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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: #FAFAFA;
  color: #1F2020;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: 20px;
}

.container {
  width: 100%;
  max-width: 420px;
  margin-top: 5vh;
}

header {
  text-align: center;
  margin-bottom: 24px;
}

.logo {
  font-size: 1.6rem;
  font-weight: 700;
  color: #307498;
}

.logo span {
  display: block;
  font-size: 0.9rem;
  font-weight: 400;
  color: #545454;
  margin-top: 2px;
}

.standort {
  margin-top: 8px;
  font-size: 0.85rem;
  color: #545454;
}

/* Package selection */
.pakete-label {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: #545454;
  text-align: center;
  margin-bottom: 12px;
}

.pakete-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 20px;
}

.paket-card {
  background: white;
  border: 2px solid #e0e0e0;
  border-radius: 12px;
  padding: 16px 12px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  user-select: none;
}

.paket-card:hover {
  border-color: #7192A7;
}

.paket-card.selected {
  border-color: #307498;
  background: #f0f7fb;
  box-shadow: 0 0 0 1px #307498;
}

.paket-name {
  font-size: 0.85rem;
  font-weight: 600;
  color: #1F2020;
  margin-bottom: 4px;
}

.paket-preis {
  font-size: 1.6rem;
  font-weight: 700;
  color: #307498;
}

.paket-info {
  font-size: 0.7rem;
  color: #999;
  margin-top: 4px;
}

/* Upgrade banner */
.upgrade-banner {
  background: #fef3c7;
  border: 2px solid #f59e0b;
  border-radius: 12px;
  padding: 14px 16px;
  text-align: center;
  margin-bottom: 12px;
  font-size: 0.85rem;
  color: #92400e;
}

.upgrade-banner.valid {
  background: #dcfce7;
  border-color: #22c55e;
  color: #166534;
}

.upgrade-banner strong {
  font-size: 0.9rem;
}

.upgrade-banner span {
  font-size: 0.8rem;
}

form {
  background: white;
  border-radius: 12px;
  padding: 24px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.field {
  margin-bottom: 16px;
}

.field label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: #1F2020;
}

.field input {
  width: 100%;
  padding: 14px 16px;
  font-size: 1.1rem;
  font-family: 'Inter', sans-serif;
  border: 2px solid #e0e0e0;
  border-radius: 8px;
  outline: none;
  transition: border-color 0.2s;
  text-transform: uppercase;
}

.field input:focus {
  border-color: #307498;
}

.rabatt-toggle {
  margin-bottom: 16px;
  text-align: center;
}

.rabatt-toggle a {
  font-size: 0.85rem;
  color: #307498;
  text-decoration: none;
}

.rabatt-toggle a:hover {
  text-decoration: underline;
}

.btn-pay {
  width: 100%;
  padding: 16px;
  font-size: 1.1rem;
  font-weight: 700;
  font-family: 'Inter', sans-serif;
  color: white;
  background: #307498;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.2s;
  margin-top: 8px;
}

.btn-pay:hover {
  background: #256080;
}

.btn-pay:disabled {
  background: #a0bfcf;
  cursor: not-allowed;
}

.error {
  margin-top: 16px;
  padding: 12px;
  background: #fef2f2;
  color: #b91c1c;
  border-radius: 8px;
  font-size: 0.85rem;
  text-align: center;
}

.trust {
  text-align: center;
  margin-top: 14px;
  font-size: 0.78rem;
  color: #6b7280;
}

footer {
  text-align: center;
  margin-top: 32px;
  font-size: 0.75rem;
  color: #999;
}

@media (max-width: 480px) {
  .paket-preis { font-size: 1.4rem; }
}