:root {
  --ink: #f2efe8;
  --ink-dim: #a9a79f;
  --panel: rgba(16, 19, 17, 0.9);
  --line: rgba(242, 239, 232, 0.14);
  --accent: #ff7a1a;
  --mono: "Cascadia Mono", "JetBrains Mono", Consolas, "Courier New", monospace;
  --sans: "Segoe UI Variable Text", "Segoe UI", system-ui, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  background: #0b0d0c;
  color: var(--ink);
  font: 15px/1.45 var(--sans);
}

#view {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

/* ---------- OSD ---------- */
#osd {
  position: fixed;
  inset: 0;
  pointer-events: none;
  font: 600 clamp(15px, 1.5vw, 24px) / 1.25 var(--mono);
  letter-spacing: 0.06em;
  color: #fff;
  text-shadow: 0 0 2px #000, 1px 1px 0 #000, -1px -1px 0 #000, 1px -1px 0 #000, -1px 1px 0 #000;
  font-variant-numeric: tabular-nums;
}
.osd { position: absolute; display: flex; flex-direction: column; gap: 0.15em; }
.osd.tl { top: 5%; left: 5%; }
.osd.tr { top: 5%; right: 5%; align-items: flex-end; }
.osd.bl { bottom: 6%; left: 5%; }
.osd.br { bottom: 6%; right: 5%; align-items: flex-end; }
.osd .dim { opacity: 0.75; font-size: 0.8em; }
.osd.centre {
  top: 30%;
  left: 0;
  right: 0;
  align-items: center;
  text-align: center;
  font-size: 1.5em;
  white-space: pre-line;
}
.osd.note {
  top: 12%;
  left: 0;
  right: 0;
  align-items: center;
  text-align: center;
  font-size: 0.8em;
  letter-spacing: 0.03em;
}
#sticks {
  position: absolute;
  bottom: 5%;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 18px;
}
.stickbox {
  position: relative;
  width: clamp(54px, 5.5vw, 84px);
  aspect-ratio: 1;
  border: 2px solid rgba(255, 255, 255, 0.7);
  border-radius: 6px;
  background:
    linear-gradient(rgba(255, 255, 255, 0.28), rgba(255, 255, 255, 0.28)) center / 100% 1px no-repeat,
    linear-gradient(rgba(255, 255, 255, 0.28), rgba(255, 255, 255, 0.28)) center / 1px 100% no-repeat,
    rgba(0, 0, 0, 0.28);
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.6);
}
.stickbox i {
  position: absolute;
  width: 12px;
  height: 12px;
  margin: -6px 0 0 -6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 1.5px #000;
  left: 50%;
  top: 50%;
}

/* ---------- screens ---------- */
.screen {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 16px;
  background: radial-gradient(ellipse at center, rgba(8, 10, 9, 0.35), rgba(8, 10, 9, 0.82));
}
.screen[hidden], [hidden] { display: none !important; }

.card {
  width: min(560px, 100%);
  padding: 34px 36px 28px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  backdrop-filter: blur(10px);
}
.eyebrow {
  margin: 0 0 6px;
  font: 600 12px/1 var(--mono);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
}
h1 {
  margin: 0 0 6px;
  font: 700 clamp(40px, 7vw, 64px) / 1 var(--sans);
  letter-spacing: -0.02em;
  text-wrap: balance;
}
.status { margin: 0 0 22px; color: var(--ink-dim); min-height: 1.45em; }

button {
  font: 600 15px/1 var(--sans);
  color: #14110d;
  background: var(--accent);
  border: 0;
  border-radius: 8px;
  padding: 11px 18px;
  cursor: pointer;
}
button:hover:not(:disabled) { filter: brightness(1.1); }
button:disabled { opacity: 0.4; cursor: default; }
button:focus-visible, input:focus-visible { outline: 2px solid var(--ink); outline-offset: 2px; }
button.ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); }
button.ghost:hover:not(:disabled) { background: rgba(242, 239, 232, 0.08); filter: none; }
#start-go { font-size: 18px; padding: 14px 44px; }

kbd {
  display: inline-block;
  min-width: 1.6em;
  padding: 1px 6px;
  margin: 0 2px;
  font: 600 12px/1.5 var(--mono);
  text-align: center;
  color: var(--ink);
  background: rgba(242, 239, 232, 0.1);
  border: 1px solid var(--line);
  border-radius: 5px;
}
.keys { margin: 26px 0 0; padding-top: 18px; border-top: 1px solid var(--line); display: grid; gap: 10px; }
.keys div { display: grid; grid-template-columns: 130px 1fr; gap: 12px; }
.keys dt { color: var(--ink-dim); font-size: 13px; padding-top: 2px; }
.keys dd { margin: 0; font-size: 14px; }

