@import "tailwindcss";

@theme {
  --color-bg: var(--bg);
  --color-bg-panel: var(--bg-panel);
  --color-bg-hover: var(--bg-hover);
  --color-bg-selected: var(--bg-selected);
  --color-border: var(--border);
  --color-text: var(--text);
  --color-text-muted: var(--text-muted);
  --color-text-dim: var(--text-dim);
  --color-accent: var(--accent);
  --color-accent-hover: var(--accent-hover);
  --color-user-bg: var(--user-bg);
  --color-assistant-bg: var(--assistant-bg);
  --color-tool-bg: var(--tool-bg);
  --color-bg-subtle: var(--bg-subtle);
  --font-mono-font: var(--font-mono);
}

:root {
  --bg: #ffffff;
  --bg-panel: #f5f5f5;
  --bg-hover: #eeeeee;
  --bg-selected: #e8e8e8;
  --border: #e0e0e0;
  --text: #1a1a1a;
  --text-muted: #6b7280;
  --text-dim: #9ca3af;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --user-bg: #eff6ff;
  --assistant-bg: #ffffff;
  --tool-bg: #f9fafb;
  --bg-subtle: rgba(0,0,0,0.03);
}

html.dark {
  --bg: #1a1a1a;
  --bg-panel: #242424;
  --bg-hover: #2e2e2e;
  --bg-selected: #383838;
  --border: #3a3a3a;
  --text: #e8e8e8;
  --text-muted: #9ca3af;
  --text-dim: #6b7280;
  --accent: #60a5fa;
  --accent-hover: #93c5fd;
  --user-bg: #1e293b;
  --assistant-bg: #1a1a1a;
  --tool-bg: #1f2937;
  --bg-subtle: rgba(255,255,255,0.04);
}

/* Theme toggle: circular wipe via View Transitions API.
   Disable the UA cross-fade; the actual clip-path animation is driven by
   Element.animate() in hooks/useTheme.ts after transition.ready resolves. */
::view-transition-old(root),
::view-transition-new(root) {
  animation: none;
  mix-blend-mode: normal;
}
::view-transition-old(root) {
  z-index: 1;
}
::view-transition-new(root) {
  z-index: 2;
}

* {
  box-sizing: border-box;
}

html, body {
  height: 100%;
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 14px;
  overscroll-behavior: none;
}

body {
  height: 100dvh;
}

::-webkit-scrollbar {
  width: 4px;
  height: 4px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 2px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-dim);
}

:root {
  --font-mono: var(--font-noto-mono), 'JetBrains Mono', 'Fira Code', 'Consolas', ui-monospace, 'PingFang SC', 'Microsoft YaHei', monospace;
}

