/* Group and Evolve — visual system */
:root {
  color-scheme: dark;
  --bg: #070a08;
  --stage-bg: #080c09;
  --panel: #0a0d0b;
  --panel-raised: #0e1310;
  --ink: #eef4e8;
  --muted: #929e93;
  --faint: #606c62;
  --line: rgba(225, 242, 226, 0.1);
  --line-strong: rgba(225, 242, 226, 0.16);
  --acid: #d5ff75;
  --acid-soft: rgba(213, 255, 117, 0.12);
  --mint: #70e9c1;
  --coral: #ff8e7f;
  --amber: #ffca6d;
  --violet: #baa0ff;
  --mono: "SFMono-Regular", "Cascadia Code", "Roboto Mono", "Menlo", monospace;
  --sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --radius-lg: 20px;
  --radius-md: 14px;
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

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

body {
  overflow: hidden;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

button,
input {
  font: inherit;
}

button {
  color: inherit;
}

button:focus-visible,
input:focus-visible {
  outline: 1px solid var(--acid);
  outline-offset: 3px;
}

::selection {
  color: #0b100b;
  background: var(--acid);
}

.app-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 378px;
  height: 100vh;
  height: 100dvh;
  min-height: 560px;
  background: var(--bg);
}

/* ---------------------------------------------------------------- stage */

.stage {
  position: relative;
  min-width: 0;
  overflow: hidden;
  isolation: isolate;
  background:
    radial-gradient(80% 70% at 54% 45%, rgba(72, 112, 70, 0.1), transparent 65%),
    radial-gradient(48% 48% at 18% 90%, rgba(84, 119, 104, 0.06), transparent 70%),
    #070b08;
}

#worldCanvas {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  z-index: 0;
  touch-action: none;
  cursor: grab;
}

#worldCanvas.is-dragging {
  cursor: grabbing;
}

#worldCanvas.is-hovering {
  cursor: pointer;
}

.stage::before {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  content: "";
  background:
    linear-gradient(180deg, rgba(5, 8, 6, 0.7) 0%, transparent 18%, transparent 76%, rgba(5, 8, 6, 0.74) 100%),
    radial-gradient(85% 80% at 50% 50%, transparent 48%, rgba(3, 6, 4, 0.4) 100%);
}

.stage-grain {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  opacity: 0.045;
  mix-blend-mode: soft-light;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='150' height='150'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.82' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='150' height='150' filter='url(%23n)' opacity='.65'/%3E%3C/svg%3E");
}

.stage-header {
  position: absolute;
  top: 28px;
  left: 30px;
  right: 28px;
  z-index: 5;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  pointer-events: none;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
  color: inherit;
  text-decoration: none;
  pointer-events: auto;
  text-shadow: 0 2px 26px rgba(0, 0, 0, 0.45);
}

.brand:hover h1 {
  color: var(--acid);
}

.brand h1 {
  transition: color 180ms ease;
}

.brand-mark {
  display: grid;
  flex: 0 0 48px;
  width: 48px;
  height: 48px;
  place-items: center;
  color: var(--acid);
  border: 1px solid rgba(213, 255, 117, 0.23);
  border-radius: 50%;
  background: radial-gradient(circle at 50% 42%, rgba(213, 255, 117, 0.14), rgba(8, 13, 9, 0.5) 68%);
  box-shadow:
    inset 0 0 22px rgba(213, 255, 117, 0.06),
    0 0 34px rgba(213, 255, 117, 0.06);
}

.brand-mark svg {
  width: 38px;
  height: 38px;
}

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

.eyebrow {
  margin: 0 0 5px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: 0.17em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

.brand h1 {
  margin: 0;
  font-size: clamp(23px, 2vw, 30px);
  font-weight: 510;
  line-height: 1.1;
  letter-spacing: -0.035em;
  white-space: nowrap;
}

.brand-subtitle {
  margin: 5px 0 0;
  color: rgba(226, 239, 222, 0.48);
  font-size: 10.5px;
  letter-spacing: 0.025em;
}

.stage-stats {
  display: flex;
  flex: 0 0 auto;
  align-items: stretch;
  overflow: hidden;
  min-height: 54px;
  border: 1px solid rgba(226, 241, 225, 0.1);
  border-radius: 15px;
  background: rgba(8, 13, 9, 0.56);
  box-shadow:
    0 16px 38px rgba(0, 0, 0, 0.14),
    inset 0 1px 0 rgba(255, 255, 255, 0.025);
  backdrop-filter: blur(16px) saturate(120%);
  pointer-events: auto;
}

.stage-stat {
  min-width: 82px;
  padding: 10px 15px 9px;
  border-right: 1px solid var(--line);
}

.stage-stat-label {
  display: block;
  margin-bottom: 2px;
  color: var(--faint);
  font-size: 9px;
  letter-spacing: 0.03em;
  white-space: nowrap;
}

.stage-stat strong {
  display: block;
  color: #f2f8eb;
  font-family: var(--mono);
  font-size: 16px;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
  letter-spacing: -0.03em;
  white-space: nowrap;
}

.run-state {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 0 16px;
  color: var(--acid);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.06em;
  white-space: nowrap;
}

.run-state i,
.live-label i,
.neural-indicator,
.foot-status i {
  display: inline-block;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 10px currentColor;
}

.run-state i {
  animation: status-pulse 2.1s ease-in-out infinite;
}

.run-state.is-paused {
  color: var(--muted);
}

.run-state.is-paused i {
  animation: none;
  background: var(--muted);
  box-shadow: none;
}

