/* ── Design tokens ───────────────────────────────────────────────────────── */
:root {
  --primary:      #6366f1;
  --primary-dark: #4f46e5;
  --primary-light:#eef2ff;
  --accent:       #f59e0b;
  --accent-dark:  #d97706;
  --success:      #10b981;
  --surface:      #ffffff;
  --surface-2:    #f8fafc;
  --border:       #e2e8f0;
  --text:         #0f172a;
  --text-muted:   #64748b;
  --radius-sm:    8px;
  --radius:       12px;
  --radius-lg:    18px;
  --shadow-sm:    0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --shadow:       0 4px 16px rgba(0,0,0,.07), 0 1px 4px rgba(0,0,0,.04);
  --shadow-lg:    0 12px 40px rgba(0,0,0,.10), 0 4px 12px rgba(0,0,0,.05);
  --transition:   .18s cubic-bezier(.4,0,.2,1);
}

/* ── Reset & base ────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
body {
  background: var(--surface-2);
  color: var(--text);
  font-family: 'Inter', 'Noto Sans Tamil', 'Tamil Sangam MN', 'Latha',
               'Noto Sans Devanagari', 'Kohinoor Devanagari', 'Mangal',
               'Noto Sans Bengali', 'Vrinda',
               'Noto Sans Thai', 'Leelawadee UI',
               'Noto Sans Arabic', 'Segoe UI',
               'Noto Sans CJK SC', 'PingFang SC', 'Hiragino Sans',
               system-ui, -apple-system, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; }

/* Complex scripts need more vertical space for combining chars (Tamil, Devanagari, Thai, etc.) */
:lang(ta), :lang(hi), :lang(bn), :lang(th), :lang(ar), :lang(ko), :lang(ja), :lang(zh) {
  line-height: 1.7;
}
:lang(ta) .why-us-title, :lang(hi) .why-us-title, :lang(bn) .why-us-title, :lang(th) .why-us-title { font-size: 1rem; }
:lang(ta) .why-us-sub, :lang(hi) .why-us-sub, :lang(bn) .why-us-sub, :lang(th) .why-us-sub { font-size: .85rem; }

/* ── Navbar ──────────────────────────────────────────────────────────────── */
.navbar {
  background: rgba(255,255,255,.92) !important;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding-top: 0;
  padding-bottom: 0;
  min-height: 60px;
}
.navbar-brand {
  color: var(--text) !important;
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -.02em;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 0;
}
.navbar-brand i {
  color: var(--primary);
  font-size: 1.25rem;
}
.navbar .nav-link {
  color: var(--text-muted) !important;
  font-size: .9rem;
  font-weight: 500;
  padding: 8px 14px !important;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}
.navbar .nav-link:hover,
.navbar .nav-link:focus {
  color: var(--text) !important;
  background: var(--surface-2);
}
.navbar .navbar-toggler {
  border: none;
  padding: 6px;
  color: var(--text-muted);
}
.navbar .navbar-toggler:focus { box-shadow: none; }
.navbar .dropdown-menu {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 6px;
  margin-top: 8px !important;
}
.navbar .dropdown-item {
  border-radius: 6px;
  font-size: .875rem;
  padding: 8px 12px;
  color: var(--text);
  transition: background var(--transition);
}
.navbar .dropdown-item:hover { background: #e9ecef; }

/* ── Main content ────────────────────────────────────────────────────────── */
main.py-4 { padding-top: 2rem !important; padding-bottom: 3rem !important; }

/* ── Hero ────────────────────────────────────────────────────────────────── */
.hero-section {
  background: #0c0f1a;
  min-height: 300px;
  border-radius: var(--radius-lg) !important;
  overflow: hidden;
}

.hero-bg-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-content { z-index: 1; }

.hero-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(99,102,241,.2);
  border: 1px solid rgba(99,102,241,.35);
  color: #a5b4fc;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: 5px 12px;
  border-radius: 100px;
}
.hero-chip i { font-size: .85rem; }

.hero-icon-wrap {
  width: 48px; height: 48px;
  background: rgba(99,102,241,.2);
  border: 1px solid rgba(99,102,241,.4);
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
  color: #a5b4fc;
  flex-shrink: 0;
}

