* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, Helvetica, sans-serif;
}

body {
  min-height: 100vh;

  display: flex;
  justify-content: center;
  align-items: center;

  background: linear-gradient(135deg, #4f46e5, #7c3aed, #9333ea);

  color: white;
}

.container {
  width: 90%;
  max-width: 800px;

  display: flex;
  flex-direction: column;

  justify-content: center;
  align-items: center;

  gap: 25px;
}

.container h1 {
  font-size: 3rem;
  text-align: center;
}

.author {
  font-size: 18px;
  color: #e2e8f0;
  letter-spacing: 1px;
  margin-bottom: 10px;
}

.card {
  width: 100%;

  background: rgba(255, 255, 255, 0.12);

  backdrop-filter: blur(15px);

  border: 1px solid rgba(255, 255, 255, 0.2);

  border-radius: 25px;

  padding: 30px;

  text-align: center;

  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.card h2 {
  margin-bottom: 20px;
}

.card h3 {
  margin-bottom: 20px;
}

.btn-group {
  display: flex;
  justify-content: center;
  gap: 15px;
}

button {
  padding: 12px 25px;

  border: none;

  border-radius: 12px;

  cursor: pointer;

  font-size: 16px;

  font-weight: bold;

  transition: 0.3s;
}

button:hover {
  transform: translateY(-4px);
}

.yes {
  background: #22c55e;
  color: white;
}

.no {
  background: #ef4444;
  color: white;
}

.generate-btn {
  background: #38bdf8;
  color: white;

  margin-top: 15px;
}

input {
  width: 100%;

  padding: 12px;

  border: none;

  border-radius: 12px;

  outline: none;

  font-size: 16px;
}

#qrcode {
  margin-top: 25px;

  display: flex;
  justify-content: center;
}

@media (max-width: 768px) {
  .container h1 {
    font-size: 2rem;
  }

  .btn-group {
    flex-direction: column;
  }
}