/* ===== CSS VARIABLES ===== */
:root {
  /* Color Palette */
  --primary-color: #2196F3;
  --success-color: #4CAF50;
  --warning-color: #FFC107;
  --danger-color: #F44336;
  --purple-color: #9C27B0;
  --orange-color: #FF9800;
  
  /* Light Theme */
  --bg-color: #ffffff;
  --surface-color: #f8f9fa;
  --text-color: #212529;
  --text-muted: #6c757d;
  --border-color: #dee2e6;
  --shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
  --shadow-lg: 0 1rem 3rem rgba(0, 0, 0, 0.175);
  
  /* Transitions */
  --transition: all 0.3s ease;
  --transition-fast: all 0.15s ease;
}

/* Dark Theme Variables */
[data-bs-theme="dark"] {
  --bg-color: #212529;
  --surface-color: #343a40;
  --text-color: #ffffff;
  --text-muted: #adb5bd;
  --border-color: #495057;
  --shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 1rem 3rem rgba(0, 0, 0, 0.4);
}

/* ===== BASE STYLES ===== */
* {
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  transition: var(--transition);
  line-height: 1.6;
}

/* ===== CUSTOM BOOTSTRAP OVERRIDES ===== */
.btn-outline-purple {
  color: var(--purple-color);
  border-color: var(--purple-color);
}

.btn-outline-purple:hover {
  background-color: var(--purple-color);
  border-color: var(--purple-color);
  color: white;
}

.btn-outline-orange {
  color: var(--orange-color);
  border-color: var(--orange-color);
}

.btn-outline-orange:hover {
  background-color: var(--orange-color);
  border-color: var(--orange-color);
  color: white;
}

.text-purple {
  color: var(--purple-color) !important;
}

.text-orange {
  color: var(--orange-color) !important;
}

.bg-purple {
  background-color: var(--purple-color) !important;
}

.bg-orange {
  background-color: var(--orange-color) !important;
}

/* ===== HEADER STYLES ===== */
.navbar {
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.navbar-brand {
  font-size: 1.5rem;
  font-weight: 700;
}

#darkModeToggle {
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

#darkModeToggle:hover {
  transform: scale(1.1);
}

/* ===== OFFCANVAS STYLES ===== */
.offcanvas-body {
  padding: 1.5rem;
}

.nav-header {
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 0.5rem;
  margin-top: 1rem;
}

.nav-header:first-child {
  margin-top: 0;
}

.nav-link.btn {
  text-align: left;
  justify-content: flex-start;
  border-radius: 0.5rem;
  transition: var(--transition);
}

.nav-link.btn:hover {
  transform: translateX(5px);
}

/* ===== HERO SECTION ===== */
.hero-section {
  padding: 3rem 0;
  background: linear-gradient(135deg, var(--primary-color)10, var(--success-color)10);
  border-radius: 1rem;
  margin-bottom: 2rem;
}

.hero-section h1 {
  background: linear-gradient(45deg, var(--primary-color), var(--success-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===== CARD STYLES ===== */
.card {
  border: none;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border-radius: 1rem;
  overflow: hidden;
  background-color: var(--surface-color);
}

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

.card-img-top {
  height: 200px;
  object-fit: cover;
  background: linear-gradient(45deg, var(--primary-color), var(--success-color));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 2rem;
  font-weight: bold;
}

.card-header {
  background-color: var(--surface-color);
  border-bottom: 1px solid var(--border-color);
  font-weight: 600;
}

.card-body {
  padding: 1.5rem;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text-color);
}

.card-subtitle {
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-bottom: 1rem;
}

/* ===== BADGES AND TAGS ===== */
.badge {
  font-size: 0.75rem;
  padding: 0.5em 0.75em;
  border-radius: 0.5rem;
  font-weight: 500;
}

.card-type-badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  z-index: 1;
}

