/* Swiss Style Design System */
:root {
  /* Color Palette */
  --primary-color: #2196F3;
  --success-color: #4CAF50;
  --warning-color: #FFC107;
  --danger-color: #F44336;
  --secondary-color: #9C27B0;
  
  /* Typography */
  --font-primary: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --font-size-base: 16px;
  --line-height-base: 1.5;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 3rem;
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.2);
  
  /* Border Radius */
  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --border-radius-lg: 12px;
  
  /* Transitions */
  --transition-base: all 0.3s ease;
  --transition-fast: all 0.15s ease;
}

/* Dark Mode Variables */
[data-theme="dark"] {
  --bs-body-bg: #1a1a1a;
  --bs-body-color: #ffffff;
  --bs-card-bg: #2d2d2d;
  --bs-border-color: #404040;
}

/* Base Styles */
* {
  box-sizing: border-box;
}

body {
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  transition: var(--transition-base);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

.display-4 {
  font-weight: 700;
  letter-spacing: -0.02em;
}

.lead {
  font-size: 1.125rem;
  font-weight: 400;
}

/* Swiss Style Grid System */
.container {
  max-width: 1200px;
}

/* Card Enhancements */
.card {
  border: none;
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-base);
  overflow: hidden;
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card-header {
  border-bottom: none;
  padding: var(--spacing-lg);
  font-weight: 600;
}

.card-body {
  padding: var(--spacing-lg);
}

/* Form Enhancements */
.form-control {
  border-radius: var(--border-radius-sm);
  border: 2px solid #e9ecef;
  padding: var(--spacing-sm) var(--spacing-md);
  transition: var(--transition-fast);
  font-size: var(--font-size-base);
}

.form-control:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 0.2rem rgba(33, 150, 243, 0.25);
}

.form-label {
  font-weight: 500;
  margin-bottom: var(--spacing-sm);
  color: #495057;
}

.input-group-text {
  background-color: #f8f9fa;
  border: 2px solid #e9ecef;
  border-left: none;
  font-size: 0.875rem;
  font-weight: 500;
}

/* Button Enhancements */
.btn {
  border-radius: var(--border-radius-sm);
  font-weight: 500;
  padding: var(--spacing-sm) var(--spacing-lg);
  transition: var(--transition-fast);
  border: none;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-size: 0.875rem;
}

.btn-lg {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-base);
}

.btn-primary {
  background-color: var(--primary-color);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background-color: #1976D2;
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

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

.btn-warning {
  background-color: var(--warning-color);
  color: #000;
}

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

/* Navigation */
.navbar {
  backdrop-filter: blur(10px);
  background: linear-gradient(180deg, rgba(33, 150, 243, 0.12) 0%, rgba(255, 255, 255, 0.98) 100%) !important;
  border-bottom: 1px solid rgba(33, 150, 243, 0.25);
}

/* Enhanced header visuals */
.navbar .navbar-brand {
  letter-spacing: 0.2px;
}

.navbar .navbar-brand img {
  height: 28px;
  width: auto;
  display: block;
}

.navbar .nav-link {
  color: #495057;
  position: relative;
  transition: var(--transition-fast);
}

.navbar .nav-link:hover,
.navbar .nav-link:focus {
  color: var(--primary-color);
}

.navbar .nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -6px;
  height: 2px;
  width: 0;
  background: var(--primary-color);
  transition: width 0.2s ease;
}

.navbar .nav-link:hover::after,
.navbar .nav-link.active::after {
  width: 100%;
}

.navbar .btn {
  border-width: 1px;
}

.navbar .navbar-toggler {
  border-color: rgba(0, 0, 0, 0.15);
}

/* Custom hamburger icon and interactions */
.navbar .navbar-toggler {
  padding: 0.35rem 0.5rem;
  border-radius: var(--border-radius-sm);
  transition: var(--transition-fast);
}

