/* CSS Variables for Color Palette */
:root {
  --primary-color: #05386B;
  --secondary-color: #379683;
  --accent-color: #5CDB95;
  --light-accent: #8EE4AF;
  --background-light: #EDF5E1;
  --text-dark: #2c3e50;
  --text-light: #ffffff;
  --gradient-primary: linear-gradient(135deg, #05386B 0%, #379683 100%);
  --gradient-secondary: linear-gradient(135deg, #379683 0%, #5CDB95 100%);
  --gradient-accent: linear-gradient(135deg, #5CDB95 0%, #8EE4AF 100%);
  --shadow-soft: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-medium: 0 8px 15px rgba(0, 0, 0, 0.1);
  --shadow-strong: 0 15px 35px rgba(0, 0, 0, 0.1);
  --border-radius: 12px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Mode Variables */
[data-theme="dark"] {
  --primary-color: #0a4d7a;
  --secondary-color: #4aa691;
  --accent-color: #6ee5a5;
  --light-accent: #9ee8bf;
  --background-light: #1a1a1a;
  --text-dark: #e0e0e0;
  --text-light: #ffffff;
  --gradient-primary: linear-gradient(135deg, #0a4d7a 0%, #4aa691 100%);
  --gradient-secondary: linear-gradient(135deg, #4aa691 0%, #6ee5a5 100%);
  --gradient-accent: linear-gradient(135deg, #6ee5a5 0%, #9ee8bf 100%);
}

/* Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: var(--background-light);
  color: var(--text-dark);
  line-height: 1.6;
  transition: var(--transition);
}

/* Dark Mode Body */
[data-theme="dark"] body {
  background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
  color: var(--text-dark);
}

/* Navigation */
.navbar {
  background: var(--gradient-primary);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-medium);
  transition: var(--transition);
}

.navbar-brand {
  color: var(--text-light) !important;
  font-size: 1.5rem;
  font-weight: 700;
}

.navbar .btn-outline-light {
  border-color: rgba(255, 255, 255, 0.3);
  color: var(--text-light);
  transition: var(--transition);
}

.navbar .btn-outline-light:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.5);
  transform: translateY(-1px);
}

/* Offcanvas */
.offcanvas {
  background: var(--gradient-secondary);
  color: var(--text-light);
}

.offcanvas-title {
  color: var(--text-light);
  font-weight: 600;
}

.offcanvas .form-label {
  color: var(--text-light);
  font-weight: 500;
}

.offcanvas .form-control,
.offcanvas .form-select {
  background-color: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: var(--text-light);
}

.offcanvas .form-control::placeholder {
  color: rgba(255, 255, 255, 0.7);
}

.offcanvas .form-control:focus,
.offcanvas .form-select:focus {
  background-color: rgba(255, 255, 255, 0.15);
  border-color: var(--accent-color);
  box-shadow: 0 0 0 0.2rem rgba(92, 219, 149, 0.25);
}

/* Cards */
.card {
  border: none;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-soft);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  transition: var(--transition);
}

[data-theme="dark"] .card {
  background: rgba(42, 42, 42, 0.95);
  color: var(--text-dark);
}

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

.card-header {
  background: var(--gradient-accent);
  border-bottom: none;
  border-radius: var(--border-radius) var(--border-radius) 0 0 !important;
  color: var(--primary-color);
  font-weight: 600;
}

[data-theme="dark"] .card-header {
  color: var(--text-dark);
}

/* Buttons */
.btn {
  border-radius: var(--border-radius);
  font-weight: 500;
  transition: var(--transition);
  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;
  color: var(--text-light);
}

.btn-primary:hover {
  background: var(--gradient-secondary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

.btn-success {
  background: var(--gradient-accent);
  border: none;
  color: var(--primary-color);
  font-weight: 600;
}

.btn-success:hover {
  background: var(--gradient-secondary);
  color: var(--text-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

/* Form Controls */
.form-control,
.form-select {
  border-radius: var(--border-radius);
  border: 2px solid rgba(92, 219, 149, 0.3);
  transition: var(--transition);
}

.form-control:focus,
.form-select:focus {
  border-color: var(--accent-color);
  box-shadow: 0 0 0 0.2rem rgba(92, 219, 149, 0.25);
}

[data-theme="dark"] .form-control,
[data-theme="dark"] .form-select {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.3);
  color: var(--text-dark);
}

/* Result Cards */
.result-card {
  background: var(--gradient-accent);
  border: none;
  transition: var(--transition);
}

.result-card:hover {
  transform: translateY(-5px) scale(1.02);
  box-shadow: var(--shadow-strong);
}

.result-card .card-body {
  padding: 2rem 1rem;
}

.result-card h4 {
  font-weight: 700;
  font-size: 1.5rem;
}

/* Debt Cards */
.debt-card {
  border-left: 4px solid var(--accent-color);
  transition: var(--transition);
  cursor: pointer;
}