.run-state.is-extinct {
  color: var(--coral);
}

.run-state.is-extinct i {
  animation: none;
}

@keyframes status-pulse {
  0%,
  100% {
    opacity: 0.45;
    transform: scale(0.8);
  }
  50% {
    opacity: 1;
    transform: scale(1);
  }
}

.stage-bottom {
  position: absolute;
  right: 28px;
  bottom: 24px;
  left: 30px;
  z-index: 4;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  pointer-events: none;
  transition: opacity 220ms var(--ease);
}

.stage.is-inspecting .stage-bottom {
  opacity: 0;
}

.stage-caption {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 9px;
  min-width: 0;
}

.phase-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 21px;
  padding: 0 8px;
  color: var(--acid);
  border: 1px solid rgba(213, 255, 117, 0.2);
  border-radius: 999px;
  background: rgba(213, 255, 117, 0.045);
  font-family: var(--mono);
  font-size: 7.5px;
  letter-spacing: 0.025em;
  white-space: nowrap;
  transition:
    color 220ms ease,
    background 220ms ease,
    border-color 220ms ease;
}

.phase-chip i {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 7px currentColor;
}

.phase-chip.is-cohesion {
  color: var(--mint);
  border-color: rgba(112, 233, 193, 0.22);
  background: rgba(112, 233, 193, 0.045);
}

.phase-chip.is-conflict {
  color: var(--coral);
  border-color: rgba(255, 142, 127, 0.28);
  background: rgba(255, 142, 127, 0.06);
}

.caption-index {
  color: rgba(213, 255, 117, 0.64);
  font-family: var(--mono);
  font-size: 8.5px;
  letter-spacing: 0.13em;
  white-space: nowrap;
}

.caption-copy {
  color: rgba(226, 239, 222, 0.42);
  font-size: 10px;
  white-space: nowrap;
}

.legend {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 16px;
  color: rgba(226, 239, 222, 0.4);
  font-size: 9.5px;
  white-space: nowrap;
}

.legend span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.legend-line {
  width: 16px;
  height: 1px;
  background: linear-gradient(90deg, var(--acid), var(--violet));
}

.legend-ring {
  width: 8px;
  height: 8px;
  border: 1px solid rgba(112, 233, 193, 0.8);
  border-radius: 50%;
}

.view-tools {
  position: absolute;
  right: 28px;
  bottom: 56px;
  z-index: 6;
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 5px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(8, 13, 9, 0.6);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.16);
  backdrop-filter: blur(14px);
}

.zoom-readout {
  padding: 0 6px 0 5px;
  color: var(--faint);
  font-family: var(--mono);
  font-size: 9px;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}

.tool-button,
.icon-button {
  display: inline-grid;
  width: 30px;
  height: 30px;
  padding: 0;
  cursor: pointer;
  place-items: center;
  color: var(--muted);
  border: 1px solid transparent;
  border-radius: 8px;
  background: transparent;
  transition:
    color 160ms ease,
    background 160ms ease,
    border-color 160ms ease;
}

.tool-button svg {
  width: 15px;
  height: 15px;
}

.tool-button:hover,
.icon-button:hover {
  color: var(--ink);
  border-color: var(--line);
  background: rgba(227, 243, 227, 0.06);
}

/* ---------------------------------------------------------- specimen card */

.specimen-card {
  position: absolute;
  bottom: 75px;
  left: 28px;
  z-index: 8;
  width: min(396px, calc(100% - 56px));
  max-height: min(620px, calc(100% - 168px));
  overflow-x: hidden;
  overflow-y: auto;
  padding: 17px;
  border: 1px solid rgba(222, 240, 222, 0.14);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(140deg, rgba(27, 37, 28, 0.82), rgba(8, 12, 9, 0.93) 46%),
    rgba(8, 12, 9, 0.9);
  box-shadow:
    0 28px 70px rgba(0, 0, 0, 0.38),
    inset 0 1px 0 rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(24px) saturate(125%);
  animation: card-in 280ms var(--ease);
  scrollbar-width: thin;
  scrollbar-color: rgba(213, 255, 117, 0.2) transparent;
}

.specimen-card.is-right {
  right: 28px;
  left: auto;
}

.stage.has-right-card .view-tools {
  right: auto;
  left: 28px;
}

@keyframes card-in {
  from {
    opacity: 0;
    transform: translateY(8px) scale(0.985);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.specimen-card::-webkit-scrollbar,
.sidebar::-webkit-scrollbar {
  width: 5px;
}

.sidebar::-webkit-scrollbar-track {
  background: rgba(225, 242, 226, 0.025);
}

.specimen-card::-webkit-scrollbar-thumb,
.sidebar::-webkit-scrollbar-thumb {
  border-radius: 4px;
  background: rgba(213, 255, 117, 0.18);
}

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

.specimen-ident {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.gene-swatch {
  flex: 0 0 auto;
  width: 9px;
  height: 29px;
  border-radius: 3px;
  background: var(--acid);
  box-shadow: 0 0 18px color-mix(in srgb, var(--acid), transparent 40%);
}

.specimen-ident .eyebrow {
  margin-bottom: 2px;
  color: var(--faint);
}

.specimen-ident h2 {
  margin: 0;
  font-size: 17px;
  font-weight: 500;
  letter-spacing: -0.02em;
}

.specimen-head-actions {
  display: flex;
  align-items: center;
  gap: 3px;
}

.icon-button.small {
  width: 27px;
  height: 27px;
}

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

.mini-button {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  height: 27px;
  padding: 0 8px;
  cursor: pointer;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.02);
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.04em;
  transition:
    color 160ms ease,
    border-color 160ms ease,
    background 160ms ease;
}

