:root {
  --paper: #f7f4ea;
  --ink: #1d211d;
  --muted: #667066;
  --line: rgba(29, 33, 29, 0.2);
  --accent: #df3f2d;
  --mint: #1d9a78;
  --blue: #2774a9;
  --gold: #c99821;
  color-scheme: light;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  background: var(--paper);
  color: var(--ink);
  touch-action: none;
  user-select: none;
}

button {
  color: inherit;
  font: inherit;
}

.shell {
  position: relative;
  width: 100vw;
  height: 100svh;
  overflow: hidden;
  background:
    linear-gradient(rgba(29, 33, 29, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(29, 33, 29, 0.035) 1px, transparent 1px),
    var(--paper);
  background-size: 42px 42px;
}

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

.menu,
.summary {
  position: absolute;
  inset: 0;
  display: grid;
  align-content: center;
  justify-items: center;
  gap: clamp(18px, 4vw, 32px);
  padding: max(18px, env(safe-area-inset-top)) max(18px, env(safe-area-inset-right))
    max(18px, env(safe-area-inset-bottom)) max(18px, env(safe-area-inset-left));
  pointer-events: none;
}

.menu {
  overflow-y: auto;
  touch-action: pan-y;
}

.brand,
.panel,
.hud {
  pointer-events: auto;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  width: min(92vw, 440px);
}

.brand-mark {
  width: 54px;
  height: 54px;
  border: 2px solid var(--ink);
  border-radius: 999px;
  box-shadow:
    inset 0 0 0 10px var(--paper),
    inset 0 0 0 14px var(--accent);
}

.eyebrow,
.mode-label {
  margin: 0 0 5px;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 760;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2 {
  margin: 0;
  font-size: clamp(2.4rem, 8vw, 5.4rem);
  line-height: 0.92;
  letter-spacing: 0;
}

h2 {
  font-size: clamp(2rem, 7vw, 4rem);
}

.panel {
  width: min(92vw, 440px);
  padding: 18px;
  border: 2px solid var(--ink);
  border-radius: 8px;
  background: rgba(247, 244, 234, 0.9);
  box-shadow: 8px 8px 0 rgba(29, 33, 29, 0.1);
}

.menu-panel {
  width: min(96vw, 960px);
}

.menu-columns {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(300px, 0.9fr);
  gap: 16px;
  align-items: start;
}

.setup-column,
.custom-column {
  display: grid;
  gap: 12px;
  min-width: 0;
}

.menu-actions {
  display: grid;
  gap: 10px;
}

.segmented {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 2px solid var(--ink);
  border-radius: 8px;
  overflow: hidden;
}

.duration {
  min-height: 46px;
  border: 0;
  border-right: 2px solid var(--ink);
  background: transparent;
  font-weight: 820;
  cursor: pointer;
}

.duration:last-child {
  border-right: 0;
}

.duration.is-active {
  background: var(--ink);
  color: var(--paper);
}

.start {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  min-height: 54px;
  margin-top: 14px;
  border: 2px solid var(--ink);
  border-radius: 8px;
  background: var(--accent);
  color: #fffaf1;
  font-size: 1rem;
  font-weight: 880;
  cursor: pointer;
}

.run-lab {
  display: grid;
  gap: 12px;
}

.choice-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
}

.binary-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 6px;
}

.choice {
  min-height: 38px;
  border: 2px solid var(--ink);
  border-radius: 8px;
  background: transparent;
  font-size: 0.82rem;
  font-weight: 820;
  cursor: pointer;
}

.choice.is-active {
  background: var(--ink);
  color: var(--paper);
}

.compact-select {
  display: none;
  width: 100%;
  min-height: 38px;
  border: 2px solid var(--ink);
  border-radius: 8px;
  background: rgba(247, 244, 234, 0.78);
  color: var(--ink);
  font: inherit;
  font-size: 0.86rem;
  font-weight: 820;
  padding: 0 9px;
}

.option-group {
  width: 100%;
  min-width: 0;
  max-width: 100%;
  border: 2px solid var(--ink);
  border-radius: 8px;
  background: rgba(247, 244, 234, 0.54);
}

.option-group > summary {
  display: none;
}

.option-group-body {
  padding: 0;
}

.customizer {
  display: grid;
  grid-template-columns: 1.1fr 1fr 1fr;
  gap: 10px;
  align-items: end;
  min-width: 0;
}

.run-lab > *,
.customizer > * {
  min-width: 0;
}

.name-field {
  display: grid;
  gap: 5px;
}

.name-field span {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 760;
  letter-spacing: 0;
  text-transform: uppercase;
}

.name-field input {
  width: 100%;
  min-height: 42px;
  border: 2px solid var(--ink);
  border-radius: 8px;
  background: transparent;
  color: var(--ink);
  font: inherit;
  font-weight: 820;
  padding: 0 10px;
  text-transform: uppercase;
}

