/* ═══════════════════════════════════════════════════════════════════════════
   LearnKusto — Premium Design System
   Loaded AFTER Bootstrap 5.3 to override defaults.
   Dark-mode-first. Light mode via [data-bs-theme="light"].
   ═══════════════════════════════════════════════════════════════════════════ */

/* ── Fonts ─────────────────────────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

/* ── Design Tokens ─────────────────────────────────────────────────────── */
:root {
  /* surfaces */
  --lk-bg-base:        #0a0f1a;
  --lk-bg-card:        rgba(17, 24, 39, 0.85);
  --lk-bg-elevated:    rgba(30, 41, 59, 0.7);
  --lk-bg-sidebar:     #070b14;
  --lk-bg-input:       rgba(15, 23, 42, 0.8);

  /* accent gradient */
  --lk-accent-1:       #06b6d4;   /* cyan-500  */
  --lk-accent-2:       #3b82f6;   /* blue-500  */
  --lk-accent-gradient: linear-gradient(135deg, var(--lk-accent-1), var(--lk-accent-2));

  /* status */
  --lk-success:        #10b981;
  --lk-warning:        #f59e0b;
  --lk-danger:         #ef4444;
  --lk-info:           #06b6d4;

  /* text */
  --lk-text-primary:   #f1f5f9;
  --lk-text-secondary: #94a3b8;
  --lk-text-muted:     #64748b;

  /* borders & shadows */
  --lk-border:         rgba(148, 163, 184, 0.1);
  --lk-border-hover:   rgba(6, 182, 212, 0.25);
  --lk-shadow-sm:      0 1px 3px rgba(0, 0, 0, 0.3);
  --lk-shadow-md:      0 4px 14px rgba(0, 0, 0, 0.35);
  --lk-shadow-lg:      0 8px 30px rgba(0, 0, 0, 0.4);
  --lk-shadow-glow:    0 0 20px rgba(6, 182, 212, 0.08);
  --lk-shadow-glow-md: 0 0 30px rgba(6, 182, 212, 0.12);

  /* radii */
  --lk-radius-sm:  6px;
  --lk-radius-md:  10px;
  --lk-radius-lg:  14px;
  --lk-radius-xl:  20px;

  /* transitions */
  --lk-ease:       cubic-bezier(0.4, 0, 0.2, 1);
  --lk-duration:   0.3s;

  /* typography */
  --lk-font-body:  'Inter', system-ui, -apple-system, sans-serif;
  --lk-font-mono:  'JetBrains Mono', 'Cascadia Code', 'Fira Code', monospace;
}

/* Light-mode overrides */
[data-bs-theme="light"] {
  --lk-bg-base:        #f8fafc;
  --lk-bg-card:        rgba(255, 255, 255, 0.9);
  --lk-bg-elevated:    rgba(241, 245, 249, 0.9);
  --lk-bg-sidebar:     #ffffff;
  --lk-bg-input:       rgba(241, 245, 249, 0.8);
  --lk-text-primary:   #0f172a;
  --lk-text-secondary: #334155;
  --lk-text-muted:     #64748b;
  --lk-border:         rgba(15, 23, 42, 0.08);
  --lk-border-hover:   rgba(59, 130, 246, 0.25);
  --lk-shadow-sm:      0 1px 3px rgba(0, 0, 0, 0.06);
  --lk-shadow-md:      0 4px 14px rgba(0, 0, 0, 0.08);
  --lk-shadow-lg:      0 8px 30px rgba(0, 0, 0, 0.1);
  --lk-shadow-glow:    0 0 20px rgba(59, 130, 246, 0.06);
  --lk-shadow-glow-md: 0 0 30px rgba(59, 130, 246, 0.1);
}


/* ── Base Reset & Typography ───────────────────────────────────────────── */
body {
  font-family: var(--lk-font-body) !important;
  background: var(--lk-bg-base) !important;
  color: var(--lk-text-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6, .h1, .h2, .h3, .h4, .h5, .h6 {
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--lk-text-primary);
}

h1, .h1 { font-weight: 700; }
h2, .h2 { font-weight: 600; }

small, .small, .text-muted { color: var(--lk-text-muted) !important; }
.text-body-secondary { color: var(--lk-text-secondary) !important; }
.text-body-tertiary  { color: var(--lk-text-muted) !important; }
.text-secondary      { color: var(--lk-text-secondary) !important; }
.text-primary:not(.badge):not(.alert):not(.bg-primary) { color: var(--lk-accent-1) !important; }

code, pre, .flag-input {
  font-family: var(--lk-font-mono) !important;
}


/* ── Cards ─────────────────────────────────────────────────────────────── */
.card {
  background: var(--lk-bg-card) !important;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--lk-border) !important;
  border-radius: var(--lk-radius-lg) !important;
  box-shadow: var(--lk-shadow-sm);
  transition: box-shadow var(--lk-duration) var(--lk-ease),
              border-color var(--lk-duration) var(--lk-ease),
              transform var(--lk-duration) var(--lk-ease);
}

