/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: #333;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

/* Header Styles */
.header {
  text-align: center;
  margin-bottom: 40px;
  color: white;
}

.header-icon {
  font-size: 3rem;
  margin-bottom: 20px;
  opacity: 0.9;
}

.header-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 10px;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.header-subtitle {
  font-size: 1.1rem;
  opacity: 0.9;
  font-weight: 300;
}

/* Main Content */
.main-content {
  background: white;
  border-radius: 20px;
  padding: 40px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
  margin-bottom: 20px;
}

/* Upload Card */
.upload-card {
  text-align: center;
  padding: 40px;
  border: 2px dashed #e0e6ed;
  border-radius: 15px;
  background: #f8fafc;
  transition: all 0.3s ease;
  margin-bottom: 40px;
}

.upload-card:hover {
  border-color: #667eea;
  background: #f1f5f9;
}

.upload-icon {
  font-size: 3rem;
  color: #667eea;
  margin-bottom: 20px;
}

.upload-form {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

/* File Input Styles */
.file-input-wrapper {
  position: relative;
  width: 100%;
  max-width: 400px;
}

.file-input {
  position: absolute;
  opacity: 0;
  width: 100%;
  height: 100%;
  cursor: pointer;
}

.file-label {
  display: block;
  padding: 20px;
  background: #667eea;
  color: white;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.3s ease;
  text-align: center;
}

.file-label:hover {
  background: #5a67d8;
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.file-label-text {
  display: block;
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 5px;
}

.file-label-subtext {
  font-size: 0.9rem;
  opacity: 0.8;
}

/* Preview Styles */
.preview-container {
  text-align: center;
  padding: 20px;
  background: white;
  border-radius: 10px;
  border: 1px solid #e0e6ed;
}

.preview-image {
  max-width: 200px;
  max-height: 200px;
  border-radius: 8px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.preview-text {
  margin-top: 10px;
  color: #667eea;
  font-weight: 500;
}

/* Submit Button */
.submit-btn {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border: none;
  padding: 15px 30px;
  font-size: 1.1rem;
  font-weight: 600;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 10px;
}

.submit-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(102, 126, 234, 0.3);
}

/* Info Section */
.info-section {
  text-align: center;
  margin-top: 40px;
}

.info-section h3 {
  font-size: 1.5rem;
  margin-bottom: 30px;
  color: #2d3748;
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 30px;
  margin-top: 30px;
}

.info-item {
  text-align: center;
  padding: 20px;
}

.info-item i {
  font-size: 2rem;
  color: #667eea;
  margin-bottom: 15px;
}

.info-item h4 {
  font-size: 1.2rem;
  margin-bottom: 10px;
  color: #2d3748;
}

.info-item p {
  color: #718096;
}

/* Results Page Styles */
.results-summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  margin-bottom: 40px;
}

.result-card {
  background: white;
  padding: 30px;
  border-radius: 15px;
  text-align: center;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
  border: 1px solid #e0e6ed;
  transition: transform 0.3s ease;
}

.result-card:hover {
  transform: translateY(-5px);
}

.result-icon {
  font-size: 2.5rem;
  margin-bottom: 15px;
}

.prediction-card .result-icon {
  color: #48bb78;
}

.confidence-card .result-icon {
  color: #667eea;
}

.result-card h3 {
  font-size: 1.3rem;
  margin-bottom: 15px;
  color: #2d3748;
}

.prediction-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: #48bb78;
  text-transform: capitalize;
}

.confidence-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: #667eea;
  margin-bottom: 15px;
}

.confidence-bar {
  width: 100%;
  height: 8px;
  background: #e0e6ed;
  border-radius: 4px;
  overflow: hidden;
}

.confidence-fill {
  height: 100%;
  background: linear-gradient(90deg, #667eea, #48bb78);
  border-radius: 4px;
  transition: width 1s ease;
}

/* Comparison Section */
.comparison-section {
  margin-top: 40px;
}

.section-title {
  font-size: 1.8rem;
  text-align: center;
  margin-bottom: 30px;
  color: #2d3748;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.image-comparison {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 30px;
  align-items: center;
  margin-bottom: 30px;
}

.image-container {
  text-align: center;
}

.image-header {
  margin-bottom: 20px;
}

.image-header h3 {
  font-size: 1.3rem;
  color: #2d3748;
  margin-bottom: 5px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.image-header p {
  color: #718096;
  font-size: 0.9rem;
}

.image-wrapper {
  position: relative;
  display: inline-block;
  border-radius: 15px;
  overflow: hidden;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
  transition: transform 0.3s ease;
}

.image-wrapper:hover {
  transform: scale(1.02);
}

.comparison-image {
  width: 100%;
  max-width: 300px;
  height: auto;
  display: block;
}

.image-overlay {
  position: absolute;
  top: 10px;
  left: 10px;
  background: rgba(0, 0, 0, 0.7);
  color: white;
  padding: 5px 10px;
  border-radius: 5px;
  font-size: 0.8rem;
  font-weight: 600;
}

.comparison-divider {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.divider-line {
  width: 2px;
  height: 40px;
  background: #e0e6ed;
}

.divider-icon {
  background: #667eea;
  color: white;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

/* Explanation Card */
.explanation-card {
  background: #f8fafc;
  padding: 30px;
  border-radius: 15px;
  border-left: 4px solid #667eea;
  margin-bottom: 30px;
}

.explanation-card h3 {
  font-size: 1.3rem;
  color: #2d3748;
  margin-bottom: 15px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.explanation-card p {
  color: #4a5568;
  line-height: 1.7;
  margin-bottom: 20px;
}

.heatmap-legend {
  display: flex;
  align-items: center;
  gap: 15px;
  flex-wrap: wrap;
}

.legend-label {
  font-weight: 600;
  color: #2d3748;
}

.legend-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1;
  min-width: 200px;
}

.legend-gradient {
  height: 20px;
  width: 100px;
  background: linear-gradient(90deg, #3182ce, #38a169, #d69e2e, #e53e3e);
  border-radius: 10px;
  border: 1px solid #e0e6ed;
}

.legend-low,
.legend-high {
  font-size: 0.9rem;
  color: #718096;
  font-weight: 500;
}

/* Action Buttons */
.action-buttons {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  margin-top: 40px;
}

.btn {
  padding: 12px 24px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1rem;
}

.btn-primary {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(102, 126, 234, 0.3);
}

.btn-secondary {
  background: white;
  color: #667eea;
  border: 2px solid #667eea;
}

.btn-secondary:hover {
  background: #667eea;
  color: white;
  transform: translateY(-2px);
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.6s ease forwards;
}

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

  .main-content {
    padding: 20px;
  }

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

  .image-comparison {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .comparison-divider {
    flex-direction: row;
    justify-content: center;
  }

  .divider-line {
    width: 40px;
    height: 2px;
  }

  .action-buttons {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    max-width: 250px;
    justify-content: center;
  }

  .heatmap-legend {
    flex-direction: column;
    align-items: flex-start;
  }

  .legend-bar {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .header-title {
    font-size: 1.5rem;
  }

  .upload-card {
    padding: 20px;
  }

  .results-summary {
    grid-template-columns: 1fr;
  }

  .comparison-image {
    max-width: 250px;
  }
}

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

  .action-buttons {
    display: none;
  }

  .main-content {
    box-shadow: none;
    border: 1px solid #e0e6ed;
  }
}