:root {
  --ink: #1c1917;
  --ink-muted: #57534e;
  --paper: #f3f0eb;
  --workspace: #e4dfd6;
  --surface: #ffffff;
  --line: #e7e5e4;
  --accent: #0f766e;
  --accent-soft: #ccfbf1;
  --radius-sm: 6px;
  --radius-lg: 16px;
  --shadow: 0 1px 2px rgb(28 25 23 / 0.04), 0 8px 24px rgb(28 25 23 / 0.08);
  --font: "Segoe UI", system-ui, -apple-system, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html,
body {
  height: 100%;
  margin: 0;
  overflow: hidden;
}

body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}

.app {
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 100dvh;
}

.chrome {
  flex-shrink: 0;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  user-select: none;
}

.menubar {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 36px;
  padding: 0 10px 0 12px;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.brand-mark {
  display: flex;
  color: var(--accent);
}

.brand h1 {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.board-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  min-width: 0;
  max-width: 320px;
}

.menubar-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  height: 26px;
  padding: 0 8px;
  border-radius: var(--radius-sm);
  color: var(--ink);
  font-size: 0.76rem;
  font-weight: 600;
  background: var(--paper);
  border: 1px solid var(--line);
  transition: background 0.12s, border-color 0.12s;
  white-space: nowrap;
}

.menubar-btn:hover {
  background: var(--surface);
  border-color: var(--accent);
  color: var(--accent);
}

.board-meta-divider {
  color: var(--line);
  font-size: 0.8rem;
}

.board-title-input {
  height: 26px;
  padding: 0 6px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--ink);
  font: inherit;
  font-size: 0.8rem;
  font-weight: 600;
  text-overflow: ellipsis;
  max-width: 150px;
  transition: border-color 0.15s, background 0.15s;
}

.board-title-input:hover {
  background: var(--paper);
  border-color: var(--line);
}

.board-title-input:focus {
  background: var(--surface);
  border-color: var(--accent);
  outline: none;
  box-shadow: 0 0 0 2px var(--accent-soft);
}

.save-status {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.68rem;
  color: var(--ink-muted);
  white-space: nowrap;
  padding: 2px 6px;
  border-radius: 4px;
  background: var(--paper);
  opacity: 0.85;
}

.save-status.is-saving {
  color: #d97706;
}

.save-status.is-error {
  color: #e11d48;
}

.menubar-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.menubar-install-btn {
  background: var(--accent-soft);
  border-color: rgba(15, 118, 110, 0.3);
  color: var(--accent);
  cursor: pointer;
  animation: pulse-install 2s infinite ease-in-out;
}

.menubar-install-btn:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #ffffff;
}

@keyframes pulse-install {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(15, 118, 110, 0.3);
  }
  50% {
    box-shadow: 0 0 0 4px rgba(15, 118, 110, 0);
  }
}

.ribbon-tabs {
  display: flex;
  align-items: stretch;
  gap: 2px;
  min-width: 0;
  overflow-x: auto;
}

.ribbon-tab {
  padding: 8px 12px;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  color: var(--ink-muted);
  font-size: 0.82rem;
  white-space: nowrap;
}

.ribbon-tab:hover {
  color: var(--ink);
  background: var(--paper);
}

.ribbon-tab[aria-selected="true"] {
  color: var(--accent);
  font-weight: 600;
  box-shadow: inset 0 -2px 0 var(--accent);
}

.ribbon-tab:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}

.ribbon {
  display: flex;
  align-items: flex-start;
  height: 90px;
  min-height: 90px;
  max-height: 90px;
  overflow: hidden;
}

.ribbon-panels {
  flex: 1;
  min-width: 0;
  height: 90px;
  overflow-x: auto;
  overflow-y: hidden;
  overscroll-behavior-x: contain;
  scrollbar-gutter: stable;
  scrollbar-width: thin;
  scrollbar-color: #a8a29e var(--paper);
}

.ribbon-panels::-webkit-scrollbar {
  height: 10px;
}

.ribbon-panels::-webkit-scrollbar-track {
  background: var(--paper);
}

.ribbon-panels::-webkit-scrollbar-thumb {
  background: #a8a29e;
  border-radius: 8px;
}

.ribbon-panels::-webkit-scrollbar-thumb:hover {
  background: #78716c;
}

.ribbon-panel {
  display: flex;
  flex-wrap: nowrap;
  align-items: stretch;
  width: max-content;
  min-width: 100%;
  height: 80px;
  min-height: 80px;
  max-height: 80px;
  overflow: visible;
}

.ribbon-panel[hidden] {
  display: none;
}

.ribbon-persistent {
  display: flex;
  align-items: stretch;
  flex: 0 1 auto;
  min-width: 0;
  height: 80px;
  overflow: hidden;
  border-left: 1px solid var(--line);
}

.ribbon-group {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  justify-content: space-between;
  gap: 4px;
  flex: 0 0 auto;
  height: 100%;
  padding: 6px 8px 4px;
  border-right: 1px solid var(--line);
}

