:root {
  color-scheme: light;
  --app-bg:
    radial-gradient(circle at top left, rgba(59, 130, 246, 0.12), transparent 24%),
    radial-gradient(circle at top right, rgba(14, 165, 233, 0.1), transparent 20%),
    linear-gradient(180deg, #f8fafc 0%, #eef2ff 100%);
  --frame-bg: rgba(255, 255, 255, 0.74);
  --frame-header: rgba(255, 255, 255, 0.52);
  --pane-bg: rgba(255, 255, 255, 0.86);
  --pane-muted: rgba(248, 250, 252, 0.86);
  --preview-bg: rgba(255, 255, 255, 0.9);
  --border-soft: rgba(148, 163, 184, 0.24);
  --border-strong: rgba(148, 163, 184, 0.38);
  --text-strong: #0f172a;
  --text-base: #334155;
  --text-muted: #64748b;
  --accent: #0ea5e9;
  --accent-strong: #0369a1;
  --success: #059669;
  --warning: #d97706;
  --shadow-app: 0 24px 80px rgba(15, 23, 42, 0.14);
  --shadow-pane: 0 18px 40px rgba(15, 23, 42, 0.08);
}

.dark {
  color-scheme: dark;
  --app-bg:
    radial-gradient(circle at top left, rgba(59, 130, 246, 0.16), transparent 24%),
    radial-gradient(circle at top right, rgba(14, 165, 233, 0.12), transparent 20%),
    linear-gradient(180deg, #020617 0%, #0f172a 100%);
  --frame-bg: rgba(2, 6, 23, 0.74);
  --frame-header: rgba(15, 23, 42, 0.7);
  --pane-bg: rgba(15, 23, 42, 0.84);
  --pane-muted: rgba(15, 23, 42, 0.72);
  --preview-bg: rgba(2, 6, 23, 0.72);
  --border-soft: rgba(71, 85, 105, 0.45);
  --border-strong: rgba(100, 116, 139, 0.6);
  --text-strong: #f8fafc;
  --text-base: #cbd5e1;
  --text-muted: #94a3b8;
  --accent: #38bdf8;
  --accent-strong: #7dd3fc;
  --success: #34d399;
  --warning: #fbbf24;
  --shadow-app: 0 28px 90px rgba(0, 0, 0, 0.34);
  --shadow-pane: 0 20px 42px rgba(0, 0, 0, 0.22);
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  background: var(--app-bg);
  color: var(--text-strong);
  overflow: hidden;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

#app {
  min-height: 100%;
}

textarea,
button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.7;
}

.hidden {
  display: none;
}

.app-shell {
  min-height: 100vh;
  padding: 12px;
}

.app-frame {
  display: flex;
  flex-direction: column;
  height: calc(100vh - 24px);
  max-width: 1680px;
  margin: 0 auto;
  border: 1px solid var(--border-soft);
  border-radius: 30px;
  background: var(--frame-bg);
  box-shadow: var(--shadow-app);
  backdrop-filter: blur(22px);
  overflow: hidden;
}

.app-topbar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  padding: 16px 18px;
  border-bottom: 1px solid var(--border-soft);
  background: linear-gradient(180deg, var(--frame-header) 0%, transparent 100%);
}

.app-brand {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  min-width: 0;
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  border-radius: 17px;
  background: linear-gradient(135deg, #0ea5e9 0%, #4f46e5 100%);
  color: #ffffff;
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  box-shadow: 0 18px 35px rgba(14, 165, 233, 0.26);
  flex-shrink: 0;
}

.brand-copy {
  min-width: 0;
}

.brand-title-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.brand-title {
  margin: 0;
  font-size: 1.18rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-strong);
}

.brand-subtitle {
  margin: 4px 0 0;
  color: var(--text-muted);
  font-size: 0.93rem;
  line-height: 1.5;
  max-width: 900px;
}

.brand-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.topbar-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
}

.app-btn,
.toolbar-btn {
  appearance: none;
  border: 1px solid var(--border-soft);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.74);
  color: var(--text-base);
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease, box-shadow 160ms ease, color 160ms ease;
}

.dark .app-btn,
.dark .toolbar-btn {
  background: rgba(15, 23, 42, 0.76);
}

.app-btn:hover,
.toolbar-btn:hover {
  transform: translateY(-1px);
  border-color: var(--border-strong);
}

.app-btn:focus-visible,
.toolbar-btn:focus-visible,
.editor-textarea:focus-visible {
  outline: none;
  box-shadow: 0 0 0 4px rgba(14, 165, 233, 0.14);
}

.app-btn {
  padding: 0.72rem 1rem;
  font-size: 0.92rem;
  font-weight: 700;
  line-height: 1;
  box-shadow: 0 8px 18px rgba(15, 23, 42, 0.06);
}

.app-btn--compact {
  padding: 0.62rem 0.9rem;
  font-size: 0.84rem;
}

.app-btn--primary {
  color: #ffffff;
  border-color: transparent;
  background: linear-gradient(135deg, #0ea5e9 0%, #2563eb 100%);
  box-shadow: 0 14px 28px rgba(14, 165, 233, 0.26);
}

.app-btn--primary:hover {
  filter: brightness(1.03);
}

.toolbar-btn {
  padding: 0.5rem 0.76rem;
  font-size: 0.78rem;
  font-weight: 700;
  line-height: 1;
  white-space: nowrap;
}

.toolbar-btn--accent {
  color: var(--accent-strong);
  background: rgba(14, 165, 233, 0.08);
  border-color: rgba(14, 165, 233, 0.24);
}

.dark .toolbar-btn--accent {
  color: var(--accent-strong);
}

.toolbar-btn.is-active,
.app-btn.is-active {
  border-color: rgba(14, 165, 233, 0.5);
  box-shadow: 0 0 0 4px rgba(14, 165, 233, 0.12);
}

.toolbar-strip {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 18px;
  border-bottom: 1px solid var(--border-soft);
  background: linear-gradient(180deg, rgba(248, 250, 252, 0.5) 0%, rgba(248, 250, 252, 0.18) 100%);
  overflow-x: auto;
}

.dark .toolbar-strip {
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.52) 0%, rgba(15, 23, 42, 0.16) 100%);
}

.toolbar-group {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  padding-right: 12px;
  border-right: 1px solid var(--border-soft);
}

.toolbar-group:last-child {
  padding-right: 0;
  border-right: none;
}

.toolbar-label {
  margin-right: 2px;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.workspace-wrap {
  flex: 1;
  min-height: 0;
  padding: 12px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.08) 0%, transparent 100%);
}

.workspace-grid {
  display: grid;
  align-items: stretch;
  gap: 0;
  width: 100%;
  height: 100%;
  min-height: 0;
}

.pane {
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  border: 1px solid var(--border-soft);
  border-radius: 22px;
  background: var(--pane-bg);
  box-shadow: var(--shadow-pane);
}

.pane-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border-soft);
  background: linear-gradient(180deg, rgba(248, 250, 252, 0.42) 0%, transparent 100%);
}

.dark .pane-header {
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.42) 0%, transparent 100%);
}

.pane-title {
  margin: 0;
  color: var(--text-base);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.pane-subtitle {
  margin: 5px 0 0;
  color: var(--text-muted);
  font-size: 0.86rem;
  line-height: 1.45;
}

.pane-header-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.pane-body {
  flex: 1;
  min-height: 0;
  position: relative;
}

.editor-body {
  display: flex;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.2) 0%, transparent 100%);
}

.dark .editor-body {
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.28) 0%, transparent 100%);
}

.editor-gutter {
  width: 58px;
  flex-shrink: 0;
  overflow: hidden;
  border-right: 1px solid var(--border-soft);
  background: rgba(148, 163, 184, 0.08);
  padding: 14px 10px;
  text-align: right;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', monospace;
  font-size: 12px;
  line-height: 1.75;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

.editor-gutter.is-muted {
  opacity: 0.64;
}

.editor-gutter > div > div {
  height: 1.75rem;
}

.editor-textarea {
  width: 100%;
  height: 100%;
  padding: 14px 18px;
  border: 0;
  resize: none;
  background: transparent;
  color: var(--text-strong);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', monospace;
  font-size: 14px;
  line-height: 1.75;
  tab-size: 2;
  caret-color: var(--accent);
}

.editor-textarea::selection,
.markdown-body ::selection {
  background: rgba(14, 165, 233, 0.24);
}

.editor-textarea.is-wrapped {
  white-space: pre-wrap;
  word-break: break-word;
}

.editor-textarea::placeholder {
  color: var(--text-muted);
}

.drag-divider {
  position: relative;
  width: 14px;
  cursor: col-resize;
  user-select: none;
}

.drag-divider::before {
  content: '';
  position: absolute;
  top: 18px;
  bottom: 18px;
  left: 50%;
  width: 2px;
  margin-left: -1px;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.34);
  transition: background 160ms ease, transform 160ms ease;
}

.drag-divider::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 10px;
  height: 68px;
  margin-left: -5px;
  margin-top: -34px;
  border-radius: 999px;
  background: linear-gradient(180deg, rgba(148, 163, 184, 0.06) 0%, rgba(148, 163, 184, 0.2) 100%);
}

.drag-divider:hover::before,
.drag-divider.is-dragging::before {
  transform: scaleY(1.06);
  background: rgba(14, 165, 233, 0.76);
}

.drop-overlay {
  position: absolute;
  inset: 12px;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px dashed rgba(14, 165, 233, 0.54);
  border-radius: 18px;
  background: rgba(14, 165, 233, 0.12);
  pointer-events: none;
}

.drop-overlay__content {
  padding: 14px 16px;
  border-radius: 16px;
  border: 1px solid rgba(14, 165, 233, 0.2);
  background: rgba(255, 255, 255, 0.88);
  color: var(--text-base);
  font-size: 0.95rem;
  font-weight: 700;
  box-shadow: 0 14px 28px rgba(15, 23, 42, 0.08);
}

.dark .drop-overlay__content {
  background: rgba(2, 6, 23, 0.88);
}

.preview-scroller {
  overflow: auto;
  padding: 18px;
  background: linear-gradient(180deg, rgba(248, 250, 252, 0.16) 0%, transparent 100%);
}

.dark .preview-scroller {
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.24) 0%, transparent 100%);
}

.preview-sheet {
  min-height: 100%;
  border: 1px solid var(--border-soft);
  border-radius: 18px;
  background: var(--preview-bg);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.28);
  padding: 24px clamp(18px, 3vw, 34px);
}

.status-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0.42rem 0.72rem;
  border: 1px solid var(--border-soft);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.68);
  color: var(--text-base);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1;
}

.dark .status-chip {
  background: rgba(15, 23, 42, 0.68);
}

.chip--success {
  border-color: rgba(5, 150, 105, 0.24);
  background: rgba(16, 185, 129, 0.1);
  color: var(--success);
}

.chip--warning {
  border-color: rgba(217, 119, 6, 0.24);
  background: rgba(245, 158, 11, 0.12);
  color: var(--warning);
}

.chip--accent {
  border-color: rgba(14, 165, 233, 0.26);
  background: rgba(14, 165, 233, 0.1);
  color: var(--accent-strong);
}

.stat-block {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0.58rem 0.82rem;
  border-radius: 14px;
  border: 1px solid var(--border-soft);
  background: rgba(255, 255, 255, 0.68);
  box-shadow: 0 8px 18px rgba(15, 23, 42, 0.04);
}

.dark .stat-block {
  background: rgba(15, 23, 42, 0.68);
}

.stat-block__label {
  color: var(--text-muted);
  font-size: 0.76rem;
  font-weight: 700;
}

.stat-block__value {
  color: var(--text-strong);
  font-size: 0.8rem;
  font-weight: 800;
}

.app-statusbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding: 10px 18px 14px;
  border-top: 1px solid var(--border-soft);
  background: linear-gradient(180deg, transparent 0%, rgba(255, 255, 255, 0.12) 100%);
}

