:root {
  --font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", "SF Mono", Menlo, Monaco, Consolas, monospace;
  --color-bg: #f4f6f9;
  --color-bg-top: #f8fafc;
  --color-surface: #ffffff;
  --color-surface-muted: #f7f9fc;
  --color-surface-hover: #eef3fa;
  --color-text: #1e293b;
  --color-text-muted: #64748b;
  --color-accent: #1665d8;
  --color-accent-soft: rgba(22, 101, 216, 0.14);
  --color-danger: #b42318;
  --color-border: #d6dce7;
  --color-border-strong: #bfccdc;
  --focus-ring: 0 0 0 2px rgba(22, 101, 216, 0.22);
  --shadow-overlay: 0 14px 34px rgba(15, 23, 42, 0.14);
  --inspector-bg: color-mix(in srgb, var(--color-surface) 90%, transparent);
  --inspector-menu-bg: color-mix(in srgb, var(--color-surface) 98%, transparent);
  --inspector-border: color-mix(in srgb, var(--color-border) 84%, transparent);
  --inspector-separator: color-mix(in srgb, var(--color-border) 74%, transparent);
  --inspector-hover: color-mix(in srgb, var(--color-accent-soft) 76%, transparent);
  --inspector-danger-bg: color-mix(in srgb, var(--color-danger) 14%, transparent);
  --radius: 8px;
  --control: 34px;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  color-scheme: light;
}

:root[data-theme="dark"] {
  --color-bg: #0b0d10;
  --color-bg-top: #0b0d10;
  --color-surface: #121417;
  --color-surface-muted: #1a1d22;
  --color-surface-hover: #23272e;
  --color-text: #e2e8f0;
  --color-text-muted: #94a3b8;
  --color-accent: #60a5fa;
  --color-accent-soft: rgba(96, 165, 250, 0.22);
  --color-danger: #f87171;
  --color-border: #2b3038;
  --color-border-strong: #3a414d;
  --focus-ring: 0 0 0 2px rgba(96, 165, 250, 0.34);
  --shadow-overlay: 0 20px 40px rgba(2, 6, 23, 0.45);
  --inspector-bg: color-mix(in srgb, var(--color-surface) 92%, transparent);
  --inspector-menu-bg: color-mix(in srgb, var(--color-surface-muted) 96%, transparent);
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-family);
  color: var(--color-text);
  background: linear-gradient(180deg, var(--color-bg-top), var(--color-bg));
  user-select: none;
  -webkit-user-select: none;
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

input,
textarea {
  user-select: text;
  -webkit-user-select: text;
}

button {
  cursor: pointer;
}

h2 {
  margin: 0;
  font-size: 16px;
  font-weight: 650;
}

.icon-sprite {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.icon {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  flex: none;
  pointer-events: none;
}

.app-shell {
  position: relative;
  width: 100vw;
  height: 100vh;
  height: 100dvh;
}

.top-bar,
.tool-dock,
.zoom-cluster,
.context-toolbar,
.floating-menu,
.toast {
  position: fixed;
  z-index: 20;
}

.top-bar {
  top: calc(var(--safe-top) + 12px);
  left: 50%;
  width: min(1120px, calc(100vw - 24px));
  min-height: 46px;
  opacity: 0;
  transform: translate(-50%, -8px);
  transition:
    opacity 140ms ease,
    background 140ms ease,
    transform 140ms ease;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 6px;
  border: 1px solid color-mix(in srgb, var(--color-border) 82%, transparent);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--color-surface) 88%, transparent);
  box-shadow: var(--shadow-overlay);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.top-bar::before {
  position: absolute;
  inset: -18px 0 -14px;
  z-index: -1;
  content: "";
}

.top-bar:hover,
.top-bar:focus-within {
  opacity: 1;
  transform: translate(-50%, 0);
}

.brand-cluster,
.action-cluster,
.dialog-head,
.zoom-cluster,
.context-toolbar,
.selection-chip,
.color-group,
.font-size-control,
.line-style-control,
.route-control,
.context-actions {
  display: flex;
  align-items: center;
}