.ribbon-group:last-child {
  border-right: 0;
}

.ribbon-group-main {
  display: flex;
  flex: 1 1 auto;
  align-items: center;
  gap: 2px;
  width: max-content;
  height: 48px;
}

.ribbon-group-tools {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 2px;
  width: max-content;
  height: 48px;
  overflow: visible;
}

.page-size-tools,
.page-template-tools,
.page-look-tools,
.format-tools,
.image-tools {
  flex-wrap: nowrap;
  max-width: none;
}

.page-color-field {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-right: 4px;
  color: var(--ink-muted);
  font-size: 0.7rem;
  font-weight: 600;
}

.page-color-field input {
  width: 28px;
  height: 28px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface);
  cursor: pointer;
}

.page-name-field input,
.page-dim-field input {
  height: 32px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--ink);
  font: inherit;
  font-size: 0.8rem;
}

.page-name-field input {
  width: 148px;
  padding: 0 8px;
}

.page-dim-field {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: 4px;
  color: var(--ink-muted);
  font-size: 0.7rem;
  font-weight: 600;
}

.page-dim-field input {
  width: 64px;
  padding: 0 6px;
}

.page-name-field input:focus-visible,
.page-dim-field input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.align-grid {
  display: grid;
  grid-template-columns: repeat(3, 22px);
  gap: 1px;
  margin-left: 4px;
}

.align-grid .ribbon-btn {
  width: 22px;
  height: 22px;
}

.align-grid .ribbon-btn svg {
  width: 14px;
  height: 14px;
}

.ribbon-group-label {
  width: 0;
  min-width: 100%;
  font-size: 0.65rem;
  letter-spacing: 0.02em;
  color: var(--ink-muted);
  line-height: 1;
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.ribbon-more {
  display: grid;
  place-items: center;
  flex-shrink: 0;
  width: 18px;
  height: 48px;
  border-radius: var(--radius-sm);
  color: var(--ink-muted);
}

.ribbon-more svg {
  width: 12px;
  height: 12px;
}

.ribbon-more:hover,
.ribbon-more[aria-expanded="true"] {
  background: var(--paper);
  color: var(--ink);
}

.ribbon-more[hidden] {
  display: none;
}

.ribbon-group.is-collapsed {
  min-width: 4.5rem;
}

.ribbon-group.is-collapsed .ribbon-more {
  width: 100%;
}

.ribbon-menu {
  position: fixed;
  z-index: 40;
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 196px;
  max-height: min(360px, calc(100vh - 120px));
  overflow: auto;
  padding: 6px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.ribbon-menu[hidden] {
  display: none;
}

.ribbon-menu .ribbon-btn,
.ribbon-menu .ribbon-btn-wide {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  width: 100%;
  height: auto;
  min-height: 32px;
  padding: 4px 8px;
  gap: 8px;
  font-weight: 500;
}

.ribbon-menu .ribbon-btn svg {
  flex-shrink: 0;
}

.ribbon-menu .visually-hidden {
  position: static;
  width: auto;
  height: auto;
  margin: 0;
  overflow: visible;
  clip: auto;
  white-space: nowrap;
}

.ribbon-menu .page-dim-field,
.ribbon-menu .page-color-field,
.ribbon-menu .font-size-field,
.ribbon-menu .page-name-field {
  margin: 4px 6px;
}

.ribbon-menu .align-grid {
  margin: 4px 6px;
}

.ribbon-menu .swatches {
  flex-wrap: wrap;
  max-width: 168px;
  margin: 4px 6px;
}

.ribbon-btn {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  color: var(--ink-muted);
}

.ribbon-btn svg {
  width: 18px;
  height: 18px;
  display: block;
}

.ribbon-btn:hover:not(:disabled) {
  background: var(--paper);
  color: var(--ink);
}

.ribbon-btn:disabled {
  opacity: 0.38;
  cursor: default;
}

.ribbon-btn:focus-visible,
.swatch:focus-visible,
.color-target:focus-visible,
.size-control input:focus-visible,
.swatch-custom:focus-within,
.font-size-field select:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.ribbon-btn[aria-pressed="true"] {
  background: var(--accent-soft);
  color: var(--accent);
}

.ribbon-btn[hidden] {
  display: none;
}

.ribbon-btn-wide {
  width: auto;
  padding: 0 10px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--ink-muted);
}

.ribbon-hint {
  display: none;
}

.font-size-field {
  margin-left: 4px;
}

.font-size-field select {
  height: 32px;
  padding: 0 6px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--ink);
  font: inherit;
  font-size: 0.8rem;
  max-width: 88px;
}

.color-tools {
  gap: 8px;
}

.color-targets {
  display: flex;
  gap: 2px;
}

.color-target {
  display: grid;
  place-items: center;
  width: 28px;
  height: 32px;
  border-radius: var(--radius-sm);
}

.color-target[aria-pressed="true"] {
  background: var(--accent-soft);
}

.color-target-chip {
  width: 14px;
  height: 14px;
  border-radius: 3px;
  border: 1.5px solid rgb(28 25 23 / 0.28);
  background: #fff;
}