.mini-button svg {
  width: 13px;
  height: 13px;
}

.mini-button:hover {
  color: var(--ink);
  border-color: var(--line-strong);
}

.mini-button.is-active {
  color: #0b100b;
  border-color: var(--acid);
  background: var(--acid);
}

.vital-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin: 14px 0 13px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: var(--line);
}

.vital-cell {
  min-width: 0;
  padding: 8px 9px;
  background: rgba(11, 16, 12, 0.84);
}

.vital-cell span {
  display: block;
  margin-bottom: 3px;
  overflow: hidden;
  color: var(--faint);
  font-size: 8.5px;
  letter-spacing: 0.02em;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.vital-cell strong {
  display: block;
  overflow: hidden;
  color: #e9f2df;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  line-height: 1.25;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.vital-cell strong em {
  color: var(--faint);
  font-style: normal;
  font-size: 8px;
}

.vital-cell .is-low {
  color: var(--coral);
}

.vital-cell .is-mid {
  color: var(--amber);
}

.social-summary {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 7px 11px;
  margin: -3px 0 12px;
  padding: 7px 9px;
  color: var(--faint);
  border: 1px solid rgba(225, 242, 226, 0.075);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.018);
  font-family: var(--mono);
  font-size: 7.5px;
  line-height: 1.35;
}

.social-summary > span {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  white-space: nowrap;
}

.social-summary .social-label {
  color: var(--muted);
}

.social-summary .near-value {
  color: var(--acid);
}

.social-summary .far-value {
  color: var(--coral);
}

.social-summary .social-threshold {
  margin-left: auto;
  color: var(--faint);
}

.relation-dot {
  display: inline-block;
  width: 4px;
  height: 4px;
  border-radius: 50%;
}

.relation-dot.near {
  background: var(--acid);
  box-shadow: 0 0 6px rgba(213, 255, 117, 0.5);
}

.relation-dot.far {
  background: var(--coral);
  box-shadow: 0 0 6px rgba(255, 142, 127, 0.4);
}

.inspector-tabs {
  display: flex;
  align-items: center;
  gap: 3px;
  padding-bottom: 9px;
  border-bottom: 1px solid var(--line);
}

.inspector-tab {
  padding: 5px 8px;
  cursor: pointer;
  color: var(--faint);
  border: 0;
  border-radius: 6px;
  background: transparent;
  font-size: 10px;
  letter-spacing: 0.015em;
  transition:
    color 160ms ease,
    background 160ms ease;
}

.inspector-tab:hover {
  color: var(--ink);
}

.inspector-tab.is-active {
  color: var(--acid);
  background: var(--acid-soft);
}

.tab-spacer {
  flex: 1;
}

.tab-meta {
  color: var(--faint);
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.055em;
}

.inspector-panel {
  padding-top: 11px;
}

#brainCanvas {
  display: block;
  width: 100%;
  height: 156px;
  border: 1px solid rgba(225, 242, 226, 0.07);
  border-radius: 10px;
  background:
    radial-gradient(80% 90% at 50% 50%, rgba(46, 65, 45, 0.13), transparent 74%),
    rgba(5, 9, 6, 0.38);
}

.brain-legend {
  display: flex;
  align-items: center;
  gap: 11px;
  margin: 8px 1px 7px;
  color: var(--faint);
  font-family: var(--mono);
  font-size: 7.5px;
  letter-spacing: 0.01em;
}

.brain-legend span {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.legend-node {
  display: inline-block;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--mint);
}

.legend-node.hidden {
  background: var(--acid);
}

.legend-node.output {
  background: var(--coral);
}

.brain-learning {
  margin-left: auto;
  color: var(--acid);
  letter-spacing: 0.08em;
}

.brain-learning.is-off {
  color: var(--faint);
}

.neural-readout {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--line);
}

.neural-output {
  padding: 7px 8px;
  background: rgba(10, 15, 11, 0.94);
}

.neural-output span {
  display: block;
  margin-bottom: 2px;
  color: var(--faint);
  font-family: var(--mono);
  font-size: 7.5px;
  letter-spacing: 0.01em;
}

.neural-output strong {
  display: block;
  color: var(--ink);
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}

.neural-output strong.acid {
  color: var(--acid);
}

.neural-output strong.coral {
  color: var(--coral);
}

.neural-output strong.mint {
  color: var(--mint);
}

.neural-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-top: 6px;
  color: var(--faint);
  font-family: var(--mono);
  font-size: 7.5px;
}

.panel-note {
  margin: 9px 0 0;
  color: var(--faint);
  font-size: 8.5px;
  line-height: 1.55;
}

/* Gene panel */
.gene-row {
  padding: 7px 0;
  border-bottom: 1px solid rgba(225, 242, 226, 0.065);
}

.gene-row:first-child {
  padding-top: 0;
}

.gene-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 5px;
}

.gene-name {
  color: var(--muted);
  font-size: 9.5px;
}

.gene-name small {
  margin-left: 3px;
  color: var(--faint);
  font-family: var(--mono);
  font-size: 7px;
}

.gene-value {
  color: var(--ink);
  font-family: var(--mono);
  font-size: 10px;
  font-variant-numeric: tabular-nums;
}

.gene-bar {
  display: block;
  height: 2px;
  overflow: hidden;
  border-radius: 2px;
  background: rgba(225, 242, 226, 0.08);
}

.gene-bar i {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--acid);
  box-shadow: 0 0 8px rgba(213, 255, 117, 0.3);
}

