/**
 * YS4A Platform - Enterprise Design System
 * Sharp edges, dark mode, accessibility-first
 */

/* ============================================
   DESIGN TOKENS
   ============================================ */

:root {
  /* Brand Colors */
  --brand-primary: #0A2540;
  --brand-secondary: #2563EB;
  --brand-accent: #22C55E;

  /* Light Mode Colors */
  --light-bg: #F8FAFC;
  --light-surface: #FFFFFF;
  --light-border: #E5E7EB;
  --light-text-primary: #0F172A;
  --light-text-secondary: #475569;

  /* Status Colors */
  --status-success: #16A34A;
  --status-warning: #D97706;
  --status-error: #DC2626;
  --status-info: #0284C7;

  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;

  /* Typography */
  --font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-h1: 32px;
  --font-size-h2: 24px;
  --font-size-h3: 20px;
  --font-size-body: 14px;
  --font-size-small: 12px;
  --line-height-heading: 1.3;
  --line-height-body: 1.6;

  /* Border Radius (Sharp Edges) */
  --radius-default: 2px;
  --radius-card: 2px;
  --radius-button: 2px;
  --radius-input: 2px;
  --radius-modal: 4px;
  --radius-avatar: 50%;

  /* Shadows */
  --shadow-none: none;
  --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-modal: 0 10px 30px rgba(0, 0, 0, 0.15);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 200ms ease;

  /* Current Theme (Light by default) */
  --bg: var(--light-bg);
  --surface: var(--light-surface);
  --border: var(--light-border);
  --text-primary: var(--light-text-primary);
  --text-secondary: var(--light-text-secondary);
}

/* ============================================
   DARK MODE
   ============================================ */

[data-theme="dark"] {
  --bg: #020617;
  --surface: #0F172A;
  --surface-alt: #1E293B;
  --border: #334155;
  --text-primary: #F1F5F9;
  --text-secondary: #CBD5E1;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #020617;
    --surface: #0F172A;
    --surface-alt: #1E293B;
    --border: #334155;
    --text-primary: #F1F5F9;
    --text-secondary: #CBD5E1;
  }
}

/* ============================================
   BASE STYLES
   ============================================ */

* {
  box-sizing: border-box;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-body);
  line-height: var(--line-height-body);
  background-color: var(--bg);
  color: var(--text-primary);
  margin: 0;
  padding: 0;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family);
  font-weight: 600;
  line-height: var(--line-height-heading);
  color: var(--text-primary);
  margin: 0;
}

h1 { font-size: var(--font-size-h1); }
h2 { font-size: var(--font-size-h2); }
h3 { font-size: var(--font-size-h3); }

p, span, div {
  color: var(--text-primary);
}

/* Links use brand color by default */
a {
  color: var(--brand-primary);
  text-decoration: none;
}

a:hover {
  color: var(--brand-secondary);
  text-decoration: underline;
}

small {
  font-size: var(--font-size-small);
  color: var(--text-secondary);
}

/* ============================================
   CARDS (Sharp Edges)
   ============================================ */

.ys4a-card-surface {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: var(--spacing-md);
  transition: box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.ys4a-card-surface.p-0 {
  padding: 0;
}

.ys4a-card-surface:hover {
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.08);
}

/* Dark mode card enhancement */
[data-theme="dark"] .ys4a-card-surface {
  background-color: var(--surface);
  border: 1px solid var(--border);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .ys4a-card-surface:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
  border-color: #475569;
}

/* ============================================
   BUTTONS (Sharp Edges)
   ============================================ */

.btn {
  border-radius: var(--radius-button);
  font-weight: 500;
  font-size: var(--font-size-body);
  padding: var(--spacing-sm) var(--spacing-md);
  transition: all var(--transition-fast);
  border: 1px solid transparent;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}

.btn:focus-visible {
  outline: 2px solid var(--brand-secondary);
  outline-offset: 2px;
}

