/* ============================================
   Chess Inform - Premium theme
   ============================================ */

/* =========================================================
   Chess Inform Design System (Light + Dark)
   - Theme controlled via: <html data-theme="light|dark">
   - No hardcoded colors in component rules (use variables)
   ========================================================= */

:root {
  /* Brand */
  --brand-primary: #1B3A6B;
  --brand-primary-hover: #142B52;
  --brand-accent: #C7922F;
  --brand-accent-hover: #A97822;

  /* Backgrounds */
  --bg-main: #F8FAFC;
  --bg-card: #FFFFFF;
  --bg-soft: #F1F5F9;

  /* Text */
  --text-main: #1E293B;
  --text-muted: #64748B;
  --text-inverse: #FFFFFF;

  /* Borders */
  --border-light: #E2E8F0;

  /* Semantic */
  --success: #15803D;
  --warning: #D97706;
  --danger: #B91C1C;
  --info: #0369A1;

  /* Charts */
  --chart-1: #1B3A6B;
  --chart-2: #C7922F;
  --chart-3: #2563EB;
  --chart-4: #10B981;
  --chart-5: #EF4444;

  /* Chessboard visuals (used by chessboard.js squares + highlights) */
  /* Classic brown/tan for clear piece visibility (black pieces on dark squares) */
  --board-light: rgb(240, 217, 181); /* #F0D9B5 warm tan */
  --board-dark: rgb(181, 136, 99);   /* #B58863 brown */
  --board-highlight: var(--brand-accent);
  --board-gold: #D4AF37;

  /* RGB helpers (for rgba() tints) */
  --brand-primary-rgb: 27, 58, 107;
  --brand-accent-rgb: 199, 146, 47;
  --text-main-rgb: 30, 41, 59;
  --danger-rgb: 185, 28, 28;
  --success-rgb: 21, 128, 61;
  --warning-rgb: 217, 119, 6;
  --info-rgb: 3, 105, 161;

  /* Motion */
  --ease-out: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-fast: 0.2s var(--ease-out);
  --transition-medium: 0.28s var(--ease-out);
  --transition-slow: 0.35s var(--ease-out);

  /* Spacing scale */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 2.5rem;
  --space-3xl: 3rem;

  /* Aliases (compat layer for existing CSS) */
  --bg-color: var(--bg-main);
  --text-color: var(--text-main);
  --card-bg: var(--bg-card);
  --accent-color: var(--brand-accent);

  --bg-page: var(--bg-main);
  --bg-card-hover: var(--bg-soft);
  --bg-sidebar: var(--bg-card);

  --text-primary: var(--text-main);
  --text-secondary: var(--text-main);

  --border-subtle: var(--border-light);

  --accent-gold: var(--brand-accent);
  --accent-amber: var(--brand-accent-hover);
  --accent-gold-light: var(--brand-accent);

  --chess-green: var(--brand-primary);
  --chess-green-hover: var(--brand-primary-hover);

  --charcoal: var(--text-main);
  --charcoal-light: var(--text-muted);

  --on-accent: var(--text-inverse);
  --on-solid: var(--text-inverse);
  --table-head-text: var(--text-main);

  /* Sidebar tokens (mapped) */
  --sidebar-link-text: rgba(var(--text-main-rgb), 0.82);
  --sidebar-link-hover-bg: rgba(var(--brand-accent-rgb), 0.12);
  --sidebar-link-hover-text: rgba(var(--text-main-rgb), 0.96);
  --sidebar-link-active-bg: var(--brand-accent);
  --sidebar-link-active-text: var(--text-main);
  --sidebar-divider: var(--border-light);
  --sidebar-group-text: rgba(var(--text-main-rgb), 0.52);
}

[data-theme="dark"] {
  --brand-primary: #2F5EA8;
  --brand-primary-hover: #1B3A6B;
  --brand-accent: #D4A93A;
  --brand-accent-hover: #E6BE5C;

  --bg-main: #111827;
  --bg-card: #0F172A;
  --bg-soft: #1F2937;

  --text-main: #F1F5F9;
  --text-muted: #94A3B8;
  --text-inverse: #0B1220;

  --border-light: #1F2937;

  --success: #22C55E;
  --warning: #F59E0B;
  --danger: #EF4444;
  --info: #38BDF8;

  --chart-1: #2F5EA8;
  --chart-2: #D4A93A;
  --chart-3: #60A5FA;
  --chart-4: #34D399;
  --chart-5: #F87171;

  /* Chessboard visuals – lighter brown/tan so black pieces remain visible */
  --board-light: rgb(232, 220, 200); /* #E8DCC8 light tan */
  --board-dark: rgb(139, 115, 85);   /* #8B7355 medium brown */
  --board-highlight: var(--brand-accent);
  --board-gold: #D4AF37;

  /* RGB helpers update */
  --brand-primary-rgb: 47, 94, 168;
  --brand-accent-rgb: 212, 169, 58;
  --text-main-rgb: 241, 245, 249;
  --danger-rgb: 239, 68, 68;
  --success-rgb: 34, 197, 94;
  --warning-rgb: 245, 158, 11;
  --info-rgb: 56, 189, 248;

  /* Aliases */
  --bg-color: var(--bg-main);
  --text-color: var(--text-main);
  --card-bg: var(--bg-card);
  --accent-color: var(--brand-accent);

  --bg-page: var(--bg-main);
  --bg-card-hover: var(--bg-soft);
  --bg-sidebar: var(--bg-card);

  --text-primary: var(--text-main);
  --text-secondary: var(--text-main);

  --border-subtle: var(--border-light);

  --accent-gold: var(--brand-accent);
  --accent-amber: var(--brand-accent-hover);

  --chess-green: var(--brand-primary);
  --chess-green-hover: var(--brand-primary-hover);

  --charcoal: var(--text-main);
  --charcoal-light: var(--text-muted);

  --on-accent: var(--text-inverse);
  --on-solid: var(--text-inverse);
  --table-head-text: var(--text-main);

  --sidebar-link-text: rgba(var(--text-main-rgb), 0.82);
  --sidebar-link-hover-bg: rgba(var(--brand-accent-rgb), 0.14);
  --sidebar-link-hover-text: rgba(var(--text-main-rgb), 0.96);
  --sidebar-link-active-bg: var(--brand-accent);
  --sidebar-link-active-text: var(--text-inverse);
  --sidebar-divider: var(--border-light);
  --sidebar-group-text: rgba(var(--text-main-rgb), 0.52);
}

/* Bootstrap variable mapping (both themes) */
[data-theme="dark"],
[data-theme="light"] {
  --bs-body-bg: var(--bg-page);
  --bs-body-color: var(--text-primary);
  --bs-border-color: var(--border-subtle);
  --bs-link-color: var(--brand-accent);
  --bs-link-hover-color: var(--brand-accent-hover);
  --bs-primary: var(--brand-primary);
  --bs-primary-rgb: var(--brand-primary-rgb);
  --bs-secondary-color: var(--text-muted);
  --bs-tertiary-color: var(--text-muted);
}