.card:hover {
  box-shadow: var(--lk-shadow-md), var(--lk-shadow-glow);
  border-color: var(--lk-border-hover) !important;
}

.card-header {
  background: transparent !important;
  border-bottom: 1px solid var(--lk-border) !important;
  padding: 1.1rem 1.5rem;
}

.card-body { padding: 1.5rem; }

.card-footer {
  background: transparent !important;
  border-top: 1px solid var(--lk-border) !important;
  padding: 1rem 1.5rem;
}

/* Lift-on-hover cards (opt-in) */
.card-lift:hover {
  transform: translateY(-3px);
  box-shadow: var(--lk-shadow-lg), var(--lk-shadow-glow-md);
}

/* Suppress hover glow on cards that wrap tables or static content */
.card:has(.table):hover,
.card:has(.card-body.p-0):hover {
  box-shadow: var(--lk-shadow-sm);
  border-color: var(--lk-border) !important;
  transform: none;
}


/* ── KPI / Stat Cards ──────────────────────────────────────────────────── */
.kpi-card {
  position: relative;
  overflow: hidden;
}

.kpi-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--lk-accent-gradient);
  border-radius: var(--lk-radius-lg) var(--lk-radius-lg) 0 0;
}

.kpi-value {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  background: var(--lk-accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.kpi-label {
  font-size: 0.8rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--lk-text-muted);
  margin-top: 0.25rem;
}

.kpi-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--lk-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  background: var(--lk-bg-elevated);
  color: var(--lk-accent-1);
  box-shadow: 0 0 15px rgba(6, 182, 212, 0.1);
}

.kpi-icon--success { color: var(--lk-success); box-shadow: 0 0 15px rgba(16, 185, 129, 0.1); }
.kpi-icon--warning { color: var(--lk-warning); box-shadow: 0 0 15px rgba(245, 158, 11, 0.1); }
.kpi-icon--danger  { color: var(--lk-danger);  box-shadow: 0 0 15px rgba(239, 68, 68, 0.1); }
.kpi-icon--info    { color: var(--lk-info);    box-shadow: 0 0 15px rgba(6, 182, 212, 0.1); }


/* ── Buttons ───────────────────────────────────────────────────────────── */
.btn {
  font-weight: 500;
  border-radius: var(--lk-radius-sm) !important;
  padding: 0.55rem 1.25rem;
  transition: all var(--lk-duration) var(--lk-ease);
  letter-spacing: 0.01em;
}

.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0) scale(0.98); }

.btn-primary {
  background: var(--lk-accent-gradient) !important;
  border: none !important;
  box-shadow: 0 2px 10px rgba(6, 182, 212, 0.2);
}
.btn-primary:hover {
  box-shadow: 0 4px 20px rgba(6, 182, 212, 0.35) !important;
}

.btn-outline-primary {
  border-color: var(--lk-accent-1) !important;
  color: var(--lk-accent-1) !important;
}
.btn-outline-primary:hover {
  background: rgba(6, 182, 212, 0.1) !important;
  box-shadow: 0 0 15px rgba(6, 182, 212, 0.15);
}

.btn-outline-secondary {
  border-color: var(--lk-border) !important;
}
.btn-outline-secondary:hover {
  background: var(--lk-bg-elevated) !important;
}

/* Pill buttons (CTF filters, tags) */
.btn-pill {
  border-radius: 50px !important;
  padding: 0.4rem 1.1rem;
  font-size: 0.85rem;
}


/* ── Form Controls ─────────────────────────────────────────────────────── */
.form-control, .form-select {
  background: var(--lk-bg-input) !important;
  border: 1px solid var(--lk-border) !important;
  border-radius: var(--lk-radius-sm) !important;
  color: var(--lk-text-primary) !important;
  padding: 0.65rem 1rem;
  transition: border-color var(--lk-duration) var(--lk-ease),
              box-shadow var(--lk-duration) var(--lk-ease);
}

.form-control:focus, .form-select:focus {
  border-color: var(--lk-accent-1) !important;
  box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.15) !important;
}

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

.form-label {
  font-weight: 500;
  font-size: 0.875rem;
  color: var(--lk-text-secondary);
  margin-bottom: 0.4rem;
}

.form-check-input:checked {
  background-color: var(--lk-accent-1) !important;
  border-color: var(--lk-accent-1) !important;
}

.form-switch .form-check-input {
  transition: background-color var(--lk-duration) var(--lk-ease);
}


/* ── Badges ────────────────────────────────────────────────────────────── */
.badge {
  font-weight: 500;
  letter-spacing: 0.03em;
  padding: 0.35em 0.75em;
  border-radius: 50px;
}

.badge-glow {
  box-shadow: 0 0 10px currentColor;
}

/* Status badges */
.badge-done       { background: var(--lk-success) !important; }
.badge-stuck      { background: var(--lk-danger) !important; }
.badge-exercising { background: var(--lk-accent-2) !important; }
.badge-reading    { background: var(--lk-text-muted) !important; }


/* ── Tables ────────────────────────────────────────────────────────────── */
.table {
  --bs-table-bg: transparent;
  border-collapse: separate;
  border-spacing: 0;
}