pre, code {
  font-family: var(--font-mono);
}

/* react-markdown output styles */
.markdown-body {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text);
  word-break: break-word;
}
.markdown-body p { margin: 0 0 8px; }
.markdown-body p:last-child { margin-bottom: 0; }
.markdown-body h1, .markdown-body h2, .markdown-body h3,
.markdown-body h4, .markdown-body h5, .markdown-body h6 {
  font-weight: 600;
  margin: 10px 0 5px;
  color: var(--text);
  line-height: 1.35;
  letter-spacing: 0;
}
.markdown-body h1 { font-size: 1.16em; }
.markdown-body h2 { font-size: 1.08em; }
.markdown-body h3 { font-size: 0.98em; color: color-mix(in srgb, var(--text) 88%, var(--text-muted)); }
.markdown-body ul, .markdown-body ol {
  padding-left: 22px;
  margin: 5px 0 8px;
  list-style-position: outside;
}
.markdown-body li { margin: 3px 0; padding-left: 2px; }
.markdown-body ul > li { list-style-type: disc; }
.markdown-body ol > li { list-style-type: decimal; }
.markdown-body li > p { margin: 0; }
.markdown-body li::marker {
  color: color-mix(in srgb, var(--accent) 72%, var(--text-muted));
  font-weight: 600;
}
.markdown-body strong {
  color: color-mix(in srgb, var(--text) 88%, var(--accent));
  font-weight: 700;
}
.markdown-body em { color: var(--text-muted); }
.markdown-body a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  text-decoration-color: color-mix(in srgb, var(--accent) 45%, transparent);
}
.markdown-body a:hover { text-decoration-color: var(--accent); }
.markdown-body img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 8px 0;
  border-radius: 6px;
}
.markdown-body .markdown-inline-code {
  background: var(--bg-subtle);
  border-radius: 5px;
  padding: 1px 5px;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.92em;
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--border) 70%, transparent);
}
.markdown-body .contains-task-list {
  padding-left: 0;
  list-style: none;
}
.markdown-body .task-list-item {
  display: block;
  position: relative;
  padding-left: 25px;
}
.markdown-body .task-list-item::marker { content: ""; }
.markdown-body .task-list-item > input[type="checkbox"],
.markdown-body .task-list-item > p:first-child > input[type="checkbox"]:first-child {
  appearance: none;
  position: absolute;
  left: 0;
  top: 0.35em;
  width: 14px;
  height: 14px;
  margin: 0;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg);
  display: inline-grid;
  place-content: center;
}
.markdown-body .task-list-item > input[type="checkbox"]:checked,
.markdown-body .task-list-item > p:first-child > input[type="checkbox"]:first-child:checked {
  border-color: color-mix(in srgb, var(--accent) 55%, var(--border));
  background: color-mix(in srgb, var(--accent) 10%, var(--bg));
}
.markdown-body .task-list-item > input[type="checkbox"]:checked::before,
.markdown-body .task-list-item > p:first-child > input[type="checkbox"]:first-child:checked::before {
  content: "";
  width: 4px;
  height: 8px;
  border: solid var(--accent);
  border-width: 0 1.5px 1.5px 0;
  transform: rotate(45deg) translateY(-1px);
}
.markdown-body blockquote {
  border-left: 3px solid color-mix(in srgb, var(--border) 75%, var(--text-muted));
  border-radius: 0 6px 6px 0;
  margin: 6px 0;
  padding: 6px 11px;
  background: var(--bg-subtle);
  color: var(--text-muted);
}
.markdown-table-wrap {
  width: 100%;
  margin: 8px 0;
  overflow-x: auto;
  overflow-y: hidden;
  border: 1px solid var(--border);
  border-radius: 7px;
}
.markdown-body table {
  border-collapse: separate;
  border-spacing: 0;
  min-width: 100%;
  font-size: 13px;
}
.markdown-body th, .markdown-body td {
  border: 0;
  border-bottom: 1px solid var(--border);
  padding: 6px 10px;
  text-align: left;
  vertical-align: top;
}
.markdown-body tr:last-child td { border-bottom: 0; }
.markdown-body th {
  background: var(--bg-panel);
  color: color-mix(in srgb, var(--text) 88%, var(--text-muted));
  font-weight: 650;
}
.markdown-body tbody tr:nth-child(even) td { background: var(--bg-subtle); }
.markdown-body hr {
  border: none;
  height: 1px;
  margin: 12px 0;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
}
.markdown-body .katex-display {
  margin: 0.6em 0;
  overflow-x: auto;
  overflow-y: hidden;
  padding: 2px 0;
}
.markdown-body .katex {
  font-size: 1.05em;
}
.markdown-user-message p {
  white-space: pre-wrap;
}

.markdown-custom-message {
  line-height: 1.32;
}
.markdown-custom-message p { margin: 0; }
.markdown-custom-message h1,
.markdown-custom-message h2,
.markdown-custom-message h3,
.markdown-custom-message h4,
.markdown-custom-message h5,
.markdown-custom-message h6 {
  margin: 4px 0 2px;
  line-height: 1.18;
}
.markdown-custom-message ul,
.markdown-custom-message ol {
  margin: 2px 0 3px;
}
.markdown-custom-message li { margin: 0; }
.markdown-custom-message blockquote {
  margin: 3px 0;
  padding: 4px 8px;
}
.markdown-custom-message .markdown-table-wrap,
.markdown-custom-message .markdown-code-block {
  margin: 4px 0;
}