/* Base */
body {
  font-family: "Segoe UI", "Helvetica Neue", system-ui, -apple-system, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  transition: background-color 0.3s ease, color 0.3s ease;
  font-size: 1rem;
  line-height: 1.6;
  letter-spacing: 0.01em;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* =====================================================
   Utility mapping (Bootstrap helpers -> CSS variables)
   - helps eliminate "light-only" helper classes in dark mode
   ===================================================== */

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

/* Override bootstrap helper for theme correctness */
.bg-light { background-color: var(--bg-soft) !important; }
.text-dark { color: var(--text-main) !important; }
.text-muted { color: var(--text-muted) !important; }

/* Size utilities (avoid inline styles) */
.avatar-80 { width: 80px; height: 80px; }
.icon-2xl { font-size: 2.5rem; }
.icon-lg { font-size: 1.5rem; }
.progress-h10 { height: 10px; }
.progress-h6 { height: 6px; }
.avatar-72 { width: 72px; height: 72px; }
.icon-28 { font-size: 28px; }
.placeholder-box {
  height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.chart-box-140 { height: 140px; max-height: 140px; }
.max-w-100 { max-width: 100px; }
.max-w-200 { max-width: 200px; }
.max-w-280 { max-width: 280px; }
.max-w-360 { max-width: 360px; }

/* Smooth, subtle page fade-in across the app */
@keyframes appFadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.main-content {
  animation: appFadeIn 260ms var(--ease-out) both;
}

/* Smooth theme transitions (only when JS sets data-theme-anim="1") */
[data-theme-anim="1"] body,
[data-theme-anim="1"] .sidebar,
[data-theme-anim="1"] .topbar,
[data-theme-anim="1"] .card,
[data-theme-anim="1"] .table,
[data-theme-anim="1"] .form-control,
[data-theme-anim="1"] .form-select,
[data-theme-anim="1"] .dropdown-menu,
[data-theme-anim="1"] .btn {
  transition:
    background-color 220ms var(--ease-out),
    color 220ms var(--ease-out),
    border-color 220ms var(--ease-out),
    box-shadow 220ms var(--ease-out);
}

/* =====================================================
   Theme toggle switch (navbar)
   ===================================================== */
.theme-toggle {
  border: 1px solid var(--border-subtle);
  background: transparent;
  padding: 0;
  border-radius: 999px;
  width: 56px;
  height: 30px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: border-color var(--transition-medium), box-shadow var(--transition-medium);
}

.theme-toggle:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(var(--brand-accent-rgb), 0.22);
  border-color: rgba(var(--brand-accent-rgb), 0.55);
}

.theme-toggle-track {
  position: relative;
  width: 100%;
  height: 100%;
  border-radius: 999px;
  background-color: rgba(var(--text-main-rgb), 0.12);
  overflow: hidden;
}

.theme-toggle-thumb {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 24px;
  height: 24px;
  border-radius: 999px;
  background-color: var(--card-bg);
  box-shadow: 0 6px 14px rgba(0, 0, 0, 0.20);
  transition: transform 240ms var(--ease-out);
}

[data-theme="dark"] .theme-toggle-thumb {
  transform: translateX(26px);
}

.theme-toggle-icon {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.9rem;
  transition: opacity 180ms var(--ease-out);
  color: var(--text-muted);
  pointer-events: none;
}

#themeIconSun { left: 8px; opacity: 0; }
#themeIconMoon { right: 8px; opacity: 1; }

/* When DARK is active show SUN (switch-to-light hint) */
[data-theme="dark"] #themeIconSun { opacity: 1; }
[data-theme="dark"] #themeIconMoon { opacity: 0; }

/* Typography hierarchy - clear, premium */
h1, .h1 {
  font-size: 1.75rem;
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.3;
  color: var(--text-primary);
  margin-bottom: var(--space-md);
}

h2, .h2 {
  font-size: 1.375rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: var(--space-md);
}

h3, .h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

h4, h5, h6 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.page-title {
  font-size: 1.625rem;
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.35;
  margin-bottom: var(--space-2xl);
  color: var(--text-primary);
}

/* Dashboard header */
.dashboard-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-md);
  flex-wrap: wrap;
  padding-bottom: var(--space-lg);
  margin-bottom: var(--space-lg);
  border-bottom: 1px solid var(--border-subtle);
}
.dashboard-greeting {
  font-size: 0.875rem;
  color: var(--text-muted);
  font-weight: 700;
}

.activity-item {
  padding: 14px 18px;
}
.activity-item:hover {
  background-color: rgba(var(--brand-accent-rgb), 0.08);
}
.activity-list {
  position: relative;
}
.activity-list::before {
  content: "";
  position: absolute;
  left: 23px;
  top: 14px;
  bottom: 14px;
  width: 1px;
  background: rgba(var(--text-main-rgb), 0.10);
  pointer-events: none;
}
.activity-dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  margin-top: 6px;
  flex-shrink: 0;
  background: rgba(var(--text-main-rgb), 0.25);
}
.activity-dot.success { background: rgba(var(--success-rgb), 0.85); }
.activity-dot.primary { background: rgba(var(--brand-primary-rgb), 0.85); }
.activity-dot.warning { background: rgba(var(--warning-rgb), 0.85); }
.activity-dot.danger { background: rgba(var(--danger-rgb), 0.85); }

.activity-when {
  display: block;
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 700;
  margin-bottom: 2px;
}
.activity-title {
  font-weight: 800;
  color: var(--text-main);
}

.activity-link {
  color: var(--brand-primary);
  font-weight: 800;
}
.activity-link:hover {
  color: var(--brand-primary-hover);
  text-decoration: underline;
}

.quick-actions .bi {
  font-size: 18px;
  line-height: 1;
}
.quick-actions .btn-link {
  color: var(--text-muted);
  border-radius: 8px;
  padding-left: 0.5rem;
  padding-right: 0.5rem;
}
.quick-actions .btn-link:hover {
  color: var(--brand-primary);
  background-color: rgba(var(--brand-primary-rgb), 0.08);
}

/* Dashboard table upgrades */
.dashboard-table thead th {
  background-color: rgba(var(--text-main-rgb), 0.03);
}
.dashboard-table tbody td {
  padding-top: calc(var(--space-lg) + 2px);
  padding-bottom: calc(var(--space-lg) + 2px);
}
.dashboard-table tbody tr:hover {
  background-color: rgba(var(--brand-accent-rgb), 0.10);
}

/* Strategic widget: student growth bars */
.growth-row {
  display: grid;
  grid-template-columns: 42px 1fr 28px;
  gap: 10px;
  align-items: center;
  padding: 10px 0;
}
.growth-label {
  font-size: 12px;
  font-weight: 800;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.growth-val {
  font-size: 12px;
  font-weight: 900;
  color: var(--text-main);
  text-align: right;
  font-variant-numeric: tabular-nums;
}
.growth-bar {
  height: 10px;
  border-radius: 999px;
  background: rgba(var(--text-main-rgb), 0.08);
  overflow: hidden;
}
.growth-bar > span {
  display: block;
  height: 100%;
  width: 0;
  border-radius: 999px;
  background: var(--brand-primary);
}

