:root {
  color-scheme: dark;
  --bg: #121310;
  --panel: #181915;
  --panel-2: #1f211c;
  --fg: #ecebe3;
  --muted: rgb(236 235 227 / 54%);
  --dim: rgb(236 235 227 / 28%);
  --line: rgb(236 235 227 / 10%);
  --line-strong: rgb(236 235 227 / 22%);
  --accent: #f04d30;
  --accent-soft: rgb(240 77 48 / 16%);
  --amber: #e5a93c;
  --teal: #58b89c;
  font-family: InterVariable, Inter, ui-sans-serif, system-ui, sans-serif;
  font-feature-settings: "cv02", "cv03", "cv04", "cv11";
  font-variant-numeric: tabular-nums;
  background: var(--bg);
  color: var(--fg);
  -webkit-font-smoothing: antialiased;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  user-select: none;
}

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

.app {
  display: grid;
  grid-template-rows: auto 1fr;
  height: 100dvh;
  padding: 1rem 1.25rem;
  gap: 0.875rem;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

h1 {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 560;
  letter-spacing: -0.035em;
}

.view-tabs {
  display: inline-flex;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 2px;
}

.tab {
  background: transparent;
  border: 0;
  padding: 0.3rem 0.75rem;
  font-size: 0.8125rem;
  border-radius: 5px;
  color: var(--muted);
  cursor: pointer;
}

.tab.active {
  background: var(--panel-2);
  color: var(--fg);
  font-weight: 520;
}

.controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.field {
  display: inline-flex;
  align-items: center;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 0.25rem 0.6rem;
  gap: 0.2rem;
  font-size: 0.8125rem;
  color: var(--muted);
}

.field:focus-within {
  border-color: var(--line-strong);
}

.field input {
  background: transparent;
  border: 0;
  outline: none;
  width: 7.5rem;
  color: var(--fg);
}

.segmented {
  display: inline-flex;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 2px;
}

.seg {
  background: transparent;
  border: 0;
  padding: 0.25rem 0.55rem;
  font-size: 0.75rem;
  border-radius: 5px;
  color: var(--muted);
  cursor: pointer;
}

.seg.active {
  background: var(--panel-2);
  color: var(--fg);
}

.live-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.78rem;
  color: var(--muted);
  padding-left: 0.25rem;
}

.pulse {
  width: 0.48rem;
  height: 0.48rem;
  border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 0 0.22rem var(--accent-soft);
}

.view {
  display: none;
  min-height: 0;
}

.view.active {
  display: grid;
  grid-template-rows: auto 1fr;
  gap: 0.75rem;
}

.hud {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 9px;
  padding: 0.45rem 0.75rem;
}

.stages {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.stage-pill {
  font-size: 0.76rem;
  padding: 0.22rem 0.55rem;
  border-radius: 5px;
  color: var(--dim);
  border: 1px solid transparent;
}

.stage-pill.active {
  color: var(--fg);
  background: var(--accent-soft);
  border-color: rgb(240 77 48 / 38%);
}

.stage-pill.done {
  color: var(--muted);
}

.telemetry-strip {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.78rem;
  color: var(--muted);
}

.ghost-btn,
.primary-btn {
  border-radius: 6px;
  padding: 0.28rem 0.65rem;
  font-size: 0.76rem;
  cursor: pointer;
  border: 1px solid var(--line);
  background: var(--panel-2);
  color: var(--fg);
}

.ghost-btn:hover {
  border-color: var(--line-strong);
}

.primary-btn {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  font-weight: 520;
}

.arena {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  min-height: 0;
}

#arena-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.arena-stage {
  position: absolute;
  inset: 0;
}

/* Start card */
.start-card {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: min(22.5rem, 90%);
  background: #141512;
  border: 1px solid var(--line-strong);
  border-radius: 11px;
  padding: 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  box-shadow: 0 18px 42px rgb(0 0 0 / 45%);
}

.start-buttons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.55rem;
}

.start-device-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  padding: 0.7rem 0.65rem;
  border-radius: 8px;
  border: 1px solid var(--line-strong);
  background: var(--panel-2);
  color: var(--fg);
  font-size: 0.84rem;
  font-weight: 540;
  cursor: pointer;
}

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

.start-device-btn small {
  font-size: 0.7rem;
  font-weight: 400;
  color: var(--muted);
}

/* Stage 1: Fitts targets */
.fitts-target {
  position: absolute;
  transform: translate(-50%, -50%);
  border-radius: 999px;
  background: var(--accent);
  border: 1.5px solid #fff;
  color: #fff;
  font-size: 0.75rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 0 0 6px var(--accent-soft);
}

.fitts-ghost {
  position: absolute;
  transform: translate(-50%, -50%);
  border-radius: 999px;
  border: 1px dashed rgb(236 235 227 / 24%);
  color: var(--dim);
  font-size: 0.7rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

/* Stage 2: Dropdown menu */
.menu-unit {
  position: absolute;
  min-width: 12.5rem;
}

.menu-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.48rem 0.75rem;
  background: var(--panel-2);
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  font-size: 0.8125rem;
  cursor: pointer;
}

.menu-trigger.waiting {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.menu-popover {
  margin-top: 0.35rem;
  background: #141512;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  padding: 0.25rem;
  display: flex;
  flex-direction: column;
  gap: 2px;
  box-shadow: 0 14px 32px rgb(0 0 0 / 50%);
}