/* Override Bootstrap button styles with higher specificity */
button.btn-primary,
a.btn-primary,
button.btn-ys4a-primary,
a.btn-ys4a-primary {
  background-color: var(--brand-primary) !important;
  color: #FFFFFF !important;
  border-color: var(--brand-primary) !important;
}

button.btn-primary:hover,
a.btn-primary:hover,
button.btn-primary:focus,
a.btn-primary:focus,
button.btn-primary:active,
a.btn-primary:active,
button.btn-ys4a-primary:hover,
a.btn-ys4a-primary:hover,
button.btn-ys4a-primary:focus,
a.btn-ys4a-primary:focus,
button.btn-ys4a-primary:active,
a.btn-ys4a-primary:active {
  background-color: #0C2F4F !important;
  border-color: #0C2F4F !important;
  color: #FFFFFF !important;
  transform: translateY(-1px);
}

button.btn-outline-primary,
a.btn-outline-primary,
button.btn-ys4a-outline,
a.btn-ys4a-outline {
  background-color: transparent !important;
  color: var(--brand-primary) !important;
  border-color: var(--border) !important;
}

button.btn-outline-primary:hover,
a.btn-outline-primary:hover,
button.btn-outline-primary:focus,
a.btn-outline-primary:focus,
button.btn-outline-primary:active,
a.btn-outline-primary:active,
button.btn-ys4a-outline:hover,
a.btn-ys4a-outline:hover,
button.btn-ys4a-outline:focus,
a.btn-ys4a-outline:focus,
button.btn-ys4a-outline:active,
a.btn-ys4a-outline:active {
  background-color: var(--brand-primary) !important;
  color: #FFFFFF !important;
  border-color: var(--brand-primary) !important;
}

/* Force white text on all navy button states - highest priority override for Bootstrap */
.btn.btn-ys4a-primary,
.btn.btn-ys4a-primary *,
.btn.btn-ys4a-primary:hover,
.btn.btn-ys4a-primary:hover *,
.btn.btn-ys4a-primary:focus,
.btn.btn-ys4a-primary:focus *,
.btn.btn-ys4a-primary:active,
.btn.btn-ys4a-primary:active *,
.btn.btn-ys4a-primary:not(:disabled):not(.disabled):hover,
.btn.btn-ys4a-primary:not(:disabled):not(.disabled):focus,
.btn.btn-ys4a-primary:not(:disabled):not(.disabled):active {
  color: #FFFFFF !important;
}

.btn.btn-ys4a-outline:hover,
.btn.btn-ys4a-outline:hover *,
.btn.btn-ys4a-outline:focus,
.btn.btn-ys4a-outline:focus *,
.btn.btn-ys4a-outline:active,
.btn.btn-ys4a-outline:active *,
.btn.btn-ys4a-outline:not(:disabled):not(.disabled):hover,
.btn.btn-ys4a-outline:not(:disabled):not(.disabled):focus,
.btn.btn-ys4a-outline:not(:disabled):not(.disabled):active {
  color: #FFFFFF !important;
}

/* Also override Bootstrap's .btn-primary if it's being used */
.btn.btn-primary:hover,
.btn.btn-primary:focus,
.btn.btn-primary:active,
.btn.btn-primary:not(:disabled):not(.disabled):hover,
.btn.btn-primary:not(:disabled):not(.disabled):focus,
.btn.btn-primary:not(:disabled):not(.disabled):active {
  color: #FFFFFF !important;
}

.btn-secondary {
  background-color: var(--text-secondary);
  color: #FFFFFF;
  border-color: var(--text-secondary);
}

.btn-success {
  background-color: var(--status-success);
  color: #FFFFFF;
  border-color: var(--status-success);
}

.btn-warning {
  background-color: var(--status-warning);
  color: #FFFFFF;
  border-color: var(--status-warning);
}

.btn-danger {
  background-color: var(--status-error);
  color: #FFFFFF;
  border-color: var(--status-error);
}

.btn-info {
  background-color: var(--status-info);
  color: #FFFFFF;
  border-color: var(--status-info);
}

.btn-sm {
  font-size: var(--font-size-small);
  padding: var(--spacing-xs) var(--spacing-sm);
}

