/* =============================================================================
   STARSEC LMS - Modern Design System
   Dark/Light Mode Support with Industrial Safety Theme
   ============================================================================= */

/* -----------------------------------------------------------------------------
   CSS Custom Properties (Design Tokens)
   ----------------------------------------------------------------------------- */
:root {
  /* Brand Colors */
  --brand-primary: #070a2b;
  --brand-primary-hover: #1f2bb7;
  --brand-secondary: #3b82f6;
  --brand-on-primary: #ffffff;
  
  /* Status Colors */
  --status-success: #10b981;
  --status-success-bg: #d1fae5;
  --status-warning: #f59e0b;
  --status-warning-bg: #fef3c7;
  --status-danger: #ef4444;
  --status-danger-bg: #fee2e2;
  --status-info: #3b82f6;
  --status-info-bg: #dbeafe;
  
  /* Light Mode (Default) */
  --bg-body: #f4f6f9;
  --bg-surface: #ffffff;
  --bg-surface-hover: #f8fafc;
  --bg-sidebar: var(--brand-primary);
  --bg-card: #ffffff;
  --bg-input: #ffffff;
  
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;
  --text-on-sidebar: #ffffff;
  --text-on-primary: #ffffff;
  
  --border-color: #e2e8f0;
  --border-color-strong: #cbd5e1;
  
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;
}

/* Dark Mode */
[data-theme="dark"] {
  --bg-body: #020412;
  --bg-surface: #0b0e2e;
  --bg-surface-hover: #131738;
  --bg-sidebar: #070a2b;
  --bg-card: #0f1235;
  --bg-input: #131738;
  
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  --border-color: #1e2756;
  --border-color-strong: #2d3a6d;
  
  --status-success-bg: rgba(16, 185, 129, 0.15);
  --status-warning-bg: rgba(245, 158, 11, 0.15);
  --status-danger-bg: rgba(239, 68, 68, 0.15);
  --status-info-bg: rgba(59, 130, 246, 0.15);
}

/* -----------------------------------------------------------------------------
   Typography
   ----------------------------------------------------------------------------- */
@import url('https://fonts.googleapis.com/css2?family=Barlow+Condensed:wght@400;500;600;700&family=Inter:wght@300;400;500;600;700&display=swap');

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-body);
  transition: background-color var(--transition-base), color var(--transition-base);
}

h1, h2, h3, h4, h5, h6,
.h1, .h2, .h3, .h4, .h5, .h6 {
  font-family: 'Barlow Condensed', 'Inter', sans-serif;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

h1, .h1 { font-size: 2.25rem; font-weight: 700; }
h2, .h2 { font-size: 1.875rem; }
h3, .h3 { font-size: 1.5rem; }
h4, .h4 { font-size: 1.25rem; }
h5, .h5 { font-size: 1.125rem; }
h6, .h6 { font-size: 1rem; }

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

/* -----------------------------------------------------------------------------
   Base & Reset
   ----------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
}

a {
  color: var(--brand-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--brand-primary-hover);
}

/* -----------------------------------------------------------------------------
   Layout Components
   ----------------------------------------------------------------------------- */

/* Admin Wrapper */
.admin-wrapper {
  min-height: 100vh;
  background: var(--bg-body);
}

/* Modern Sidebar */
.modern-sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: 260px;
  height: 100vh;
  background: linear-gradient(180deg, var(--brand-primary) 0%, #0a0f3d 100%);
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  z-index: 1000;
  transition: transform var(--transition-base);
}

.modern-sidebar .sidebar-brand {
  padding: var(--spacing-md) 0 var(--spacing-xl);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  margin-bottom: var(--spacing-lg);
}

.modern-sidebar .sidebar-brand-link {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  width: 100%;
  text-decoration: none;
}

.modern-sidebar .sidebar-brand img {
  display: block;
  width: 100%;
  max-width: 180px;
  height: auto;
  max-height: 70px;
  object-fit: contain;
}

.modern-sidebar .sidebar-title {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: var(--spacing-md);
  padding-left: var(--spacing-md);
}