.table thead th {
  background: var(--lk-bg-elevated);
  border-bottom: 2px solid var(--lk-border) !important;
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--lk-text-muted);
  padding: 0.85rem 1rem;
  position: sticky;
  top: 0;
  z-index: 1;
}

.table tbody tr {
  transition: background var(--lk-duration) var(--lk-ease);
}

.table tbody tr:hover {
  background: var(--lk-bg-elevated) !important;
}

.table tbody td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--lk-border) !important;
  vertical-align: middle;
}

.table-highlight {
  background: rgba(6, 182, 212, 0.05) !important;
  border-left: 3px solid var(--lk-accent-1);
}


/* ── List Groups ───────────────────────────────────────────────────────── */
.list-group-item {
  background: var(--lk-bg-card) !important;
  border-color: var(--lk-border) !important;
  color: var(--lk-text-primary);
  transition: background var(--lk-duration) var(--lk-ease);
}

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


/* ── Alerts / Flash Messages ───────────────────────────────────────────── */
.alert {
  border-radius: var(--lk-radius-md) !important;
  border: none !important;
  border-left: 4px solid !important;
  padding: 1rem 1.25rem;
  backdrop-filter: blur(8px);
  animation: lk-slideDown 0.4s var(--lk-ease);
}

.alert-success { background: rgba(16, 185, 129, 0.1) !important; border-left-color: var(--lk-success) !important; color: var(--lk-success) !important; }
.alert-danger  { background: rgba(239, 68, 68, 0.1) !important; border-left-color: var(--lk-danger) !important; color: var(--lk-danger) !important; }
.alert-warning { background: rgba(245, 158, 11, 0.1) !important; border-left-color: var(--lk-warning) !important; color: var(--lk-warning) !important; }
.alert-info    { background: rgba(6, 182, 212, 0.1) !important; border-left-color: var(--lk-info) !important; color: var(--lk-info) !important; }


/* ── Sidebar ───────────────────────────────────────────────────────────── */
.lk-sidebar {
  background: var(--lk-bg-sidebar) !important;
  border-right: 1px solid var(--lk-border) !important;
  min-height: 100vh;
  width: 260px;
  min-width: 260px;
  display: flex;
  flex-direction: column;
  padding: 0;
  overflow-y: auto;
}

.lk-sidebar-brand {
  padding: 1.5rem 1.5rem 1.25rem;
  border-bottom: 1px solid var(--lk-border);
}

.lk-sidebar-brand h5 {
  font-size: 1.15rem;
  font-weight: 700;
  background: var(--lk-accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin: 0;
}

.lk-sidebar-brand .brand-icon {
  font-size: 1.4rem;
  filter: drop-shadow(0 0 8px rgba(6, 182, 212, 0.4));
}

.lk-sidebar-section {
  padding: 1rem 1rem 0.25rem;
}

.lk-sidebar-label {
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--lk-text-muted);
  padding: 0 0.75rem;
  margin-bottom: 0.4rem;
}

.lk-sidebar .nav-link {
  color: var(--lk-text-secondary) !important;
  padding: 0.55rem 0.75rem;
  border-radius: var(--lk-radius-sm);
  font-size: 0.875rem;
  font-weight: 450;
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin: 1px 0;
  position: relative;
  transition: all var(--lk-duration) var(--lk-ease);
}

.lk-sidebar .nav-link i {
  font-size: 1rem;
  width: 1.25rem;
  text-align: center;
  opacity: 0.7;
  transition: opacity var(--lk-duration) var(--lk-ease);
}

.lk-sidebar .nav-link:hover {
  color: var(--lk-text-primary) !important;
  background: var(--lk-bg-elevated);
}

.lk-sidebar .nav-link:hover i { opacity: 1; }

.lk-sidebar .nav-link.active {
  color: var(--lk-text-primary) !important;
  background: rgba(6, 182, 212, 0.1) !important;
  font-weight: 500;
}

.lk-sidebar .nav-link.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 3px;
  background: var(--lk-accent-gradient);
  border-radius: 0 3px 3px 0;
}

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

.lk-sidebar-footer {
  margin-top: auto;
  padding: 1rem 1rem 1.25rem;
  border-top: 1px solid var(--lk-border);
}

.lk-sidebar-user {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 0.75rem;
  border-radius: var(--lk-radius-sm);
  text-decoration: none;
  color: var(--lk-text-primary);
  transition: background var(--lk-duration) var(--lk-ease);
}

.lk-sidebar-user:hover { background: var(--lk-bg-elevated); color: var(--lk-text-primary); }

.lk-sidebar-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--lk-accent-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.85rem;
  color: #fff;
  flex-shrink: 0;
}

.lk-sidebar-username {
  font-weight: 500;
  font-size: 0.875rem;
}


/* ── Main Content Area ─────────────────────────────────────────────────── */
.lk-main {
  flex-grow: 1;
  padding: 2rem 2.5rem;
  overflow-y: auto;
  max-height: 100vh;
  animation: lk-fadeIn 0.35s var(--lk-ease);
}