.navbar .navbar-toggler:hover {
  background-color: rgba(33, 150, 243, 0.08);
  border-color: rgba(33, 150, 243, 0.3);
}

.navbar .navbar-toggler:focus {
  box-shadow: 0 0 0 0.2rem rgba(33, 150, 243, 0.25);
}

.navbar .navbar-toggler-icon {
  width: 1.4rem;
  height: 1.4rem;
  background-size: 100% 100%;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%232196F3' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

[data-theme="dark"] .navbar .navbar-toggler {
  border-color: rgba(255, 255, 255, 0.2);
}

[data-theme="dark"] .navbar .navbar-toggler:hover {
  background-color: rgba(100, 181, 246, 0.12);
  border-color: rgba(100, 181, 246, 0.4);
}

[data-theme="dark"] .navbar .navbar-toggler:focus {
  box-shadow: 0 0 0 0.2rem rgba(100, 181, 246, 0.28);
}

[data-theme="dark"] .navbar .navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%23f9fafb' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

[data-theme="dark"] .navbar {
  background: linear-gradient(180deg, rgba(100, 181, 246, 0.08) 0%, rgba(45, 45, 45, 0.98) 100%) !important;
  border-bottom-color: rgba(100, 181, 246, 0.3);
}

[data-theme="dark"] .navbar .nav-link {
  color: #e9ecef;
}

[data-theme="dark"] .navbar .nav-link:hover,
[data-theme="dark"] .navbar .nav-link:focus {
  color: var(--primary-color);
}

[data-theme="dark"] .navbar .navbar-toggler {
  border-color: rgba(255, 255, 255, 0.2);
}

.navbar-brand {
  font-weight: 700;
  font-size: 1.25rem;
}

/* Alert Enhancements */
.alert {
  border: none;
  border-radius: var(--border-radius-md);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.alert-success {
  background-color: rgba(76, 175, 80, 0.1);
  color: #2E7D32;
  border-left: 4px solid var(--success-color);
}

.alert-warning {
  background-color: rgba(255, 193, 7, 0.1);
  color: #F57F17;
  border-left: 4px solid var(--warning-color);
}

.alert-danger {
  background-color: rgba(244, 67, 54, 0.1);
  color: #C62828;
  border-left: 4px solid var(--danger-color);
}

.alert-info {
  background-color: rgba(33, 150, 243, 0.1);
  color: #1565C0;
  border-left: 4px solid var(--primary-color);
}

/* Results Display */
.result-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid #e9ecef;
}

.result-item:last-child {
  border-bottom: none;
}

.result-label {
  font-weight: 500;
  color: #495057;
}

.result-value {
  font-weight: 700;
  font-size: 1.125rem;
}

.result-value.primary {
  color: var(--primary-color);
}

.result-value.success {
  color: var(--success-color);
}

.result-value.warning {
  color: var(--warning-color);
}

.result-value.danger {
  color: var(--danger-color);
}

/* Badge Enhancements */
.badge {
  font-weight: 500;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius-sm);
}

/* Accordion Enhancements */
.accordion-item {
  border: none;
  margin-bottom: var(--spacing-sm);
  border-radius: var(--border-radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.accordion-button {
  font-weight: 500;
  padding: var(--spacing-lg);
  background-color: #f8f9fa;
  border: none;
}

.accordion-button:not(.collapsed) {
  background-color: var(--primary-color);
  color: white;
  box-shadow: none;
}

.accordion-body {
  padding: var(--spacing-lg);
}

/* Table Enhancements */
.table {
  border-radius: var(--border-radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.table thead th {
  background-color: var(--primary-color);
  color: white;
  font-weight: 600;
  border: none;
  padding: var(--spacing-md);
}

.table tbody td {
  padding: var(--spacing-md);
  border-color: #e9ecef;
}

.table-responsive {
  border-radius: var(--border-radius-md);
  overflow: hidden;
}