.brand-cluster {
  min-width: 0;
  flex: 1;
  gap: 10px;
}

.brand-name {
  flex: none;
  padding-left: 8px;
  font-size: 13px;
  font-weight: 650;
}

.board-title-input {
  width: min(360px, 42vw);
  min-width: 120px;
  height: 32px;
  padding: 0 10px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  background: transparent;
  font-size: 14px;
  font-weight: 600;
}

.board-title-input:hover,
.board-title-input:focus {
  border-color: var(--color-border);
  background: var(--color-surface-muted);
}

.persistence-status {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: none;
  min-width: 54px;
  height: 32px;
  padding: 0 10px;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  color: var(--color-text-muted);
  background: color-mix(in srgb, var(--color-surface-muted) 82%, transparent);
  font-size: 11px;
  font-weight: 650;
  line-height: 1;
  text-align: center;
}

.persistence-status[data-status="saved"] {
  color: var(--color-accent);
  border-color: color-mix(in srgb, var(--color-accent) 34%, var(--color-border));
  background: color-mix(in srgb, var(--color-accent-soft) 52%, transparent);
}

.persistence-status[data-status="error"] {
  color: var(--color-danger);
  border-color: color-mix(in srgb, var(--color-danger) 34%, var(--color-border));
  background: color-mix(in srgb, var(--color-danger) 12%, transparent);
}

.action-cluster {
  flex: none;
  gap: 5px;
}

.action-cluster,
.tool-dock {
  scrollbar-width: none;
}

.action-cluster::-webkit-scrollbar,
.tool-dock::-webkit-scrollbar {
  display: none;
}

.button,
.tool-button,
.shape-option {
  height: var(--control);
  min-width: var(--control);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 0 10px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  color: var(--color-text);
}

.icon-button {
  width: var(--control);
  padding: 0;
}

.button:hover,
.tool-button:hover,
.shape-option:hover,
.button.is-active,
.tool-button.is-active,
.shape-option.is-active {
  border-color: var(--color-border-strong);
  background: var(--color-accent-soft);
  color: var(--color-accent);
}

.button:disabled {
  cursor: default;
  opacity: 0.48;
}

.danger-button:hover {
  color: var(--color-danger);
  border-color: color-mix(in srgb, var(--color-danger) 42%, var(--color-border));
}

.canvas-stage {
  position: absolute;
  inset: 0;
  background-color: var(--color-bg);
  background-image: radial-gradient(
    circle,
    color-mix(in srgb, var(--color-text-muted) 36%, transparent) 1px,
    transparent 1px
  );
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
}

.canvas-stage[data-grid="hidden"] {
  background-image: none;
}

.canvas-stage.is-panning,
.canvas-stage[data-tool="hand"] {
  cursor: grab;
}

.canvas-stage.is-dragging,
.canvas-stage.is-panning:active {
  cursor: grabbing;
}

.canvas-stage[data-tool="draw"] {
  cursor: crosshair;
}

.canvas-svg {
  width: 100%;
  height: 100%;
  display: block;
  user-select: none;
  -webkit-user-select: none;
}

.diagram-element {
  cursor: default;
}

.element-outline {
  display: none;
  pointer-events: none;
  fill: none;
  stroke: var(--color-accent);
  stroke-width: 1.5;
  stroke-dasharray: 5 4;
  vector-effect: non-scaling-stroke;
}

.line-selection-path {
  pointer-events: none;
  fill: none;
  stroke: var(--color-accent);
  stroke-width: 8;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: 0.28;
  vector-effect: non-scaling-stroke;
}

.line-selection-core {
  pointer-events: none;
  fill: none;
  stroke: var(--color-accent);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: 0.95;
  vector-effect: non-scaling-stroke;
}

.arrow-hit-path {
  fill: none;
  stroke: transparent;
  stroke-width: 18;
  stroke-linecap: round;
  stroke-linejoin: round;
  pointer-events: stroke;
  vector-effect: non-scaling-stroke;
}

