:root {
  --prognosi-primary: #fd7e14;
  --prognosi-secondary: #e83e8c;
  --prognosi-accent: #ffc107;
  --prognosi-light: #fff3e0;
  --prognosi-dark: #d15502;
  --border-color: #e9ecef;
  --shadow: 0 8px 32px rgba(0,0,0,0.1);
  --shadow-hover: 0 12px 40px rgba(0,0,0,0.15);
}

/* Contenitori principali */
.prognosi-container,
.ppi-container,
.pap-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

.prognosi-header,
.ppi-header,
.pap-header {
  text-align: center;
  margin-bottom: 2rem;
}

.prognosi-header h1,
.ppi-header h1,
.pap-header h1 {
  color: var(--prognosi-primary);
  font-size: 2.5rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

/* Mode selector */
.mode-selector {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 2rem;
}

.mode-btn {
  padding: 1rem 2rem;
  background: white;
  border: 2px solid var(--border-color);
  border-radius: 12px;
  text-decoration: none;
  color: #6c757d;
  font-weight: 500;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.mode-btn:hover {
  border-color: var(--prognosi-primary);
  color: var(--prognosi-primary);
  text-decoration: none;
}

.mode-btn.active {
  background: var(--prognosi-primary);
  border-color: var(--prognosi-primary);
  color: white;
}

/* Content sections */
.content-section {
  display: none;
}

.content-section.active {
  display: block;
}

/* Grid per strumenti */
.prognosi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

/* Tool cards */
.tool-card {
  background: white;
  border-radius: 16px;
  border: 2px solid var(--border-color);
  padding: 2rem;
  box-shadow: 0 6px 24px rgba(0,0,0,0.08);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.tool-card.ppi {
  border-color: #e74c3c;
}

.tool-card.pap {
  border-color: #9b59b6;
}

.tool-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--prognosi-primary), var(--prognosi-dark));
}

.tool-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 36px rgba(0,0,0,0.15);
}

.tool-header {
  display: flex;
  align-items: center;
  margin-bottom: 1.5rem;
}

.tool-icon-large {
  width: 80px;
  height: 80px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 1.5rem;
  color: white;
  font-size: 2rem;
  font-weight: 700;
  text-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.ppi-icon {
  background: linear-gradient(135deg, #e74c3c, #c0392b);
}

.pap-icon {
  background: linear-gradient(135deg, #9b59b6, #8e44ad);
}

.tool-info h4 {
  font-size: 2.2rem;
  font-weight: 700;
  color: #2c3e50;
  margin-bottom: 0.5rem;
}

.tool-subtitle {
  font-size: 1.1rem;
  color: #7f8c8d;
  font-weight: 500;
  letter-spacing: 0.5px;
}

.tool-description {
  font-size: 1.1rem;
  line-height: 1.6;
  color: #34495e;
  margin-bottom: 2rem;
}

.tool-features {
  background: rgba(46, 204, 113, 0.1);
  border-radius: 12px;
  padding: 1rem 1.5rem;
  margin-bottom: 2rem;
  border: 1px solid rgba(46, 204, 113, 0.2);
  display: block;
}

.feature-badge {
  color: #27ae60;
  font-weight: 600;
  font-size: 1rem;
  background: none;
  border: none;
  padding: 0;
  border-radius: 0;
}

.tool-actions {
  display: flex;
  gap: 1rem;
}

.btn-action {
  flex: 1;
  padding: 1.2rem 2rem;
  border-radius: 12px;
  font-weight: 600;
  font-size: 1.1rem;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.8rem;
  border: none;
  cursor: pointer;
}

.btn-primary {
  color: white;
  box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.ppi-icon ~ * .btn-primary,
.tool-card:has(.ppi-icon) .btn-primary {
  background: linear-gradient(135deg, #e74c3c, #c0392b);
}

.pap-icon ~ * .btn-primary,
.tool-card:has(.pap-icon) .btn-primary {
  background: linear-gradient(135deg, #9b59b6, #8e44ad);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0,0,0,0.25);
}

.btn-outline-primary {
  background: white;
  border: 2px solid;
}

.tool-card.ppi .btn-outline-primary {
  border-color: #e74c3c;
  color: #e74c3c;
}

.tool-card.pap .btn-outline-primary {
  border-color: #9b59b6;
  color: #9b59b6;
}

.btn-outline-primary:hover {
  background-color: rgba(0,0,0,0.05);
  transform: translateY(-2px);
}

/* Patient info card */
.patient-info-card {
  background: #f8f9fa;
  border-radius: 12px;
  padding: 1.5rem;
  margin-bottom: 2rem;
  border-left: 4px solid var(--prognosi-primary);
}

.patient-info-card h4 {
  color: var(--prognosi-primary);
  margin-bottom: 1rem;
  font-weight: 600;
}

/* Form card */
.form-card {
  background: white;
  border-radius: 12px;
  padding: 2rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--border-color);
}

.form-card h4 {
  color: var(--prognosi-primary);
  margin-bottom: 1.5rem;
  font-weight: 600;
}

/* Progress indicator */
.progress-indicator {
  margin-bottom: 2rem;
}

.progress-bar {
  background: #e9ecef;
  border-radius: 10px;
  height: 8px;
  margin-bottom: 0.5rem;
}

.progress-fill {
  background: linear-gradient(90deg, var(--prognosi-primary), var(--prognosi-secondary));
  height: 100%;
  border-radius: 10px;
  transition: width 0.3s ease;
}

/* Form items */
.form-item {
  background: #f8f9fa;
  border-radius: 12px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  border-left: 4px solid var(--border-color);
  transition: all 0.3s ease;
}