.btn-lg {
  font-size: var(--font-size-h3);
  padding: var(--spacing-md) var(--spacing-lg);
}

/* ============================================
   INPUTS & FORMS (Sharp Edges)
   ============================================ */

.form-control,
.form-select {
  border-radius: var(--radius-input);
  border: 1px solid var(--border);
  background-color: var(--surface);
  color: var(--text-primary);
  font-size: var(--font-size-body);
  padding: var(--spacing-sm) var(--spacing-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus,
.form-select:focus {
  outline: none;
  border-color: var(--brand-secondary);
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.1);
}

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

.form-label {
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
  font-size: var(--font-size-body);
}

/* ============================================
   TABLES
   ============================================ */

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

.table thead {
  background-color: var(--surface);
  border-bottom: 2px solid var(--border);
}

.table th {
  font-weight: 600;
  color: var(--text-primary);
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--border);
}

.table td {
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--border);
  color: var(--text-primary);
}

.table-hover tbody tr:hover {
  background-color: var(--bg);
}

/* ============================================
   ADMIN TABLES DARK MODE
   ============================================ */

[data-theme="dark"] .table {
  background-color: var(--surface) !important;
  color: var(--text-primary) !important;
}

[data-theme="dark"] .table thead {
  background-color: var(--surface-alt) !important;
  border-bottom: 2px solid var(--border) !important;
}

[data-theme="dark"] .table thead th {
  background-color: var(--surface-alt) !important;
  color: var(--text-primary) !important;
  border-bottom: 2px solid var(--border) !important;
}

[data-theme="dark"] .table tbody {
  background-color: var(--surface) !important;
}

[data-theme="dark"] .table tbody tr {
  background-color: var(--surface) !important;
  border-bottom: 1px solid var(--border) !important;
}

[data-theme="dark"] .table tbody td {
  background-color: var(--surface) !important;
  color: var(--text-primary) !important;
  border-bottom: 1px solid var(--border) !important;
}

[data-theme="dark"] .table-hover tbody tr:hover {
  background-color: var(--surface-alt) !important;
}

[data-theme="dark"] .table tbody tr:hover td {
  background-color: var(--surface-alt) !important;
  color: var(--text-primary) !important;
}

/* Table responsive wrapper */
[data-theme="dark"] .table-responsive {
  background-color: var(--surface) !important;
}

/* Table striped rows */
[data-theme="dark"] .table-striped tbody tr:nth-of-type(odd) {
  background-color: var(--surface) !important;
}

[data-theme="dark"] .table-striped tbody tr:nth-of-type(even) {
  background-color: var(--surface-alt) !important;
}

[data-theme="dark"] .table-striped tbody tr:nth-of-type(odd) td {
  background-color: var(--surface) !important;
}

[data-theme="dark"] .table-striped tbody tr:nth-of-type(even) td {
  background-color: var(--surface-alt) !important;
}

/* ============================================
   ADMIN PAGE GENERAL DARK MODE FIXES
   ============================================ */

/* Form selects in tables */
[data-theme="dark"] .table .form-select,
[data-theme="dark"] .table .form-control {
  background-color: var(--surface-alt) !important;
  color: var(--text-primary) !important;
  border-color: var(--border) !important;
}

[data-theme="dark"] .table .form-select:focus,
[data-theme="dark"] .table .form-control:focus {
  background-color: var(--surface-alt) !important;
  color: var(--text-primary) !important;
  border-color: var(--brand-secondary) !important;
}

/* Badges in tables */
[data-theme="dark"] .table .badge {
  color: #FFFFFF !important;
}

/* Text muted in tables */
[data-theme="dark"] .table .text-muted {
  color: var(--text-secondary) !important;
}

/* Links in tables */
[data-theme="dark"] .table a {
  color: #60A5FA !important;
}

[data-theme="dark"] .table a:hover {
  color: #93C5FD !important;
}

/* Empty state messages */
[data-theme="dark"] .table td.text-center.text-muted {
  color: var(--text-secondary) !important;
}

