:root {
  --bg-main: #f4f4f4;
  --bg-secondary: #e6e6e6;
  --text-main: #2f2f2f;
  --text-muted: #666666;
  --accent: #6f6f6f;
  --accent-hover: #555555;
  --border-soft: #cccccc;
}

* {
  box-sizing: border-box;
  font-family: 'Segoe UI', sans-serif;
}

body {
  margin: 0;
  background: linear-gradient(135deg, var(--bg-main), var(--bg-secondary));
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.screen {
  display: none;
  text-align: center;
  padding: 20px;
  max-width: 360px;
  animation: fadeIn 0.6s ease;
}

.screen.active {
  display: block;
}

.envelope {
  font-size: 90px;
  cursor: pointer;
  transition: transform 0.3s ease;
}

.envelope:hover {
  transform: scale(1.1);
}

h1, h2 {
  color: var(--text-main);
}

.message,
.hint {
  color: var(--text-muted);
}

button:hover {
  background: var(--accent-hover);
  opacity: 0.9;
}

button {
  background: var(--accent);
  color: white;
  border: none;
  padding: 12px 20px;
  border-radius: 25px;
  font-size: 16px;
  cursor: pointer;
  transition: background 0.3s ease;
}

.gift {
  font-size: 22px;
  margin: 20px 0;
  color: #333;
}

.whatsapp-btn {
  display: inline-block;
  margin-top: 15px;
  text-decoration: none;
  background: #25D366;
  color: white;
  padding: 12px 18px;
  border-radius: 25px;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.wheel-container {
  position: relative;
  margin: 20px auto;
  width: 360px;
}

.pointer {
  color: var(--text-main);
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 26px;
}

.result {
  margin-top: 15px;
  font-size: 18px;
  color: var(--text-main);
  font-weight: bold;
}

.hidden {
  display: none;
}

button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}