:root {
  --page-bg: #030917;
  --panel-bg: rgba(8, 15, 40, 0.7);
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --accent: #38bdf8;
  --accent-strong: #0ea5e9;
  --shadow-soft: 0 25px 80px rgba(2, 6, 23, 0.65);
  font-size: 16px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: 'Segoe UI', 'Inter', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--text-main);
  background: radial-gradient(circle at top, #1e3a8a 0%, #030712 55%, #020617 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.wheel-app {
  width: min(1200px, 100%);
  display: grid;
  grid-template-columns: minmax(280px, 520px) minmax(260px, 1fr);
  gap: clamp(2rem, 4vw, 4rem);
  align-items: center;
}

.wheel-area {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

canvas {
  width: min(520px, 80vw);
  height: min(520px, 80vw);
  background: radial-gradient(circle, rgba(15, 23, 42, 0.9) 0%, rgba(2, 6, 23, 0.8) 100%);
  border-radius: 50%;
  box-shadow: var(--shadow-soft), inset 0 0 35px rgba(15, 23, 42, 0.8);
}

.pointer {
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translate(-50%, -100%);
  width: 0;
  height: 0;
  border-left: 22px solid transparent;
  border-right: 22px solid transparent;
  border-bottom: 32px solid var(--accent);
  filter: drop-shadow(0 6px 12px rgba(56, 189, 248, 0.45));
}

.pointer::after {
  content: '';
  position: absolute;
  top: 7px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 0;
  border-left: 14px solid transparent;
  border-right: 14px solid transparent;
  border-bottom: 20px solid #0f172a;
}

.control-panel {
  background: var(--panel-bg);
  border: 1px solid rgba(56, 189, 248, 0.2);
  border-radius: 28px;
  padding: clamp(1.5rem, 4vw, 2.5rem);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-soft);
}

.control-panel h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.75rem, 2.5vw, 2.25rem);
}

.control-panel p {
  margin: 0 0 1.5rem;
  color: var(--text-muted);
  font-size: 1rem;
}

.spin-button {
  width: 100%;
  padding: 1rem 1.25rem;
  border-radius: 999px;
  border: none;
  font-size: 1.1rem;
  font-weight: 600;
  color: #0c111d;
  background: linear-gradient(120deg, var(--accent), var(--accent-strong));
  cursor: pointer;
  box-shadow: var(--shadow-soft);
  transition: transform 200ms ease, box-shadow 200ms ease;
}

.spin-button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.spin-button:not(:disabled):hover {
  transform: translateY(-2px) scale(1.01);
}

.spin-button:not(:disabled):active {
  transform: translateY(1px) scale(0.99);
}

.sound-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin-top: 1.5rem;
  font-size: 0.95rem;
  color: var(--text-muted);
}

.sound-toggle input {
  width: 1.1rem;
  height: 1.1rem;
}

.result-text {
  display: block;
  margin-top: 2rem;
  padding: 1rem 1.25rem;
  background: rgba(2, 6, 23, 0.65);
  border: 1px solid rgba(56, 189, 248, 0.2);
  border-radius: 18px;
  min-height: 4.2rem;
  font-size: 1rem;
  line-height: 1.4;
}

.result-text strong {
  font-size: 1.1rem;
}

.credits {
  margin-top: 2rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}

@media (max-width: 960px) {
  body {
    padding: 1.5rem;
  }

  .wheel-app {
    grid-template-columns: 1fr;
    justify-items: center;
  }

  .control-panel {
    width: min(520px, 100%);
  }
}

@media (max-width: 540px) {
  canvas {
    width: min(360px, 90vw);
    height: min(360px, 90vw);
  }

  .pointer {
    border-left-width: 16px;
    border-right-width: 16px;
    border-bottom-width: 24px;
  }
}