.dark .app-statusbar {
  background: linear-gradient(180deg, transparent 0%, rgba(15, 23, 42, 0.18) 100%);
}

.status-cluster {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.status-cluster--hints {
  justify-content: flex-end;
}

.toast-wrap {
  position: fixed;
  top: 18px;
  right: 18px;
  z-index: 50;
  pointer-events: none;
}

.app-toast {
  max-width: 320px;
  padding: 0.95rem 1rem;
  border-radius: 18px;
  border: 1px solid var(--border-soft);
  background: rgba(255, 255, 255, 0.92);
  color: var(--text-base);
  font-size: 0.9rem;
  font-weight: 700;
  box-shadow: 0 18px 34px rgba(15, 23, 42, 0.16);
  backdrop-filter: blur(16px);
}

.dark .app-toast {
  background: rgba(2, 6, 23, 0.92);
}

.app-toast--success {
  border-color: rgba(16, 185, 129, 0.24);
}

.app-toast--error {
  border-color: rgba(239, 68, 68, 0.28);
  color: #dc2626;
}

.dark .app-toast--error {
  color: #fecaca;
}

.custom-scroll {
  scrollbar-width: thin;
  scrollbar-color: rgba(148, 163, 184, 0.52) transparent;
}

.custom-scroll::-webkit-scrollbar {
  width: 12px;
  height: 12px;
}

.custom-scroll::-webkit-scrollbar-track {
  background: transparent;
}

.custom-scroll::-webkit-scrollbar-thumb {
  border: 3px solid transparent;
  border-radius: 999px;
  background-clip: padding-box;
  background: rgba(148, 163, 184, 0.46);
}

.custom-scroll::-webkit-scrollbar-thumb:hover {
  background: rgba(100, 116, 139, 0.66);
}

.markdown-body {
  max-width: none;
  font-size: 0.98rem;
  line-height: 1.8;
  color: var(--text-base);
}

.markdown-body > * + * {
  margin-top: 1.1rem;
}

.markdown-body h1,
.markdown-body h2,
.markdown-body h3,
.markdown-body h4,
.markdown-body h5,
.markdown-body h6 {
  margin: 0;
  color: var(--text-strong);
  font-weight: 800;
  line-height: 1.24;
  letter-spacing: -0.025em;
  scroll-margin-top: 1rem;
}

.markdown-body h1 {
  margin-top: 0.35rem;
  margin-bottom: 0.8rem;
  padding-bottom: 0.75rem;
  font-size: clamp(1.7rem, 2vw, 2rem);
  border-bottom: 1px solid var(--border-soft);
}

.markdown-body h2 {
  margin-top: 1.9rem;
  padding-bottom: 0.5rem;
  font-size: 1.42rem;
  border-bottom: 1px solid rgba(148, 163, 184, 0.22);
}

.markdown-body h3 {
  margin-top: 1.65rem;
  font-size: 1.18rem;
}

.markdown-body h4 {
  font-size: 1.03rem;
}

.markdown-body p,
.markdown-body ul,
.markdown-body ol,
.markdown-body blockquote,
.markdown-body table,
.markdown-body pre,
.markdown-body hr {
  margin-top: 1rem;
}

.markdown-body a {
  color: var(--accent-strong);
  text-decoration: none;
  font-weight: 600;
}

.markdown-body a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.markdown-body strong {
  color: var(--text-strong);
}

.markdown-body em {
  color: var(--text-base);
}

.markdown-body ul,
.markdown-body ol {
  padding-left: 1.45rem;
}

.markdown-body ul {
  list-style: disc;
}

.markdown-body ol {
  list-style: decimal;
}

.markdown-body li + li {
  margin-top: 0.42rem;
}

.markdown-body input[type='checkbox'] {
  width: 1rem;
  height: 1rem;
  margin-right: 0.55rem;
  vertical-align: middle;
  accent-color: var(--accent);
}

.markdown-body blockquote {
  border-left: 4px solid rgba(14, 165, 233, 0.62);
  border-radius: 0 14px 14px 0;
  padding: 0.92rem 1rem;
  background: rgba(14, 165, 233, 0.08);
  color: var(--text-strong);
}

.markdown-body hr {
  border: none;
  border-top: 1px solid rgba(148, 163, 184, 0.26);
}

.markdown-body table {
  display: block;
  width: 100%;
  overflow-x: auto;
  border-collapse: collapse;
  border: 1px solid rgba(148, 163, 184, 0.24);
  border-radius: 1rem;
  background: rgba(255, 255, 255, 0.68);
  white-space: nowrap;
}

.dark .markdown-body table {
  background: rgba(15, 23, 42, 0.6);
}

.markdown-body th,
.markdown-body td {
  border-bottom: 1px solid rgba(148, 163, 184, 0.22);
  padding: 0.78rem 0.92rem;
  text-align: left;
}

.markdown-body th {
  background: rgba(15, 23, 42, 0.04);
  color: var(--text-strong);
  font-weight: 800;
}

.dark .markdown-body th {
  background: rgba(255, 255, 255, 0.04);
}

.markdown-body tr:last-child td {
  border-bottom: none;
}

.markdown-body code:not(pre code) {
  display: inline-block;
  margin: 0 0.08rem;
  padding: 0.18rem 0.42rem;
  border-radius: 0.5rem;
  font-size: 0.9em;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', monospace;
  background: rgba(15, 23, 42, 0.06);
  color: var(--text-strong);
}

.dark .markdown-body code:not(pre code) {
  background: rgba(148, 163, 184, 0.14);
}

.markdown-body pre {
  border-radius: 1rem;
  overflow: auto;
  border: 1px solid rgba(148, 163, 184, 0.18);
}

.markdown-body pre code {
  font-size: 0.92rem;
  line-height: 1.68;
}

.markdown-body img {
  display: block;
  max-width: 100%;
  border-radius: 1rem;
  border: 1px solid rgba(148, 163, 184, 0.18);
}

.render-error {
  white-space: pre-wrap;
  border-radius: 1rem;
  border: 1px solid rgba(239, 68, 68, 0.24);
  background: rgba(239, 68, 68, 0.08);
  color: #b91c1c;
  padding: 1rem 1.1rem;
}

.dark .render-error {
  background: rgba(239, 68, 68, 0.12);
  color: #fecaca;
}

@media (max-width: 1180px) {
  .app-topbar {
    gap: 14px;
  }

  .brand-subtitle {
    max-width: 620px;
  }
}

@media (max-width: 1024px) {
  .app-topbar {
    padding: 14px 16px;
  }

  .topbar-actions {
    width: 100%;
    justify-content: flex-start;
  }

  .workspace-wrap {
    padding: 10px;
  }

  .preview-sheet {
    padding: 20px 22px;
  }

  .markdown-body {
    font-size: 0.95rem;
  }
}

@media (max-height: 820px) {
  .app-shell {
    padding: 8px;
  }

  .app-frame {
    height: calc(100vh - 16px);
  }

  .app-topbar {
    padding: 12px 14px;
  }

  .toolbar-strip {
    padding: 10px 14px;
  }

  .workspace-wrap {
    padding: 10px;
  }

  .pane-header {
    padding: 12px 14px;
  }

  .preview-scroller {
    padding: 14px;
  }

  .app-statusbar {
    padding: 10px 14px 12px;
  }

  .brand-subtitle {
    display: none;
  }
}

@media (max-width: 860px) {
  body {
    overflow: auto;
  }

  .app-shell {
    padding: 8px;
  }

  .app-frame {
    height: auto;
    min-height: calc(100vh - 16px);
  }

  .workspace-wrap {
    min-height: 860px;
  }

  .workspace-grid {
    grid-template-columns: 1fr !important;
    grid-auto-rows: minmax(0, 1fr);
    gap: 10px;
  }

  .drag-divider {
    display: none;
  }

  .pane {
    min-height: 380px;
  }

  .status-cluster--hints {
    justify-content: flex-start;
  }
}


/* Patch 1 enhancements */
.app-btn,
.toolbar-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.46rem;
}

.btn-icon,
.toolbar-btn__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.1em;
  font-weight: 800;
}

.toolbar-btn__label {
  display: inline-flex;
  align-items: center;
}

.toolbar-btn:disabled,
.app-btn:disabled {
  transform: none;
  box-shadow: none;
}

.toolbar-group--wrap {
  flex-wrap: wrap;
}

.toolbar-label--inline {
  margin-right: 0;
  letter-spacing: 0.12em;
}

.toolbar-select-wrap {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding-left: 2px;
  min-height: 38px;
}

.toolbar-select {
  min-width: 102px;
  height: 36px;
  padding: 0 0.8rem;
  border: 1px solid var(--border-soft);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.74);
  color: var(--text-base);
  outline: none;
  box-shadow: 0 8px 18px rgba(15, 23, 42, 0.04);
}

.dark .toolbar-select {
  background: rgba(15, 23, 42, 0.76);
}

.toolbar-select:focus-visible,
.findbar-input:focus-visible {
  outline: none;
  box-shadow: 0 0 0 4px rgba(14, 165, 233, 0.14);
  border-color: rgba(14, 165, 233, 0.5);
}

.findbar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-soft);
  background: linear-gradient(180deg, rgba(14, 165, 233, 0.06) 0%, rgba(255, 255, 255, 0) 100%);
}

.dark .findbar {
  background: linear-gradient(180deg, rgba(14, 165, 233, 0.08) 0%, rgba(2, 6, 23, 0) 100%);
}

.findbar__inputs,
.findbar__actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.findbar-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.findbar-field__label {
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.findbar-input {
  min-width: 190px;
  height: 40px;
  padding: 0 0.86rem;
  border: 1px solid var(--border-soft);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.74);
  color: var(--text-strong);
  outline: none;
}

.dark .findbar-input {
  background: rgba(15, 23, 42, 0.76);
}

.editor-input-wrap {
  position: relative;
  flex: 1;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
}

.editor-current-line {
  position: absolute;
  left: 10px;
  right: 12px;
  top: 0;
  height: 24px;
  z-index: 0;
  pointer-events: none;
  border-radius: 12px;
  background: rgba(14, 165, 233, 0.08);
  border: 1px solid rgba(14, 165, 233, 0.08);
  transition: transform 120ms ease, opacity 120ms ease;
}

.dark .editor-current-line {
  background: rgba(56, 189, 248, 0.08);
  border-color: rgba(56, 189, 248, 0.12);
}

.editor-current-line.is-hidden {
  opacity: 0;
}

.editor-gutter {
  line-height: 24px;
}

.editor-line-number {
  height: 24px;
  transition: color 160ms ease, transform 160ms ease;
}

.editor-line-number.is-current {
  color: var(--accent-strong);
  font-weight: 800;
  transform: translateX(-2px);
}

.editor-textarea {
  position: relative;
  z-index: 1;
  line-height: 24px;
}

.editor-gutter > div > div {
  height: 24px;
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 60;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(15, 23, 42, 0.46);
  backdrop-filter: blur(6px);
}

.modal-card {
  width: min(860px, 100%);
  max-height: min(80vh, 860px);
  border: 1px solid var(--border-soft);
  border-radius: 28px;
  background: var(--frame-bg);
  box-shadow: var(--shadow-app);
  overflow: hidden;
}

.modal-card__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 20px;
  border-bottom: 1px solid var(--border-soft);
  background: linear-gradient(180deg, var(--frame-header) 0%, transparent 100%);
}

.modal-card__title {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-strong);
}

.modal-card__subtitle {
  margin: 6px 0 0;
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.55;
}

.modal-card__body {
  overflow: auto;
  padding: 20px;
}

.shortcut-group + .shortcut-group {
  margin-top: 18px;
}

.shortcut-group__title {
  margin: 0 0 12px;
  color: var(--text-strong);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.shortcut-list {
  display: grid;
  gap: 10px;
}