.diagram-element.is-selected .element-outline {
  display: block;
}

.resize-handle,
.arrow-handle {
  fill: var(--color-surface);
  stroke: var(--color-accent);
  stroke-width: 1.6;
  vector-effect: non-scaling-stroke;
  cursor: nwse-resize;
}

.arrow-handle {
  cursor: grab;
}

.lock-badge {
  pointer-events: none;
}

.lock-badge rect {
  fill: var(--color-surface);
  stroke: var(--color-accent);
  stroke-width: 1.4;
  filter: url(#soft-shadow);
  vector-effect: non-scaling-stroke;
}

.lock-badge use {
  color: var(--color-accent);
  fill: none;
  stroke: currentColor;
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.selection-marquee {
  fill: rgba(22, 101, 216, 0.08);
  stroke: var(--color-accent);
  stroke-width: 1.4;
  stroke-dasharray: 6 4;
  vector-effect: non-scaling-stroke;
}

.connection-hint {
  fill: var(--color-surface);
  stroke: var(--color-accent);
  stroke-width: 2;
  vector-effect: non-scaling-stroke;
}

.connection-target {
  fill: rgba(22, 101, 216, 0.08);
  stroke: var(--color-accent);
  stroke-width: 1.5;
  stroke-dasharray: 5 4;
  vector-effect: non-scaling-stroke;
}

.element-text {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px;
  color: var(--element-text-color);
  font-size: var(--element-font-size);
  font-weight: var(--element-font-weight);
  font-style: var(--element-font-style);
  line-height: 1.22;
  text-align: center;
  overflow: hidden;
  overflow-wrap: anywhere;
  pointer-events: none;
  user-select: none;
  -webkit-user-select: none;
}

.element-text-content {
  display: -webkit-box;
  max-width: 100%;
  min-width: 0;
  overflow: hidden;
  overflow-wrap: anywhere;
  white-space: pre-wrap;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: var(--element-line-clamp);
  line-clamp: var(--element-line-clamp);
  user-select: none;
  -webkit-user-select: none;
}

.element-text.is-free-text {
  justify-content: flex-start;
  align-items: flex-start;
  padding: 0;
  font-weight: 650;
  text-align: left;
}

:root[data-theme="dark"] .element-text.is-free-text.is-bare-text {
  color: #f8fafc;
}

.element-text.is-comment {
  justify-content: flex-start;
  align-items: flex-start;
  padding: 0;
  font-size: var(--element-font-size);
  text-align: left;
}

.element-text.is-arrow-label {
  padding: 4px;
  text-align: center;
}

.arrow-label-text-backdrop {
  box-sizing: border-box;
  padding: 2px 6px;
  border-radius: 6px;
  background: var(--arrow-label-backdrop);
}

.arrow-label-hitbox {
  cursor: grab;
  pointer-events: all;
}

.arrow-label-hitbox.is-selected-arrow-label {
  stroke: var(--color-accent);
  stroke-width: 1.5;
  stroke-dasharray: 4 4;
  vector-effect: non-scaling-stroke;
}

.tool-dock {
  left: 50%;
  bottom: calc(var(--safe-bottom) + 18px);
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 6px;
  border: 1px solid color-mix(in srgb, var(--color-border) 82%, transparent);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--color-surface) 90%, transparent);
  box-shadow: var(--shadow-overlay);
  backdrop-filter: blur(18px);
}

.dock-separator {
  width: 1px;
  height: 22px;
  margin: 0 3px;
  background: var(--color-border);
}

.shape-selector {
  position: relative;
}

.shape-trigger {
  list-style: none;
}

.shape-trigger::-webkit-details-marker {
  display: none;
}

.shape-trigger .chevron-icon {
  width: 12px;
  height: 12px;
}

.shape-menu {
  position: absolute;
  left: 50%;
  bottom: calc(100% + 10px);
  transform: translateX(-50%);
  display: grid;
  grid-template-columns: repeat(4, var(--control));
  gap: 6px;
  padding: 8px;
  border: 1px solid color-mix(in srgb, var(--color-border) 82%, transparent);
  border-radius: 18px;
  background: color-mix(in srgb, var(--color-surface) 94%, transparent);
  box-shadow: var(--shadow-overlay);
  backdrop-filter: blur(18px);
}

