:root {
  --ink: #171b1f;
  --ink-soft: #2b3036;
  --paper: #f3f1eb;
  --panel: #fbfaf6;
  --white: #ffffff;
  --line: #dedbd2;
  --line-dark: #383e44;
  --muted: #7d817f;
  --accent: #eb5e35;
  --accent-dark: #c84220;
  --mint: #bfe8dd;
  --success: #218c74;
  --danger: #b73c3c;
  --shadow: 0 18px 45px rgba(29, 30, 28, 0.1);
  color-scheme: light;
  font-family: "Aptos", "Segoe UI", "Noto Sans TC", "Microsoft JhengHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background:
    radial-gradient(circle at 80% 8%, rgba(191, 232, 221, 0.46), transparent 27rem),
    var(--paper);
  overflow: hidden;
}

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

button {
  color: inherit;
}

button,
select,
input[type="color"] {
  cursor: pointer;
}

button:disabled,
input:disabled {
  cursor: not-allowed;
  opacity: 0.48;
}

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

svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.app-shell {
  display: grid;
  grid-template-columns: 286px minmax(0, 1fr);
  width: 100%;
  height: 100%;
}

.sidebar {
  display: flex;
  min-width: 0;
  flex-direction: column;
  padding: 26px 22px 18px;
  color: #f7f5ef;
  background:
    linear-gradient(150deg, rgba(255, 255, 255, 0.025), transparent 42%),
    var(--ink);
  border-right: 1px solid #090b0d;
}

.brand-block {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 4px 26px;
}

.brand-mark,
.loading-mark {
  display: grid;
  width: 40px;
  height: 40px;
  flex: 0 0 auto;
  place-items: center;
  color: var(--ink);
  background: var(--accent);
  border-radius: 7px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 25px;
  font-weight: 700;
}

.brand-name {
  font-size: 13px;
  font-weight: 750;
  letter-spacing: 0.08em;
}

.brand-subtitle {
  margin-top: 3px;
  color: #929898;
  font-size: 11px;
  letter-spacing: 0.04em;
}

.side-section {
  padding: 20px 0;
  border-top: 1px solid var(--line-dark);
}

.side-section--dancers {
  display: flex;
  min-height: 0;
  flex: 1;
  flex-direction: column;
}

.section-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  font-size: 13px;
  font-weight: 650;
}

.count-badge {
  display: inline-grid;
  min-width: 21px;
  height: 19px;
  margin-left: 5px;
  padding: 0 6px;
  place-items: center;
  color: #c9cecc;
  background: #31363b;
  border-radius: 10px;
  font-size: 10px;
}

.icon-button {
  display: inline-grid;
  width: 34px;
  height: 34px;
  padding: 0;
  place-items: center;
  color: #525653;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 6px;
  transition: 160ms ease;
}

.icon-button:hover:not(:disabled) {
  color: var(--ink);
  background: var(--white);
  border-color: #bdbab1;
}

.icon-button--light {
  color: #b9bfbd;
  border-color: #3b4146;
}

.icon-button--light:hover:not(:disabled) {
  color: #ffffff;
  background: #2a3035;
  border-color: #535a5f;
}

.icon-button--danger {
  color: var(--danger);
}

.icon-button--danger:hover:not(:disabled) {
  color: #fff;
  background: var(--danger);
  border-color: var(--danger);
}

.select-wrap {
  position: relative;
}

.select-wrap select {
  width: 100%;
  height: 42px;
  padding: 0 38px 0 12px;
  color: #f8f7f2;
  background: #262b30;
  border: 1px solid #3b4147;
  border-radius: 6px;
  outline: none;
  appearance: none;
}

.select-wrap select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(235, 94, 53, 0.16);
}

.select-chevron {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 17px;
  height: 17px;
  color: #8f9696;
  pointer-events: none;
}

.project-description {
  display: -webkit-box;
  margin: 11px 2px 0;
  overflow: hidden;
  color: #989e9d;
  font-size: 12px;
  line-height: 1.55;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.dancer-list {
  min-height: 0;
  overflow-y: auto;
  scrollbar-color: #454b4e transparent;
  scrollbar-width: thin;
}

