:root {
  /* Color Palette - minimaxi.com Light Theme */
  --bg-primary: #ffffff;
  --bg-secondary: #f7f8fa;
  --bg-tertiary: #f0f1f3;
  --text-primary: #1a1a2e;
  --text-secondary: #4a4a6a;
  --text-muted: #8c8ca1;
  --accent-color: #6366f1;
  --accent-hover: #8b5cf6;
  --accent-gradient: linear-gradient(135deg, var(--accent-color), var(--accent-hover));
  --border-color: #e5e7eb;
  --success-color: #10b981;
  --error-color: #ef4444;
  --warning-color: #f59e0b;
  --error-bg: #fef2f2;
  --error-border: #fecaca;
  --success-bg: #ecfdf5;
  --success-border: #a7f3d0;
  --warning-border: #fde68a;
  
  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
  
  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
  
  /* Transitions */
  --transition-fast: 0.2s ease;

  --trace-reasoning: #8b5cf6;
  --trace-skill: #f59e0b;
  --trace-mcp: #10b981;
  --trace-tool: #06b6d4;
  --trace-lsp: #3b82f6;
  --trace-agent: #ec4899;
  --trace-text: #64748b;
  --trace-invalid: #475569;
  --trace-error: #ef4444;
  --z-topbar: 100;
  --z-menu: 99;
  --z-trace: 98;
  --z-toast: 200;
}

[data-theme="dark"] {
  --bg-primary: #1e293b;
  --bg-secondary: #0f172a;
  --bg-tertiary: #334155;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent-color: #818cf8;
  --accent-hover: #6366f1;
  --accent-gradient: linear-gradient(135deg, var(--accent-color), #a78bfa);
  --border-color: #334155;
  --success-color: #4ade80;
  --error-color: #f87171;
  --warning-color: #fbbf24;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.4), 0 2px 4px -1px rgba(0,0,0,0.3);
  --error-bg: #451a1a;
  --error-border: #7f1d1d;
  --success-bg: #14532d;
  --success-border: #166534;
  --warning-border: #92400e;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg-primary: #1e293b;
    --bg-secondary: #0f172a;
    --bg-tertiary: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --accent-color: #818cf8;
    --accent-hover: #6366f1;
    --accent-gradient: linear-gradient(135deg, var(--accent-color), #a78bfa);
    --border-color: #334155;
    --success-color: #4ade80;
    --error-color: #f87171;
    --warning-color: #fbbf24;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.4), 0 2px 4px -1px rgba(0,0,0,0.3);
    --error-bg: #451a1a;
    --error-border: #7f1d1d;
    --success-bg: #14532d;
    --success-border: #166534;
    --warning-border: #92400e;
  }
}

/* Theme Toggle */
.theme-toggle {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 18px;
  padding: 4px 8px;
  border-radius: 6px;
  transition: background-color var(--transition-fast);
}
.theme-toggle:hover {
  background-color: var(--bg-tertiary);
}

.provider-tab:focus-visible,
.nav-link:focus-visible,
.theme-toggle:focus-visible,
.btn:focus-visible,
.action-btn:focus-visible,
.range-btn:focus-visible,
.star-btn:focus-visible,
.card-menu-trigger:focus-visible,
.tool-call summary:focus-visible,
.trace-panel-close:focus-visible,
.chain-node:focus-visible,
.chain-step-header:focus-visible {
  outline: 2px solid var(--accent-color);
  outline-offset: 2px;
}

.provider-tab:active,
.nav-link:active,
.btn:active,
.action-btn:active,
.range-btn:active {
  transform: scale(0.97);
}

.btn, .action-btn, .range-btn, .provider-tab, .nav-link, .star-btn, .card-menu-trigger, .theme-toggle {
  transition: background 0.15s, border-color 0.15s, transform 0.1s, color 0.15s;
}

/* Layout */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.topbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 48px;
  background-color: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  padding: 0 24px;
  z-index: var(--z-topbar);
  gap: 8px;
}

.topbar-tabs {
  display: flex;
  gap: 2px;
  justify-self: center;
}

@media (max-width: 768px) {
  .topbar-tabs {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .topbar-tabs::-webkit-scrollbar { display: none; }
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.provider-tab {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 13px 14px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.85rem;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}

.provider-tab:hover {
  color: var(--text-primary);
}

.provider-tab.active {
  color: var(--accent-color);
  border-bottom-color: var(--accent-color);
}

