:root {
  --primary-color: #4f46e5;
  --secondary-color: #2563eb;
  --accent-color: #10b981;
  --border-color: #e2e8f0;
  --text-color: #1f2937;
  --light-text-color: #4b5563;
  --background-color: #ffffff;
  --light-background-color: #f9fafb;
  --highlight-color: #fff9c4;
  --bright-highlight-color: #ffeb3b;
  --error-color: #ef4444;
  --warning-color: #f59e0b;
  --success-color: #10b981;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--light-background-color);
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 15px;
}

.app-header {
  text-align: center;
  margin-bottom: 20px;
  padding-bottom: 15px;
  border-bottom: 1px solid var(--border-color);
}

.app-header h1 {
  font-size: 24px;
  margin-bottom: 6px;
  color: var(--primary-color);
}

.app-header p {
  font-size: 14px;
  color: var(--light-text-color);
  max-width: 800px;
  margin: 0 auto;
}

.app-body {
  display: flex;
  gap: 20px;
  margin-bottom: 20px;
  align-items: stretch;
  height: 600px;
}

.form-panel, .preview-panel {
  flex: 1;
  background-color: var(--background-color);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 16px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  height: 600px;
  max-height: 600px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.preview-panel {
  position: relative;
}

.preview-content {
  flex: 1;
  overflow-y: auto;
}

.preview-content h2 {
  font-size: 16px;
  margin-bottom: 10px;
  color: var(--primary-color);
}

.document-preview {
  font-family: 'Times New Roman', Times, serif;
  white-space: pre-wrap;
  line-height: 1.5;
  font-size: 14px;
}

.highlighted-text {
  background-color: var(--highlight-color);
  display: inline-block;
  padding: 2px 0;
  animation: highlight 2s;
}

@keyframes highlight {
  0% { background-color: var(--bright-highlight-color); }
  100% { background-color: var(--highlight-color); }
}

.tab-navigation {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 20px;
}

.tab-button {
  padding: 8px 12px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background-color: var(--background-color);
  color: var(--text-color);
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  transition: all 0.2s ease;
}

.tab-button.active {
  background-color: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

.tab-button:hover:not(.active) {
  background-color: var(--light-background-color);
  border-color: var(--primary-color);
}

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

.form-section h3 {
  font-size: 16px;
  margin-bottom: 10px;
  color: var(--primary-color);
}

.form-group {
  margin-bottom: 12px;
}

.form-group label {
  display: block;
  margin-bottom: 4px;
  font-weight: 500;
  font-size: 13px;
}

.form-control {
  width: 100%;
  padding: 8px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 14px;
  transition: border-color 0.2s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-color);
}

.form-check {
  display: flex;
  align-items: center;
  margin-bottom: 8px;
}

.form-check input[type="checkbox"],
.form-check input[type="radio"] {
  margin-right: 8px;
}

textarea.form-control {
  min-height: 80px;
  resize: vertical;
}

.navigation-buttons {
  display: flex;
  justify-content: space-between;
  margin-top: 20px;
}

.nav-button {
  display: flex;
  align-items: center;
  padding: 8px 15px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background-color: var(--background-color);
  color: var(--text-color);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.nav-button:hover:not(.disabled) {
  background-color: var(--light-background-color);
  border-color: var(--primary-color);
}

.nav-button.disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.next-button {
  background-color: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

.next-button:hover {
  background-color: var(--secondary-color) !important;
  border-color: var(--secondary-color) !important;
}

.risk-assessment {
  margin-top: 30px;
  padding: 20px;
  border-radius: 8px;
  background-color: var(--light-background-color);
}

.risk-item {
  margin-bottom: 15px;
  padding: 15px;
  border-radius: 6px;
  border-left: 4px solid var(--border-color);
}

.risk-item.high-risk {
  background-color: rgba(239, 68, 68, 0.1);
  border-left-color: var(--error-color);
}

.risk-item.medium-risk {
  background-color: rgba(245, 158, 11, 0.1);
  border-left-color: var(--warning-color);
}

.risk-item.low-risk {
  background-color: rgba(16, 185, 129, 0.1);
  border-left-color: var(--success-color);
}

.risk-item h4 {
  font-size: 16px;
  margin-bottom: 8px;
}

.risk-item p {
  font-size: 14px;
  color: var(--light-text-color);
}

.tip {
  padding: 15px;
  margin-top: 20px;
  background-color: rgba(79, 70, 229, 0.1);
  border-left: 4px solid var(--primary-color);
  border-radius: 6px;
}

.tip h4 {
  font-size: 16px;
  margin-bottom: 8px;
  color: var(--primary-color);
}

.tip p {
  font-size: 14px;
  color: var(--light-text-color);
}

@media (max-width: 992px) {
  .app-body {
    flex-direction: column;
    height: auto;
  }
  
  .form-panel, 
  .preview-panel {
    width: 100%;
    height: 450px;
    max-height: 450px;
  }
}

@media (max-width: 768px) {
  .navigation-buttons {
    flex-wrap: wrap;
    gap: 10px;
  }
  
  .nav-button {
    flex: 1;
    justify-content: center;
  }
}