:root {
  color-scheme: dark;
  --paper: #f8f5ff;
  --muted: #c9c1da;
  --night: #0d0b16;
  --night-soft: #171224;
  --panel: rgba(27, 21, 42, 0.92);
  --panel-soft: rgba(41, 31, 61, 0.72);
  --line: rgba(238, 229, 255, 0.2);
  --line-strong: rgba(238, 229, 255, 0.42);
  --violet: #c4b5fd;
  --rose: #f9a8d4;
  --peach: #fdba9a;
  --mint: #a7f3d0;
  --gold: #fde68a;
  --focus: #ffffff;
  --shadow: rgba(0, 0, 0, 0.28);
}

* {
  box-sizing: border-box;
}

html {
  min-width: 18rem;
  background: var(--night);
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--paper);
  background:
    radial-gradient(circle at 12% 4%, rgba(196, 181, 253, 0.16), transparent 28rem),
    radial-gradient(circle at 90% 16%, rgba(249, 168, 212, 0.13), transparent 27rem),
    radial-gradient(circle at 45% 110%, rgba(167, 243, 208, 0.08), transparent 34rem),
    var(--night);
  font-family: ui-rounded, "SF Pro Rounded", "Segoe UI", system-ui, sans-serif;
  line-height: 1.55;
}

button,
select {
  font: inherit;
}

button,
select,
a {
  -webkit-tap-highlight-color: transparent;
}

button:focus-visible,
select:focus-visible,
a:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

a {
  color: var(--gold);
}

.skip-link {
  position: fixed;
  z-index: 20;
  top: 0.75rem;
  left: 0.75rem;
  transform: translateY(-180%);
  border-radius: 999px;
  padding: 0.7rem 1rem;
  color: #17101f;
  background: var(--gold);
  font-weight: 800;
}

.skip-link:focus {
  transform: translateY(0);
}

main {
  width: min(72rem, calc(100% - 2rem));
  margin: 0 auto;
  padding: clamp(2.5rem, 7vw, 6.5rem) 0 3rem;
}

.hero {
  max-width: 61rem;
}

.eyebrow,
.kicker {
  margin: 0 0 0.45rem;
  color: var(--gold);
  font-size: 0.76rem;
  font-weight: 850;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1 {
  margin: 0;
  max-width: 12ch;
  font-size: clamp(3.3rem, 10vw, 7.6rem);
  line-height: 0.88;
  letter-spacing: -0.065em;
}

h2 {
  margin: 0;
  font-size: clamp(1.5rem, 3.2vw, 2.45rem);
  line-height: 1.08;
  letter-spacing: -0.035em;
}

h3 {
  margin: 0;
  font-size: 1.08rem;
}

.lede {
  max-width: 55rem;
  margin: 1.6rem 0 0;
  color: var(--muted);
  font-size: clamp(1.03rem, 2vw, 1.3rem);
}

.source-state {
  display: inline-flex;
  gap: 0.55rem;
  align-items: baseline;
  margin: 1.25rem 0 0;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.55rem 0.9rem;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.035);
  font-size: 0.86rem;
}

.boundary-strip,
.workbench,
.presentation,
.legend,
.host-boundary {
  border: 1px solid var(--line);
  border-radius: 1.5rem;
  background: var(--panel);
  box-shadow: 0 1.5rem 4rem var(--shadow);
}

.boundary-strip {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 1.5rem;
  align-items: end;
  margin-top: 2.4rem;
  padding: clamp(1.25rem, 4vw, 2.25rem);
}

.boundary-strip p:last-child {
  margin: 0;
  color: var(--muted);
}

.workbench,
.presentation,
.legend {
  margin-top: 1.1rem;
  padding: clamp(1.25rem, 4vw, 2.25rem);
}

.chooser {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(17rem, 0.8fr);
  gap: 2rem;
  align-items: start;
}

.chooser p:not(.kicker),
.scenario-description,
.choice-note,
.presentation-heading p,
.download-note,
.legend > p:not(.kicker),
.host-boundary {
  color: var(--muted);
}

form {
  display: grid;
  gap: 0.75rem;
}

label {
  color: var(--paper);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

select {
  width: 100%;
  min-height: 3rem;
  border: 1px solid var(--line-strong);
  border-radius: 0.8rem;
  padding: 0.6rem 2.5rem 0.6rem 0.85rem;
  color: var(--paper);
  background: var(--night-soft);
}