.dancer-item {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  width: 100%;
  margin-bottom: 4px;
  padding: 9px 8px;
  color: #e4e4df;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 5px;
  text-align: left;
}

.dancer-item:hover {
  background: #22272c;
}

.dancer-item.is-selected {
  background: #2e3337;
  border-color: #485057;
}

.dancer-swatch {
  width: 29px;
  height: 29px;
  border: 2px solid rgba(255, 255, 255, 0.7);
  border-radius: 50%;
}

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

.dancer-code {
  display: block;
  font-size: 12px;
  font-weight: 750;
}

.dancer-name {
  display: block;
  overflow: hidden;
  margin-top: 2px;
  color: #8e9494;
  font-size: 11px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.dancer-position {
  color: #747b7b;
  font-family: "Cascadia Mono", Consolas, monospace;
  font-size: 9px;
}

.sidebar-footer {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 16px 4px 0;
  color: #858c8b;
  border-top: 1px solid var(--line-dark);
  font-size: 10px;
  letter-spacing: 0.04em;
}

.status-dot {
  width: 7px;
  height: 7px;
  background: #5ec5a4;
  border-radius: 50%;
  box-shadow: 0 0 0 3px rgba(94, 197, 164, 0.13);
}

.workspace {
  display: grid;
  min-width: 0;
  min-height: 0;
  height: 100vh;
  grid-template-rows: 84px minmax(0, 1fr) 168px;
  overflow: hidden;
}

.workspace-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 0 30px;
  background: rgba(251, 250, 246, 0.78);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.workspace-title {
  min-width: 0;
}

.eyebrow,
.panel-label {
  margin: 0 0 5px;
  color: #8c8d88;
  font-size: 9px;
  font-weight: 750;
  letter-spacing: 0.13em;
}

.workspace-title h1 {
  overflow: hidden;
  margin: 0;
  font-size: clamp(20px, 2vw, 28px);
  font-weight: 650;
  letter-spacing: 0;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.workspace-actions {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 9px;
}

.save-state {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-right: 6px;
  color: var(--success);
  font-size: 11px;
}

.save-state.is-saving {
  color: #9a6b15;
}

.save-state.is-error {
  color: var(--danger);
}

.save-state svg {
  width: 14px;
  height: 14px;
}

.text-button,
.primary-button,
.secondary-button,
.ghost-button,
.play-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 36px;
  padding: 0 14px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 650;
  transition: 160ms ease;
}

.text-button {
  color: #414542;
  background: transparent;
  border: 1px solid var(--line);
}

.text-button:hover {
  background: var(--white);
  border-color: #c8c4ba;
}

.text-button svg,
.secondary-button svg {
  width: 15px;
  height: 15px;
}

.primary-button {
  color: #fff;
  background: var(--accent);
  border: 1px solid var(--accent);
}

.primary-button:hover:not(:disabled) {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
}

.secondary-button {
  color: #363a37;
  background: #fff;
  border: 1px solid #d5d1c7;
}

.secondary-button:hover:not(:disabled) {
  border-color: #aaa69c;
}

.secondary-button--compact {
  min-height: 34px;
}

.ghost-button {
  color: #646762;
  background: transparent;
  border: 1px solid transparent;
}

.workspace-body {
  display: grid;
  min-width: 0;
  min-height: 0;
  grid-template-columns: minmax(0, 1fr) 286px;
  overflow: hidden;
}

.stage-panel {
  position: relative;
  display: flex;
  min-width: 0;
  min-height: 0;
  flex-direction: column;
  padding: 10px 14px 12px;
  overflow: hidden;
  border-right: 1px solid var(--line);
}

.stage-toolbar {
  position: absolute;
  z-index: 4;
  top: 12px;
  right: 14px;
  left: 14px;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin: 0;
  pointer-events: none;
}

.stage-toolbar-title {
  min-width: 0;
  padding: 7px 9px;
  background: rgba(251, 250, 246, 0.88);
  border: 1px solid rgba(190, 186, 176, 0.72);
  border-radius: 5px;
  box-shadow: 0 5px 18px rgba(28, 30, 27, 0.08);
  backdrop-filter: blur(9px);
}

.stage-toolbar h2,
.timeline-header h2 {
  margin: 0;
  font-size: 17px;
  font-weight: 650;
  letter-spacing: 0;
}

