body {
  font-family: Arial, sans-serif;
  text-align: center;
  margin: 0;
  background: #ffe600;
}

header {
  background: #3483fa;
  color: #ffffff;
  padding: 15px;
  font-size: 20px;
  font-weight: bold;
}

.landing-shell {
  min-height: calc(100vh - 58px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  box-sizing: border-box;
}

.card {
  width: 100%;
  max-width: 520px;
  background: #ffffff;
  padding: 32px 24px 36px;
  border-radius: 20px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

h1 {
  margin: 0 0 12px;
  color: #333333;
}

p {
  color: #555555;
  line-height: 1.5;
  margin: 0 0 10px;
}

.wheel-container {
  position: relative;
  display: inline-block;
  margin-top: 12px;
}

canvas {
  margin-top: 30px;
  background: #ffffff;
  border-radius: 50%;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  max-width: 100%;
  height: auto;
}

.pointer {
  position: absolute;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 0;
  border-left: 15px solid transparent;
  border-right: 15px solid transparent;
  border-top: 25px solid #ff3d00;
  z-index: 10;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.4));
}

button {
  margin-top: 25px;
  padding: 14px 40px;
  font-size: 18px;
  border: none;
  background: #3483fa;
  color: #ffffff;
  border-radius: 8px;
  cursor: pointer;
  font-weight: bold;
}

button:hover {
  background: #2968c8;
}

button[disabled] {
  opacity: 0.8;
  cursor: wait;
}

.modal {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(0, 0, 0, 0.55);
  box-sizing: border-box;
  z-index: 30;
}

.modal[hidden] {
  display: none;
}

.modal-card {
  width: 100%;
  max-width: 360px;
  background: #ffffff;
  border-radius: 18px;
  padding: 28px 22px;
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.24);
}

.modal-card h2 {
  margin: 0;
  color: #222222;
  font-size: 30px;
  line-height: 1.25;
}

.modal-card button {
  width: 100%;
}

@media (max-width: 540px) {
  .card {
    padding: 26px 14px 30px;
  }

  .wheel-container,
  canvas {
    width: 100%;
    max-width: 340px;
  }
}