:root {
  --bg: #f6f6f4;
  --surface: #ffffff;
  --text: #15151e;
  --muted: #5c5c66;
  --border: #d9d9de;
  --accent: #e10600;
  --accent-text: #ffffff;
  --chip-off: #ececef;
  --group-a: #c8102e;
  --group-b: #00756f;
  --group-c: #a14a00;
  --group-d: #1f4fd1;
  --slice-text: #ffffff;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #101015;
    --surface: #1b1b23;
    --text: #f2f2f5;
    --muted: #a3a3ad;
    --border: #33333f;
    --chip-off: #2a2a34;
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --bg: #101015;
  --surface: #1b1b23;
  --text: #f2f2f5;
  --muted: #a3a3ad;
  --border: #33333f;
  --chip-off: #2a2a34;
  color-scheme: dark;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Titillium Web', system-ui, sans-serif;
  line-height: 1.4;
}

.flag {
  height: 12px;
  background: repeating-conic-gradient(var(--text) 0 25%, var(--bg) 0 50%) 0 0 / 12px 12px;
}

main {
  max-width: 960px;
  margin: 0 auto;
  padding: 24px 16px 48px;
  display: grid;
  gap: 24px;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 6vw, 3rem);
  font-weight: 700;
  font-style: italic;
  letter-spacing: -0.01em;
}

h1::after {
  content: '';
  display: block;
  width: 64px;
  height: 4px;
  margin-top: 4px;
  background: var(--accent);
}

h2 { margin: 0 0 4px; font-size: 1.25rem; }
.lede, .hint { margin: 4px 0 0; color: var(--muted); }
.hint { margin-bottom: 12px; }

.groups {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
}

.group {
  margin: 0;
  padding: 12px;
  border: 1px solid var(--border);
  border-top: 4px solid var(--group-color);
  border-radius: 8px;
  background: var(--surface);
}

.group.off { opacity: 0.5; }

.group label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  cursor: pointer;
}

.group input { width: 18px; height: 18px; accent-color: var(--group-color); }

.chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }

.chip {
  font: inherit;
  font-size: 0.9rem;
  padding: 2px 10px;
  border-radius: 999px;
  border: 1px solid var(--group-color);
  background: var(--group-color);
  color: var(--slice-text);
  cursor: pointer;
}

.chip[aria-pressed="false"] {
  background: var(--chip-off);
  color: var(--muted);
  border-color: var(--border);
  text-decoration: line-through;
}

.chip:disabled { cursor: not-allowed; }

.track { display: grid; justify-items: center; gap: 16px; }

.wheel {
  position: relative;
  width: min(100%, 480px);
  aspect-ratio: 1;
}

#rotor {
  width: 100%;
  height: 100%;
  transform-origin: 50% 50%;
  transition: transform 5.5s cubic-bezier(0.1, 0.75, 0.1, 1);
}

.pointer {
  position: absolute;
  top: -6px;
  left: 50%;
  z-index: 1;
  width: 0;
  height: 0;
  transform: translateX(-50%);
  border-left: 14px solid transparent;
  border-right: 14px solid transparent;
  border-top: 28px solid var(--accent);
  filter: drop-shadow(0 2px 2px rgb(0 0 0 / 0.35));
}

.slice { stroke: var(--surface); stroke-width: 0.6; }
.slice-label { fill: var(--slice-text); font-weight: 600; }
.hub { fill: var(--surface); stroke: var(--text); stroke-width: 2; }
.empty { fill: var(--chip-off); stroke: var(--border); }
.empty-label { fill: var(--muted); font-size: 10px; }

.spin {
  font: inherit;
  font-size: 1.25rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 10px 40px;
  border: 0;
  border-radius: 6px;
  background: var(--accent);
  color: var(--accent-text);
  cursor: pointer;
}

.spin:disabled { opacity: 0.5; cursor: not-allowed; }

.spin:focus-visible, .chip:focus-visible, .group input:focus-visible {
  outline: 3px solid var(--text);
  outline-offset: 2px;
}

.result { margin: 0; min-height: 4.5rem; text-align: center; }
.result strong { display: block; font-size: clamp(2rem, 8vw, 3rem); line-height: 1.1; }
.result span { color: var(--muted); }

@media (prefers-reduced-motion: reduce) {
  #rotor { transition-duration: 0.8s; }
}