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

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #f5f5f5 0%, #d0d0d0 100%);
  min-height: 100vh;
  padding: 20px;
}

.container {
  max-width: 800px;
  margin: 0 auto;
}

.form-container {
  background: white;
  border-radius: 12px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
  overflow: hidden;
}

.header {
  background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
  color: white;
  padding: 30px;
  text-align: center;
}

.header h1 {
  font-size: 2.5rem;
  margin-bottom: 10px;
  font-weight: 300;
}

.header p {
  font-size: 1.1rem;
  opacity: 0.9;
}

.alert {
  padding: 15px;
  margin: 20px 30px;
  border-radius: 8px;
  font-weight: 500;
}

.alert-success {
  background-color: #d4edda;
  color: #155724;
  border: 1px solid #c3e6cb;
}

.alert-error {
  background-color: #f8d7da;
  color: #721c24;
  border: 1px solid #f5c6cb;
}

form {
  padding: 30px;
}

.section {
  margin-bottom: 40px;
}

.section h3 {
  color: #2c3e50;
  font-size: 1.4rem;
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid #ecf0f1;
}

.form-group {
  margin-bottom: 20px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  color: #34495e;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid #ecf0f1;
  border-radius: 8px;
  font-size: 16px;
  transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: #667eea;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-group small {
  display: block;
  margin-top: 5px;
  color: #7f8c8d;
  font-size: 14px;
}

.checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.checkbox-group input[type="checkbox"] {
  width: auto;
  margin-top: 4px;
  transform: scale(1.2);
}

.checkbox-group label {
  flex: 1;
  line-height: 1.6;
  color: #2c3e50;
}

.submit-btn {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 16px 40px;
  border: none;
  border-radius: 8px;
  font-size: 18px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  width: 100%;
}

.submit-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(102, 126, 234, 0.3);
}

@media (max-width: 768px) {
  .form-row {
    grid-template-columns: 1fr;
  }

  .header h1 {
    font-size: 2rem;
  }

  form {
    padding: 20px;
  }
}