.shortcut-item {
  display: grid;
  grid-template-columns: minmax(150px, 220px) 1fr;
  gap: 14px;
  align-items: center;
  padding: 12px 14px;
  border: 1px solid var(--border-soft);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.56);
}

.dark .shortcut-item {
  background: rgba(15, 23, 42, 0.54);
}

.shortcut-item__key {
  display: inline-flex;
  align-items: center;
  justify-content: flex-start;
  width: fit-content;
  padding: 0.46rem 0.66rem;
  border-radius: 10px;
  border: 1px solid var(--border-soft);
  background: rgba(15, 23, 42, 0.06);
  color: var(--text-strong);
  font-size: 0.86rem;
  font-weight: 800;
  box-shadow: inset 0 -1px 0 rgba(148, 163, 184, 0.24);
}

.dark .shortcut-item__key {
  background: rgba(255, 255, 255, 0.06);
}

.shortcut-item__label {
  color: var(--text-base);
  font-size: 0.95rem;
  line-height: 1.5;
}

.workspace-grid.is-editor-only {
  grid-template-columns: minmax(0, 1fr) !important;
}

.app-shell.is-zen .app-topbar {
  padding-top: 12px;
  padding-bottom: 12px;
}

.app-shell.is-zen .brand-subtitle,
.app-shell.is-zen .status-cluster--hints {
  display: none;
}

.app-shell.is-zen .brand-meta {
  margin-top: 8px;
}

.app-shell.is-zen .workspace-wrap {
  padding: 10px;
}

.app-shell.is-zen .toolbar-strip {
  padding-top: 10px;
  padding-bottom: 10px;
}

.app-shell.is-zen .app-statusbar {
  padding-top: 8px;
  padding-bottom: 10px;
}

.app-shell.is-zen .pane--editor {
  border-radius: 24px;
}

@media (max-width: 1180px) {
  .toolbar-group--wrap {
    gap: 6px;
  }

  .toolbar-btn {
    padding-inline: 0.68rem;
  }
}

@media (max-width: 1024px) {
  .findbar {
    padding: 10px 14px;
  }

  .findbar-input {
    min-width: 170px;
  }

  .shortcut-item {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 860px) {
  .findbar__inputs,
  .findbar__actions {
    width: 100%;
  }

  .findbar-field {
    flex: 1;
  }

  .findbar-input {
    min-width: 0;
    width: 100%;
  }

  .modal-backdrop {
    padding: 12px;
  }

  .modal-card__header,
  .modal-card__body {
    padding: 16px;
  }
}

/* Patch 2 enhancements */
.markdown-body .md-callout {
  position: relative;
  border-left-width: 4px;
  border-left-style: solid;
  border-radius: 0 16px 16px 0;
  padding: 1rem 1rem 1rem 1.05rem;
}

.markdown-body .md-callout > :first-child {
  margin-top: 0;
}

.markdown-body .md-callout > :last-child {
  margin-bottom: 0;
}

.markdown-body .callout-label {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin-bottom: 0.7rem;
  padding: 0.28rem 0.62rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.markdown-body .md-callout--note {
  border-left-color: #0ea5e9;
  background: rgba(14, 165, 233, 0.08);
}

.markdown-body .md-callout--note .callout-label {
  background: rgba(14, 165, 233, 0.14);
  color: #0369a1;
}

.markdown-body .md-callout--tip {
  border-left-color: #10b981;
  background: rgba(16, 185, 129, 0.08);
}

.markdown-body .md-callout--tip .callout-label {
  background: rgba(16, 185, 129, 0.14);
  color: #047857;
}

.markdown-body .md-callout--important {
  border-left-color: #4f46e5;
  background: rgba(79, 70, 229, 0.08);
}

.markdown-body .md-callout--important .callout-label {
  background: rgba(79, 70, 229, 0.14);
  color: #4338ca;
}

.markdown-body .md-callout--warning,
.markdown-body .md-callout--caution {
  border-left-color: #f59e0b;
  background: rgba(245, 158, 11, 0.1);
}

.markdown-body .md-callout--warning .callout-label,
.markdown-body .md-callout--caution .callout-label {
  background: rgba(245, 158, 11, 0.16);
  color: #b45309;
}

.dark .markdown-body .md-callout--note .callout-label {
  color: #bae6fd;
}

.dark .markdown-body .md-callout--tip .callout-label {
  color: #a7f3d0;
}

.dark .markdown-body .md-callout--important .callout-label {
  color: #c7d2fe;
}

.dark .markdown-body .md-callout--warning .callout-label,
.dark .markdown-body .md-callout--caution .callout-label {
  color: #fde68a;
}

.modal-card--composer {
  width: min(760px, 100%);
}

.modal-card__body--composer {
  display: grid;
  gap: 16px;
}

.modal-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  padding: 16px 20px 20px;
  border-top: 1px solid var(--border-soft);
  background: linear-gradient(180deg, rgba(248, 250, 252, 0.26) 0%, transparent 100%);
}

.dark .modal-card__footer {
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.32) 0%, transparent 100%);
}

.modal-card__actions {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.composer-description {
  margin: 0;
  color: var(--text-base);
  font-size: 0.94rem;
  line-height: 1.62;
}

.composer-field {
  display: grid;
  gap: 8px;
}

.composer-field__label {
  color: var(--text-muted);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.composer-field__hint {
  color: var(--text-muted);
  font-size: 0.82rem;
  line-height: 1.5;
}

.composer-input,
.composer-select,
.composer-textarea,
.composer-file-input {
  width: 100%;
  border: 1px solid var(--border-soft);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.74);
  color: var(--text-strong);
  outline: none;
  box-shadow: 0 8px 18px rgba(15, 23, 42, 0.04);
}

.dark .composer-input,
.dark .composer-select,
.dark .composer-textarea,
.dark .composer-file-input {
  background: rgba(15, 23, 42, 0.76);
}

.composer-input,
.composer-select {
  height: 42px;
  padding: 0 0.92rem;
}

.composer-textarea {
  min-height: 160px;
  padding: 0.88rem 0.96rem;
  resize: vertical;
  line-height: 1.6;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', monospace;
}

.composer-file-input {
  padding: 0.72rem 0.82rem;
}

.composer-input:focus-visible,
.composer-select:focus-visible,
.composer-textarea:focus-visible,
.composer-file-input:focus-visible {
  box-shadow: 0 0 0 4px rgba(14, 165, 233, 0.14);
  border-color: rgba(14, 165, 233, 0.48);
}

.composer-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.composer-grid--tight {
  gap: 12px;
}

.composer-mode-switch {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.composer-chip-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

@media (max-width: 860px) {
  .modal-card__footer {
    padding: 14px 16px 16px;
  }

  .modal-card__actions {
    width: 100%;
    justify-content: stretch;
  }

  .modal-card__actions .app-btn {
    flex: 1;
  }

  .composer-grid {
    grid-template-columns: 1fr;
  }
}

/* ===== Patch 3: command palette, utility sidebar, focus mode, accent presets ===== */
:root {
  --accent-rgb: 14, 165, 233;
  --accent-strong-rgb: 3, 105, 161;
  --accent-2: #2563eb;
  --brand-gradient: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
}

html[data-accent='sky'] {
  --accent: #0ea5e9;
  --accent-strong: #0369a1;
  --accent-2: #2563eb;
  --accent-rgb: 14, 165, 233;
  --accent-strong-rgb: 3, 105, 161;
  --brand-gradient: linear-gradient(135deg, #0ea5e9 0%, #2563eb 100%);
  --app-bg:
    radial-gradient(circle at top left, rgba(59, 130, 246, 0.12), transparent 24%),
    radial-gradient(circle at top right, rgba(14, 165, 233, 0.1), transparent 20%),
    linear-gradient(180deg, #f8fafc 0%, #eef2ff 100%);
}

html.dark[data-accent='sky'] {
  --app-bg:
    radial-gradient(circle at top left, rgba(59, 130, 246, 0.16), transparent 24%),
    radial-gradient(circle at top right, rgba(14, 165, 233, 0.12), transparent 20%),
    linear-gradient(180deg, #020617 0%, #0f172a 100%);
}

html[data-accent='violet'] {
  --accent: #8b5cf6;
  --accent-strong: #6d28d9;
  --accent-2: #4f46e5;
  --accent-rgb: 139, 92, 246;
  --accent-strong-rgb: 109, 40, 217;
  --brand-gradient: linear-gradient(135deg, #8b5cf6 0%, #4f46e5 100%);
  --app-bg:
    radial-gradient(circle at top left, rgba(139, 92, 246, 0.12), transparent 24%),
    radial-gradient(circle at top right, rgba(79, 70, 229, 0.1), transparent 20%),
    linear-gradient(180deg, #faf5ff 0%, #eef2ff 100%);
}

html.dark[data-accent='violet'] {
  --app-bg:
    radial-gradient(circle at top left, rgba(139, 92, 246, 0.18), transparent 24%),
    radial-gradient(circle at top right, rgba(79, 70, 229, 0.14), transparent 20%),
    linear-gradient(180deg, #020617 0%, #111827 100%);
}

html[data-accent='emerald'] {
  --accent: #10b981;
  --accent-strong: #047857;
  --accent-2: #059669;
  --accent-rgb: 16, 185, 129;
  --accent-strong-rgb: 4, 120, 87;
  --brand-gradient: linear-gradient(135deg, #10b981 0%, #059669 100%);
  --app-bg:
    radial-gradient(circle at top left, rgba(16, 185, 129, 0.12), transparent 24%),
    radial-gradient(circle at top right, rgba(5, 150, 105, 0.1), transparent 20%),
    linear-gradient(180deg, #f0fdf4 0%, #ecfdf5 100%);
}

html.dark[data-accent='emerald'] {
  --app-bg:
    radial-gradient(circle at top left, rgba(16, 185, 129, 0.18), transparent 24%),
    radial-gradient(circle at top right, rgba(5, 150, 105, 0.14), transparent 20%),
    linear-gradient(180deg, #022c22 0%, #052e2b 100%);
}

.app-frame,
.workspace-wrap {
  position: relative;
}

.brand-logo {
  background: var(--brand-gradient);
  box-shadow: 0 18px 35px rgba(var(--accent-rgb), 0.28);
}

.app-btn--primary {
  background: var(--brand-gradient);
  box-shadow: 0 14px 28px rgba(var(--accent-rgb), 0.26);
}

.toolbar-btn--accent {
  color: var(--accent-strong);
  background: rgba(var(--accent-rgb), 0.08);
  border-color: rgba(var(--accent-rgb), 0.24);
}

.toolbar-btn.is-active,
.app-btn.is-active {
  border-color: rgba(var(--accent-rgb), 0.5);
  box-shadow: 0 0 0 4px rgba(var(--accent-rgb), 0.12);
}

.app-btn:focus-visible,
.toolbar-btn:focus-visible,
.editor-textarea:focus-visible,
.toolbar-select:focus-visible,
.findbar-input:focus-visible,
.composer-input:focus-visible,
.composer-select:focus-visible,
.composer-textarea:focus-visible,
.composer-file-input:focus-visible,
.command-palette__input:focus-visible,
.utility-tab:focus-visible,
.outline-item:focus-visible,
.recent-card:focus-visible {
  outline: none;
  border-color: rgba(var(--accent-rgb), 0.48);
  box-shadow: 0 0 0 4px rgba(var(--accent-rgb), 0.14);
}

.editor-textarea::selection,
.markdown-body ::selection {
  background: rgba(var(--accent-rgb), 0.24);
}

.drag-divider:hover::before,
.drag-divider.is-dragging::before {
  background: rgba(var(--accent-rgb), 0.76);
}

.drop-overlay {
  border-color: rgba(var(--accent-rgb), 0.54);
  background: rgba(var(--accent-rgb), 0.12);
}

