:root {
  color-scheme: dark;
  --bg: #080c14;
  --bg-raise: #101826;
  --ink: #e8ece0;
  --muted: #c5d0d8;
  --line: rgba(126, 232, 220, 0.42);
  --cyan: #9af6ea;
  --amber: #ffc56a;
  --banner: #f4efc4;
  --banner-ink: #14180c;
  --glass: rgba(13, 21, 34, 0.92);
  --connected-bg: #12352f;
  --connected-ink: #d9fff6;
  --stale-bg: #3d3014;
  --stale-ink: #ffe7b3;
  --offline-bg: #3d181b;
  --offline-ink: #ffd5d1;
  --connecting-bg: #1c2442;
  --connecting-ink: #e4e7ff;
  --focus: #f4efc4;
  --danger: #ffd0cc;
  --danger-bg: #4a1c22;
  font-family: "Avenir Next", "Segoe UI", system-ui, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  background: var(--bg);
}

body {
  margin: 0;
  color: var(--ink);
  background-color: var(--bg);
  background-image:
    radial-gradient(920px 540px at 50% -12%, rgba(110, 230, 220, 0.16), transparent 58%),
    radial-gradient(640px 380px at 100% 100%, rgba(255, 197, 106, 0.07), transparent 46%),
    repeating-linear-gradient(
      to bottom,
      rgba(232, 236, 224, 0.028) 0 1px,
      transparent 1px 4px
    ),
    linear-gradient(rgba(126, 232, 220, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(126, 232, 220, 0.045) 1px, transparent 1px);
  background-size: auto, auto, auto, 56px 56px, 56px 56px;
  line-height: 1.45;
  min-height: 100vh;
  overflow-wrap: break-word;
}

.skip {
  position: absolute;
  left: 12px;
  top: 12px;
  transform: translateY(-160%);
  background: var(--banner);
  color: var(--banner-ink);
  padding: 0.7rem 0.9rem;
  z-index: 30;
  font-weight: 700;
}

.skip:focus {
  transform: none;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.demo-banner {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--banner);
  color: var(--banner-ink);
  padding:
    calc(0.75rem + env(safe-area-inset-top, 0px))
    calc(1rem + env(safe-area-inset-right, 0px))
    0.85rem
    calc(1rem + env(safe-area-inset-left, 0px));
}

.demo-banner[hidden] {
  display: none;
}

.demo-banner p {
  margin: 0.3rem 0 0;
  max-width: 46rem;
}

.demo-banner__kicker {
  margin: 0;
  font-family: ui-monospace, "SFMono-Regular", "Cascadia Mono", Menlo, Consolas, monospace;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.shell {
  width: min(1180px, calc(100% - 1.25rem));
  margin: 0 auto;
  padding: 0.85rem 0 calc(2rem + env(safe-area-inset-bottom, 0px));
}

.topbar {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.8rem 1rem;
  align-items: flex-end;
  padding: 0.85rem 0 0.7rem;
}

.name-long,
.micro {
  margin: 0;
  color: var(--muted);
  font-family: ui-monospace, "SFMono-Regular", "Cascadia Mono", Menlo, Consolas, monospace;
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.wordmark {
  margin: 0.15rem 0 0;
  font-size: clamp(2.6rem, 7vw, 4.4rem);
  line-height: 0.9;
  letter-spacing: 0.16em;
  font-weight: 650;
}

.lede {
  margin: 0.45rem 0 0;
  max-width: 38rem;
  color: var(--muted);
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.chip,
kbd {
  display: inline-flex;
  align-items: center;
  min-height: 2rem;
  padding: 0.2rem 0.65rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--cyan);
  font-family: ui-monospace, "SFMono-Regular", "Cascadia Mono", Menlo, Consolas, monospace;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.layout {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.stage {
  position: relative;
  height: 250px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #070b12;
  overflow: hidden;
}

.stage canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.stage-caption {
  position: absolute;
  left: 0.8rem;
  bottom: 0.7rem;
  margin: 0;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  background: rgba(8, 12, 20, 0.82);
  border: 1px solid var(--line);
  font-family: ui-monospace, "SFMono-Regular", "Cascadia Mono", Menlo, Consolas, monospace;
  letter-spacing: 0.06em;
}

.stack {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  min-width: 0;
}

.glass {
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 0.95rem 1rem 1.05rem;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.28);
}

.glass h2,
.panel h2 {
  margin: 0.2rem 0 0;
  font-size: 1.15rem;
  letter-spacing: 0.04em;
}

.glass p,
.hint,
.notice,
.empty {
  color: var(--muted);
}

.facts {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem 0.7rem;
  margin: 0.9rem 0 0;
}

.facts dt,
.meter-label {
  margin: 0;
  color: var(--muted);
  font-family: ui-monospace, "SFMono-Regular", "Cascadia Mono", Menlo, Consolas, monospace;
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.facts dd,
.readout {
  margin: 0.2rem 0 0;
  font-family: ui-monospace, "SFMono-Regular", "Cascadia Mono", Menlo, Consolas, monospace;
  font-size: 1.15rem;
  font-weight: 650;
  color: var(--ink);
}

