/* Comparative upload interface - Modern Design - CLEAN VERSION */
.comparative-upload-interface {
  margin-top: 3rem;
  padding: 2rem;
  background: linear-gradient(135deg, rgba(14, 165, 233, 0.05) 0%, rgba(16, 185, 129, 0.05) 100%);
  border-radius: 20px;
  border: 1px solid rgba(14, 165, 233, 0.1);
}

/* Progress Bar */
.upload-progress-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 3rem;
  padding: 0 2rem;
}

.progress-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
}

.step-circle {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--color-border);
  border: 3px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  color: var(--color-text-secondary);
  transition: all var(--transition-normal);
  margin-bottom: 0.5rem;
}

.progress-step.completed .step-circle {
  background: var(--color-success);
  border-color: var(--color-success);
  color: white;
}

.progress-step.active .step-circle {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
  transform: scale(1.1);
}

.step-label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  text-align: center;
}

.progress-step.completed .step-label,
.progress-step.active .step-label {
  color: var(--color-text);
  font-weight: 600;
}

.progress-connector {
  width: 80px;
  height: 2px;
  background: var(--color-border);
  margin: 0 1rem;
  margin-bottom: 1.75rem;
}

.progress-step.completed + .progress-connector {
  background: var(--color-success);
}

/* Modern Cards Grid */
.periods-modern-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.period-modern-card {
  position: relative;
  background: var(--color-surface);
  border-radius: 16px;
  overflow: hidden;
  transition: all var(--transition-normal);
  border: 1px solid var(--color-border);
  min-height: 280px;
}

.period-modern-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.card-background {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 6px;
  background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-success) 100%);
}

.period-modern-card.completed .card-background {
  background: var(--color-success);
}

.card-content {
  padding: 2rem;
  height: 100%;
  display: flex;
  flex-direction: column;
}

/* Upload Zone */
.upload-zone {
  text-align: center;
  padding: 2rem 1rem;
  border: 2px dashed var(--color-border);
  border-radius: 12px;
  background: rgba(14, 165, 233, 0.02);
  transition: all var(--transition-normal);
  cursor: pointer;
  position: relative;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.upload-zone:hover {
  border-color: var(--color-primary);
  background: rgba(14, 165, 233, 0.05);
  transform: scale(1.02);
}

.upload-zone.drag-over {
  border-color: var(--color-success);
  background: rgba(16, 185, 129, 0.1);
  transform: scale(1.05);
}

.upload-icon {
  font-size: 3rem;
  color: var(--color-primary);
  margin-bottom: 1rem;
}

.upload-zone h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0 0 0.5rem 0;
  color: var(--color-text);
}

.upload-text {
  color: var(--color-text-secondary);
  margin-bottom: 1rem;
  line-height: 1.4;
}

.upload-link {
  color: var(--color-primary);
  font-weight: 500;
  text-decoration: underline;
}

.supported-formats {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  background: rgba(14, 165, 233, 0.1);
  padding: 0.5rem 1rem;
  border-radius: 20px;
}

.optional-badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: var(--color-warning);
  color: white;
  padding: 0.25rem 0.75rem;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
}

/* File Loaded State */
.file-loaded {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.period-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.period-badge.success {
  background: rgba(16, 185, 129, 0.1);
  color: var(--color-success);
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.file-details {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.5rem;
  background: rgba(14, 165, 233, 0.05);
  border-radius: 12px;
  border: 1px solid rgba(14, 165, 233, 0.1);
}

.file-icon {
  width: 50px;
  height: 50px;
  background: var(--color-success);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.5rem;
}

.file-info {
  flex: 1;
}

.file-name {
  display: block;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.25rem;
  font-size: 1rem;
}

.file-stats {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

/* Modern Actions */
.comparative-actions-modern {
  text-align: center;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border);
}

.btn-generate {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-success) 100%);
  color: white;
  border: none;
  border-radius: 16px;
  padding: 1.5rem 2rem;
  display: inline-flex;
  align-items: center;
  gap: 1rem;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
  box-shadow: 0 8px 24px rgba(14, 165, 233, 0.3);
  min-width: 280px;
}

.btn-generate:hover:not(.disabled) {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(14, 165, 233, 0.4);
}