.hero-accent {
  background: linear-gradient(100deg, #a5b4fc 0%, #34d399 60%, #fbbf24 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-stats { gap: 12px; }

.hero-stat-card {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.1);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: var(--radius);
  padding: 16px 24px;
  text-align: center;
  min-width: 120px;
  transition: border-color var(--transition), background var(--transition);
}
.hero-stat-card:hover {
  background: rgba(255,255,255,.1);
  border-color: rgba(165,180,252,.3);
}
.hero-stat-num {
  font-size: 2rem;
  font-weight: 700;
  color: #e0e7ff;
  line-height: 1;
  letter-spacing: -.04em;
}
.hero-stat-label {
  font-size: .72rem;
  color: rgba(255,255,255,.5);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: .08em;
}

/* ── Section header ──────────────────────────────────────────────────────── */
.section-title {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -.03em;
  color: var(--text);
}

/* ── Course card ─────────────────────────────────────────────────────────── */
.course-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg) !important;
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.course-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg) !important;
  border-color: rgba(99,102,241,.25);
}
.course-card .card-body { padding: 1.25rem; }

.course-img { height: 180px; object-fit: cover; }
.course-img-placeholder {
  height: 180px;
  background: linear-gradient(135deg, #312e81 0%, #1e1b4b 50%, #0f172a 100%);
}

.course-card .card-title {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -.01em;
  line-height: 1.35;
  color: var(--text);
}
.course-card .card-text {
  font-size: .82rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.course-meta {
  display: flex;
  gap: 12px;
  font-size: .78rem;
  color: var(--text-muted);
  margin-bottom: .75rem;
}
.course-meta span { display: flex; align-items: center; gap: 4px; }

.course-price {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -.03em;
  color: var(--text);
  line-height: 1;
  margin-bottom: .5rem;
}

/* ── Buttons override ────────────────────────────────────────────────────── */
.btn-primary {
  background: var(--primary);
  border-color: var(--primary);
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: background var(--transition), border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}
.btn-primary:hover, .btn-primary:focus {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  box-shadow: 0 4px 12px rgba(99,102,241,.35);
}
.btn-primary:active { transform: scale(.97); }

.btn-outline-primary {
  border-color: var(--primary);
  color: var(--primary);
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: background var(--transition), color var(--transition);
}
.btn-outline-primary:hover {
  background: var(--primary);
  border-color: var(--primary);
}

.btn-warning {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: background var(--transition), box-shadow var(--transition);
}
.btn-warning:hover, .btn-warning:focus {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
  color: #fff;
  box-shadow: 0 4px 12px rgba(245,158,11,.35);
}

.btn-outline-secondary {
  border-color: var(--border);
  color: var(--text-muted);
  font-weight: 500;
  border-radius: var(--radius-sm);
}
.btn-outline-secondary:hover {
  background: var(--surface-2);
  border-color: #cbd5e1;
  color: var(--text);
}

/* ── Badge override ──────────────────────────────────────────────────────── */
.badge.bg-success {
  background: #dcfce7 !important;
  color: #15803d !important;
  font-weight: 600;
}
.badge.bg-info.text-dark {
  background: #e0f2fe !important;
  color: #0369a1 !important;
}
.badge.bg-warning.text-dark {
  background: #fef3c7 !important;
  color: #92400e !important;
}
.badge.bg-primary {
  background: var(--primary-light) !important;
  color: var(--primary) !important;
  font-weight: 600;
}
.badge.bg-secondary {
  background: #f1f5f9 !important;
  color: var(--text-muted) !important;
}

/* ── Breadcrumb ──────────────────────────────────────────────────────────── */
.breadcrumb {
  font-size: .82rem;
  color: var(--text-muted);
}
.breadcrumb-item a { color: var(--primary); }
.breadcrumb-item.active { color: var(--text-muted); }


/* ── Lecture list (legacy, used on other pages if any) ───────────────────── */
.lecture-list {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
}
.lecture-row {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  transition: background var(--transition);
}
.lecture-row:last-child { border-bottom: none; }
.lecture-row:hover { background: var(--surface-2); }
.lecture-row.lecture-done { background: #f0fdf4; }
.lecture-row.lecture-done:hover { background: #dcfce7; }
.lecture-row.lecture-locked { opacity: .65; }
.lecture-title { font-size: .9rem; font-weight: 500; color: var(--text); line-height: 1.35; }
.lecture-desc { font-size: .8rem; margin-top: 4px; padding-left: 24px; line-height: 1.5; color: var(--text-muted); }