/* ── Page Header ───────────────────────────────────────────────────────── */
.lk-page-header {
  margin-bottom: 2rem;
}

.lk-page-header h2 {
  font-size: 1.65rem;
  margin-bottom: 0.25rem;
}

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


/* ── Public Page Hero (consistent header for all public pages) ────────── */
.lk-public-hero {
  background:
    radial-gradient(ellipse at 20% 50%, rgba(6, 182, 212, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(59, 130, 246, 0.06) 0%, transparent 50%),
    var(--lk-bg-base);
  border-bottom: 1px solid var(--lk-border);
}

[data-bs-theme="light"] .lk-public-hero {
  background:
    radial-gradient(ellipse at 20% 50%, rgba(6, 182, 212, 0.06) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(59, 130, 246, 0.04) 0%, transparent 50%),
    var(--lk-bg-base);
}


/* ── Training Day Timeline / Roadmap ───────────────────────────────────── */
.lk-timeline {
  position: relative;
  padding-left: 2.5rem;
}

.lk-timeline::before {
  content: '';
  position: absolute;
  left: 15px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--lk-border);
}

.lk-timeline-item {
  position: relative;
  margin-bottom: 1.5rem;
}

.lk-timeline-dot {
  position: absolute;
  left: -2.5rem;
  top: 1.2rem;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--lk-bg-card);
  border: 2px solid var(--lk-text-muted);
  z-index: 1;
  transition: all var(--lk-duration) var(--lk-ease);
}

.lk-timeline-item--completed .lk-timeline-dot {
  background: var(--lk-success);
  border-color: var(--lk-success);
  box-shadow: 0 0 10px rgba(16, 185, 129, 0.3);
}

.lk-timeline-item--current .lk-timeline-dot {
  background: var(--lk-accent-1);
  border-color: var(--lk-accent-1);
  box-shadow: 0 0 12px rgba(6, 182, 212, 0.4);
  animation: lk-pulse 2s infinite;
}

.lk-timeline-item--locked .lk-timeline-dot {
  background: var(--lk-bg-base);
  border-style: dashed;
  border-color: var(--lk-text-muted);
}

.lk-timeline-item--locked .card {
  opacity: 0.55;
}


/* ── Progress Ring (SVG) ───────────────────────────────────────────────── */
.lk-progress-ring {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.lk-progress-ring svg {
  transform: rotate(-90deg);
}

.lk-progress-ring__track {
  fill: none;
  stroke: var(--lk-border);
  stroke-width: 6;
}

.lk-progress-ring__fill {
  fill: none;
  stroke: url(#lk-gradient);
  stroke-width: 6;
  stroke-linecap: round;
  transition: stroke-dashoffset 1s var(--lk-ease);
}

.lk-progress-ring__label {
  position: absolute;
  font-size: 1.4rem;
  font-weight: 700;
  background: var(--lk-accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}


/* ── Difficulty / Category Strips ──────────────────────────────────────── */
.card-difficulty-easy    { border-top: 3px solid var(--lk-success) !important; }
.card-difficulty-medium  { border-top: 3px solid var(--lk-warning) !important; }
.card-difficulty-hard    { border-top: 3px solid var(--lk-danger) !important; }

.difficulty-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
}

.difficulty-dot--easy   { background: var(--lk-success); box-shadow: 0 0 6px rgba(16, 185, 129, 0.4); }
.difficulty-dot--medium { background: var(--lk-warning); box-shadow: 0 0 6px rgba(245, 158, 11, 0.4); }
.difficulty-dot--hard   { background: var(--lk-danger);  box-shadow: 0 0 6px rgba(239, 68, 68, 0.4); }


/* ── Podium / Leaderboard ──────────────────────────────────────────────── */
.lk-podium {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: 1rem;
  padding: 1.5rem 0;
}

.lk-podium-place {
  text-align: center;
  padding: 1.25rem 1.5rem;
  border-radius: var(--lk-radius-lg);
  background: var(--lk-bg-card);
  border: 1px solid var(--lk-border);
  min-width: 140px;
  transition: transform var(--lk-duration) var(--lk-ease);
}

.lk-podium-place:hover { transform: translateY(-4px); }

.lk-podium-place--gold {
  border-color: #fbbf24 !important;
  box-shadow: 0 0 25px rgba(251, 191, 36, 0.12);
  order: 2;
}

.lk-podium-place--silver {
  border-color: #94a3b8 !important;
  box-shadow: 0 0 20px rgba(148, 163, 184, 0.08);
  order: 1;
}

.lk-podium-place--bronze {
  border-color: #d97706 !important;
  box-shadow: 0 0 20px rgba(217, 119, 6, 0.08);
  order: 3;
}

.lk-podium-rank {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.lk-podium-place--gold   .lk-podium-rank { color: #fbbf24; }
.lk-podium-place--silver .lk-podium-rank { color: #94a3b8; }
.lk-podium-place--bronze .lk-podium-rank { color: #d97706; }

.lk-podium-name {
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 0.2rem;
}

