/* settings-tabs.css - Settings UI Tab Layout */

#settings-modal {
  --settings-surface-subtle: color-mix(in srgb, var(--surface-panel) 74%, transparent);
  --settings-surface-soft: color-mix(in srgb, var(--surface-glass) 84%, transparent);
  --settings-surface-soft-strong: color-mix(in srgb, var(--surface-glass-strong) 88%, transparent);
  --settings-surface-raised: color-mix(in srgb, var(--surface-panel-strong) 92%, transparent);
  --settings-border-soft: color-mix(in srgb, var(--border-soft) 82%, transparent);
  --settings-border-strong: color-mix(in srgb, var(--border-strong) 76%, transparent);
  --settings-border-accent: color-mix(in srgb, var(--brand-primary) 28%, var(--border-soft));
  --settings-accent-fill: color-mix(in srgb, var(--brand-primary) 8%, transparent);
  --settings-accent-fill-strong: color-mix(in srgb, var(--brand-primary) 12%, transparent);
  --settings-accent-text: color-mix(in srgb, var(--brand-primary) 84%, var(--text-primary));
  --settings-danger-fill: color-mix(in srgb, var(--status-danger) 8%, transparent);
  --settings-danger-border: color-mix(in srgb, var(--status-danger) 34%, var(--border-soft));
  --settings-danger-text: color-mix(in srgb, var(--status-danger) 82%, var(--text-primary));
  --settings-success-fill: color-mix(in srgb, var(--status-success) 8%, transparent);
  --settings-success-border: color-mix(in srgb, var(--status-success) 28%, var(--border-soft));
  --settings-success-text: color-mix(in srgb, var(--status-success) 82%, var(--text-primary));
}

/* ============================================
   Modal Layout
   ============================================ */
.settings-modal-wide {
  display: flex;
  flex-direction: column;
  max-height: 95vh;
  overflow: hidden;
  /* Keep existing width: 740px, max-width: 90vw */
}

/* ============================================
   API Settings Mode Toggle (高级设置开关)
   ============================================ */
.api-advanced-toggle-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  margin-top: 16px;
  margin-bottom: 12px;
  background: var(--settings-surface-subtle);
  border: 1px solid var(--settings-border-soft);
  border-radius: var(--radius-md);
}

.api-advanced-toggle-label {
  font-size: var(--text-body);
  font-weight: var(--weight-semibold);
  color: var(--text-color);
  white-space: nowrap;
}

.api-advanced-toggle-hint {
  flex: 1;
  font-size: var(--text-caption);
  color: var(--text-secondary);
  min-width: 0;
}

/* --- Simple Config Panel --- */
.api-simple-config {
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: opacity var(--transition-slow);
}

.api-simple-config.disabled {
  opacity: 0.35;
  pointer-events: none;
}

.api-simple-hint {
  font-size: var(--text-caption);
  color: var(--text-secondary);
  font-weight: var(--weight-normal);
}

.api-hint-red {
  color: var(--status-danger);
}

/* ============================================
   Content Area
   ============================================ */
.settings-body {
  flex: 1;
  overflow-y: auto;
  position: relative;
  padding: 0;
}

.settings-tab-content {
  display: none !important;
  height: 100%;
}

.settings-tab-content.active {
  display: block !important;
}

/* Placeholder for undeveloped tabs */
.settings-tab-placeholder {
  padding: 40px;
  text-align: center;
  color: var(--text-secondary);
}

/* ============================================
   Shared: Two-Column Tab Layout (Step1 & Step2 & Step3)
   ============================================ */
#tab-step1,
#tab-api,
#tab-prompts,
#tab-step3 {
  padding: 0;
}

#tab-step1 .settings-two-column,
#tab-api .settings-two-column,
#tab-prompts .settings-two-column,
#tab-step3 .settings-two-column {
  height: 100%;
}

#tab-step1 .settings-left-column,
#tab-api .settings-left-column,
#tab-prompts .settings-left-column,
#tab-step3 .settings-left-column {
  overflow-y: auto;
  border-right: 1px solid var(--settings-border-soft);
}

#tab-step1 .settings-right-column,
#tab-api .settings-right-column,
#tab-prompts .settings-right-column,
#tab-step3 .settings-right-column {
  width: auto;
  flex: 1;
  padding-top: 0;
  gap: 0;
}

/* --- Shared: Section Header (title + reset btn) --- */
.step-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 4px;
}

.step-section-title {
  font-size: var(--text-body);
  font-weight: var(--weight-semibold);
  color: var(--text-primary);
}

/* --- Shared: Reset Button --- */
.step-reset-btn,
.step1-reset-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--text-body-sm);
  padding: 3px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--settings-border-soft);
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.step-reset-btn .material-symbols-outlined,
.step1-reset-btn .material-symbols-outlined {
  font-size: var(--text-title);
  line-height: 1;
}

.step-reset-btn:hover,
.step1-reset-btn:hover {
  background: var(--settings-accent-fill);
  color: var(--settings-accent-text);
  border-color: var(--settings-border-accent);
}

/* --- Shared: Prompt Column (right side) --- */
.step-prompt-column {
  display: flex;
  flex-direction: column;
}

.step-prompt-group {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  padding: 16px 20px;
}

.step-prompt-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 4px;
}

.step-prompt-header label {
  font-size: var(--text-body);
  font-weight: var(--weight-semibold);
  color: var(--text-primary);
}

.step-prompt-textarea {
  flex: 1;
  min-height: 300px;
  resize: vertical;
}

/* ============================================
   Step 1: Function Call Reference Panel
   ============================================ */
.step1-functions-panel {
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* --- Step1 Prompt Editor (right column) - aliases --- */
.step1-prompt-column {
  display: flex;
  flex-direction: column;
}

.step1-prompt-group {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  padding: 16px 20px;
}

.step1-prompt-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 4px;
}

.step1-prompt-header label {
  font-size: var(--text-body);
  font-weight: var(--weight-semibold);
  color: var(--text-primary);
}

.step1-prompt-textarea {
  flex: 1;
  min-height: 300px;
  resize: vertical;
}

/* --- Function List Header --- */
.step1-fn-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 4px;
}

.step1-fn-title {
  font-size: var(--text-body);
  font-weight: var(--weight-semibold);
  color: var(--text-primary);
}

.step1-fn-actions {
  display: flex;
  gap: 6px;
  align-items: center;
}

#step1-fn-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* --- Default Function Group (collapsible) --- */
.fn-group {
  border: 1px solid var(--settings-border-accent);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition:
    opacity 0.2s ease,
    border-color var(--transition-base);
}

.fn-group-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  cursor: pointer;
  user-select: none;
  background: var(--settings-accent-fill);
  transition: background var(--transition-fast);
}

.fn-group-header:hover {
  background: var(--settings-accent-fill-strong);
}

.fn-group-chevron {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-heading);
  line-height: 1;
  color: var(--text-secondary);
  transition: transform var(--transition-base);
  flex-shrink: 0;
  width: 18px;
  text-align: center;
}

.fn-group.fn-group-expanded .fn-group-chevron {
  transform: rotate(90deg);
}

.fn-group-title {
  font-size: var(--text-body);
  font-weight: var(--weight-semibold);
  color: var(--text-primary);
}

.fn-group-count {
  font-size: var(--text-caption);
  color: var(--text-secondary);
  background: var(--settings-surface-soft);
  border-radius: var(--radius-lg);
  border: 1px solid var(--settings-border-soft);
  padding: 1px 7px;
  font-weight: var(--weight-medium);
}

.fn-group-body {
  max-height: 0;
  overflow: hidden;
  padding: 0;
  transition: max-height var(--transition-slow);
}

.fn-group.fn-group-expanded .fn-group-body {
  max-height: none;
  overflow: visible;
  padding: 8px 10px 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.fn-resident-virtual-item {
  border-radius: var(--radius-md);
  border: 1px dashed var(--settings-border-soft);
  background: var(--settings-surface-subtle);
  padding: 8px 10px;
}

.fn-resident-virtual-item.readonly {
  opacity: 0.72;
}

.fn-resident-virtual-title {
  font-family: var(--font-mono);
  font-size: var(--text-body-sm);
  font-weight: var(--weight-semibold);
  color: var(--text-secondary);
  letter-spacing: -0.1px;
}

.fn-resident-virtual-desc {
  margin-top: 4px;
  font-size: var(--text-body-sm);
  line-height: 1.45;
  color: var(--text-secondary);
}

.fn-resident-virtual-content {
  margin-top: 8px;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--settings-border-soft);
  background: var(--settings-surface-subtle);
  font-family: var(--font-mono);
  font-size: var(--text-caption);
  line-height: 1.5;
  color: var(--text-secondary);
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 220px;
  overflow-y: auto;
}

.fn-resident-virtual-content.is-empty {
  font-style: italic;
  color: var(--text-soft);
}

.fn-group-note {
  border: 1px dashed var(--settings-border-accent);
  border-radius: var(--radius-md);
  padding: 8px 10px;
  background: var(--settings-accent-fill);
}

.fn-group-note-title {
  font-size: var(--text-body-sm);
  font-weight: var(--weight-semibold);
  color: var(--text-primary);
}

.fn-group-note-body {
  margin-top: 4px;
  font-size: var(--text-body-sm);
  color: var(--text-secondary);
  line-height: 1.45;
}

.fn-group-note-readonly {
  opacity: 0.95;
}

/* Disabled state (master toggle OFF) */
.fn-group.fn-group-disabled {
  opacity: 0.4;
  border-color: var(--settings-border-soft);
}

.fn-group.fn-group-disabled .fn-group-header {
  cursor: default;
  background: var(--settings-surface-subtle);
}

.fn-group.fn-group-disabled .fn-group-chevron {
  visibility: hidden;
}

.fn-group.fn-group-disabled .fn-group-body {
  max-height: 0 !important;
  padding: 0 !important;
  overflow: hidden !important;
}

/* --- Toggle Switch (shared by group & card) --- */
.fn-toggle-switch {
  margin-left: auto;
  position: relative;
  display: inline-block;
  width: 40px;
  height: 22px;
  flex-shrink: 0;
}

.fn-toggle-switch input {
  display: none;
}

.fn-toggle-slider {
  position: absolute;
  inset: 0;
  background: var(--settings-border-strong);
  border-radius: var(--radius-pill);
  transition: background var(--transition-base);
  cursor: pointer;
}

.fn-toggle-slider::before {
  content: '';
  position: absolute;
  width: 18px;
  height: 18px;
  left: 2px;
  bottom: 2px;
  background: var(--surface-input);
  border-radius: var(--radius-circle);
  transition: transform var(--transition-base);
  box-shadow: var(--shadow-sm);
}