/* Modal Enhancements */
.modal-content {
  border: none;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
}

.modal-header {
  border-bottom: none;
  padding: var(--spacing-xl) var(--spacing-xl) var(--spacing-lg);
}

.modal-body {
  padding: var(--spacing-lg) var(--spacing-xl);
}

.modal-footer {
  border-top: none;
  padding: var(--spacing-lg) var(--spacing-xl) var(--spacing-xl);
}

/* Offcanvas Enhancements */
.offcanvas {
  border: none;
  box-shadow: var(--shadow-lg);
}

.offcanvas-header {
  padding: var(--spacing-xl) var(--spacing-lg) var(--spacing-lg);
}

.offcanvas-body {
  padding: var(--spacing-lg);
}

/* Chart Container */
#stockChart {
  max-width: 100%;
  height: auto;
}

/* Ad Banner Styling */
.ad-banner {
  border: 2px dashed #dee2e6;
  border-radius: var(--border-radius-md);
  min-height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #6c757d;
  font-weight: 500;
}

/* Loading States */
.loading {
  opacity: 0.6;
  pointer-events: none;
}

.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border: 2px solid #f3f3f3;
  border-top: 2px solid var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Tooltip Enhancements */
.tooltip {
  font-size: 0.875rem;
}

.tooltip-inner {
  background-color: #333;
  border-radius: var(--border-radius-sm);
  padding: var(--spacing-sm) var(--spacing-md);
}

/* Dark Mode Styles */
[data-theme="dark"] {
  background-color: #1a1a1a;
  color: #ffffff;
}

[data-theme="dark"] .navbar {
  background-color: rgba(45, 45, 45, 0.95) !important;
  border-bottom-color: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .card {
  background-color: #2d2d2d;
  color: #ffffff;
}

/* Improve contrast for dark mode */
[data-theme="dark"] .text-muted {
  color: #b0bec5 !important;
}

[data-theme="dark"] a {
  color: var(--primary-color);
}

[data-theme="dark"] a:hover {
  color: #1976D2;
}

[data-theme="dark"] .result-label {
  color: #e0e0e0;
}

[data-theme="dark"] .result-value {
  color: #ffffff;
}

[data-theme="dark"] .form-control {
  background-color: #3d3d3d;
  border-color: #555;
  color: #ffffff;
}

[data-theme="dark"] .form-control:focus {
  background-color: #3d3d3d;
  border-color: var(--primary-color);
  color: #ffffff;
}

[data-theme="dark"] .input-group-text {
  background-color: #3d3d3d;
  border-color: #555;
  color: #ffffff;
}

[data-theme="dark"] .form-label {
  color: #e9ecef;
}

[data-theme="dark"] .accordion-button {
  background-color: #3d3d3d;
  color: #ffffff;
  border-color: #555;
}

[data-theme="dark"] .table {
  --bs-table-bg: #2d2d2d;
  --bs-table-color: #ffffff;
}

[data-theme="dark"] .modal-content {
  background-color: #2d2d2d;
  color: #ffffff;
}

[data-theme="dark"] .offcanvas {
  background-color: #2d2d2d;
  color: #ffffff;
}

[data-theme="dark"] .ad-banner {
  background-color: #3d3d3d;
  border-color: #555;
  color: #adb5bd;
}

/* Mobile First Responsive Design */
@media (max-width: 576px) {
  .container {
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
  }
  
  .display-4 {
    font-size: 2rem;
  }
  
  .card-body {
    padding: var(--spacing-md);
  }
  
  .btn-lg {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 0.875rem;
  }
  
  .modal-body {
    padding: var(--spacing-md);
  }
  
  .offcanvas-body {
    padding: var(--spacing-md);
  }
  
  .result-item {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-xs);
  }
  
  .table-responsive {
    font-size: 0.875rem;
  }
}

@media (max-width: 768px) {
  .navbar-brand {
    font-size: 1.125rem;
  }
  
  .lead {
    font-size: 1rem;
  }
  
  .card-header {
    padding: var(--spacing-md);
  }
  
  .accordion-button {
    padding: var(--spacing-md);
  }
  
  .modal-header,
  .modal-body,
  .modal-footer {
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
  }
}