.stage-toolbar h2 {
  overflow: hidden;
  font-size: 15px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.stage-dimensions {
  flex: 0 0 auto;
  padding: 6px 9px;
  color: #777a74;
  background: #ece9e1;
  border: 1px solid #dedad0;
  border-radius: 4px;
  font-family: "Cascadia Mono", Consolas, monospace;
  font-size: 10px;
}

.stage-toolbar-controls {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 7px;
  padding: 4px;
  background: rgba(251, 250, 246, 0.88);
  border: 1px solid rgba(190, 186, 176, 0.72);
  border-radius: 6px;
  box-shadow: 0 5px 18px rgba(28, 30, 27, 0.08);
  backdrop-filter: blur(9px);
  pointer-events: auto;
}

.view-toggle {
  width: 31px;
  height: 31px;
  color: #777b76;
  background: rgba(255, 255, 255, 0.55);
}

.view-toggle svg {
  width: 15px;
  height: 15px;
}

.view-toggle.is-active {
  color: #fff;
  background: var(--ink);
  border-color: var(--ink);
}

.canvas-stage-area {
  position: relative;
  display: flex;
  width: 100%;
  max-width: 100%;
  min-height: 0;
  flex: 1 1 0;
  align-items: flex-start;
  justify-content: flex-start;
  overflow: auto;
  overscroll-behavior: contain;
  scrollbar-color: #a9a59b transparent;
  scrollbar-gutter: stable;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.canvas-stage-area::-webkit-scrollbar {
  width: 11px;
  height: 11px;
}

.canvas-stage-area::-webkit-scrollbar-track {
  background: rgba(222, 219, 210, 0.45);
  border-radius: 8px;
}

.canvas-stage-area::-webkit-scrollbar-thumb {
  background: #aaa69d;
  border: 2px solid transparent;
  border-radius: 8px;
  background-clip: content-box;
}

.canvas-stage-area::-webkit-scrollbar-thumb:hover {
  background: #807d76;
  border: 2px solid transparent;
  background-clip: content-box;
}

.canvas-stage-area.is-panning {
  cursor: grabbing;
}

.canvas-frame {
  position: relative;
  width: 100%;
  max-width: none;
  min-height: 180px;
  height: min(620px, 96%);
  max-height: none;
  flex: 0 0 auto;
  margin: auto;
  overflow: hidden;
  background: #e9e6de;
  border: 1px solid #d6d1c6;
  border-radius: 7px;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.35);
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
  transition: background-color 180ms ease, border-color 180ms ease;
}

.canvas-frame.is-dark {
  background: #11181c;
  border-color: #344147;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.035);
}

.canvas-frame.is-resizing {
  user-select: none;
  transition: none;
}

#stageCanvas {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
}

.canvas-corner-label,
.audience-label {
  position: absolute;
  color: #9a9992;
  font-size: 8px;
  font-weight: 750;
  letter-spacing: 0.16em;
  pointer-events: none;
}

.canvas-corner-label {
  top: 62px;
  left: 17px;
}

.audience-label {
  right: 18px;
  bottom: 62px;
}

.canvas-frame.is-dark .canvas-corner-label,
.canvas-frame.is-dark .audience-label {
  color: #8fa0a5;
}

.stage-panel.is-dark .stage-toolbar-title,
.stage-panel.is-dark .stage-toolbar-controls {
  color: #eef2f0;
  background: rgba(23, 31, 34, 0.88);
  border-color: rgba(87, 103, 107, 0.8);
}

.stage-panel.is-dark .stage-toolbar .panel-label {
  color: #8fa0a5;
}

.stage-panel.is-dark .stage-toolbar h2 {
  color: #f7f7f3;
}

.stage-panel.is-dark .stage-dimensions {
  color: #c1cac9;
  background: #2a3539;
  border-color: #46555a;
}

.stage-panel.is-dark .view-toggle:not(.is-active) {
  color: #c4cdcb;
  background: #263136;
  border-color: #45545a;
}

.stage-resize-handle {
  position: absolute;
  z-index: 5;
  right: 7px;
  bottom: 7px;
  display: grid;
  width: 27px;
  height: 27px;
  padding: 0;
  place-items: center;
  color: #737773;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(120, 121, 115, 0.32);
  border-radius: 4px;
  cursor: nwse-resize;
  touch-action: none;
  transition: 150ms ease;
}