.fn-toggle-switch input:checked + .fn-toggle-slider {
  background: var(--primary-color);
}

.fn-toggle-switch input:checked + .fn-toggle-slider::before {
  transform: translateX(18px);
}

/* Mini toggle for individual function cards */
.fn-toggle-switch-mini {
  width: 34px;
  height: 18px;
}

.fn-toggle-switch-mini .fn-toggle-slider::before {
  width: 14px;
  height: 14px;
}

.fn-toggle-switch-mini input:checked + .fn-toggle-slider::before {
  transform: translateX(16px);
}

/* --- Function Card (accordion) --- */
.fn-card {
  border-radius: var(--radius-md);
  border: 1px solid var(--settings-border-soft);
  transition: border-color var(--transition-fast);
  overflow: hidden;
}

.fn-card:hover {
  border-color: var(--settings-border-accent);
}

.fn-card.expanded {
  border-color: var(--settings-border-accent);
}

/* -- Accordion Header (always visible) -- */
.fn-card-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  cursor: pointer;
  user-select: none;
  background: var(--settings-surface-subtle);
  transition: background var(--transition-fast);
}

.fn-card-header:hover {
  background: var(--settings-accent-fill);
}

.fn-card-chevron {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-heading);
  line-height: 1;
  color: var(--text-secondary);
  transition: transform var(--transition-base);
  flex-shrink: 0;
  width: 18px;
  text-align: center;
}

.fn-card.expanded .fn-card-chevron {
  transform: rotate(90deg);
}

.fn-card-title {
  font-family: var(--font-mono);
  font-size: var(--text-body);
  font-weight: var(--weight-semibold);
  color: var(--settings-accent-text);
  letter-spacing: -0.2px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.fn-core-mechanics-badge {
  margin-left: auto;
  font-size: var(--text-caption);
  color: var(--settings-accent-text);
  background: var(--settings-accent-fill);
  border: 1px solid var(--settings-border-accent);
  border-radius: var(--radius-lg);
  padding: 1px 7px;
  line-height: 1.5;
}

/* -- Accordion Body (expandable) -- */
.fn-card-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.25s ease;
}

.fn-card.expanded .fn-card-body {
  max-height: 1200px;
  overflow-y: auto;
}

.fn-card-body-inner {
  padding: 10px 14px 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  border-top: 1px solid var(--settings-border-soft);
}

/* -- Field labels -- */
.fn-field-label {
  font-size: var(--text-caption);
  font-weight: var(--weight-semibold);
  color: var(--text-soft);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 2px;
}

/* -- Editable inputs -- */
.fn-name-input {
  width: 100%;
  font-family: var(--font-mono);
  font-size: var(--text-body);
  font-weight: var(--weight-semibold);
  color: var(--settings-accent-text);
  letter-spacing: -0.2px;
  border: 1px solid var(--settings-border-soft);
  border-radius: var(--radius-sm);
  background: var(--settings-surface-subtle);
  outline: none;
  padding: 5px 8px;
  transition: border-color var(--transition-fast);
}

.fn-name-input:focus {
  border-color: var(--settings-border-accent);
  background: var(--settings-surface-soft-strong);
}

/* 名称不合法时的红色提示 */
.fn-name-input.fn-name-invalid {
  border-color: var(--settings-danger-border);
  background: var(--settings-danger-fill);
}

.fn-name-input.fn-name-invalid:focus {
  border-color: var(--settings-danger-border);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--status-danger) 12%, transparent);
}

.fn-desc-textarea {
  width: 100%;
  font-size: var(--text-body-sm);
  line-height: 1.55;
  color: var(--text-secondary);
  border: 1px solid var(--overlay-8);
  border-radius: var(--radius-sm);
  background: var(--overlay-2);
  outline: none;
  padding: 5px 8px;
  resize: none;
  overflow: hidden;
  font-family: inherit;
  transition: border-color var(--transition-fast);
}

.fn-desc-textarea:focus {
  border-color: color-mix(in srgb, var(--brand-primary) 30%, transparent);
  background: var(--input-bg, white);
}

.fn-core-readonly-input {
  background: var(--overlay-4);
  color: var(--text-secondary);
}

.fn-core-readonly-input:focus {
  box-shadow: none;
}

/* -- Parameters display (read-only) -- */
.fn-params-content {
  font-size: var(--text-caption);
  line-height: 1.5;
  color: var(--text-secondary);
  background: var(--overlay-2);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  font-family: var(--font-mono);
  white-space: pre-wrap;
  word-break: break-word;
}

/* -- Content区域的布局 -- */
.fn-content-wrapper {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border-light);
}

.fn-content-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}

/* -- Content textarea -- */
.fn-content-textarea {
  width: 100%;
  min-height: 200px;
  max-height: 500px;
  font-family: var(--font-mono);
  font-size: var(--text-body-sm);
  line-height: 1.5;
  padding: 8px;
  border: 1px solid var(--border-light);
  background: var(--bg-secondary);
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  resize: vertical;
  transition:
    border-color 0.2s,
    box-shadow 0.2s;
}

.fn-content-textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--brand-primary) 10%, transparent);
}

.fn-core-world-mechanics-textarea {
  min-height: 220px;
  max-height: 520px;
}

/* -- 重置按键 -- */
.fn-content-reset-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--text-caption);
  padding: 4px 10px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-light);
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: var(--radius-xs);
  transition: all var(--transition-base);
}

.fn-content-reset-btn .material-symbols-outlined,
.fn-params-reset-btn .material-symbols-outlined {
  font-size: var(--text-title);
  line-height: 1;
}

.fn-content-reset-btn:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
  border-color: var(--border-medium);
}

.fn-content-reset-btn:active {
  transform: translateY(1px);
}

/* -- 滚动条样式 -- */
.fn-content-textarea::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

.fn-content-textarea::-webkit-scrollbar-track {
  background: var(--bg-tertiary);
}

.fn-content-textarea::-webkit-scrollbar-thumb {
  background: var(--border-medium);
  border-radius: var(--radius-xs);
}

.fn-content-textarea::-webkit-scrollbar-thumb:hover {
  background: var(--border-dark);
}

/* --- 删除按键（仅用于自定义 function 卡片） --- */
.fn-delete-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-left: auto;
  font-size: var(--text-heading);
  line-height: 1;
  padding: 2px 8px;
  border: 1px solid transparent;
  border-radius: var(--radius-xs);
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.fn-delete-btn:hover {
  color: var(--status-danger);
  background: color-mix(in srgb, var(--status-danger) 6%, transparent);
  border-color: color-mix(in srgb, var(--status-danger) 15%, transparent);
}

/* --- 已禁用卡片状态（toggle OFF）--- */
.fn-card.fn-card-deleted {
  opacity: 0.45;
  border-style: dashed;
  border-color: var(--overlay-10);
}

.fn-card.fn-card-deleted .fn-card-header {
  cursor: default;
}

.fn-card.fn-card-deleted .fn-card-title {
  text-decoration: line-through;
  color: var(--text-secondary);
}

.fn-card.fn-card-deleted .fn-card-chevron {
  visibility: hidden;
}

.fn-card.fn-card-deleted .fn-card-body {
  max-height: 0 !important;
}

/* --- Parameters Editor --- */
.fn-params-wrapper {
  margin-top: 4px;
}

.fn-params-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 4px;
}

.fn-params-actions {
  display: flex;
  gap: 6px;
}

.fn-params-toggle-btn,
.fn-params-reset-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--text-caption);
  padding: 2px 8px;
  border: 1px solid var(--overlay-10);
  border-radius: var(--radius-xs);
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.fn-params-toggle-btn:hover,
.fn-params-reset-btn:hover {
  background: color-mix(in srgb, var(--brand-primary) 6%, transparent);
  color: var(--primary-color);
  border-color: color-mix(in srgb, var(--brand-primary) 20%, transparent);
}

.fn-params-textarea {
  width: 100%;
  min-height: 120px;
  max-height: 400px;
  font-family: var(--font-mono);
  font-size: var(--text-caption);
  line-height: 1.5;
  padding: 8px;
  border: 1px solid var(--overlay-8);
  border-radius: var(--radius-sm);
  background: var(--overlay-2);
  color: var(--text-primary);
  resize: vertical;
  transition: border-color var(--transition-fast);
}

.fn-params-textarea:focus {
  outline: none;
  border-color: color-mix(in srgb, var(--brand-primary) 30%, transparent);
  background: var(--input-bg, white);
}

.fn-params-textarea.fn-params-invalid {
  border-color: color-mix(in srgb, var(--status-danger) 50%, transparent);
  background: color-mix(in srgb, var(--status-danger) 4%, transparent);
}

.fn-params-textarea.fn-params-invalid:focus {
  border-color: color-mix(in srgb, var(--status-danger) 60%, transparent);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--status-danger) 10%, transparent);
}

/* --- 自定义 function 卡片 --- */
.fn-card.fn-card-custom {
  border-color: color-mix(in srgb, var(--status-success) 20%, transparent);
}

.fn-card.fn-card-custom:hover {
  border-color: color-mix(in srgb, var(--status-success) 35%, transparent);
}

.fn-card-title-custom {
  color: var(--status-success) !important;
}

/* --- 新增 Function 按键 --- */
.fn-add-btn {
  width: 100%;
  padding: 10px;
  margin-top: 4px;
  font-size: var(--text-body);
  font-weight: var(--weight-medium);
  color: var(--primary-color);
  background: transparent;
  border: 2px dashed color-mix(in srgb, var(--brand-primary) 20%, transparent);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.fn-add-btn:hover {
  background: color-mix(in srgb, var(--brand-primary) 4%, transparent);
  border-color: color-mix(in srgb, var(--brand-primary) 40%, transparent);
}

.fn-add-btn:active {
  transform: translateY(1px);
}

/* ============================================
   Step 2 & Editor: Left Panel Sections
   ============================================ */
.step2-left-panel,
.editor-left-panel {
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.step2-section {
  display: flex;
  flex-direction: column;
}

.step2-section-grow {
  flex: 1;
  min-height: 0;
}

.step2-section-grow .step2-module-textarea {
  flex: 1;
  min-height: 80px;
}

.step2-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 4px;
}

.step2-section-title {
  font-size: var(--text-body);
  font-weight: var(--weight-semibold);
  color: var(--text-primary);
}

/* --- Section Help Button & Inline Content --- */
.section-help-btn {
  width: 20px;
  height: 20px;
  border-radius: var(--radius-circle);
  border: 1.5px solid var(--overlay-12);
  background: var(--overlay-4);
  color: var(--text-secondary);
  font-size: var(--text-body-sm);
  font-weight: var(--weight-bold);
  line-height: 1;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
  flex-shrink: 0;
  padding: 0;
  font-family: inherit;
  vertical-align: middle;
}