.gene-row:nth-child(2) .gene-bar i {
  background: var(--mint);
}

.gene-row:nth-child(5) .gene-bar i {
  background: var(--amber);
}

.gene-row:nth-child(6) .gene-bar i {
  background: var(--coral);
}

/* hover specimen */
.hover-card {
  position: absolute;
  z-index: 7;
  min-width: 160px;
  padding: 8px 10px;
  pointer-events: none;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: rgba(8, 13, 9, 0.9);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.28);
  backdrop-filter: blur(14px);
  transform: translate(14px, -50%);
}

.hover-title {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 4px;
  color: var(--ink);
  font-family: var(--mono);
  font-size: 9px;
}

.hover-title i {
  display: inline-block;
  width: 5px;
  height: 5px;
  border-radius: 50%;
}

.hover-meta {
  display: flex;
  gap: 10px;
  color: var(--faint);
  font-family: var(--mono);
  font-size: 8px;
  font-variant-numeric: tabular-nums;
}

/* extinction */
.empty-overlay {
  position: absolute;
  inset: 0;
  z-index: 10;
  display: grid;
  place-items: center;
  background: rgba(5, 8, 6, 0.38);
  backdrop-filter: blur(2px);
}

.empty-card {
  width: min(360px, calc(100% - 40px));
  padding: 27px;
  text-align: center;
  border: 1px solid var(--line-strong);
  border-radius: 18px;
  background: rgba(9, 14, 10, 0.92);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.45);
  animation: card-in 300ms var(--ease);
}

.empty-card .eyebrow {
  color: var(--coral);
}

.empty-card h2 {
  margin: 8px 0 7px;
  font-size: 26px;
  font-weight: 470;
  letter-spacing: -0.035em;
}

.empty-card p {
  margin: 0 auto 15px;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.65;
}

.empty-stats {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px 20px;
  margin: 0 0 20px;
  color: var(--faint);
  font-family: var(--mono);
  font-size: 8px;
}

.empty-stats strong {
  display: block;
  margin-top: 3px;
  color: var(--ink);
  font-size: 12px;
  font-weight: 500;
}

.primary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 0 18px;
  cursor: pointer;
  color: #0a0f09;
  border: 1px solid var(--acid);
  border-radius: 9px;
  background: var(--acid);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition:
    background 160ms ease,
    transform 160ms var(--ease);
}

.primary-button:hover {
  background: #e0ff9a;
  transform: translateY(-1px);
}

.primary-button:active {
  transform: translateY(0);
}

.primary-button.compact {
  min-height: 31px;
  padding: 0 13px;
  font-size: 10px;
}

/* ---------------------------------------------------------------- sidebar */

.sidebar {
  position: relative;
  z-index: 12;
  display: flex;
  flex-direction: column;
  min-width: 0;
  overflow-x: hidden;
  overflow-y: auto;
  padding: 25px 22px 0;
  border-left: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(22, 31, 23, 0.55) 0%, transparent 18%),
    #090d0a;
  scrollbar-width: thin;
  scrollbar-color: rgba(213, 255, 117, 0.18) transparent;
}

.sidebar::before {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  height: 180px;
  pointer-events: none;
  content: "";
  background: linear-gradient(180deg, rgba(144, 175, 137, 0.035), transparent);
}

.sidebar-head {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
}

.head-actions {
  display: flex;
  align-items: center;
  gap: 3px;
}

.sidebar-head h2 {
  margin: 0;
  font-size: 18px;
  font-weight: 490;
  letter-spacing: -0.025em;
}

.sidebar-head .eyebrow {
  margin-bottom: 4px;
}

.transport {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 34px;
  gap: 8px;
  margin-bottom: 15px;
}

.run-button {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 70px;
  padding: 0 15px;
  cursor: pointer;
  text-align: left;
  color: #0a0f08;
  border: 1px solid var(--acid);
  border-radius: var(--radius-md);
  background: var(--acid);
  box-shadow:
    0 12px 32px rgba(181, 255, 100, 0.1),
    inset 0 1px 0 rgba(255, 255, 255, 0.36);
  transition:
    background 160ms ease,
    transform 160ms var(--ease),
    box-shadow 160ms ease;
}

.run-button:hover {
  background: #e0ff9b;
  box-shadow:
    0 15px 38px rgba(181, 255, 100, 0.15),
    inset 0 1px 0 rgba(255, 255, 255, 0.4);
  transform: translateY(-1px);
}

.run-button:active {
  transform: translateY(0);
}

.run-button.is-paused {
  color: var(--ink);
  border-color: rgba(213, 255, 117, 0.34);
  background: rgba(213, 255, 117, 0.09);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.03);
}

.run-button.is-paused:hover {
  background: rgba(213, 255, 117, 0.13);
}

.run-icon {
  display: grid;
  flex: 0 0 34px;
  width: 34px;
  height: 34px;
  place-items: center;
  border: 1px solid rgba(10, 15, 8, 0.18);
  border-radius: 50%;
  background: rgba(10, 15, 8, 0.1);
}

.run-button.is-paused .run-icon {
  color: var(--acid);
  border-color: rgba(213, 255, 117, 0.2);
  background: rgba(213, 255, 117, 0.08);
}

.run-icon svg {
  width: 19px;
  height: 19px;
}

.run-icon .icon-play {
  display: none;
}

.run-button.is-paused .icon-play {
  display: block;
}

.run-button.is-paused .icon-pause {
  display: none;
}

.run-copy {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
}

.run-copy strong {
  font-size: 13px;
  font-weight: 620;
  letter-spacing: -0.015em;
}

.run-copy small {
  color: rgba(10, 15, 8, 0.56);
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.045em;
}