.color-target.is-none .color-target-chip {
  background:
    linear-gradient(
      to bottom right,
      transparent 46%,
      #b91c1c 46%,
      #b91c1c 54%,
      transparent 54%
    ),
    #fff;
}

.swatches {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: 6px;
}

.swatch {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 1px solid rgb(28 25 23 / 0.16);
  cursor: pointer;
}

.swatch[aria-pressed="true"],
.swatch-custom.is-selected {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.swatch-custom {
  position: relative;
  overflow: hidden;
  background: conic-gradient(
    from 90deg,
    #ef4444,
    #eab308,
    #22c55e,
    #3b82f6,
    #a855f7,
    #ef4444
  );
}

.swatch-custom input[type="color"] {
  position: absolute;
  inset: -50%;
  width: 200%;
  height: 200%;
  padding: 0;
  border: 0;
  opacity: 0;
  cursor: pointer;
}

.swatch-none {
  background:
    linear-gradient(
      to bottom right,
      transparent 46%,
      #b91c1c 46%,
      #b91c1c 54%,
      transparent 54%
    ),
    #fff;
}

.size-control {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  min-width: 72px;
}

.size-control output {
  font-size: 0.7rem;
  font-variant-numeric: tabular-nums;
  color: var(--ink-muted);
  line-height: 1;
}

.size-control input[type="range"] {
  width: 72px;
  height: 16px;
  margin: 0;
  accent-color: var(--accent);
}

.ribbon-panel-help {
  overflow: visible;
}

.shortcut-list {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: 6px 16px;
  height: 100%;
  padding: 8px 14px;
}

.shortcut-list span {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.75rem;
  color: var(--ink-muted);
  white-space: nowrap;
}

kbd {
  display: inline-block;
  min-width: 1.2em;
  padding: 1px 5px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--paper);
  color: var(--ink);
  font: 0.7rem var(--font);
  text-align: center;
}

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

.canvas-wrap {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: var(--workspace);
  touch-action: none;
  user-select: none;
}

.canvas-wrap.is-drop-target::after {
  content: "";
  position: absolute;
  inset: 10px;
  border: 2px dashed var(--accent);
  border-radius: 12px;
  pointer-events: none;
}

.layers-panel {
  position: absolute;
  top: 10px;
  right: 10px;
  z-index: 3;
  display: flex;
  flex-direction: column;
  width: 252px;
  max-height: min(460px, calc(100% - 20px));
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  box-shadow: var(--shadow);
  color: var(--ink);
  user-select: none;
}

.layers-panel[hidden] {
  display: none;
}

.layers-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 8px 10px 6px;
  border-bottom: 1px solid var(--line);
}

.layers-title {
  margin: 0;
  font-size: 0.75rem;
  font-weight: 650;
  letter-spacing: 0.02em;
}

.layers-close {
  width: 24px;
  height: 24px;
  border-radius: var(--radius-sm);
  color: var(--ink-muted);
  font-size: 1.1rem;
  line-height: 1;
}

.layers-close:hover {
  background: var(--paper);
  color: var(--ink);
}

.layers-tools {
  display: flex;
  gap: 3px;
  padding: 6px 8px;
  border-bottom: 1px solid var(--line);
}

.layers-tool {
  flex: 1;
  height: 24px;
  padding: 0 4px;
  border-radius: 4px;
  font-size: 0.65rem;
  font-weight: 650;
  color: var(--ink-muted);
}

.layers-tool:hover:not(:disabled) {
  background: var(--paper);
  color: var(--ink);
}

.layers-tool:disabled {
  opacity: 0.38;
}

.layers-list {
  margin: 0;
  padding: 4px;
  overflow-y: auto;
  overflow-x: hidden;
  list-style: none;
  scrollbar-width: thin;
  scrollbar-color: #a8a29e var(--surface);
}

.layers-list::-webkit-scrollbar {
  width: 6px;
}

.layers-list::-webkit-scrollbar-thumb {
  background: #a8a29e;
  border-radius: 4px;
}

.layers-empty {
  margin: 0;
  padding: 16px 10px;
  color: var(--ink-muted);
  font-size: 0.75rem;
  text-align: center;
}

.layer-row {
  display: grid;
  grid-template-columns: 20px 20px 18px minmax(0, 1fr);
  align-items: center;
  gap: 2px;
  min-height: 28px;
  padding: 2px 4px;
  border-radius: 6px;
  cursor: grab;
  transition: background 0.12s ease, box-shadow 0.12s ease;
}

.layer-row:hover {
  background: var(--paper);
}

.layer-row.is-selected {
  background: var(--accent-soft);
  color: var(--accent-ink);
}

.layer-row.is-grouped {
  border-left: 2.5px solid var(--accent);
  padding-left: 3px;
}

.layer-row.is-dragging {
  opacity: 0.3;
  background: var(--accent-soft);
}

.layer-row.drop-above {
  box-shadow: inset 0 2.5px 0 0 var(--accent);
}

.layer-row.drop-below {
  box-shadow: inset 0 -2.5px 0 0 var(--accent);
}

.layer-row.is-hidden .layer-label {
  opacity: 0.45;
  text-decoration: line-through;
}