/* ---------- settings panel ---------- */
.panel {
  width: min(640px, 100%);
  max-height: min(820px, 100%);
  display: flex;
  flex-direction: column;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  backdrop-filter: blur(10px);
  overflow: hidden;
}
.panel header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
}
#tabs { display: flex; gap: 4px; flex-wrap: wrap; }
#tabs button {
  background: transparent;
  color: var(--ink-dim);
  padding: 9px 14px;
  border-radius: 7px;
}
#tabs button[aria-selected="true"] { background: rgba(242, 239, 232, 0.1); color: var(--ink); }
.panel section { padding: 14px 20px 6px; overflow-y: auto; }
.panel footer { padding: 12px 16px 14px; border-top: 1px solid var(--line); display: flex; justify-content: flex-end; }
.panel h3 {
  margin: 16px 0 4px;
  font: 600 12px/1 var(--mono);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
}
.note { margin: 2px 0 10px; color: var(--ink-dim); font-size: 13.5px; }
.row {
  display: grid;
  grid-template-columns: 170px 1fr 92px;
  align-items: center;
  gap: 14px;
  padding: 7px 0;
}
.row .name { color: var(--ink); }
.row .value { font: 500 13.5px/1 var(--mono); text-align: right; color: var(--ink-dim); font-variant-numeric: tabular-nums; }
.row .value.wide { grid-column: 2 / 4; text-align: left; font-family: var(--sans); line-height: 1.4; }
.row.toggle { grid-template-columns: 170px 1fr; }
.row.toggle input { justify-self: start; width: 20px; height: 20px; accent-color: var(--accent); }
input[type="range"] { width: 100%; accent-color: var(--accent); }
select {
  width: 100%;
  font: 500 14px/1.3 var(--sans);
  color: var(--ink);
  background: rgba(242, 239, 232, 0.08);
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 8px 10px;
}
select:focus-visible { outline: 2px solid var(--ink); outline-offset: 2px; }
select option { color: #14110d; background: #f2efe8; }
.calmsg { margin-left: 10px; color: var(--accent); font-weight: 600; }
.presets { display: flex; gap: 8px; flex-wrap: wrap; }
.presets button { padding: 9px 14px; border: 1px solid transparent; }
.presets button.ghost { border-color: var(--line); }

/* ---------- rates screen ---------- */
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
.rates { width: 100%; border-collapse: collapse; margin: 4px 0 14px; }
.rates th {
  padding: 6px 8px;
  font: 600 11.5px/1.25 var(--sans);
  letter-spacing: 0.02em;
  text-align: left;
  color: var(--ink-dim);
  border-bottom: 1px solid var(--line);
}
.rates td { padding: 6px 8px; border-bottom: 1px solid var(--line); }
.rates td.axis-name {
  font: 700 12.5px/1 var(--mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  white-space: nowrap;
}
.rates td.axis-name::before {
  content: "";
  display: inline-block;
  width: 10px;
  height: 10px;
  margin-right: 8px;
  border-radius: 2px;
  background: var(--axis);
}
.rates td.num { font: 500 13.5px/1 var(--mono); color: var(--ink-dim); font-variant-numeric: tabular-nums; white-space: nowrap; }
.rates td.live { color: var(--ink); min-width: 62px; }
.rates input {
  width: 84px;
  font: 500 14px/1 var(--mono);
  color: var(--ink);
  background: rgba(242, 239, 232, 0.08);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 7px 8px;
  font-variant-numeric: tabular-nums;
}
#rates-preview {
  display: block;
  width: 100%;
  height: 250px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.28);
}
.axes { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin: 6px 0 10px; }
.axis { font: 500 11px/1.2 var(--mono); color: var(--ink-dim); }
.axis .bar { position: relative; height: 8px; margin-top: 4px; background: rgba(242, 239, 232, 0.1); border-radius: 4px; overflow: hidden; }
.axis .bar i { position: absolute; top: 0; bottom: 0; width: 3px; margin-left: -1.5px; background: var(--accent); }
.axis b { color: var(--ink); font-weight: 600; }

@media (max-width: 560px) {
  .rates th:nth-child(5), .rates td:nth-child(5) { display: none; }
  .rates input { width: 64px; padding: 6px; }
  .rates th, .rates td { padding: 5px 4px; }
  .row { grid-template-columns: 1fr 76px; }
  .row .name { grid-column: 1 / 3; }
  .row.toggle { grid-template-columns: 1fr auto; }
  .row.toggle .name { grid-column: 1; }
  .row .value.wide { grid-column: 1 / 3; }
  .keys div { grid-template-columns: 1fr; gap: 2px; }
  .card { padding: 24px 20px; }
}

@media (prefers-reduced-motion: no-preference) {
  .screen { animation: fade 160ms ease-out; }
  @keyframes fade { from { opacity: 0; } to { opacity: 1; } }
}