/* Color Palette: #05386B, #379683, #5CDB95, #8EE4AF, #EDF5E1 */

:root {
  --primary-dark: #05386B;
  --primary-medium: #379683;
  --primary-light: #5CDB95;
  --accent-light: #8EE4AF;
  --background-light: #EDF5E1;
  --text-dark: #2c3e50;
  --text-light: #ffffff;
  --shadow: rgba(0, 0, 0, 0.1);
  --gradient-primary: linear-gradient(135deg, #05386B 0%, #379683 50%, #5CDB95 100%);
  --gradient-success: linear-gradient(135deg, #379683 0%, #5CDB95 50%, #8EE4AF 100%);
  --gradient-accent: linear-gradient(135deg, #5CDB95 0%, #8EE4AF 50%, #EDF5E1 100%);
}

/* Dark mode variables */
[data-theme="dark"] {
  --background-light: #1a1a1a;
  --text-dark: #ffffff;
  --shadow: rgba(255, 255, 255, 0.1);
}

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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: var(--gradient-accent);
  color: var(--text-dark);
  line-height: 1.6;
  min-height: 100vh;
  transition: all 0.3s ease;
}

[data-theme="dark"] body {
  background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 50%, #404040 100%);
}

/* Navigation */
.navbar {
  background: var(--gradient-primary) !important;
  box-shadow: 0 2px 10px var(--shadow);
  backdrop-filter: blur(10px);
}

.navbar-brand {
  font-size: 1.5rem;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

/* Cards */
.card {
  border: none;
  border-radius: 15px;
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
}

[data-theme="dark"] .card {
  background: rgba(30, 30, 30, 0.95);
  color: var(--text-dark);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px var(--shadow);
}

.card-header {
  background: var(--gradient-primary) !important;
  border: none;
  font-weight: 600;
}

.card-header.bg-success {
  background: var(--gradient-success) !important;
}

.card-header.bg-info {
  background: var(--gradient-primary) !important;
}

/* Form elements */
.form-control {
  border-radius: 10px;
  border: 2px solid var(--accent-light);
  transition: all 0.3s ease;
  background: rgba(255, 255, 255, 0.9);
}

[data-theme="dark"] .form-control {
  background: rgba(50, 50, 50, 0.9);
  border-color: var(--primary-medium);
  color: var(--text-dark);
}

.form-control:focus {
  border-color: var(--primary-medium);
  box-shadow: 0 0 0 0.2rem rgba(55, 150, 131, 0.25);
  transform: scale(1.02);
}

.form-label {
  font-weight: 600;
  color: var(--primary-dark);
  margin-bottom: 0.5rem;
}

[data-theme="dark"] .form-label {
  color: var(--accent-light);
}

/* Buttons */
.btn {
  border-radius: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s;
}

.btn:hover::before {
  left: 100%;
}

.btn-primary {
  background: var(--gradient-primary);
  border: none;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(5, 56, 107, 0.4);
}

.btn-success {
  background: var(--gradient-success);
  border: none;
}

.btn-success:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(55, 150, 131, 0.4);
}

.btn-outline-primary {
  border: 2px solid var(--primary-medium);
  color: var(--primary-medium);
}

.btn-outline-primary:hover {
  background: var(--gradient-primary);
  border-color: var(--primary-medium);
  transform: translateY(-2px);
}

/* Results section */
#results {
  padding: 2rem;
  border-radius: 15px;
  background: var(--gradient-accent);
  margin: 1rem 0;
}

[data-theme="dark"] #results {
  background: linear-gradient(135deg, #2d2d2d 0%, #404040 50%, #555555 100%);
}

.result-item {
  margin: 1rem 0;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.8);
  border-radius: 10px;
  border-left: 4px solid var(--primary-medium);
  transition: all 0.3s ease;
}

[data-theme="dark"] .result-item {
  background: rgba(50, 50, 50, 0.8);
}

.result-item:hover {
  transform: translateX(10px);
  box-shadow: 0 5px 15px var(--shadow);
}

.result-value {
  font-size: 2rem;
  font-weight: bold;
  color: var(--primary-dark);
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] .result-value {
  color: var(--accent-light);
}