.shape-selector:not([open]) .shape-menu {
  display: none;
}

.zoom-cluster {
  right: 16px;
  bottom: calc(var(--safe-bottom) + 18px);
  gap: 5px;
  padding: 6px;
  border: 1px solid color-mix(in srgb, var(--color-border) 82%, transparent);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--color-surface) 90%, transparent);
  box-shadow: var(--shadow-overlay);
  backdrop-filter: blur(18px);
}

.zoom-separator {
  width: 1px;
  height: 22px;
  margin: 0 2px;
  background: var(--color-border);
}

.zoom-readout {
  width: 62px;
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  font-weight: 650;
}

.context-toolbar {
  top: 70px;
  left: 50%;
  width: max-content;
  max-width: calc(100vw - 32px);
  transform: translateX(-50%);
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0;
  min-height: 46px;
  padding: 4px;
  border: 1px solid var(--inspector-border);
  border-radius: 999px;
  background: var(--inspector-bg);
  box-shadow: var(--shadow-overlay);
  backdrop-filter: blur(18px);
  color: var(--color-text);
  overflow: visible;
  pointer-events: auto;
}

.context-toolbar[hidden] {
  display: none;
}

.text-edit-button {
  font-weight: 800;
}

.context-separator {
  width: 1px;
  height: 32px;
  margin: 0 4px;
  background: var(--inspector-separator);
}

.color-group,
.font-size-control,
.line-style-options,
.arrow-head-options,
.arrange-menu {
  flex: none;
  gap: 7px;
}

.color-group,
.font-size-control,
.line-style-options,
.arrow-head-options,
.arrange-menu {
  min-height: var(--control);
  padding: 0;
  border: 0;
  background: transparent;
  box-shadow: none;
  backdrop-filter: none;
}

.context-toolbar .button,
.inspector-trigger {
  height: 38px;
  min-width: 38px;
  border-color: transparent;
  border-radius: 999px;
  background: transparent;
  color: var(--color-text);
}

.context-toolbar .button:hover,
.context-toolbar .button.is-active,
.inspector-menu-group[open] > .inspector-trigger,
.inspector-trigger:hover {
  background: var(--inspector-hover);
  color: var(--color-accent);
}

.context-toolbar .danger-button:hover {
  background: var(--inspector-danger-bg);
  color: var(--color-danger);
}

.inspector-menu-group {
  position: relative;
  display: flex;
  align-items: center;
}

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

.inspector-menu-group > summary {
  list-style: none;
}

.inspector-menu-group > summary::-webkit-details-marker {
  display: none;
}

.inspector-trigger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 0 9px;
  cursor: pointer;
  user-select: none;
}

.chevron-icon {
  width: 11px;
  height: 11px;
  stroke-width: 2.4;
  opacity: 0.82;
}

.inspector-menu {
  position: absolute;
  z-index: 40;
  top: calc(100% + 10px);
  left: 0;
  display: flex;
  align-items: center;
  gap: 10px;
  width: max-content;
  max-width: calc(100vw - 32px);
  padding: 8px;
  border: 1px solid var(--inspector-border);
  border-radius: 20px;
  background: var(--inspector-menu-bg);
  box-shadow: var(--shadow-overlay);
  color: var(--color-text);
  backdrop-filter: blur(18px);
}

.arrange-control .inspector-menu,
.text-style-control .inspector-menu {
  right: 0;
  left: auto;
}

.text-style-menu {
  flex-wrap: wrap;
}

.text-format-group {
  display: flex;
  gap: 4px;
  padding-right: 2px;
}

.text-format-button {
  font-size: 14px;
  line-height: 1;
}

.text-format-button.is-active {
  color: var(--color-accent);
}

.current-swatch,
.current-line-swatch {
  width: 20px;
  height: 20px;
  border: 2px solid color-mix(in srgb, var(--color-border) 70%, var(--color-surface));
  border-radius: 999px;
  background: var(--swatch, #dbeafe);
}