.markdown-compaction-message {
  line-height: 1.5;
}
.markdown-compaction-message p { margin: 0 0 7px; }
.markdown-compaction-message h1,
.markdown-compaction-message h2,
.markdown-compaction-message h3,
.markdown-compaction-message h4,
.markdown-compaction-message h5,
.markdown-compaction-message h6 {
  margin: 8px 0 3px;
  line-height: 1.25;
}
.markdown-compaction-message ul,
.markdown-compaction-message ol {
  margin: 4px 0 8px;
}
.markdown-compaction-message li { margin: 2px 0; }
.markdown-compaction-message .markdown-table-wrap,
.markdown-compaction-message .markdown-code-block {
  margin: 6px 0;
}

.compaction-file-details {
  margin-top: 10px;
  padding-top: 8px;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 12px;
}
.compaction-file-details summary {
  cursor: pointer;
  font-weight: 600;
  line-height: 1.4;
}
.compaction-file-section {
  margin-top: 8px;
}
.compaction-file-title {
  margin-bottom: 4px;
  color: var(--text);
  font-size: 11px;
  font-weight: 650;
}
.compaction-file-list {
  max-height: 180px;
  margin: 0;
  padding: 7px 8px;
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-panel);
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.45;
  list-style: none;
}
.compaction-file-list li {
  overflow-wrap: anywhere;
}
.compaction-file-list li + li {
  margin-top: 3px;
}

.markdown-code-block {
  position: relative;
  margin: 6px 0;
  border: 1px solid var(--border);
  border-radius: 7px;
  overflow: hidden;
  background: var(--bg);
  box-shadow: 0 1px 0 color-mix(in srgb, var(--border) 42%, transparent);
}
.markdown-code-header {
  padding: 5px 10px;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 11px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}
.markdown-code-lang {
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-weight: 650;
}
.markdown-code-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}
.markdown-code-action {
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 2px 7px;
  background: var(--bg);
  color: var(--text-muted);
  cursor: pointer;
  font: inherit;
  font-size: 11px;
  line-height: 1.25;
}
.markdown-code-action:hover:not(:disabled) {
  color: var(--text);
  border-color: color-mix(in srgb, var(--border) 70%, var(--text-muted));
}
.markdown-code-action:disabled {
  color: var(--text-dim);
  cursor: not-allowed;
  opacity: 0.75;
}
.markdown-code-action.is-active {
  background: var(--bg-selected);
  color: var(--text);
}

.mermaid-block {
  padding: 12px;
  overflow-x: auto;
  background: color-mix(in srgb, var(--bg) 92%, var(--bg-panel));
}
.mermaid-block svg {
  display: block;
  max-width: none;
}
.mermaid-block-loading {
  min-height: 120px;
}
.mermaid-block-error {
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 12px;
}

.mermaid-preview-button {
  width: 100%;
  border: 0;
  color: inherit;
  cursor: zoom-in;
  text-align: left;
}
.mermaid-preview-button:hover {
  opacity: 0.85;
}
.mermaid-preview-button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}

.mermaid-zoom-dialog {
  width: 100vw;
  max-width: none;
  height: 100dvh;
  max-height: none;
  margin: 0;
  padding: 0;
  border: 0;
  background: var(--bg);
  color: var(--text);
}
.mermaid-zoom-dialog::backdrop {
  background: rgba(0, 0, 0, 0.35);
}
.mermaid-zoom-layout {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  height: 100%;
}
.mermaid-zoom-toolbar {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 40px;
  padding: 7px 10px;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border);
}
.mermaid-zoom-title {
  min-width: 0;
  overflow: hidden;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.mermaid-zoom-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
}
.mermaid-zoom-stepper {
  display: flex;
  align-items: center;
  height: 24px;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 5px;
  background: var(--bg);
}
.mermaid-zoom-stepper button,
.mermaid-zoom-icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  touch-action: manipulation;
}
.mermaid-zoom-stepper button {
  height: 22px;
}
.mermaid-zoom-stepper button + .mermaid-zoom-value,
.mermaid-zoom-value + button {
  border-left: 1px solid var(--border);
}
.mermaid-zoom-icon-button {
  flex: 0 0 24px;
  border: 1px solid var(--border);
  border-radius: 5px;
}
.mermaid-zoom-stepper button:hover:not(:disabled),
.mermaid-zoom-icon-button:hover {
  background: var(--bg-hover);
  color: var(--text);
}
.mermaid-zoom-stepper button:disabled {
  opacity: 0.35;
  cursor: default;
}
.mermaid-zoom-stepper button:focus-visible,
.mermaid-zoom-icon-button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}
.mermaid-zoom-value {
  min-width: 48px;
  height: 22px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 22px;
  text-align: center;
  user-select: none;
}
.mermaid-zoom-viewport {
  min-width: 0;
  min-height: 0;
  overflow: auto;
  padding: 24px;
  background: var(--bg);
  -webkit-overflow-scrolling: touch;
}
.mermaid-zoom-canvas {
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: var(--bg-panel);
  margin: 0 auto;
  transition: width 0.15s ease;
}
.mermaid-zoom-canvas svg {
  display: block;
  width: 100% !important;
  height: auto;
  max-width: none !important;
}