.section-help-btn:hover {
  border-color: color-mix(in srgb, var(--brand-primary) 40%, transparent);
  background: color-mix(in srgb, var(--brand-primary) 8%, transparent);
  color: var(--brand-primary);
}

.section-help-btn.active {
  border-color: color-mix(in srgb, var(--brand-primary) 50%, transparent);
  background: color-mix(in srgb, var(--brand-primary) 12%, transparent);
  color: var(--brand-primary);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--brand-primary) 8%, transparent);
}

.section-help-content {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition:
    max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1),
    opacity 0.25s ease,
    margin 0.3s ease,
    padding var(--transition-slow);
  background: color-mix(in srgb, var(--brand-primary) 4%, transparent);
  border-radius: var(--radius-xs);
  margin: 0;
  padding: 0 12px;
  border: 1px solid transparent;
}

.section-help-content.expanded {
  max-height: 500px;
  opacity: 1;
  margin: 8px 0;
  padding: 12px;
  border-color: color-mix(in srgb, var(--brand-primary) 10%, transparent);
}

.section-help-content p {
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--text-secondary);
  margin: 0 0 8px;
}

.section-help-content p:last-child {
  margin-bottom: 0;
}

.section-help-content p strong {
  color: var(--text-primary);
}

.section-help-content code {
  font-family: var(--font-mono);
  font-size: var(--text-caption);
  background: var(--overlay-5);
  padding: 1px 5px;
  border-radius: var(--radius-2xs);
  color: var(--primary-color);
}

/* Toggle info title row (for CoT toggle) */
.toggle-info-title-row {
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Dark mode overrides */
[data-theme='dark'] .section-help-btn {
  border-color: color-mix(in srgb, var(--text-invert) 15%, transparent);
  background: color-mix(in srgb, var(--text-invert) 5%, transparent);
  color: color-mix(in srgb, var(--text-invert) 50%, transparent);
}

[data-theme='dark'] .section-help-btn:hover {
  border-color: color-mix(in srgb, var(--brand-primary) 50%, transparent);
  background: color-mix(in srgb, var(--brand-primary) 15%, transparent);
  color: color-mix(in srgb, var(--brand-primary) 72%, var(--text-invert));
}

[data-theme='dark'] .section-help-btn.active {
  border-color: color-mix(in srgb, var(--brand-primary) 60%, transparent);
  background: color-mix(in srgb, var(--brand-primary) 20%, transparent);
  color: color-mix(in srgb, var(--brand-primary) 72%, var(--text-invert));
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--brand-primary) 10%, transparent);
}

[data-theme='dark'] .section-help-content {
  background: color-mix(in srgb, var(--brand-primary) 6%, transparent);
}

[data-theme='dark'] .section-help-content.expanded {
  border-color: color-mix(in srgb, var(--brand-primary) 15%, transparent);
}

[data-theme='dark'] .section-help-content p {
  color: color-mix(in srgb, var(--text-invert) 60%, transparent);
}

[data-theme='dark'] .section-help-content p strong {
  color: color-mix(in srgb, var(--text-invert) 85%, transparent);
}

[data-theme='dark'] .section-help-content code {
  background: color-mix(in srgb, var(--text-invert) 8%, transparent);
  color: color-mix(in srgb, var(--brand-purple) 65%, var(--text-invert));
}

.step2-module-textarea {
  width: 100%;
  min-height: 120px;
  max-height: 400px;
  font-family: var(--font-mono);
  font-size: var(--text-body-sm);
  line-height: 1.5;
  padding: 8px;
  border: 1px solid var(--overlay-8);
  border-radius: var(--radius-sm);
  background: var(--overlay-2);
  color: var(--text-primary);
  resize: none;
  overflow: hidden;
  margin-top: 6px;
  transition: border-color var(--transition-fast);
}

.step2-module-textarea:focus {
  outline: none;
  border-color: color-mix(in srgb, var(--brand-primary) 30%, transparent);
  background: var(--input-bg, white);
}

/* Step2 Prompt Editor (right column) - aliases */
.step2-prompt-column {
  display: flex;
  flex-direction: column;
}

.step2-prompt-group {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  padding: 16px 20px;
}

.step2-prompt-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 4px;
}

.step2-prompt-header label {
  font-size: var(--text-body);
  font-weight: var(--weight-semibold);
  color: var(--text-primary);
}

.step2-prompt-textarea {
  flex: 1;
  min-height: 300px;
  resize: vertical;
}

/* ============================================
   Step 3: Schema Editor (left column)
   ============================================ */
.step3-left-panel {
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* --- Disabled group (e.g. choices toggle OFF) --- */
.schema-group-disabled .fn-group-header {
  opacity: 0.5;
}

.schema-group-disabled .fn-group-title {
  text-decoration: line-through;
}

/* --- Schema Editor Container --- */
#step3-schema-editor {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* --- Schema Group (reuse fn-group, add monospace title) --- */
.schema-group-title {
  font-family: var(--font-mono);
  font-size: var(--text-body);
}

/* --- Field Card (single schema field) --- */
.schema-field-card {
  border-radius: var(--radius-sm);
  border: 1px solid var(--overlay-6);
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.schema-field-card:hover {
  border-color: color-mix(in srgb, var(--brand-primary) 15%, transparent);
}

.schema-field-card.expanded {
  border-color: color-mix(in srgb, var(--brand-primary) 20%, transparent);
}

.schema-field-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  cursor: pointer;
  user-select: none;
  background: var(--overlay-2);
  transition: background var(--transition-fast);
}

.schema-field-header:hover {
  background: color-mix(in srgb, var(--brand-primary) 4%, transparent);
}

.schema-field-chevron {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  transition: transform var(--transition-base);
  flex-shrink: 0;
  width: 12px;
  text-align: center;
}

.schema-field-card.expanded .schema-field-chevron {
  transform: rotate(90deg);
}

.schema-field-name {
  font-family: var(--font-mono);
  font-size: var(--text-body-sm);
  font-weight: var(--weight-semibold);
  color: var(--primary-color);
  letter-spacing: -0.2px;
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.schema-field-type-badge {
  font-size: var(--text-sm);
  padding: 1px 6px;
  background: color-mix(in srgb, var(--brand-primary) 8%, transparent);
  color: var(--primary-color);
  border-radius: var(--radius-xs);
  font-family: var(--font-mono);
  flex-shrink: 0;
}

.schema-field-delete-btn {
  width: 18px;
  height: 18px;
  border: none;
  background: color-mix(in srgb, var(--status-danger) 8%, transparent);
  color: var(--status-danger);
  border-radius: var(--radius-xs);
  cursor: pointer;
  font-size: var(--text-caption);
  line-height: 18px;
  text-align: center;
  flex-shrink: 0;
  opacity: 0;
  transition:
    opacity 0.15s ease,
    background var(--transition-fast);
}

.schema-field-header:hover .schema-field-delete-btn,
.schema-subobj-header:hover .schema-field-delete-btn {
  opacity: 1;
}

.schema-field-delete-btn:hover {
  background: color-mix(in srgb, var(--status-danger) 20%, transparent);
}

/* --- Field Body (expandable) --- */
.schema-field-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.25s ease;
}

.schema-field-card.expanded .schema-field-body {
  max-height: 600px;
  overflow-y: auto;
}

.schema-field-body-inner {
  padding: 10px 12px 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  border-top: 1px solid var(--overlay-5);
}

/* --- Field Edit Row --- */
.schema-field-row {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.schema-field-row label {
  font-size: 10.5px;
  font-weight: var(--weight-semibold);
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

.schema-field-row select,
.schema-field-row input[type='text'] {
  width: 100%;
  padding: 5px 8px;
  border: 1px solid var(--overlay-8);
  border-radius: var(--radius-xs);
  font-size: var(--text-body-sm);
  font-family: var(--font-mono);
  background: var(--overlay-2);
  color: var(--text-primary);
  transition: border-color var(--transition-fast);
}

.schema-field-row select:focus,
.schema-field-row input[type='text']:focus {
  outline: none;
  border-color: color-mix(in srgb, var(--brand-primary) 30%, transparent);
  background: var(--input-bg, white);
}

.schema-field-row textarea {
  width: 100%;
  padding: 5px 8px;
  border: 1px solid var(--overlay-8);
  border-radius: var(--radius-xs);
  font-size: var(--text-caption);
  font-family: var(--font-mono);
  background: var(--overlay-2);
  color: var(--text-primary);
  resize: vertical;
  min-height: 40px;
  line-height: 1.5;
  transition: border-color var(--transition-fast);
}

.schema-field-row textarea:focus {
  outline: none;
  border-color: color-mix(in srgb, var(--brand-primary) 30%, transparent);
  background: var(--input-bg, white);
}

/* --- Enum Editor --- */
.schema-enum-editor {
  background: color-mix(in srgb, var(--brand-primary) 2%, transparent);
  padding: 8px;
  border-radius: var(--radius-xs);
  border: 1px solid color-mix(in srgb, var(--brand-primary) 8%, transparent);
}

.schema-enum-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-top: 4px;
}

.schema-enum-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  background: color-mix(in srgb, var(--brand-primary) 8%, transparent);
  border: 1px solid color-mix(in srgb, var(--brand-primary) 15%, transparent);
  border-radius: var(--radius-lg);
  font-size: var(--text-caption);
  font-family: var(--font-mono);
  color: var(--text-primary);
  max-width: 200px;
  word-break: break-all;
}

.schema-enum-tag-remove {
  border: none;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: var(--text-body-sm);
  line-height: 1;
  padding: 0 1px;
  border-radius: var(--radius-circle);
  transition: all 0.12s ease;
  flex-shrink: 0;
}

.schema-enum-tag-remove:hover {
  color: var(--status-danger);
  background: color-mix(in srgb, var(--status-danger) 10%, transparent);
}

.schema-enum-input {
  flex: 1;
  min-width: 80px;
  border: none;
  outline: none;
  background: transparent;
  font-size: var(--text-caption);
  font-family: var(--font-mono);
  color: var(--text-primary);
  padding: 2px 4px;
}

.schema-enum-input::placeholder {
  color: var(--text-secondary);
  font-family: var(--font-ui);
}

/* --- Required Checkbox --- */
.schema-field-required-row {
  display: flex;
  align-items: center;
  gap: 6px;
}

.schema-field-required-row label {
  text-transform: none;
  font-size: var(--text-caption);
  cursor: pointer;
}