/* Print Styles */
@media print {
  .navbar,
  .btn,
  .ad-banner,
  .modal,
  .offcanvas {
    display: none !important;
  }
  
  .card {
    box-shadow: none;
    border: 1px solid #dee2e6;
  }
  
  body {
    font-size: 12pt;
    line-height: 1.4;
  }
  
  h1, h2, h3, h4, h5, h6 {
    page-break-after: avoid;
  }
  
  .card {
    page-break-inside: avoid;
  }
}

/* Accessibility Enhancements */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Focus Indicators */
.btn:focus,
.form-control:focus,
.accordion-button:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
  .card {
    border: 2px solid #000;
  }
  
  .btn {
    border: 2px solid currentColor;
  }
  
  .form-control {
    border: 2px solid #000;
  }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: #f1f1f1;
  border-radius: var(--border-radius-sm);
}

::-webkit-scrollbar-thumb {
  background: var(--primary-color);
  border-radius: var(--border-radius-sm);
}

::-webkit-scrollbar-thumb:hover {
  background: #1976D2;
}

[data-theme="dark"] ::-webkit-scrollbar-track {
  background: #3d3d3d;
}

[data-theme="dark"] ::-webkit-scrollbar-thumb {
  background: var(--primary-color);
}

/* Animation Classes */
.fade-in {
  animation: fadeIn 0.5s ease-in;
}

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

.slide-in {
  animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
  from { transform: translateX(-100%); }
  to { transform: translateX(0); }
}

/* Utility Classes */
.text-primary { color: var(--primary-color) !important; }
.text-success { color: var(--success-color) !important; }
.text-warning { color: var(--warning-color) !important; }
.text-danger { color: var(--danger-color) !important; }
.text-secondary { color: var(--secondary-color) !important; }

.bg-primary { background-color: var(--primary-color) !important; }
.bg-success { background-color: var(--success-color) !important; }
.bg-warning { background-color: var(--warning-color) !important; }
.bg-danger { background-color: var(--danger-color) !important; }
.bg-secondary { background-color: var(--secondary-color) !important; }

.border-primary { border-color: var(--primary-color) !important; }
.border-success { border-color: var(--success-color) !important; }
.border-warning { border-color: var(--warning-color) !important; }
.border-danger { border-color: var(--danger-color) !important; }
.border-secondary { border-color: var(--secondary-color) !important; }

/* Swiss Grid System Extensions */
.grid-container {
  display: grid;
  gap: var(--spacing-lg);
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-item {
  display: flex;
  flex-direction: column;
}

/* Component Specific Styles */
.calculation-summary {
  background: linear-gradient(135deg, var(--primary-color), #1976D2);
  color: white;
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl);
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.calculation-summary h3 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.calculation-summary p {
  font-size: 1.125rem;
  opacity: 0.9;
  margin-bottom: 0;
}

.status-indicator {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius-lg);
  font-weight: 500;
  font-size: 0.875rem;
}

.status-indicator.success {
  background-color: rgba(76, 175, 80, 0.1);
  color: var(--success-color);
}

.status-indicator.warning {
  background-color: rgba(255, 193, 7, 0.1);
  color: var(--warning-color);
}

.status-indicator.danger {
  background-color: rgba(244, 67, 54, 0.1);
  color: var(--danger-color);
}

/* Footer Enhancements */
footer {
  margin-top: auto;
  background: linear-gradient(135deg, #333, #222) !important;
}

footer a {
  color: var(--primary-color) !important;
  text-decoration: none;
  transition: var(--transition-fast);
}

footer a:hover {
  color: #1976D2 !important;
  text-decoration: underline;
}