.layer-row.is-locked .layer-label {
  font-style: italic;
}

.layer-icon,
.layer-kind,
.layer-label {
  min-width: 0;
  height: 22px;
  border-radius: 4px;
  color: var(--ink-muted);
}

.layer-kind {
  display: grid;
  place-items: center;
  pointer-events: none;
  opacity: 0.7;
}

.layer-kind svg {
  width: 13px;
  height: 13px;
}

.layer-icon {
  display: grid;
  place-items: center;
}

.layer-icon svg {
  width: 14px;
  height: 14px;
}

.layer-icon:hover {
  background: var(--paper);
  color: var(--ink);
}

.layer-icon[data-layer-lock].is-locked {
  color: #e11d48;
}

.layer-label {
  overflow: hidden;
  padding: 0 4px;
  font-size: 0.72rem;
  font-weight: 500;
  text-align: left;
  text-overflow: ellipsis;
  white-space: nowrap;
  border: none;
  background: transparent;
  cursor: pointer;
}

.layer-label:hover {
  color: var(--ink);
}

.layer-label-input {
  width: 100%;
  height: 22px;
  padding: 0 5px;
  background: var(--paper);
  color: var(--ink);
  border: 1px solid var(--accent);
  border-radius: 4px;
  font: inherit;
  font-size: 0.72rem;
  outline: none;
  box-shadow: 0 0 0 2px var(--accent-soft);
}

.statusbar {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 52px;
  padding: 6px 12px;
  background: var(--surface);
  border-top: 1px solid var(--line);
  color: var(--ink-muted);
  font-size: 0.72rem;
  flex-shrink: 0;
  user-select: none;
}

.page-strip {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  flex: 1;
}

.page-thumbs {
  display: flex;
  align-items: center;
  gap: 6px;
  min-width: 0;
  overflow-x: auto;
}

.page-thumb {
  flex-shrink: 0;
  width: 36px;
  height: 44px;
  padding: 2px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--workspace);
}

.page-thumb canvas {
  display: block;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.page-thumb[aria-current="true"] {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
}

.page-thumb:hover {
  border-color: var(--ink-muted);
}

.page-add-btn {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border: 1px dashed var(--line);
  border-radius: 4px;
  color: var(--ink-muted);
  font-size: 1rem;
  line-height: 1;
}

.page-add-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-soft);
}

.status-item {
  flex-shrink: 0;
  cursor: default;
}

.status-zoom {
  padding: 0 4px;
  border-radius: 4px;
  cursor: pointer;
}

.status-zoom:hover {
  color: var(--ink);
  background: var(--paper);
}

.dialog {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: grid;
  place-items: center;
  padding: 16px;
  background: rgb(28 25 23 / 0.28);
}

.dialog[hidden] {
  display: none;
}

.dialog-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: min(360px, 100%);
  padding: 16px 18px 14px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow);
}

.dialog-copy {
  margin: 0;
  color: var(--ink-muted);
  font-size: 0.82rem;
  line-height: 1.4;
}

.ribbon-btn-symbol {
  font-size: 1rem;
  font-weight: 600;
  line-height: 1;
}

.app.is-frozen #board {
  cursor: default;
}

#board[data-cursor="laser"] {
  cursor: none;
}

#board[data-cursor="measure"],
#board[data-cursor="protractor"],
#board[data-cursor="compass"] {
  cursor: crosshair;
}

.dialog-card h2 {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 600;
}

.dialog-field {
  display: flex;
  flex-direction: column;
  gap: 4px;
  color: var(--ink-muted);
  font-size: 0.75rem;
  font-weight: 600;
}

.dialog-field input {
  height: 34px;
  padding: 0 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--ink);
  font: inherit;
  font-size: 0.85rem;
  font-weight: 400;
}

.dialog-field input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.dialog-error {
  margin: 0;
  color: #b91c1c;
  font-size: 0.75rem;
}

.dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

.dialog-btn {
  height: 32px;
  padding: 0 12px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--ink-muted);
}

.dialog-btn:hover {
  background: var(--paper);
  color: var(--ink);
}

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

.dialog-btn-primary:hover {
  background: #0d9488;
  color: #fff;
}

.projects-card {
  width: min(820px, 92vw);
  max-width: 820px;
  max-height: min(600px, 90vh);
  display: flex;
  flex-direction: column;
  padding: 18px 20px;
  gap: 14px;
}

.projects-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.projects-head-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.projects-title {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.projects-subtitle {
  margin: 0;
  font-size: 0.76rem;
  color: var(--ink-muted);
}

.projects-close {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-sm);
  color: var(--ink-muted);
  font-size: 1.3rem;
  line-height: 1;
}

.projects-close:hover {
  background: var(--paper);
  color: var(--ink);
}

.projects-bar {
  display: flex;
  align-items: center;
  gap: 10px;
}

.projects-search-wrap {
  position: relative;
  flex: 1;
  display: flex;
  align-items: center;
}