.debt-card:hover {
  border-left-color: var(--secondary-color);
  transform: translateX(5px);
  box-shadow: var(--shadow-medium);
}

.debt-card .card-title {
  color: var(--primary-color);
  font-weight: 600;
}

[data-theme="dark"] .debt-card .card-title {
  color: var(--accent-color);
}

.debt-category {
  background: var(--gradient-secondary);
  color: var(--text-light);
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 500;
}

/* Alerts */
.alert {
  border: none;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-soft);
}

.alert-warning {
  background: linear-gradient(135deg, #fff3cd 0%, #ffeaa7 100%);
  color: #856404;
}

/* Modals */
.modal-content {
  border: none;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-strong);
}

[data-theme="dark"] .modal-content {
  background-color: #2a2a2a;
  color: var(--text-dark);
}

.modal-header {
  background: var(--gradient-primary);
  color: var(--text-light);
  border-bottom: none;
  border-radius: var(--border-radius) var(--border-radius) 0 0;
}

.modal-header .btn-close {
  filter: invert(1);
}

/* Accordion */
.accordion-item {
  border: none;
  border-radius: var(--border-radius);
  margin-bottom: 0.5rem;
  overflow: hidden;
}

.accordion-button {
  background: var(--gradient-accent);
  color: var(--primary-color);
  font-weight: 600;
  border: none;
}

.accordion-button:not(.collapsed) {
  background: var(--gradient-secondary);
  color: var(--text-light);
}

.accordion-button:focus {
  box-shadow: none;
}

/* Charts */
canvas {
  max-width: 100%;
  height: auto;
  border-radius: var(--border-radius);
}

/* Ad Containers */
.ad-container {
  margin: 2rem 0;
}

.ad-placeholder,
.ad-placeholder-mobile {
  background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
  border: 2px dashed #dee2e6;
  border-radius: var(--border-radius);
  padding: 2rem;
  color: #6c757d;
}

.ad-placeholder {
  height: 250px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ad-placeholder-mobile {
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Footer */
.footer {
  background: var(--gradient-primary);
  color: var(--text-light);
  margin-top: auto;
}

.footer .text-muted {
  color: rgba(255, 255, 255, 0.7) !important;
}

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

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(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-slide-in {
  animation: slideInRight 0.6s ease-out;
}

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

/* Responsive Design */
@media (max-width: 768px) {
  .container {
    padding-left: 1rem;
    padding-right: 1rem;
  }
  
  .display-5 {
    font-size: 2rem;
  }
  
  .card-body {
    padding: 1rem;
  }
  
  .result-card .card-body {
    padding: 1.5rem 0.75rem;
  }
  
  .result-card h4 {
    font-size: 1.25rem;
  }
  
  .btn-lg {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
  }
  
  .modal-dialog {
    margin: 0.5rem;
  }
  
  .offcanvas {
    width: 300px;
  }
}

@media (max-width: 576px) {
  .navbar-brand {
    font-size: 1.25rem;
  }
  
  .display-5 {
    font-size: 1.75rem;
  }
  
  .lead {
    font-size: 1rem;
  }
  
  .card-header h5 {
    font-size: 1rem;
  }
  
  .result-card h4 {
    font-size: 1.1rem;
  }
  
  .result-card .display-6 {
    font-size: 2rem;
  }
}

/* Utility Classes */
.text-gradient {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.bg-gradient-primary {
  background: var(--gradient-primary);
}

.bg-gradient-secondary {
  background: var(--gradient-secondary);
}

.bg-gradient-accent {
  background: var(--gradient-accent);
}

.shadow-soft {
  box-shadow: var(--shadow-soft);
}

.shadow-medium {
  box-shadow: var(--shadow-medium);
}

.shadow-strong {
  box-shadow: var(--shadow-strong);
}

.border-radius {
  border-radius: var(--border-radius);
}

/* 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%;
  }
}

/* Private Mode Styles */
.private-mode .sensitive-data {
  filter: blur(4px);
  transition: filter 0.3s ease;
}

.private-mode .sensitive-data:hover {
  filter: blur(0);
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
  :root {
    --shadow-soft: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-medium: 0 4px 8px rgba(0, 0, 0, 0.3);
    --shadow-strong: 0 8px 16px rgba(0, 0, 0, 0.3);
  }
  
  .card {
    border: 2px solid var(--primary-color);
  }
  
  .btn {
    border: 2px solid currentColor;
  }
}

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

/* Print Styles */
@media print {
  .navbar,
  .offcanvas,
  .modal,
  .ad-container,
  .btn,
  .footer {
    display: none !important;
  }
  
  .card {
    box-shadow: none;
    border: 1px solid #000;
  }
  
  body {
    background: white;
    color: black;
  }
}