.form-item.completed {
  border-left-color: #28a745;
  background: #f0f9ff;
}

.form-label {
  display: block;
  font-weight: 600;
  margin-bottom: 1rem;
  color: #495057;
  font-size: 1rem;
}

/* Radio groups */
.radio-group {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.radio-option {
  display: flex;
  align-items: center;
  cursor: pointer;
  padding: 0.8rem 1.2rem;
  border: 2px solid var(--border-color);
  border-radius: 25px;
  transition: all 0.3s ease;
  background: white;
  min-width: 180px;
  justify-content: center;
  text-align: center;
}

.radio-option:hover {
  border-color: var(--prognosi-primary);
  background: var(--prognosi-light);
  transform: translateY(-2px);
}

.radio-option.selected {
  border-color: #28a745;
  background: #d4edda;
  color: #155724;
  font-weight: 600;
}

/* Score display */
.score-display {
  background: linear-gradient(135deg, var(--prognosi-primary), var(--prognosi-secondary));
  border-radius: 16px;
  padding: 2rem;
  margin: 2rem 0;
  color: white;
  text-align: center;
  box-shadow: var(--shadow);
}

.score-header h3 {
  margin-bottom: 1rem;
  font-weight: 600;
}

.score-number {
  font-size: 3rem;
  font-weight: bold;
  margin-bottom: 0.5rem;
}

.score-interpretation {
  font-size: 1.2rem;
  margin-bottom: 1rem;
  font-weight: 500;
}

.score-description {
  font-size: 1rem;
  opacity: 0.9;
}

/* Action buttons */
.action-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 2rem;
}

.action-buttons .btn {
  padding: 0.75rem 2rem;
  border-radius: 8px;
  font-weight: 500;
  transition: all 0.3s ease;
}

.action-buttons .btn:hover {
  transform: translateY(-2px);
}

/* Scale reference */
.scale-reference {
  background: white;
  border-radius: 12px;
  padding: 2rem;
  box-shadow: var(--shadow);
}

.scale-reference h4 {
  color: var(--prognosi-primary);
  margin-bottom: 2rem;
  font-weight: 600;
}

/* Scale table */
.scale-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  font-size: 0.9rem;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.scale-table th,
.scale-table td {
  border: 1px solid var(--border-color);
  padding: 1rem;
  text-align: left;
}

.scale-table th {
  background: var(--prognosi-primary);
  color: white;
  font-weight: 600;
}

.scale-table tbody tr:nth-child(even) {
  background: #f8f9fa;
}

.scale-table tbody tr:hover {
  background: var(--prognosi-light);
}

/* Interpretation box */
.interpretation-box {
  background: var(--prognosi-light);
  border-radius: 12px;
  padding: 1.5rem;
  margin-top: 2rem;
  border-left: 4px solid var(--prognosi-primary);
}

.interpretation-box h5 {
  color: var(--prognosi-dark);
  margin-bottom: 1rem;
  font-weight: 600;
}

.interpretation-box ul {
  margin: 0;
  padding-left: 1.5rem;
  color: #666;
}

.interpretation-box li {
  margin-bottom: 0.5rem;
  line-height: 1.5;
}

/* Reference section */
.reference-content {
  background: white;
  border-radius: 12px;
  padding: 2rem;
  box-shadow: var(--shadow);
}

.reference-content h3 {
  color: var(--prognosi-primary);
  margin-bottom: 2rem;
  font-weight: 600;
}

.reference-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.reference-card {
  background: #f8f9fa;
  border-radius: 8px;
  padding: 1.5rem;
  border-left: 4px solid var(--prognosi-secondary);
}

.reference-card h5 {
  color: var(--prognosi-dark);
  margin-bottom: 1rem;
  font-weight: 600;
}

.reference-card p {
  color: #666;
  margin: 0;
  line-height: 1.5;
}

/* Clinical criteria */
.clinical-criteria h4 {
  color: var(--prognosi-primary);
  margin-bottom: 1.5rem;
  font-weight: 600;
}

.criteria-list {
  display: grid;
  gap: 1rem;
}

.criteria-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  background: #f8f9fa;
  padding: 1rem;
  border-radius: 8px;
}

.criteria-item i {
  margin-top: 0.2rem;
  font-size: 1.2rem;
}

.criteria-item strong {
  color: var(--prognosi-dark);
  display: block;
  margin-bottom: 0.5rem;
}

.criteria-item p {
  margin: 0;
  color: #666;
}

/* Responsive design */
@media (max-width: 768px) {
  .prognosi-container,
  .ppi-container,
  .pap-container {
    padding: 1rem;
  }
  
  .prognosi-grid {
    grid-template-columns: 1fr;
  }
  
  .mode-selector {
    flex-direction: column;
    align-items: center;
  }
  
  .mode-btn {
    width: 100%;
    max-width: 300px;
    justify-content: center;
  }
  
  .tool-header {
    flex-direction: column;
    text-align: center;
  }
  
  .tool-icon-large {
    margin-right: 0;
    margin-bottom: 1rem;
  }
  
  .tool-actions {
    flex-direction: column;
  }
  
  .radio-group {
    flex-direction: column;
  }
  
  .radio-option {
    min-width: auto;
    width: 100%;
  }
  
  .action-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .action-buttons .btn {
    width: 100%;
    max-width: 250px;
  }
  
  .reference-grid {
    grid-template-columns: 1fr;
  }
  
  .criteria-item {
    flex-direction: column;
    text-align: center;
  }
}