:root {
  --bg: #f4f5f7;
  --surface: #ffffff;
  --text: #15171c;
  --muted: #6b7280;
  --border: #e3e5ea;
  --track: #e8eaef;
  --tick: #c5c9d2;
  --tick-major: #8b919e;
  --hub: #ffffff;
  --pos: #1f8a3b;
  --neg: #c62828;
  --danger: #c62828;
  --accent: #2e86de;
  --shadow: 0 6px 24px rgba(20, 23, 31, 0.08);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #14171f;
    --surface: #1e222c;
    --text: #eef0f4;
    --muted: #9aa1ae;
    --border: #2d3240;
    --track: #2a2f3b;
    --tick: #3d4352;
    --tick-major: #6f7686;
    --hub: #1e222c;
    --pos: #4cc56b;
    --neg: #ff6b6b;
    --danger: #ff6b6b;
    --shadow: 0 6px 24px rgba(0, 0, 0, 0.35);
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --bg: #14171f;
  --surface: #1e222c;
  --text: #eef0f4;
  --muted: #9aa1ae;
  --border: #2d3240;
  --track: #2a2f3b;
  --tick: #3d4352;
  --tick-major: #6f7686;
  --hub: #1e222c;
  --pos: #4cc56b;
  --neg: #ff6b6b;
  --danger: #ff6b6b;
  --shadow: 0 6px 24px rgba(0, 0, 0, 0.35);
  color-scheme: dark;
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  display: flex;
  flex-direction: column;
  min-height: 100svh;
  padding: env(safe-area-inset-top) 0 env(safe-area-inset-bottom);
  -webkit-tap-highlight-color: transparent;
  overscroll-behavior: none;
}

button { font: inherit; color: inherit; }

.btn {
  min-height: 44px;
  padding: 0 18px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface);
  cursor: pointer;
  font-weight: 600;
}
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: 0.4; cursor: default; }
.btn.ghost { background: transparent; }
.btn.primary { background: var(--accent); border-color: transparent; color: #fff; }
.btn.danger { color: var(--danger); background: transparent; }

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 16px 0;
}
.topbar h1 { font-size: 18px; margin: 0; letter-spacing: 0.02em; }

/* Players strip */
.players {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding: 12px 16px;
  scroll-snap-type: x proximity;
  scrollbar-width: none;
}
.players::-webkit-scrollbar { display: none; }

.player {
  --pc: var(--accent);
  flex: 0 0 auto;
  min-width: 96px;
  padding: 10px 14px;
  border-radius: 14px;
  border: 2px solid transparent;
  background: var(--surface);
  box-shadow: var(--shadow);
  text-align: left;
  cursor: pointer;
  scroll-snap-align: start;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
  position: relative;
}
.player::before {
  content: "";
  position: absolute;
  left: 10px; right: 10px; top: 0;
  height: 4px;
  border-radius: 0 0 4px 4px;
  background: var(--pc);
}
.player[aria-pressed="true"] { border-color: var(--pc); }
.player .name {
  display: block;
  font-size: 13px;
  color: var(--muted);
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.player .score { display: block; font-size: 26px; font-weight: 700; font-variant-numeric: tabular-nums; }
.player .lead { color: #e6a700; font-size: 13px; margin-left: 4px; }
.player.add {
  display: grid;
  place-items: center;
  color: var(--muted);
  font-size: 15px;
  box-shadow: none;
  border: 2px dashed var(--border);
  background: transparent;
}
.player.add::before { display: none; }

/* Stage */
.stage {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 4px 16px 12px;
}

.preview {
  min-height: 34px;
  font-size: 22px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  text-align: center;
}
.preview .who { color: var(--accent); }
.preview .arrow { color: var(--muted); margin: 0 6px; }