.stage-resize-handle:hover {
  color: var(--ink);
  background: #fff;
  border-color: #aaa69c;
}

.stage-resize-handle svg {
  width: 13px;
  height: 13px;
}

.canvas-frame.is-dark .stage-resize-handle {
  color: #b7c0c2;
  background: rgba(32, 42, 46, 0.88);
  border-color: #45555b;
}

.canvas-frame.is-dark .stage-resize-handle:hover {
  color: #fff;
  background: #2d3a3f;
}

.empty-stage {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  gap: 6px;
  color: #6a6d68;
  text-align: center;
}

.empty-stage[hidden] {
  display: none;
}

.empty-stage strong {
  color: #3e433f;
  font-size: 14px;
}

.empty-stage span {
  font-size: 11px;
}

.empty-stage-mark {
  display: grid;
  width: 42px;
  height: 42px;
  margin: 0 auto 4px;
  place-items: center;
  color: #fff;
  background: var(--accent);
  border-radius: 50%;
  font-size: 24px;
}

.transport-bar {
  position: absolute;
  z-index: 4;
  right: 52px;
  bottom: 12px;
  left: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  pointer-events: none;
}

.transport-controls {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 4px;
  background: rgba(251, 250, 246, 0.88);
  border: 1px solid rgba(190, 186, 176, 0.72);
  border-radius: 6px;
  box-shadow: 0 5px 18px rgba(28, 30, 27, 0.08);
  backdrop-filter: blur(9px);
  pointer-events: auto;
}

.play-button {
  min-width: 132px;
  color: #fff;
  background: var(--ink);
  border: 1px solid var(--ink);
}

.play-button:hover:not(:disabled) {
  background: #30363a;
}

.play-button svg {
  width: 16px;
  height: 16px;
}

.transition-readout {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 7px 9px;
  color: #888985;
  background: rgba(251, 250, 246, 0.82);
  border: 1px solid rgba(190, 186, 176, 0.62);
  border-radius: 5px;
  box-shadow: 0 5px 18px rgba(28, 30, 27, 0.07);
  backdrop-filter: blur(9px);
  font-size: 10px;
  pointer-events: auto;
}

.transition-readout strong {
  color: var(--ink);
  font-family: "Cascadia Mono", Consolas, monospace;
  font-size: 12px;
}

.stage-panel.is-dark .transport-controls,
.stage-panel.is-dark .transition-readout {
  color: #bfc8c6;
  background: rgba(23, 31, 34, 0.88);
  border-color: rgba(87, 103, 107, 0.8);
}

.stage-panel.is-dark .transition-readout strong {
  color: #ffffff;
}

.stage-panel.is-dark .transport-controls .icon-button:not(.play-button) {
  color: #c4cdcb;
  background: #263136;
  border-color: #45545a;
}

.inspector {
  display: flex;
  min-height: 0;
  flex-direction: column;
  padding: 20px 22px;
  overflow-y: auto;
  background: rgba(251, 250, 246, 0.68);
}

.inspector-body {
  display: flex;
  min-height: 0;
  flex: 1;
  flex-direction: column;
}

.mobile-panel-toggle {
  display: none;
}

.inspector-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--line);
}

.inspector-tab {
  padding: 0 0 10px;
  color: #9a9b95;
  font-size: 11px;
  font-weight: 650;
  text-align: center;
}

.inspector-tab.is-active {
  margin-bottom: -1px;
  color: var(--ink);
  border-bottom: 2px solid var(--accent);
}

.inspector-section {
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}

.inspector-section--dancer {
  margin-top: 20px;
}

.inspector-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 14px;
}

.inspector-heading h3 {
  margin: 0;
  font-size: 15px;
  font-weight: 650;
}

.sequence-chip {
  display: grid;
  width: 32px;
  height: 27px;
  place-items: center;
  color: #747772;
  background: #ece9e1;
  border-radius: 4px;
  font-family: "Cascadia Mono", Consolas, monospace;
  font-size: 10px;
}