.provider-tab.disabled {
  color: var(--text-muted);
  opacity: 0.4;
  cursor: not-allowed;
  pointer-events: none;
}

.provider-icon {
  display: flex;
  align-items: center;
}

.provider-icon svg {
  width: 16px;
  height: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-primary);
  font-weight: 700;
  text-decoration: none;
  font-size: 16px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

.logo svg {
  width: 22px;
  height: 22px;
  color: var(--accent-color);
}

.logo-text {
  white-space: nowrap;
}

.search-form {
  display: flex;
  align-items: center;
}

.search-input {
  background-color: var(--bg-tertiary);
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 8px 16px;
  width: 320px;
  font-size: 14px;
  color: var(--text-primary);
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.search-input:focus {
  outline: none;
  border-color: var(--accent-color);
  background-color: var(--bg-primary);
}

.content {
  max-width: 1000px;
  margin: 0 auto;
  padding: 72px 24px 48px;
}

.content:has(.two-column) {
  max-width: none;
  padding: 52px 0 0;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.03;
  background-image:
    linear-gradient(to right, currentColor 1px, transparent 1px),
    linear-gradient(to bottom, currentColor 1px, transparent 1px);
  background-size: 24px 24px;
  z-index: -1;
}

.mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 32px;
}

@media (max-width: 768px) {
  .dashboard-grid {
    grid-template-columns: 1fr;
  }
}

.dash-card {
  display: flex;
  flex-direction: column;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.dash-card:hover {
  border-color: var(--accent-color);
  box-shadow: var(--shadow-md);
}

.dash-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background-color: var(--bg-tertiary);
  border-bottom: 1px solid var(--border-color);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 13px;
}

.dash-file {
  color: var(--text-primary);
  font-weight: 600;
}

.dash-badge {
  font-size: 11px;
  padding: 1px 8px;
  border-radius: 9999px;
  background-color: var(--accent-color);
  color: #fff;
  font-weight: 500;
}

.dash-card-body {
  padding: 16px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 13px;
  line-height: 1.8;
  flex: 1;
}

.dash-line {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.ck { color: var(--accent-color); }
.cs { color: var(--success-color); }
.cn { color: var(--warning-color); font-weight: 600; }
.cc { color: var(--text-muted); font-style: italic; margin-left: 8px; }

.dash-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  border-top: 1px solid var(--border-color);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 12px;
  color: var(--text-muted);
}

.dash-cmd {
  color: var(--text-muted);
}

.dash-card:hover .dash-cmd {
  color: var(--accent-color);
}

.dash-arrow {
  color: var(--text-muted);
  transition: transform var(--transition-fast), color var(--transition-fast);
}

.dash-card:hover .dash-arrow {
  transform: translateX(4px);
  color: var(--accent-color);
}

/* Session List */
.page-header {
  margin-bottom: 32px;
}

.page-header h1 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.page-header p {
  font-size: 16px;
  color: var(--text-secondary);
}

.session-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.session-card {
  background-color: var(--bg-primary);
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-fast), transform var(--transition-fast);
  border: 1px solid var(--border-color);
  position: relative;
}

.session-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.session-card:focus-within .card-actions {
  opacity: 1;
}

.session-card-link {
  display: block;
  text-decoration: none;
  padding: 16px 20px;
  color: inherit;
}

.session-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.session-card-title {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-primary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.session-card-time {
  font-size: 12px;
  color: var(--text-muted);
}

.session-card-directory {
  font-size: 12px;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 12px;
}

.session-card-stats {
  display: flex;
  gap: 16px;
  font-size: 12px;
  color: var(--text-muted);
}

.additions {
  color: var(--success-color);
}

.deletions {
  color: var(--error-color);
}

.search-note {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

/* Session Detail */
.session-header {
  margin-bottom: 16px;
}

.session-header h1 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 4px;
}

.session-meta-row {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-secondary);
  flex-wrap: wrap;
  margin-bottom: 8px;
}

.session-meta-sep {
  color: var(--text-muted);
}

.session-directory {
  font-size: 12px;
  color: var(--text-secondary);
}

.session-summary {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  background-color: var(--bg-primary);
  padding: 20px;
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
}

.session-summary div {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.session-summary dt {
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.session-summary dd {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-primary);
}

/* Messages */
.messages {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 32px;
}

.message-group {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.message {
  background-color: var(--bg-primary);
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
  padding: 20px;
  border: 1px solid var(--border-color);
  border-left-width: 4px;
}