/* ── Course Hero ─────────────────────────────────────────────────────────── */
.course-hero {
  position: relative;
  background: #0c0f1a;
  padding: 56px 48px 48px;
  margin-bottom: 0;
}
.course-hero-img {
  position: absolute;
  inset: 0;
  background-size: 100% auto;
  background-position: center center;
  background-repeat: no-repeat;
  opacity: .25;
}
.course-hero-overlay { display: none; }
.course-hero-body {
  position: relative;
  z-index: 1;
}
.breadcrumb-hero { background: transparent; padding: 0; margin-bottom: 0; }
.breadcrumb-hero .breadcrumb-item { color: rgba(255,255,255,.5); font-size: .82rem; }
.breadcrumb-hero .breadcrumb-item a { color: rgba(165,180,252,.8); }
.breadcrumb-hero .breadcrumb-item.active { color: rgba(255,255,255,.5); }
.breadcrumb-hero .breadcrumb-item + .breadcrumb-item::before { color: rgba(255,255,255,.3); }
.course-hero-sub {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(99,102,241,.2);
  border: 1px solid rgba(99,102,241,.35);
  color: #a5b4fc;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: 5px 12px;
  border-radius: 100px;
  margin-bottom: 20px;
}
.course-hero-title {
  font-size: 2.2rem;
  font-weight: 700;
  letter-spacing: -.03em;
  color: #fff;
  margin-bottom: 20px;
  line-height: 1.2;
}
@media (max-width: 575px) { .course-hero-title { font-size: 1.5rem; } }
.course-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  font-size: .9rem;
  color: rgba(255,255,255,.7);
  margin-top: 4px;
}
.course-hero-meta span { display: flex; align-items: center; gap: 7px; }
.course-hero-meta i { font-size: .9rem; }
.course-hero-free {
  color: #34d399 !important;
  background: rgba(52,211,153,.12);
  border: 1px solid rgba(52,211,153,.25);
  border-radius: 100px;
  padding: 2px 10px;
}

/* ── Course page layout ──────────────────────────────────────────────────── */
.course-page-body { padding-top: 32px; padding-bottom: 48px; }

/* ── Course info blocks ──────────────────────────────────────────────────── */
.course-info-block {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 20px;
  overflow: hidden;
}
.course-info-block-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 20px;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .07em;
  text-transform: uppercase;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  background: var(--surface-2);
}
.course-info-block-header i { color: var(--primary); font-size: 1rem; }
.course-info-block-body {
  padding: 18px 20px;
  font-size: .9rem;
  line-height: 1.75;
  color: var(--text);
}

.course-info-pill {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
  height: 100%;
}
.course-info-pill-icon {
  width: 40px; height: 40px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}
.course-info-pill-icon--blue   { background: #eff6ff; color: #3b82f6; }
.course-info-pill-icon--violet { background: var(--primary-light); color: var(--primary); }
.course-info-pill-label {
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .07em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 4px;
}
.course-info-pill-text { font-size: .875rem; color: var(--text); line-height: 1.5; }

/* ── Section heading ─────────────────────────────────────────────────────── */
.course-section-title {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -.02em;
}
.course-lecture-count {
  font-size: .8rem;
  font-weight: 500;
  color: var(--text-muted);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 3px 12px;
}

/* ── Lecture rows (new design) ───────────────────────────────────────────── */
.lec-list {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
}

.lec-row {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
  position: relative;
}
.lec-row:last-child { border-bottom: none; }

.lec-row--open:hover  { background: var(--surface-2); }
.lec-row--done        { background: #f0fdf4; }
.lec-row--done:hover  { background: #dcfce7; }
.lec-row--locked      { opacity: .6; }

/* Left accent line */
.lec-row--open::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--primary);
  opacity: 0;
  border-radius: 0 2px 2px 0;
  transition: opacity var(--transition);
}
.lec-row--open:hover::before { opacity: 1; }
.lec-row--done::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--success);
  border-radius: 0 2px 2px 0;
}

