/* Differential Calculator Main Styles */

:root {
  /* Colors */
  --primary-color: #0066cc;
  --secondary-color: #6c757d;
  --success-color: #28a745;
  --info-color: #17a2b8;
  --warning-color: #ffc107;
  --danger-color: #dc3545;
  
  /* Text colors */
  --text-primary: #212529;
  --text-secondary: #6c757d;
  --text-light: #999;
  
  /* Background colors */
  --bg-primary: #fff;
  --bg-secondary: #f8f9fa;
  
  /* Border */
  --border-color: #dee2e6;
  --border-radius: 0.25rem;
  --border-radius-lg: 0.5rem;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  
  /* Font sizes */
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  
  /* Shadows */
  --shadow-sm: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
  --shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
  
  /* Transitions */
  --transition-speed: 0.15s;
}

/* Reset & Base Styles */
#diffcalc-app {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: var(--font-size-base);
  line-height: 1.5;
  color: var(--text-primary);
  background-color: var(--bg-secondary);
  padding: var(--spacing-xl);
  min-height: 100vh;
}

#diffcalc-app * {
  box-sizing: border-box;
}

/* Navigation */
.nav-tabs {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xl);
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 0;
}

.nav-link {
  padding: var(--spacing-sm) var(--spacing-lg);
  text-decoration: none;
  color: var(--text-secondary);
  font-weight: 500;
  border: 2px solid transparent;
  border-bottom: 0;
  border-radius: var(--border-radius) var(--border-radius) 0 0;
  transition: all var(--transition-speed) ease;
  background-color: transparent;
  margin-bottom: -2px;
}

.nav-link:hover {
  color: var(--primary-color);
  background-color: var(--bg-secondary);
}

.nav-link.active {
  color: var(--primary-color);
  background-color: var(--bg-primary);
  border-color: var(--border-color);
  border-bottom-color: var(--bg-primary);
}

/* App Content */
.app-content {
  background-color: var(--bg-primary);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-sm);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: 0.375rem 0.75rem;
  font-size: var(--font-size-base);
  font-weight: 400;
  line-height: 1.5;
  text-align: center;
  text-decoration: none;
  vertical-align: middle;
  cursor: pointer;
  user-select: none;
  border: 1px solid transparent;
  border-radius: var(--border-radius);
  transition: all var(--transition-speed) ease;
  background-color: transparent;
  color: var(--text-primary);
}

.btn:hover {
  text-decoration: none;
}

.btn:focus {
  outline: 0;
  box-shadow: 0 0 0 0.2rem rgba(0, 102, 204, 0.25);
}

.btn:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}

.btn-primary {
  color: #fff;
  background-color: var(--primary-color);
  border-color: var(--primary-color);
}

.btn-primary:hover {
  background-color: #0056b3;
  border-color: #004085;
}

.btn-secondary {
  color: #fff;
  background-color: var(--secondary-color);
  border-color: var(--secondary-color);
}

.btn-secondary:hover {
  background-color: #5a6268;
  border-color: #545b62;
}

.btn-sm {
  padding: 0.25rem 0.5rem;
  font-size: var(--font-size-sm);
}

.btn-lg {
  padding: 0.5rem 1rem;
  font-size: var(--font-size-lg);
}

/* Forms */
.form-group {
  margin-bottom: var(--spacing-md);
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 500;
  color: var(--text-primary);
}

.form-control {
  display: block;
  width: 100%;
  padding: 0.375rem 0.75rem;
  font-size: var(--font-size-base);
  font-weight: 400;
  line-height: 1.5;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  background-clip: padding-box;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  transition: border-color var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
}

.form-control:focus {
  color: var(--text-primary);
  background-color: var(--bg-primary);
  border-color: var(--primary-color);
  outline: 0;
  box-shadow: 0 0 0 0.2rem rgba(0, 102, 204, 0.25);
}

.form-control:disabled {
  background-color: var(--bg-secondary);
  opacity: 1;
}

/* Alerts */
.alert {
  position: relative;
  padding: 0.75rem 1.25rem;
  margin-bottom: 1rem;
  border: 1px solid transparent;
  border-radius: var(--border-radius);
}

.alert-danger {
  color: #721c24;
  background-color: #f8d7da;
  border-color: #f5c6cb;
}

.alert-warning {
  color: #856404;
  background-color: #fff3cd;
  border-color: #ffeaa7;
}

.alert-info {
  color: #0c5460;
  background-color: #d1ecf1;
  border-color: #bee5eb;
}

.alert-dismissible {
  padding-right: 3rem;
}

.close {
  position: absolute;
  top: 0;
  right: 0;
  padding: 0.75rem 1.25rem;
  color: inherit;
  background-color: transparent;
  border: 0;
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1;
  opacity: 0.5;
  cursor: pointer;
}

.close:hover {
  opacity: 0.75;
}

/* Modal */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1050;
  padding: var(--spacing-md);
}

.modal {
  background-color: var(--bg-primary);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow);
  max-width: 500px;
  width: 100%;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
  margin: 0;
  font-size: var(--font-size-xl);
  font-weight: 500;
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0;
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-close:hover {
  color: var(--text-primary);
}

.modal-body {
  padding: var(--spacing-lg);
  overflow-y: auto;
  flex: 1;
}

.modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--spacing-sm);
  padding: var(--spacing-lg);
  border-top: 1px solid var(--border-color);
}

/* Loading Spinner */
.spinner {
  display: inline-block;
  width: 1rem;
  height: 1rem;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: spin 0.75s linear infinite;
}

.spinner-sm {
  width: 0.75rem;
  height: 0.75rem;
}

.spinner-lg {
  width: 2rem;
  height: 2rem;
  border-width: 3px;
}

.loading-fullscreen {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(255, 255, 255, 0.9);
  z-index: 9999;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }

/* Responsive */
@media (max-width: 768px) {
  #diffcalc-app {
    padding: var(--spacing-md);
  }
  
  .app-content {
    padding: var(--spacing-lg);
  }
  
  .nav-tabs {
    flex-wrap: wrap;
  }
  
  .nav-link {
    flex: 1;
    text-align: center;
  }
}
/* Fix för ResultsRegistration modal */
.results-registration-modal {
  position: fixed !important;
  top: 50% !important;
  left: 50% !important;
  transform: translate(-50%, -50%) !important;
  z-index: 2000 !important;
  background-color: white !important;
  max-width: 800px !important;
  width: 90% !important;
  max-height: 90vh !important;
  overflow-y: auto !important;
  box-shadow: 0 5px 15px rgba(0,0,0,0.3) !important;
  border-radius: 8px !important;
}

.modal-overlay {
  position: fixed !important;
  top: 0 !important;
  left: 0 !important;
  right: 0 !important;
  bottom: 0 !important;
  background-color: rgba(0, 0, 0, 0.5) !important;
  z-index: 1999 !important;
}

/* Säkerställ att modal-body är scrollbar */
.results-registration-modal .modal-body {
  max-height: calc(90vh - 120px) !important;
  overflow-y: auto !important;
}