.message-user {
  border-left-color: var(--accent-color);
}

.message-assistant {
  border-left-color: var(--border-color);
}

.message-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.message-role {
  background: var(--accent-gradient);
  color: var(--bg-primary);
  padding: 2px 8px;
  border-radius: 9999px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.message-user .message-role {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
}

.message-model, .message-tokens, .message-time {
  font-size: 12px;
  color: var(--text-muted);
}

.message-body.markdown {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-primary);
}

.message-body.markdown p {
  margin-bottom: 16px;
}

.message-body.markdown p:last-child {
  margin-bottom: 0;
}

.message-body.markdown h1,
.message-body.markdown h2,
.message-body.markdown h3,
.message-body.markdown h4,
.message-body.markdown h5,
.message-body.markdown h6 {
  color: var(--text-primary);
  margin-top: 24px;
  margin-bottom: 12px;
  font-weight: 600;
}

.message-body.markdown h1 { font-size: 24px; }
.message-body.markdown h2 { font-size: 20px; }
.message-body.markdown h3 { font-size: 18px; }

.message-body.markdown strong {
  font-weight: 600;
  color: var(--text-primary);
}

.message-body.markdown a {
  color: var(--accent-color);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.message-body.markdown a:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}

.message-body.markdown blockquote {
  border-left: 3px solid var(--border-color);
  padding-left: 16px;
  color: var(--text-secondary);
  margin: 16px 0;
  font-style: italic;
}

.message-body.markdown ul,
.message-body.markdown ol {
  margin-bottom: 16px;
  padding-left: 24px;
}

.message-body.markdown li {
  margin-bottom: 8px;
}

.message-body.plain {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 13px;
  background-color: var(--bg-tertiary);
  padding: 16px;
  border-radius: 8px;
  white-space: pre-wrap;
  word-break: break-word;
}

/* Code */
pre {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 14px;
  overflow-x: auto;
  margin: 16px 0;
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 13px;
}

:not(pre) > code {
  background-color: var(--bg-tertiary);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--text-primary);
}

/* Tool Calls */
.tool-call {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  margin: 16px 0;
  overflow: hidden;
}

.tool-call summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  cursor: pointer;
  background-color: var(--bg-secondary);
  transition: background-color var(--transition-fast);
  user-select: none;
}

.tool-call summary:hover {
  background-color: var(--bg-tertiary);
}

.tool-name {
  color: var(--accent-color);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-weight: 600;
  font-size: 13px;
}

.tool-status {
  color: var(--text-muted);
  font-size: 13px;
}

.tool-duration {
  color: var(--text-muted);
  font-size: 12px;
  margin-left: auto;
}

.tool-panels {
  padding: 16px;
  border-top: 1px solid var(--border-color);
}

.tool-panels pre {
  background-color: var(--bg-tertiary);
  font-size: 12px;
  margin: 0;
  border: none;
}

.tool-status-error {
  border-left: 4px solid var(--error-color);
}

.tool-status-error summary {
  background-color: var(--error-bg);
}

details[open] summary {
  border-bottom: 1px solid var(--border-color);
}

/* Todos */
.todo-list-wrap {
  background-color: var(--bg-primary);
  border-radius: 12px;
  padding: 20px;
  box-shadow: var(--shadow-sm);
  margin: 24px 0;
  border: 1px solid var(--border-color);
}

.todo-list-wrap h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.todo-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.todo-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 13px;
  color: var(--text-secondary);
}

.todo-icon {
  width: 16px;
  flex-shrink: 0;
  margin-top: 2px;
}

.todo-completed {
  text-decoration: line-through;
  color: var(--text-muted);
}

.todo-completed .todo-icon {
  color: var(--success-color);
}

.todo-in_progress .todo-icon {
  color: var(--warning-color);
}

.todo-pending .todo-icon {
  color: var(--text-muted);
}

/* Pagination */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin-top: 40px;
}

.pagination-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 32px;
  height: 32px;
  padding: 0 12px;
  border-radius: 9999px;
  border: 1px solid var(--border-color);
  background-color: var(--bg-primary);
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
  text-decoration: none;
  transition: all var(--transition-fast);
}

.pagination-link:hover:not(.active) {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

.pagination-link.active {
  background: var(--accent-gradient);
  color: var(--bg-primary);
  border-color: transparent;
}