.drop-overlay__content {
  border-color: rgba(var(--accent-rgb), 0.2);
}

.chip--accent {
  border-color: rgba(var(--accent-rgb), 0.26);
  background: rgba(var(--accent-rgb), 0.1);
  color: var(--accent-strong);
}

.pane,
.app-topbar,
.toolbar-strip,
.app-statusbar,
.preview-sheet,
.status-chip,
.stat-block,
.drag-divider::before,
.preview-sync-meter__fill {
  transition:
    background 180ms ease,
    border-color 180ms ease,
    box-shadow 200ms ease,
    opacity 180ms ease,
    transform 200ms ease,
    width 180ms ease;
}

.app-shell.is-focus-mode .pane.is-dimmed-pane {
  opacity: 0.6;
  transform: scale(0.996);
  filter: saturate(0.88);
}

.app-shell.is-focus-mode .pane.is-active-pane {
  opacity: 1;
  transform: translateY(-1px);
  border-color: rgba(var(--accent-rgb), 0.28);
  box-shadow: 0 24px 52px rgba(15, 23, 42, 0.16), 0 0 0 1px rgba(var(--accent-rgb), 0.16);
}

.dark.app-shell.is-focus-mode .pane.is-active-pane,
.dark .app-shell.is-focus-mode .pane.is-active-pane {
  box-shadow: 0 24px 52px rgba(0, 0, 0, 0.32), 0 0 0 1px rgba(var(--accent-rgb), 0.2);
}

.app-shell.is-focus-mode .app-topbar,
.app-shell.is-focus-mode .toolbar-strip,
.app-shell.is-focus-mode .app-statusbar {
  backdrop-filter: blur(18px);
}

.preview-sync-meter {
  position: relative;
  width: 84px;
  height: 8px;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.18);
  overflow: hidden;
}

.preview-sync-meter__fill {
  position: absolute;
  inset: 0 auto 0 0;
  width: 0;
  border-radius: inherit;
  background: var(--brand-gradient);
  box-shadow: 0 0 0 1px rgba(var(--accent-rgb), 0.12) inset;
}

.command-backdrop {
  z-index: 72;
  align-items: flex-start;
  padding-top: clamp(64px, 10vh, 96px);
}

.command-palette {
  width: min(820px, 100%);
  border: 1px solid var(--border-soft);
  border-radius: 28px;
  background: var(--frame-bg);
  box-shadow: var(--shadow-app);
  overflow: hidden;
  backdrop-filter: blur(22px);
  animation: patch3-slide-up 180ms ease;
}

.command-palette__header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 18px;
  border-bottom: 1px solid var(--border-soft);
  background: linear-gradient(180deg, var(--frame-header) 0%, transparent 100%);
}

.command-palette__input {
  width: 100%;
  height: 48px;
  padding: 0 1rem;
  border: 1px solid var(--border-soft);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.76);
  color: var(--text-strong);
  font-size: 1rem;
  font-weight: 600;
}

.dark .command-palette__input {
  background: rgba(15, 23, 42, 0.78);
}

.command-palette__meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 12px 18px 0;
}

.command-palette__body {
  max-height: min(58vh, 560px);
  overflow: auto;
  padding: 16px 18px 18px;
}

.command-item {
  width: 100%;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 16px;
  border: 1px solid var(--border-soft);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.56);
  color: inherit;
  text-align: left;
}

.dark .command-item {
  background: rgba(15, 23, 42, 0.56);
}

.command-item + .command-item {
  margin-top: 10px;
}

.command-item:hover,
.command-item.is-selected {
  transform: translateY(-1px);
  border-color: rgba(var(--accent-rgb), 0.28);
  background: rgba(var(--accent-rgb), 0.08);
  box-shadow: 0 12px 24px rgba(15, 23, 42, 0.06);
}

.command-item__copy {
  min-width: 0;
  display: grid;
  gap: 4px;
}

.command-item__group {
  color: var(--accent-strong);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.command-item__title {
  color: var(--text-strong);
  font-size: 0.98rem;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.command-item__subtitle {
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.5;
}

.command-item__shortcut {
  align-self: center;
  padding: 0.42rem 0.62rem;
  border-radius: 10px;
  border: 1px solid var(--border-soft);
  background: rgba(15, 23, 42, 0.05);
  color: var(--text-base);
  font-size: 0.8rem;
  font-weight: 800;
  white-space: nowrap;
}

.dark .command-item__shortcut {
  background: rgba(255, 255, 255, 0.06);
}

.command-empty {
  padding: 36px 18px;
  text-align: center;
  border: 1px dashed var(--border-soft);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.4);
}

.dark .command-empty {
  background: rgba(15, 23, 42, 0.44);
}

.command-empty__title {
  margin: 0;
  color: var(--text-strong);
  font-size: 1rem;
  font-weight: 800;
}

.command-empty__subtitle {
  margin: 8px auto 0;
  max-width: 420px;
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.6;
}

.utility-sidebar-layer {
  position: absolute;
  inset: 0;
  z-index: 26;
  pointer-events: none;
}

.utility-sidebar-backdrop {
  position: absolute;
  inset: 0;
  pointer-events: auto;
  background: rgba(15, 23, 42, 0.18);
  backdrop-filter: blur(2px);
}

.utility-sidebar {
  position: absolute;
  top: 12px;
  right: 12px;
  bottom: 12px;
  width: min(400px, calc(100% - 24px));
  pointer-events: auto;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border-soft);
  border-radius: 24px;
  background: var(--frame-bg);
  box-shadow: var(--shadow-app);
  overflow: hidden;
  backdrop-filter: blur(20px);
  animation: patch3-slide-in-right 180ms ease;
}

.utility-sidebar__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 18px 12px;
  border-bottom: 1px solid var(--border-soft);
  background: linear-gradient(180deg, var(--frame-header) 0%, transparent 100%);
}

.utility-sidebar__title {
  margin: 0;
  font-size: 1rem;
  font-weight: 800;
  color: var(--text-strong);
}

.utility-sidebar__subtitle {
  margin: 6px 0 0;
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.55;
}

.utility-sidebar__tabs {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 18px 0;
  flex-wrap: wrap;
}

.utility-tab {
  appearance: none;
  border: 1px solid var(--border-soft);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.62);
  color: var(--text-base);
  font-size: 0.82rem;
  font-weight: 800;
  line-height: 1;
  padding: 0.68rem 0.9rem;
}

.dark .utility-tab {
  background: rgba(15, 23, 42, 0.64);
}

.utility-tab.is-active {
  color: var(--accent-strong);
  border-color: rgba(var(--accent-rgb), 0.24);
  background: rgba(var(--accent-rgb), 0.1);
}

.utility-sidebar__body {
  flex: 1;
  min-height: 0;
  overflow: auto;
  padding: 16px 18px 18px;
}

.outline-list {
  display: grid;
  gap: 10px;
}

.outline-item {
  width: 100%;
  display: grid;
  gap: 4px;
  padding: 12px 14px;
  border: 1px solid var(--border-soft);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.58);
  color: inherit;
  text-align: left;
}

.dark .outline-item {
  background: rgba(15, 23, 42, 0.58);
}

.outline-item:hover,
.outline-item.is-active {
  border-color: rgba(var(--accent-rgb), 0.28);
  background: rgba(var(--accent-rgb), 0.08);
}

.outline-item__line {
  color: var(--accent-strong);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.outline-item__text {
  color: var(--text-strong);
  font-size: 0.92rem;
  font-weight: 700;
  line-height: 1.45;
}

.sidebar-stats {
  display: grid;
  gap: 16px;
}

.sidebar-stats-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.sidebar-stat-card,
.task-progress-card,
.recent-card {
  border: 1px solid var(--border-soft);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.58);
  box-shadow: 0 12px 24px rgba(15, 23, 42, 0.05);
}

.dark .sidebar-stat-card,
.dark .task-progress-card,
.dark .recent-card {
  background: rgba(15, 23, 42, 0.58);
}

.sidebar-stat-card {
  padding: 14px;
}

.sidebar-stat-card__label {
  display: block;
  color: var(--text-muted);
  font-size: 0.78rem;
  font-weight: 700;
}

.sidebar-stat-card__value {
  display: block;
  margin-top: 8px;
  color: var(--text-strong);
  font-size: 1.08rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.task-progress-card {
  padding: 16px;
}

.task-progress-card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.task-progress-card__label {
  color: var(--text-base);
  font-weight: 800;
}

.task-progress-card__value {
  color: var(--accent-strong);
  font-weight: 800;
}

.task-progress-card__bar {
  margin-top: 12px;
  height: 10px;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.16);
  overflow: hidden;
}

.task-progress-card__fill {
  height: 100%;
  border-radius: inherit;
  background: var(--brand-gradient);
}

.task-progress-card__hint {
  margin: 10px 0 0;
  color: var(--text-muted);
  font-size: 0.86rem;
  line-height: 1.5;
}

.recent-list {
  display: grid;
  gap: 12px;
}

.recent-list__actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.recent-card {
  width: 100%;
  padding: 14px;
  color: inherit;
  text-align: left;
}

.recent-card__top,
.recent-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}

.recent-card__copy {
  min-width: 0;
}

.recent-card__title {
  display: block;
  color: var(--text-strong);
  font-size: 0.96rem;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.recent-card__time {
  display: block;
  margin-top: 4px;
  color: var(--text-muted);
  font-size: 0.78rem;
  font-weight: 700;
}

.recent-card__snippet {
  margin: 12px 0;
  color: var(--text-base);
  font-size: 0.88rem;
  line-height: 1.6;
}

.sidebar-empty {
  padding: 36px 18px;
  border: 1px dashed var(--border-soft);
  border-radius: 20px;
  text-align: center;
  background: rgba(255, 255, 255, 0.42);
}

.dark .sidebar-empty {
  background: rgba(15, 23, 42, 0.46);
}

.sidebar-empty__title {
  margin: 0;
  color: var(--text-strong);
  font-size: 1rem;
  font-weight: 800;
}

.sidebar-empty__subtitle {
  margin: 8px auto 0;
  max-width: 420px;
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

@keyframes patch3-slide-up {
  from {
    opacity: 0;
    transform: translateY(10px) scale(0.992);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes patch3-slide-in-right {
  from {
    opacity: 0;
    transform: translateX(16px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@media (max-width: 1180px) {
  .utility-sidebar {
    width: min(380px, calc(100% - 24px));
  }
}

@media (max-width: 1024px) {
  .command-backdrop {
    padding-top: 48px;
  }

  .command-palette {
    width: min(760px, 100%);
  }

  .sidebar-stats-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 860px) {
  .utility-sidebar {
    top: 8px;
    right: 8px;
    bottom: 8px;
    width: calc(100% - 16px);
  }

  .sidebar-stats-grid {
    grid-template-columns: 1fr;
  }

  .command-palette__header {
    flex-wrap: wrap;
  }

  .command-item {
    flex-direction: column;
    align-items: stretch;
  }

  .command-item__shortcut {
    align-self: flex-start;
  }
}

.patch4-ribbon {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 20px 14px;
  border-top: 1px solid var(--border-soft);
  border-bottom: 1px solid var(--border-soft);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.66), rgba(248, 250, 252, 0.6));
}

.dark .patch4-ribbon {
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.76), rgba(15, 23, 42, 0.62));
}

.patch4-ribbon__copy {
  min-width: 0;
}

.patch4-ribbon__eyebrow {
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.patch4-ribbon__subtitle {
  font-size: 13px;
  color: var(--text-base);
  margin-top: 4px;
}

.patch4-ribbon__actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.modal-card--patch4 {
  width: min(1100px, calc(100vw - 40px));
}

.modal-card--versions,
.modal-card--diff {
  width: min(1180px, calc(100vw - 32px));
}

