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

:root {
  --primary-color: #27ae60;
  --secondary-color: #3498db;
  --danger-color: #e74c3c;
  --warning-color: #f39c12;
  --success-color: #27ae60;
  --info-color: #3498db;
  --light-bg: #ecf0f1;
  --text-color: #2c3e50;
  --border-color: #bdc3c7;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  padding: 20px;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  background: white;
  border-radius: 15px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
  overflow: hidden;
}

header {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 40px 30px;
  text-align: center;
}

header h1 {
  font-size: 2.2rem;
  margin-bottom: 10px;
  font-weight: 700;
}

header p {
  font-size: 1.1rem;
  opacity: 0.95;
}

form {
  padding: 40px;
}

.form-section {
  margin-bottom: 35px;
  padding: 25px;
  background: #f8f9fa;
  border-left: 5px solid var(--primary-color);
  border-radius: 8px;
}

.form-section:last-of-type {
  margin-bottom: 0;
}

.form-section h3 {
  color: var(--text-color);
  margin-bottom: 20px;
  font-size: 1.3rem;
  display: flex;
  align-items: center;
  gap: 10px;
}

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

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  color: var(--text-color);
  font-size: 0.95rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 15px;
  border: 2px solid var(--border-color);
  border-radius: 6px;
  font-size: 16px;
  transition: all 0.3s ease;
  font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 8px rgba(39, 174, 96, 0.2);
  background-color: #f0f9f0;
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.form-group small {
  display: block;
  margin-top: 5px;
  color: #7f8c8d;
  font-size: 0.85rem;
}

.radio-group,
.checkbox-group {
  display: flex;
  gap: 20px;
  margin-top: 10px;
  flex-wrap: wrap;
}

.radio-group label,
.checkbox-group label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: normal;
  margin-bottom: 0;
  cursor: pointer;
}

.radio-group input[type="radio"],
.checkbox-group input[type="checkbox"] {
  width: auto;
  padding: 0;
  margin: 0;
  cursor: pointer;
}

.checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-weight: normal !important;
  background: #fffacd;
  padding: 15px;
  border-radius: 6px;
  border-left: 4px solid var(--warning-color);
  line-height: 1.5;
}

.checkbox-label input[type="checkbox"] {
  margin-top: 2px;
  cursor: pointer;
}

.form-actions {
  display: flex;
  gap: 15px;
  margin-top: 30px;
}

.submit-btn,
.reset-btn {
  flex: 1;
  padding: 14px 30px;
  border: none;
  border-radius: 6px;
  font-size: 1.05rem;
  cursor: pointer;
  transition: all 0.3s ease;
  font-weight: 600;
}

.submit-btn {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
}

.submit-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(39, 174, 96, 0.3);
}

.submit-btn:disabled {
  background: #95a5a6;
  cursor: not-allowed;
  opacity: 0.6;
}

.reset-btn {
  background: var(--light-bg);
  color: var(--text-color);
  border: 2px solid var(--border-color);
}

.reset-btn:hover {
  background: var(--border-color);
}

.message {
  margin-top: 20px;
  padding: 15px 20px;
  border-radius: 6px;
  text-align: center;
  font-weight: 600;
  display: none;
  animation: slideIn 0.3s ease;
}

.message.success {
  background: #d4edda;
  color: #155724;
  border: 2px solid #28a745;
  display: block;
}

.message.error {
  background: #f8d7da;
  color: #721c24;
  border: 2px solid #f5c6cb;
  display: block;
}

.message.info {
  background: #d1ecf1;
  color: #0c5460;
  border: 2px solid #bee5eb;
  display: block;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

footer {
  background: #ecf0f1;
  padding: 20px 40px;
  text-align: center;
  border-top: 1px solid var(--border-color);
  color: #7f8c8d;
  font-size: 0.95rem;
}

footer p {
  margin: 8px 0;
}

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

  .container {
    border-radius: 10px;
  }

  header {
    padding: 30px 20px;
  }

  header h1 {
    font-size: 1.8rem;
  }

  header p {
    font-size: 1rem;
  }

  form,
  footer {
    padding: 20px;
  }

  .form-section {
    padding: 15px;
    margin-bottom: 20px;
  }

  .form-section h3 {
    font-size: 1.1rem;
    margin-bottom: 15px;
  }

  .form-actions {
    flex-direction: column;
  }

  .radio-group {
    flex-direction: column;
    gap: 10px;
  }

  .checkbox-label {
    padding: 12px;
    font-size: 0.95rem;
  }
}

/* Loading state */
.submit-btn.loading {
  position: relative;
  color: transparent;
}

.submit-btn.loading::after {
  content: '⏳';
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}

/* Print styles */
@media print {
  body {
    background: white;
  }

  .submit-btn,
  .reset-btn {
    display: none;
  }
}