.pill {
  display: inline-flex;
  align-items: center;
  min-height: 1.8rem;
  padding: 0.1rem 0.55rem;
  border-radius: 999px;
  background: var(--offline-bg);
  color: var(--offline-ink);
}

.pill[data-connection="simulated"] {
  background: #f0c56a;
  color: #1a1408;
}

.pill[data-connection="connected"] {
  background: var(--connected-bg);
  color: var(--connected-ink);
}

.pill[data-connection="stale"] {
  background: var(--stale-bg);
  color: var(--stale-ink);
}

.pill[data-connection="connecting"] {
  background: var(--connecting-bg);
  color: var(--connecting-ink);
}

.meter {
  height: 0.55rem;
  margin-top: 0.45rem;
  border-radius: 999px;
  background: #1a2433;
  overflow: hidden;
}

.meter span {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--cyan), var(--amber));
}

.trace {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 42px;
  margin-top: 0.7rem;
}

.trace i {
  display: block;
  flex: 1 1 0;
  min-width: 0;
  max-width: 8px;
  height: 8%;
  border-radius: 2px 2px 0 0;
  background: var(--cyan);
  opacity: 0.85;
}

fieldset {
  border: 0;
  margin: 0.7rem 0 0;
  padding: 0;
}

legend {
  font-weight: 700;
  padding: 0;
}

.choices {
  display: grid;
  gap: 0.55rem;
  margin-top: 0.65rem;
}

.choice {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.75rem;
  align-items: center;
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 0.75rem;
  background: #0c1420;
  cursor: pointer;
}

.choice:has(input:checked) {
  border-color: var(--cyan);
  box-shadow: inset 0 0 0 1px var(--cyan);
}

.choice input {
  width: 1.2rem;
  height: 1.2rem;
  accent-color: var(--cyan);
}

.choice__title {
  display: block;
  font-weight: 700;
}

.choice__text {
  display: block;
  color: var(--muted);
}

.fields {
  display: grid;
  gap: 0.8rem;
  margin-top: 0.9rem;
}

.field label {
  display: block;
  margin-bottom: 0.3rem;
  font-weight: 700;
}

.optional {
  font-weight: 500;
  color: var(--muted);
}

input[type="text"],
input[type="url"],
input[type="number"] {
  width: 100%;
  min-height: 44px;
  border: 1px solid rgba(126, 232, 220, 0.55);
  border-radius: 12px;
  background: #0b121c;
  color: var(--ink);
  font: inherit;
  font-size: 1rem;
  padding: 0.65rem 0.75rem;
}

.suffix-field {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.suffix-field input {
  max-width: 7rem;
}

.hint,
.notice,
.empty {
  margin: 0.4rem 0 0;
}

.form-error {
  margin: 0.8rem 0 0;
  padding: 0.7rem 0.8rem;
  border-radius: 12px;
  background: var(--danger-bg);
  color: var(--danger);
  font-weight: 700;
}

.form-error[hidden] {
  display: none;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 0.9rem;
}

button {
  font: inherit;
  font-weight: 700;
  min-height: 44px;
  padding: 0.55rem 1rem;
  border-radius: 999px;
  border: 1px solid var(--cyan);
  background: transparent;
  color: var(--ink);
  cursor: pointer;
}

#start-button,
#pause-button {
  background: #123f3b;
  color: var(--cyan);
}

button[disabled] {
  cursor: not-allowed;
  opacity: 0.45;
}

button:focus-visible,
input:focus-visible,
.choice:focus-within,
.skip:focus-visible,
a:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.activity {
  list-style: none;
  margin: 0.7rem 0 0;
  padding: 0;
}

.activity li {
  display: grid;
  grid-template-columns: 8.2rem 1fr;
  gap: 0.7rem;
  padding: 0.65rem 0;
  border-top: 1px solid rgba(126, 232, 220, 0.2);
  font-family: ui-monospace, "SFMono-Regular", "Cascadia Mono", Menlo, Consolas, monospace;
}

.activity time {
  color: var(--muted);
}

.activity[hidden],
#activity-empty[hidden] {
  display: none;
}

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.9rem;
}

.site-footer {
  margin-top: 1rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.site-footer p {
  margin: 0 0 0.55rem;
  max-width: 46rem;
}

a {
  color: #d5ebff;
}

code {
  font-family: ui-monospace, "SFMono-Regular", "Cascadia Mono", Menlo, Consolas, monospace;
}

@media (min-width: 900px) {
  .layout {
    display: grid;
    grid-template-columns: minmax(0, 1.45fr) minmax(280px, 380px);
    align-items: start;
  }

  .stage {
    height: min(68vh, 640px);
    min-height: 460px;
    grid-row: span 1;
  }

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

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

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

@media (max-width: 560px) {
  .shell {
    width: min(1180px, calc(100% - 0.9rem));
  }

  .facts,
  .activity li {
    grid-template-columns: 1fr;
    gap: 0.15rem;
  }

  .actions button,
  #pause-button {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}