.modern-sidebar .nav-menu {
  list-style: none;
  padding: 0;
  margin: 0;
}

.modern-sidebar .nav-item {
  margin-bottom: var(--spacing-xs);
}

.modern-sidebar .nav-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md) var(--spacing-md);
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}

.modern-sidebar .nav-link:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
}

.modern-sidebar .nav-link.active {
  color: #fff;
  background: var(--brand-primary-hover);
  box-shadow: 0 4px 12px rgba(31, 43, 183, 0.4);
}

.modern-sidebar .nav-link i,
.modern-sidebar .nav-link .bi {
  width: 20px;
  text-align: center;
  font-size: 1.1rem;
  opacity: 0.8;
}

.modern-sidebar .nav-link.active i,
.modern-sidebar .nav-link.active .bi {
  opacity: 1;
}

/* Main Content Area */
.main-content {
  margin-left: 260px;
  padding: var(--spacing-xl);
  min-height: 100vh;
}

/* Page Header */
.page-header {
  margin-bottom: var(--spacing-xl);
}

.page-header h2 {
  margin: 0 0 var(--spacing-xs);
  font-size: 1.75rem;
}

.page-header .page-subtitle {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin: 0;
}

/* -----------------------------------------------------------------------------
   Cards
   ----------------------------------------------------------------------------- */
.card,
.modern-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.card:hover,
.modern-card:hover {
  box-shadow: var(--shadow-md);
}

.card-header {
  background: transparent;
  border-bottom: 1px solid var(--border-color);
  padding: var(--spacing-lg);
}

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

.card-title {
  font-family: 'Barlow Condensed', sans-serif;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

/* Stat Cards */
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--spacing-lg);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-base);
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--brand-primary);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

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

.stat-card:hover::before {
  opacity: 1;
}

.stat-card .stat-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  margin-bottom: var(--spacing-md);
}

.stat-card .stat-icon.success { background: var(--status-success-bg); color: var(--status-success); }
.stat-card .stat-icon.warning { background: var(--status-warning-bg); color: var(--status-warning); }
.stat-card .stat-icon.danger { background: var(--status-danger-bg); color: var(--status-danger); }
.stat-card .stat-icon.info { background: var(--status-info-bg); color: var(--status-info); }
.stat-card .stat-icon.primary { background: rgba(7, 10, 43, 0.1); color: var(--brand-primary); }

[data-theme="dark"] .stat-card .stat-icon.primary {
  background: rgba(59, 130, 246, 0.15);
  color: var(--brand-secondary);
}

.stat-card .stat-value {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}

.stat-card .stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: var(--spacing-xs);
}

/* Course Cards */
.course-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--transition-base);
}

.course-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.course-card .course-image {
  width: 100%;
  height: 160px;
  object-fit: cover;
  background: linear-gradient(135deg, var(--brand-primary) 0%, var(--brand-primary-hover) 100%);
}

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

.course-card .course-title {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.course-card .course-meta {
  display: flex;
  gap: var(--spacing-md);
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: var(--spacing-md);
}

.course-card .course-meta span {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.course-card .progress {
  height: 6px;
  background: var(--border-color);
  border-radius: var(--radius-full);
  margin-bottom: var(--spacing-md);
}

.course-card .progress-bar {
  background: linear-gradient(90deg, var(--brand-primary) 0%, var(--brand-primary-hover) 100%);
  border-radius: var(--radius-full);
}

/* -----------------------------------------------------------------------------
   Buttons
   ----------------------------------------------------------------------------- */
.btn {
  font-weight: 500;
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  border: none;
  cursor: pointer;
  font-size: 0.9rem;
}

.btn-primary,
.btn-meu {
  background: var(--brand-primary);
  color: var(--brand-on-primary);
  border: 1px solid var(--brand-primary);
}

.btn-primary:hover,
.btn-meu:hover {
  background: var(--brand-primary-hover);
  border-color: var(--brand-primary-hover);
  color: var(--brand-on-primary);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(7, 10, 43, 0.25);
}