/* Utility */
.empty-state {
  text-align: center;
  color: var(--text-muted);
  padding: 64px 24px;
  font-size: 15px;
}

mark {
  background-color: rgba(245, 158, 11, 0.2);
  color: inherit;
  padding: 0 2px;
  border-radius: 2px;
}

/* Responsive */
@media (max-width: 768px) {
  .search-input {
    width: 200px;
  }
  
  .session-summary {
    flex-direction: column;
    gap: 16px;
  }
}

/* Stats Page — Terminal Timeline Aesthetic */
.stats-page { padding: 24px 0; }

/* Breadcrumb */
.stats-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 13px;
  color: var(--text-muted);
}
.stats-prompt { color: var(--accent-color); font-weight: 600; }
.stats-breadcrumb-list {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.stats-breadcrumb-list a {
  color: var(--accent-color);
  text-decoration: none;
}
.stats-breadcrumb-list a:hover { text-decoration: underline; }

/* Command header */
.stats-cmd {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 20px;
}

/* Title & description */
.stats-title {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 28px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 8px;
}
.stats-desc {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 14px;
  color: var(--text-muted);
  margin: 0 0 24px;
}

/* Info box */
.stats-info-box {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 28px;
}
.stats-info-header {
  padding: 10px 16px;
  background-color: var(--bg-tertiary);
  border-bottom: 1px solid var(--border-color);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 13px;
}
.stats-info-body {
  padding: 16px 20px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-secondary);
}
.stats-info-body h2 {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 8px;
}
.stats-info-body p { margin: 0; }

/* Summary stats row */
.stats-summary-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
  margin-bottom: 28px;
}
.stats-summary-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 16px;
  text-align: center;
  transition: border-color var(--transition-fast);
}
.stats-summary-card:hover {
  border-color: var(--accent-color);
}
.stats-summary-label {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.stats-summary-value {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
}
.stats-summary-sub {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 11px;
  color: var(--accent-color);
  margin-top: 4px;
}

/* Chart sections */
.stats-chart-section {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 24px;
}
.stats-chart-cmd {
  padding: 10px 16px;
  background-color: var(--bg-tertiary);
  border-bottom: 1px solid var(--border-color);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 13px;
  color: var(--text-muted);
}
.stats-chart-title {
  margin: 16px 20px 12px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
}
.stats-chart-body {
  padding: 0 20px 20px;
  overflow-x: auto;
}
.stats-chart-body svg { width: 100%; height: auto; }

/* Pie chart layout */
.pie-chart-container {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}
.legend-item {
  display: flex;
  align-items: center;
  margin-bottom: 4px;
}
.legend-color {
  display: inline-block;
  width: 12px;
  height: 12px;
  margin-right: 8px;
  border-radius: 2px;
  flex-shrink: 0;
}
.legend-label {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 12px;
  color: var(--text-secondary);
}

@media (max-width: 640px) {
  .stats-summary-row { grid-template-columns: repeat(2, 1fr); }
  .stats-title { font-size: 22px; }
  .pie-chart-container { flex-direction: column; }
}

/* Nav link */
.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 13px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  padding: 4px 12px;
  border-radius: 6px;
  transition: all 0.2s ease;
}
.nav-link:hover { background: var(--bg-secondary); color: var(--text-primary); }

/* Nav active state */
[data-page="stats"] .nav-link[href="/stats"],
[data-page="trash"] .nav-link[href="/trash"] {
  color: var(--accent-color);
  font-weight: 600;
  background-color: var(--bg-tertiary);
}

/* Time Range Filter */
.range-filter {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}

.range-btn {
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 13px;
  text-decoration: none;
  color: var(--text-secondary);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  transition: all 0.2s ease;
}

.range-btn:hover {
  color: var(--text-primary);
  border-color: var(--accent-color);
}

.range-btn.active {
  background: var(--accent-gradient);
  color: var(--bg-primary);
  border-color: transparent;
}

/* Code Highlighting Override */
.hljs {
  background: var(--bg-secondary) !important;
  border-radius: 8px;
  padding: 14px !important;
}
pre code.hljs {
  font-size: 13px;
  line-height: 1.5;
}

/* Two-column layout */
.two-column {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  min-height: calc(100vh - 48px);
}