/* --- Sub-Object Card (for panel_status children) --- */
.schema-subobj-card {
  border: 1px solid color-mix(in srgb, var(--status-success) 20%, transparent);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.schema-subobj-card:hover {
  border-color: color-mix(in srgb, var(--status-success) 35%, transparent);
}

.schema-subobj-card.expanded {
  border-color: color-mix(in srgb, var(--status-success) 30%, transparent);
}

.schema-subobj-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: color-mix(in srgb, var(--status-success) 4%, transparent);
  cursor: pointer;
  user-select: none;
  transition: background var(--transition-fast);
}

.schema-subobj-header:hover {
  background: color-mix(in srgb, var(--status-success) 8%, transparent);
}

.schema-subobj-name {
  font-family: var(--font-mono);
  font-size: var(--text-body-sm);
  font-weight: var(--weight-semibold);
  color: var(--status-success);
  flex: 1;
}

.schema-subobj-count {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  background: var(--overlay-4);
  border-radius: var(--radius-lg);
  padding: 1px 7px;
}

.schema-subobj-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.25s ease;
}

.schema-subobj-card.expanded .fn-group-chevron {
  transform: rotate(90deg);
}

.schema-subobj-card.expanded .schema-subobj-body {
  max-height: 3000px;
  overflow-y: auto;
}

.schema-subobj-body-inner {
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  border-top: 1px solid color-mix(in srgb, var(--status-success) 10%, transparent);
}

/* --- Group / Sub-object Description Textarea --- */
.schema-desc-textarea {
  width: 100%;
  font-size: var(--text-caption);
  line-height: 1.5;
  padding: 5px 8px;
  margin-bottom: 6px;
  border: 1px solid var(--overlay-6);
  border-radius: var(--radius-xs);
  background: var(--overlay-2);
  color: var(--text-secondary);
  resize: vertical;
  min-height: 24px;
  font-family: var(--font-ui);
  transition:
    border-color 0.15s ease,
    background var(--transition-fast);
}

.schema-desc-textarea:focus {
  outline: none;
  border-color: color-mix(in srgb, var(--brand-primary) 30%, transparent);
  background: var(--input-bg, white);
  color: var(--text-primary);
}

.schema-desc-label {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-bottom: 2px;
  font-weight: var(--weight-medium);
}

/* --- Add Field Button --- */
.schema-add-field-btn {
  width: 100%;
  padding: 5px;
  margin-top: 4px;
  border: 1px dashed var(--overlay-15);
  background: transparent;
  color: var(--text-secondary);
  border-radius: var(--radius-xs);
  cursor: pointer;
  font-size: var(--text-caption);
  transition: all var(--transition-fast);
}

.schema-add-field-btn:hover {
  border-color: color-mix(in srgb, var(--brand-primary) 30%, transparent);
  background: color-mix(in srgb, var(--brand-primary) 3%, transparent);
  color: var(--primary-color);
}

/* --- JSON Textarea fallback (for complex types) --- */
.schema-json-textarea {
  width: 100%;
  min-height: 80px;
  max-height: 300px;
  font-family: var(--font-mono);
  font-size: var(--text-caption);
  line-height: 1.5;
  padding: 8px;
  border: 1px solid var(--overlay-8);
  border-radius: var(--radius-xs);
  background: var(--overlay-2);
  color: var(--text-primary);
  resize: vertical;
  transition: border-color var(--transition-fast);
}

.schema-json-textarea:focus {
  outline: none;
  border-color: color-mix(in srgb, var(--brand-primary) 30%, transparent);
  background: var(--input-bg, white);
}

.schema-json-textarea.schema-json-invalid {
  border-color: color-mix(in srgb, var(--status-danger) 50%, transparent);
  background: color-mix(in srgb, var(--status-danger) 4%, transparent);
}

/* ============================================
   Mobile Responsive
   ============================================ */
@media (max-width: 640px) {
  /* Step1 & API & Prompts & Step3: left column border off on mobile (stacked) */
  #tab-step1 .settings-left-column,
  #tab-api .settings-left-column,
  #tab-prompts .settings-left-column,
  #tab-step3 .settings-left-column {
    border-right: none;
  }

  /* Step1 mobile */
  .step1-functions-panel {
    padding: 12px;
    gap: 12px;
  }

  .fn-group-header {
    padding: 8px 10px;
  }

  .fn-group.fn-group-expanded .fn-group-body {
    padding: 6px 8px 8px;
    gap: 6px;
  }

  .fn-params-textarea {
    min-height: 80px;
    font-size: var(--text-caption);
  }

  .fn-card {
    padding: 10px 12px;
  }

  .fn-name {
    font-size: var(--text-body-sm);
  }

  .fn-desc {
    font-size: var(--text-body-sm);
  }

  /* Step2 & Editor & Step3 mobile */
  .step2-left-panel,
  .editor-left-panel,
  .step3-left-panel {
    padding: 12px;
    gap: 10px;
  }

  .step2-module-textarea {
    min-height: 80px;
    font-size: var(--text-caption);
  }

  /* Shared: prompt group mobile */
  .step1-prompt-group,
  .step2-prompt-group {
    padding: 12px;
  }
}

/* Content textarea mobile */
@media (max-width: 1150px) {
  .fn-content-textarea {
    min-height: 150px;
    font-size: var(--text-caption);
  }
}

/* ============================================
   Step Input Parts Preview (右侧栏)
   ============================================ */
.step-preview-column {
  display: flex;
  flex-direction: column;
}

.step-preview-panel {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  padding: 16px 20px;
  overflow-y: auto;
}

.step-preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
  flex-shrink: 0;
}

.step-preview-title {
  font-size: var(--text-body);
  font-weight: var(--weight-semibold);
  color: var(--text-primary);
}

.step-preview-badge {
  font-size: var(--text-caption);
  color: var(--text-secondary);
  background: var(--overlay-5);
  border-radius: var(--radius-lg);
  padding: 1px 8px;
  font-weight: var(--weight-medium);
}

.step-preview-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

/* --- Part Group (折叠组) --- */
.preview-group {
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.preview-group + .preview-group {
  margin-top: 10px;
}

.preview-group-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  cursor: pointer;
  user-select: none;
  border-radius: var(--radius-md);
  transition: background var(--transition-fast);
}

.preview-group-header:hover {
  background: var(--overlay-4);
}

.preview-group-chevron {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-heading);
  line-height: 1;
  color: var(--text-secondary);
  transition: transform var(--transition-base);
  flex-shrink: 0;
  width: 18px;
  text-align: center;
}

.preview-group.expanded .preview-group-chevron {
  transform: rotate(90deg);
}

.preview-group-title {
  font-size: var(--text-body-sm);
  font-weight: var(--weight-semibold);
  color: var(--text-secondary);
  flex: 1;
}

.preview-group-badge {
  font-size: var(--text-caption);
  color: var(--text-secondary);
  background: var(--overlay-5);
  border-radius: var(--radius-lg);
  padding: 1px 8px;
  font-weight: var(--weight-medium);
  min-width: 18px;
  text-align: center;
}

/* 系统提示词组样式 */
.preview-group[data-group='system'] .preview-group-title {
  color: var(--text-secondary);
}

/* 组体折叠动画 */
.preview-group-body {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 0;
  overflow: hidden;
  transition:
    max-height 0.3s ease,
    padding var(--transition-slow);
  padding: 0 4px;
}

.preview-group.expanded .preview-group-body {
  max-height: 2000px;
  padding: 6px 4px 4px;
  overflow-y: auto;
}

/* --- Part Card --- */
.preview-part-card {
  border: 1px solid var(--overlay-6);
  border-radius: var(--radius-md);
  overflow: hidden;
  border-left: 3px solid var(--text-soft);
}

.preview-part-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  cursor: pointer;
  user-select: none;
  background: var(--overlay-2);
  transition: background var(--transition-fast);
}

.preview-part-header:hover {
  background: color-mix(in srgb, var(--brand-primary) 4%, transparent);
}

.preview-part-chevron {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-heading);
  line-height: 1;
  color: var(--text-secondary);
  transition: transform var(--transition-base);
  flex-shrink: 0;
  width: 18px;
  text-align: center;
}

.preview-part-card.expanded .preview-part-chevron {
  transform: rotate(90deg);
}

.preview-part-label {
  font-size: var(--text-body-sm);
  font-weight: var(--weight-medium);
  color: var(--text-primary);
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.preview-part-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.preview-part-tag {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  padding: 1px 6px;
  border-radius: var(--radius-xs);
  line-height: 1.4;
}

.preview-part-tag.tag-dynamic {
  color: var(--brand-primary);
  background: color-mix(in srgb, var(--brand-primary) 10%, transparent);
}

.preview-part-tag.tag-configurable {
  color: var(--brand-secondary);
  background: color-mix(in srgb, var(--brand-secondary) 10%, transparent);
}

.preview-part-tag.tag-fixed {
  color: var(--text-secondary);
  background: var(--overlay-5);
}

.preview-part-size {
  font-size: var(--text-caption);
  color: var(--text-secondary);
  font-weight: var(--weight-normal);
}

/* Condition line */
.preview-part-condition {
  font-size: var(--text-caption);
  color: var(--text-secondary);
  padding: 0 12px 6px 32px;
  background: var(--overlay-2);
}

/* Collapsible body */
.preview-part-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.25s ease;
}

.preview-part-card.expanded .preview-part-body {
  max-height: 500px;
  overflow-y: auto;
}

.preview-part-content {
  padding: 10px 12px;
  border-top: 1px solid var(--overlay-5);
  font-family: var(--font-mono);
  font-size: var(--text-caption);
  line-height: 1.5;
  color: var(--text-primary);
  white-space: pre-wrap;
  word-break: break-word;
  background: var(--overlay-2);
}

.preview-part-content.dynamic-hint {
  font-family: inherit;
  font-style: italic;
  color: var(--text-secondary);
}

/* Color-coded left borders by type */
.preview-part-card[data-type='dynamic'] {
  border-left-color: var(--brand-primary);
}

.preview-part-card[data-type='configurable'] {
  border-left-color: var(--brand-secondary);
}

.preview-part-card[data-type='fixed'] {
  border-left-color: var(--text-soft);
}

/* Mobile */
@media (max-width: 640px) {
  .step-preview-panel {
    padding: 12px;
  }

  .preview-part-content {
    font-size: var(--text-caption);
  }

  .preview-part-condition {
    padding-left: 20px;
  }
}

/* =========================================================
   Settings Modal Visual (aligned with Save Manager style)
   ========================================================= */
#settings-modal .settings-modal-wide {
  width: 75vw !important;
  max-width: 75vw !important;
  max-height: min(90vh, 920px);
  border-radius: var(--radius-xl);
  padding: 0 !important;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  box-shadow: 0 18px 48px var(--overlay-20);
}