.inspector-heading-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}

.inspector-heading-actions .icon-button {
  width: 29px;
  height: 27px;
}

.inspector-heading-actions .icon-button svg {
  width: 14px;
  height: 14px;
}

.stack-form {
  display: grid;
  gap: 11px;
}

.field {
  display: grid;
  gap: 6px;
  min-width: 0;
}

.field > span,
.coordinate-field > span {
  color: #777a75;
  font-size: 10px;
  font-weight: 650;
}

.field input,
.field select,
.field textarea,
.coordinate-field input {
  width: 100%;
  min-width: 0;
  padding: 9px 10px;
  color: var(--ink);
  background: #fff;
  border: 1px solid #d8d4ca;
  border-radius: 5px;
  outline: none;
  transition: 150ms ease;
}

.field textarea {
  resize: vertical;
}

.field input:focus,
.field select:focus,
.field textarea:focus,
.coordinate-field input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(235, 94, 53, 0.12);
}

.field-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 10px;
}

.color-input {
  height: 36px;
  padding: 3px !important;
}

.input-with-suffix {
  position: relative;
}

.input-with-suffix input {
  padding-right: 36px;
}

.input-with-suffix span {
  position: absolute;
  top: 9px;
  right: 11px;
  color: #8d8f8a;
  font-size: 11px;
}

.coordinate-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.coordinate-field {
  display: grid;
  gap: 6px;
}

.inspector-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin-top: auto;
  padding-top: 20px;
}

.inspector-stats > div {
  display: grid;
  gap: 5px;
}

.inspector-stats > div + div {
  padding-left: 18px;
  border-left: 1px solid var(--line);
}

.inspector-stats span {
  color: #898b85;
  font-size: 9px;
  letter-spacing: 0.04em;
}

.inspector-stats strong {
  font-family: "Cascadia Mono", Consolas, monospace;
  font-size: 17px;
  font-weight: 550;
}

.timeline {
  min-width: 0;
  min-height: 0;
  padding: 16px 26px 18px;
  overflow: hidden;
  background: rgba(251, 250, 246, 0.82);
  border-top: 1px solid var(--line);
}

.timeline-body {
  min-width: 0;
}

.mobile-panel-toggle-copy {
  display: grid;
  min-width: 0;
  gap: 3px;
  text-align: left;
}

.mobile-panel-toggle-copy strong {
  font-size: 13px;
  font-weight: 700;
}

.mobile-panel-toggle-copy small {
  overflow: hidden;
  color: #8b8e88;
  font-size: 10px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.mobile-panel-chevron {
  flex: 0 0 auto;
  width: 17px;
  height: 17px;
  color: #858882;
  transition: transform 160ms ease;
}

.mobile-panel-toggle[aria-expanded="true"] .mobile-panel-chevron {
  transform: rotate(180deg);
}

.timeline-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 13px;
}

.formation-track {
  display: flex;
  gap: 9px;
  min-width: 0;
  padding-bottom: 2px;
  overflow-x: auto;
  scrollbar-color: #c6c1b6 transparent;
  scrollbar-width: thin;
}

.formation-card {
  position: relative;
  display: grid;
  min-width: 148px;
  max-width: 190px;
  flex: 0 1 170px;
  grid-template-columns: 32px minmax(0, 1fr);
  align-items: center;
  gap: 9px;
  padding: 11px;
  color: #525651;
  background: #fff;
  border: 1px solid #dcd8ce;
  border-radius: 6px;
  text-align: left;
}

.formation-card-copy {
  padding-right: 16px;
}

.formation-drag-handle {
  position: absolute;
  top: 6px;
  right: 5px;
  z-index: 2;
  display: grid;
  width: 22px;
  height: 22px;
  padding: 0;
  place-items: center;
  color: #a2a39e;
  background: transparent;
  border: 0;
  border-radius: 4px;
  cursor: grab;
  opacity: 0.55;
  touch-action: none;
}

.formation-drag-handle:hover {
  color: var(--ink);
  background: #ece9e1;
  opacity: 1;
}

.formation-drag-handle svg {
  width: 14px;
  height: 14px;
  fill: currentColor;
  stroke: none;
}