.projects-search-icon {
  position: absolute;
  left: 10px;
  width: 15px;
  height: 15px;
  color: var(--ink-muted);
  pointer-events: none;
}

.projects-search-wrap input {
  width: 100%;
  height: 34px;
  padding: 0 10px 0 32px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--paper);
  color: var(--ink);
  font: inherit;
  font-size: 0.8rem;
  outline: none;
  transition: border-color 0.15s;
}

.projects-search-wrap input:focus {
  border-color: var(--accent);
  background: var(--surface);
  box-shadow: 0 0 0 2px var(--accent-soft);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(215px, 1fr));
  gap: 14px;
  overflow-y: auto;
  max-height: 360px;
  padding: 4px;
  scrollbar-width: thin;
  scrollbar-color: #a8a29e var(--surface);
}

.projects-grid::-webkit-scrollbar {
  width: 6px;
}

.projects-grid::-webkit-scrollbar-thumb {
  background: #a8a29e;
  border-radius: 4px;
}

.project-card {
  display: flex;
  flex-direction: column;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  transition: transform 0.14s ease, box-shadow 0.14s ease, border-color 0.14s ease;
  position: relative;
  cursor: pointer;
}

.project-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
  border-color: var(--accent);
}

.project-card.is-active {
  border-color: var(--accent);
  box-shadow: 0 0 0 1.5px var(--accent);
}

.project-thumb-box {
  width: 100%;
  height: 120px;
  background: #e7e5e4;
  position: relative;
  overflow: hidden;
  display: grid;
  place-items: center;
}

.project-thumb-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.project-badge-active {
  position: absolute;
  top: 7px;
  left: 7px;
  background: var(--accent);
  color: #fff;
  font-size: 0.62rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 2px 6px;
  border-radius: 4px;
  box-shadow: 0 1px 3px rgb(0 0 0 / 0.2);
}

.project-card-body {
  padding: 10px 10px 8px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  background: var(--surface);
  flex: 1;
}

.project-card-title {
  margin: 0;
  font-size: 0.82rem;
  font-weight: 650;
  color: var(--ink);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.project-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.68rem;
  color: var(--ink-muted);
}

.project-card-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 4px;
  margin-top: 6px;
  padding-top: 6px;
  border-top: 1px solid var(--line);
}

.project-action-btn {
  height: 24px;
  padding: 0 6px;
  border-radius: 4px;
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--ink-muted);
  display: inline-flex;
  align-items: center;
  gap: 3px;
}

.project-action-btn:hover {
  background: var(--paper);
  color: var(--ink);
}

.project-action-btn.is-delete:hover {
  background: #fee2e2;
  color: #e11d48;
}

.projects-empty {
  margin: 0;
  padding: 40px 16px;
  text-align: center;
  color: var(--ink-muted);
  font-size: 0.82rem;
}

.projects-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 8px;
  border-top: 1px solid var(--line);
}

.projects-count {
  font-size: 0.72rem;
  color: var(--ink-muted);
}

.text-editor {
  position: absolute;
  z-index: 1;
  margin: 0;
  padding: 10px 12px;
  border: 1px solid var(--accent);
  border-radius: 2px;
  background: rgb(255 255 255 / 0.94);
  color: var(--ink);
  font: inherit;
  line-height: 1.35;
  overflow: hidden;
  resize: none;
  outline: none;
  box-shadow: var(--shadow);
  user-select: text;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.text-editor.is-sticky {
  background: transparent;
  border-radius: 8px;
  box-shadow: none;
}

.text-editor.is-table-cell {
  padding: 4px 6px;
  border-radius: 0;
  box-shadow: none;
}

#board[data-cursor="text"] {
  cursor: text;
}

#board[data-cursor="fill"] {
  cursor: cell;
}

#board[data-cursor="eyedropper"] {
  cursor: copy;
}

#board {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
  cursor: crosshair;
}

#board[data-cursor="select"] {
  cursor: default;
}

#board[data-cursor="pan"] {
  cursor: grab;
}

#board.is-panning,
#board[data-cursor="pan"].is-panning {
  cursor: grabbing;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.export-card {
  width: min(780px, 94vw);
  max-width: 780px;
  max-height: min(620px, 92vh);
  display: flex;
  flex-direction: column;
  padding: 18px 20px;
  gap: 14px;
}

.export-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.export-head-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.export-title {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.01em;
}

.export-subtitle {
  margin: 0;
  font-size: 0.76rem;
  color: var(--ink-muted);
}

.export-close {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-sm);
  color: var(--ink-muted);
  font-size: 1.3rem;
  line-height: 1;
}

.export-close:hover {
  background: var(--paper);
  color: var(--ink);
}

.export-body {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 16px;
  overflow-y: auto;
  padding: 2px;
}

@media (max-width: 640px) {
  .export-body {
    grid-template-columns: 1fr;
  }
}