.activity-list {
  position: relative;
}
.activity-list::before {
  content: "";
  position: absolute;
  left: 22px;
  top: 12px;
  bottom: 12px;
  width: 1px;
  background: rgba(var(--text-main-rgb), 0.10);
}
.activity-link {
  font-weight: 800;
  color: var(--brand-primary);
}
.activity-link:hover {
  color: var(--brand-primary-hover);
  text-decoration: underline;
}

.section-title {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: var(--space-lg);
}

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

/* Buttons - smooth, professional hovers */
.btn {
  transition: background-color var(--transition-medium), border-color var(--transition-medium), color var(--transition-medium), box-shadow var(--transition-fast);
}

/* Button system (design system additions) */
.btn-soft {
  background-color: var(--bg-soft);
  border-color: var(--border-light);
  color: var(--text-main);
}
.btn-soft:hover {
  background-color: rgba(var(--brand-accent-rgb), 0.12);
  border-color: rgba(var(--brand-accent-rgb), 0.28);
  color: var(--text-main);
}

.btn-danger {
  background-color: var(--danger);
  border-color: var(--danger);
  color: var(--text-inverse);
}
.btn-danger:hover {
  background-color: rgba(var(--danger-rgb), 0.90);
  border-color: rgba(var(--danger-rgb), 0.90);
}

.btn-success {
  background-color: var(--success);
  border-color: var(--success);
  color: var(--text-inverse);
}
.btn-success:hover {
  background-color: rgba(var(--success-rgb), 0.90);
  border-color: rgba(var(--success-rgb), 0.90);
}

.btn-primary {
  background-color: var(--brand-primary);
  border-color: var(--brand-primary);
  color: var(--on-accent);
}

.btn-primary:hover {
  background-color: var(--brand-primary-hover);
  border-color: var(--brand-primary-hover);
  color: var(--on-accent);
  box-shadow: 0 2px 10px rgba(var(--brand-primary-rgb), 0.18);
}

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

.btn-outline-primary:hover {
  background-color: rgba(var(--brand-primary-rgb), 0.10);
  border-color: var(--brand-primary);
  color: var(--brand-primary-hover);
}

.btn-accent {
  background-color: var(--brand-accent);
  border-color: var(--brand-accent);
  color: var(--on-accent);
}

.btn-accent:hover {
  background-color: var(--brand-accent-hover);
  border-color: var(--brand-accent-hover);
  color: var(--on-accent);
  box-shadow: 0 2px 10px rgba(var(--brand-accent-rgb), 0.22);
}

/* Cards - refined, subtle hover */
.card {
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  background-color: var(--card-bg);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.20);
  transition: border-color var(--transition-medium), box-shadow var(--transition-medium);
}

.card:hover {
  border-color: var(--border-light);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.28);
}

.card-header {
  background-color: var(--bg-card);
  border-bottom: 1px solid var(--border-subtle);
  font-weight: 600;
  font-size: 0.9375rem;
  padding: var(--space-lg) var(--space-xl);
  border-radius: 10px 10px 0 0;
}

.card-body {
  padding: var(--space-xl);
}

/* Statistic cards - no bounce, subtle lift */
.stat-card {
  border-left: 0;
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color var(--transition-medium), background-color var(--transition-medium);
}

.stat-card::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 3px;
  background: var(--brand-accent);
  opacity: 0.55;
  border-radius: 10px 10px 0 0;
}

/* Use gold only where it matters */
.stat-card.stat-accent::before {
  opacity: 0.95;
}

.stat-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.14);
  background-color: var(--bg-card-hover);
}

.stat-card .stat-value {
  font-size: 2.375rem; /* ~38px, more dominant */
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  line-height: 1.2;
}

/* Student dashboard micro-polish */
.student-dashboard .stat-title {
  font-size: 1.8rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.student-dashboard .stat-title-wrap {
  font-size: 1.35rem;
  font-weight: 700;
  white-space: normal;
  overflow: visible;
  text-overflow: clip;
  word-break: break-word;
  line-height: 1.3;
}
.student-dashboard .stat-delta {
  font-size: 12px;
  font-weight: 800;
  border-radius: 999px;
  padding: 6px 10px;
  border: 1px solid rgba(var(--brand-primary-rgb), 0.25);
  background: rgba(var(--brand-primary-rgb), 0.10);
  color: var(--text-primary);
}
.student-dashboard .stat-delta.up {
  border-color: rgba(var(--success-rgb), 0.35);
  background: rgba(var(--success-rgb), 0.14);
  color: var(--text-primary);
}
.student-dashboard .stat-delta.down {
  border-color: rgba(var(--danger-rgb), 0.35);
  background: rgba(var(--danger-rgb), 0.12);
  color: var(--text-primary);
}
.record-bar {
  height: 8px;
  border-radius: 999px;
  overflow: hidden;
  display: flex;
  background: rgba(var(--text-main-rgb), 0.12);
  border: 1px solid rgba(var(--text-main-rgb), 0.12);
}
.record-bar .seg { height: 100%; display: block; width: 0; }
.record-bar .seg.win { background: rgba(var(--success-rgb), 0.85); }
.record-bar .seg.draw { background: rgba(var(--warning-rgb), 0.75); }
.record-bar .seg.loss { background: rgba(var(--danger-rgb), 0.75); }

[data-theme="dark"] .student-dashboard .card {
  background: #0F1E3A;
  border: 1px solid rgba(255, 255, 255, 0.06);
}
[data-theme="dark"] .student-dashboard .card-header {
  background: #0F1E3A;
  border-bottom-color: rgba(255, 255, 255, 0.06);
}

.stat-card .stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 700;
  letter-spacing: 0.01em;
  margin-top: var(--space-xs);
}

.stat-card .stat-subtext {
  margin-top: 6px;
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 700;
}

.stat-card .stat-icon {
  font-size: 1.35rem;
  color: var(--text-muted);
  opacity: 0.9;
}

/* Badges - restrained, professional */
.badge {
  font-weight: 500;
  letter-spacing: 0.02em;
  padding: 0.4em 0.7em;
  border-radius: 6px;
  transition: opacity var(--transition-fast);
}

.badge:hover {
  opacity: 0.92;
}

.badge-chess {
  background-color: var(--chess-green);
  color: var(--on-accent);
}

.badge-accent {
  background-color: var(--accent-gold);
  color: var(--text-inverse);
}

.badge-rating-beginner { background-color: var(--success); color: var(--text-inverse); }
.badge-rating-intermediate { background-color: var(--warning); color: var(--text-inverse); }
.badge-rating-advanced { background-color: var(--danger); color: var(--text-inverse); }

.badge-win { background-color: var(--success); color: var(--text-inverse); }
.badge-loss { background-color: var(--danger); color: var(--text-inverse); }
.badge-draw { background-color: var(--text-muted); color: var(--text-inverse); }

/* Sidebar - premium, smooth transitions */
.sidebar {
  background-color: var(--bg-sidebar);
  height: 100vh; /* fixed sidebar: constrain to viewport */
  width: 280px;
  transition: width var(--transition-slow);
  flex-shrink: 0;
  position: fixed;
  left: 0;
  top: 0;
  z-index: 1030;
  overflow: hidden; /* let only the nav scroll */
  display: flex;
  flex-direction: column;
}