.scenario-description {
  min-height: 3em;
  margin: 0;
  font-size: 0.9rem;
}

.choice-row,
.download-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.65rem;
  margin-top: 1.4rem;
}

.interaction,
.download {
  min-height: 3rem;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  padding: 0.65rem 1rem;
  color: var(--paper);
  background: var(--panel-soft);
  font-weight: 800;
  cursor: pointer;
}

.interaction:hover,
.download:hover:not(:disabled) {
  border-color: var(--rose);
  background: rgba(249, 168, 212, 0.12);
}

.interaction:active,
.download:active:not(:disabled) {
  transform: translateY(1px);
}

.download:disabled {
  cursor: not-allowed;
  opacity: 0.46;
}

.choice-note,
.download-note {
  margin: 0.75rem 0 0;
  font-size: 0.86rem;
}

.presentation-heading {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(15rem, 0.72fr);
  gap: 1.5rem;
  align-items: end;
}

.presentation-heading p:last-child {
  margin: 0;
}

.seat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 13rem), 1fr));
  gap: 0.8rem;
  margin-top: 1.5rem;
}

.seat-card {
  display: grid;
  min-height: 10rem;
  grid-template-rows: auto 1fr auto;
  border: 1px solid var(--line-strong);
  border-radius: 1.15rem;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.04);
}

.slot-label {
  margin: 0;
  color: var(--gold);
  font-size: 0.72rem;
  font-weight: 850;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.seat-card h3 {
  align-self: center;
  margin: 0.65rem 0;
  font-size: clamp(1.3rem, 3vw, 2rem);
}

.seat-ref {
  margin: 0;
  color: var(--muted);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 0.72rem;
}

.empty-state {
  grid-column: 1 / -1;
  border: 1px dashed var(--line-strong);
  border-radius: 1.15rem;
  padding: 1.4rem;
  color: var(--muted);
  text-align: center;
}

.empty-state strong {
  display: block;
  margin-bottom: 0.25rem;
  color: var(--paper);
}

.vantage-list {
  display: grid;
  gap: 0.7rem;
  margin-top: 0.8rem;
}

.vantage-card {
  display: grid;
  grid-template-columns: minmax(10rem, 0.55fr) minmax(0, 1fr);
  gap: 1rem;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 1.15rem;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.026);
}

.vantage-direction {
  margin: 0;
  color: var(--paper);
  font-weight: 760;
}

.vantage-disclaimer {
  display: block;
  margin-top: 0.3rem;
  color: var(--muted);
  font-size: 0.74rem;
  font-weight: 500;
}

.bearing-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.42rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.bearing {
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  padding: 0.3rem 0.58rem;
  color: var(--paper);
  background: rgba(196, 181, 253, 0.08);
  font-size: 0.78rem;
  font-weight: 720;
}

.download-row {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  padding-top: 1.25rem;
}

.legend-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 15rem), 1fr));
  gap: 0.65rem;
  margin-top: 1.2rem;
}

.legend-item {
  border: 1px solid var(--line);
  border-radius: 1rem;
  padding: 0.9rem;
  background: rgba(255, 255, 255, 0.026);
}

.legend-item h3 {
  font-size: 0.9rem;
}

.legend-item p {
  margin: 0.35rem 0 0;
  color: var(--muted);
  font-size: 0.8rem;
}

.host-boundary {
  margin-top: 1.1rem;
  padding: 1rem 1.2rem;
  font-size: 0.84rem;
}

.host-boundary strong {
  color: var(--paper);
}

.noscript {
  border: 1px solid var(--line-strong);
  border-radius: 1rem;
  padding: 1rem;
  color: var(--paper);
}

@media (max-width: 48rem) {
  .boundary-strip,
  .chooser,
  .presentation-heading,
  .vantage-card {
    grid-template-columns: 1fr;
  }

  .choice-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 34rem) {
  main {
    width: min(100% - 1rem, 72rem);
  }

  .download-row {
    grid-template-columns: 1fr;
  }

  .source-state {
    border-radius: 1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}

@media (prefers-contrast: more) {
  :root {
    --muted: #eee8f7;
    --line: rgba(255, 255, 255, 0.48);
    --line-strong: rgba(255, 255, 255, 0.8);
  }
}