.menu-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 28px;
  padding: 0 0.6rem;
  border: 0;
  border-radius: 5px;
  background: transparent;
  font-size: 0.78rem;
  color: var(--muted);
  cursor: pointer;
  text-align: left;
}

.menu-item:hover {
  background: var(--panel-2);
  color: var(--fg);
}

.menu-item.target-row {
  color: var(--fg);
  background: var(--accent-soft);
  border: 1px solid rgb(240 77 48 / 45%);
}

/* Stage 3: Scroll & Acquire */
.scroll-card {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: min(30rem, 90%);
  height: min(23rem, 84%);
  background: #141512;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  display: grid;
  grid-template-rows: auto 1fr;
  overflow: hidden;
}

.scroll-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.6rem 0.85rem;
  border-bottom: 1px solid var(--line);
  font-size: 0.8rem;
}

.scroll-header strong {
  color: var(--accent);
}

.scroll-list {
  overflow-y: auto;
  padding: 0.4rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.scroll-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.42rem 0.65rem;
  border-radius: 6px;
  background: var(--panel);
  border: 1px solid var(--line);
  font-size: 0.78rem;
}

.scroll-row.target {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.scroll-row button {
  padding: 0.2rem 0.55rem;
  font-size: 0.74rem;
  border-radius: 5px;
  border: 1px solid var(--line-strong);
  background: var(--panel-2);
  cursor: pointer;
}

.scroll-row.target button {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* Stage 4: Drag token */
.drag-token {
  position: absolute;
  transform: translate(-50%, -50%);
  width: 44px;
  height: 44px;
  border-radius: 999px;
  background: var(--accent);
  border: 1.5px solid #fff;
  color: #fff;
  font-size: 0.74rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: grab;
  touch-action: none;
  box-shadow: 0 0 0 6px var(--accent-soft);
}

.drag-token:active {
  cursor: grabbing;
}

.drop-slot {
  position: absolute;
  transform: translate(-50%, -50%);
  width: 64px;
  height: 64px;
  border-radius: 999px;
  border: 2px dashed var(--fg);
  background: rgb(236 235 227 / 5%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.72rem;
  color: var(--muted);
  pointer-events: none;
}

/* Stage 5: Cadence form */
.cadence-card {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: min(23rem, 90%);
  background: #141512;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.cadence-field {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  font-size: 0.76rem;
  color: var(--muted);
}

.cadence-field code {
  color: var(--fg);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

.cadence-field input {
  background: var(--panel);
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  padding: 0.45rem 0.6rem;
  font-size: 0.85rem;
  color: var(--fg);
  outline: none;
}

.cadence-field input:focus {
  border-color: var(--accent);
}

/* Lab & Model View */
.lab-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 9px;
  padding: 0.45rem 0.75rem;
}

.profile-filters {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  flex-wrap: wrap;
}

.filter-chip {
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.2rem 0.6rem;
  font-size: 0.75rem;
  color: var(--muted);
  cursor: pointer;
}

.filter-chip.active {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--fg);
}

.lab-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.meta-label {
  font-size: 0.74rem;
  color: var(--muted);
}

.lab-grid {
  display: grid;
  grid-template-columns: 1.15fr 1.15fr 0.95fr;
  gap: 0.75rem;
  min-height: 0;
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  min-height: 0;
  overflow: hidden;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.card-header.subheader {
  margin-top: 0.35rem;
  padding-top: 0.55rem;
  border-top: 1px solid var(--line);
}

h2 {
  margin: 0;
  font-size: 0.82rem;
  font-weight: 540;
  letter-spacing: -0.01em;
}

.canvas-stack {
  display: grid;
  grid-template-rows: 1.35fr 0.85fr;
  gap: 0.6rem;
  flex: 1;
  min-height: 0;
}

.canvas-box {
  position: relative;
  background: #11120f;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  min-height: 0;
}

.canvas-box.comparator-box {
  flex: 1;
  cursor: crosshair;
}

.canvas-box canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.canvas-tag {
  position: absolute;
  left: 0.55rem;
  top: 0.45rem;
  font-size: 0.7rem;
  color: var(--muted);
  pointer-events: none;
}

.legend {
  position: absolute;
  left: 0.6rem;
  bottom: 0.5rem;
  display: flex;
  gap: 0.85rem;
  font-size: 0.72rem;
  color: var(--muted);
  pointer-events: none;
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.dot {
  width: 7px;
  height: 7px;
  border-radius: 999px;
  display: inline-block;
}

.dot.raw {
  background: #767870;
}

.dot.base {
  background: var(--amber);
}

.dot.fitted {
  background: var(--accent);
}

.toggle-label {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.74rem;
  color: var(--muted);
  cursor: pointer;
}

.params-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.35rem 0.65rem;
  font-size: 0.74rem;
}

.param-row {
  display: flex;
  justify-content: space-between;
  padding: 0.25rem 0.4rem;
  background: #141512;
  border: 1px solid var(--line);
  border-radius: 5px;
}

.param-row span {
  color: var(--muted);
}

.param-row strong {
  font-weight: 540;
}

.roster-list {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.roster-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.38rem 0.55rem;
  border-radius: 6px;
  background: #141512;
  border: 1px solid var(--line);
  font-size: 0.75rem;
  cursor: pointer;
}

.roster-item:hover,
.roster-item.selected {
  border-color: var(--accent);
}

.roster-meta {
  display: flex;
  gap: 0.6rem;
  color: var(--muted);
  font-size: 0.72rem;
}

@media (max-width: 64rem) {
  .lab-grid {
    grid-template-columns: 1fr;
    overflow-y: auto;
  }
}