@import url(https://fonts.googleapis.com/css?family=Inter:100,200,300,regular,500,600,700,800,900,100italic,200italic,300italic,italic,500italic,600italic,700italic,800italic,900italic);

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Inter", sans-serif;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #0f172a;
  padding: 20px;
}

.container {
  width: 100%;
  max-width: 500px;
}

.card {
  background: #1e293b;
  padding: 40px;
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  border: 1px solid #334155;
}

h1 {
  font-size: 1.8rem;
  font-weight: 700;
  color: #f1f5f9;
  margin-bottom: 8px;
  text-align: center;
}

.subtitle {
  color: #94a3b8;
  font-size: 0.95rem;
  text-align: center;
  margin-bottom: 32px;
}

.input-section {
  margin-bottom: 20px;
}

textarea {
  width: 100%;
  padding: 16px;
  font-size: 1rem;
  font-family: "Inter", sans-serif;
  background: #0f172a;
  border: 1px solid #334155;
  border-radius: 12px;
  outline: none;
  resize: vertical;
  color: #f1f5f9;
  transition: border-color 0.2s ease;
}

textarea:focus {
  border-color: #3b82f6;
}

textarea::placeholder {
  color: #64748b;
}

.options {
  margin-bottom: 24px;
}

.option-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.option-group label {
  font-size: 0.9rem;
  font-weight: 500;
  color: #cbd5e1;
}

select {
  padding: 10px 14px;
  font-size: 0.9rem;
  font-family: "Inter", sans-serif;
  border: 1px solid #334155;
  border-radius: 10px;
  outline: none;
  background: #0f172a;
  color: #f1f5f9;
  cursor: pointer;
  transition: border-color 0.2s ease;
}

select:focus {
  border-color: #3b82f6;
}

.generate-btn {
  width: 100%;
  padding: 16px;
  font-size: 1rem;
  font-weight: 600;
  font-family: "Inter", sans-serif;
  background: #3b82f6;
  color: #fff;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  transition:
    background 0.2s ease,
    transform 0.2s ease;
  margin-bottom: 32px;
}

.generate-btn:hover {
  background: #2563eb;
  transform: translateY(-2px);
}

.generate-btn:active {
  transform: translateY(0);
}

.qr-section {
  display: none;
  text-align: center;
}

.qr-section.show {
  display: block;
}

.qr-container {
  background: #fff;
  padding: 20px;
  border-radius: 16px;
  border: 1px solid #334155;
  display: inline-block;
  margin-bottom: 20px;
}

.download-btn {
  padding: 14px 32px;
  font-size: 1rem;
  font-weight: 500;
  font-family: "Inter", sans-serif;
  background: #334155;
  color: #fff;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  transition: background 0.2s ease;
}

.download-btn:hover {
  background: #475569;
}

@media (max-width: 480px) {
  .card {
    padding: 28px 20px;
  }

  h1 {
    font-size: 1.5rem;
  }
}