.formation-card.is-selected .formation-drag-handle {
  color: var(--accent);
}

.formation-card.is-dragging {
  z-index: 3;
  color: var(--ink);
  background: #fff4ed;
  border-color: var(--accent);
  border-style: dashed;
  box-shadow: 0 9px 24px rgba(235, 94, 53, 0.18);
  opacity: 0.72;
}

.formation-track.is-sorting {
  cursor: grabbing;
  user-select: none;
}

.formation-track.is-sorting .formation-card:not(.is-dragging) {
  transition: border-color 120ms ease, background-color 120ms ease;
}

@media (hover: none), (pointer: coarse) {
  .formation-drag-handle {
    color: #747872;
    background: #f2efe8;
    opacity: 0.9;
  }
}

.formation-card::after {
  position: absolute;
  top: 50%;
  right: -10px;
  width: 10px;
  height: 1px;
  background: #cbc6bb;
  content: "";
}

.formation-card:last-child::after {
  display: none;
}

.formation-card:hover {
  border-color: #bdb8ad;
}

.formation-card.is-selected {
  color: var(--ink);
  background: #fff8f4;
  border-color: var(--accent);
  box-shadow: 0 5px 17px rgba(235, 94, 53, 0.1);
}

.formation-number {
  display: grid;
  width: 32px;
  height: 32px;
  place-items: center;
  color: #777b75;
  background: #efede6;
  border-radius: 4px;
  font-family: "Cascadia Mono", Consolas, monospace;
  font-size: 10px;
}

.formation-card.is-selected .formation-number {
  color: #fff;
  background: var(--accent);
}

.formation-card-copy {
  min-width: 0;
}

.formation-card-name {
  display: block;
  overflow: hidden;
  font-size: 12px;
  font-weight: 650;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.formation-card-time {
  display: block;
  margin-top: 4px;
  color: #92948f;
  font-family: "Cascadia Mono", Consolas, monospace;
  font-size: 9px;
}

.modal {
  width: min(540px, calc(100vw - 32px));
  max-height: calc(100vh - 32px);
  padding: 0;
  overflow: auto;
  color: var(--ink);
  background: var(--panel);
  border: 1px solid #d5d0c5;
  border-radius: 8px;
  box-shadow: 0 28px 80px rgba(16, 18, 20, 0.32);
}

.modal::backdrop {
  background: rgba(15, 18, 20, 0.56);
  backdrop-filter: blur(4px);
}

.modal-form {
  display: grid;
  gap: 16px;
  padding: 24px;
}

.modal-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  padding-bottom: 15px;
  border-bottom: 1px solid var(--line);
}

.modal-header h2 {
  margin: 0;
  font-size: 21px;
  font-weight: 650;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  padding-top: 10px;
}

.ratio-fields {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: end;
  gap: 7px;
}

.ratio-times {
  padding-bottom: 10px;
  color: #8e918c;
  font-size: 11px;
}

.toast-region {
  position: fixed;
  z-index: 100;
  right: 22px;
  bottom: 22px;
  display: grid;
  width: min(340px, calc(100vw - 32px));
  gap: 8px;
  pointer-events: none;
}

.toast {
  padding: 12px 15px;
  color: #f8f7f3;
  background: #23282c;
  border-left: 3px solid var(--accent);
  border-radius: 5px;
  box-shadow: var(--shadow);
  font-size: 12px;
  animation: toast-in 180ms ease-out;
}

.toast.is-error {
  border-left-color: #e05b5b;
}

.loading-screen {
  position: fixed;
  z-index: 200;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  color: #d9ddda;
  background: var(--ink);
  font-size: 12px;
  letter-spacing: 0.08em;
  transition: opacity 260ms ease, visibility 260ms ease;
}

.loading-screen.is-hidden {
  visibility: hidden;
  opacity: 0;
}

.loading-mark {
  width: 34px;
  height: 34px;
  font-size: 21px;
}

@keyframes toast-in {
  from {
    transform: translateY(8px);
    opacity: 0;
  }
}

@media (max-width: 1120px) {
  .workspace-body {
    grid-template-columns: minmax(0, 1fr) 250px;
  }