.two-column.trace-open {
  grid-template-columns: 1fr 500px;
}

.main-content {
  padding: 16px;
  overflow-y: auto;
}

/* === V3: 管理功能样式 === */

/* 卡片操作区 */
.session-card {
  position: relative;
}

.card-actions {
  position: absolute;
  top: 12px;
  right: 12px;
  display: flex;
  align-items: center;
  gap: 4px;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.session-card:hover .card-actions {
  opacity: 1;
}

.star-btn {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 16px;
  color: var(--text-muted);
  padding: 4px;
  border-radius: 4px;
  transition: color var(--transition-fast);
}

.star-btn:hover {
  color: var(--warning-color);
}

.star-btn.starred {
  color: var(--warning-color);
  opacity: 1;
}

/* 已收藏的卡片始终显示星标 */
.session-card.starred .card-actions {
  opacity: 1;
}

.session-card.starred .star-btn {
  opacity: 1;
}

.card-menu-trigger {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 18px;
  color: var(--text-muted);
  padding: 4px 6px;
  border-radius: 4px;
  line-height: 1;
}

.card-menu-trigger:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

/* 下拉菜单 */
.card-menu {
  position: absolute;
  right: 0;
  top: 100%;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  box-shadow: var(--shadow-md);
  z-index: 20;
  min-width: 140px;
  padding: 4px 0;
}

.card-menu button {
  display: block;
  width: 100%;
  text-align: left;
  padding: 8px 16px;
  border: none;
  background: none;
  cursor: pointer;
  font-size: 13px;
  color: var(--text-primary);
}

.card-menu button:hover {
  background: var(--bg-secondary);
}

.card-menu .menu-danger {
  color: var(--error-color);
}

.hidden {
  display: none !important;
}

/* 复选框 */
.card-checkbox {
  position: absolute;
  top: 16px;
  left: 16px;
  width: 18px;
  height: 18px;
  cursor: pointer;
  z-index: 5;
  display: none;
}

.batch-mode .card-checkbox {
  display: block;
}

.batch-mode .session-card-link {
  padding-left: 44px;
}

/* 批量操作栏 */
.batch-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  margin-bottom: 16px;
  box-shadow: var(--shadow-sm);
}

.batch-select-all {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-secondary);
  cursor: pointer;
}

.batch-count {
  font-size: 13px;
  color: var(--text-secondary);
}

/* 通用按钮 */
.btn {
  padding: 6px 14px;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  background: var(--bg-primary);
  cursor: pointer;
  font-size: 13px;
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

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

.btn-manage {
  background: var(--bg-secondary);
  font-size: 13px;
}

.btn-danger {
  color: var(--error-color);
  border-color: var(--error-border);
}

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

.btn-restore {
  color: var(--success-color);
  border-color: var(--success-border);
}

.btn-restore:hover {
  background: var(--success-bg);
}

/* page-header 行布局 */
.page-header-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

/* 详情页操作栏 */
.session-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.action-btn {
  padding: 6px 14px;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  background: var(--bg-primary);
  cursor: pointer;
  font-size: 13px;
  color: var(--text-primary);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.action-btn:hover {
  background: var(--bg-secondary);
}

.action-btn.starred {
  color: var(--warning-color);
  border-color: var(--warning-border);
}

.action-btn.btn-danger {
  color: var(--error-color);
  border-color: var(--error-border);
}

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

/* 回收站卡片 */
.trash-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  opacity: 0.75;
}

.trash-card-content {
  flex: 1;
  min-width: 0;
}

.trash-card-actions {
  display: flex;
  gap: 8px;
  flex-shrink: 0;
  margin-left: 16px;
}

/* Toast notifications */
#toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  padding: 12px 20px;
  border-radius: 8px;
  color: #fff;
  font-size: 14px;
  animation: toast-in 0.3s ease, toast-out 0.3s ease 2.7s forwards;
  pointer-events: none;
  max-width: 320px;
  box-shadow: var(--shadow-md);
}

.toast-success { background-color: var(--success-color); }
.toast-error { background-color: var(--error-color); }
.toast-info { background-color: var(--accent-color); }

@keyframes toast-in {
  from { opacity: 0; transform: translateX(100%); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes toast-out {
  from { opacity: 1; }
  to { opacity: 0; }
}

#scroll-sentinel {
  padding: 24px;
  text-align: center;
}

.scroll-loading {
  color: var(--text-muted);
  font-size: 14px;
}

.scroll-loading::before {
  content: "";
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid var(--border-color);
  border-top-color: var(--accent-color);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  vertical-align: middle;
  margin-right: 8px;
}