/* Admin card surfaces - ensure they're visible */
[data-theme="dark"] .ys4a-card-surface {
  background-color: var(--surface) !important;
  border-color: var(--border) !important;
}

/* Pagination */
[data-theme="dark"] .pagination .page-link {
  background-color: var(--surface) !important;
  border-color: var(--border) !important;
  color: var(--text-primary) !important;
}

[data-theme="dark"] .pagination .page-link:hover {
  background-color: var(--surface-alt) !important;
  color: var(--text-primary) !important;
}

[data-theme="dark"] .pagination .page-item.active .page-link {
  background-color: var(--brand-primary) !important;
  border-color: var(--brand-primary) !important;
  color: #FFFFFF !important;
}

[data-theme="dark"] .pagination .page-item.disabled .page-link {
  background-color: var(--surface) !important;
  color: var(--text-secondary) !important;
}

/* Bootstrap table utility classes */
[data-theme="dark"] .table-light {
  background-color: var(--surface-alt) !important;
  color: var(--text-primary) !important;
}

[data-theme="dark"] .table-light thead {
  background-color: var(--surface-alt) !important;
}

[data-theme="dark"] .table-light thead th {
  background-color: var(--surface-alt) !important;
  color: var(--text-primary) !important;
}

[data-theme="dark"] .table-dark {
  background-color: var(--surface) !important;
  color: var(--text-primary) !important;
}

[data-theme="dark"] .table-sm th,
[data-theme="dark"] .table-sm td {
  padding: var(--spacing-sm) var(--spacing-md) !important;
}

/* Code elements in tables */
[data-theme="dark"] .table code {
  background-color: var(--surface-alt) !important;
  color: var(--text-primary) !important;
  padding: 2px 6px;
  border-radius: 2px;
}

/* Admin page specific fixes */
[data-theme="dark"] .table-responsive {
  border: 1px solid var(--border) !important;
}

/* Ensure all admin tables have proper styling */
[data-theme="dark"] .ys4a-card-surface .table {
  background-color: transparent !important;
}

[data-theme="dark"] .ys4a-card-surface .table thead {
  background-color: var(--surface-alt) !important;
}

[data-theme="dark"] .ys4a-card-surface .table tbody {
  background-color: transparent !important;
}

[data-theme="dark"] .ys4a-card-surface .table tbody tr {
  background-color: transparent !important;
}

[data-theme="dark"] .ys4a-card-surface .table-hover tbody tr:hover {
  background-color: var(--surface-alt) !important;
}

/* ============================================
   DATATABLES DARK MODE
   ============================================ */

[data-theme="dark"] .dataTables_wrapper {
  color: var(--text-primary) !important;
}

[data-theme="dark"] .dataTables_wrapper .dataTables_length,
[data-theme="dark"] .dataTables_wrapper .dataTables_filter {
  color: var(--text-primary) !important;
}

[data-theme="dark"] .dataTables_wrapper .dataTables_length select,
[data-theme="dark"] .dataTables_wrapper .dataTables_filter input {
  background-color: var(--surface-alt) !important;
  color: var(--text-primary) !important;
  border-color: var(--border) !important;
}

[data-theme="dark"] .dataTables_wrapper .dataTables_info {
  color: var(--text-secondary) !important;
}

[data-theme="dark"] .dataTables_wrapper .dataTables_paginate .paginate_button {
  background-color: var(--surface) !important;
  border-color: var(--border) !important;
  color: var(--text-primary) !important;
}

[data-theme="dark"] .dataTables_wrapper .dataTables_paginate .paginate_button:hover {
  background-color: var(--surface-alt) !important;
  color: var(--text-primary) !important;
}

[data-theme="dark"] .dataTables_wrapper .dataTables_paginate .paginate_button.current {
  background-color: var(--brand-primary) !important;
  border-color: var(--brand-primary) !important;
  color: #FFFFFF !important;
}

[data-theme="dark"] .dataTables_wrapper .dataTables_paginate .paginate_button.disabled {
  background-color: var(--surface) !important;
  color: var(--text-secondary) !important;
}