.sidebar.collapsed {
  width: 72px;
}

.sidebar .nav-link {
  color: var(--sidebar-link-text);
  padding: var(--space-sm) var(--space-md);
  border-radius: 999px;
  margin: 0 var(--space-md) 2px var(--space-md);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  font-size: 0.9375rem;
  transition: background-color var(--transition-medium), color var(--transition-medium);
}

.sidebar .nav-link:hover {
  background-color: var(--sidebar-link-hover-bg);
  color: var(--sidebar-link-hover-text);
}

.sidebar .nav-link.active {
  background-color: var(--sidebar-link-active-bg);
  color: var(--sidebar-link-active-text);
  font-weight: 700;
}

.sidebar .nav-link.active i {
  color: var(--sidebar-link-active-text);
  opacity: 1;
}

.sidebar .nav-link i {
  width: 1.25rem;
  text-align: center;
  flex-shrink: 0;
  opacity: 0.88;
}

.dashboard-kpis {
  display: grid;
  gap: 1.5rem; /* similar to g-4 */
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.dashboard-kpi {
  min-width: 0;
}

.content-spacing {
  max-width: 1320px;
  margin: 0 auto;
}

.sidebar.collapsed .nav-link span {
  display: none;
}

.sidebar .sidebar-brand {
  padding: var(--space-xl) var(--space-lg);
  border-bottom: 1px solid var(--sidebar-divider);
  min-height: 72px;
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.sidebar .sidebar-brand .brand-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
  opacity: 0.95;
}

.sidebar .sidebar-brand .brand-text {
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.sidebar-subtitle {
  font-size: 11px;
  font-weight: 500;
  opacity: 0.78;
}

.sidebar.collapsed .sidebar-brand .brand-text {
  display: none;
}

.sidebar.collapsed .sidebar-powered-by {
  display: none;
}

.sidebar .sidebar-footer {
  margin-top: auto;
  padding: var(--space-md);
  border-top: 1px solid var(--sidebar-divider);
  position: sticky;
  bottom: 0;
  background-color: var(--bg-sidebar);
}

.sidebar .sidebar-footer .btn {
  transition: background-color var(--transition-medium), color var(--transition-medium), border-color var(--transition-medium);
}

.sidebar.collapsed .sidebar-footer #sidebar-toggle-text {
  display: none;
}

.sidebar .sidebar-nav {
  flex: 1;
  min-height: 0;
  padding-top: var(--space-sm);
  overflow-y: auto;
  overflow-x: hidden;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
}

/* Mobile backdrop when sidebar is open */
.sidebar-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.35);
  z-index: 1025; /* below sidebar (1030) */
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-medium);
}

.sidebar-backdrop.show {
  opacity: 1;
  pointer-events: auto;
}

body.sidebar-open {
  overflow: hidden;
}

.sidebar .sidebar-group {
  display: block;
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--sidebar-group-text);
  padding: var(--space-md) var(--space-lg) var(--space-xs);
  margin: 0 var(--space-md);
}

.sidebar.collapsed .sidebar-group {
  display: none;
}

/* Top bar */
.topbar {
  background-color: var(--bg-card);
  border-bottom: 1px solid var(--border-subtle);
  min-height: 72px;
  padding: 0 var(--space-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.topbar .topbar-brand-avatar {
  width: 52px;
  height: 52px;
}

@media (max-width: 768px) {
  .topbar {
    min-height: 64px;
  }
  .topbar .topbar-brand-avatar {
    width: 44px;
    height: 44px;
  }
}

.topbar .academy-name {
  font-weight: 800;
  font-size: 1.18rem;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.topbar-powered-by {
  font-size: 12px;
  opacity: 0.65;
  color: var(--text-muted);
}

.topbar-subtitle {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
}

.app-avatar {
  width: 32px;
  height: 32px;
}
.app-avatar-sm {
  width: 28px;
  height: 28px;
}
.app-avatar-md {
  width: 32px;
  height: 32px;
}
.app-avatar-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* App sidebar brand logo: show only the logo (no box) */
.sidebar-brand .app-avatar {
  background: transparent !important;
  border: 0 !important;
  border-radius: 0 !important;
}
.sidebar-brand .app-avatar-img {
  object-fit: contain;
  background: transparent;
}

/* Sidebar platform branding (small + muted) */
.sidebar-brand-stack {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.sidebar-powered-by {
  font-size: 12px;
  opacity: 0.6;
  color: var(--text-muted);
  font-weight: 400;
  text-align: center;
}

.sidebar-platform-logo {
  width: 36px;
  height: 36px;
}
.sidebar-platform-logo .app-avatar-img {
  filter: grayscale(1) saturate(0);
  opacity: 0.8;
}

.topbar .user-role-badge {
  font-size: 0.6875rem;
  padding: 0.35em 0.65em;
  border-radius: 6px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.topbar .user-role-badge.role-admin { background-color: rgba(var(--text-main-rgb), 0.08); color: var(--text-main); border: 1px solid var(--border-light); }
.topbar .user-role-badge.role-coach { background-color: rgba(var(--brand-accent-rgb), 0.14); color: var(--text-main); border: 1px solid rgba(var(--brand-accent-rgb), 0.32); }
.topbar .user-role-badge.role-student { background-color: rgba(var(--brand-primary-rgb), 0.14); color: var(--text-main); border: 1px solid rgba(var(--brand-primary-rgb), 0.32); }
.topbar .user-role-badge.identity-badge { background-color: rgba(var(--text-main-rgb), 0.08); color: var(--text-main); border: 1px solid var(--border-light); }

/* Role badges (e.g. in tables) */
.badge.role-admin { background-color: var(--brand-primary); color: var(--text-inverse); }
.badge.role-coach { background-color: var(--brand-accent); color: var(--text-inverse); }
.badge.role-student { background-color: rgba(var(--brand-primary-rgb), 0.16); color: var(--text-main); border: 1px solid rgba(var(--brand-primary-rgb), 0.28); }
.badge.role-parent { background-color: rgba(var(--text-main-rgb), 0.10); color: var(--text-main); border: 1px solid var(--border-light); }
.badge.role-user { background-color: var(--border-light); color: var(--text-primary); border: 1px solid var(--border-subtle); }

.topbar .dropdown-toggle {
  transition: opacity var(--transition-fast);
}

.topbar .dropdown-toggle:hover {
  opacity: 0.85;
}

/* Main content area - generous spacing */
.main-content {
  flex: 1;
  padding: var(--space-2xl) var(--space-3xl);
  margin-left: 280px;
  transition: margin-left var(--transition-slow);
  min-height: 100vh;
}

.sidebar.collapsed ~ .main-content {
  margin-left: 72px;
}

/* Tables (design system) */
.table-custom,
.table-chess {
  --table-bg: var(--bg-card);
  --table-head-bg: var(--bg-soft);
  --table-row-hover-bg: rgba(var(--brand-accent-rgb), 0.08);
  --table-selected-border: var(--brand-accent);
}

.table-custom {
  background-color: var(--table-bg);
  border: 1px solid var(--border-light);
  border-radius: 12px;
  overflow: hidden;
}