.result-label {
  font-size: 0.9rem;
  color: var(--primary-medium);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Chart container */
.chart-container {
  position: relative;
  width: 100%;
  max-width: 100%;
  height: 400px;
  
  background: rgba(255, 255, 255, 0.9);
  border-radius: 15px;
  padding: 1rem;
  overflow: hidden;
}

[data-theme="dark"] .chart-container {
  background: rgba(30, 30, 30, 0.9);
}

#investmentChart, #comparisonChart {
  max-width: 100%;
  height: auto;
  border-radius: 10px;
}

/* Offcanvas */
.offcanvas {
  background: var(--gradient-accent);
}

[data-theme="dark"] .offcanvas {
  background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
}

.offcanvas-header {
  background: var(--gradient-primary) !important;
}

/* Saved simulations */
.simulation-item {
  background: rgba(255, 255, 255, 0.9);
  border-radius: 10px;
  padding: 1rem;
  margin: 0.5rem 0;
  border-left: 4px solid var(--primary-medium);
  cursor: pointer;
  transition: all 0.3s ease;
}

[data-theme="dark"] .simulation-item {
  background: rgba(50, 50, 50, 0.9);
}

.simulation-item:hover {
  transform: translateX(5px);
  box-shadow: 0 3px 10px var(--shadow);
}

.simulation-name {
  font-weight: bold;
  color: var(--primary-dark);
}

[data-theme="dark"] .simulation-name {
  color: var(--accent-light);
}

.simulation-details {
  font-size: 0.8rem;
  color: var(--primary-medium);
}

/* Modals */
.modal-content {
  border-radius: 15px;
  border: none;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
}

[data-theme="dark"] .modal-content {
  background: rgba(30, 30, 30, 0.95);
  color: var(--text-dark);
}

.modal-header {
  border: none;
  border-radius: 15px 15px 0 0;
}

.modal-body {
  padding: 2rem;
}

/* Ads */
.ad-banner {
  border-radius: 10px;
  min-height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-accent) !important;
  border: 2px dashed var(--primary-medium);
}

[data-theme="dark"] .ad-banner {
  background: linear-gradient(135deg, #2d2d2d 0%, #404040 100%) !important;
}

/* Toast */
.toast {
  border-radius: 10px;
  border: none;
  box-shadow: 0 5px 15px var(--shadow);
}

/* Footer */
footer {
  background: var(--gradient-primary) !important;
  margin-top: auto;
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
  100% {
    transform: scale(1);
  }
}

.animate-fade-in {
  animation: fadeInUp 0.6s ease-out;
}

.animate-pulse {
  animation: pulse 2s infinite;
}

/* Responsive design */
@media (max-width: 768px) {
  .container-fluid {
    padding: 0 15px;
  }
  
  .card {
    margin-bottom: 1rem;
  }
  
  .result-value {
    font-size: 1.5rem;
  }
  
  .chart-container {
    height: 300px;
  }
  
  .btn {
    font-size: 0.9rem;
    padding: 0.5rem 1rem;
  }
  
  .navbar-brand {
    font-size: 1.2rem;
  }
}

@media (max-width: 576px) {
  .result-value {
    font-size: 1.2rem;
  }
  
  .chart-container {
    height: 250px;
    padding: 0.5rem;
  }
  
  .card-body {
    padding: 1rem;
  }
  
  .modal-body {
    padding: 1rem;
  }
}

/* Accessibility */
.btn:focus,
.form-control:focus {
  outline: 3px solid var(--primary-light);
  outline-offset: 2px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Loading states */
.loading {
  position: relative;
  overflow: hidden;
}

.loading::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  animation: loading 1.5s infinite;
}

@keyframes loading {
  0% {
    left: -100%;
  }
  100% {
    left: 100%;
  }
}

/* Print styles */
@media print {
  .navbar,
  .offcanvas,
  .modal,
  .toast-container,
  .ad-banner {
    display: none !important;
  }
  
  body {
    background: white !important;
    color: black !important;
  }
  
  .card {
    break-inside: avoid;
    box-shadow: none !important;
    border: 1px solid #ccc !important;
  }
}

/* High contrast mode */
@media (prefers-contrast: high) {
  :root {
    --primary-dark: #000000;
    --primary-medium: #333333;
    --text-dark: #000000;
    --background-light: #ffffff;
  }
  
  .card {
    border: 2px solid #000000 !important;
  }
  
  .btn {
    border: 2px solid #000000 !important;
  }
}

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