.swatches,
.marks {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 6px;
}

.marks {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.swatch,
.mark {
  display: grid;
  place-items: center;
  height: 42px;
  border: 2px solid var(--ink);
  border-radius: 8px;
  background: transparent;
  cursor: pointer;
}

.swatch::before {
  content: "";
  width: 20px;
  height: 20px;
  border: 2px solid var(--ink);
  border-radius: 999px;
  background: var(--swatch);
}

.swatch.is-active,
.mark.is-active {
  background: var(--ink);
  color: var(--paper);
}

.swatch.is-active::before {
  border-color: var(--paper);
}

.mark span {
  width: 20px;
  height: 20px;
}

.mark-orbit {
  border: 2px solid currentColor;
  border-radius: 999px;
  box-shadow: inset 0 0 0 5px transparent;
}

.mark-spark {
  position: relative;
}

.mark-spark::before,
.mark-spark::after {
  content: "";
  position: absolute;
  inset: 2px 8px;
  background: currentColor;
}

.mark-spark::after {
  transform: rotate(90deg);
}

.mark-core {
  border: 2px solid currentColor;
  border-radius: 999px;
  box-shadow: inset 0 0 0 5px currentColor;
}

.play-icon,
.replay-icon,
.stop-icon {
  position: relative;
  display: inline-block;
  width: 18px;
  height: 18px;
}

.play-icon::before {
  content: "";
  position: absolute;
  inset: 2px 1px 2px 4px;
  clip-path: polygon(0 0, 100% 50%, 0 100%);
  background: currentColor;
}

.replay-icon {
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
}

.replay-icon::after {
  content: "";
  position: absolute;
  top: -4px;
  right: -2px;
  width: 7px;
  height: 7px;
  border-top: 2px solid currentColor;
  border-right: 2px solid currentColor;
  transform: rotate(32deg);
}

.concepts {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.concepts article {
  display: grid;
  gap: 2px;
  padding-top: 10px;
  border-top: 1px solid var(--line);
}

.concepts strong {
  font-size: 0.9rem;
}

.concepts span,
#result-copy {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.4;
}

.hud {
  position: absolute;
  top: max(12px, env(safe-area-inset-top));
  left: max(12px, env(safe-area-inset-left));
  right: max(12px, env(safe-area-inset-right));
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr)) minmax(92px, 0.72fr);
  gap: 8px;
  align-items: center;
}

.hud > div,
.stop-button,
.stats > div {
  min-height: 42px;
  border: 2px solid var(--ink);
  border-radius: 8px;
  background: rgba(247, 244, 234, 0.78);
  backdrop-filter: blur(10px);
}

.hud > div,
.stats > div {
  display: grid;
  align-content: center;
  padding: 5px 9px;
}

.hud span,
.stats span {
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 760;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hud strong,
.stats strong {
  overflow: hidden;
  font-size: clamp(0.92rem, 3vw, 1.18rem);
  line-height: 1.1;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.boost-card {
  position: relative;
}

.boost-card strong {
  color: var(--blue);
}

.boost-card.is-live strong {
  color: var(--mint);
}

.stop-button,
.secondary-action {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 42px;
  border: 2px solid var(--ink);
  border-radius: 8px;
  background: var(--accent);
  color: #fffaf1;
  font-weight: 880;
  cursor: pointer;
}

.surprise-action {
  margin-top: 0;
}

.stop-icon::before {
  content: "";
  position: absolute;
  inset: 3px;
  background: currentColor;
}

.pause-menu,
.summary {
  background: rgba(247, 244, 234, 0.42);
  backdrop-filter: blur(8px);
}

.pause-menu {
  position: absolute;
  inset: 0;
  display: grid;
  align-content: center;
  justify-items: center;
  padding: max(18px, env(safe-area-inset-top)) max(18px, env(safe-area-inset-right))
    max(18px, env(safe-area-inset-bottom)) max(18px, env(safe-area-inset-left));
  pointer-events: none;
}

.pause-actions {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 14px;
}

.secondary-action {
  width: 100%;
  margin-top: 10px;
  background: transparent;
  color: var(--ink);
}

.pause-actions .secondary-action {
  margin-top: 0;
}

.strong-action {
  background: var(--ink);
  color: var(--paper);
}

.is-hidden {
  display: none;
}

@media (max-width: 540px) {
  .menu,
  .pause-menu,
  .summary {
    align-content: end;
    gap: 10px;
  }

  .brand {
    display: none;
  }

  .panel {
    padding: 10px;
    width: min(94vw, 540px);
  }

  .menu-columns {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .setup-column,
  .custom-column {
    gap: 8px;
  }

  .run-lab {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .choice-grid {
    display: none;
  }