.current-line-swatch {
  border: 3px solid var(--swatch, #dbeafe);
  background: var(--color-surface);
  border-radius: 999px;
}

.current-swatch.is-transparent {
  background:
    linear-gradient(135deg, transparent 0 44%, #f43f5e 44% 56%, transparent 56%),
    var(--color-surface);
}

.current-line-preview.is-transparent {
  border-top-color: #cbd5e1;
}

.current-line-swatch.is-transparent {
  border-color: #cbd5e1;
  background:
    linear-gradient(135deg, transparent 0 44%, #f43f5e 44% 56%, transparent 56%),
    var(--color-surface);
}

.text-trigger {
  min-width: 96px;
  justify-content: space-between;
}

.text-trigger-label {
  font-size: 18px;
  line-height: 1;
}

.font-size-readout {
  min-width: 22px;
  font-size: 13px;
  font-weight: 750;
  font-variant-numeric: tabular-nums;
}

.export-menu {
  display: grid;
  gap: 6px;
  padding: 6px;
  border: 1px solid color-mix(in srgb, var(--color-border) 76%, transparent);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--color-surface) 94%, transparent);
  box-shadow: var(--shadow-overlay);
  backdrop-filter: blur(18px);
}

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

.menu-button {
  min-width: 74px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  padding: 0 10px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  background: transparent;
  color: var(--color-text);
  text-align: left;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0;
}

.menu-button:hover {
  border-color: var(--color-border);
  background: var(--color-accent-soft);
  color: var(--color-accent);
}

.color-group-icon {
  width: 22px;
  height: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 13px;
  font-weight: 800;
}

.fill-icon,
.stroke-icon {
  border: 2px solid currentColor;
  border-radius: var(--radius);
}

.fill-icon {
  background: linear-gradient(135deg, #fde68a 0 50%, #dbeafe 50%);
}

.stroke-icon {
  background: transparent;
}

.text-color-icon {
  border-bottom: 3px solid currentColor;
  line-height: 1;
}

.font-size-input {
  width: 64px;
  height: var(--control);
  padding: 0 4px;
  border: 1px solid var(--inspector-border);
  border-radius: var(--radius);
  background: var(--color-surface-muted);
  color: var(--color-text);
  text-align: center;
  font-size: 12px;
  font-weight: 700;
}

.line-style-button {
  width: 42px;
  padding: 0 8px;
}

.arrow-head-button {
  width: 42px;
  padding: 0 8px;
}

.arrow-head-icon {
  width: 21px;
  height: 21px;
}

.line-style-preview {
  width: 24px;
  height: 0;
  border-top: 3px solid currentColor;
  border-radius: 999px;
}

.current-line-preview {
  border-top-color: var(--swatch, currentColor);
}

.dashed-preview {
  border-top-style: dashed;
}

.swatch {
  width: 26px;
  height: 26px;
  flex: none;
  padding: 0;
  border: 1px solid var(--inspector-border);
  border-radius: var(--radius);
  background: var(--swatch);
}

.stroke-swatch {
  background:
    linear-gradient(var(--swatch), var(--swatch)) center / 18px 3px no-repeat,
    #ffffff;
}

.no-fill-swatch {
  position: relative;
  background: linear-gradient(135deg, transparent 0 44%, #ef4444 44% 56%, transparent 56%), #ffffff;
}

.text-swatch {
  position: relative;
  background: #ffffff;
}

.text-swatch::after {
  position: absolute;
  left: 6px;
  right: 6px;
  bottom: 5px;
  height: 4px;
  border-radius: 999px;
  background: var(--swatch);
  content: "";
}

.swatch:hover {
  border-color: var(--color-border-strong);
  box-shadow: var(--focus-ring);
}

.swatch.is-active {
  border-color: color-mix(in srgb, var(--color-accent) 64%, var(--color-border));
  box-shadow: var(--focus-ring);
}

.line-style-button.is-active {
  border-color: color-mix(in srgb, var(--color-accent) 64%, var(--color-border));
  background: var(--color-accent-soft);
  color: var(--color-accent);
  box-shadow: var(--focus-ring);
}