.lk-podium-score {
  font-size: 0.8rem;
  color: var(--lk-text-muted);
}


/* ── Rating Selectors (Questionnaire) ──────────────────────────────────── */
.lk-rating-group {
  display: flex;
  gap: 0.5rem;
}

.lk-rating-option {
  width: 48px;
  height: 48px;
  border-radius: var(--lk-radius-md);
  border: 2px solid var(--lk-border);
  background: var(--lk-bg-input);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: all var(--lk-duration) var(--lk-ease);
  color: var(--lk-text-secondary);
}

.lk-rating-option:hover {
  border-color: var(--lk-accent-1);
  background: rgba(6, 182, 212, 0.08);
  color: var(--lk-accent-1);
  transform: translateY(-2px);
}

.lk-rating-option.active,
.lk-rating-option input:checked + & {
  background: var(--lk-accent-gradient);
  border-color: transparent;
  color: #fff;
  box-shadow: 0 0 15px rgba(6, 182, 212, 0.3);
  transform: translateY(-2px);
}

/* Hidden radio inside rating option */
.lk-rating-option input[type="radio"] {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

/* NPS scale (0-10) */
.lk-nps-scale {
  display: flex;
  gap: 4px;
}

.lk-nps-option {
  flex: 1;
  padding: 0.6rem 0;
  text-align: center;
  border-radius: var(--lk-radius-sm);
  border: 1px solid var(--lk-border);
  background: var(--lk-bg-input);
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--lk-duration) var(--lk-ease);
}

.lk-nps-option:hover { border-color: var(--lk-accent-1); }

.lk-nps-option.active {
  color: #fff;
  border-color: transparent;
}

.lk-nps-option.active.nps-low    { background: var(--lk-danger); }
.lk-nps-option.active.nps-mid    { background: var(--lk-warning); }
.lk-nps-option.active.nps-high   { background: var(--lk-success); }

/* Skill level meter */
.lk-skill-meter {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.lk-skill-level {
  flex: 1;
  padding: 0.6rem 0.75rem;
  text-align: center;
  border-radius: var(--lk-radius-sm);
  border: 1px solid var(--lk-border);
  background: var(--lk-bg-input);
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 500;
  transition: all var(--lk-duration) var(--lk-ease);
}

.lk-skill-level:hover { border-color: var(--lk-accent-1); }

.lk-skill-level.active {
  background: var(--lk-accent-gradient);
  border-color: transparent;
  color: #fff;
}

/* Choice cards (multiple choice) */
.lk-choice-card {
  padding: 1rem 1.25rem;
  border-radius: var(--lk-radius-md);
  border: 2px solid var(--lk-border);
  background: var(--lk-bg-card);
  cursor: pointer;
  transition: all var(--lk-duration) var(--lk-ease);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.lk-choice-card:hover {
  border-color: var(--lk-accent-1);
  background: rgba(6, 182, 212, 0.04);
}

.lk-choice-card.active {
  border-color: var(--lk-accent-1);
  background: rgba(6, 182, 212, 0.08);
}

.lk-choice-card .lk-choice-indicator {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid var(--lk-border);
  transition: all var(--lk-duration) var(--lk-ease);
  flex-shrink: 0;
}

.lk-choice-card.active .lk-choice-indicator {
  border-color: var(--lk-accent-1);
  background: var(--lk-accent-1);
  box-shadow: inset 0 0 0 3px var(--lk-bg-card);
}


/* ── Wizard / Multi-Step Form ──────────────────────────────────────────── */
.lk-wizard-progress {
  display: flex;
  align-items: center;
  gap: 0;
  margin-bottom: 2rem;
}

.lk-wizard-step {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--lk-text-muted);
  transition: color var(--lk-duration) var(--lk-ease);
}

.lk-wizard-step-number {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: 2px solid var(--lk-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 600;
  transition: all var(--lk-duration) var(--lk-ease);
  flex-shrink: 0;
}

.lk-wizard-step.active .lk-wizard-step-number {
  background: var(--lk-accent-gradient);
  border-color: transparent;
  color: #fff;
  box-shadow: 0 0 12px rgba(6, 182, 212, 0.3);
}

.lk-wizard-step.active {
  color: var(--lk-text-primary);
}

.lk-wizard-step.completed .lk-wizard-step-number {
  background: var(--lk-success);
  border-color: var(--lk-success);
  color: #fff;
}

.lk-wizard-step.completed { color: var(--lk-success); }

.lk-wizard-connector {
  flex: 1;
  height: 2px;
  background: var(--lk-border);
  margin: 0 0.75rem;
  position: relative;
}

.lk-wizard-connector.completed {
  background: var(--lk-success);
}

/* Step panels */
.lk-wizard-panel {
  display: none;
  animation: lk-slideRight 0.35s var(--lk-ease);
}

.lk-wizard-panel.active { display: block; }


/* ── Auth Pages ────────────────────────────────────────────────────────── */
.lk-auth-bg {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(6, 182, 212, 0.06) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(59, 130, 246, 0.05) 0%, transparent 50%),
    var(--lk-bg-base);
  padding: 2rem;
}