  .compact-select {
    display: block;
  }

  .mode-label,
  .name-field span {
    font-size: 0.7rem;
  }

  .option-group {
    background: rgba(247, 244, 234, 0.7);
  }

  .option-group > summary {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 10px;
    align-items: center;
    min-height: 44px;
    padding: 0 10px;
    cursor: pointer;
    list-style: none;
  }

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

  .option-group > summary span {
    color: var(--muted);
    font-size: 0.72rem;
    font-weight: 760;
    text-transform: uppercase;
  }

  .option-group > summary strong {
    max-width: 100%;
    overflow: hidden;
    font-size: 0.9rem;
    text-align: right;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .option-group-body {
    display: none;
    padding: 0 10px 10px;
    border-top: 1px solid var(--line);
  }

  .option-group[open] .option-group-body {
    display: block;
  }

  .hud {
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
  }

  .stop-button {
    grid-column: 1 / -1;
    min-height: 48px;
  }

  .customizer {
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }

  .name-field {
    grid-column: 1 / -1;
  }

  .name-field input,
  .swatch,
  .mark {
    min-height: 38px;
    height: 38px;
  }

  .start {
    min-height: 50px;
    margin-top: 0;
  }

  .surprise-action {
    min-height: 40px;
    margin-top: 8px;
  }

  .concepts {
    display: none;
  }
}

@media (max-width: 380px) {
  .menu,
  .pause-menu,
  .summary {
    padding: max(8px, env(safe-area-inset-top)) max(8px, env(safe-area-inset-right))
      max(8px, env(safe-area-inset-bottom)) max(8px, env(safe-area-inset-left));
    gap: 8px;
  }

  .panel,
  .menu-panel,
  .pause-menu .panel,
  .summary .panel {
    width: min(90vw, 352px);
  }

  .menu-panel {
    max-height: calc(100svh - 16px);
    overflow-y: auto;
  }

  .panel {
    padding: 8px;
    box-shadow: 5px 5px 0 rgba(29, 33, 29, 0.08);
  }

  .mode-label,
  .name-field span,
  .option-group > summary span,
  .hud span,
  .stats span {
    font-size: 0.64rem;
  }

  .duration,
  .choice,
  .compact-select {
    min-height: 36px;
    font-size: 0.76rem;
  }

  .option-group > summary {
    grid-template-columns: 1fr;
    gap: 3px;
    align-items: start;
    min-height: 0;
    padding: 8px 10px;
  }

  .option-group > summary strong {
    width: 100%;
    font-size: 0.86rem;
    line-height: 1.2;
    text-align: left;
  }

  .option-group-body {
    padding: 0 8px 8px;
  }

  .customizer {
    gap: 6px;
  }

  .swatches,
  .marks,
  .binary-grid {
    gap: 5px;
  }

  .name-field input,
  .swatch,
  .mark {
    min-height: 36px;
    height: 36px;
  }

  .swatch::before,
  .mark span {
    width: 18px;
    height: 18px;
  }

  .start,
  .secondary-action,
  .surprise-action {
    min-height: 44px;
    font-size: 0.94rem;
  }

  .start {
    gap: 8px;
  }

  .play-icon,
  .replay-icon,
  .stop-icon {
    width: 16px;
    height: 16px;
  }

  .hud {
    top: max(8px, env(safe-area-inset-top));
    left: max(8px, env(safe-area-inset-left));
    right: max(8px, env(safe-area-inset-right));
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 5px;
  }

  .hud > div,
  .stop-button,
  .stats > div {
    min-height: 38px;
  }

  .hud > div,
  .stats > div {
    padding: 4px 7px;
  }

  .hud strong,
  .stats strong {
    font-size: 0.84rem;
  }

  .stop-button {
    grid-column: 1 / -1;
    min-height: 44px;
  }

  .pause-menu,
  .summary {
    align-content: end;
  }

  .pause-menu .panel,
  .summary .panel {
    padding: 12px 10px;
  }

  .pause-actions,
  .stats {
    gap: 8px;
    margin-top: 10px;
  }

  h2 {
    font-size: clamp(1.7rem, 10vw, 2.5rem);
  }
}

@media (max-height: 760px) {
  .menu {
    align-content: center;
    gap: 8px;
  }

  .brand {
    display: none;
  }

  .panel {
    padding: 10px;
  }

  .menu-panel {
    width: min(96vw, 860px);
  }

  .menu-columns {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .run-lab {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .choice-grid {
    display: none;
  }

  .compact-select {
    display: block;
  }

  .option-group > summary {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 10px;
    align-items: center;
    min-height: 44px;
    padding: 0 10px;
    cursor: pointer;
    list-style: none;
  }

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

  .option-group > summary span {
    color: var(--muted);
    font-size: 0.72rem;
    font-weight: 760;
    text-transform: uppercase;
  }