.export-preview-box {
  width: 100%;
  height: 220px;
  background: #e7e5e4;
  border: 1px solid var(--line);
  border-radius: 8px;
  position: relative;
  overflow: hidden;
  display: grid;
  place-items: center;
}

.export-preview-img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  display: block;
}

.export-preview-placeholder {
  font-size: 0.76rem;
  color: var(--ink-muted);
  font-weight: 500;
}

.export-preview-badge {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgb(15 23 42 / 0.75);
  color: #fff;
  font-size: 0.65rem;
  font-weight: 600;
  padding: 3px 6px;
  border-radius: 4px;
  backdrop-filter: blur(4px);
}

.export-options {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.export-option-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.export-label {
  font-size: 0.74rem;
  font-weight: 650;
  color: var(--ink-muted);
}

.export-select,
.export-input {
  height: 32px;
  padding: 0 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--paper);
  color: var(--ink);
  font: inherit;
  font-size: 0.8rem;
  outline: none;
  transition: border-color 0.15s;
}

.export-select:focus,
.export-input:focus {
  border-color: var(--accent);
  background: var(--surface);
  box-shadow: 0 0 0 2px var(--accent-soft);
}

.export-checkbox-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--ink);
  cursor: pointer;
}

.export-range {
  accent-color: var(--accent);
  cursor: pointer;
}

.export-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 10px;
  border-top: 1px solid var(--line);
}

.export-info {
  font-size: 0.72rem;
  color: var(--ink-muted);
}

.export-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Presentation Mode & Fullscreen */
.app.is-presenting {
  user-select: none;
}

.app.is-presenting .chrome,
.app.is-presenting .statusbar,
.app.is-presenting #layers-panel {
  display: none !important;
}

.app.is-presenting .canvas-wrap {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  z-index: 10;
}

.presenter-bar[hidden] {
  display: none !important;
}

.presenter-bar {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  height: 44px;
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 0 10px;
  background: rgba(15, 23, 42, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 9999px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
  color: #f8fafc;
  opacity: 0.95;
  transition: opacity 0.25s ease, transform 0.25s ease, background 0.2s;
}

.presenter-bar:hover {
  opacity: 1;
  background: rgba(15, 23, 42, 0.96);
}

.presenter-bar.is-idle {
  opacity: 0.3;
}

.presenter-bar.is-idle:hover {
  opacity: 1;
}

.presenter-btn {
  width: 32px;
  height: 32px;
  border-radius: 9999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #cbd5e1;
  background: transparent;
  border: none;
  cursor: pointer;
  transition: background 0.12s, color 0.12s, transform 0.12s;
}

.presenter-btn:hover {
  background: rgba(255, 255, 255, 0.15);
  color: #ffffff;
}

.presenter-btn:active {
  transform: scale(0.92);
}

.presenter-btn[aria-pressed="true"] {
  background: var(--accent);
  color: #ffffff;
}

.presenter-status {
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0 8px;
  color: #e2e8f0;
  min-width: 48px;
  text-align: center;
  user-select: none;
}

.presenter-divider {
  width: 1px;
  height: 18px;
  background: rgba(255, 255, 255, 0.15);
  margin: 0 3px;
}

.screen-indicator {
  width: 15px;
  height: 15px;
  border-radius: 3px;
  border: 1px solid rgba(255, 255, 255, 0.4);
  display: block;
}

.screen-indicator-black {
  background: #000000;
}

.screen-indicator-white {
  background: #ffffff;
}

.presenter-btn.is-active-screen {
  box-shadow: 0 0 0 2px #38bdf8;
  background: rgba(56, 189, 248, 0.2);
}

.presenter-btn-exit {
  width: auto;
  padding: 0 10px;
  gap: 4px;
  font-size: 0.74rem;
  font-weight: 600;
  border-radius: 9999px;
  background: rgba(239, 68, 68, 0.2);
  color: #fca5a5;
  margin-left: 2px;
}

.presenter-btn-exit:hover {
  background: #dc2626;
  color: #ffffff;
}

.presentation-curtain[hidden] {
  display: none !important;
}

.presentation-curtain {
  position: fixed;
  inset: 0;
  z-index: 95;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: opacity 0.2s ease;
}

.presentation-curtain.is-black {
  background: #000000;
  color: #ffffff;
}

.presentation-curtain.is-white {
  background: #ffffff;
  color: #0f172a;
}

.curtain-hint {
  padding: 10px 20px;
  border-radius: 9999px;
  font-size: 0.82rem;
  font-weight: 500;
  background: rgba(120, 120, 120, 0.25);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.presentation-curtain:hover .curtain-hint,
.presentation-curtain.show-hint .curtain-hint {
  opacity: 1;
}

.menubar-share-btn {
  background: var(--accent);
  border-color: var(--accent);
  color: #ffffff;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  cursor: pointer;
  transition: background-color 0.15s ease, transform 0.1s ease;
}

.menubar-share-btn:hover {
  background: #0d635c;
  color: #ffffff;
}

.viewer-mode-banner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: #fef3c7;
  border-bottom: 1px solid #fde68a;
  color: #92400e;
  padding: 6px 14px;
  font-size: 0.78rem;
  font-weight: 500;
  z-index: 10;
  animation: slide-down 0.2s ease;
}

