/* STS Learn Modules — frequency explorer. Self-contained; uses site tokens when
   present (var(--x, fallback)) so it also works on plain pages. */
.sts-freqx{
  --_accent:var(--accent,#2f7d4f); --_deep:var(--accent-deep,#1b5233);
  --_surface:var(--surface,#fff); --_surface2:var(--surface-2,#e9efe6);
  --_ink:var(--ink,#161d18); --_soft:var(--ink-soft,#4e5a51); --_faint:var(--ink-faint,#84918a);
  --_line:var(--line,#dce4d9);
  --_sans:"Helvetica Neue",Helvetica,"Segoe UI",Roboto,Arial,system-ui,sans-serif;
  background:radial-gradient(130% 130% at 25% 0%,var(--_surface),var(--_surface2));
  border:1px solid var(--_line);border-radius:20px;
  box-shadow:0 1px 2px rgba(22,29,24,.05),0 14px 36px -18px rgba(27,82,51,.32);
  padding:22px;display:flex;flex-direction:column;gap:16px;font-family:var(--_sans)}
.sts-freqx *{box-sizing:border-box}
.sts-freqx-head{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}
.sts-eyebrow{font-size:12.5px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--_accent)}
.sts-mode-toggle{display:inline-flex;background:var(--_surface2);border:1px solid var(--_line);border-radius:999px;padding:3px;gap:2px}
.sts-mode-toggle button{display:inline-flex;align-items:center;gap:5px;border:0;background:transparent;color:var(--_soft);font-family:inherit;font-weight:700;font-size:11px;letter-spacing:.04em;text-transform:uppercase;padding:5px 10px;border-radius:999px;cursor:pointer;transition:all .15s}
.sts-mode-toggle button.active{background:var(--_accent);color:#fff}
.sts-mode-toggle svg{width:13px;height:13px}
.sts-band-tabs{display:flex;flex-wrap:wrap;gap:6px}
.sts-band-tab{flex:1 1 58px;border:1px solid var(--_line);background:var(--_surface);color:var(--_soft);border-radius:10px;padding:8px 3px;cursor:pointer;font-weight:700;font-size:12px;font-family:inherit;display:flex;flex-direction:column;align-items:center;gap:2px;transition:all .15s}
.sts-band-tab .g{font-size:16px;line-height:1}
.sts-band-tab:hover{border-color:var(--_accent);color:var(--_accent)}
.sts-band-tab.active{background:var(--_accent);border-color:var(--_accent);color:#fff}
.sts-scope{position:relative;height:190px;border-radius:12px;overflow:hidden;border:1px solid var(--_line);
  background:linear-gradient(0deg,color-mix(in srgb,var(--_accent) 5%,var(--_surface)),var(--_surface))}
.sts-scope canvas{position:absolute;inset:0;width:100%;height:100%}
.sts-freq-info{display:flex;flex-direction:column;gap:6px;min-height:96px}
.sts-freq-hz{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap}
.sts-band-name{font-size:22px;font-weight:800;letter-spacing:-.01em;color:var(--_ink)}
.sts-band-hz{font-size:15px;font-weight:700;color:var(--_accent);font-variant-numeric:tabular-nums}
.sts-freq-state{font-size:13px;font-weight:600;color:var(--_faint);text-transform:uppercase;letter-spacing:.06em}
.sts-freq-desc{font-family:Georgia,"Times New Roman",serif;font-size:15px;color:var(--_soft);line-height:1.5;margin:0}
.sts-band-tab:focus-visible,.sts-mode-toggle button:focus-visible{outline:2.5px solid var(--_accent);outline-offset:2px}
@media (max-width:560px){.sts-band-tab{font-size:11.5px}}

/* Dark mode — applied by frequencies.js (.sts-dark) via the in-panel toggle.
   Overrides the token fallbacks so the component works standalone in dark. */
.sts-freqx.sts-dark{
  --_accent:#6cc48d; --_deep:#8fd6aa;
  --_surface:#141a16; --_surface2:#1c2620;
  --_ink:#eef4ef; --_soft:#b7c4bb; --_faint:#7f8f84;
  --_line:#2b3a31;
  box-shadow:0 1px 2px rgba(0,0,0,.4),0 18px 44px -20px rgba(0,0,0,.7)}
.sts-freqx.sts-dark .sts-band-tab.active,
.sts-freqx.sts-dark .sts-mode-toggle button.active{color:#0f1611}

/* Scope caption — states the time window and cycle count so the drawing can be
   checked by counting rather than trusted. Sits directly under the trace. */
.sts-freqx .sts-scope-caption{
  margin:8px 2px 0;font-size:12.5px;line-height:1.45;color:var(--_faint,#84918a);
  font-variant-numeric:tabular-nums}

/* Time-window selector. Sits between the trace and the caption because it changes
   what both of them mean. */
.sts-freqx .sts-window{display:flex;align-items:center;gap:6px;margin:10px 2px 0;flex-wrap:wrap}
.sts-freqx .sts-window-label{font-size:12px;font-weight:700;letter-spacing:.06em;
  text-transform:uppercase;color:var(--_faint,#84918a);margin-right:2px}
.sts-freqx .sts-win-btn{font:inherit;font-size:12.5px;font-weight:700;line-height:1;
  cursor:pointer;padding:6px 11px;border-radius:999px;
  border:1px solid var(--_line,#dce4d9);background:transparent;color:var(--_soft,#4e5a51);
  font-variant-numeric:tabular-nums;transition:background .15s,color .15s,border-color .15s}
.sts-freqx .sts-win-btn:hover{border-color:var(--_accent,#2f7d4f);color:var(--_accent,#2f7d4f)}
.sts-freqx .sts-win-btn.active{background:var(--_accent,#2f7d4f);border-color:transparent;color:#fff}
.sts-freqx .sts-win-btn:focus-visible{outline:2.5px solid var(--_accent,#2f7d4f);outline-offset:2px}