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

.scroll-done {
  color: var(--text-muted);
  font-size: 14px;
  padding: 16px 0;
}

@media (max-width: 768px) {
  .topbar {
    padding: 0 12px;
    gap: 2px;
  }
  .provider-tab .provider-name {
    display: none;
  }
  .provider-tab {
    padding: 13px 10px;
  }
  .search-input {
    width: 120px;
  }
  .logo-text {
    display: none;
  }
  .topbar-actions {
    gap: 8px;
  }
}

@media (max-width: 480px) {
  .topbar-actions .nav-link {
    display: none;
  }
  .search-input {
    width: 80px;
  }
}

/* Trace Panel */
.trace-panel {
  display: none;
  flex-direction: column;
  overflow: hidden;
  background: var(--bg-secondary);
  border-left: 2px solid var(--accent-color);
  height: calc(100vh - 48px);
  position: sticky;
  top: 48px;
}

.trace-panel.open {
  display: flex;
}

.trace-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
  color: var(--text-muted);
  font-size: 13px;
  text-align: center;
}

.trace-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
  color: var(--text-muted);
  font-size: 13px;
}

.trace-loading::after {
  content: "";
  width: 16px;
  height: 16px;
  border: 2px solid var(--border-color);
  border-top-color: var(--accent-color);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  margin-left: 8px;
}

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

.trace-btn {
  background: none;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  color: var(--accent-color);
  font-size: 11px;
  padding: 1px 6px;
  cursor: pointer;
  margin-left: auto;
  transition: background 0.15s;
}
.trace-btn:hover {
  background: rgba(129, 140, 248, 0.1);
}

.trace-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  height: 48px;
  border-bottom: 1px solid var(--border-color);
  flex-shrink: 0;
}

.trace-panel-header h3 {
  font-size: 13px;
  color: var(--accent-color);
}

.trace-panel-close {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 20px;
  cursor: pointer;
  padding: 4px 8px;
}

.trace-panel-close:hover {
  color: var(--text-primary);
}

.trace-tab-content {
  flex: 1;
  overflow-y: auto;
  padding: 14px 20px;
}

.trace-step-header {
  font-size: 11px;
  color: var(--text-secondary);
  padding: 8px 0 4px;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 6px;
  display: flex;
  justify-content: space-between;
}

.trace-step-cost {
  color: var(--trace-skill);
}

.trace-span-row {
  display: flex;
  align-items: center;
  margin-bottom: 3px;
  gap: 6px;
}

.trace-span-label {
  width: 90px;
  text-align: right;
  font-size: 10px;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex-shrink: 0;
}

.trace-span-track {
  flex: 1;
  height: 18px;
  position: relative;
}

.trace-span-bar {
  height: 18px;
  border-radius: 3px;
  position: absolute;
  top: 0;
  display: flex;
  align-items: center;
  padding: 0 4px;
  font-size: 9px;
  color: #fff;
  white-space: nowrap;
  min-width: 4px;
}

.trace-span-bar.cat-reasoning { background: var(--trace-reasoning); opacity: 0.7; }
.trace-span-bar.cat-skill { background: var(--trace-skill); color: #000; }
.trace-span-bar.cat-mcp { background: var(--trace-mcp); color: #000; }
.trace-span-bar.cat-tool { background: var(--trace-tool); color: #000; }
.trace-span-bar.cat-lsp { background: var(--trace-lsp); }
.trace-span-bar.cat-agent { background: var(--trace-agent); }
.trace-span-bar.cat-text { background: var(--trace-text); }
.trace-span-bar.cat-invalid { background: var(--trace-invalid); opacity: 0.5; }
.trace-span-bar.status-error { border: 2px solid var(--trace-error); }

.trace-span-time {
  font-size: 9px;
  color: var(--text-muted);
  width: 45px;
  text-align: right;
  flex-shrink: 0;
}

.trace-summary {
  display: flex;
  gap: 12px;
  padding: 8px 0;
  border-top: 1px solid var(--border-color);
  margin-top: 8px;
  font-size: 10px;
  color: var(--text-secondary);
  flex-wrap: wrap;
}

.trace-legend-dot {
  width: 8px;
  height: 8px;
  border-radius: 2px;
  display: inline-block;
  margin-right: 3px;
  vertical-align: middle;
}

.chain-summary {
  display: flex;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.chain-stat {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  color: var(--text-secondary);
}