/* Number badge */
.lec-num {
  width: 32px; height: 32px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  font-size: .78rem;
  font-weight: 700;
  margin-top: 1px;
}
.lec-row--open   .lec-num { background: var(--primary-light); color: var(--primary); }
.lec-row--done   .lec-num { background: #dcfce7; color: #16a34a; }
.lec-row--locked .lec-num { background: var(--surface-2); color: var(--text-muted); }

/* Thumbnail */
.lec-thumb {
  position: relative;
  flex-shrink: 0;
  width: 80px; height: 52px;
  border-radius: 6px;
  overflow: hidden;
}
.lec-thumb-img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
}
.lec-thumb-img--locked { opacity: .35; }
.lec-thumb-bg {
  width: 100%; height: 100%;
  background: linear-gradient(135deg, #1a2a4a 0%, #2d4a7a 50%, #1e3a6e 100%);
}
.lec-thumb-bg--locked { opacity: .35; }
.lec-thumb-play {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.2rem;
  background: rgba(0,0,0,.25);
  text-shadow: 0 1px 3px rgba(0,0,0,.6);
}

/* Content */
.lec-content { flex: 1; min-width: 0; }
.lec-title-row { display: flex; align-items: center; flex-wrap: wrap; gap: 6px; margin-bottom: 2px; }
.lec-title {
  font-size: .9rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.35;
}
.lec-title--locked { color: var(--text-muted); }
.lec-title--clickable { cursor: pointer; }
.lec-title--clickable:hover { color: var(--primary); }
.lec-chevron { font-size: .7rem; color: var(--text-muted); }

.lec-desc {
  font-size: .8rem;
  color: var(--text-muted);
  line-height: 1.55;
  margin-top: 4px;
}

.lec-concepts { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 6px; }
.lec-concept {
  font-size: .72rem;
  font-weight: 500;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text-muted);
  border-radius: 4px;
  padding: 2px 7px;
}

/* Slides list */
.lec-slides { margin-top: 8px; border-top: 1px solid var(--border); }
.lec-slide-row {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 5px 0;
  border-bottom: 1px solid var(--border);
}
.lec-slide-row:last-child { border-bottom: none; }
.lec-slide-num { font-size: .72rem; color: var(--text-muted); min-width: 18px; flex-shrink: 0; }
.lec-slide-title { font-size: .82rem; color: var(--text); flex: 1; }
.lec-slide-dur { font-size: .72rem; color: var(--text-muted); white-space: nowrap; margin-left: auto; }

/* Lecture badges */
.lec-badge {
  font-size: .68rem;
  font-weight: 600;
  letter-spacing: .04em;
  text-transform: uppercase;
  border-radius: 4px;
  padding: 2px 7px;
}
.lec-badge--cyan   { background: #e0f2fe; color: #0369a1; }
.lec-badge--green  { background: #dcfce7; color: #16a34a; }
.lec-badge--blue   { background: var(--primary-light); color: var(--primary); }
.lec-badge--amber  { background: #fef3c7; color: #92400e; }
.lec-badge--grey   { background: var(--surface-2); color: var(--text-muted); }
.lec-badge--through { text-decoration: line-through; }

/* Lecture actions (right column) */
.lec-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 6px;
  flex-shrink: 0;
}
.lec-duration {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: .75rem;
  color: var(--text-muted);
  white-space: nowrap;
}
.lec-action-btn { display: flex; flex-direction: column; align-items: flex-end; gap: 4px; }
.lec-cooldown {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: .75rem;
  color: #92400e;
  background: #fef3c7;
  border: 1px solid #fde68a;
  border-radius: 6px;
  padding: 3px 8px;
  white-space: nowrap;
}
.lec-btn-repeat {
  border: 1px solid #bbf7d0;
  background: #f0fdf4;
  color: #16a34a;
  border-radius: var(--radius-sm);
  font-size: .8rem;
  font-weight: 500;
  padding: 4px 10px;
  transition: background var(--transition);
}
.lec-btn-repeat:hover { background: #dcfce7; color: #15803d; }

