/* Layout: the viewport is one chart. A gridded plot where data points assemble
   the name fills the screen; identity and links sit underneath as caption and legend. */
:root {
  --field: #1531c9;       /* cobalt plot ground */
  --field-deep: #0c1f8f;  /* vignette edge */
  --grid: rgba(214, 222, 255, 0.11);
  --axis: rgba(214, 222, 255, 0.42);
  --paper: #eef1ff;       /* text + series A */
  --muted: #b3beff;       /* labels, secondary text */
  --saffron: #ffc94d;     /* series B, focus */
  --coral: #ff6a4d;       /* series C */

  --font-display: "Bricolage Grotesque", "Arial Narrow", system-ui, sans-serif;
  --font-mono: "Martian Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;

  --step--1: clamp(0.66rem, 0.63rem + 0.12vw, 0.74rem);
  --step-0: clamp(0.94rem, 0.9rem + 0.2vw, 1.06rem);
  --step-3: clamp(2.1rem, 1.4rem + 3.4vw, 4.4rem);

  color-scheme: dark;
}

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

html {
  height: 100%;
  touch-action: manipulation;
  background: var(--field-deep);
}

body {
  margin: 0;
  min-height: 100%;
  color: var(--paper);
  background:
    radial-gradient(120% 95% at 50% 32%, var(--field) 0%, var(--field) 42%, var(--field-deep) 100%);
  font-family: var(--font-display);
  font-size: var(--step-0);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

:focus-visible {
  outline: 2px solid var(--saffron);
  outline-offset: 3px;
  border-radius: 2px;
}

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

.mono {
  font-family: var(--font-mono);
  font-stretch: 87.5%;
  font-size: var(--step--1);
  letter-spacing: 0.02em;
}

/* ---------- page frame ---------- */

main { display: contents; }

.page {
  min-height: 100vh;
  min-height: 100svh;
  max-width: 1480px;
  margin: 0 auto;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  gap: clamp(14px, 2.6vh, 30px);
  padding-inline: clamp(16px, 4vw, 56px);
  padding-block: clamp(16px, 3vh, 36px);
}

.topbar {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px 24px;
  color: var(--muted);
}

.topbar a {
  color: var(--paper);
  text-decoration: none;
  font-weight: 500;
}
@media (hover: hover) {
  .topbar a:hover { text-decoration: underline; text-underline-offset: 3px; }
}

.clock { margin: 0; font-variant-numeric: tabular-nums; }
.clock time { color: var(--paper); }

/* ---------- the plot ---------- */

.plot {
  margin: 0;
  display: grid;
  grid-template-rows: minmax(0, 1fr) auto;
  gap: 10px;
  min-height: 0;
}

.plot-area {
  position: relative;
  min-height: 230px;
}

.plot-area canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  touch-action: none;
  cursor: crosshair;
  -webkit-tap-highlight-color: transparent;
  -webkit-user-select: none;
  user-select: none;
}

.plot figcaption {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: 16px;
  min-width: 0;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.plot figcaption > * { flex: none; white-space: nowrap; }

.plot figcaption b {
  color: var(--paper);
  font-weight: 500;
}

.plot figcaption .status {
  flex: 0 1 auto;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
}
.status::before {
  content: "";
  display: inline-block;
  width: 7px; height: 7px;
  margin-right: 8px;
  border-radius: 50%;
  background: var(--muted);
  vertical-align: 1px;
}
.status[data-phase="moving"]::before { background: var(--saffron); }
.status[data-phase="settled"]::before { background: var(--paper); }

.next {
  margin-left: auto;
  -webkit-appearance: none;
  appearance: none;
  font: inherit;
  line-height: 1;
  color: var(--paper);
  background: transparent;
  border: 1px solid var(--axis);
  border-radius: 999px;
  min-height: 32px;
  padding: 0 12px 0 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  cursor: pointer;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  transition: background-color 160ms ease, border-color 160ms ease;
}
.next:active { background: rgba(238, 241, 255, 0.18); border-color: var(--paper); }
.next svg {
  flex: none;
  display: block;
  width: 13px; height: 13px;
  fill: none; stroke: currentColor; stroke-width: 1.6;
  stroke-linecap: round; stroke-linejoin: round;
}

@media (hover: hover) {
  .next:hover { background: rgba(238, 241, 255, 0.1); border-color: var(--paper); }
}

@media (max-width: 440px) {
  .plot figcaption { gap: 12px; }
  .plot figcaption .count { display: none; }
}

/* ---------- identity + legend ---------- */

.card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 22px 56px;
  padding-top: clamp(14px, 2.4vh, 26px);
  border-top: 1px solid var(--axis);
}

.who { min-width: 0; }

h1 {
  margin: 0;
  font-size: var(--step-3);
  font-weight: 700;
  font-stretch: 84%;
  line-height: 0.98;
  letter-spacing: -0.025em;
  text-wrap: balance;
}

.role {
  margin: 14px 0 0;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  line-height: 1.7;
}
.role span { white-space: nowrap; }
.role span:not(:last-child)::after {
  content: "/";
  margin: 0 0.7em;
  color: var(--axis);
}

.legend {
  min-width: 0;
  border: 1px solid var(--axis);
  border-radius: 4px;
  padding: 10px 6px 6px;
  background: rgba(12, 31, 143, 0.35);
}

.legend-title {
  margin: 0 10px 6px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.legend ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.legend a {
  display: grid;
  grid-template-columns: 14px minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 8px 10px;
  border-radius: 3px;
  text-decoration: none;
  font-size: var(--step-0);
  font-weight: 500;
  transition: background-color 140ms ease;
}

.legend a:focus-visible { background: rgba(238, 241, 255, 0.1); }

.legend .label { overflow-wrap: anywhere; }

.legend .go {
  width: 15px;
  height: 15px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
  color: var(--muted);
  transition: transform 160ms ease, color 160ms ease;
}

.marker { width: 12px; height: 12px; display: block; transition: transform 160ms ease; }
.legend a:focus-visible .marker { transform: scale(1.35); }
.marker.s0 { fill: var(--paper); }
.marker.s1 { fill: var(--saffron); }
.marker.s2 { fill: var(--coral); }

@media (hover: hover) {
  .legend a:hover { background: rgba(238, 241, 255, 0.1); }
  .legend a:hover .go { color: var(--paper); transform: translateX(2px); }
  .legend a:hover .marker { transform: scale(1.35); }
}

@media (max-width: 760px) {
  .page { grid-template-rows: auto auto auto; align-content: start; }
  .plot-area { min-height: 0; aspect-ratio: 4 / 3; max-width: 100%; }
  .card { grid-template-columns: 1fr; align-items: start; }
  .legend { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; }
}