@media (max-width: 480px) {
  .mermaid-zoom-toolbar {
    padding-inline: 8px;
  }

  .mermaid-zoom-title {
    font-size: 10px;
  }

  .mermaid-zoom-viewport {
    padding: 12px;
  }
}

/* File viewer toolbar */
.file-viewer-toolbar {
  min-width: 0;
  min-height: 35px;
}

.file-viewer-path {
  flex: 1 1 auto;
  min-width: 48px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-viewer-meta {
  flex: 0 1 auto;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-viewer-live-indicator {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  flex: 0 0 7px;
}

.file-viewer-controls {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.file-viewer-actions {
  display: flex;
  align-items: center;
  height: 24px;
  gap: 4px;
  flex-shrink: 0;
  order: -1;
}

.file-viewer-mode-switch {
  display: flex;
  height: 24px;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 5px;
}

.file-viewer-mode-button {
  height: 22px;
  padding: 0 8px;
  border: 0;
  border-left: 1px solid var(--border);
  font: inherit;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0;
  cursor: pointer;
  white-space: nowrap;
}

.file-viewer-mode-button:first-child {
  border-left: 0;
}

.file-viewer-mode-button:hover {
  filter: brightness(1.08);
}

.file-viewer-icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  padding: 0;
  box-sizing: border-box;
  flex: 0 0 24px;
  border: 1px solid var(--border);
  border-radius: 5px;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  text-decoration: none;
}

.file-viewer-icon-button:hover {
  background: var(--bg-hover) !important;
  color: var(--text);
}

.file-viewer-icon-button:disabled {
  color: var(--text-dim);
  cursor: not-allowed;
  opacity: 0.55;
}

.file-viewer-icon-button:disabled:hover {
  background: transparent !important;
  color: var(--text-dim);
}

.file-viewer-mode-button:focus-visible,
.file-viewer-icon-button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}

.directory-picker-path:focus-visible {
  border-color: var(--accent) !important;
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 18%, transparent);
}

@media (max-width: 640px) {
  .file-viewer-meta {
    display: none;
  }
}

@media (max-width: 380px) {
  .file-viewer-toolbar {
    gap: 6px !important;
    padding-inline: 8px !important;
  }

  .file-viewer-mode-button {
    padding-inline: 6px;
  }
}

/* File viewer markdown preview — larger headings */
.markdown-file-preview h1 { font-size: 1.8em; }
.markdown-file-preview h2 { font-size: 1.4em; }
.markdown-file-preview h3 { font-size: 1.15em; }
.markdown-file-preview p { margin: 0 0 12px; }
.markdown-file-preview pre {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 12px 16px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 13px;
  margin: 12px 0;
}
.markdown-file-preview code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--bg-panel);
  padding: 1px 5px;
  border-radius: 3px;
}
.markdown-file-preview pre code {
  background: none;
  padding: 0;
}

/* syntax highlighter line numbers */
.markdown-body span.linenumber,
span.linenumber {
  color: var(--text-dim) !important;
  font-style: normal !important;
}

@keyframes drop-zone-in {
  from { opacity: 0; transform: scale(0.97); }
  to   { opacity: 1; transform: scale(1); }
}

@keyframes drop-icon-float {
  0%, 100% { transform: translateY(0px); }
  50%       { transform: translateY(-6px); }
}