.arrow-head-button.is-active {
  border-color: color-mix(in srgb, var(--color-accent) 64%, var(--color-border));
  background: var(--color-accent-soft);
  color: var(--color-accent);
  box-shadow: var(--focus-ring);
}

.custom-color {
  width: 26px;
  height: 26px;
  position: relative;
  display: inline-flex;
  overflow: hidden;
  border: 1px solid var(--inspector-border);
  border-radius: var(--radius);
  background:
    linear-gradient(45deg, transparent 0 46%, currentColor 46% 54%, transparent 54%),
    conic-gradient(#ef4444, #f59e0b, #10b981, #3b82f6, #8b5cf6, #ef4444);
  color: var(--color-text-muted);
  cursor: pointer;
}

.custom-color input {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

.inline-editor {
  position: fixed;
  z-index: 40;
  display: none;
  padding: 10px;
  border: 2px solid transparent;
  border-radius: var(--radius);
  background: transparent;
  color: var(--color-text);
  box-shadow: none;
  outline: none;
  caret-color: currentColor;
  line-height: 1.25;
  pointer-events: auto;
  resize: none;
  touch-action: auto;
  user-select: text;
  -webkit-user-select: text;
}

.inline-editor.is-open {
  display: block;
}

.side-dialog {
  width: min(360px, calc(100vw - 24px));
  max-height: calc(100vh - 36px);
  margin: 18px 18px 18px auto;
  padding: 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  color: var(--color-text);
  box-shadow: var(--shadow-overlay);
}

.side-dialog::backdrop {
  background: rgba(15, 23, 42, 0.18);
}

.dialog-head {
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.board-list {
  display: grid;
  gap: 8px;
}

.board-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
  padding: 8px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface-muted);
}

.board-row[data-active="true"] {
  border-color: color-mix(in srgb, var(--color-accent) 44%, var(--color-border));
  background: var(--color-accent-soft);
}

.board-open {
  min-width: 0;
  border: 0;
  background: transparent;
  text-align: left;
}

.board-name {
  display: block;
  overflow: hidden;
  color: var(--color-text);
  font-size: 13px;
  font-weight: 700;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.board-meta {
  display: block;
  margin-top: 3px;
  color: var(--color-text-muted);
  font-size: 11px;
}

.board-actions {
  display: flex;
  gap: 4px;
}

.command-dialog {
  width: min(620px, calc(100vw - 28px));
  margin: 10vh auto auto;
  padding: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  color: var(--color-text);
  box-shadow: var(--shadow-overlay);
  font-family: var(--font-family);
  font-size: 16px;
  line-height: normal;
}

.command-dialog[open] {
  display: grid;
  grid-template-rows: auto auto auto;
  align-content: start;
}

.command-dialog::backdrop {
  background: rgba(15, 23, 42, 0.24);
}

.command-head {
  display: grid;
  gap: 8px;
  padding: 12px;
  border-bottom: 1px solid var(--color-border);
}

.command-head label {
  color: var(--color-text-muted);
  font-size: 11px;
  font-weight: 400;
  line-height: normal;
}

.command-input {
  width: 100%;
  height: 42px;
  min-height: 0;
  padding: 0 10px;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: var(--color-text);
  font-size: 22px;
  font-weight: 400;
  line-height: normal;
  outline: none;
  box-shadow: none;
}

.command-input:focus,
.command-input:focus-visible {
  outline: none;
  box-shadow: none;
}

.command-input::placeholder {
  color: var(--color-text-muted);
  opacity: 0.74;
}

.command-list {
  display: grid;
  align-content: start;
  gap: 4px;
  height: min(380px, calc(100vh - 220px));
  max-height: min(380px, calc(100vh - 220px));
  overflow: auto;
  padding: 8px;
}

.command-list[data-size="single"] {
  height: 96px;
  padding-block: 16px;
}

.command-list[data-size="empty"] {
  height: auto;
  min-height: 68px;
}

.command-item {
  width: 100%;
  min-height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 10px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  background: transparent;
  color: var(--color-text);
  font-weight: 400;
  line-height: normal;
  text-align: left;
}