[data-theme="dark"] .dataTables_wrapper .dataTables_processing {
  background-color: var(--surface) !important;
  color: var(--text-primary) !important;
}

/* ============================================
   BADGES
   ============================================ */

.badge {
  border-radius: var(--radius-default);
  font-weight: 500;
  font-size: var(--font-size-small);
  padding: var(--spacing-xs) var(--spacing-sm);
  display: inline-flex;
  align-items: center;
}

.bg-primary { background-color: var(--brand-primary); }
.bg-success { background-color: var(--status-success); }
.bg-warning { background-color: var(--status-warning); }
.bg-danger { background-color: var(--status-error); }
.bg-info { background-color: var(--status-info); }
.bg-secondary { background-color: var(--text-secondary); }

/* ============================================
   MODALS (Sharp Edges)
   ============================================ */

.modal-content {
  border-radius: var(--radius-modal);
  border: 1px solid var(--border);
  background-color: var(--surface);
  box-shadow: var(--shadow-modal);
}

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

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

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

/* ============================================
   NAVBAR
   ============================================ */

.ys4a-navbar {
  background-color: var(--surface);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(10px);
  padding: var(--spacing-md) 0;
}

.ys4a-nav-link {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: var(--font-size-body);
  text-decoration: none;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-default);
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.ys4a-nav-link:hover,
.ys4a-nav-link:focus {
  color: var(--brand-primary);
  background-color: var(--bg);
}

.ys4a-nav-link.active {
  color: var(--brand-primary);
  background-color: var(--bg);
}

/* ============================================
   DARK MODE TOGGLE
   ============================================ */

.theme-toggle {
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-button);
  color: var(--text-primary);
  padding: var(--spacing-xs) var(--spacing-sm);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  font-size: var(--font-size-body);
}

.theme-toggle:hover {
  background-color: var(--bg);
  border-color: var(--brand-secondary);
}

.theme-toggle:focus-visible {
  outline: 2px solid var(--brand-secondary);
  outline-offset: 2px;
}

/* ============================================
   DROPDOWNS
   ============================================ */

.dropdown-menu {
  border-radius: var(--radius-default);
  border: 1px solid var(--border);
  background-color: var(--surface);
  box-shadow: var(--shadow-card);
  padding: var(--spacing-xs);
}

.dropdown-item {
  border-radius: var(--radius-default);
  color: var(--text-primary);
  padding: var(--spacing-sm) var(--spacing-md);
  transition: background-color var(--transition-fast);
}

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

/* ============================================
   BOOTSTRAP CARD DARK MODE FIX
   ============================================ */

[data-theme="dark"] .card,
[data-theme="dark"] .card-body {
  background-color: var(--surface) !important;
  border: 1px solid var(--border) !important;
  color: var(--text-primary) !important;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3) !important;
}

[data-theme="dark"] .card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4) !important;
  border-color: #475569 !important;
}

[data-theme="dark"] .card .text-muted,
[data-theme="dark"] .card-body .text-muted {
  color: var(--text-secondary) !important;
}

/* ============================================
   LINKS DARK MODE FIX
   ============================================ */

[data-theme="dark"] a {
  color: #60A5FA !important;
}

[data-theme="dark"] a:hover,
[data-theme="dark"] a:focus {
  color: #93C5FD !important;
  text-decoration: underline;
}

[data-theme="dark"] .text-muted a {
  color: #93C5FD !important;
}

[data-theme="dark"] .text-muted a:hover {
  color: #DBEAFE !important;
  text-decoration: underline;
}

/* Ensure all links are visible in dark mode */
[data-theme="dark"] .card a,
[data-theme="dark"] .ys4a-card-surface a,
[data-theme="dark"] .card-body a {
  color: #60A5FA !important;
}

[data-theme="dark"] .card a:hover,
[data-theme="dark"] .ys4a-card-surface a:hover,
[data-theme="dark"] .card-body a:hover {
  color: #93C5FD !important;
  text-decoration: underline;
}