.btn-outline-primary {
  background: transparent;
  color: var(--brand-primary);
  border: 1px solid var(--brand-primary);
}

[data-theme="dark"] .btn-outline-primary {
  color: var(--brand-secondary);
  border-color: var(--brand-secondary);
}

.btn-outline-primary:hover {
  background: var(--brand-primary);
  color: var(--brand-on-primary);
}

.btn-outline-secondary {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
}

.btn-outline-secondary:hover {
  background: var(--bg-surface-hover);
  border-color: var(--border-color-strong);
  color: var(--text-primary);
}

.btn-success {
  background: var(--status-success);
  color: #fff;
  border: 1px solid var(--status-success);
}

.btn-success:hover {
  background: #059669;
  border-color: #059669;
  color: #fff;
}

.btn-danger,
.btn-apagar {
  background: var(--status-danger);
  color: #fff;
  border: 1px solid var(--status-danger);
}

.btn-danger:hover,
.btn-apagar:hover {
  background: #dc2626;
  border-color: #dc2626;
  color: #fff;
}

.btn-sm {
  padding: 0.375rem 0.875rem;
  font-size: 0.8125rem;
}

.btn-lg {
  padding: 0.875rem 1.75rem;
  font-size: 1rem;
}

/* -----------------------------------------------------------------------------
   Forms & Inputs
   ----------------------------------------------------------------------------- */
.form-control,
.form-select {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  padding: 0.625rem 0.875rem;
  font-size: 0.9rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus,
.form-select:focus {
  background: var(--bg-input);
  border-color: var(--brand-primary-hover);
  box-shadow: 0 0 0 3px rgba(31, 43, 183, 0.15);
  color: var(--text-primary);
  outline: none;
}

.form-control::placeholder {
  color: var(--text-muted);
}

.form-label {
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
  font-size: 0.875rem;
}

.input-group {
  border-radius: var(--radius-md);
}

.input-group .form-control {
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
}

.input-group .btn {
  border-top-left-radius: 0;
  border-bottom-left-radius: 0;
}

/* -----------------------------------------------------------------------------
   Tables
   ----------------------------------------------------------------------------- */
.table {
  --bs-table-bg: var(--bg-card);
  --bs-table-color: var(--text-primary);
  --bs-table-border-color: var(--border-color);
  --bs-table-striped-bg: var(--bg-surface-hover);
  --bs-table-hover-bg: var(--bg-surface-hover);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.table thead {
  background: var(--bg-surface);
}

.table thead th {
  font-family: 'Barlow Condensed', sans-serif;
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  padding: var(--spacing-md) var(--spacing-lg);
  border-bottom: 2px solid var(--border-color);
}

.table tbody td {
  padding: var(--spacing-md) var(--spacing-lg);
  vertical-align: middle;
}

.table-striped > tbody > tr:nth-of-type(odd) > * {
  background: var(--bg-surface-hover);
}

.table-container {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  overflow: hidden;
}

/* -----------------------------------------------------------------------------
   Progress Bars
   ----------------------------------------------------------------------------- */
.progress {
  height: 8px;
  background: var(--border-color);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar {
  background: linear-gradient(90deg, var(--brand-primary) 0%, var(--brand-primary-hover) 100%);
  border-radius: var(--radius-full);
  transition: width var(--transition-slow);
}

.progress-bar.bg-success {
  background: linear-gradient(90deg, var(--status-success) 0%, #059669 100%);
}

/* -----------------------------------------------------------------------------
   Badges
   ----------------------------------------------------------------------------- */
.badge {
  font-weight: 500;
  font-size: 0.75rem;
  padding: 0.35em 0.65em;
  border-radius: var(--radius-sm);
}

.badge.bg-success { background: var(--status-success) !important; }
.badge.bg-warning { background: var(--status-warning) !important; color: #000; }
.badge.bg-danger { background: var(--status-danger) !important; }
.badge.bg-info { background: var(--status-info) !important; }
.badge.bg-primary { background: var(--brand-primary) !important; }