.lk-auth-card {
  width: 100%;
  max-width: 440px;
  padding: 2.5rem;
}

.lk-auth-logo {
  font-size: 2.5rem;
  background: var(--lk-accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 12px rgba(6, 182, 212, 0.3));
}

.lk-auth-tagline {
  font-size: 0.85rem;
  color: var(--lk-text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 500;
}


/* ── Live Indicator ────────────────────────────────────────────────────── */
.lk-live-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--lk-danger);
  display: inline-block;
  animation: lk-pulse 1.5s infinite;
  box-shadow: 0 0 8px rgba(239, 68, 68, 0.5);
}


/* ── Empty States ──────────────────────────────────────────────────────── */
.lk-empty {
  text-align: center;
  padding: 3rem 1.5rem;
  color: var(--lk-text-muted);
}

.lk-empty-icon {
  font-size: 2.5rem;
  opacity: 0.4;
  margin-bottom: 1rem;
}

.lk-empty-text {
  font-size: 0.95rem;
  margin-bottom: 1rem;
}


/* ── Notification Dot ──────────────────────────────────────────────────── */
.lk-notification-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--lk-danger);
  display: inline-block;
  margin-left: 0.35rem;
  animation: lk-pulse 2s infinite;
}


/* ── Stagger Animation Helpers ─────────────────────────────────────────── */
.lk-stagger > * { animation: lk-fadeInUp 0.45s var(--lk-ease) both; }
.lk-stagger > *:nth-child(1)  { animation-delay: 0s; }
.lk-stagger > *:nth-child(2)  { animation-delay: 0.06s; }
.lk-stagger > *:nth-child(3)  { animation-delay: 0.12s; }
.lk-stagger > *:nth-child(4)  { animation-delay: 0.18s; }
.lk-stagger > *:nth-child(5)  { animation-delay: 0.24s; }
.lk-stagger > *:nth-child(6)  { animation-delay: 0.30s; }
.lk-stagger > *:nth-child(7)  { animation-delay: 0.36s; }
.lk-stagger > *:nth-child(8)  { animation-delay: 0.42s; }
.lk-stagger > *:nth-child(9)  { animation-delay: 0.48s; }
.lk-stagger > *:nth-child(10) { animation-delay: 0.54s; }
.lk-stagger > *:nth-child(11) { animation-delay: 0.60s; }
.lk-stagger > *:nth-child(12) { animation-delay: 0.66s; }


/* ── Gradient Text Utility ─────────────────────────────────────────────── */
.lk-gradient-text {
  background: var(--lk-accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}


/* ── Progress Bar ──────────────────────────────────────────────────────── */
.progress {
  background: var(--lk-bg-elevated) !important;
  border-radius: 50px !important;
  height: 8px;
  overflow: hidden;
}

.progress-bar {
  background: var(--lk-accent-gradient) !important;
  border-radius: 50px;
  transition: width 1s var(--lk-ease);
}


/* ── Modals ────────────────────────────────────────────────────────────── */
.modal-content {
  background: var(--lk-bg-card) !important;
  border: 1px solid var(--lk-border) !important;
  border-radius: var(--lk-radius-xl) !important;
  box-shadow: var(--lk-shadow-lg);
  backdrop-filter: blur(16px);
}

.modal-header {
  border-bottom-color: var(--lk-border) !important;
  padding: 1.25rem 1.5rem;
}

.modal-footer {
  border-top-color: var(--lk-border) !important;
}


/* ── Dropdown ──────────────────────────────────────────────────────────── */
.dropdown-menu {
  background: var(--lk-bg-card) !important;
  border: 1px solid var(--lk-border) !important;
  border-radius: var(--lk-radius-md) !important;
  box-shadow: var(--lk-shadow-lg);
  backdrop-filter: blur(12px);
}

.dropdown-item {
  color: var(--lk-text-secondary) !important;
  border-radius: var(--lk-radius-sm);
  padding: 0.5rem 1rem;
  transition: all var(--lk-duration) var(--lk-ease);
}

.dropdown-item:hover {
  background: var(--lk-bg-elevated) !important;
  color: var(--lk-text-primary) !important;
}


/* ── Tooltips ──────────────────────────────────────────────────────────── */
.tooltip-inner {
  background: var(--lk-bg-elevated) !important;
  border: 1px solid var(--lk-border);
  border-radius: var(--lk-radius-sm);
  font-size: 0.8rem;
  padding: 0.4rem 0.75rem;
}


/* ── Mobile Sidebar Toggle ─────────────────────────────────────────────── */
.lk-sidebar-toggle {
  display: none;
  position: fixed;
  top: 1rem;
  left: 1rem;
  z-index: 1060;
  width: 40px;
  height: 40px;
  border-radius: var(--lk-radius-sm);
  background: var(--lk-bg-card);
  border: 1px solid var(--lk-border);
  color: var(--lk-text-primary);
  font-size: 1.2rem;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(8px);
}

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

  .lk-sidebar {
    position: fixed;
    left: -280px;
    top: 0;
    z-index: 1050;
    width: 260px;
    transition: left 0.3s var(--lk-ease);
    box-shadow: none;
  }