.modal-card__body--patch4 {
  max-height: min(76vh, 760px);
}

.patch4-modal-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.patch4-inline-actions {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.patch4-toggle-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.patch4-toggle {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid var(--border-soft);
  background: rgba(255, 255, 255, 0.72);
  color: var(--text-base);
}

.dark .patch4-toggle {
  background: rgba(15, 23, 42, 0.78);
}

.patch4-toggle input {
  margin: 0;
}

.template-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.template-card,
.snapshot-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 16px;
  border-radius: 20px;
  border: 1px solid var(--border-soft);
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 16px 36px rgba(15, 23, 42, 0.08);
}

.dark .template-card,
.dark .snapshot-card {
  background: rgba(15, 23, 42, 0.8);
  box-shadow: 0 18px 38px rgba(0, 0, 0, 0.24);
}

.template-card__title,
.snapshot-card__title {
  margin: 0;
  font-size: 16px;
  color: var(--text-strong);
}

.template-card__description,
.snapshot-card__meta {
  margin: 0;
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
}

.template-card__preview,
.snapshot-card__preview {
  margin: 0;
  min-height: 140px;
  max-height: 220px;
  padding: 12px 14px;
  border-radius: 16px;
  border: 1px solid var(--border-soft);
  background: rgba(248, 250, 252, 0.78);
  color: var(--text-base);
  font-size: 12px;
  line-height: 1.55;
  white-space: pre-wrap;
  word-break: break-word;
}

.dark .template-card__preview,
.dark .snapshot-card__preview {
  background: rgba(2, 6, 23, 0.72);
}

.template-card__actions,
.snapshot-card__actions,
.snapshot-card__top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.snapshot-card__copy {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.patch4-empty {
  padding: 28px 10px 8px;
  text-align: center;
}

.patch4-empty__title {
  margin: 0;
  font-size: 17px;
  color: var(--text-strong);
}

.patch4-empty__subtitle {
  margin: 8px 0 0;
  font-size: 13px;
  color: var(--text-muted);
}

.frontmatter-bar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  padding: 18px 20px;
  margin-bottom: 18px;
  border-radius: 18px;
  border: 1px solid var(--border-soft);
  background: linear-gradient(180deg, rgba(248, 250, 252, 0.92), rgba(255, 255, 255, 0.88));
}

.dark .frontmatter-bar {
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.88), rgba(2, 6, 23, 0.72));
}

.frontmatter-bar__copy {
  min-width: 0;
}

.frontmatter-bar__eyebrow {
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.frontmatter-bar__title {
  margin-top: 6px;
  font-size: 20px;
  font-weight: 700;
  color: var(--text-strong);
}

.frontmatter-bar__chips {
  display: flex;
  align-items: flex-start;
  justify-content: flex-end;
  gap: 8px;
  flex-wrap: wrap;
}

.frontmatter-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--border-soft);
  background: rgba(255, 255, 255, 0.86);
}

.dark .frontmatter-chip {
  background: rgba(15, 23, 42, 0.86);
}

.frontmatter-chip__key {
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.frontmatter-chip__value {
  font-size: 13px;
  color: var(--text-strong);
}

.preview-sheet__content > :first-child {
  margin-top: 0;
}

.preview-theme--paper {
  background: #ffffff;
}

.preview-theme--paper .frontmatter-bar {
  background: #f8fafc;
}

.preview-theme--midnight {
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.98), rgba(2, 6, 23, 0.98));
  color: #cbd5e1;
}

.preview-theme--midnight,
.preview-theme--midnight .markdown-body,
.preview-theme--midnight .preview-sheet__content {
  color: #cbd5e1;
}

.preview-theme--midnight h1,
.preview-theme--midnight h2,
.preview-theme--midnight h3,
.preview-theme--midnight h4,
.preview-theme--midnight h5,
.preview-theme--midnight h6 {
  color: #f8fafc;
}

.preview-theme--midnight code:not(pre code) {
  background: rgba(148, 163, 184, 0.12);
}

.preview-theme--terminal {
  background: linear-gradient(180deg, rgba(3, 19, 26, 0.98), rgba(6, 24, 32, 0.98));
  color: #d1fae5;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

.preview-theme--terminal,
.preview-theme--terminal .preview-sheet__content {
  color: #d1fae5;
}

.preview-theme--terminal h1,
.preview-theme--terminal h2,
.preview-theme--terminal h3,
.preview-theme--terminal h4,
.preview-theme--terminal h5,
.preview-theme--terminal h6 {
  color: #f8fafc;
}

.preview-theme--terminal a {
  color: #67e8f9;
}

.preview-theme--terminal .frontmatter-bar {
  background: rgba(7, 27, 35, 0.96);
}

.preview-sheet.is-print-layout {
  max-width: 860px;
  margin: 0 auto;
  box-shadow: 0 24px 60px rgba(15, 23, 42, 0.16);
}

.diff-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
}

.diff-grid--head {
  position: sticky;
  top: 0;
  z-index: 2;
  background: var(--pane-bg);
}

.diff-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--border-soft);
}

.diff-cell {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 0;
  min-height: 38px;
  border-right: 1px solid var(--border-soft);
}

.diff-cell:last-child {
  border-right: 0;
}

.diff-cell--head {
  padding: 10px 14px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.diff-cell__line {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px 6px;
  border-right: 1px solid var(--border-soft);
  color: var(--text-muted);
  font-size: 11px;
}

.diff-cell__code {
  display: block;
  padding: 8px 12px;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 12px;
  line-height: 1.55;
  color: var(--text-base);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

.diff-row.is-added .diff-cell:last-child {
  background: rgba(16, 185, 129, 0.1);
}

.diff-row.is-removed .diff-cell:first-child {
  background: rgba(245, 158, 11, 0.12);
}

.diff-row.is-changed .diff-cell {
  background: rgba(59, 130, 246, 0.08);
}

.math-inline,
.math-block {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 6px;
  border-radius: 10px;
  background: rgba(14, 165, 233, 0.1);
  border: 1px solid rgba(14, 165, 233, 0.12);
  font-family: 'Times New Roman', Georgia, serif;
}

.math-block {
  display: flex;
  justify-content: center;
  margin: 16px 0;
  padding: 12px 14px;
}

.math-frac {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  line-height: 1.1;
  vertical-align: middle;
}

.math-frac__top,
.math-frac__bottom {
  display: block;
  padding: 0 4px;
}

.math-frac__bar {
  width: 100%;
  height: 1px;
  background: currentColor;
  margin: 2px 0;
}

.math-root {
  display: inline-flex;
  align-items: flex-end;
  gap: 3px;
}

.math-root__symbol {
  font-size: 18px;
  line-height: 1;
}

.math-root__body {
  display: inline-flex;
  align-items: center;
  padding-left: 3px;
  border-top: 1px solid currentColor;
}

.mermaid-lite {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 16px;
  margin: 18px 0;
  border-radius: 20px;
  border: 1px solid var(--border-soft);
  background: rgba(248, 250, 252, 0.82);
}

.dark .mermaid-lite {
  background: rgba(2, 6, 23, 0.72);
}

.mermaid-lite__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.mermaid-lite__badge {
  display: inline-flex;
  align-items: center;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(14, 165, 233, 0.12);
  color: var(--accent-strong);
  font-size: 12px;
  font-weight: 600;
}

.mermaid-lite__hint,
.mermaid-lite__empty {
  font-size: 12px;
  color: var(--text-muted);
}

.mermaid-lite__svg {
  width: 100%;
  height: auto;
  color: var(--accent-strong);
}

.mermaid-lite__node {
  fill: rgba(14, 165, 233, 0.1);
  stroke: currentColor;
  stroke-width: 1.4;
}

.mermaid-lite__node--round,
.mermaid-lite__node--diamond {
  fill: rgba(14, 165, 233, 0.12);
}

.mermaid-lite__edge {
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
}

.mermaid-lite__label-text,
.mermaid-lite__edge-label {
  font-size: 10px;
  fill: currentColor;
  font-family: Inter, ui-sans-serif, system-ui, sans-serif;
}

@media (max-width: 960px) {
  .patch4-ribbon,
  .frontmatter-bar {
    flex-direction: column;
    align-items: stretch;
  }

  .template-grid,
  .patch4-toggle-list,
  .diff-row {
    grid-template-columns: 1fr;
  }

  .diff-cell {
    border-right: 0;
    border-bottom: 1px solid var(--border-soft);
  }

  .diff-cell:last-child {
    border-bottom: 0;
  }
}

/* Patch 5 final polish */
.app-shell {
  --editor-font-size: 14px;
}

.editor-textarea {
  font-size: var(--editor-font-size, 14px);
}

.toast-stack {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 12px;
  width: min(420px, calc(100vw - 28px));
}

.toast-stack__tools {
  width: 100%;
  display: flex;
  justify-content: flex-end;
}

.toast-stack__clear {
  appearance: none;
  border: 1px solid var(--border-soft);
  background: rgba(255, 255, 255, 0.74);
  color: var(--text-base);
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 0.78rem;
  font-weight: 700;
  transition: background 160ms ease, border-color 160ms ease, color 160ms ease, transform 160ms ease;
}

.dark .toast-stack__clear {
  background: rgba(15, 23, 42, 0.84);
}

.toast-stack__clear:hover,
.toast-stack__clear:focus-visible {
  border-color: var(--accent-soft);
  color: var(--accent-strong);
  transform: translateY(-1px);
}

.app-toast {
  width: 100%;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
  border-radius: 18px;
  border: 1px solid rgba(148, 163, 184, 0.28);
  box-shadow: 0 22px 40px rgba(15, 23, 42, 0.14);
}

.app-toast__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.54);
  font-weight: 900;
  font-size: 0.9rem;
}

.app-toast__body {
  min-width: 0;
  flex: 1;
}

.app-toast__message {
  font-size: 0.92rem;
  font-weight: 700;
  line-height: 1.45;
}

.app-toast__meta {
  margin-top: 4px;
  font-size: 0.78rem;
  line-height: 1.45;
  color: var(--text-muted);
}

.app-toast__close {
  appearance: none;
  border: 0;
  background: transparent;
  color: inherit;
  opacity: 0.78;
  font-size: 1.15rem;
  line-height: 1;
  padding: 2px;
  transition: opacity 160ms ease, transform 160ms ease;
}

.app-toast__close:hover,
.app-toast__close:focus-visible {
  opacity: 1;
  transform: scale(1.06);
}

.app-toast--success {
  background: linear-gradient(180deg, rgba(16, 185, 129, 0.14) 0%, rgba(255, 255, 255, 0.96) 100%);
  border-color: rgba(16, 185, 129, 0.28);
  color: #065f46;
}

.dark .app-toast--success {
  background: linear-gradient(180deg, rgba(16, 185, 129, 0.22) 0%, rgba(15, 23, 42, 0.96) 100%);
  color: #d1fae5;
}

.app-toast--error {
  background: linear-gradient(180deg, rgba(244, 63, 94, 0.16) 0%, rgba(255, 255, 255, 0.96) 100%);
  border-color: rgba(244, 63, 94, 0.28);
  color: #9f1239;
}

.dark .app-toast--error {
  background: linear-gradient(180deg, rgba(244, 63, 94, 0.24) 0%, rgba(15, 23, 42, 0.96) 100%);
  color: #fecdd3;
}

.app-toast--warning {
  background: linear-gradient(180deg, rgba(245, 158, 11, 0.16) 0%, rgba(255, 255, 255, 0.96) 100%);
  border-color: rgba(245, 158, 11, 0.28);
  color: #92400e;
}

.dark .app-toast--warning {
  background: linear-gradient(180deg, rgba(245, 158, 11, 0.24) 0%, rgba(15, 23, 42, 0.96) 100%);
  color: #fde68a;
}

.app-toast--info {
  background: linear-gradient(180deg, rgba(59, 130, 246, 0.14) 0%, rgba(255, 255, 255, 0.96) 100%);
  border-color: rgba(59, 130, 246, 0.24);
  color: #1d4ed8;
}