  .option-group > summary strong {
    max-width: 100%;
    overflow: hidden;
    font-size: 0.9rem;
    text-align: right;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .option-group-body {
    display: none;
    padding: 0 10px 10px;
    border-top: 1px solid var(--line);
  }

  .option-group[open] .option-group-body {
    display: block;
  }

  .customizer {
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }

  .name-field {
    grid-column: 1 / -1;
  }

  .name-field input,
  .swatch,
  .mark {
    min-height: 38px;
    height: 38px;
  }

  .start {
    min-height: 50px;
    margin-top: 0;
  }

  .surprise-action {
    min-height: 40px;
    margin-top: 8px;
  }

  .concepts {
    display: none;
  }
}

@media (max-width: 900px) {
  .menu-panel {
    width: min(96vw, 720px);
  }

  .menu-columns {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .run-lab {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 901px) and (min-height: 761px) {
  .option-group {
    border: 0;
    background: transparent;
  }

  .option-group > summary {
    display: none;
  }

  .option-group-body {
    display: block;
    padding: 0;
    border-top: 0;
  }
}

@media (max-width: 380px) {
  .menu,
  .pause-menu,
  .summary {
    padding: max(8px, env(safe-area-inset-top)) max(8px, env(safe-area-inset-right))
      max(8px, env(safe-area-inset-bottom)) max(8px, env(safe-area-inset-left));
  }

  .panel,
  .menu-panel,
  .pause-menu .panel,
  .summary .panel {
    width: min(94vw, 352px);
  }

  .menu-columns,
  .run-lab {
    grid-template-columns: 1fr;
  }

  .menu-panel {
    max-height: calc(100svh - 16px);
    overflow-y: auto;
  }

  .option-group > summary {
    grid-template-columns: 1fr;
    gap: 3px;
    align-items: start;
    min-height: 0;
    padding: 8px 10px;
  }

  .option-group > summary strong {
    width: 100%;
    font-size: 0.86rem;
    line-height: 1.2;
    text-align: left;
    white-space: normal;
    overflow-wrap: anywhere;
  }

  .custom-column,
  .setup-column,
  .option-group,
  .option-group-body,
  .customizer,
  .run-lab,
  .swatches,
  .marks {
    max-width: 100%;
    min-width: 0;
  }

  .hud {
    top: max(8px, env(safe-area-inset-top));
    left: max(8px, env(safe-area-inset-left));
    right: max(8px, env(safe-area-inset-right));
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) minmax(82px, 0.74fr);
    grid-template-areas:
      "time time stop"
      "mass rank boost"
      "run run run";
    gap: 5px;
  }

  .mass-card {
    grid-area: mass;
  }

  .rank-card {
    grid-area: rank;
  }

  .time-card {
    grid-area: time;
  }

  .run-card {
    grid-area: run;
  }

  .boost-card {
    grid-area: boost;
  }

  .stop-button {
    grid-area: stop;
    grid-column: auto;
    min-height: 40px;
  }

  .hud > div,
  .stats > div {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    align-items: center;
    align-content: stretch;
    column-gap: 6px;
    min-height: 40px;
    padding: 4px 7px;
  }

  .hud span,
  .stats span {
    font-size: 0.62rem;
  }

  .hud strong,
  .stats strong {
    font-size: 0.96rem;
    text-align: right;
  }

  .time-card strong {
    font-size: 1.22rem;
  }

  .run-card strong {
    font-size: 0.9rem;
  }

  .boost-card strong {
    font-size: 0.82rem;
  }

  .pause-menu,
  .summary {
    align-content: end;
  }

  .summary .panel {
    padding: 10px;
  }

  .summary .eyebrow {
    margin-bottom: 3px;
  }

  #result-copy {
    margin: 8px 0 0;
    font-size: 0.82rem;
    line-height: 1.28;
  }

  .summary .stats {
    gap: 6px;
    margin-top: 9px;
  }

  .summary .stats > div {
    min-height: 46px;
  }

  .summary .stats strong {
    font-size: 1.06rem;
  }

  .summary #again,
  .summary #summary-menu {
    margin-top: 8px;
    min-height: 42px;
  }

  .summary #again {
    margin-top: 10px;
  }

  .summary h2 {
    font-size: 1.85rem;
    line-height: 1;
  }
}

@media (max-width: 380px) and (min-height: 600px) {
  .summary {
    align-content: center;
  }
}

@media (max-width: 340px) {
  .summary .panel {
    padding: 9px;
  }

  #result-copy {
    font-size: 0.78rem;
  }

  .summary .stats {
    grid-template-columns: 1fr 1fr;
  }

  .summary #again,
  .summary #summary-menu {
    min-height: 40px;
    font-size: 0.9rem;
  }
}