  .inspector {
    padding: 18px;
  }

  .stage-panel {
    padding-right: 20px;
    padding-left: 20px;
  }
}

@media (max-width: 940px) {
  body {
    overflow: auto;
  }

  .app-shell {
    display: block;
    min-height: 100%;
    height: auto;
  }

  .sidebar {
    display: grid;
    grid-template-columns: auto minmax(180px, 0.8fr) minmax(240px, 1.2fr);
    align-items: center;
    gap: 18px;
    padding: 15px 18px;
  }

  .brand-block {
    padding: 0;
  }

  .side-section {
    padding: 0;
    border: 0;
  }

  .side-section--dancers {
    display: block;
    min-width: 0;
  }

  .side-section--dancers .section-heading,
  .project-description,
  .sidebar-footer,
  .brand-subtitle {
    display: none;
  }

  .dancer-list {
    display: flex;
    gap: 5px;
    overflow-x: auto;
  }

  .dancer-item {
    width: auto;
    min-width: 58px;
    grid-template-columns: 28px minmax(0, 1fr);
    margin: 0;
    padding: 6px;
  }

  .dancer-name,
  .dancer-position {
    display: none;
  }

  .workspace {
    min-height: 900px;
    grid-template-rows: 76px minmax(650px, 1fr) 166px;
  }

  .workspace-header {
    padding: 0 20px;
  }

  .workspace-body {
    grid-template-columns: minmax(0, 1fr) 250px;
  }
}

@media (max-width: 720px) {
  .sidebar {
    grid-template-columns: minmax(0, 1fr);
    gap: 10px;
  }

  .brand-block {
    display: none;
  }

  .side-section--dancers {
    display: block;
    min-width: 0;
  }

  .side-section--dancers .section-heading {
    display: flex;
    margin-bottom: 8px;
  }

  .side-section--dancers .dancer-list {
    display: flex;
    gap: 6px;
    padding-bottom: 3px;
    overflow-x: auto;
    overflow-y: hidden;
  }

  .side-section--dancers .dancer-item {
    min-width: 68px;
    margin: 0;
    padding: 7px;
    border-color: #30363b;
  }

  .side-section--dancers .dancer-item.is-selected {
    border-color: #596268;
  }

  .workspace {
    height: auto;
    min-height: 0;
    grid-template-rows: 76px auto auto;
    align-content: start;
    overflow: visible;
  }

  .workspace-header {
    padding: 0 14px;
  }

  .save-state,
  #editProjectButton {
    display: none;
  }

  .export-button {
    display: inline-grid;
    width: 34px;
    min-height: 34px;
    padding: 0;
  }

  .export-button span {
    display: none;
  }

  .workspace-body {
    display: flex;
    flex-direction: column;
    min-height: 0;
    overflow: visible;
  }

  .stage-panel {
    min-height: 540px;
    padding: 16px 14px 13px;
    border-right: 0;
  }

  .canvas-frame {
    min-height: 280px;
  }

  .inspector {
    min-height: 0;
    padding: 0;
    border-top: 1px solid var(--line);
    overflow: hidden;
  }

  .inspector:not(.is-collapsed) {
    height: auto;
    overflow: visible;
  }

  .inspector-body {
    padding: 16px;
  }

  .inspector.is-collapsed {
    height: 56px;
  }

  .inspector.is-collapsed .inspector-body {
    display: none;
  }

  .timeline {
    height: auto;
    padding: 0;
    overflow: hidden;
  }

  .timeline:not(.is-collapsed) {
    overflow: visible;
  }

  .timeline-body {
    padding: 14px;
  }

  .timeline.is-collapsed {
    height: 56px;
  }

  .timeline.is-collapsed .timeline-body {
    display: none;
  }

  .timeline-header {
    justify-content: flex-end;
    margin-bottom: 12px;
  }

  .timeline-header > div {
    display: none;
  }

  .mobile-panel-toggle {
    display: flex;
    width: 100%;
    height: 56px;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    padding: 0 16px;
    color: var(--ink);
    background: rgba(251, 250, 246, 0.96);
    border: 0;
    border-bottom: 1px solid var(--line);
    text-align: left;
  }

  .timeline .mobile-panel-toggle {
    border-top: 1px solid var(--line);
    border-bottom: 0;
  }

  .formation-card {
    min-width: 140px;
  }

  .transition-readout {
    display: none;
  }

  .play-button {
    min-width: 118px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}