  .lk-sidebar.show {
    left: 0;
    box-shadow: var(--lk-shadow-lg);
  }

  .lk-sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1040;
    backdrop-filter: blur(2px);
  }

  .lk-sidebar-backdrop.show { display: block; }

  .lk-main { padding: 1.5rem 1rem; padding-top: 4rem; }
}


/* ══════════════════════════════════════════════════════════════════════════
   Keyframe Animations
   ══════════════════════════════════════════════════════════════════════════ */
@keyframes lk-fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes lk-fadeInUp {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes lk-slideDown {
  from { opacity: 0; transform: translateY(-10px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes lk-slideRight {
  from { opacity: 0; transform: translateX(-15px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes lk-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.6; transform: scale(1.1); }
}

@keyframes lk-shimmer {
  0%   { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

/* Shimmer loading skeleton */
.lk-skeleton {
  background: linear-gradient(
    90deg,
    var(--lk-bg-elevated) 25%,
    rgba(148, 163, 184, 0.08) 50%,
    var(--lk-bg-elevated) 75%
  );
  background-size: 200% 100%;
  animation: lk-shimmer 1.5s infinite;
  border-radius: var(--lk-radius-sm);
}


/* ── Auto-dismiss Alerts ───────────────────────────────────────────────── */
.alert-autodismiss {
  animation: lk-slideDown 0.4s var(--lk-ease),
             lk-fadeOut 0.4s var(--lk-ease) 4.6s forwards;
}

@keyframes lk-fadeOut {
  from { opacity: 1; transform: translateY(0); }
  to   { opacity: 0; transform: translateY(-10px); }
}


/* ── Scrollbar Styling ─────────────────────────────────────────────────── */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--lk-border);
  border-radius: 3px;
}

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


/* ── Nav Tabs (Premium) ───────────────────────────────────────────────── */
.nav-tabs {
  border-bottom: 2px solid var(--lk-border) !important;
  gap: 0.25rem;
}

.nav-tabs .nav-link {
  color: var(--lk-text-muted) !important;
  border: none !important;
  border-bottom: 2px solid transparent !important;
  padding: 0.65rem 1.1rem;
  font-weight: 500;
  font-size: 0.875rem;
  border-radius: var(--lk-radius-sm) var(--lk-radius-sm) 0 0 !important;
  transition: all var(--lk-duration) var(--lk-ease);
  margin-bottom: -2px;
}

.nav-tabs .nav-link:hover {
  color: var(--lk-text-primary) !important;
  background: var(--lk-bg-elevated) !important;
  border-bottom-color: var(--lk-text-muted) !important;
}

.nav-tabs .nav-link.active {
  color: var(--lk-accent-1) !important;
  background: transparent !important;
  border-bottom: 2px solid var(--lk-accent-1) !important;
}

.nav-tabs .nav-link .badge {
  font-size: 0.7rem;
  padding: 0.2em 0.5em;
  vertical-align: middle;
}


/* ── Breadcrumbs (Premium) ────────────────────────────────────────────── */
.breadcrumb {
  background: transparent !important;
  padding: 0 !important;
  margin-bottom: 0.5rem;
  font-size: 0.8rem;
}

.breadcrumb-item a {
  color: var(--lk-text-muted) !important;
  text-decoration: none;
  transition: color var(--lk-duration) var(--lk-ease);
}

.breadcrumb-item a:hover {
  color: var(--lk-accent-1) !important;
}

.breadcrumb-item.active {
  color: var(--lk-text-secondary) !important;
}

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


/* ── Enhanced Empty States ────────────────────────────────────────────── */
.lk-empty {
  text-align: center;
  padding: 4rem 2rem;
  color: var(--lk-text-muted);
}

.lk-empty-icon {
  font-size: 3rem;
  opacity: 0.3;
  margin-bottom: 1.25rem;
  background: var(--lk-accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.lk-empty-text {
  font-size: 1rem;
  font-weight: 500;
  color: var(--lk-text-secondary);
  margin-bottom: 0.5rem;
}

.lk-empty-hint {
  font-size: 0.85rem;
  color: var(--lk-text-muted);
  margin-bottom: 1.25rem;
}

.lk-empty .btn {
  margin-top: 0.5rem;
}


/* ── Error Pages ──────────────────────────────────────────────────────── */
.lk-error-page {
  text-align: center;
  padding: 6rem 2rem;
}

.lk-error-code {
  font-size: 6rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  background: var(--lk-accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 0.5rem;
  opacity: 0.7;
}

.lk-error-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.lk-error-desc {
  font-size: 0.95rem;
  color: var(--lk-text-muted);
  max-width: 420px;
  margin: 0 auto 2rem;
}


/* ── Pagination ───────────────────────────────────────────────────────── */
.pagination {
  gap: 4px;
}