.run-button.is-paused .run-copy small {
  color: var(--faint);
}

.transport-stack {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.side-control {
  display: grid;
  flex: 1;
  min-height: 31px;
  cursor: pointer;
  place-items: center;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 9px;
  background: rgba(255, 255, 255, 0.018);
  transition:
    color 160ms ease,
    border-color 160ms ease,
    background 160ms ease;
}

.side-control:hover {
  color: var(--acid);
  border-color: rgba(213, 255, 117, 0.24);
  background: rgba(213, 255, 117, 0.05);
}

.side-control svg {
  width: 16px;
  height: 16px;
}

.speed-row {
  display: block;
  margin-bottom: 22px;
  padding-bottom: 19px;
  border-bottom: 1px solid var(--line);
}

.row-label {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  color: var(--muted);
  font-size: 10px;
  white-space: nowrap;
}

.row-label small {
  color: var(--faint);
  font-family: var(--mono);
  font-size: 7.5px;
  letter-spacing: 0.035em;
}

.segmented {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 2px;
  width: 100%;
  margin-top: 8px;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: rgba(255, 255, 255, 0.018);
}

.segmented button {
  width: 100%;
  min-width: 0;
  height: 25px;
  padding: 0 3px;
  cursor: pointer;
  color: var(--faint);
  border: 0;
  border-radius: 6px;
  background: transparent;
  font-family: var(--mono);
  font-size: 8.5px;
  font-variant-numeric: tabular-nums;
  transition:
    color 160ms ease,
    background 160ms ease;
}

.segmented button:hover {
  color: var(--ink);
}

.segmented button.is-active {
  color: #0b100b;
  background: var(--acid);
}

.side-section {
  position: relative;
  padding: 17px 0 20px;
  border-bottom: 1px solid var(--line);
}

.side-section:last-of-type {
  border-bottom: 0;
}

.section-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
  color: var(--ink);
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.01em;
}

.section-meta {
  color: var(--faint);
  font-family: var(--mono);
  font-size: 7.5px;
  font-weight: 400;
  letter-spacing: 0.05em;
}

.slider-control {
  display: block;
  margin-bottom: 17px;
}

.slider-control:last-of-type {
  margin-bottom: 9px;
}

.slider-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 9px;
  color: var(--muted);
  font-size: 10px;
}

.slider-head small {
  margin-left: 3px;
  color: var(--faint);
  font-size: 8px;
}

.slider-head output {
  color: var(--acid);
  font-family: var(--mono);
  font-size: 10px;
  font-variant-numeric: tabular-nums;
}

input[type="range"] {
  display: block;
  width: 100%;
  height: 16px;
  margin: 0;
  padding: 0;
  cursor: pointer;
  appearance: none;
  background: transparent;
}

input[type="range"]::-webkit-slider-runnable-track {
  width: 100%;
  height: 2px;
  border-radius: 3px;
  background: linear-gradient(
    90deg,
    var(--acid) 0%,
    var(--acid) var(--fill, 50%),
    rgba(227, 243, 227, 0.12) var(--fill, 50%),
    rgba(227, 243, 227, 0.12) 100%
  );
}

input[type="range"]::-moz-range-track {
  width: 100%;
  height: 2px;
  border-radius: 3px;
  background: rgba(227, 243, 227, 0.12);
}

input[type="range"]::-moz-range-progress {
  height: 2px;
  border-radius: 3px;
  background: var(--acid);
}

input[type="range"]::-webkit-slider-thumb {
  width: 11px;
  height: 11px;
  margin-top: -4.5px;
  cursor: pointer;
  appearance: none;
  border: 2px solid #0a0d0b;
  border-radius: 50%;
  background: var(--acid);
  box-shadow: 0 0 0 1px var(--acid), 0 0 10px rgba(213, 255, 117, 0.35);
}

input[type="range"]::-moz-range-thumb {
  width: 8px;
  height: 8px;
  cursor: pointer;
  border: 2px solid #0a0d0b;
  border-radius: 50%;
  background: var(--acid);
  box-shadow: 0 0 0 1px var(--acid);
}

.slider-scale {
  display: flex;
  justify-content: space-between;
  margin-top: 5px;
  color: var(--faint);
  font-size: 7.5px;
}

.toggle-list {
  border-top: 1px solid rgba(225, 242, 226, 0.065);
}

.toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  padding: 10px 0 0;
  cursor: pointer;
  text-align: left;
  color: var(--muted);
  border: 0;
  background: transparent;
}

.toggle-row:first-child {
  padding-top: 12px;
}

.toggle-copy {
  display: flex;
  flex-direction: column;
  gap: 2px;
  font-size: 10px;
}

.toggle-copy small {
  color: var(--faint);
  font-family: var(--mono);
  font-size: 7px;
  letter-spacing: 0.005em;
}

.toggle-track {
  position: relative;
  flex: 0 0 auto;
  width: 30px;
  height: 16px;
  border: 1px solid var(--line-strong);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.045);
  transition:
    border-color 180ms ease,
    background 180ms ease;
}

.toggle-track i {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--faint);
  transition:
    left 190ms var(--ease),
    background 180ms ease,
    box-shadow 180ms ease;
}

.toggle-row[aria-checked="true"] .toggle-track {
  border-color: rgba(213, 255, 117, 0.42);
  background: rgba(213, 255, 117, 0.12);
}

.toggle-row[aria-checked="true"] .toggle-track i {
  left: 17px;
  background: var(--acid);
  box-shadow: 0 0 9px rgba(213, 255, 117, 0.45);
}