.table-custom thead th,
.table-custom thead td,
.table-chess thead th {
  background-color: var(--table-head-bg);
  border-bottom: 1px solid var(--border-light);
  font-weight: 600;
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--table-head-text);
  padding: var(--space-md) var(--space-lg);
}

/* Ensure all table headers are readable in both themes */
.table thead th,
.table thead td {
  color: var(--table-head-text) !important;
}

.table-chess tbody td {
  padding: var(--space-lg) var(--space-lg);
  vertical-align: middle;
  font-size: 0.9375rem;
}

.table-chess tbody tr {
  transition: background-color var(--transition-medium);
}

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

.table-custom tbody tr.is-selected {
  border-left: 4px solid var(--table-selected-border);
}

/* Progress bars */
.progress {
  height: 8px;
  border-radius: 6px;
  background-color: rgba(var(--text-main-rgb), 0.12);
  overflow: hidden;
  transition: box-shadow var(--transition-fast);
}

.progress-bar {
  transition: width var(--transition-slow);
}

.progress-bar-chess {
  background-color: var(--brand-primary);
}

.progress-bar-accent {
  background-color: var(--brand-accent);
}

/* Chess board pattern (subtle, optional) */
.bg-chess-pattern {
  background-image:
    linear-gradient(45deg, var(--bg-page) 25%, transparent 25%),
    linear-gradient(-45deg, var(--bg-page) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, var(--bg-page) 75%),
    linear-gradient(-45deg, transparent 75%, var(--bg-page) 75%);
  background-size: 20px 20px;
  background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
  background-color: var(--bg-soft);
  opacity: 0.5;
}

/* Icons - action buttons, smooth hover */
.action-icon {
  width: 2.25rem;
  height: 2.25rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  transition: background-color var(--transition-medium), color var(--transition-medium);
}

.action-icon:hover {
  background-color: rgba(var(--brand-accent-rgb), 0.12);
  color: var(--brand-accent);
}

/* Chessboard.js square colors + highlights (moved from inline page styles) */
.white-1e1d7 { background-color: var(--board-light) !important; }
.black-3c85d { background-color: var(--board-dark) !important; }
.bg-purple { background-color: var(--board-highlight) !important; color: var(--text-inverse) !important; }

/* Premium feedback overlays (brand-aligned) */
.square-55d63 { position: relative; }
.square-55d63::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: transparent;
  transition: background-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}
.square-55d63:hover::after {
  background: rgba(var(--brand-primary-rgb), 0.06);
}
.square-55d63.ci-sel::after {
  background: rgba(var(--brand-primary-rgb), 0.18);
  box-shadow: inset 0 0 0 2px rgba(var(--brand-primary-rgb), 0.35);
}
.square-55d63.ci-last::after {
  background: rgba(212, 175, 55, 0.14);
  box-shadow: inset 0 0 0 2px rgba(212, 175, 55, 0.62);
}
.square-55d63.ci-correct::after {
  background: rgba(var(--brand-accent-rgb), 0.24);
  box-shadow:
    inset 0 0 0 2px rgba(var(--brand-accent-rgb), 0.72),
    0 0 18px rgba(var(--brand-accent-rgb), 0.32);
  animation: ciPulseGold 650ms var(--ease-out) both;
}
.square-55d63.ci-wrong::after {
  background: rgba(var(--danger-rgb), 0.18);
  box-shadow:
    inset 0 0 0 2px rgba(var(--danger-rgb), 0.60),
    0 0 18px rgba(var(--danger-rgb), 0.24);
  animation: ciPulseRed 520ms var(--ease-out) both;
}
@keyframes ciPulseGold {
  0% { transform: scale(1); }
  45% { transform: scale(1.02); }
  100% { transform: scale(1); }
}
@keyframes ciPulseRed {
  0% { transform: scale(1); }
  40% { transform: scale(1.015); }
  100% { transform: scale(1); }
}

/* Reusable sizing helpers to avoid inline styles */
.game-board {
  width: 520px;
  max-width: 100%;
  min-height: 320px;
  display: block;
}

.puzzle-board {
  width: 420px;
  max-width: 100%;
  display: block;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 18px 46px rgba(var(--brand-primary-rgb), 0.18);
}

.game-board {
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 18px 46px rgba(var(--brand-primary-rgb), 0.18);
}

.turn-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid rgba(var(--text-main-rgb), 0.16);
  background: transparent;
  color: var(--text-primary);
  font-weight: 800;
  letter-spacing: -0.01em;
}
.turn-dot {
  width: 12px;
  height: 12px;
  border-radius: 999px;
  display: inline-block;
  box-shadow: 0 0 0 2px rgba(var(--text-main-rgb), 0.10) inset;
}
.turn-badge.turn-white {
  background: var(--board-light);
  border-color: rgba(var(--brand-primary-rgb), 0.18);
  color: var(--board-dark);
}
.turn-badge.turn-white .turn-dot {
  background: #FFFFFF;
  border: 1px solid rgba(var(--board-dark), 0.20);
}
.turn-badge.turn-black {
  background: var(--board-dark);
  border-color: rgba(212, 175, 55, 0.50);
  color: var(--text-inverse);
}
.turn-badge.turn-black .turn-dot {
  background: #1C1C1C;
  border: 1px solid rgba(var(--text-inverse-rgb), 0.22);
}
.puzzle-turn-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

/* Reduce coordinate visual noise */
.notation-322f9 {
  opacity: 0.24;
  font-weight: 600;
}
[data-theme="dark"] .notation-322f9 {
  opacity: 0.34;
}

.chart-box-sm { height: 180px; }
.chart-box-240 { height: 240px; }

/* Student Ratings page */
.ratings-cards .rating-card {
  text-decoration: none;
  color: inherit;
  border: 1px solid rgba(var(--text-main-rgb), 0.10);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}
.ratings-cards .rating-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 46px rgba(var(--brand-primary-rgb), 0.18);
  border-color: rgba(var(--brand-primary-rgb), 0.22);
}
.ratings-cards .rating-card.active {
  border-color: rgba(var(--brand-accent-rgb), 0.55);
  box-shadow: 0 18px 46px rgba(var(--brand-primary-rgb), 0.20);
}
.rating-main {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 6px;
}
.rating-val {
  font-size: 2.1rem;
  font-weight: 900;
  letter-spacing: -0.03em;
}
.rating-delta {
  font-size: 12px;
  font-weight: 900;
  border-radius: 999px;
  padding: 6px 10px;
  border: 1px solid rgba(var(--text-main-rgb), 0.12);
  background: rgba(var(--text-main-rgb), 0.06);
  color: var(--text-muted);
}
.rating-delta.pos { border-color: rgba(var(--success-rgb), 0.35); background: rgba(var(--success-rgb), 0.14); color: var(--text-primary); }
.rating-delta.neg { border-color: rgba(var(--danger-rgb), 0.35); background: rgba(var(--danger-rgb), 0.12); color: var(--text-primary); }
.rating-delta.neu { opacity: 0.85; }
.rating-meta {
  margin-top: 10px;
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  font-size: 13px;
}
.spark {
  margin-top: 10px;
  height: 28px;
  color: rgba(var(--brand-primary-rgb), 0.85);
}
.spark-svg { width: 100%; height: 28px; }
.insight-kpi {
  border: 1px solid rgba(var(--text-main-rgb), 0.10);
  border-radius: 12px;
  padding: 12px;
  background: rgba(var(--text-main-rgb), 0.03);
}