.card-type-credito {
  background-color: var(--primary-color);
}

.card-type-debito {
  background-color: var(--success-color);
}

.card-type-pre-pago {
  background-color: var(--warning-color);
  color: #000;
}

/* ===== RATING STYLES ===== */
.rating {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  margin-bottom: 1rem;
}

.rating-stars {
  color: var(--warning-color);
}

.rating-value {
  font-weight: 600;
  margin-left: 0.5rem;
}

/* ===== FEATURE LIST ===== */
.feature-list {
  list-style: none;
  padding: 0;
  margin-bottom: 1rem;
}

.feature-list li {
  padding: 0.25rem 0;
  display: flex;
  align-items: center;
  font-size: 0.875rem;
}

.feature-list li i {
  color: var(--success-color);
  margin-right: 0.5rem;
  width: 16px;
}

/* ===== CARD ACTIONS ===== */
.card-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.btn-sm {
  padding: 0.375rem 0.75rem;
  font-size: 0.875rem;
  border-radius: 0.5rem;
}

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

.btn-favorite:hover,
.btn-favorite.active {
  background-color: var(--danger-color);
  border-color: var(--danger-color);
  color: white;
}

.btn-compare {
  color: var(--primary-color);
  border-color: var(--primary-color);
}

.btn-compare:hover,
.btn-compare.active {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
  color: white;
}

/* ===== FILTERS SECTION ===== */
.filters-section .card {
  background-color: var(--surface-color);
}

.form-select,
.form-control {
  background-color: var(--bg-color);
  border-color: var(--border-color);
  color: var(--text-color);
  border-radius: 0.5rem;
}

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

/* ===== SECTION TITLES ===== */
.section-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-color);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
}

.section-title i {
  margin-right: 0.5rem;
}

/* ===== VIEW TOGGLE ===== */
.view-toggle {
  display: flex;
  gap: 0.25rem;
}

.view-toggle .btn {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 0.5rem;
}

.view-toggle .btn.active {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
  color: white;
}

/* ===== LIST VIEW STYLES ===== */
.list-view .card {
  margin-bottom: 1rem;
}

.list-view .card-body {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.list-view .card-img-top {
  width: 100px;
  height: 60px;
  flex-shrink: 0;
  border-radius: 0.5rem;
}

.list-view .card-content {
  flex: 1;
}

.list-view .card-actions {
  flex-shrink: 0;
}

/* ===== MODAL STYLES ===== */
.modal-content {
  border: none;
  border-radius: 1rem;
  background-color: var(--surface-color);
}

.modal-header {
  border-bottom: 1px solid var(--border-color);
  background-color: var(--surface-color);
}

.modal-body {
  background-color: var(--bg-color);
}

.modal-footer {
  border-top: 1px solid var(--border-color);
  background-color: var(--surface-color);
}

/* ===== COMPARISON TABLE ===== */
.comparison-table {
  width: 100%;
  margin-bottom: 0;
}

.comparison-table th,
.comparison-table td {
  padding: 1rem;
  text-align: center;
  border: 1px solid var(--border-color);
  vertical-align: middle;
}

.comparison-table th {
  background-color: var(--surface-color);
  font-weight: 600;
  position: sticky;
  top: 0;
  z-index: 1;
}

.comparison-table .card-img {
  width: 80px;
  height: 50px;
  object-fit: cover;
  border-radius: 0.5rem;
  margin: 0 auto;
}

.comparison-feature {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.comparison-feature i {
  color: var(--success-color);
}

.comparison-feature.negative i {
  color: var(--danger-color);
}

/* ===== GLOSSARY STYLES ===== */
.glossary-item {
  margin-bottom: 1.5rem;
  padding: 1rem;
  background-color: var(--surface-color);
  border-radius: 0.5rem;
  border-left: 4px solid var(--primary-color);
}