.page-link {
  background: var(--lk-bg-card) !important;
  border: 1px solid var(--lk-border) !important;
  color: var(--lk-text-secondary) !important;
  border-radius: var(--lk-radius-sm) !important;
  padding: 0.45rem 0.85rem;
  font-weight: 500;
  font-size: 0.85rem;
  transition: all var(--lk-duration) var(--lk-ease);
}

.page-link:hover {
  background: var(--lk-bg-elevated) !important;
  color: var(--lk-accent-1) !important;
  border-color: var(--lk-border-hover) !important;
}

.page-item.active .page-link {
  background: var(--lk-accent-gradient) !important;
  border-color: transparent !important;
  color: #fff !important;
  box-shadow: 0 2px 8px rgba(6, 182, 212, 0.25);
}

.page-item.disabled .page-link {
  background: var(--lk-bg-elevated) !important;
  color: var(--lk-text-muted) !important;
  opacity: 0.5;
}


/* ── Toast Notifications ──────────────────────────────────────────────── */
.toast {
  background: var(--lk-bg-card) !important;
  border: 1px solid var(--lk-border) !important;
  border-radius: var(--lk-radius-md) !important;
  box-shadow: var(--lk-shadow-lg);
  backdrop-filter: blur(12px);
}

.toast-header {
  background: transparent !important;
  border-bottom: 1px solid var(--lk-border) !important;
  color: var(--lk-text-primary) !important;
}

.toast-body {
  color: var(--lk-text-secondary);
}


/* ── Links ────────────────────────────────────────────────────────────── */
a:not(.btn):not(.nav-link):not(.dropdown-item):not(.list-group-item):not(.page-link):not(.lk-sidebar-user) {
  color: var(--lk-accent-1);
  text-decoration: none;
  transition: color var(--lk-duration) var(--lk-ease);
}

a:not(.btn):not(.nav-link):not(.dropdown-item):not(.list-group-item):not(.page-link):not(.lk-sidebar-user):hover {
  color: var(--lk-accent-2);
}


/* ── Text Selection ───────────────────────────────────────────────────── */
::selection {
  background: rgba(6, 182, 212, 0.25);
  color: var(--lk-text-primary);
}


/* ── Bootstrap bg- Utility Overrides ──────────────────────────────────── */
.bg-body-secondary { background: var(--lk-bg-elevated) !important; }
.bg-body-tertiary  { background: var(--lk-bg-elevated) !important; }


/* ── Horizontal Rule ──────────────────────────────────────────────────── */
hr {
  border-color: var(--lk-border) !important;
  opacity: 1;
}


/* ── Focus Rings (Accessibility) ──────────────────────────────────────── */
:focus-visible {
  outline: 2px solid var(--lk-accent-1) !important;
  outline-offset: 2px;
  border-radius: var(--lk-radius-sm);
}

.btn:focus-visible {
  box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.25) !important;
}


/* ── Reduced Motion ───────────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .lk-stagger > * { animation: none !important; }
  .card-lift:hover { transform: none; }
  .btn:hover { transform: none; }
}


/* ── Module Progress Steps ────────────────────────────────────────────── */
.lk-module-list .list-group-item {
  border-left: 3px solid transparent;
  transition: all var(--lk-duration) var(--lk-ease);
}

.lk-module-list .list-group-item:hover {
  border-left-color: var(--lk-accent-1);
}

.lk-module-list .list-group-item.lk-module--completed {
  border-left-color: var(--lk-success);
}

.lk-module-list .list-group-item.lk-module--in-progress {
  border-left-color: var(--lk-warning);
}


/* ── Credential Box ───────────────────────────────────────────────────── */
.lk-credential-box {
  background: var(--lk-bg-elevated);
  border: 1px solid var(--lk-border);
  border-radius: var(--lk-radius-md);
  padding: 0.75rem 1rem;
}


/* ── Print Override: Skip Premium Styling ──────────────────────────────── */
@media print {
  .lk-sidebar, .lk-sidebar-toggle, .lk-sidebar-backdrop { display: none !important; }
  .lk-main { padding: 0 !important; max-height: none !important; }
  body { background: #fff !important; }
  .card { box-shadow: none !important; backdrop-filter: none !important; border: 1px solid #ddd !important; }
  .kpi-value { -webkit-text-fill-color: #000 !important; color: #000 !important; }
  .alert-autodismiss { animation: none !important; }
}

/* ── Connection-lost bar (LKWS, static/js/ws-connection.js) ─────────────── */
.lk-conn-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 2000;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.5rem 1rem;
  padding: 0.55rem 1rem;
  background: var(--lk-warning);
  color: #1a1206;
  font-weight: 600;
  box-shadow: var(--lk-shadow-md);
  transform: translateY(-105%);
  transition: transform 0.25s ease;
  pointer-events: none;
}
.lk-conn-bar.is-visible {
  transform: translateY(0);
  pointer-events: auto;
}
.lk-conn-bar.is-up {
  background: var(--lk-success);
  color: #042417;
}
.lk-conn-bar .lk-conn-sub {
  font-weight: 500;
  opacity: 0.8;
}
.lk-conn-bar .lk-conn-actions {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.lk-conn-bar .lk-conn-refresh {
  font-weight: 600;
}