#settings-modal .settings-header {
  display: grid !important;
  grid-template-columns: clamp(160px, 18vw, 188px) minmax(300px, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 18px 22px;
  border-bottom: 1px solid var(--border-color);
  background: color-mix(in srgb, var(--input-bg) 92%, transparent);
  flex-shrink: 0;
  margin: 0 !important;
}

#settings-modal .settings-title-block {
  min-width: 0;
  padding-right: 14px;
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex-shrink: 0;
}

#settings-modal .settings-header .settings-title {
  margin: 0;
  font-size: 34px;
  line-height: 1.1;
  font-weight: var(--weight-extrabold);
  color: var(--text-color);
}

#settings-modal .settings-subtitle {
  margin: 0;
  font-size: var(--text-caption);
  letter-spacing: 0.12em;
  color: var(--text-secondary);
}

#settings-modal .settings-tabs {
  position: relative;
  width: min(100%, 360px);
  justify-self: center;
  min-width: 0;
  display: flex;
  align-items: stretch;
  height: 42px;
  gap: 0;
  padding: 2px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--input-bg) 88%, transparent);
  overflow: hidden;
}

#settings-modal .settings-tab {
  position: relative;
  z-index: 1;
  flex: 1 1 0;
  border: none;
  border-radius: var(--radius-xs);
  padding: 0 12px;
  margin: 0;
  background: transparent;
  color: var(--text-secondary);
  font-size: var(--text-body-sm);
  font-weight: var(--weight-bold);
  line-height: 1.2;
  white-space: nowrap;
  transition: color var(--transition-base);
}

#settings-modal .settings-tab-mobile-first {
  display: none;
}

#settings-modal .settings-tab:hover:not(.active) {
  color: var(--text-color);
}

#settings-modal .settings-tab.active {
  color: var(--text-on-accent);
  background: transparent;
  box-shadow: none;
}

#settings-modal .settings-tabs-slider {
  position: absolute;
  top: 2px;
  left: 0;
  width: 33.3333%;
  height: calc(100% - 4px);
  border-radius: var(--radius-xs);
  background: linear-gradient(
    135deg,
    color-mix(in srgb, var(--primary-color) 94%, var(--text-invert) 6%) 0%,
    var(--primary-color) 100%
  );
  box-shadow: 0 4px 12px color-mix(in srgb, var(--primary-color) 34%, transparent);
  transition:
    transform 0.3s cubic-bezier(0.4, 0, 0.2, 1),
    width var(--transition-base);
  pointer-events: none;
  will-change: transform, width;
}

#settings-modal .settings-header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  justify-self: end;
  flex-shrink: 0;
}

#settings-modal .settings-header-mini-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

#settings-modal .settings-toolbar-cancel-btn,
#settings-modal .settings-toolbar-confirm-btn {
  height: 40px;
  border-radius: var(--radius-sm);
  padding: 0 18px;
  border: 1px solid transparent;
  font-size: var(--text-body);
  font-weight: var(--weight-bold);
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition-base);
}

#settings-modal .settings-toolbar-cancel-btn {
  color: var(--text-secondary);
  background: transparent;
  border-color: transparent;
}

#settings-modal .settings-toolbar-cancel-btn:hover {
  color: var(--text-color);
  border-color: var(--border-color);
  background: color-mix(in srgb, var(--input-bg) 78%, transparent);
}

#settings-modal .settings-toolbar-confirm-btn {
  color: var(--text-on-accent);
  background: var(--primary-color);
  border-color: color-mix(in srgb, var(--primary-color) 75%, var(--surface-code));
  box-shadow: 0 6px 16px color-mix(in srgb, var(--primary-color) 35%, transparent);
}

#settings-modal .settings-toolbar-confirm-btn:hover {
  filter: brightness(0.95);
  transform: translateY(-1px);
}

#settings-modal .settings-header-divider {
  width: 1px;
  height: 24px;
  background: var(--border-color);
}

#settings-modal .settings-theme-btn,
#settings-modal .settings-language-btn {
  height: 36px;
  min-width: 36px;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border-color);
  background: var(--bg-color);
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-base);
}

#settings-modal .settings-theme-btn {
  width: 36px;
  padding: 0;
}

#settings-modal .settings-theme-btn .material-symbols-outlined {
  font-size: var(--text-display);
}

#settings-modal .settings-language-btn {
  padding: 0 10px;
  font-size: var(--text-subtitle);
  font-weight: var(--weight-extrabold);
  line-height: 1;
}

#settings-modal .settings-theme-btn:hover,
#settings-modal .settings-language-btn:hover {
  color: var(--text-color);
  border-color: color-mix(in srgb, var(--primary-color) 45%, var(--border-color));
  background: color-mix(in srgb, var(--primary-color) 8%, transparent);
}

#settings-modal .settings-theme-btn[aria-pressed='true'] {
  color: var(--text-on-accent);
  border-color: color-mix(in srgb, var(--primary-color) 68%, var(--border-color));
  background: var(--primary-color);
  box-shadow: 0 4px 12px color-mix(in srgb, var(--primary-color) 32%, transparent);
}

@media (min-width: 901px) and (max-width: 1140px) {
  #settings-modal .settings-header {
    grid-template-columns: clamp(118px, 14vw, 150px) minmax(160px, 1fr) auto;
    gap: 8px;
    padding: 14px;
  }

  #settings-modal .settings-title-block {
    padding-right: 10px;
  }

  #settings-modal .settings-header .settings-title {
    font-size: 30px;
  }

  #settings-modal .settings-subtitle {
    font-size: var(--text-2xs);
    letter-spacing: 0.08em;
  }

  #settings-modal .settings-tabs {
    width: min(100%, 320px);
    height: 38px;
  }

  #settings-modal .settings-tab {
    padding: 0 8px;
    font-size: var(--text-caption);
  }

  #settings-modal .settings-header-actions {
    gap: 6px;
  }

  #settings-modal .settings-header-mini-actions {
    gap: 6px;
  }

  #settings-modal .settings-toolbar-cancel-btn,
  #settings-modal .settings-toolbar-confirm-btn {
    height: 36px;
    padding: 0 10px;
    font-size: var(--text-body-sm);
    border-radius: var(--radius-xs);
  }

  #settings-modal .settings-theme-btn,
  #settings-modal .settings-language-btn {
    min-width: 32px;
    height: 32px;
    border-radius: var(--radius-xs);
  }

  #settings-modal .settings-theme-btn {
    width: 32px;
  }

  #settings-modal .settings-theme-btn .material-symbols-outlined {
    font-size: var(--text-heading);
  }

  #settings-modal .settings-language-btn {
    padding: 0 8px;
    font-size: var(--text-body-lg);
  }

  #settings-modal .settings-header-divider {
    display: none;
  }
}

#settings-modal .settings-body {
  flex: 1;
  min-height: 0;
  overflow: auto;
  padding: 18px;
  background: color-mix(in srgb, var(--input-bg) 32%, var(--bg-color));
}

#settings-modal .settings-tab-content {
  display: none !important;
  height: auto;
}

#settings-modal .settings-tab-content.active {
  display: block !important;
}

#settings-modal .settings-two-column {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  min-height: 100%;
}

#settings-modal .settings-left-column {
  flex: 1;
  min-width: 0;
  overflow: auto;
  border-right: none;
}

#settings-modal .settings-right-column {
  width: min(420px, 40%);
  min-width: 280px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding-top: 0;
}

/* 基础设置页：单列堆叠 */
#settings-modal .settings-basic-column {
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-width: 0;
}

#settings-modal .settings-account-section {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* API 设置页：左 50% / 右 50% */
#settings-modal #tab-api .settings-left-column {
  width: auto;
  min-width: 0;
  flex: 1 1 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

#settings-modal #tab-api .settings-right-column {
  width: auto;
  min-width: 0;
  flex: 1 1 0;
}

/* 提示词设置页：左 50% / 右 50% */
#settings-modal #tab-prompts .settings-left-column {
  width: auto;
  min-width: 0;
  flex: 1 1 0;
  padding-top: 0;
  padding-right: 10px;
}

#settings-modal #tab-prompts .settings-right-column {
  width: auto;
  min-width: 0;
  flex: 1 1 0;
  padding-top: 0;
  padding-left: 10px;
}

#settings-modal #tab-prompts .settings-two-column {
  gap: 0; /* use padding for the gap so the border looks centered */
}

/* Remove internal paddings that artificially shrink cards and increase global gap */
#settings-modal #tab-prompts .step2-left-panel,
#settings-modal #tab-prompts .step-prompt-group {
  padding: 0;
}

#settings-modal .module-config-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 0;
}

#settings-modal .module-config-item {
  display: block;
  border: 1px solid var(--settings-border-soft);
  border-radius: var(--radius-sm);
  background: var(--settings-surface-subtle);
  padding: 16px;
  box-shadow: 0 4px 12px var(--overlay-4);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all var(--transition-base);
}

#settings-modal .module-config-item:hover {
  border-color: var(--settings-border-accent);
  box-shadow: 0 6px 18px var(--overlay-5);
  background: color-mix(in srgb, var(--settings-surface-subtle) 95%, var(--primary-color) 2%);
}

#settings-modal .module-config-item > .module-label,
#settings-modal .module-config-item > .module-config-header > .module-label {
  display: block;
  width: auto;
  margin: 0 0 10px;
  font-size: var(--text-subtitle);
  font-weight: var(--weight-bold);
  color: var(--text-color);
  line-height: 1.25;
}

#settings-modal .module-config-item > .module-label br,
#settings-modal .module-config-item > .module-config-header > .module-label br {
  display: none;
}

#settings-modal .module-config-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
  margin: 0 0 10px;
}

#settings-modal .module-config-item > .module-config-header > .module-label {
  margin: 0;
  flex: 1;
  min-width: 0;
}

#settings-modal .module-config-column {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

#settings-modal .module-config-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  align-items: center;
}

#settings-modal .module-config-row > .module-provider-select,
#settings-modal .module-config-row > .module-model-control > .module-model-select,
#settings-modal .module-model-input {
  width: 100% !important;
  min-width: 0;
  height: 40px !important;
  min-height: 40px !important;
  box-sizing: border-box;
  padding: 0 32px 0 12px !important;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xs);
  background: color-mix(in srgb, var(--input-bg) 88%, transparent);
  color: var(--text-color);
  font-size: var(--text-body) !important;
  line-height: 40px !important;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
}

#settings-modal .module-config-row > .module-provider-select,
#settings-modal .module-config-row > .module-model-control > .module-model-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23888' d='M1.4 0L6 4.6 10.6 0 12 1.4l-6 6-6-6z'/%3E%3C/svg%3E"); /* ui-lint-allow */
  background-repeat: no-repeat;
  background-position: right 10px center;
  background-size: 12px 8px;
}