.moves-list {
  max-height: 420px;
  overflow: auto;
}

.pgn-pre {
  white-space: pre-wrap;
}

/* Game viewer move list helpers (avoid inline styles) */
.badge-mini {
  font-size: 10px;
}
.eval-mini {
  font-size: 11px;
}
.move-cell {
  min-width: 48px;
}
.eval-cell {
  min-width: 44px;
  font-variant-numeric: tabular-nums;
}

/* Lichess-like advantage bar (Game Viewer) */
.eval-bar {
  --whitePct: 50;
  position: relative;
  width: 16px;
  min-width: 16px;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid rgba(var(--text-main-rgb), 0.18);
  background: rgba(var(--text-main-rgb), 0.92);
}
.eval-bar-black {
  position: absolute;
  inset: 0;
  background: rgba(var(--text-main-rgb), 0.86);
}
.eval-bar-white {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: calc(var(--whitePct) * 1%);
  background: var(--text-inverse);
}
.eval-bar-marker {
  position: absolute;
  left: -4px;
  right: -4px;
  height: 2px;
  top: calc((100 - var(--whitePct)) * 1%);
  background: var(--brand-primary);
  opacity: 0.9;
}
.eval-bar-label {
  position: absolute;
  left: 22px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 11px;
  color: var(--text-muted);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

/* Timetable / sessions list */
.session-item {
  border-left: 3px solid var(--brand-primary);
  padding-left: var(--space-lg);
  margin-bottom: var(--space-lg);
  padding-top: var(--space-xs);
  padding-bottom: var(--space-xs);
  transition: border-color var(--transition-fast), opacity var(--transition-fast);
}

.session-item:last-child {
  margin-bottom: 0;
}

.session-item.time-past {
  border-left-color: var(--border-light);
  opacity: 0.75;
}

/* Spacing utilities */
.content-spacing > * + * {
  margin-top: var(--space-2xl);
}

/* Form controls - premium feel */
.form-control, .form-select {
  border-radius: 8px;
  border-color: var(--border-subtle);
  padding: 0.6rem 0.875rem;
  transition: border-color var(--transition-medium), box-shadow var(--transition-fast);
}

.form-control:focus, .form-select:focus {
  border-color: var(--brand-accent);
  box-shadow: 0 0 0 3px rgba(var(--brand-accent-rgb), 0.22);
}

/* Lesson plan forms: never inherit global disables (no pointer-events: none, no opacity overlay, no fieldset disabled) */
.lesson-plan-add-form,
.lesson-plan-add-form input:not([type="hidden"]):not([type="submit"]),
.lesson-plan-add-form textarea,
.lesson-plan-edit-form,
.lesson-plan-edit-form input:not([type="hidden"]):not([type="submit"]),
.lesson-plan-edit-form textarea {
  pointer-events: auto;
  opacity: 1;
}
.lesson-plan-add-form fieldset,
.lesson-plan-edit-form fieldset {
  border: none;
  margin: 0;
  padding: 0;
  min-width: 0;
}
.lesson-plan-add-form fieldset:not([disabled]),
.lesson-plan-edit-form fieldset:not([disabled]) {
  pointer-events: auto;
}

/* Lesson Plan modal: ensure inputs are never blocked by overlays or inherited pointer-events */
.modal .modal-dialog,
.modal .modal-content,
.modal .modal-body,
.modal .lesson-plan-edit-form,
.modal .lesson-plan-edit-form input,
.modal .lesson-plan-edit-form textarea,
.modal .lesson-plan-edit-form select,
.modal .lesson-plan-edit-form button {
  pointer-events: auto;
}
.modal .modal-content {
  position: relative;
  z-index: 1;
}

/* Hard z-index fix for admin-template modal stacking / focus trap conflicts */
.modal {
  z-index: 2000 !important;
}
.modal-backdrop {
  z-index: 1990 !important;
}

/* Alerts (design system) */
.alert {
  border-radius: 12px;
  border: 1px solid var(--border-light);
  padding: 0.85rem 1rem;
}

.alert-success {
  border-left: 4px solid var(--success);
  background-color: rgba(var(--success-rgb), 0.10);
  color: var(--text-main);
}
.alert-warning {
  border-left: 4px solid var(--warning);
  background-color: rgba(var(--warning-rgb), 0.12);
  color: var(--text-main);
}
.alert-danger {
  border-left: 4px solid var(--danger);
  background-color: rgba(var(--danger-rgb), 0.10);
  color: var(--text-main);
}
.alert-info {
  border-left: 4px solid var(--info);
  background-color: rgba(var(--info-rgb), 0.10);
  color: var(--text-main);
}

/* Badge system (design system) */
.badge {
  border-radius: 999px;
  padding: 0.4em 0.75em;
  font-weight: 600;
}
.badge-primary { background-color: rgba(var(--brand-primary-rgb), 0.12); color: var(--text-main); border: 1px solid rgba(var(--brand-primary-rgb), 0.22); }
.badge-accent { background-color: rgba(var(--brand-accent-rgb), 0.14); color: var(--text-main); border: 1px solid rgba(var(--brand-accent-rgb), 0.28); }
.badge-success { background-color: rgba(var(--success-rgb), 0.14); color: var(--text-main); border: 1px solid rgba(var(--success-rgb), 0.26); }
.badge-warning { background-color: rgba(var(--warning-rgb), 0.14); color: var(--text-main); border: 1px solid rgba(var(--warning-rgb), 0.26); }
.badge-danger { background-color: rgba(var(--danger-rgb), 0.14); color: var(--text-main); border: 1px solid rgba(var(--danger-rgb), 0.26); }
.badge-info { background-color: rgba(var(--info-rgb), 0.14); color: var(--text-main); border: 1px solid rgba(var(--info-rgb), 0.26); }

/* Status indicator */
.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  display: inline-block;
  background-color: var(--text-muted);
}
.status-dot.success { background-color: var(--success); }
.status-dot.warning { background-color: var(--warning); }
.status-dot.danger { background-color: var(--danger); }
.status-dot.info { background-color: var(--info); }

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

/* List groups - spacing */
.list-group-item {
  padding: var(--space-lg) var(--space-xl);
  border-color: var(--border-subtle);
  transition: background-color var(--transition-fast);
}

.dropdown-menu {
  border-radius: 10px;
  border: 1px solid var(--border-subtle);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
  padding: var(--space-sm);
}

.dropdown-item {
  border-radius: 6px;
  padding: var(--space-md) var(--space-lg);
  transition: background-color var(--transition-fast);
}

/* Auth pages - premium spacing and typography */
.auth-page {
  background-color: var(--bg-page);
}

.auth-card {
  width: 100%;
  max-width: 420px;
  border-radius: 14px;
  border: 1px solid var(--border-subtle);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06), 0 2px 8px rgba(0, 0, 0, 0.04);
}

.auth-card-body {
  padding: 2rem 2.25rem;
}
@media (min-width: 576px) {
  .auth-card-body {
    padding: 2.5rem 2.75rem;
  }
}