.dark .app-toast--info {
  background: linear-gradient(180deg, rgba(59, 130, 246, 0.22) 0%, rgba(15, 23, 42, 0.96) 100%);
  color: #dbeafe;
}

.modal-card--settings {
  width: min(1080px, 100%);
  max-height: min(86vh, 980px);
}

.modal-card--welcome {
  width: min(1120px, 100%);
  max-height: min(88vh, 980px);
}

.modal-card--release {
  width: min(920px, 100%);
  max-height: min(84vh, 940px);
}

.modal-card__body--settings,
.modal-card__body--welcome,
.modal-card__body--release {
  padding-top: 10px;
}

.settings-hero {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0 24px 12px;
}

.settings-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.settings-section {
  border: 1px solid var(--border-soft);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.54);
  padding: 18px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.dark .settings-section {
  background: rgba(15, 23, 42, 0.54);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.settings-section--danger {
  border-color: rgba(244, 63, 94, 0.2);
}

.settings-section__title {
  margin: 0 0 14px;
  font-size: 0.98rem;
  letter-spacing: -0.01em;
  color: var(--text-strong);
}

.settings-row + .settings-row {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--border-soft);
}

.settings-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 16px;
  align-items: center;
}

.settings-row__copy {
  min-width: 0;
}

.settings-row__title {
  margin: 0;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-strong);
}

.settings-row__description {
  margin: 4px 0 0;
  font-size: 0.82rem;
  line-height: 1.55;
  color: var(--text-muted);
}

.settings-row__controls {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-end;
}

.settings-toggle {
  appearance: none;
  border: 1px solid var(--border-soft);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--text-base);
  min-width: 104px;
  padding: 8px 12px;
  font-size: 0.82rem;
  font-weight: 800;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease, color 160ms ease;
}

.dark .settings-toggle {
  background: rgba(15, 23, 42, 0.84);
}

.settings-toggle.is-active {
  border-color: var(--accent-soft);
  background: rgba(14, 165, 233, 0.12);
  color: var(--accent-strong);
}

.settings-toggle:hover,
.settings-toggle:focus-visible,
.settings-select:hover,
.settings-select:focus-visible {
  transform: translateY(-1px);
}

.settings-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.settings-select {
  min-width: 146px;
}

.modal-card__footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  padding: 16px 24px 22px;
  border-top: 1px solid var(--border-soft);
}

.welcome-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  background: rgba(14, 165, 233, 0.12);
  color: var(--accent-strong);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.welcome-title {
  margin-top: 12px;
}

.welcome-subtitle {
  max-width: 840px;
}

.welcome-hero {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 18px;
}

.welcome-panel {
  border: 1px solid var(--border-soft);
  border-radius: 24px;
  padding: 20px;
  background: rgba(255, 255, 255, 0.58);
}

.dark .welcome-panel {
  background: rgba(15, 23, 42, 0.56);
}

.welcome-panel--primary {
  background: linear-gradient(180deg, rgba(14, 165, 233, 0.08) 0%, rgba(255, 255, 255, 0.58) 100%);
}

.dark .welcome-panel--primary {
  background: linear-gradient(180deg, rgba(14, 165, 233, 0.12) 0%, rgba(15, 23, 42, 0.6) 100%);
}

.welcome-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}

.welcome-section-title {
  margin: 0 0 12px;
  font-size: 1rem;
  color: var(--text-strong);
}

.welcome-steps {
  margin: 0;
  padding-left: 1.2rem;
  color: var(--text-base);
  line-height: 1.7;
}

.welcome-steps li + li {
  margin-top: 0.45rem;
}

.welcome-shortcuts {
  display: grid;
  gap: 10px;
}

.welcome-shortcut {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  border: 1px solid var(--border-soft);
  border-radius: 16px;
  padding: 10px 12px;
  background: rgba(255, 255, 255, 0.44);
}

.dark .welcome-shortcut {
  background: rgba(15, 23, 42, 0.54);
}

.welcome-shortcut__label {
  font-size: 0.86rem;
  line-height: 1.45;
  color: var(--text-base);
}

.welcome-note {
  margin-top: 12px;
  font-size: 0.82rem;
  line-height: 1.55;
  color: var(--text-muted);
}

.welcome-feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 18px;
}

.welcome-feature-card {
  border: 1px solid var(--border-soft);
  border-radius: 20px;
  padding: 18px;
  background: rgba(255, 255, 255, 0.48);
}

.dark .welcome-feature-card {
  background: rgba(15, 23, 42, 0.52);
}

.welcome-feature-card__title {
  margin: 0 0 8px;
  font-size: 0.96rem;
  color: var(--text-strong);
}

.welcome-feature-card__copy {
  margin: 0;
  font-size: 0.84rem;
  line-height: 1.6;
  color: var(--text-muted);
}

.modal-card__footer--welcome {
  align-items: center;
}

.release-section + .release-section {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--border-soft);
}

.release-section__title {
  margin: 0 0 10px;
  font-size: 0.98rem;
  color: var(--text-strong);
}

.release-section__list {
  margin: 0;
  padding-left: 1.2rem;
  color: var(--text-base);
}

.release-section__item + .release-section__item {
  margin-top: 0.45rem;
}

.app-shell.is-reduced-motion *,
.app-shell.is-reduced-motion *::before,
.app-shell.is-reduced-motion *::after {
  animation: none !important;
  transition-duration: 0ms !important;
  scroll-behavior: auto !important;
}

@media (max-width: 1120px) {
  .settings-grid,
  .welcome-feature-grid,
  .welcome-hero {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 900px) {
  .modal-card--settings,
  .modal-card--welcome,
  .modal-card--release {
    max-height: min(90vh, 980px);
  }

  .settings-row {
    grid-template-columns: 1fr;
  }

  .settings-row__controls {
    justify-content: flex-start;
  }

  .modal-card__footer,
  .modal-card__footer--welcome {
    flex-direction: column;
    align-items: stretch;
  }

  .toast-stack {
    align-items: stretch;
  }
}

@media (max-width: 640px) {
  .settings-hero,
  .welcome-chip-row,
  .settings-actions {
    justify-content: flex-start;
  }

  .welcome-shortcut {
    flex-direction: column;
    align-items: flex-start;
  }

  .modal-card__header--welcome {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ===== Patch 6: UX redesign, grouped menus, compact status surfaces ===== */
.app-topbar--patch6 {
  align-items: center;
  gap: 14px;
  padding: 12px 14px;
}

.topbar-left {
  display: flex;
  align-items: center;
  min-width: 0;
  flex: 1 1 360px;
}

.topbar-doc-wrap {
  position: relative;
  width: 100%;
  max-width: 560px;
  min-width: 0;
}

.topbar-doc-anchor {
  appearance: none;
  width: 100%;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border: 1px solid var(--border-soft);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.82);
  color: inherit;
  text-align: left;
  box-shadow: 0 10px 26px rgba(15, 23, 42, 0.06);
  transition: border-color 180ms ease, box-shadow 180ms ease, transform 180ms ease, background 180ms ease;
}

.dark .topbar-doc-anchor {
  background: rgba(15, 23, 42, 0.82);
}

.topbar-doc-anchor:hover,
.topbar-doc-anchor.is-active {
  border-color: rgba(var(--accent-rgb), 0.34);
  box-shadow: 0 12px 28px rgba(15, 23, 42, 0.08), 0 0 0 4px rgba(var(--accent-rgb), 0.1);
}

.brand-logo--mini {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  font-size: 1rem;
  box-shadow: 0 12px 26px rgba(var(--accent-rgb), 0.24);
}

.save-indicator {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.38);
  box-shadow: 0 0 0 4px rgba(148, 163, 184, 0.12);
  flex-shrink: 0;
}

.save-indicator.is-dirty {
  background: #f59e0b;
  box-shadow: 0 0 0 4px rgba(245, 158, 11, 0.15);
}

.save-indicator.is-clean {
  background: #10b981;
  box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.15);
}

.topbar-doc-copy {
  display: grid;
  gap: 4px;
  min-width: 0;
  flex: 1;
}

.topbar-doc-title-row {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.topbar-doc-title {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 0.96rem;
  font-weight: 800;
  color: var(--text-strong);
}

.topbar-doc-state {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.18rem 0.46rem;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.14);
  color: var(--text-muted);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  flex-shrink: 0;
}

.topbar-doc-subtitle {
  color: var(--text-muted);
  font-size: 0.78rem;
  line-height: 1.3;
}

.topbar-doc-chevron {
  color: var(--text-muted);
  font-size: 0.78rem;
  flex-shrink: 0;
}

.topbar-doc-popover {
  position: absolute;
  top: calc(100% + 10px);
  left: 0;
  z-index: 48;
  width: min(460px, calc(100vw - 40px));
  border: 1px solid var(--border-soft);
  border-radius: 24px;
  background: var(--frame-bg);
  box-shadow: var(--shadow-app);
  backdrop-filter: blur(22px);
  overflow: hidden;
}

.topbar-doc-popover__hero {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 14px 14px 0;
}

.topbar-doc-popover__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  padding: 14px;
}

.topbar-doc-popover__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0 14px 14px;
}

.patch6-info-field {
  display: grid;
  gap: 4px;
  padding: 11px 12px;
  border: 1px solid var(--border-soft);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.58);
}

.dark .patch6-info-field {
  background: rgba(15, 23, 42, 0.58);
}

.patch6-info-field__label {
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.patch6-info-field__value {
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--text-strong);
}

.topbar-center {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 0 1 auto;
}

.view-segment {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px;
  border: 1px solid var(--border-soft);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.74);
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.05);
}

.dark .view-segment {
  background: rgba(15, 23, 42, 0.74);
}

.view-segment__btn {
  appearance: none;
  border: 1px solid transparent;
  border-radius: 999px;
  background: transparent;
  color: var(--text-muted);
  font-size: 0.8rem;
  font-weight: 800;
  line-height: 1;
  padding: 0.66rem 0.9rem;
  transition: background 160ms ease, color 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.view-segment__btn:hover {
  color: var(--text-base);
}

.view-segment__btn.is-active {
  color: var(--accent-strong);
  border-color: rgba(var(--accent-rgb), 0.28);
  background: rgba(var(--accent-rgb), 0.1);
  box-shadow: 0 0 0 3px rgba(var(--accent-rgb), 0.12);
}

.topbar-actions--compact {
  gap: 8px;
}

.topbar-actions--compact .app-btn {
  box-shadow: none;
  padding: 0.58rem 0.84rem;
}

.topbar-actions--compact .app-btn--primary {
  box-shadow: 0 10px 22px rgba(var(--accent-rgb), 0.22);
}

.toolbar-shell {
  border-bottom: 1px solid var(--border-soft);
  background: linear-gradient(180deg, rgba(248, 250, 252, 0.4) 0%, rgba(248, 250, 252, 0.08) 100%);
}

.dark .toolbar-shell {
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.4) 0%, rgba(15, 23, 42, 0.08) 100%);
}

.toolbar-menubar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 14px;
  overflow-x: auto;
}

.toolbar-menubar__left,
.toolbar-menubar__right {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.toolbar-menubar__right {
  justify-content: flex-end;
  flex-wrap: wrap;
}

.toolbar-menubar__hint {
  margin-right: 2px;
  color: var(--text-muted);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.toolbar-menu-pill {
  appearance: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--border-soft);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.82);
  color: var(--text-base);
  font-size: 0.8rem;
  font-weight: 800;
  line-height: 1;
  padding: 0.62rem 0.86rem;
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.05);
  transition: border-color 160ms ease, background 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}

.dark .toolbar-menu-pill {
  background: rgba(15, 23, 42, 0.82);
}

.toolbar-menu-pill:hover {
  transform: translateY(-1px);
  border-color: rgba(var(--accent-rgb), 0.26);
}