.command-item:hover,
.command-item[data-active="true"] {
  border-color: var(--color-border-strong);
  background: var(--color-accent-soft);
}

.command-item-text {
  min-width: 0;
  display: grid;
  gap: 3px;
  line-height: normal;
}

.command-item strong,
.command-item small {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.command-item strong {
  font-size: 16px;
  font-weight: 400;
  line-height: normal;
}

.command-item small {
  color: var(--color-text-muted);
  font-size: 12px;
  font-weight: 400;
  line-height: normal;
}

.command-item kbd {
  display: block;
  min-height: auto;
  flex: none;
  padding: 3px 6px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background: transparent;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  line-height: normal;
}

.command-empty {
  padding: 18px 10px;
  color: var(--color-text-muted);
  font-size: 13px;
  text-align: center;
}

.command-foot {
  padding: 8px 12px 12px;
  border-top: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 11px;
  line-height: normal;
}

.toast {
  left: 50%;
  bottom: calc(var(--safe-bottom) + 76px);
  transform: translateX(-50%);
  max-width: min(460px, calc(100vw - 32px));
  padding: 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  box-shadow: var(--shadow-overlay);
  color: var(--color-text);
  font-size: 13px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 140ms ease;
}

.toast.is-visible {
  opacity: 1;
}

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

button:focus-visible,
input:focus-visible,
textarea:focus-visible:not(.inline-editor),
.shape-trigger:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

button[hidden],
input[hidden],
textarea[hidden],
.context-separator[hidden],
.selection-chip[hidden],
.arrow-head-control[hidden],
.fill-control[hidden],
.line-style-control[hidden],
.context-toolbar[hidden],
.persistence-status[hidden],
.route-control[hidden],
.stroke-control[hidden],
.export-menu[hidden] {
  display: none;
}

@media (hover: none), (pointer: coarse) {
  :root {
    --control: 44px;
  }

  .top-bar {
    opacity: 1;
    transform: translate(-50%, 0);
  }

  .button,
  .tool-button,
  .shape-option {
    padding: 0 12px;
  }

  .icon {
    width: 18px;
    height: 18px;
  }

  .tool-dock,
  .zoom-cluster {
    gap: 6px;
    padding: 8px;
  }

  .context-toolbar .button,
  .inspector-trigger {
    height: 44px;
    min-width: 44px;
  }

  .shape-menu {
    gap: 8px;
    padding: 10px;
  }

  .swatch,
  .custom-color {
    width: 34px;
    height: 34px;
  }

  .arrow-hit-path {
    stroke-width: 24;
  }
}

@media (max-width: 760px) {
  .top-bar {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 8px;
    width: calc(100vw - 20px);
    overflow: visible;
    opacity: 1;
    transform: translate(-50%, 0);
  }

  .brand-cluster {
    min-width: 0;
    gap: 6px;
  }

  .brand-name {
    min-width: 0;
    padding-left: 6px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .board-title-input {
    width: clamp(76px, 24vw, 150px);
    min-width: 0;
    padding: 0 8px;
  }

  .action-cluster {
    flex: none;
    justify-content: flex-end;
    overflow: visible;
  }

  #import-btn,
  #export-json-btn {
    display: none;
  }

  .tool-dock {
    max-width: calc(100vw - 24px);
    overflow-x: auto;
    overscroll-behavior-x: contain;
  }

  .zoom-cluster {
    right: auto;
    bottom: calc(var(--safe-bottom) + 82px);
    left: 50%;
    transform: translateX(-50%);
  }

  .shape-menu {
    bottom: calc(100% + 68px);
  }

  .context-toolbar {
    top: calc(var(--safe-top) + 66px);
    max-width: calc(100vw - 24px);
    border-radius: 999px;
    justify-content: flex-start;
  }
}

@media (max-width: 430px) {
  .board-title-input {
    display: none;
  }

  .brand-name {
    max-width: 108px;
  }
}