.toggle-row:hover .toggle-track {
  border-color: var(--line-strong);
}

.chart-legend {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--faint);
  font-family: var(--mono);
  font-size: 7.5px;
  font-weight: 400;
}

.chart-legend i {
  display: inline-block;
  width: 10px;
  height: 2px;
  margin-left: 2px;
  border-radius: 1px;
}

.chart-legend i.pop {
  background: var(--acid);
}

.chart-legend i.energy {
  background: var(--mint);
}

.chart-wrap {
  position: relative;
  height: 102px;
  margin: 0 0 11px;
  overflow: hidden;
  border-top: 1px solid rgba(225, 242, 226, 0.06);
  border-bottom: 1px solid rgba(225, 242, 226, 0.06);
  background:
    linear-gradient(rgba(225, 242, 226, 0.032) 1px, transparent 1px) 0 0 / 100% 25%,
    linear-gradient(90deg, rgba(225, 242, 226, 0.025) 1px, transparent 1px) 0 0 / 25% 100%;
}

#pulseChart {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
}

.chart-max {
  position: absolute;
  top: 6px;
  right: 5px;
  color: var(--faint);
  font-family: var(--mono);
  font-size: 7px;
  letter-spacing: 0.02em;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--line);
}

.metric-grid > div {
  min-width: 0;
  padding: 8px 8px 7px;
  background: rgba(13, 18, 14, 0.8);
}

.metric-grid span {
  display: block;
  margin-bottom: 3px;
  overflow: hidden;
  color: var(--faint);
  font-size: 8px;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.metric-grid strong {
  display: block;
  overflow: hidden;
  color: var(--ink);
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.mini-stats {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-top: 9px;
  color: var(--faint);
  font-family: var(--mono);
  font-size: 7.5px;
  white-space: nowrap;
}

.mini-stats strong {
  margin-left: 2px;
  color: var(--muted);
  font-weight: 400;
  font-variant-numeric: tabular-nums;
}

.leader-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.leader-row {
  display: grid;
  grid-template-columns: 18px 8px minmax(0, 1fr) auto;
  gap: 8px;
  align-items: center;
  min-height: 36px;
  padding: 6px 5px;
  cursor: pointer;
  text-align: left;
  color: var(--muted);
  border: 0;
  border-radius: 7px;
  background: transparent;
  transition:
    color 160ms ease,
    background 160ms ease;
}

.leader-row:hover {
  color: var(--ink);
  background: rgba(225, 242, 226, 0.04);
}

.leader-rank {
  color: var(--faint);
  font-family: var(--mono);
  font-size: 8px;
  font-variant-numeric: tabular-nums;
}

.leader-rank.is-first {
  color: var(--acid);
}

.leader-swatch {
  width: 5px;
  height: 17px;
  border-radius: 2px;
  background: var(--line-strong);
}

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

.leader-id {
  overflow: hidden;
  color: var(--ink);
  font-family: var(--mono);
  font-size: 9px;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.leader-meta {
  overflow: hidden;
  color: var(--faint);
  font-family: var(--mono);
  font-size: 7px;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.leader-value {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 8.5px;
  font-variant-numeric: tabular-nums;
  text-align: right;
  white-space: nowrap;
}

.leader-value small {
  display: block;
  margin-top: 2px;
  color: var(--faint);
  font-size: 7px;
}

.leader-empty {
  padding: 14px 5px;
  color: var(--faint);
  font-family: var(--mono);
  font-size: 8px;
}

.live-label {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--coral);
  font-family: var(--mono);
  font-size: 7px;
  font-weight: 400;
  letter-spacing: 0.08em;
}

.live-label i {
  width: 4px;
  height: 4px;
  animation: status-pulse 2s ease-in-out infinite;
}

.event-feed {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.event-item {
  display: grid;
  grid-template-columns: 37px 8px minmax(0, 1fr);
  gap: 7px;
  align-items: baseline;
  min-height: 25px;
  padding: 4px 0;
  border-bottom: 1px solid rgba(225, 242, 226, 0.05);
  color: var(--muted);
  font-size: 8.5px;
  line-height: 1.45;
}

.event-item.is-new {
  animation: event-in 260ms var(--ease);
}

.event-item:last-child {
  border-bottom: 0;
}

@keyframes event-in {
  from {
    opacity: 0;
    transform: translateY(-2px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.event-time {
  color: var(--faint);
  font-family: var(--mono);
  font-size: 7px;
  font-variant-numeric: tabular-nums;
}

.event-dot {
  display: inline-block;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--muted);
}

.event-dot.birth {
  background: var(--acid);
}

.event-dot.death {
  background: var(--faint);
}

.event-dot.kill {
  background: var(--coral);
}

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

.event-dot.system {
  background: var(--mint);
}

.event-dot.conflict {
  background: var(--coral);
  box-shadow: 0 0 8px rgba(255, 142, 127, 0.42);
}

.event-copy b {
  color: var(--ink);
  font-family: var(--mono);
  font-size: 8.5px;
  font-weight: 400;
}

.event-copy small {
  color: var(--faint);
  font-size: 8px;
}

.event-empty {
  padding: 8px 0 4px;
  color: var(--faint);
  font-family: var(--mono);
  font-size: 8px;
}

.sidebar-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: auto;
  padding: 16px 0 12px;
  border-top: 1px solid var(--line);
}

.sidebar-credit {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 0 0 16px;
  color: var(--faint);
  font-family: var(--mono);
  font-size: 7px;
  letter-spacing: 0.02em;
}

.sidebar-credit a {
  color: var(--faint);
  text-decoration: none;
  transition: color 160ms ease;
}