.toolbar-menu-pill.is-active {
  color: var(--accent-strong);
  border-color: rgba(var(--accent-rgb), 0.34);
  background: rgba(var(--accent-rgb), 0.1);
  box-shadow: 0 0 0 4px rgba(var(--accent-rgb), 0.1);
}

.toolbar-menu-pill__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  color: var(--accent-strong);
}

.toolbar-menu-pill__caret {
  color: var(--text-muted);
  font-size: 0.72rem;
}

.toolbar-panel {
  border-top: 1px solid var(--border-soft);
  padding-bottom: 14px;
}

.toolbar-panel__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px 10px;
}

.toolbar-panel__title {
  margin: 0;
  color: var(--text-strong);
  font-size: 0.98rem;
  font-weight: 800;
}

.toolbar-panel__subtitle {
  margin: 4px 0 0;
  color: var(--text-muted);
  font-size: 0.84rem;
  line-height: 1.5;
}

.toolbar-panel__meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.toolbar-panel__content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 14px;
  padding: 0 14px;
  max-height: 340px;
  overflow: auto;
}

.patch6-panel-section {
  display: grid;
  gap: 10px;
  padding: 12px;
  border: 1px solid var(--border-soft);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.54);
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.04);
}

.dark .patch6-panel-section {
  background: rgba(15, 23, 42, 0.54);
}

.patch6-panel-section__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.patch6-panel-section__title {
  margin: 0;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.patch6-panel-section__tip {
  color: var(--text-muted);
  font-size: 0.74rem;
  font-weight: 700;
}

.patch6-panel-actions {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 10px;
}

.panel-action {
  appearance: none;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border-soft);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.82);
  color: inherit;
  text-align: left;
  transition: border-color 160ms ease, background 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}

.dark .panel-action {
  background: rgba(15, 23, 42, 0.82);
}

.panel-action:hover {
  transform: translateY(-1px);
  border-color: rgba(var(--accent-rgb), 0.28);
  box-shadow: 0 12px 26px rgba(15, 23, 42, 0.06);
}

.panel-action.is-active {
  border-color: rgba(var(--accent-rgb), 0.34);
  background: rgba(var(--accent-rgb), 0.1);
  box-shadow: 0 0 0 4px rgba(var(--accent-rgb), 0.1);
}

.panel-action__main {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  min-width: 0;
}

.panel-action__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 10px;
  background: rgba(var(--accent-rgb), 0.1);
  color: var(--accent-strong);
  font-size: 0.76rem;
  font-weight: 800;
  flex-shrink: 0;
}

.panel-action__copy {
  display: grid;
  gap: 3px;
  min-width: 0;
}

.panel-action__label {
  color: var(--text-strong);
  font-size: 0.86rem;
  font-weight: 800;
}

.panel-action__description {
  color: var(--text-muted);
  font-size: 0.78rem;
  line-height: 1.45;
}

.panel-action__meta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.22rem 0.52rem;
  border-radius: 999px;
  background: rgba(var(--accent-rgb), 0.08);
  color: var(--accent-strong);
  font-size: 0.72rem;
  font-weight: 800;
  line-height: 1;
  flex-shrink: 0;
}

.patch6-select-field {
  display: grid;
  gap: 6px;
  padding: 11px 12px;
  border: 1px solid var(--border-soft);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.72);
}

.dark .patch6-select-field {
  background: rgba(15, 23, 42, 0.72);
}

.patch6-select-field__label {
  color: var(--text-muted);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.patch6-select-field__control {
  width: 100%;
}

.app-shell .workspace-wrap {
  padding: 10px;
}

.pane-header--compact {
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
}

.pane-header__main {
  display: grid;
  gap: 2px;
}

.pane-header__eyebrow {
  color: var(--text-muted);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.pane-header--compact .pane-title {
  font-size: 0.98rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  text-transform: none;
}

.pane-header--compact .pane-header-actions {
  gap: 8px;
}

.pane-header--compact .pane-header-actions .toolbar-btn {
  padding: 0.44rem 0.66rem;
  font-size: 0.74rem;
}

.pane-header--compact .pane-header-actions .status-chip {
  font-size: 0.72rem;
}

.editor-gutter {
  width: 52px;
  padding: 12px 9px;
}

.drag-divider.is-hovered::before,
.drag-divider.is-dragging::before {
  transform: scaleY(1.06);
}

.divider-tooltip {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 190px;
  display: grid;
  gap: 4px;
  padding: 10px 12px;
  border: 1px solid rgba(var(--accent-rgb), 0.24);
  border-radius: 16px;
  background: var(--frame-bg);
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.14);
  backdrop-filter: blur(20px);
  pointer-events: none;
  z-index: 12;
}

.divider-tooltip__title {
  color: var(--text-strong);
  font-size: 0.8rem;
  font-weight: 800;
}

.divider-tooltip__copy {
  color: var(--text-muted);
  font-size: 0.72rem;
  line-height: 1.45;
}

.app-statusbar--patch6 {
  gap: 14px;
  padding: 10px 14px;
}

.status-cluster--metrics,
.status-cluster--signals {
  gap: 8px;
  flex-wrap: wrap;
}

.status-cluster--signals {
  justify-content: flex-end;
}

.status-metric {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 0.26rem 0.5rem;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.08);
}

.status-metric__label {
  color: var(--text-muted);
  font-size: 0.72rem;
  font-weight: 700;
}

.status-metric__value {
  color: var(--text-strong);
  font-size: 0.8rem;
  font-weight: 800;
}

.app-statusbar--patch6 .status-chip {
  font-size: 0.72rem;
}

@media (max-width: 1320px) {
  .app-topbar--patch6 {
    flex-wrap: wrap;
  }

  .topbar-left {
    order: 1;
    flex: 1 1 100%;
  }

  .topbar-actions--compact {
    order: 2;
    margin-left: auto;
  }

  .topbar-center {
    order: 3;
    width: 100%;
    justify-content: flex-start;
  }
}

@media (max-width: 1080px) {
  .toolbar-panel__content {
    grid-template-columns: 1fr;
    max-height: 360px;
  }

  .patch6-panel-actions {
    grid-template-columns: 1fr;
  }

  .topbar-doc-popover {
    width: min(100%, calc(100vw - 36px));
  }
}

@media (max-width: 960px) {
  .topbar-actions--compact {
    width: 100%;
    justify-content: flex-start;
  }

  .view-segment {
    width: 100%;
    justify-content: space-between;
  }

  .view-segment__btn {
    flex: 1;
  }

  .toolbar-menubar {
    display: block;
  }

  .toolbar-menubar__left,
  .toolbar-menubar__right {
    flex-wrap: wrap;
  }

  .toolbar-menubar__right {
    margin-top: 8px;
    justify-content: flex-start;
  }

  .topbar-doc-popover__grid {
    grid-template-columns: 1fr;
  }

  .status-cluster--signals {
    justify-content: flex-start;
  }
}

@media (max-width: 720px) {
  .divider-tooltip {
    display: none;
  }

  .brand-logo--mini {
    width: 38px;
    height: 38px;
    border-radius: 12px;
  }

  .topbar-doc-anchor {
    padding: 9px 10px;
  }

  .pane-header--compact {
    align-items: flex-start;
  }

  .editor-gutter {
    width: 46px;
    padding: 12px 7px;
  }
}

/* ===== Patch 7: smart writing, contextual editor tools, and media input ===== */
.editor-focus-band {
  position: absolute;
  left: 10px;
  right: 12px;
  top: 0;
  height: 28px;
  z-index: 0;
  pointer-events: none;
  opacity: 0;
  border-radius: 18px;
  background: rgba(14, 165, 233, 0.08);
  border: 1px solid rgba(14, 165, 233, 0.12);
  transition: transform 160ms ease, height 160ms ease, opacity 160ms ease;
}

.dark .editor-focus-band {
  background: rgba(56, 189, 248, 0.08);
  border-color: rgba(125, 211, 252, 0.16);
}

.editor-focus-band.is-active {
  opacity: 1;
}

.editor-focus-mask {
  --focus-top: 0px;
  --focus-bottom: 0px;
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  opacity: 0;
  transition: opacity 160ms ease;
  background:
    linear-gradient(
      to bottom,
      rgba(248, 250, 252, 0.68) 0,
      rgba(248, 250, 252, 0.68) var(--focus-top),
      transparent var(--focus-top),
      transparent var(--focus-bottom),
      rgba(248, 250, 252, 0.68) var(--focus-bottom),
      rgba(248, 250, 252, 0.68) 100%
    );
}

.dark .editor-focus-mask {
  background:
    linear-gradient(
      to bottom,
      rgba(2, 6, 23, 0.62) 0,
      rgba(2, 6, 23, 0.62) var(--focus-top),
      transparent var(--focus-top),
      transparent var(--focus-bottom),
      rgba(2, 6, 23, 0.62) var(--focus-bottom),
      rgba(2, 6, 23, 0.62) 100%
    );
}

.editor-focus-mask.is-active {
  opacity: 1;
}

.selection-toolbar {
  position: absolute;
  top: 12px;
  right: 14px;
  z-index: 5;
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  max-width: calc(100% - 28px);
  padding: 8px 10px;
  border: 1px solid var(--border-soft);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 18px 38px rgba(15, 23, 42, 0.12);
  backdrop-filter: blur(16px);
}

.dark .selection-toolbar {
  background: rgba(2, 6, 23, 0.92);
}

.selection-toolbar__meta {
  display: inline-flex;
  align-items: center;
  padding-right: 4px;
  color: var(--text-muted);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.03em;
  white-space: nowrap;
}

.selection-toolbar__btn {
  appearance: none;
  border: 1px solid var(--border-soft);
  border-radius: 12px;
  background: rgba(248, 250, 252, 0.92);
  color: var(--text-base);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 10px;
  font-size: 0.76rem;
  font-weight: 700;
  line-height: 1;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease, color 160ms ease, box-shadow 160ms ease;
}

.dark .selection-toolbar__btn {
  background: rgba(15, 23, 42, 0.9);
}

.selection-toolbar__btn:hover,
.selection-toolbar__btn:focus-visible {
  transform: translateY(-1px);
  border-color: var(--border-strong);
  color: var(--accent-strong);
  outline: none;
}

.selection-toolbar__btn.is-accent {
  background: rgba(14, 165, 233, 0.1);
  border-color: rgba(14, 165, 233, 0.26);
  color: var(--accent-strong);
}

.selection-toolbar__btn-icon {
  font-size: 0.86rem;
}

.selection-toolbar__btn-label {
  white-space: nowrap;
}

.slash-menu {
  position: absolute;
  left: 16px;
  right: 16px;
  z-index: 6;
  max-width: 560px;
  border: 1px solid var(--border-soft);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 24px 52px rgba(15, 23, 42, 0.18);
  backdrop-filter: blur(18px);
  overflow: hidden;
}

.dark .slash-menu {
  background: rgba(2, 6, 23, 0.94);
}

.slash-menu__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-soft);
  background: linear-gradient(180deg, rgba(14, 165, 233, 0.08) 0%, transparent 100%);
}

.slash-menu__header-copy {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.slash-menu__title {
  font-size: 0.94rem;
  font-weight: 800;
  color: var(--text-strong);
}

.slash-menu__subtitle {
  color: var(--text-muted);
  font-size: 0.76rem;
  line-height: 1.45;
}

.slash-menu__query {
  display: inline-flex;
  align-items: center;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(14, 165, 233, 0.12);
  color: var(--accent-strong);
  font-size: 0.76rem;
  font-weight: 800;
  white-space: nowrap;
}

.slash-menu__list {
  max-height: 288px;
  overflow: auto;
}

.slash-menu__item {
  width: 100%;
  appearance: none;
  border: 0;
  border-bottom: 1px solid rgba(148, 163, 184, 0.14);
  background: transparent;
  color: var(--text-base);
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 14px;
  text-align: left;
  transition: background 160ms ease, color 160ms ease;
}