.badge.bg-success-subtle { background: var(--status-success-bg) !important; color: var(--status-success); }
.badge.bg-warning-subtle { background: var(--status-warning-bg) !important; color: var(--status-warning); }
.badge.bg-danger-subtle { background: var(--status-danger-bg) !important; color: var(--status-danger); }
.badge.bg-info-subtle { background: var(--status-info-bg) !important; color: var(--status-info); }
.badge.bg-primary-subtle { background: rgba(7, 10, 43, 0.1) !important; color: var(--brand-primary); }

[data-theme="dark"] .badge.bg-primary-subtle {
  background: rgba(59, 130, 246, 0.15) !important;
  color: var(--brand-secondary);
}

/* -----------------------------------------------------------------------------
   Alerts
   ----------------------------------------------------------------------------- */
.alert {
  border-radius: var(--radius-lg);
  border: 1px solid;
  padding: var(--spacing-md) var(--spacing-lg);
}

.alert-success {
  background: var(--status-success-bg);
  border-color: var(--status-success);
  color: var(--status-success);
}

.alert-warning {
  background: var(--status-warning-bg);
  border-color: var(--status-warning);
  color: #92400e;
}

.alert-danger {
  background: var(--status-danger-bg);
  border-color: var(--status-danger);
  color: var(--status-danger);
}

.alert-info {
  background: var(--status-info-bg);
  border-color: var(--status-info);
  color: var(--status-info);
}

[data-theme="dark"] .alert-warning {
  color: var(--status-warning);
}

/* -----------------------------------------------------------------------------
   Accordion
   ----------------------------------------------------------------------------- */
.accordion {
  --bs-accordion-bg: var(--bg-card);
  --bs-accordion-border-color: var(--border-color);
  --bs-accordion-btn-color: var(--text-primary);
  --bs-accordion-active-color: var(--brand-primary);
  --bs-accordion-active-bg: var(--bg-surface-hover);
}

.accordion-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  margin-bottom: var(--spacing-sm);
  border-radius: var(--radius-lg) !important;
  overflow: hidden;
}

.accordion-button {
  font-family: 'Barlow Condensed', sans-serif;
  font-weight: 600;
  font-size: 1rem;
  background: var(--bg-card);
  color: var(--text-primary);
  padding: var(--spacing-md) var(--spacing-lg);
}

.accordion-button:not(.collapsed) {
  background: var(--bg-surface-hover);
  color: var(--brand-primary);
  box-shadow: none;
}

[data-theme="dark"] .accordion-button:not(.collapsed) {
  color: var(--brand-secondary);
}

.accordion-button:focus {
  box-shadow: none;
  border-color: var(--border-color);
}

.accordion-button::after {
  filter: brightness(0) saturate(100%);
}

[data-theme="dark"] .accordion-button::after {
  filter: brightness(0) invert(1);
}

.accordion-body {
  background: var(--bg-card);
  color: var(--text-primary);
}

/* -----------------------------------------------------------------------------
   Modal
   ----------------------------------------------------------------------------- */
.modal-content {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
}

.modal-header {
  border-bottom: 1px solid var(--border-color);
  padding: var(--spacing-lg);
}

.modal-title {
  font-family: 'Barlow Condensed', sans-serif;
  font-weight: 600;
}

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

.modal-footer {
  border-top: 1px solid var(--border-color);
  padding: var(--spacing-lg);
}

.btn-close {
  filter: var(--bs-btn-close-white-filter);
}

[data-theme="dark"] .btn-close {
  filter: invert(1);
}

/* -----------------------------------------------------------------------------
   Dashboard Specific Styles
   ----------------------------------------------------------------------------- */

/* Dashboard Grid */
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--spacing-lg);
}

.dashboard-grid .col-span-3 { grid-column: span 3; }
.dashboard-grid .col-span-4 { grid-column: span 4; }
.dashboard-grid .col-span-6 { grid-column: span 6; }
.dashboard-grid .col-span-8 { grid-column: span 8; }
.dashboard-grid .col-span-12 { grid-column: span 12; }