/* ============================================
   BOOTSTRAP TEXT UTILITIES DARK MODE
   ============================================ */

[data-theme="dark"] .text-light {
  color: var(--text-primary) !important;
}

[data-theme="dark"] .text-dark {
  color: var(--text-primary) !important;
}

[data-theme="dark"] .text-muted {
  color: var(--text-secondary) !important;
}

/* ============================================
   ADDITIONAL DARK MODE ENHANCEMENTS
   ============================================ */

/* Ensure list items are visible */
[data-theme="dark"] ul li,
[data-theme="dark"] ol li {
  color: var(--text-primary);
}

[data-theme="dark"] ul li a,
[data-theme="dark"] ol li a {
  color: #60A5FA !important;
}

[data-theme="dark"] ul li a:hover,
[data-theme="dark"] ol li a:hover {
  color: #93C5FD !important;
  text-decoration: underline;
}

/* Better contrast for headings in dark mode */
[data-theme="dark"] h1,
[data-theme="dark"] h2,
[data-theme="dark"] h3,
[data-theme="dark"] h4,
[data-theme="dark"] h5,
[data-theme="dark"] h6 {
  color: var(--text-primary) !important;
}

/* Strong text visibility */
[data-theme="dark"] strong,
[data-theme="dark"] b {
  color: var(--text-primary) !important;
}

/* ============================================
   HOMEPAGE HERO BANNER DARK MODE
   ============================================ */

/* Hero section background overlay for dark mode - override inline white gradient */
[data-theme="dark"] .hero-banner,
[data-theme="dark"] .ys4a-hero-shell {
  background-image: linear-gradient(120deg, rgba(15, 23, 42, 0.95), rgba(15, 23, 42, 0.90)), url('') !important;
  position: relative;
}

/* Add background image via pseudo-element for better control */
[data-theme="dark"] .hero-banner::after,
[data-theme="dark"] .ys4a-hero-shell::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: inherit;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0.2;
  z-index: 0;
  pointer-events: none;
}

[data-theme="dark"] .hero-banner > *,
[data-theme="dark"] .ys4a-hero-shell > * {
  position: relative;
  z-index: 1;
}

/* Hero text elements - ensure visibility */
[data-theme="dark"] .ys4a-hero-shell .ys4a-badge-location {
  color: var(--text-primary) !important;
}

[data-theme="dark"] .ys4a-hero-shell .ys4a-section-title {
  color: var(--text-primary) !important;
}

[data-theme="dark"] .ys4a-hero-shell h1,
[data-theme="dark"] .ys4a-hero-shell .display-5 {
  color: var(--text-primary) !important;
}

[data-theme="dark"] .ys4a-hero-shell .lead {
  color: var(--text-secondary) !important;
}

[data-theme="dark"] .ys4a-hero-shell .text-muted {
  color: var(--text-secondary) !important;
}

[data-theme="dark"] .ys4a-hero-shell .fw-semibold {
  color: var(--text-primary) !important;
}

[data-theme="dark"] .ys4a-hero-shell .text-warning {
  color: #FBBF24 !important;
}

/* Links in hero section */
[data-theme="dark"] .ys4a-hero-shell a {
  color: #60A5FA !important;
}

[data-theme="dark"] .ys4a-hero-shell a:hover {
  color: #93C5FD !important;
}

/* ============================================
   ABOUT PAGE OBJECTIVE HIGHLIGHT DARK MODE
   ============================================ */

[data-theme="dark"] .objective-highlight {
  background: #1E293B !important;
  border-left: 4px solid #FF6600 !important;
  color: var(--text-primary) !important;
}

[data-theme="dark"] .objective-highlight p {
  color: var(--text-primary) !important;
}

[data-theme="dark"] .objective-highlight .fw-semibold {
  color: var(--text-primary) !important;
}

[data-theme="dark"] .objective-highlight strong {
  color: var(--text-primary) !important;
}

/* ============================================
   COMMUNITY PAGE (FORUM) DARK MODE
   ============================================ */