.btn-generate.disabled {
  background: var(--color-border);
  color: var(--color-text-secondary);
  cursor: not-allowed;
  box-shadow: none;
}

.btn-icon {
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.btn-content {
  text-align: left;
}

.btn-title {
  display: block;
  font-size: 1.1rem;
  font-weight: 600;
}

.btn-subtitle {
  display: block;
  font-size: 0.85rem;
  opacity: 0.8;
  margin-top: 0.25rem;
}

.help-text-modern {
  margin-top: 1.5rem;
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

/* File Info Notification - Original Style */
.file-info-notification {
  background: linear-gradient(135deg, rgba(14, 165, 233, 0.1) 0%, rgba(16, 185, 129, 0.1) 100%) !important;
  border: 1px solid rgba(14, 165, 233, 0.2) !important;
  border-radius: var(--radius-lg) !important;
  padding: 1rem 1.5rem !important;
  margin-bottom: 1.5rem !important;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  position: relative;
  transition: all var(--duration-normal) var(--ease-standard);
  backdrop-filter: blur(10px);
}

.file-info-content {
  display: flex;
  align-items: center;
  gap: 1rem !important;
  flex: 1;
}

.file-info-content i {
  font-size: 1.5rem !important;
  color: var(--color-success);
  opacity: 0.9;
}

.file-info-notification .file-details {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  background: none !important;
  border: none !important;
  padding: 0 !important;
  align-items: flex-start;
}

.file-info-notification .file-details .file-name {
  font-weight: 600;
  font-size: 0.95rem !important;
  line-height: 1.3 !important;
  margin-bottom: 0 !important;
  color: var(--color-text);
}

.file-info-notification .file-details .file-stats {
  font-size: 0.8rem !important;
  color: var(--color-text-secondary);
  line-height: 1.2 !important;
  opacity: 0.8;
  text-align: left;
  width: 100%;
}

.notification-close {
  background: rgba(255, 255, 255, 0.1) !important;
  border: 1px solid rgba(255, 255, 255, 0.2) !important;
  color: var(--color-text-secondary) !important;
  cursor: pointer;
  padding: 0.5rem !important;
  border-radius: var(--radius-base) !important;
  transition: all var(--duration-normal) var(--ease-standard);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem !important;
  height: 2rem !important;
  font-size: 0.8rem !important;
  opacity: 0.8;
}

.notification-close:hover {
  background: rgba(255, 255, 255, 0.2) !important;
  color: var(--color-text) !important;
  opacity: 1;
  transform: scale(1.05);
}

/* Responsive */
@media (max-width: 768px) {
  .comparative-upload-interface {
    margin-top: 1.5rem;
    padding: 1rem;
  }
  
  .upload-progress-bar {
    padding: 0;
    margin-bottom: 2rem;
  }
  
  .periods-modern-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  .period-modern-card {
    min-height: 250px;
  }
  
  .card-content {
    padding: 1.5rem;
  }
  
  .btn-generate {
    min-width: auto;
    padding: 1rem 1.5rem;
  }
}

/* Upload Actions Buttons */
.upload-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

.upload-actions .btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: all var(--transition-fast);
}

.upload-actions .btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--box-shadow-hover);
}

.upload-actions .btn i {
  font-size: 1rem;
}

/* Success notification animations */
@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(100%);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideOutRight {
  from {
    opacity: 1;
    transform: translateX(0);
  }
  to {
    opacity: 0;
    transform: translateX(100%);
  }
}

/* Success notification style override */
.success-notification {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
}

/* KPI Grid Detailed */
.kpi-grid--detailed {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.kpi-card--info {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(29, 78, 216, 0.1) 100%);
  border-left: 4px solid var(--dashboard-blue);
}

.kpi-card--info .kpi-icon {
  background: rgba(59, 130, 246, 0.1);
  color: var(--dashboard-blue);
}

/* Mobile responsiveness for upload actions */
@media (max-width: 768px) {
  .upload-actions {
    flex-direction: column;
    align-items: center;
  }
  
  .upload-actions .btn {
    width: 100%;
    max-width: 280px;
    justify-content: center;
  }
  
  .kpi-grid--detailed {
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
  }
}