@media (max-width: 1200px) {
  .dashboard-grid .col-span-3 { grid-column: span 6; }
  .dashboard-grid .col-span-4 { grid-column: span 6; }
}

@media (max-width: 768px) {
  .dashboard-grid .col-span-3,
  .dashboard-grid .col-span-4,
  .dashboard-grid .col-span-6,
  .dashboard-grid .col-span-8 { grid-column: span 12; }
}

/* Student Dashboard */
.dashboard-wrapper {
  background: var(--bg-body);
  padding: var(--spacing-lg);
  border-radius: var(--radius-xl);
  min-height: calc(100vh - 120px);
}

.profile-avatar {
  width: 96px;
  height: 96px;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, var(--brand-primary) 0%, var(--brand-primary-hover) 100%);
  display: grid;
  place-items: center;
  box-shadow: var(--shadow-lg);
}

.sidebar-menu .btn {
  border-radius: var(--radius-lg);
  font-weight: 500;
  color: var(--text-secondary);
  background: transparent;
  border: none;
  justify-content: flex-start;
  transition: all var(--transition-fast);
}

.sidebar-menu .btn:hover {
  background: var(--bg-surface-hover);
  color: var(--text-primary);
}

.sidebar-menu .btn.active {
  background: rgba(31, 43, 183, 0.1);
  color: var(--brand-primary);
}

[data-theme="dark"] .sidebar-menu .btn.active {
  background: rgba(59, 130, 246, 0.15);
  color: var(--brand-secondary);
}

.stat-card-v2 {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--spacing-lg);
  transition: all var(--transition-base);
}

.stat-card-v2:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.icon-circle {
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-lg);
}

.hover-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  transition: all var(--transition-base);
}

.hover-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-color-strong);
}

.thumb-sm {
  width: 72px;
  height: 72px;
  background: var(--bg-surface-hover);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

/* -----------------------------------------------------------------------------
   List Group
   ----------------------------------------------------------------------------- */
.list-group {
  --bs-list-group-bg: var(--bg-card);
  --bs-list-group-border-color: var(--border-color);
  --bs-list-group-color: var(--text-primary);
  --bs-list-group-action-hover-bg: var(--bg-surface-hover);
}

.list-group-item {
  background: var(--bg-card);
  border-color: var(--border-color);
  color: var(--text-primary);
}

.list-group-item.bg-light {
  background: var(--bg-surface-hover) !important;
}

/* -----------------------------------------------------------------------------
   Pagination
   ----------------------------------------------------------------------------- */
.pagination {
  --bs-pagination-bg: var(--bg-card);
  --bs-pagination-border-color: var(--border-color);
  --bs-pagination-color: var(--text-primary);
  --bs-pagination-hover-bg: var(--bg-surface-hover);
  --bs-pagination-hover-border-color: var(--border-color-strong);
  --bs-pagination-focus-box-shadow: 0 0 0 0.25rem rgba(31, 43, 183, 0.25);
  --bs-pagination-active-bg: var(--brand-primary);
  --bs-pagination-active-border-color: var(--brand-primary);
}

.page-link {
  border-radius: var(--radius-md);
  margin: 0 2px;
}

/* -----------------------------------------------------------------------------
   Responsive
   ----------------------------------------------------------------------------- */
@media (max-width: 991.98px) {
  .modern-sidebar {
    transform: translateX(-100%);
    width: 280px;
  }
  
  .modern-sidebar.show {
    transform: translateX(0);
  }
  
  .main-content {
    margin-left: 0;
    padding: var(--spacing-md);
  }
  
  .sidebar-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
  }
  
  .sidebar-overlay.show {
    opacity: 1;
    visibility: visible;
  }
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  position: fixed;
  top: var(--spacing-md);
  left: var(--spacing-md);
  z-index: 1001;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-md);
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-primary);
}