.chain-dot {
  width: 10px;
  height: 10px;
  border-radius: 3px;
  flex-shrink: 0;
}

.chain-dot.cat-agent { background: var(--trace-agent); }
.chain-dot.cat-skill { background: var(--trace-skill); }
.chain-dot.cat-mcp { background: var(--trace-mcp); }
.chain-dot.cat-tool { background: var(--trace-tool); }
.chain-dot.cat-lsp { background: var(--trace-lsp); }
.chain-dot.cat-reasoning { background: var(--trace-reasoning); }

.chain-section-header {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  padding: 14px 0 6px;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 8px;
  letter-spacing: 0.02em;
}

.chain-step-group {
  margin-bottom: 4px;
}

.chain-step-header {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  color: var(--text-muted);
  padding: 8px 10px;
  cursor: pointer;
  border-radius: 4px;
  list-style: none;
}

.step-num {
  color: var(--text-secondary);
  font-weight: 600;
}

.step-agent {
  color: var(--accent-color);
  font-weight: 500;
}

.step-meta {
  color: var(--text-muted);
  margin-left: auto;
  font-size: 10px;
}

.chain-step-header::-webkit-details-marker {
  display: none;
}

.chain-step-header::before {
  content: "▸";
  margin-right: 6px;
  font-size: 10px;
  transition: transform 0.15s;
}

.chain-step-group[open] > .chain-step-header::before {
  transform: rotate(90deg);
}

.chain-step-header:hover {
  background: rgba(129, 140, 248, 0.06);
}

.chain-root {
  margin-bottom: 12px;
}

.chain-node {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: 6px;
  font-size: 12px;
  margin-bottom: 3px;
  cursor: pointer;
  transition: background 0.15s;
}

.chain-node:hover {
  filter: brightness(1.2);
}

.cat-bg-agent { background: rgba(236, 72, 153, 0.12); }
.cat-bg-skill { background: rgba(245, 158, 11, 0.1); }
.cat-bg-mcp { background: rgba(16, 185, 129, 0.1); }
.cat-bg-tool { background: rgba(6, 182, 212, 0.08); }
.cat-bg-lsp { background: rgba(59, 130, 246, 0.1); }
.cat-bg-reasoning { background: rgba(139, 92, 246, 0.08); }

.chain-node.chain-error {
  border: 1px solid var(--trace-error);
}

.chain-icon {
  font-size: 14px;
  flex-shrink: 0;
}

.chain-cat {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  min-width: 34px;
  color: var(--text-secondary);
}

.chain-label,
.chain-name {
  color: var(--text-primary);
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.chain-agent-name {
  color: var(--trace-agent);
  font-weight: 600;
  flex-shrink: 0;
}

.chain-mcp-name {
  color: var(--trace-mcp);
  font-weight: 600;
  flex-shrink: 0;
}

.chain-desc {
  color: var(--text-secondary);
  font-size: 11px;
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.chain-detail {
  color: var(--text-secondary);
  font-size: 11px;
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.chain-dur {
  color: var(--text-muted);
  font-size: 11px;
  flex-shrink: 0;
}

.chain-status-err {
  color: var(--trace-error);
  font-size: 10px;
  font-weight: 600;
}

.chain-children {
  padding-left: 18px;
  border-left: 2px solid var(--border-color);
  margin-left: 16px;
  margin-bottom: 6px;
  margin-top: 2px;
}

.chain-mcp-group {
  margin-bottom: 6px;
}

.chain-mcp-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  font-size: 12px;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: 6px;
}

.chain-mcp-header:hover {
  background: rgba(16, 185, 129, 0.08);
}

.chain-count {
  margin-left: auto;
  font-size: 11px;
  color: var(--text-muted);
}

.chain-more {
  font-size: 11px;
  color: var(--text-muted);
  padding: 4px 0 4px 32px;
}

.chain-tool-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 8px 0;
}

.chain-tool-chip {
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 4px;
  background: rgba(6, 182, 212, 0.15);
  color: var(--trace-tool);
}

.chain-footer {
  font-size: 11px;
  color: var(--text-muted);
  padding: 12px 0;
  border-top: 1px solid var(--border-color);
  margin-top: 12px;
  text-align: center;
}

@media (max-width: 768px) {
  .two-column.trace-open {
    grid-template-columns: 1fr;
  }
  .trace-panel.open {
    position: fixed;
    top: 48px;
    right: 0;
    width: 100%;
    z-index: var(--z-trace);
  }
}