.viewer-mode-banner[hidden] {
  display: none !important;
}

@keyframes slide-down {
  from {
    transform: translateY(-100%);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.collab-presence {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  padding: 0 8px;
}

.collab-status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #94a3b8;
  display: inline-block;
  flex-shrink: 0;
  transition: background-color 0.2s ease, box-shadow 0.2s ease;
}

.collab-status-dot[data-status="connected"] {
  background: #10b981;
  box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.25);
}

.collab-status-dot[data-status="connecting"] {
  background: #f59e0b;
  box-shadow: 0 0 0 2px rgba(245, 158, 11, 0.25);
}

.collab-status-dot[data-status="offline"] {
  background: #94a3b8;
}

.collab-label {
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--ink);
  max-width: 110px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.collab-avatars {
  display: flex;
  align-items: center;
  margin-left: 2px;
}

.collab-avatar-chip {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  color: #ffffff;
  font-size: 0.62rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-left: -5px;
  border: 1.5px solid var(--paper);
  text-transform: uppercase;
  flex-shrink: 0;
}

.collab-avatar-chip:first-child {
  margin-left: 0;
}

/* Collab Dialog */
.collab-card {
  width: min(560px, 92vw);
  max-width: 560px;
  max-height: min(88vh, calc(100dvh - 32px));
  display: flex;
  flex-direction: column;
  padding: 20px 22px;
  gap: 16px;
  overflow: hidden;
}

.collab-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  flex-shrink: 0;
}

.collab-head-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.collab-title {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--ink);
}

.collab-subtitle {
  margin: 0;
  font-size: 0.76rem;
  color: var(--ink-muted);
}

.collab-close {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-sm);
  color: var(--ink-muted);
  font-size: 1.3rem;
  line-height: 1;
}

.collab-close:hover {
  background: var(--paper);
  color: var(--ink);
}

.collab-body {
  display: flex;
  flex-direction: column;
  gap: 14px;
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-gutter: stable;
  scrollbar-width: thin;
  scrollbar-color: var(--line) transparent;
  padding-right: 2px;
}

.collab-body::-webkit-scrollbar {
  width: 8px;
}

.collab-body::-webkit-scrollbar-track {
  background: transparent;
}

.collab-body::-webkit-scrollbar-thumb {
  background: var(--line);
  border-radius: 4px;
}

.collab-body::-webkit-scrollbar-thumb:hover {
  background: var(--ink-muted);
}

.collab-status-banner {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--ink);
}

.collab-status-banner.is-connected {
  background: #ecfdf5;
  border-color: #a7f3d0;
  color: #065f46;
}

.collab-section {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.collab-label {
  font-size: 0.74rem;
  font-weight: 650;
  color: var(--ink-muted);
}

.collab-input-group {
  display: flex;
  align-items: center;
  gap: 6px;
}

.collab-input {
  flex: 1;
  height: 32px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--paper);
  color: var(--ink);
  font: inherit;
  font-size: 0.82rem;
  outline: none;
  transition: border-color 0.15s;
}

.collab-input:focus {
  border-color: var(--accent);
  background: var(--surface);
  box-shadow: 0 0 0 2px var(--accent-soft);
}

.collab-user-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.collab-color-swatches {
  display: flex;
  align-items: center;
  gap: 6px;
}

.collab-swatch {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.12s, border-color 0.12s;
}

.collab-swatch:hover {
  transform: scale(1.15);
}

.collab-swatch[aria-checked="true"] {
  border-color: #0f172a;
  box-shadow: 0 0 0 2px #ffffff;
}

.collab-share-section {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
}

.collab-links-grid {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.collab-link-card {
  display: flex;
  flex-direction: column;
  gap: 4px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
}

.collab-link-header {
  display: flex;
  align-items: center;
  gap: 8px;
}

.collab-role-badge {
  font-size: 0.68rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.collab-role-badge.is-owner {
  background: #fef3c7;
  color: #b45309;
}

.collab-role-badge.is-editor {
  background: #ecfdf5;
  color: #065f46;
}

.collab-role-badge.is-viewer {
  background: #e0f2fe;
  color: #0369a1;
}

.collab-link-desc {
  font-size: 0.72rem;
  color: var(--ink-muted);
}

.collab-link-input-wrap {
  display: flex;
  align-items: center;
  gap: 6px;
}

.collab-link-input {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.72rem;
  color: var(--ink-muted);
  background: var(--paper);
}

.collab-select {
  height: 32px;
  padding: 0 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--paper);
  color: var(--ink);
  font: inherit;
  font-size: 0.8rem;
  outline: none;
  cursor: pointer;
}

.collab-select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-soft);
}

.collab-role-select {
  height: 24px;
  padding: 0 4px;
  font-size: 0.7rem;
  border-radius: 4px;
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink);
  cursor: pointer;
}

