:root {
  color-scheme: dark;
  --bg: #050606;
  --panel: #090c0d;
  --line: rgba(226, 255, 244, 0.14);
  --line-strong: rgba(187, 255, 42, 0.55);
  --text: #f7faf3;
  --muted: #aab6b0;
  --green: #bbff2a;
  --font: "Avenir Next", "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
}

a {
  color: inherit;
}

p {
  margin: 0;
}

select {
  font: inherit;
}

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

.signal-shell,
.site-legal-footer {
  width: min(920px, calc(100% - 22px));
  margin: 0 auto;
}

.signal-shell {
  display: grid;
  gap: 10px;
  padding: 10px 0 28px;
}

.lens-strip,
.chart-card {
  border: 1px solid var(--line);
  background: var(--panel);
}

.lens-strip {
  padding: 12px;
}

.lens-control {
  display: grid;
  gap: 6px;
}

.lens-control span {
  color: var(--green);
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 900;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.lens-control select {
  width: 100%;
  min-height: 46px;
  border: 1px solid var(--line);
  border-radius: 0;
  padding: 0 12px;
  background: #050707;
  color: var(--text);
  outline: none;
}

.lens-control select:focus {
  border-color: var(--line-strong);
}

.chart-card {
  display: grid;
  gap: 8px;
  min-width: 0;
  padding: 8px;
}

.signal-chart {
  width: 100%;
  min-height: min(640px, calc(100vh - 185px));
}

.site-legal-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 18px;
  align-items: center;
  justify-content: center;
  padding: 22px 0 18px;
  color: var(--muted);
  font-size: 0.9rem;
}

.site-legal-footer a {
  color: inherit;
  text-decoration: none;
}

.site-legal-footer a:hover,
.site-legal-footer a:focus-visible {
  color: var(--green);
  outline: none;
}

@media (min-width: 720px) {
  .signal-shell,
  .site-legal-footer {
    width: min(980px, calc(100% - 48px));
  }

  .signal-shell {
    gap: 12px;
    padding-top: 14px;
  }

  .lens-strip {
    justify-self: end;
    width: min(320px, 100%);
  }

  .chart-card {
    padding: 14px;
  }

  .signal-chart {
    min-height: 620px;
  }
}