:root {
  --primary: #d9534f;
  --primary-dark: #c9302c;
  --secondary: #5bc0de;
  --bg: #f5f5f5;
  --card: #ffffff;
  --text: #333333;
  --text-light: #666666;
  --border: #dddddd;
  --success: #5cb85c;
  --error: #d9534f;
  --warning: #f0ad4e;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.6;
  padding: 20px;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  background: white;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  overflow: hidden;
}

/* Header */
.header {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
  padding: 40px 30px;
  text-align: center;
}

.logo {
  max-width: 180px;
  height: auto;
  margin-bottom: 20px;
  filter: brightness(0) invert(1);
}

.header h1 {
  font-size: 28px;
  margin-bottom: 10px;
  font-weight: 600;
}

.header h2 {
  font-size: 22px;
  margin-top: 20px;
  font-weight: 500;
}

.subtitle {
  font-size: 14px;
  opacity: 0.9;
  margin-top: 5px;
}

/* Form */
form {
  padding: 30px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 25px;
  margin-bottom: 25px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.card h3 {
  color: var(--primary);
  margin-bottom: 20px;
  font-size: 20px;
  border-bottom: 2px solid var(--primary);
  padding-bottom: 10px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
  margin-bottom: 15px;
}

.form-group {
  margin-bottom: 15px;
}

.form-group label {
  display: block;
  margin-bottom: 5px;
  font-weight: 500;
  color: var(--text);
  font-size: 14px;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="tel"],
.form-group input[type="date"],
.form-group input[type="number"] {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 5px;
  font-size: 15px;
  transition: border-color 0.3s, box-shadow 0.3s;
}

.form-group input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(217, 83, 79, 0.1);
}

.form-group input:invalid:not(:placeholder-shown) {
  border-color: var(--error);
}

.form-group small {
  display: block;
  margin-top: 5px;
  color: var(--text-light);
  font-size: 12px;
}

/* Info Box */
.info-box {
  background-color: #f9f9f9;
  border-left: 4px solid var(--primary);
  padding: 15px 20px;
  margin-bottom: 20px;
  font-size: 14px;
}

.info-box p {
  margin-bottom: 10px;
}

.info-box p:last-child {
  margin-bottom: 0;
}

.sepa-info {
  border-left-color: var(--secondary);
}

/* Checkbox */
.checkbox-group {
  margin-top: 15px;
}

.checkbox-group label {
  display: flex;
  align-items: flex-start;
  cursor: pointer;
  font-weight: 400;
}

.checkbox-group input[type="checkbox"] {
  margin-right: 10px;
  margin-top: 3px;
  width: 18px;
  height: 18px;
  cursor: pointer;
}

.checkbox-group a {
  color: var(--primary);
  text-decoration: none;
}

.checkbox-group a:hover {
  text-decoration: underline;
}

/* Buttons */
.form-actions {
  text-align: center;
  margin-top: 30px;
}

.btn-primary {
  background-color: var(--primary);
  color: white;
  padding: 15px 40px;
  border: none;
  border-radius: 5px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.3s, transform 0.1s;
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--primary-dark);
  transform: translateY(-1px);
}

.btn-primary:disabled {
  background-color: #ccc;
  cursor: not-allowed;
}

.hint {
  margin-top: 15px;
  color: var(--text-light);
  font-size: 13px;
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  animation: fadeIn 0.3s;
}

.modal-content {
  background-color: white;
  margin: 10% auto;
  padding: 30px;
  border-radius: 8px;
  max-width: 500px;
  position: relative;
  animation: slideDown 0.3s;
}

.close {
  position: absolute;
  right: 15px;
  top: 10px;
  font-size: 28px;
  font-weight: bold;
  color: #aaa;
  cursor: pointer;
}

.close:hover {
  color: #000;
}

#modalBody {
  text-align: center;
}

#modalBody h3 {
  margin-bottom: 15px;
  color: var(--primary);
}

#modalBody p {
  margin-bottom: 10px;
  line-height: 1.6;
}

.success-icon {
  color: var(--success);
  font-size: 48px;
  margin-bottom: 15px;
}

.error-icon {
  color: var(--error);
  font-size: 48px;
  margin-bottom: 15px;
}

/* Footer */
.footer {
  background-color: var(--text);
  color: white;
  text-align: center;
  padding: 20px;
  margin-top: 40px;
  font-size: 14px;
}

.footer a {
  color: white;
  text-decoration: none;
}

.footer a:hover {
  text-decoration: underline;
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Responsive */
@media (max-width: 768px) {
  body {
    padding: 10px;
  }

  .container {
    border-radius: 0;
  }

  form {
    padding: 20px;
  }

  .card {
    padding: 20px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .header {
    padding: 30px 20px;
  }

  .header h1 {
    font-size: 22px;
  }

  .header h2 {
    font-size: 18px;
  }

  .logo {
    max-width: 140px;
  }

  .btn-primary {
    width: 100%;
    padding: 15px;
  }

  .modal-content {
    margin: 20% 15px;
    padding: 20px;
  }
}

@media (max-width: 480px) {
  .header h1 {
    font-size: 20px;
  }

  .card h3 {
    font-size: 18px;
  }

  .info-box {
    padding: 12px 15px;
    font-size: 13px;
  }
}