/* Dial */
.dial {
  position: relative;
  width: min(88vw, 50svh, 420px);
  aspect-ratio: 1;
  border-radius: 50%;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
  cursor: grab;
  outline: none;
  filter: drop-shadow(0 8px 24px rgba(0, 0, 0, 0.12));
}
.dial.active { cursor: grabbing; }
.dial:focus-visible { box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 45%, transparent); }
.dial-svg { width: 100%; height: 100%; display: block; overflow: visible; }
.dial-track { fill: var(--surface); stroke: var(--track); stroke-width: 8; }
.dial-arc {
  fill: none;
  stroke: var(--pos);
  stroke-width: 8;
  stroke-linecap: round;
  stroke-dasharray: 0 999;
  transition: stroke 0.15s;
}
.dial[data-sign="neg"] .dial-arc { stroke: var(--neg); }
.dial[data-sign="zero"] .dial-arc { stroke: var(--tick-major); }
.tick { stroke: var(--tick); stroke-width: 1.4; stroke-linecap: round; }
.tick.major { stroke: var(--tick-major); stroke-width: 2.4; }
.dial-grip { fill: var(--accent); }
.dial-hub { fill: var(--hub); stroke: var(--border); stroke-width: 1; }

.dial-readout {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  text-align: center;
  pointer-events: none;
}
.dial-delta {
  font-size: clamp(44px, 14vw, 72px);
  font-weight: 800;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  color: var(--muted);
}
.dial[data-sign="pos"] .dial-delta { color: var(--pos); }
.dial[data-sign="neg"] .dial-delta { color: var(--neg); }
.dial-hint { margin-top: 6px; font-size: 13px; color: var(--muted); }

.nudges { display: flex; gap: 12px; }
.nudges .btn { min-width: 72px; font-size: 18px; }
.nudges #undo { font-size: 15px; }

/* History */
.history {
  margin: 0 16px 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
}
.history summary {
  padding: 12px 14px;
  cursor: pointer;
  font-weight: 600;
  list-style-position: inside;
}
.history summary span { color: var(--muted); font-weight: 400; }
.history ol {
  list-style: none;
  margin: 0;
  padding: 0 14px 10px;
  max-height: 32svh;
  overflow-y: auto;
}
.history li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 7px 0;
  border-top: 1px solid var(--border);
  font-variant-numeric: tabular-nums;
}
.history .dot { width: 9px; height: 9px; border-radius: 50%; flex: 0 0 auto; align-self: center; }
.history .hname { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.history .hdelta { font-weight: 700; }
.history .hdelta.pos { color: var(--pos); }
.history .hdelta.neg { color: var(--neg); }
.history .htotal, .history .htime { color: var(--muted); font-size: 13px; }
.history .empty { color: var(--muted); border: 0; }

/* Player dialog */
dialog {
  border: 0;
  border-radius: 18px;
  padding: 20px;
  width: min(92vw, 360px);
  background: var(--surface);
  color: var(--text);
  box-shadow: var(--shadow);
}
dialog::backdrop { background: rgba(0, 0, 0, 0.45); }
dialog h2 { margin: 0 0 14px; font-size: 18px; }
.field { display: grid; gap: 6px; font-size: 13px; color: var(--muted); }
.field input {
  font: inherit;
  font-size: 17px;
  color: var(--text);
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg);
}
.swatches { border: 0; padding: 0; margin: 16px 0; display: flex; flex-wrap: wrap; gap: 10px; }
.swatches legend { font-size: 13px; color: var(--muted); margin-bottom: 8px; padding: 0; }
.swatches label { position: relative; }
.swatches input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.swatches span {
  display: block;
  width: 34px; height: 34px;
  border-radius: 50%;
  border: 3px solid transparent;
  box-shadow: inset 0 0 0 2px var(--surface);
}
.swatches input:checked + span { border-color: var(--text); }
.swatches input:focus-visible + span { outline: 2px solid var(--accent); outline-offset: 2px; }
.dialog-actions { display: flex; gap: 8px; align-items: center; }
.dialog-actions .spacer { flex: 1; }
.dialog-actions .btn { padding: 0 14px; }

@media (min-height: 760px) {
  .stage { gap: 20px; }
}