.auth-header {
  margin-bottom: 2rem;
}

.auth-subtitle {
  font-size: 0.9375rem;
  line-height: 1.4;
  max-width: 320px;
  margin-left: auto;
  margin-right: auto;
}

.auth-role-hint {
  font-size: 0.8125rem;
  margin-top: 0.25rem;
}

.auth-logo {
  font-size: 2.5rem;
  line-height: 1;
  color: var(--brand-primary);
}

.auth-logo-img {
  width: 200px;
  height: 200px;
  object-fit: contain;
  background: transparent;
}

@media (max-width: 980px) {
  .auth-logo-img {
    width: 140px;
    height: 140px;
  }
}

@media (max-width: 560px) {
  .auth-logo-img {
    width: 112px;
    height: 112px;
  }
}

.auth-title {
  letter-spacing: -0.03em;
}

.auth-field {
  margin-bottom: 1.25rem;
}

.auth-form .form-control {
  padding: 0.75rem 1rem;
  font-size: 1rem;
}

.auth-forgot-wrap {
  margin-top: 0.375rem;
  text-align: right;
}

.auth-forgot-link {
  color: var(--brand-accent) !important;
  text-decoration: none;
  transition: opacity var(--transition-fast);
}
.auth-forgot-link:hover {
  opacity: 0.9;
  text-decoration: underline;
}

.auth-form .auth-btn-login {
  height: 52px;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: 10px;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast);
}
.auth-form .auth-btn-login:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(var(--brand-primary-rgb), 0.35);
}
.auth-form .auth-btn-login:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(var(--brand-primary-rgb), 0.25);
}

.auth-trust {
  font-size: 0.8125rem;
  line-height: 1.4;
}

.auth-link {
  color: var(--brand-accent) !important;
  transition: opacity var(--transition-fast);
}

.auth-link:hover {
  opacity: 0.85;
}

/* Register page - role cards and layout */
.register-card {
  width: 100%;
  max-width: 640px;
  border-radius: 12px;
  border: 1px solid var(--border-subtle);
}

.register-header {
  margin-bottom: 1.5rem;
}

.register-logo {
  width: 120px;
  height: 120px;
  object-fit: contain;
}

@media (min-width: 768px) {
  .register-logo {
    width: 140px;
    height: 140px;
  }
}

.register-title {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text-main);
}

@media (min-width: 768px) {
  .register-title {
    font-size: 2rem;
  }
}

.role-cards .role-card {
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
  border-color: var(--border-light);
}

.role-cards .role-card:hover {
  border-color: var(--brand-primary);
  box-shadow: 0 4px 12px rgba(var(--brand-primary-rgb), 0.12);
}

.role-cards .role-card-selected {
  border-color: var(--brand-primary) !important;
  background-color: rgba(var(--brand-primary-rgb), 0.06);
  box-shadow: 0 4px 14px rgba(var(--brand-primary-rgb), 0.18);
}

.role-cards .role-icon {
  font-size: 2rem;
  color: var(--brand-primary);
}

.role-cards .role-card-selected .role-icon {
  color: var(--brand-primary);
}

.cursor-pointer {
  cursor: pointer;
}

.register-submit {
  font-weight: 600;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.register-submit:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(var(--brand-primary-rgb), 0.25);
}

.register-submit:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.password-strength .progress {
  height: 6px;
  background-color: var(--bg-soft);
  border-radius: 4px;
}

.password-strength-bar .progress-bar {
  border-radius: 4px;
  transition: width 0.2s ease;
}

/* User profile page - photo size */
.user-profile-photo {
  width: 120px;
  height: 120px;
}

/* Responsive */
@media (max-width: 991.98px) {
  .sidebar {
    width: 72px;
  }

  .sidebar .nav-link span {
    display: none;
  }

  .sidebar .sidebar-brand .brand-text {
    display: none;
  }

  .main-content {
    margin-left: 72px;
    padding: var(--space-xl) var(--space-lg);
  }
}

@media (max-width: 575.98px) {
  .main-content {
    padding: var(--space-lg) var(--space-md);
    margin-left: 0;
  }

  .topbar {
    padding: 0 var(--space-lg);
  }

  .sidebar {
    width: 280px;
    transform: translateX(-100%);
    transition: transform var(--transition-slow);
  }

  .sidebar.show {
    transform: translateX(0);
  }
}

/* ============================================
   Tournament Organizer Dashboard
   ============================================ */
.tournaments-manage-page .page-header {
  margin-bottom: var(--space-xs);
}

.tournaments-manage-page .btn-action-primary {
  padding: 0.5rem 1.25rem;
  font-weight: 600;
}
.tournaments-manage-page .btn-action-secondary {
  padding: 0.5rem 1rem;
}

/* Stat cards row */
.tournaments-manage-stats .stat-card {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-lg);
  border-radius: 10px;
  border: 1px solid var(--border-subtle);
  background-color: var(--bg-card);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
  min-height: 88px;
  transition: box-shadow var(--transition-fast), border-color var(--transition-fast);
}
.tournaments-manage-stats .stat-card::before {
  display: none;
}
.tournaments-manage-stats .stat-card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  border-color: var(--border-light);
}
.tournaments-manage-stats .stat-card-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  flex-shrink: 0;
}
.tournaments-manage-stats .stat-card-icon-primary { background: rgba(var(--brand-primary-rgb), 0.12); color: var(--brand-primary); }
.tournaments-manage-stats .stat-card-icon-success { background: rgba(var(--success-rgb), 0.14); color: var(--success); }
.tournaments-manage-stats .stat-card-icon-info { background: rgba(var(--info-rgb), 0.14); color: var(--info); }
.tournaments-manage-stats .stat-card-icon-accent { background: rgba(var(--brand-accent-rgb), 0.18); color: var(--brand-accent-hover); }
.tournaments-manage-stats .stat-card-body {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}
.tournaments-manage-stats .stat-card-value {
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-main);
  letter-spacing: -0.02em;
}
.tournaments-manage-stats .stat-card-label {
  font-size: 0.8125rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* Empty state */
.tournaments-manage-empty .empty-state-card {
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  border: 1px solid var(--border-subtle);
}
.tournaments-manage-empty .empty-state-icon {
  width: 72px;
  height: 72px;
  margin-left: auto;
  margin-right: auto;
  border-radius: 50%;
  background: rgba(var(--brand-accent-rgb), 0.15);
  color: var(--brand-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
}
.tournaments-manage-empty .empty-state-headline {
  color: var(--text-main);
  font-weight: 700;
}
.tournaments-manage-empty .empty-state-text {
  max-width: 360px;
  line-height: 1.5;
}

/* Filters */
.tournaments-manage-filters .card-body {
  padding-top: var(--space-md);
  padding-bottom: var(--space-md);
}
.tournaments-manage-filters #tournament-search {
  max-width: 280px;
}
@media (max-width: 767.98px) {
  .tournaments-manage-filters #tournament-search {
    max-width: none;
  }
}