#settings-modal .module-model-input {
  padding: 0 12px !important;
}

#settings-modal .module-model-control {
  width: 100%;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

#settings-modal .module-model-input.is-hidden {
  display: none;
}

#settings-modal .module-price-row {
  display: block;
  opacity: 1;
}

#settings-modal .module-price-cell {
  min-width: 0;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
}

#settings-modal .module-price-main {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  width: 100%;
  flex-wrap: nowrap;
}

#settings-modal .module-price-row .price-info {
  display: inline-block;
  max-width: 100%;
  font-family: var(--font-mono);
  font-size: var(--text-body-sm);
  color: var(--text-invert);
  background: color-mix(in srgb, var(--brand-primary) 76%, var(--text-primary));
  border-radius: var(--radius-pill);
  padding: 4px 10px;
  overflow: visible;
  text-overflow: clip;
  white-space: normal;
  line-height: 1.35;
}

#settings-modal .module-price-row .price-value {
  color: inherit;
  opacity: 1;
}

#settings-modal .module-price-actions {
  display: inline-flex;
  align-items: center;
  justify-content: flex-start;
  gap: 6px;
  margin-left: 0;
  flex-shrink: 0;
}

#settings-modal .module-price-controls {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 8px;
  flex-wrap: nowrap;
  min-width: 0;
  width: 100%;
  margin-left: 0;
  flex: 0 0 100%;
}

#settings-modal .module-price-flat-btn {
  min-height: 36px;
  padding: 0 12px;
  border: 1px solid var(--settings-border-soft);
  border-radius: var(--radius-xs);
  background: color-mix(in srgb, var(--input-bg) 86%, transparent);
  color: var(--text-color);
  font-size: var(--text-caption);
  line-height: 1.2;
  box-shadow: none;
  cursor: pointer;
  transition:
    background 0.15s ease,
    border-color 0.15s ease,
    color var(--transition-fast);
}

#settings-modal .module-price-flat-btn:hover:not(:disabled) {
  border-color: color-mix(in srgb, var(--primary-color) 42%, var(--border-color));
  background: color-mix(in srgb, var(--primary-color) 10%, var(--input-bg) 90%);
}

#settings-modal .module-price-flat-btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

#settings-modal .module-price-editor {
  display: none;
  align-items: center;
  gap: 6px;
  min-width: 0;
  flex: 0 0 auto;
}

#settings-modal .module-price-row.is-editing .module-price-editor {
  display: inline-flex;
}

#settings-modal .module-price-row.is-editing .module-price-cell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  column-gap: 8px;
  row-gap: 6px;
}

#settings-modal .module-price-row.is-editing .module-price-main {
  grid-column: 1 / -1;
}

#settings-modal .module-price-row.is-editing .module-price-editor {
  grid-column: 1;
  grid-row: 2;
  justify-self: start;
  min-width: 0;
}

#settings-modal .module-price-row.is-editing .module-price-controls {
  grid-column: 2;
  grid-row: 2;
  justify-self: end;
  width: auto;
  justify-content: flex-end;
  margin-left: 0;
}

#settings-modal .module-price-row.is-editing .price-info {
  opacity: 0.7;
}

#settings-modal .module-price-edit-input {
  width: 48px !important;
  max-width: 48px !important;
  min-width: 48px !important;
  height: 28px;
  padding: 0 8px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xs);
  background: color-mix(in srgb, var(--input-bg) 92%, transparent);
  color: var(--text-color);
  font-size: var(--text-caption);
}

#settings-modal .module-price-edit-sep,
#settings-modal .module-price-edit-unit {
  font-family: var(--font-mono);
  font-size: var(--text-caption);
  color: var(--text-secondary);
  white-space: nowrap;
}

#settings-modal .module-price-row .temp-label {
  margin-left: 0;
  text-align: right;
  text-transform: none;
  font-size: var(--text-body-sm);
  color: var(--text-secondary);
  white-space: nowrap;
}

#settings-modal .module-price-controls .module-temp-input {
  width: 78px !important;
  max-width: 78px !important;
  min-width: 78px !important;
  height: 34px;
  padding: 0 10px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xs);
  background: color-mix(in srgb, var(--input-bg) 88%, transparent);
  color: var(--text-color);
  font-size: var(--text-body);
}

#settings-modal .module-streaming-inline {
  display: inline-flex;
  align-items: center;
  justify-self: end;
  gap: 8px;
  margin: 0;
}

#settings-modal .module-streaming-top-right {
  margin-left: auto;
  flex-shrink: 0;
}

#settings-modal .module-streaming-label {
  font-size: var(--text-body-sm);
  color: var(--text-secondary);
  white-space: nowrap;
}

#settings-modal .module-streaming-inline .toggle-switch {
  flex-shrink: 0;
}

#settings-modal #tab-basic .settings-basic-column .form-group,
#settings-modal #tab-basic .settings-basic-column .settings-toggle-group,
#settings-modal #tab-basic .settings-basic-column .settings-global-io,
#settings-modal #tab-api .settings-left-column .form-group,
#settings-modal #tab-api .settings-right-column .form-group,
#settings-modal #tab-api .settings-left-column .settings-toggle-group,
#settings-modal #tab-api .settings-right-column .settings-toggle-group,
#settings-modal #tab-api .settings-left-column .settings-global-io,
#settings-modal #tab-api .settings-right-column .settings-global-io {
  border: 1px solid var(--settings-border-soft);
  border-radius: var(--radius-sm);
  background: var(--settings-surface-subtle);
  padding: 16px;
  margin: 0;
  box-shadow: 0 4px 12px var(--overlay-4);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

#settings-modal #tab-basic .settings-basic-column .form-label,
#settings-modal #tab-api .settings-left-column .form-label,
#settings-modal #tab-api .settings-right-column .form-label {
  display: block;
  margin: 0 0 12px;
  font-size: var(--text-subtitle);
  font-weight: var(--weight-bold);
  color: var(--text-color);
}

#settings-modal .ui-scale-settings-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

#settings-modal .ui-scale-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: nowrap;
  gap: 10px;
}

#settings-modal .ui-scale-header-row > .form-label {
  margin: 0;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  line-height: 1.25;
  padding: 1px 0 0 2px;
}

#settings-modal .ui-scale-header-actions {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  min-width: 0;
}

#settings-modal .ui-scale-default-btn {
  min-height: 34px;
  padding: 6px 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--input-bg) 88%, transparent);
  color: var(--text-color);
  font-size: var(--text-body-sm);
  cursor: pointer;
  transition: all var(--transition-base);
}

#settings-modal .ui-scale-default-btn:hover:not(:disabled) {
  border-color: color-mix(in srgb, var(--primary-color) 45%, var(--border-color));
  background: color-mix(in srgb, var(--primary-color) 10%, var(--input-bg) 90%);
}

#settings-modal .ui-scale-default-btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

#settings-modal .ui-scale-slider-row {
  display: block;
}

#settings-modal .ui-scale-slider-row input[type='range'] {
  width: 100%;
  min-width: 0;
  accent-color: var(--primary-color);
}

#settings-modal .ui-scale-value {
  font-family: var(--font-mono);
  font-size: var(--text-body-sm);
  color: var(--text-secondary);
  white-space: nowrap;
}

/* ─── Theme Skin Selector ─── */
#settings-modal .theme-skin-options {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

#settings-modal .theme-skin-card {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-xs);
  background: color-mix(in srgb, var(--input-bg) 88%, transparent);
  color: var(--text-color);
  font-size: var(--text-body);
  cursor: pointer;
  transition:
    border-color 0.2s ease,
    background 0.2s ease,
    box-shadow 0.2s ease;
}

#settings-modal .theme-skin-card:hover {
  border-color: color-mix(in srgb, var(--primary-color) 50%, var(--border-color));
  background: color-mix(in srgb, var(--primary-color) 6%, var(--input-bg) 94%);
}

#settings-modal .theme-skin-card.active {
  border-color: var(--primary-color);
  background: color-mix(in srgb, var(--primary-color) 10%, var(--input-bg) 90%);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--primary-color) 20%, transparent);
}

#settings-modal .theme-skin-swatch {
  display: inline-block;
  width: 16px;
  height: 16px;
  border-radius: var(--radius-circle);
  flex-shrink: 0;
  border: 1px solid color-mix(in srgb, var(--border-color) 60%, transparent);
}

#settings-modal .theme-skin-label {
  font-weight: var(--weight-medium);
  white-space: nowrap;
}

#settings-modal .api-keys-grid {
  display: grid;
  margin-top: 0;
  gap: 10px;
}

#settings-modal .provider-fold-group {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--input-bg) 88%, transparent);
  overflow: hidden;
  transition:
    border-color 0.2s ease,
    box-shadow 0.2s ease,
    background var(--transition-base);
}

#settings-modal .provider-fold-group[open] {
  border-color: color-mix(in srgb, var(--primary-color) 26%, var(--border-color));
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--primary-color) 8%, transparent);
  background: color-mix(in srgb, var(--input-bg) 92%, transparent);
}

#settings-modal .provider-fold-summary {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  cursor: pointer;
  color: var(--text-color);
  list-style: none;
  user-select: none;
  transition: background var(--transition-base);
}

#settings-modal .provider-fold-summary::-webkit-details-marker {
  display: none;
}

#settings-modal .provider-fold-summary::marker {
  content: '';
}

#settings-modal .provider-fold-summary::before {
  content: '';
  width: 8px;
  height: 8px;
  border-right: 2px solid color-mix(in srgb, var(--text-secondary) 90%, var(--text-color));
  border-bottom: 2px solid color-mix(in srgb, var(--text-secondary) 90%, var(--text-color));
  transform: rotate(-45deg);
  transform-origin: 60% 60%;
  transition:
    transform 0.2s ease,
    border-color var(--transition-base);
  flex-shrink: 0;
}

#settings-modal .provider-fold-group[open] .provider-fold-summary::before {
  transform: rotate(45deg);
  border-color: color-mix(in srgb, var(--primary-color) 76%, var(--text-color));
}

#settings-modal .provider-fold-summary:hover {
  background: color-mix(in srgb, var(--primary-color) 4%, transparent);
}

#settings-modal .provider-fold-summary .provider-fold-title {
  display: block;
  font-size: var(--text-body);
  font-weight: var(--weight-bold);
  line-height: 1.35;
}

#settings-modal .provider-fold-summary .provider-fold-note {
  display: block;
  margin-top: 1px;
  font-size: var(--text-caption);
  color: var(--text-secondary);
  line-height: 1.35;
}