.glossary-term {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

.glossary-definition {
  color: var(--text-color);
  margin-bottom: 0;
}

/* ===== TIPS STYLES ===== */
.tip-item {
  margin-bottom: 1.5rem;
  padding: 1.5rem;
  background-color: var(--surface-color);
  border-radius: 0.75rem;
  border: 1px solid var(--border-color);
}

.tip-icon {
  width: 40px;
  height: 40px;
  background-color: var(--primary-color);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  font-size: 1.25rem;
}

.tip-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-color);
  margin-bottom: 0.5rem;
}

.tip-description {
  color: var(--text-muted);
  margin-bottom: 0;
}

/* ===== FAQ STYLES ===== */
.faq-item {
  margin-bottom: 1rem;
}

.faq-question {
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  padding: 1rem;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.faq-question:hover {
  background-color: var(--primary-color);
  color: white;
}

.faq-question.active {
  background-color: var(--primary-color);
  color: white;
  border-bottom-left-radius: 0;
  border-bottom-right-radius: 0;
}

.faq-answer {
  background-color: var(--bg-color);
  border: 1px solid var(--border-color);
  border-top: none;
  border-radius: 0 0 0.5rem 0.5rem;
  padding: 1rem;
  display: none;
}

.faq-answer.show {
  display: block;
}

.faq-icon {
  transition: var(--transition);
}

.faq-question.active .faq-icon {
  transform: rotate(180deg);
}

/* ===== TOAST STYLES ===== */
.toast {
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  color: var(--text-color);
}

.toast-header {
  background-color: var(--surface-color);
  border-bottom: 1px solid var(--border-color);
}

/* ===== AD BANNER STYLES ===== */
.ad-banner {
  text-align: center;
  padding: 1rem;
  background-color: var(--surface-color);
  border-radius: 0.5rem;
  border: 1px solid var(--border-color);
}

/* ===== LOADING SPINNER ===== */
.spinner-border {
  width: 3rem;
  height: 3rem;
}

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

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.8);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.fade-in {
  animation: fadeIn 0.5s ease-out;
}

.slide-in {
  animation: slideIn 0.5s ease-out;
}

.scale-in {
  animation: scaleIn 0.3s ease-out;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
  .hero-section {
    padding: 2rem 0;
  }
  
  .hero-section h1 {
    font-size: 2rem;
  }
  
  .section-title {
    font-size: 1.5rem;
  }
  
  .card-actions {
    flex-direction: column;
  }
  
  .card-actions .btn {
    width: 100%;
  }
  
  .comparison-table {
    font-size: 0.875rem;
  }
  
  .comparison-table th,
  .comparison-table td {
    padding: 0.5rem;
  }
  
  .filters-section .row > div {
    margin-bottom: 1rem;
  }
  
  .view-toggle {
    margin-top: 1rem;
  }
}

@media (max-width: 576px) {
  .container {
    padding-left: 1rem;
    padding-right: 1rem;
  }
  
  .hero-section h1 {
    font-size: 1.75rem;
  }
  
  .hero-section .lead {
    font-size: 1rem;
  }
  
  .card-body {
    padding: 1rem;
  }
  
  .modal-dialog {
    margin: 0.5rem;
  }
  
  .comparison-table {
    font-size: 0.75rem;
  }
  
  .tip-item,
  .glossary-item {
    padding: 1rem;
  }
}

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

.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;
}

/* Focus styles for better accessibility */
.btn:focus,
.form-control:focus,
.form-select:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .card {
    border: 2px solid var(--text-color);
  }
  
  .btn {
    border-width: 2px;
  }
}

/* ===== PRINT STYLES ===== */
@media print {
  .navbar,
  .offcanvas,
  .modal,
  .toast-container,
  .ad-banner,
  .btn,
  .filters-section {
    display: none !important;
  }
  
  .card {
    break-inside: avoid;
    box-shadow: none;
    border: 1px solid #000;
  }
  
  .hero-section {
    background: none !important;
    color: #000 !important;
  }
}