:root {
  --primary-color: #2b5876;
  --secondary-color: #4ecca3;
  --accent-color: #4e95f7;
  --dark-text: #2d3748;
  --light-text: #f8f9fa;
  --border-radius: 8px;
  --box-shadow: 0 4px 6px rgba(0,0,0,0.1);
  --transition: all 0.3s ease;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.6;
  color: var(--dark-text);
  background-color: #f5f7fa;
  margin: 0;
  padding: 0;
}

/* Layout */
.container {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 2rem;
  max-width: 1400px;
  margin: 2rem auto;
  padding: 0 2rem;
}

.header {
  background: linear-gradient(135deg, #2b5876 0%, #4e95f7 100%);
  color: white;
  padding: 2rem;
  margin-bottom: 2rem;
}

.header-content {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.header-title {
  font-size: 2rem;
  margin: 0;
  font-weight: 700;
}

.header-subtitle {
  margin: 0.5rem 0 0;
  opacity: 0.9;
}

/* Cards */
.card {
  background: white;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  padding: 1.5rem;
  margin-bottom: 2rem;
}

.section-title {
  font-size: 1.3rem;
  margin-top: 0;
  margin-bottom: 1.5rem;
  color: var(--primary-color);
  border-bottom: 2px solid var(--secondary-color);
  padding-bottom: 0.5rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius);
  border: none;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

.btn-primary {
  background: var(--primary-color);
  color: white;
}

.btn-primary:hover {
  background: #1a3a4f;
  transform: translateY(-2px);
}

.btn-success {
  background: var(--secondary-color);
  color: white;
}

.btn-success:hover {
  background: #3aa789;
  transform: translateY(-2px);
}

.btn-secondary {
  background: #e2e8f0;
  color: var(--dark-text);
}

.btn-secondary:hover {
  background: #cbd5e0;
}

.btn-icon {
  font-size: 1.2rem;
}

/* Image Preview */
.image-preview-container {
  margin: 1.5rem 0;
}

.image-preview {
  border: 1px solid #e2e8f0;
  border-radius: var(--border-radius);
  padding: 0.5rem;
  background: #f8fafc;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 300px;
  overflow: hidden;
}

.image-preview img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

/* Results */
.results-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.result-section {
  margin-bottom: 1.5rem;
}

.subsection-title {
  font-size: 1.1rem;
  margin-top: 0;
  color: var(--primary-color);
}

.result-box {
  background: #f8fafc;
  border-radius: var(--border-radius);
  padding: 1rem;
  min-height: 150px;
}

/* Footer */
.footer {
  text-align: center;
  padding: 1.5rem;
  background: var(--primary-color);
  color: white;
  margin-top: 2rem;
}

/* Responsive */
@media (max-width: 768px) {
  .container {
    grid-template-columns: 1fr;
    padding: 0 1rem;
  }
  
  .results-grid {
    grid-template-columns: 1fr;
  }
}