.slash-menu__item:last-child {
  border-bottom: 0;
}

.slash-menu__item:hover,
.slash-menu__item:focus-visible,
.slash-menu__item.is-active {
  background: rgba(14, 165, 233, 0.08);
  color: var(--text-strong);
  outline: none;
}

.slash-menu__icon {
  width: 28px;
  min-width: 28px;
  height: 28px;
  border-radius: 10px;
  background: rgba(14, 165, 233, 0.12);
  color: var(--accent-strong);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.78rem;
  font-weight: 800;
}

.slash-menu__body {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.slash-menu__label {
  font-size: 0.84rem;
  font-weight: 800;
  color: var(--text-strong);
}

.slash-menu__description {
  color: var(--text-muted);
  font-size: 0.75rem;
  line-height: 1.45;
}

.slash-menu__empty {
  padding: 18px 14px;
  color: var(--text-muted);
  font-size: 0.82rem;
}

.drop-overlay__content {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.drop-overlay__title {
  font-size: 0.96rem;
  font-weight: 800;
  color: var(--text-strong);
}

.drop-overlay__copy {
  color: var(--text-muted);
  font-size: 0.84rem;
  line-height: 1.5;
}

.app-statusbar--patch7 .status-cluster--signals {
  gap: 6px;
}

@media (max-width: 1040px) {
  .selection-toolbar {
    left: 12px;
    right: 12px;
  }

  .slash-menu {
    left: 12px;
    right: 12px;
    max-width: none;
  }
}

@media (max-width: 760px) {
  .selection-toolbar {
    top: 10px;
    padding: 8px;
    gap: 6px;
  }

  .selection-toolbar__meta {
    width: 100%;
    padding-right: 0;
  }

  .slash-menu {
    border-radius: 18px;
  }
}

/* ===== Patch 8: stability, accessibility, performance, and laptop polish ===== */
.app-topbar--patch8 {
  gap: 12px;
  padding: 10px 12px;
}

.topbar-left--patch8 {
  min-width: 0;
  flex: 1 1 auto;
}

.topbar-center--patch8 {
  flex: 0 1 auto;
}

.topbar-actions--patch8 {
  gap: 6px;
}

.topbar-doc-anchor--patch8 {
  min-width: 0;
  max-width: min(520px, 100%);
  padding: 10px 12px;
  gap: 10px;
}

.topbar-doc-anchor--patch8 .brand-logo--mini {
  width: 34px;
  height: 34px;
  border-radius: 11px;
  font-size: 0.95rem;
}

.topbar-doc-anchor--patch8 .topbar-doc-copy {
  min-width: 0;
}

.topbar-doc-anchor--patch8 .topbar-doc-title {
  display: block;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.topbar-doc-state--muted {
  display: block;
  margin-top: 3px;
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.topbar-doc-popover--patch8 {
  max-height: min(72vh, 560px);
  overscroll-behavior: contain;
}

.patch8-doc-summary {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  padding: 0 14px 14px;
}

.patch8-doc-summary__item {
  display: grid;
  gap: 5px;
  padding: 11px 12px;
  border: 1px solid var(--border-soft);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.58);
}

.dark .patch8-doc-summary__item {
  background: rgba(15, 23, 42, 0.58);
}

.patch8-doc-summary__label {
  color: var(--text-muted);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.patch8-doc-summary__value {
  color: var(--text-strong);
  font-size: 0.84rem;
  font-weight: 700;
  line-height: 1.45;
}

.toolbar-shell--patch8 {
  border-top: 0;
}

.toolbar-menubar--patch8 {
  gap: 10px;
  padding: 8px 12px;
}

.toolbar-menubar--patch8 .toolbar-menubar__left {
  min-width: 0;
  overflow-x: auto;
  padding-bottom: 2px;
}

.toolbar-menubar--patch8 .toolbar-menubar__right {
  gap: 6px;
  flex-wrap: nowrap;
}

.toolbar-menubar--patch8 .toolbar-btn {
  padding: 0.5rem 0.58rem;
  min-width: 40px;
  justify-content: center;
}

.toolbar-menubar--patch8 .toolbar-btn__label {
  display: none;
}

.toolbar-menubar--patch8 .toolbar-menu-pill {
  padding: 0.54rem 0.76rem;
}

.toolbar-panel--patch8 {
  display: flex;
  flex-direction: column;
  max-height: min(62vh, 620px);
  overflow: hidden;
}

.toolbar-panel--patch8 .toolbar-panel__header {
  flex-shrink: 0;
}

.toolbar-panel--patch8 .toolbar-panel__content {
  flex: 1 1 auto;
  min-height: 0;
  max-height: none;
  padding-bottom: 14px;
  overscroll-behavior: contain;
}

.pane-header--compact {
  padding: 12px 14px;
}

.pane--preview .preview-sync-meter {
  width: auto;
  height: 10px;
  margin: 12px 18px 0;
}

.pane--preview .preview-scroller {
  padding-top: 12px;
}

.preview-scroller,
.modal-card__body,
.utility-sidebar__body,
.topbar-doc-popover,
.toolbar-panel__content {
  overscroll-behavior: contain;
}

.app-statusbar--patch8 {
  gap: 10px;
  padding: 8px 12px;
}

.app-statusbar--patch8 .status-chip,
.app-statusbar--patch8 .status-metric {
  font-size: 0.72rem;
}

.app-statusbar--patch8 .status-cluster--metrics,
.app-statusbar--patch8 .status-cluster--signals {
  gap: 6px;
}

.modal-backdrop {
  overflow: auto;
}

.modal-card {
  display: flex;
  flex-direction: column;
}

.modal-card__header,
.modal-card__footer {
  flex-shrink: 0;
}

.modal-card__body {
  flex: 1 1 auto;
  min-height: 0;
}

.modal-card--patch8,
.modal-card--settings,
.modal-card--welcome,
.modal-card--release,
.modal-card--versions,
.modal-card--diff,
.modal-card--patch4,
.modal-card--composer {
  max-height: min(88vh, calc(100vh - 32px));
}

.utility-sidebar {
  max-height: calc(100% - 24px);
}

.utility-sidebar__body {
  padding-bottom: 22px;
}

@media (max-width: 1320px) {
  .app-topbar--patch8 {
    flex-wrap: wrap;
  }

  .topbar-center--patch8 {
    order: 3;
    width: 100%;
    justify-content: flex-start;
  }

  .topbar-actions--patch8 {
    order: 2;
    margin-left: auto;
  }

  .toolbar-menubar--patch8 {
    flex-wrap: wrap;
  }

  .toolbar-menubar--patch8 .toolbar-menubar__right {
    width: 100%;
    justify-content: flex-start;
  }
}

@media (max-width: 1200px), (max-height: 900px) {
  .workspace-wrap {
    padding: 10px;
  }

  .toolbar-panel--patch8 {
    max-height: min(66vh, calc(100vh - 220px));
  }

  .modal-backdrop {
    align-items: flex-start;
    padding: 10px;
  }

  .modal-card,
  .modal-card--patch8,
  .modal-card--settings,
  .modal-card--welcome,
  .modal-card--release,
  .modal-card--versions,
  .modal-card--diff,
  .modal-card--patch4,
  .modal-card--composer {
    width: min(100%, 1080px);
    max-height: calc(100vh - 20px);
    border-radius: 22px;
  }

  .topbar-doc-popover--patch8 {
    width: min(420px, calc(100vw - 24px));
  }

  .utility-sidebar {
    top: 8px;
    right: 8px;
    bottom: 8px;
    width: min(360px, calc(100% - 16px));
  }
}

@media (max-width: 1100px) {
  .topbar-actions--patch8 .app-btn span:last-child {
    display: none;
  }

  .topbar-actions--patch8 .app-btn {
    padding: 0.58rem;
    min-width: 42px;
    justify-content: center;
  }
}

@media (max-width: 960px), (max-height: 780px) {
  .app-topbar--patch8 {
    gap: 10px;
    padding: 8px 10px;
  }

  .toolbar-menubar--patch8 {
    padding: 8px 10px;
  }

  .workspace-wrap {
    padding: 8px;
  }

  .pane-header--compact {
    padding: 10px 12px;
  }

  .pane--preview .preview-sync-meter {
    margin: 10px 14px 0;
  }

  .pane--preview .preview-scroller {
    padding: 10px 14px 14px;
  }

  .patch8-doc-summary {
    grid-template-columns: 1fr;
  }

  .modal-backdrop {
    padding: 8px;
  }

  .modal-card,
  .modal-card--patch8,
  .modal-card--settings,
  .modal-card--welcome,
  .modal-card--release,
  .modal-card--versions,
  .modal-card--diff,
  .modal-card--patch4,
  .modal-card--composer {
    max-height: calc(100vh - 16px);
    border-radius: 18px;
  }

  .utility-sidebar {
    width: min(100%, calc(100% - 16px));
  }
}

@media (max-width: 720px) {
  .toolbar-menubar--patch8 .toolbar-menu-pill__label {
    font-size: 0.78rem;
  }

  .topbar-doc-anchor--patch8 {
    max-width: 100%;
  }
}

/* ===== Patch 9: GitHub Pages, app setup, and browser backup ===== */
.app-topbar--patch9 {
  gap: 14px;
}

.app-topbar--patch9 .topbar-doc-state {
  max-width: 280px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.topbar-doc-popover--patch9 {
  width: min(94vw, 620px);
}

.patch9-doc-summary {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.patch9-doc-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.modal-card--patch9-web {
  width: min(920px, 96vw);
  max-height: min(88vh, 920px);
}

.patch9-hero {
  align-items: flex-start;
}

.patch9-web-body {
  display: grid;
  gap: 18px;
}

.patch9-web-section {
  display: grid;
  gap: 14px;
}

.patch9-info-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  padding: 14px 16px;
  border: 1px solid var(--border-soft);
  border-radius: 18px;
  background: var(--pane-bg);
}

.patch9-info-row__copy {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.patch9-info-row__title {
  margin: 0;
  font-size: 0.98rem;
  color: var(--text-strong);
}

.patch9-info-row__description {
  margin: 0;
  color: var(--text-muted);
  line-height: 1.55;
}

.patch9-info-row__value {
  display: grid;
  justify-items: flex-end;
  gap: 6px;
  min-width: 180px;
  color: var(--text-base);
}

.patch9-info-row__value strong {
  font-size: 0.95rem;
  color: var(--text-strong);
}

.patch9-info-row__meta {
  font-size: 0.82rem;
  color: var(--text-muted);
  text-align: right;
}

.patch9-actions {
  flex-wrap: wrap;
}

.patch9-note {
  padding: 14px 16px;
  border-radius: 16px;
  border: 1px dashed var(--border-soft);
  color: var(--text-muted);
  background: var(--pane-muted);
  line-height: 1.55;
}

.modal-card--patch9 .welcome-feature-grid,
.modal-card--patch9 .welcome-grid {
  gap: 16px;
}

.modal-card--patch9 .welcome-feature-card,
.modal-card--patch9 .welcome-panel {
  background: var(--pane-bg);
  border: 1px solid var(--border-soft);
}

.has-web-modal .app-frame {
  isolation: isolate;
}

@media (max-width: 980px) {
  .modal-card--patch9-web {
    width: min(96vw, 760px);
  }

  .app-topbar--patch9 .topbar-doc-state {
    max-width: 220px;
  }
}

@media (max-width: 820px) {
  .patch9-doc-summary {
    grid-template-columns: 1fr;
  }

  .patch9-info-row {
    flex-direction: column;
  }

  .patch9-info-row__value {
    justify-items: flex-start;
    min-width: 0;
  }

  .patch9-info-row__meta {
    text-align: left;
  }
}