;
  font-size: 0.78rem;
  padding: 0.35rem;
}

.doc-mod-item-info {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  flex: 1;
  min-width: 0;
}

.doc-mod-item-tag {
  font-size: 0.65rem;
  font-weight: 600;
  padding: 0.08rem 0.35rem;
  border-radius: 4px;
  flex-shrink: 0;
  text-transform: uppercase;
}

.doc-mod-item--new .doc-mod-item-tag { background: #dcfce7; color: var(--success); }
.doc-mod-item--modified .doc-mod-item-tag { background: #fef9c3; color: var(--warning); }
.doc-mod-item--deleted .doc-mod-item-tag { background: #fee2e2; color: var(--danger); }

.doc-mod-item-diff {
  margin-top: 0.4rem;
  padding: 0.35rem;
  background: #f8fafc;
  border-radius: 6px;
  border: 1px solid var(--border);
  max-height: 180px;
  overflow-y: auto;
  font-family: 'Consolas', 'Monaco', monospace;
  font-size: 0.7rem;
  line-height: 1.45;
}

.diff-line {
  display: flex;
  gap: 0.4rem;
  padding: 0.08rem 0;
  white-space: pre-wrap;
  word-break: break-all;
}

.diff-ln {
  flex-shrink: 0;
  color: var(--text-tertiary);
  min-width: 3rem;
  text-align: right;
  font-size: 0.66rem;
  user-select: none;
}

.diff-add { color: var(--warning); background: var(--warning-bg); }
.diff-add .diff-ln { color: var(--warning); }

.diff-remove { color: var(--danger); background: var(--danger-bg); }
.diff-remove .diff-ln { color: var(--danger); }

.diff-text { flex: 1; min-width: 0; }

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ===== Token 上下文进度条 ===== */
.token-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 4px;
  padding: 0 4px;
  transition: opacity 0.25s ease;
}
.token-bar.token-bar--hidden {
  display: none !important;
}

.token-bar-track {
  flex: 1;
  position: relative;
  height: 5px;
  border-radius: 3px;
  background: var(--divider);
  overflow: visible;
}

.token-bar-seg {
  position: absolute;
  top: 0;
  height: 100%;
  left: 0;
  border-radius: 3px 0 0 3px;
  transition: width 0.35s ease;
  pointer-events: none;
}
.token-bar-seg--green {
  background: var(--success, #22c55e);
  opacity: 0.45;
  z-index: 1;
  border-radius: 3px 0 0 3px;
}
.token-bar-seg--red {
  background: var(--danger, #ef4444);
  opacity: 0.85;
  z-index: 1;
  border-radius: 0 3px 3px 0;
}

.token-bar-fill {
  display: none;
}

.token-handle {
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%);
  z-index: 10;
  cursor: ew-resize;
  user-select: none;
  transition: transform 0.15s ease;
}
.token-handle:hover {
  transform: translate(-50%, -50%) scale(1.3);
}
.token-handle.dragging {
  transform: translate(-50%, -50%) scale(1.45);
}

.token-handle-dot {
  width: 8px;
  height: 14px;
  border-radius: 2px;
  background: var(--accent, #0e7490);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 20%, transparent);
  transition: background 0.2s, box-shadow 0.2s;
}
.token-handle:hover .token-handle-dot,
.token-handle.dragging .token-handle-dot {
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 18%, transparent);
}

.token-handle--compress .token-handle-dot {
  background: var(--accent, #0e7490);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 25%, transparent);
}

.token-handle.overshot .token-handle-dot {
  animation: handlePulse 0.6s ease-in-out infinite alternate;
}
@keyframes handlePulse {
  from { box-shadow: 0 0 0 2px color-mix(in srgb, var(--danger) 15%, transparent); }
  to   { box-shadow: 0 0 0 5px color-mix(in srgb, var(--danger) 10%, transparent); }
}

.token-label {
  font-size: 0.66rem;
  font-weight: 500;
  white-space: nowrap;
  min-width: 78px;
  text-align: right;
  font-variant-numeric: tabular-nums;
  opacity: 0.6;
  transition: opacity 0.25s, color 0.25s;
}

.token-label--safe    { color: var(--success, #22c55e); }
.token-label--warn    { color: var(--warning, #f59e0b); }
.token-label--danger  { color: var(--danger, #ef4444); }