@keyframes drop-ring-pulse {
  0%, 100% { opacity: 0.5; transform: scale(1); }
  50%       { opacity: 1;   transform: scale(1.06); }
}

@keyframes drop-ripple {
  0%   { transform: scale(0); opacity: 0.6; }
  100% { transform: scale(1); opacity: 0; }
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@keyframes notice-shelf-in {
  from {
    opacity: 0;
    height: 0;
    max-height: 0;
    min-height: 0;
    margin-bottom: 0;
    transform: translateY(-6px) scale(0.995);
  }
  to {
    opacity: 1;
    height: 60px;
    max-height: 60px;
    min-height: 60px;
    transform: translateY(0) scale(1);
  }
}

@keyframes notice-shelf-out {
  from {
    opacity: 1;
    height: 60px;
    max-height: 60px;
    min-height: 60px;
    transform: translateY(0) scale(1);
  }
  to {
    opacity: 0;
    height: 0;
    max-height: 0;
    min-height: 0;
    margin-bottom: 0;
    transform: translateY(-5px) scale(0.995);
  }
}

@media (prefers-reduced-motion: reduce) {
  .notice-shelf-item {
    animation-duration: 0.001ms !important;
  }
}

@keyframes saved-pop {
  0%   { transform: scale(1); box-shadow: 0 0 0 0 rgba(74, 222, 128, 0.55); }
  40%  { transform: scale(1.08); box-shadow: 0 0 0 6px rgba(74, 222, 128, 0.25); }
  100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(74, 222, 128, 0); }
}

@keyframes saved-check-draw {
  from { stroke-dashoffset: 18; opacity: 0; }
  to   { stroke-dashoffset: 0;  opacity: 1; }
}

/* Desktop sidebar: animate width */
@media (min-width: 641px) {
  .sidebar-overlay-backdrop {
    display: none !important;
  }
  .sidebar-container {
    position: relative;
    overflow: hidden;
    transition: width 0.2s ease, min-width 0.2s ease;
  }
  .sidebar-container.sidebar-open {
    width: 260px;
    min-width: 260px;
  }
  .sidebar-container.sidebar-closed {
    width: 0;
    min-width: 0;
    border-right: none !important;
  }
  /* keep inner content at fixed width so it doesn't reflow during animation */
  .sidebar-container > * {
    width: 260px;
    min-width: 260px;
  }
}


/* Right panel: animate width */
@media (min-width: 641px) {
  .right-panel-container {
    overflow: hidden;
    transition: width 0.2s ease, min-width 0.2s ease;
    flex-shrink: 0;
  }
  .right-panel-container.right-panel-open {
    width: 42%;
    min-width: 300px;
  }
  .right-panel-container.right-panel-closed {
    width: 0;
    min-width: 0;
    border-left: none !important;
  }
  /* keep inner content at fixed width so it doesn't reflow during animation */
  .right-panel-container > * {
    width: 42vw;
    min-width: 300px;
  }
}

/* Mobile sidebar: slide in/out as overlay */
@media (max-width: 640px) {
  .chat-stats-center {
    display: none !important;
  }
  .sidebar-container {
    position: fixed !important;
    top: 0;
    left: 0;
    bottom: 0;
    width: 280px;
    max-width: 85vw;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
  }
  .sidebar-container.sidebar-open {
    transform: translateX(0);
    box-shadow: 4px 0 20px rgba(0,0,0,0.15);
  }
  .sidebar-container.sidebar-closed {
    transform: translateX(-100%);
    box-shadow: none;
  }

  .right-panel-container {
    overflow: hidden;
    transition: width 0.2s ease, min-width 0.2s ease;
    flex-shrink: 0;
  }
  .right-panel-container.right-panel-open {
    width: 100%;
    min-width: 0;
  }
  .right-panel-container.right-panel-closed {
    width: 0 !important;
    min-width: 0 !important;
    border-left: none !important;
    display: none !important;
  }
  .directory-picker-back,
  .directory-picker-entry,
  .directory-picker-action {
    min-height: 44px !important;
  }
  .directory-picker-back {
    min-width: 44px !important;
  }
  .directory-picker-footer {
    flex-wrap: wrap;
    padding-bottom: max(10px, env(safe-area-inset-bottom)) !important;
  }
}