/* Table */
.tournaments-manage-table-card {
  overflow: hidden;
  border-radius: 10px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}
.tournaments-manage-table-card .card-body {
  padding: 0;
}
.table-organizer {
  margin-bottom: 0;
}
.table-organizer thead th {
  background: var(--bg-soft);
  font-weight: 600;
  font-size: 0.8125rem;
  color: var(--text-main);
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--border-subtle);
  white-space: nowrap;
}
.table-organizer tbody td {
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--border-subtle);
  vertical-align: middle;
}
.table-organizer tbody tr:nth-child(even) {
  background-color: rgba(var(--text-main-rgb), 0.02);
}
.table-organizer tbody tr:hover {
  background-color: var(--bg-soft);
}
.table-organizer tbody tr:last-child td {
  border-bottom: 0;
}
.table-organizer .btn-sm {
  padding: 0.35rem 0.65rem;
  font-size: 0.8125rem;
}

/* Status badges */
.badge-draft {
  background-color: rgba(var(--text-main-rgb), 0.12);
  color: var(--text-muted);
  font-weight: 500;
  padding: 0.35em 0.65em;
  border-radius: 6px;
  font-size: 0.75rem;
}
.badge-published {
  background-color: rgba(var(--success-rgb), 0.14);
  color: var(--success);
  font-weight: 500;
  padding: 0.35em 0.65em;
  border-radius: 6px;
  font-size: 0.75rem;
}
.badge-ongoing {
  background-color: rgba(var(--info-rgb), 0.14);
  color: var(--info);
  font-weight: 500;
  padding: 0.35em 0.65em;
  border-radius: 6px;
  font-size: 0.75rem;
}
.badge-finished {
  background-color: rgba(var(--text-main-rgb), 0.18);
  color: var(--text-main);
  font-weight: 500;
  padding: 0.35em 0.65em;
  border-radius: 6px;
  font-size: 0.75rem;
}

[data-theme="dark"] .badge-draft {
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--text-muted);
}
[data-theme="dark"] .badge-finished {
  background-color: rgba(255, 255, 255, 0.12);
  color: var(--text-inverse);
}

/* ============================================
   Tournament Player Dashboard (My Registrations)
   ============================================ */
.tournament-dashboard-page .page-header {
  margin-bottom: var(--space-xs);
}
.tournament-dashboard-page .btn-action-primary {
  padding: 0.5rem 1.25rem;
  font-weight: 600;
}

.tournament-dashboard-stats .stat-card {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-lg);
  border-radius: 10px;
  border: 1px solid var(--border-subtle);
  background-color: var(--bg-card);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
  min-height: 88px;
  transition: box-shadow var(--transition-fast), border-color var(--transition-fast);
}
.tournament-dashboard-stats .stat-card::before {
  display: none;
}
.tournament-dashboard-stats .stat-card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  border-color: var(--border-light);
}
.tournament-dashboard-stats .stat-card-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  flex-shrink: 0;
}
.tournament-dashboard-stats .stat-card-icon-primary { background: rgba(var(--brand-primary-rgb), 0.12); color: var(--brand-primary); }
.tournament-dashboard-stats .stat-card-icon-success { background: rgba(var(--success-rgb), 0.14); color: var(--success); }
.tournament-dashboard-stats .stat-card-icon-info { background: rgba(var(--info-rgb), 0.14); color: var(--info); }
.tournament-dashboard-stats .stat-card-icon-accent { background: rgba(var(--brand-accent-rgb), 0.18); color: var(--brand-accent-hover); }
.tournament-dashboard-stats .stat-card-body {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}
.tournament-dashboard-stats .stat-card-value {
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-main);
  letter-spacing: -0.02em;
}
.tournament-dashboard-stats .stat-card-label {
  font-size: 0.8125rem;
  color: var(--text-muted);
  font-weight: 500;
}

.tournament-dashboard-empty .empty-state-card {
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  border: 1px solid var(--border-subtle);
}
.tournament-dashboard-empty .empty-state-icon {
  width: 72px;
  height: 72px;
  margin-left: auto;
  margin-right: auto;
  border-radius: 50%;
  background: rgba(var(--brand-accent-rgb), 0.15);
  color: var(--brand-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
}
.tournament-dashboard-empty .empty-state-headline {
  color: var(--text-main);
  font-weight: 700;
}
.tournament-dashboard-empty .empty-state-text {
  max-width: 360px;
  line-height: 1.5;
}

.tournament-dashboard-filters .card-body {
  padding-top: var(--space-md);
  padding-bottom: var(--space-md);
}
.tournament-dashboard-filters #registration-search {
  max-width: 280px;
}
@media (max-width: 767.98px) {
  .tournament-dashboard-filters #registration-search {
    max-width: none;
  }
}

.tournament-dashboard-table-card {
  overflow: hidden;
  border-radius: 10px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}
.tournament-dashboard-table-card .card-body {
  padding: 0;
}
.table-player-registrations {
  margin-bottom: 0;
}
.table-player-registrations thead th {
  background: var(--bg-soft);
  font-weight: 600;
  font-size: 0.8125rem;
  color: var(--text-main);
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--border-subtle);
  white-space: nowrap;
}
.table-player-registrations tbody td {
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--border-subtle);
  vertical-align: middle;
}
.table-player-registrations tbody tr:nth-child(even) {
  background-color: rgba(var(--text-main-rgb), 0.02);
}
.table-player-registrations tbody tr:hover {
  background-color: var(--bg-soft);
}
.table-player-registrations tbody tr:last-child td {
  border-bottom: 0;
}
.table-player-registrations .btn-sm {
  padding: 0.35rem 0.65rem;
  font-size: 0.8125rem;
}

/* Player dashboard status badges */
.badge-status-pending {
  background-color: rgba(var(--warning-rgb), 0.18);
  color: var(--warning);
  font-weight: 500;
  padding: 0.35em 0.65em;
  border-radius: 6px;
  font-size: 0.75rem;
}
.badge-status-confirmed {
  background-color: rgba(var(--success-rgb), 0.14);
  color: var(--success);
  font-weight: 500;
  padding: 0.35em 0.65em;
  border-radius: 6px;
  font-size: 0.75rem;
}
.badge-status-completed {
  background-color: rgba(var(--info-rgb), 0.14);
  color: var(--info);
  font-weight: 500;
  padding: 0.35em 0.65em;
  border-radius: 6px;
  font-size: 0.75rem;
}
.badge-status-cancelled {
  background-color: rgba(var(--danger-rgb), 0.14);
  color: var(--danger);
  font-weight: 500;
  padding: 0.35em 0.65em;
  border-radius: 6px;
  font-size: 0.75rem;
}

/* ============================================
   Sidebar UX polish (stronger active, hover, icon)
   ============================================ */
.sidebar .nav-link {
  transition: background-color var(--transition-medium), color var(--transition-medium), transform var(--transition-fast);
}
.sidebar .nav-link:hover {
  border-radius: 10px;
}
.sidebar .nav-link.active {
  border-radius: 10px;
  box-shadow: 0 2px 8px rgba(var(--brand-accent-rgb), 0.25);
}
.sidebar .nav-link.active i {
  opacity: 1;
}
.sidebar .nav-link i {
  transition: opacity var(--transition-fast);
}
.sidebar .nav-link:hover i {
  opacity: 1;
}