.collab-kick-btn {
  width: 22px;
  height: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  border: 1px solid var(--line);
  background: transparent;
  color: #ef4444;
  font-size: 1rem;
  line-height: 1;
  cursor: pointer;
  margin-left: 4px;
  transition: background-color 0.12s, color 0.12s;
}

.collab-kick-btn:hover {
  background: #fee2e2;
  color: #dc2626;
  border-color: #fca5a5;
}

.app.is-viewer-mode .ribbon-panels {
  opacity: 0.65;
  pointer-events: none;
}

.app.is-viewer-mode .ribbon-tabs button:not(#tab-view):not(#tab-help) {
  opacity: 0.5;
}

.collab-participants-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.collab-count-badge {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--ink-muted);
}

.collab-participants-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 140px;
  overflow-y: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--paper);
  padding: 6px;
}

.collab-participant-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 8px;
  border-radius: 4px;
  background: var(--surface);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--ink);
}

.collab-participant-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  flex-shrink: 0;
}

.collab-participant-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.collab-participant-you {
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 1px 5px;
  border-radius: 3px;
  text-transform: uppercase;
}

.collab-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 10px;
  border-top: 1px solid var(--line);
  flex-shrink: 0;
}

.collab-footer-right {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

/* Shortcuts & Help Dialog */
.shortcuts-card {
  max-width: 680px;
  width: 95vw;
  max-height: 88vh;
  display: flex;
  flex-direction: column;
}

.shortcuts-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: 16px 20px 12px;
  border-bottom: 1px solid var(--border-subtle);
}

.shortcuts-head-text {
  flex: 1;
}

.shortcuts-title {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
}

.shortcuts-subtitle {
  margin: 4px 0 0;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.shortcuts-close {
  background: transparent;
  border: none;
  font-size: 1.4rem;
  line-height: 1;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 4px;
  border-radius: var(--radius-sm);
}

.shortcuts-close:hover {
  color: var(--text-primary);
  background: var(--bg-hover);
}

.shortcuts-tabs {
  display: flex;
  gap: 6px;
  padding: 10px 20px;
  border-bottom: 1px solid var(--border-subtle);
  background: var(--bg-subtle, #f8fafc);
}

.shortcuts-tab-btn {
  padding: 6px 14px;
  font-size: 0.82rem;
  font-weight: 600;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s ease;
}

.shortcuts-tab-btn:hover {
  color: var(--text-primary);
  background: var(--bg-surface);
}

.shortcuts-tab-btn.is-active {
  background: var(--bg-surface);
  color: var(--accent);
  border-color: var(--border-subtle);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.shortcuts-body {
  padding: 16px 20px;
  overflow-y: auto;
  flex: 1;
}

.shortcuts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
}

.shortcuts-section h3 {
  margin: 0 0 10px;
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent);
}

.shortcut-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 4px 0;
  font-size: 0.82rem;
  border-bottom: 1px solid var(--border-subtle);
}

.shortcut-row span {
  color: var(--text-secondary);
}

.shortcut-row kbd {
  display: inline-block;
  padding: 2px 6px;
  font-size: 0.75rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  background: var(--bg-subtle, #f1f5f9);
  border: 1px solid var(--border-subtle, #cbd5e1);
  border-radius: 4px;
  box-shadow: 0 1px 1px rgba(0, 0, 0, 0.06);
  color: var(--text-primary);
}

.guide-content h3 {
  margin: 0 0 12px;
  font-size: 0.95rem;
  color: var(--text-primary);
}

.guide-content p {
  margin: 0 0 12px;
  font-size: 0.85rem;
  line-height: 1.5;
  color: var(--text-secondary);
}

.about-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.about-brand-text h3 {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
}

.about-version {
  font-size: 0.78rem;
  color: var(--accent);
  font-weight: 600;
}

.about-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.about-badge {
  display: inline-block;
  padding: 4px 10px;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 9999px;
  background: var(--accent-light, #e6fffa);
  color: var(--accent, #0f766e);
  border: 1px solid var(--accent, #0f766e);
}

.shortcuts-footer {
  padding: 12px 20px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  justify-content: flex-end;
}

/* Mobile & Tablet Responsive Polish */
@media (max-width: 640px) {
  .menubar-right .menubar-btn span:not(.collab-status-dot) {
    display: none;
  }

  .board-title-input {
    max-width: 100px;
  }

  .dialog-card {
    padding: 16px;
    width: calc(100vw - 20px) !important;
    max-height: min(90vh, calc(100dvh - 24px));
  }

  .collab-user-row {
    flex-wrap: wrap;
  }

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

  .ribbon-panels {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .ribbon-panel {
    min-width: max-content;
  }
}

@media (pointer: coarse) {
  .ribbon-btn {
    width: 40px;
    height: 40px;
  }

  .swatch {
    width: 20px;
    height: 20px;
  }

  .dialog-close,
  .shortcuts-close,
  .collab-close {
    min-width: 36px;
    min-height: 36px;
    display: inline-grid;
    place-items: center;
  }
}

/* Accessibility Focus Rings & Keyboard Navigation */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .ribbon-btn {
    transition: none;
  }
}