#settings-modal .provider-fold-content {
  display: grid;
  gap: 10px;
  padding: 10px 12px 12px;
  border-top: 1px solid color-mix(in srgb, var(--border-color) 64%, transparent);
}

#settings-modal .api-key-row {
  display: grid;
  grid-template-columns: 112px minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
}

#settings-modal .api-key-row .provider-name {
  width: auto;
  font-size: var(--text-body);
  font-weight: var(--weight-semibold);
  color: var(--text-color);
  white-space: nowrap;
}

#settings-modal .api-key-row .provider-name-link {
  color: var(--text-color);
  text-decoration: none;
  cursor: pointer;
  transition:
    color 0.2s ease,
    text-decoration-color var(--transition-base);
}

#settings-modal .api-key-row .provider-name-link:hover {
  color: color-mix(in srgb, var(--primary-color) 82%, var(--text-color));
  text-decoration: underline;
  text-underline-offset: 2px;
}

#settings-modal .api-key-row input {
  height: 40px;
  width: 100%;
  padding: 0 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xs);
  background: color-mix(in srgb, var(--input-bg) 88%, transparent);
  color: var(--text-color);
}

#settings-modal .api-test-btn {
  min-width: 56px;
  height: 38px;
  padding: 0 12px;
  border-radius: var(--radius-xs);
  border: 1px solid var(--settings-border-accent);
  background: transparent;
  color: var(--settings-accent-text);
  font-size: var(--text-body-sm);
  justify-self: end;
}

#settings-modal .api-test-btn:hover:not(:disabled) {
  border-color: color-mix(in srgb, var(--primary-color) 52%, var(--border-color));
  background: var(--settings-accent-fill);
  color: color-mix(in srgb, var(--primary-color) 92%, var(--text-primary));
}

#settings-modal .custom-provider-row {
  gap: 8px;
  padding: 12px;
  margin-bottom: 10px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--settings-surface-soft);
}

#settings-modal .custom-provider-row .cp-field {
  display: grid;
  align-items: center;
  gap: 10px;
  grid-template-columns: 56px minmax(0, 1fr);
}

#settings-modal .custom-provider-row .cp-field.cp-field-name {
  grid-template-columns: 56px minmax(0, 1fr) auto;
}

#settings-modal .custom-provider-row .cp-field.cp-field-key {
  grid-template-columns: 56px minmax(0, 1fr) auto;
}

#settings-modal .custom-provider-row .cp-label {
  width: auto;
  text-align: left;
  font-size: var(--text-body-sm);
}

#settings-modal .custom-provider-row input {
  height: 36px;
  padding: 0 10px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xs);
  background: var(--settings-surface-raised);
  color: var(--text-primary);
}

#settings-modal .custom-provider-row .cp-field.cp-field-model {
  grid-template-columns: 56px minmax(0, 1fr) auto;
  position: relative;
}

#settings-modal .custom-provider-row .cp-fetch-models-btn {
  width: 36px;
  height: 36px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xs);
  background: var(--settings-surface-raised);
  color: var(--text-secondary);
  font-size: var(--text-title);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

#settings-modal .custom-provider-row .cp-fetch-models-btn .material-symbols-outlined,
#settings-modal .cp-delete-btn .material-symbols-outlined {
  font-size: var(--text-heading);
  line-height: 1;
}

#settings-modal .custom-provider-row .cp-fetch-models-btn:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
}

#settings-modal .custom-provider-row .cp-models-dropdown {
  position: absolute;
  top: 100%;
  left: 56px;
  right: 0;
  margin-top: 4px;
  padding: 0;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--settings-surface-raised);
  color: var(--text-primary);
  font-size: var(--text-body-sm);
  z-index: 10;
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

#settings-modal .cp-models-dropdown-header {
  padding: 8px 12px;
  font-size: var(--text-caption);
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-color);
  font-weight: var(--weight-medium);
  letter-spacing: 0.02em;
}

#settings-modal .cp-models-dropdown-list {
  max-height: 200px;
  overflow-y: auto;
  padding: 4px;
}

#settings-modal .cp-models-dropdown-item {
  padding: 7px 10px;
  border-radius: var(--radius-xs);
  cursor: pointer;
  transition: background var(--transition-fast);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

#settings-modal .cp-models-dropdown-item:hover {
  background: color-mix(in srgb, var(--primary-color) 12%, transparent);
  color: var(--primary-color);
}

#settings-modal .custom-provider-row .cp-field.cp-field-key .api-test-btn {
  justify-self: end;
}

#settings-modal .cp-delete-btn {
  width: 30px;
  height: 30px;
  border-radius: var(--radius-xs);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

#settings-modal .add-provider-btn {
  width: 100%;
  height: 42px;
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-xs);
  background: transparent;
  color: var(--text-secondary);
  font-size: var(--text-body);
}

#settings-modal .add-provider-btn:hover {
  border-color: color-mix(in srgb, var(--primary-color) 55%, var(--border-color));
  background: color-mix(in srgb, var(--primary-color) 6%, transparent);
  color: var(--primary-color);
}

#settings-modal .settings-toggle-group {
  display: flex;
  flex-direction: column;
  gap: 0;
}

#settings-modal .settings-toggle-row {
  padding: 10px 0;
  border-bottom: 1px solid color-mix(in srgb, var(--border-color) 60%, transparent);
}

#settings-modal .settings-toggle-row:first-child {
  padding-top: 0;
}

#settings-modal .settings-toggle-row:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

#settings-modal .settings-toggle-row .toggle-info label {
  margin-bottom: 2px;
  font-size: var(--text-body);
  font-weight: var(--weight-bold);
}

#settings-modal .settings-toggle-row .toggle-info .hint {
  font-size: var(--text-body-sm);
}

#settings-modal .settings-global-io .form-label {
  margin-bottom: 10px;
}

#settings-modal .settings-global-io-actions {
  display: flex;
  gap: 8px;
}

#settings-modal .settings-reset-section .step2-section-header {
  margin-bottom: 0;
}

#settings-modal .settings-reset-section .step1-reset-btn {
  width: auto;
  min-height: 34px;
  padding: 4px 10px;
  white-space: nowrap;
  flex: 0 0 auto;
}

#settings-modal .step2-left-panel,
#settings-modal .editor-left-panel {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

#settings-modal .step2-section {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--bg-color);
  padding: 14px 16px 12px;
  box-shadow: 0 1px 2px var(--overlay-4);
}

#settings-modal .step2-section-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 4px;
}

/* 让 ? 按钮紧贴标题，重置/其他按钮推到右侧 */
#settings-modal .step2-section-header .section-help-btn {
  flex-shrink: 0;
  margin-right: auto;
}

/* 没有重置按钮的 header 里：? 按钮不用 margin-right: auto */
#settings-modal .step2-section-header .section-help-btn:last-child {
  margin-right: 0;
}

#settings-modal .step2-section-title {
  font-size: var(--text-subtitle);
  font-weight: var(--weight-bold);
  color: var(--text-color);
  flex-shrink: 0;
}

#settings-modal .step2-module-textarea {
  width: 100%;
  min-height: 140px;
  padding: 10px 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xs);
  background: color-mix(in srgb, var(--input-bg) 88%, transparent);
  color: var(--text-color);
  resize: none;
  overflow: hidden;
}

#settings-modal .step2-section .hint {
  margin: 0 0 6px;
  line-height: 1.45;
}

/* 帮助面板在 settings-modal 中的样式精调 */
#settings-modal .section-help-content {
  margin: 0;
  padding: 0 12px;
  border-radius: var(--radius-xs);
}

#settings-modal .section-help-content.expanded {
  margin: 6px 0 4px;
  padding: 10px 12px;
}

/* Removed #settings-modal #tab-prompts .settings-two-column to use default 18px gap */

#settings-modal #tab-prompts .step2-section-title {
  font-size: var(--text-subtitle);
  font-weight: var(--weight-bold);
}

#settings-modal #tab-prompts .settings-toggle-row .toggle-info label {
  font-size: var(--text-subtitle);
  font-weight: var(--weight-bold);
}

/* 自定义设置内的 toggle-row 不需要额外 padding（section 已有 padding） */
#settings-modal #tab-prompts .step2-section .settings-toggle-row {
  padding-top: 0;
  padding-bottom: 0;
  border-bottom: none;
}

#settings-modal #tab-prompts .step2-section .hint {
  font-size: var(--text-body-sm);
  color: var(--text-secondary);
  line-height: 1.45;
}

#settings-modal #tab-prompts .settings-toggle-row .toggle-info .hint {
  font-size: var(--text-body-sm);
  color: var(--text-secondary);
  line-height: 1.45;
}

#settings-modal .step2-section-grow .step2-module-textarea {
  min-height: 230px;
}

#settings-modal .settings-modal-wide > .modal-actions {
  display: none !important;
}

.settings-feedback-entry {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-top: 18px;
  padding: 18px 20px;
  border: 1px solid color-mix(in srgb, var(--brand-primary) 18%, var(--border-color));
  border-radius: var(--radius-md);
  background:
    linear-gradient(
      135deg,
      color-mix(in srgb, var(--brand-primary) 10%, var(--input-bg) 90%) 0%,
      color-mix(in srgb, var(--brand-secondary) 8%, var(--surface-panel) 92%) 100%
    );
  box-shadow: var(--shadow-sm), var(--shadow-inset);
}

.settings-feedback-entry__copy {
  min-width: 0;
}

.settings-feedback-entry__eyebrow {
  margin-bottom: 6px;
  font-size: var(--text-2xs);
  font-weight: var(--weight-bold);
  letter-spacing: 0.16em;
  color: var(--text-soft);
}

.settings-feedback-entry__title {
  margin: 0 0 6px;
  font-size: var(--text-subtitle);
  color: var(--text-primary);
}

.settings-feedback-entry__body {
  margin: 0;
  color: var(--text-secondary);
  line-height: 1.6;
}

.settings-feedback-entry__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-width: 184px;
  min-height: 40px;
  padding: 0 20px;
  border-radius: var(--radius-sm);
  font-weight: var(--weight-semibold);
  flex-shrink: 0;
}

#feedback-modal {
  z-index: 450;
}

#feedback-modal .feedback-modal-content {
  max-width: 560px !important;
}

#feedback-modal [hidden] {
  display: none !important;
}

#feedback-modal .modal-description {
  text-align: left;
  line-height: 1.65;
}

#feedback-modal .modal-actions {
  margin-top: 18px;
}

#feedback-modal .form-group textarea {
  resize: none;
  overflow: hidden;
  max-height: 200px;
}