.sidebar-credit a:hover {
  color: var(--acid);
}

.foot-status {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--faint);
  font-family: var(--mono);
  font-size: 7.5px;
  letter-spacing: 0.015em;
}

.neural-indicator {
  width: 4px;
  height: 4px;
  color: var(--acid);
  background: var(--acid);
}

.neural-indicator.is-off {
  color: var(--faint);
  background: var(--faint);
  box-shadow: none;
}

.seed-chip {
  overflow: hidden;
  max-width: 145px;
  padding: 4px 6px;
  cursor: pointer;
  color: var(--faint);
  border: 1px solid transparent;
  border-radius: 5px;
  background: transparent;
  font-family: var(--mono);
  font-size: 7.5px;
  letter-spacing: 0.02em;
  text-overflow: ellipsis;
  white-space: nowrap;
  transition:
    color 160ms ease,
    border-color 160ms ease;
}

.seed-chip:hover {
  color: var(--muted);
  border-color: var(--line);
}

/* ---------------------------------------------------------------- modal */

.modal-shell {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  padding: 24px;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(3, 6, 4, 0.76);
  backdrop-filter: blur(8px);
  animation: fade-in 220ms ease;
}

.help-modal {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  width: min(960px, 100%);
  max-height: min(88dvh, 780px);
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: 22px;
  background:
    radial-gradient(90% 80% at 8% 0%, rgba(94, 124, 84, 0.11), transparent 52%),
    #0b100c;
  box-shadow:
    0 40px 100px rgba(0, 0, 0, 0.52),
    inset 0 1px 0 rgba(255, 255, 255, 0.045);
  animation: modal-in 300ms var(--ease);
}

@keyframes modal-in {
  from {
    opacity: 0;
    transform: translateY(10px) scale(0.985);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes fade-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.help-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  padding: 25px 27px 18px;
  border-bottom: 1px solid var(--line);
}

.help-head h2 {
  margin: 0;
  font-size: 23px;
  font-weight: 480;
  letter-spacing: -0.035em;
}

.help-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  overflow-y: auto;
  background: var(--line);
  scrollbar-width: thin;
  scrollbar-color: rgba(213, 255, 117, 0.25) transparent;
  scrollbar-gutter: stable;
  overscroll-behavior: contain;
}

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

.help-grid::-webkit-scrollbar-track {
  background: rgba(225, 242, 226, 0.035);
}

.help-grid::-webkit-scrollbar-thumb {
  border: 1px solid #0c110d;
  border-radius: 4px;
  background: rgba(213, 255, 117, 0.32);
}

.help-card {
  padding: 21px 24px 22px;
  background: #0c110d;
}

.help-card.help-wide {
  grid-column: 1 / -1;
}

.help-index {
  display: block;
  margin-bottom: 9px;
  color: var(--acid);
  font-family: var(--mono);
  font-size: 7.5px;
  letter-spacing: 0.12em;
}

.help-card h3 {
  margin: 0 0 9px;
  color: var(--ink);
  font-size: 14px;
  font-weight: 510;
  letter-spacing: -0.015em;
}

.help-card p {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 10.5px;
  line-height: 1.75;
}

.help-card p:last-child {
  margin-bottom: 0;
}

.help-card strong {
  color: var(--ink);
  font-weight: 500;
}

.help-fine {
  color: var(--faint) !important;
  font-size: 9px !important;
  line-height: 1.65 !important;
}

.formula-row {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin: 12px 0 10px;
}

.formula-row code {
  padding: 6px 8px;
  color: var(--mint);
  border: 1px solid rgba(112, 233, 193, 0.16);
  border-radius: 6px;
  background: rgba(112, 233, 193, 0.045);
  font-family: var(--mono);
  font-size: 9px;
  white-space: nowrap;
}

.architecture {
  display: flex;
  align-items: center;
  gap: 7px;
  margin-top: 13px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 8px;
}

.architecture span {
  padding: 5px 7px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: rgba(255, 255, 255, 0.02);
  white-space: nowrap;
}

.architecture i {
  width: 14px;
  height: 1px;
  background: rgba(213, 255, 117, 0.3);
}

.distance-rule {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin: 12px 0 9px;
  padding: 9px 11px;
  border: 1px solid rgba(225, 242, 226, 0.08);
  border-radius: 7px;
  background: rgba(255, 255, 255, 0.018);
  color: var(--muted);
  font-size: 9px;
  line-height: 1.55;
}

.distance-rule span {
  display: flex;
  align-items: flex-start;
  gap: 7px;
}

.distance-rule-dot {
  flex: 0 0 auto;
  width: 5px;
  height: 5px;
  margin-top: 4px;
  border-radius: 50%;
}

.distance-rule-dot.near {
  background: var(--acid);
  box-shadow: 0 0 7px rgba(213, 255, 117, 0.45);
}

.distance-rule-dot.far {
  background: var(--coral);
  box-shadow: 0 0 7px rgba(255, 142, 127, 0.4);
}

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

.help-controls .help-index {
  width: 100%;
  margin-bottom: 0;
}

.help-controls .help-fine {
  flex: 1 0 100%;
  margin-top: 1px;
}

.shortcut-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 7px 17px;
  color: var(--muted);
  font-size: 9px;
}

.shortcut-grid span {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

kbd {
  display: inline-flex;
  min-width: 17px;
  height: 17px;
  padding: 0 4px;
  align-items: center;
  justify-content: center;
  color: var(--ink);
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.03);
  font-family: var(--mono);
  font-size: 7.5px;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.03);
}

