body {
  font-family: Arial, sans-serif;
  max-width: 600px;
  margin: 20px auto;
  background-color: #fff9f0; /* кремовий фон */
  color: #222;
  padding: 1rem;
  box-sizing: border-box;
}

.container {
  padding: 1.5rem;
  border-radius: 12px;
  background-color: #fff;
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.1);
}

.section {
  margin: 1.5rem 0;
}

#walletAddress {
  font-family: monospace;
  font-weight: bold;
  margin-top: 0.5rem;
  word-break: break-word;
}

#mobileNotice {
  color: #d93025;
  font-weight: 700;
  display: none;
  margin-top: 0.5rem;
}

#countdown {
  font-weight: 700;
  color: #003366;
  font-size: 1.2rem;
}

button {
  background: linear-gradient(135deg, #3a7bd5, #00d2ff);
  color: white;
  border: none;
  padding: 1.2rem 2rem;
  border-radius: 15px;
  cursor: pointer;
  font-size: 1.25rem;
  font-weight: 600;
  box-shadow: 0 6px 12px rgba(58, 123, 213, 0.5);
  transition: background 0.3s ease, box-shadow 0.3s ease;
  user-select: none;
}

button:hover {
  background: linear-gradient(135deg, #00d2ff, #3a7bd5);
  box-shadow: 0 8px 16px rgba(0, 210, 255, 0.7);
}

button:active {
  box-shadow: 0 3px 6px rgba(0, 210, 255, 0.9);
  transform: translateY(2px);
}

input[type="number"] {
  padding: 0.9rem 1rem;
  width: 100%;
  font-size: 1.1rem;
  border: 1.8px solid #3a7bd5;
  border-radius: 12px;
  box-sizing: border-box;
  transition: border-color 0.3s ease;
}

input[type="number"]:focus {
  outline: none;
  border-color: #00d2ff;
  box-shadow: 0 0 8px #00d2ff;
}

.description p {
  line-height: 1.6;
  font-size: 1rem;
  color: #444;
}

/* Адаптивність для мобільних пристроїв */
@media (max-width: 480px) {
  body {
    margin: 10px;
    padding: 0.5rem;
  }

  .container {
    padding: 1rem;
  }

  button {
    width: 100%;
    font-size: 1.3rem;
    padding: 1.4rem 0;
  }

  input[type="number"] {
    font-size: 1.2rem;
    padding: 1.2rem;
  }
}