#feedback-modal .form-group textarea.is-overflowing {
  overflow-y: auto;
}

.feedback-upload-zone {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 56px;
  padding: 12px;
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--input-bg) 60%, transparent);
  cursor: pointer;
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

.feedback-upload-zone:hover,
.feedback-upload-zone.drag-over {
  border-color: var(--primary-color);
  background: color-mix(in srgb, var(--primary-color) 6%, transparent);
}

.feedback-upload-zone__prompt {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
  font-size: var(--text-body);
  pointer-events: none;
}

.feedback-upload-zone__prompt .material-symbols-outlined {
  font-size: 22px;
  color: var(--text-tertiary);
}

.feedback-upload-previews {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}

.feedback-upload-previews:empty {
  display: none;
}

.feedback-upload-preview {
  position: relative;
  width: 72px;
  height: 72px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.feedback-upload-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.feedback-upload-preview__remove {
  position: absolute;
  top: 2px;
  right: 2px;
  width: 20px;
  height: 20px;
  border: none;
  border-radius: var(--radius-circle);
  background: var(--overlay-60);
  color: var(--text-invert);
  font-size: var(--text-body-lg);
  line-height: 20px;
  text-align: center;
  cursor: pointer;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.feedback-upload-preview__remove:hover {
  background: var(--overlay-80);
}

.feedback-debug-box {
  margin-top: 6px;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background: color-mix(in srgb, var(--input-bg) 90%, transparent);
}

.feedback-debug-box__toggle {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin: 0;
  color: var(--text-primary);
  font-weight: var(--weight-bold);
  cursor: pointer;
}

.feedback-debug-box__toggle input {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  margin: 2px 0 0;
  appearance: auto;
  -webkit-appearance: checkbox;
  background: transparent;
  border: none;
  border-radius: 0;
  box-shadow: none;
  accent-color: var(--brand-primary);
}

.feedback-debug-box__meta {
  margin: 8px 0 0;
  font-size: var(--text-body-sm);
  line-height: 1.55;
  color: var(--text-secondary);
}

.feedback-debug-box__meta--warning {
  color: var(--warning-text);
}

@media (max-width: 900px) {
  .settings-feedback-entry {
    flex-direction: column;
    align-items: stretch;
  }

  .settings-feedback-entry__btn {
    width: 100%;
    min-width: 0;
  }

  #settings-modal .settings-header {
    grid-template-columns: auto minmax(180px, 1fr) auto;
    align-items: center;
    gap: 10px;
    padding: 14px;
  }

  #settings-modal .settings-title-block {
    min-width: 0;
    padding-right: 10px;
  }

  #settings-modal .settings-header .settings-title {
    font-size: var(--text-heading);
  }

  #settings-modal .settings-subtitle {
    font-size: var(--text-2xs);
  }

  #settings-modal .settings-tabs {
    width: min(100%, 340px);
    justify-self: center;
  }

  #settings-modal .settings-toolbar-cancel-btn,
  #settings-modal .settings-toolbar-confirm-btn {
    padding: 0 12px;
  }

  #settings-modal .settings-header-actions {
    justify-self: end;
  }

  #settings-modal .settings-header-mini-actions {
    gap: 6px;
  }

  #settings-modal .settings-two-column {
    flex-direction: column;
    gap: 12px;
  }

  #settings-modal .settings-right-column {
    width: 100%;
    min-width: 0;
    order: -1;
  }

  #settings-modal #tab-api .settings-left-column,
  #settings-modal #tab-api .settings-right-column {
    width: 100%;
    min-width: 0;
    flex: 1 1 auto;
  }

  #settings-modal #tab-basic .settings-basic-column {
    gap: 12px;
  }

  #settings-modal #tab-api .settings-right-column {
    order: 0;
  }

  #settings-modal #tab-prompts .settings-left-column,
  #settings-modal #tab-prompts .settings-right-column {
    width: 100%;
    min-width: 0;
    flex: 1 1 auto;
  }

  #settings-modal .module-config-row {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 700px) {
  #settings-modal .settings-header {
    display: grid !important;
    grid-template-columns: auto 1fr;
    grid-template-rows: auto auto;
    height: auto !important;
    min-height: 0 !important;
    max-height: none !important;
    overflow: visible !important;
    padding: 12px;
    gap: 8px 10px;
    justify-content: start !important;
  }

  #settings-modal .settings-title-block {
    grid-row: 1;
    grid-column: 1;
    border-right: none;
    padding-right: 0;
  }

  #settings-modal .settings-header .settings-title {
    display: block !important;
    font-size: var(--text-heading);
  }

  #settings-modal .settings-subtitle {
    display: block;
    margin: 4px 0 0;
  }

  #settings-modal .settings-tabs {
    grid-row: 2;
    grid-column: 1 / -1;
    width: 100%;
    padding: 2px;
    gap: 0;
    justify-content: flex-start !important;
  }

  #settings-modal .settings-tab {
    padding: 0 10px;
    font-size: var(--text-body-sm);
  }

  #settings-modal .settings-header-actions {
    grid-row: 1;
    grid-column: 2;
    display: flex;
    width: auto;
    justify-self: end;
    align-items: center;
    gap: 6px;
  }

  #settings-modal .settings-toolbar-cancel-btn,
  #settings-modal .settings-toolbar-confirm-btn {
    width: auto;
    height: 34px;
    padding: 0 10px;
    font-size: var(--text-body-sm);
  }

  #settings-modal .settings-header-divider {
    display: none;
  }

  #settings-modal .settings-theme-btn,
  #settings-modal .settings-language-btn {
    min-width: 34px;
    height: 34px;
  }

  #settings-modal .settings-theme-btn {
    width: 34px;
  }

  #settings-modal .settings-language-btn {
    padding: 0 8px;
    font-size: var(--text-body-lg);
  }

  #settings-modal .settings-body {
    padding: 12px;
  }

  #settings-modal .module-config-row {
    grid-template-columns: 1fr;
  }

  #settings-modal .module-config-header > .module-label .api-simple-hint {
    display: block;
    margin-top: 4px;
    line-height: 1.35;
    white-space: normal;
  }

  #settings-modal .module-price-row .price-info {
    min-width: 0;
    max-width: 100%;
  }

  #settings-modal .module-price-main {
    flex-wrap: nowrap;
  }

  #settings-modal .module-price-actions {
    width: auto;
    flex-wrap: nowrap;
  }

  #settings-modal .module-price-flat-btn {
    min-height: 30px;
    padding: 0 8px;
    font-size: var(--text-body-sm);
  }

  #settings-modal .module-price-controls {
    gap: 4px;
    width: 100%;
  }

  #settings-modal .module-price-row .temp-label {
    font-size: var(--text-body-sm);
  }

  #settings-modal .module-price-editor {
    flex-wrap: wrap;
    row-gap: 4px;
  }

  #settings-modal .module-price-edit-input {
    width: 42px !important;
    max-width: 42px !important;
    min-width: 42px !important;
  }

  #settings-modal .module-price-edit-unit {
    min-width: 42px;
  }

  #settings-modal .module-price-controls .module-temp-input {
    width: 68px !important;
    max-width: 68px !important;
    min-width: 68px !important;
    height: 30px;
    padding: 0 8px;
  }

  #settings-modal .ui-scale-header-row {
    gap: 6px;
  }

  #settings-modal .ui-scale-header-actions {
    gap: 6px;
  }

  #settings-modal .api-key-row {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 6px 8px;
  }

  #settings-modal .provider-fold-group {
    border-radius: var(--radius-xs);
  }

  #settings-modal .provider-fold-summary {
    display: grid;
    grid-template-columns: 12px minmax(0, 1fr);
    column-gap: 8px;
    row-gap: 2px;
    align-items: center;
    padding: 9px 10px;
  }

  #settings-modal .provider-fold-summary::before {
    grid-column: 1;
    grid-row: 1 / 3;
    align-self: center;
    justify-self: center;
  }

  #settings-modal .provider-fold-summary .provider-fold-title {
    grid-column: 2;
    font-size: var(--text-body-sm);
    line-height: 1.35;
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  #settings-modal .provider-fold-summary .provider-fold-note {
    grid-column: 2;
    font-size: var(--text-caption);
    line-height: 1.35;
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  #settings-modal .provider-fold-content {
    gap: 8px;
    padding: 8px 10px 10px;
  }

  #settings-modal .api-key-row .provider-name {
    grid-column: 1 / -1;
    width: auto;
  }

  #settings-modal .api-key-row .provider-name-link {
    display: inline-flex;
    justify-self: start;
    width: fit-content;
    max-width: 100%;
  }

  #settings-modal .api-test-btn {
    justify-self: end;
    height: 34px;
  }

  #settings-modal .custom-provider-row .cp-field {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  #settings-modal .custom-provider-row .cp-field.cp-field-name {
    grid-template-columns: 1fr auto;
  }

  #settings-modal .custom-provider-row .cp-field.cp-field-name .cp-label {
    grid-column: 1 / -1;
  }

  #settings-modal .custom-provider-row .cp-field.cp-field-model {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }

  #settings-modal .custom-provider-row .cp-field.cp-field-model .cp-label {
    grid-column: 1 / -1;
  }

  #settings-modal .custom-provider-row .cp-models-dropdown {
    left: 0;
  }

  #settings-modal .custom-provider-row .cp-field.cp-field-key {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }

  #settings-modal .custom-provider-row .cp-field.cp-field-key .cp-label {
    grid-column: 1 / -1;
  }

  #settings-modal .custom-provider-row .cp-label {
    width: 100%;
  }

  #settings-modal .settings-right-column {
    min-width: 0;
  }

  #settings-modal .settings-tabs {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  #settings-modal .settings-tab {
    flex-shrink: 0;
  }

  #settings-modal .settings-body {
    padding: 10px;
  }
}

/* 手机全屏设置弹窗 */
@media (max-width: 640px) {
  #settings-modal {
    padding: 0;
  }

  #settings-modal .settings-modal-wide {
    width: 100vw !important;
    max-width: 100vw !important;
    height: 100dvh !important;
    max-height: 100dvh !important;
    border-radius: 0;
    display: flex;
    flex-direction: column;
    padding-top: var(--safe-top) !important;
    padding-bottom: var(--safe-bottom) !important;
  }

  #settings-modal .settings-header {
    padding: 10px 12px;
    padding-top: 10px;
  }

  #settings-modal .settings-body {
    padding: 8px;
    -webkit-overflow-scrolling: touch;
  }

  #settings-modal .settings-tab {
    padding: 0 8px;
    font-size: var(--text-caption);
  }

  #settings-modal .settings-toolbar-cancel-btn,
  #settings-modal .settings-toolbar-confirm-btn {
    height: 34px;
    font-size: var(--text-body-sm);
  }
}