/* Bootstrap list-group dark mode */
[data-theme="dark"] .list-group {
  background-color: var(--surface) !important;
  border-color: var(--border) !important;
}

[data-theme="dark"] .list-group-item {
  background-color: var(--surface) !important;
  border-color: var(--border) !important;
  color: var(--text-primary) !important;
}

[data-theme="dark"] .list-group-item-action {
  color: var(--text-primary) !important;
}

[data-theme="dark"] .list-group-item-action:hover,
[data-theme="dark"] .list-group-item-action:focus {
  background-color: var(--surface-alt) !important;
  color: var(--text-primary) !important;
}

[data-theme="dark"] .list-group-item .text-muted {
  color: var(--text-secondary) !important;
}

[data-theme="dark"] .list-group-item .fw-semibold {
  color: var(--text-primary) !important;
}

/* Category badges in sidebar */
[data-theme="dark"] .badge.bg-secondary {
  background-color: var(--surface-alt) !important;
  color: var(--text-primary) !important;
}

[data-theme="dark"] .badge.bg-secondary.bg-opacity-50 {
  background-color: rgba(30, 41, 59, 0.8) !important;
  color: var(--text-primary) !important;
}

[data-theme="dark"] .badge.text-dark {
  color: var(--text-primary) !important;
}

[data-theme="dark"] .thread-count-badge {
  background-color: rgba(30, 41, 59, 0.8) !important;
  color: var(--text-primary) !important;
}

/* Category links */
[data-theme="dark"] .ys4a-card-surface a {
  color: #60A5FA !important;
}

[data-theme="dark"] .ys4a-card-surface a:hover {
  color: #93C5FD !important;
}

[data-theme="dark"] .ys4a-card-surface a.text-primary {
  color: #60A5FA !important;
}

[data-theme="dark"] .ys4a-card-surface a.fw-semibold {
  color: #60A5FA !important;
}

/* ============================================
   ALERTS
   ============================================ */

.alert {
  border-radius: var(--radius-default);
  border: 1px solid;
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.alert-success {
  background-color: rgba(22, 163, 74, 0.1);
  border-color: var(--status-success);
  color: var(--status-success);
}

.alert-warning {
  background-color: rgba(217, 119, 6, 0.1);
  border-color: var(--status-warning);
  color: var(--status-warning);
}

.alert-danger {
  background-color: rgba(220, 38, 38, 0.1);
  border-color: var(--status-error);
  color: var(--status-error);
}

.alert-info {
  background-color: rgba(2, 132, 199, 0.1);
  border-color: var(--status-info);
  color: var(--status-info);
}

/* ============================================
   TABS
   ============================================ */

.nav-tabs {
  border-bottom: 1px solid var(--border);
}

.nav-tabs .nav-link {
  border-radius: var(--radius-default) var(--radius-default) 0 0;
  border: 1px solid transparent;
  color: var(--text-secondary);
  padding: var(--spacing-sm) var(--spacing-md);
  transition: all var(--transition-fast);
}

.nav-tabs .nav-link:hover {
  border-color: var(--border);
  background-color: var(--bg);
}

.nav-tabs .nav-link.active {
  color: var(--brand-primary);
  background-color: var(--surface);
  border-color: var(--border) var(--border) transparent;
}

/* ============================================
   AVATARS (Only Exception - Round)
   ============================================ */

.avatar {
  border-radius: var(--radius-avatar);
  width: 40px;
  height: 40px;
  object-fit: cover;
}

.avatar-sm {
  width: 24px;
  height: 24px;
}

.avatar-lg {
  width: 64px;
  height: 64px;
}

/* ============================================
   UTILITIES
   ============================================ */

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

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

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

/* ============================================
   ACCESSIBILITY
   ============================================ */

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

*:focus-visible {
  outline: 2px solid var(--brand-secondary);
  outline-offset: 2px;
}

/* Skip link for keyboard navigation */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--brand-primary);
  color: #FFFFFF;
  padding: var(--spacing-sm);
  text-decoration: none;
  z-index: 1000;
}

.skip-link:focus {
  top: 0;
}