@media (max-width: 991.98px) {
  .mobile-menu-toggle {
    display: flex;
  }
}

/* -----------------------------------------------------------------------------
   Utilities
   ----------------------------------------------------------------------------- */
.bg-surface { background: var(--bg-surface) !important; }
.bg-body { background: var(--bg-body) !important; }
.text-primary-color { color: var(--text-primary) !important; }
.border-subtle { border-color: var(--border-color) !important; }

.shadow-card { box-shadow: var(--shadow-md); }
.shadow-elevated { box-shadow: var(--shadow-lg); }

.rounded-xl { border-radius: var(--radius-xl) !important; }
.rounded-2xl { border-radius: var(--radius-2xl) !important; }

/* Animation */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-fade-in {
  animation: fadeIn 0.3s ease-out forwards;
}

/* -----------------------------------------------------------------------------
   Legacy Overrides (Bootstrap Compatibility)
   ----------------------------------------------------------------------------- */
.container-fluid {
  padding-left: var(--spacing-lg);
  padding-right: var(--spacing-lg);
}

.nav-link {
  color: var(--text-secondary);
}

.nav-link:hover {
  color: var(--brand-primary);
}

[data-theme="dark"] .nav-link:hover {
  color: var(--brand-secondary);
}

.dropdown-menu {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.dropdown-item {
  color: var(--text-primary);
  padding: var(--spacing-sm) var(--spacing-md);
}

.dropdown-item:hover {
  background: var(--bg-surface-hover);
  color: var(--text-primary);
}

/* Override old styles */
.btn:not(.btn-link):not(.btn-outline-danger):not(.btn-danger):not(.btn-apagar) {
  background-color: var(--brand-primary) !important;
  color: var(--brand-on-primary) !important;
  border-color: var(--brand-primary) !important;
}

.btn:not(.btn-link):not(.btn-outline-danger):not(.btn-danger):not(.btn-apagar):hover {
  background-color: var(--brand-primary-hover) !important;
  border-color: var(--brand-primary-hover) !important;
}

/* Fix chart visibility in dark mode */
[data-theme="dark"] canvas {
  filter: none;
}

/* -----------------------------------------------------------------------------
   Player Styles
   ----------------------------------------------------------------------------- */
.player-sidebar {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
}

.player-sidebar .card-title {
  font-family: 'Barlow Condensed', sans-serif;
}

.player-main {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
}

.player-main .video-container {
  background: #000;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.player-main .ratio-16x9 {
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.player-main iframe {
  border: none;
}

/* Breadcrumb */
.breadcrumb {
  background: transparent;
  padding: 0;
  margin: 0;
}

.breadcrumb-item a {
  color: var(--text-secondary);
}

.breadcrumb-item a:hover {
  color: var(--brand-primary);
}

[data-theme="dark"] .breadcrumb-item a:hover {
  color: var(--brand-secondary);
}

.breadcrumb-item.active {
  color: var(--text-muted);
}

.breadcrumb-item + .breadcrumb-item::before {
  color: var(--text-muted);
}

/* Input Group Styles */
.input-group-text {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
}

/* Avatar Utilities */
.avatar-sm {
  width: 32px;
  height: 32px;
  font-size: 0.75rem;
}

/* Code Styling */
code {
  background: var(--bg-surface-hover);
  padding: 0.2em 0.4em;
  border-radius: var(--radius-sm);
  color: var(--brand-primary);
  font-size: 0.875em;
}

[data-theme="dark"] code {
  color: var(--brand-secondary);
}

/* Certificate Icon */
.certificate-icon {
  box-shadow: var(--shadow-lg);
}

/* Form Check Custom */
.form-check-input:checked {
  background-color: var(--brand-primary);
  border-color: var(--brand-primary);
}

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

::-webkit-scrollbar-track {
  background: var(--bg-surface);
}

::-webkit-scrollbar-thumb {
  background: var(--border-color-strong);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* Focus Visible */
:focus-visible {
  outline: 2px solid var(--brand-primary-hover);
  outline-offset: 2px;
}

[data-theme="dark"] :focus-visible {
  outline-color: var(--brand-secondary);
}