.help-scroll-cue {
  position: absolute;
  right: 8px;
  bottom: 44px;
  left: 1px;
  z-index: 2;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  height: 38px;
  padding-bottom: 7px;
  pointer-events: none;
  color: rgba(213, 255, 117, 0.7);
  background: linear-gradient(180deg, transparent, rgba(11, 16, 12, 0.97) 72%);
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.07em;
}

.help-scroll-cue.is-hidden {
  display: none;
}

.help-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 15px;
  padding: 14px 27px;
  border-top: 1px solid var(--line);
  color: var(--faint);
  font-family: var(--mono);
  font-size: 7.5px;
  letter-spacing: 0.05em;
}

/* ---------------------------------------------------------------- toast */

.toast {
  position: fixed;
  z-index: 150;
  left: 50%;
  bottom: 26px;
  max-width: min(420px, calc(100vw - 32px));
  padding: 9px 14px;
  pointer-events: none;
  color: #0c110c;
  border: 1px solid var(--acid);
  border-radius: 8px;
  background: var(--acid);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.28);
  font-size: 10px;
  font-weight: 520;
  line-height: 1.4;
  opacity: 0;
  transform: translate(-50%, 8px);
  transition:
    opacity 180ms ease,
    transform 220ms var(--ease);
}

.toast.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

/* ---------------------------------------------------------------- responsive */

@media (max-width: 1260px) {
  .app-shell {
    grid-template-columns: minmax(0, 1fr) 350px;
  }

  .sidebar {
    padding-right: 18px;
    padding-left: 18px;
  }

  .stage-header {
    right: 22px;
    left: 24px;
  }

  .stage-bottom {
    right: 22px;
    left: 24px;
  }

  .view-tools {
    right: 22px;
  }

  .specimen-card {
    left: 24px;
    width: min(370px, calc(100% - 48px));
  }

  .specimen-card.is-right {
    right: 24px;
    left: auto;
  }

  .stage.has-right-card .view-tools {
    left: 24px;
  }

  .stage-stat {
    min-width: 72px;
    padding-right: 12px;
    padding-left: 12px;
  }
}

@media (max-width: 1080px) {
  .brand-subtitle {
    display: none;
  }

  .run-state {
    display: none;
  }

  .legend {
    display: none;
  }

  .caption-index {
    display: none;
  }
}

@media (max-width: 900px) {
  body {
    overflow: hidden;
  }

  .app-shell {
    grid-template-columns: 1fr;
    grid-template-rows: minmax(400px, 60dvh) minmax(0, 1fr);
    min-height: 0;
  }

  .stage {
    min-height: 0;
  }

  .sidebar {
    border-top: 1px solid var(--line);
    border-left: 0;
    padding-top: 17px;
    padding-bottom: 0;
  }

  .sidebar-head {
    display: none;
  }

  .transport {
    margin-bottom: 13px;
  }

  .transport,
  .speed-row {
    max-width: none;
  }

  .run-button {
    min-height: 56px;
  }

  .sidebar-foot {
    padding-bottom: max(16px, env(safe-area-inset-bottom));
  }

  .stage-header {
    top: 17px;
    left: 18px;
    right: 16px;
    gap: 12px;
  }

  .brand-mark {
    flex-basis: 38px;
    width: 38px;
    height: 38px;
  }

  .brand-mark svg {
    width: 31px;
    height: 31px;
  }

  .brand h1 {
    font-size: 21px;
  }

  .brand .eyebrow {
    font-size: 7px;
  }

  .stage-stats {
    min-height: 46px;
  }

  .stage-stat {
    min-width: 58px;
    padding: 7px 9px;
  }

  .stage-stat-label {
    font-size: 7.5px;
  }

  .stage-stat strong {
    font-size: 13px;
  }

  .run-state {
    display: none;
  }

  .stage-bottom {
    right: 18px;
    bottom: 14px;
    left: 18px;
  }

  .stage-caption {
    gap: 8px;
  }

  .caption-copy {
    max-width: 58vw;
    overflow: hidden;
    font-size: 8.5px;
    text-overflow: ellipsis;
  }

  .view-tools {
    right: 16px;
    bottom: 44px;
  }

  .specimen-card {
    bottom: 49px;
    left: 16px;
    width: min(365px, calc(100% - 32px));
    max-height: calc(100% - 130px);
  }

  .specimen-card.is-right {
    right: auto;
    left: 16px;
  }

  .stage.has-right-card .view-tools {
    right: 16px;
    left: auto;
  }

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

  .help-card.help-wide {
    grid-column: auto;
  }
}

@media (max-width: 600px) {
  .app-shell {
    grid-template-rows: minmax(340px, 54dvh) minmax(0, 1fr);
  }

  .brand-mark {
    display: none;
  }

  .brand h1 {
    font-size: 19px;
  }

  .brand .eyebrow {
    display: none;
  }

  .stage-stat {
    padding: 6px 8px;
  }

  .stage-stat strong {
    font-size: 12px;
  }

  .caption-index {
    display: none;
  }

  .sidebar {
    padding-right: 16px;
    padding-left: 16px;
  }

  .specimen-card {
    max-height: calc(100% - 94px);
    padding: 14px;
  }

  .stage-bottom {
    display: none;
  }

  .modal-shell {
    padding: 10px;
  }

  .help-modal {
    max-height: 92dvh;
  }

  .help-head {
    padding: 18px 18px 14px;
  }

  .help-card {
    padding: 17px 18px;
  }

  .help-foot {
    padding: 12px 18px;
  }

  .empty-card {
    padding: 22px;
  }

  .empty-card h2 {
    font-size: 23px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.0001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.0001ms !important;
  }
}