/* ── Course sidebar ──────────────────────────────────────────────────────── */
.course-sidebar {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sidebar-progress {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
}
.sidebar-progress-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: .8rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}
.sidebar-progress-pct { color: var(--primary); }
.sidebar-progress-bar {
  height: 6px;
  background: var(--border);
  border-radius: 10px;
  overflow: hidden;
  margin-bottom: 6px;
}
.sidebar-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), #34d399);
  border-radius: 10px;
  transition: width .4s ease;
}
.sidebar-progress-label { font-size: .75rem; color: var(--text-muted); }

.sidebar-cta {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.sidebar-price {
  font-size: 2.2rem;
  font-weight: 700;
  letter-spacing: -.05em;
  color: var(--text);
  line-height: 1;
}
.sidebar-price span { font-size: 1.2rem; font-weight: 500; color: var(--text-muted); }

.sidebar-enrolled-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: #dcfce7;
  color: #16a34a;
  font-size: .875rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  padding: 10px;
}
.sidebar-course-done {
  display: flex;
  align-items: center;
  gap: 12px;
  background: linear-gradient(135deg, #1a1040, #0f1f3d);
  border: 1px solid rgba(255,215,0,.3);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
}
.sidebar-course-done i {
  font-size: 1.8rem;
  color: #ffd700;
  filter: drop-shadow(0 0 8px rgba(255,215,0,.5));
  flex-shrink: 0;
}
.sidebar-course-done-title {
  font-size: .95rem;
  font-weight: 700;
  color: #fff;
}
.sidebar-course-done-sub {
  font-size: .78rem;
  color: rgba(255,255,255,.5);
  margin-top: 2px;
}

.btn-cert {
  background: linear-gradient(135deg, #b8860b, #ffd700, #b8860b);
  background-size: 200% auto;
  border: none;
  color: #1a1040;
  font-weight: 700;
  font-size: .95rem;
  border-radius: var(--radius-sm);
  padding: 12px;
  transition: background-position .4s, box-shadow var(--transition), transform var(--transition);
  box-shadow: 0 4px 16px rgba(255,215,0,.3);
}
.btn-cert:hover {
  background-position: right center;
  box-shadow: 0 6px 24px rgba(255,215,0,.5);
  color: #1a1040;
  transform: translateY(-1px);
}
.btn-cert:active { transform: scale(.97); }

.sidebar-free-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: .875rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  padding: 10px;
}

.sidebar-mentorship {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 12px;
}
.sidebar-mentorship-title {
  font-size: .875rem;
  font-weight: 700;
  color: var(--text);
  padding: 14px 18px 10px;
}
.sidebar-mentorship-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.sidebar-mentorship-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 18px;
  border-top: 1px solid var(--border);
  font-size: .875rem;
  color: var(--text);
  font-weight: 500;
}
.sidebar-mentorship-icon {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .95rem;
  flex-shrink: 0;
}
.sidebar-mentorship-locked {
  font-size: .78rem;
  color: var(--text-muted);
  margin: 0;
  padding: 10px 18px;
  border-top: 1px solid var(--border);
}

.sidebar-features {
  list-style: none;
  padding: 0;
  margin: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.sidebar-features li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 18px;
  font-size: .875rem;
  color: var(--text);
  border-bottom: 1px solid var(--border);
}
.sidebar-features li:last-child { border-bottom: none; }
.sidebar-feat-icon {
  width: 32px; height: 32px;
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: .9rem;
  flex-shrink: 0;
}
.sidebar-feat-icon--violet { background: var(--primary-light); color: var(--primary); }
.sidebar-feat-icon--blue   { background: #eff6ff; color: #3b82f6; }
.sidebar-feat-icon--amber  { background: #fef3c7; color: #d97706; }
.sidebar-feat-icon--green  { background: #dcfce7; color: #16a34a; }

/* ── Alert override ──────────────────────────────────────────────────────── */
.alert-light.border {
  background: var(--surface-2);
  border: 1px solid var(--border) !important;
  border-radius: var(--radius-sm);
  color: var(--text);
}

/* ── Custom Video Player ─────────────────────────────────────────────────── */
#customPlayer {
  background: #000;
  border-radius: var(--radius);
  user-select: none;
  position: relative;
}

#playerRatio {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #000;
  border-radius: var(--radius);
  overflow: hidden;
}

#mainVideo {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  cursor: pointer;
}

#customPlayer:fullscreen,
#customPlayer:-webkit-full-screen,
#customPlayer:-moz-full-screen {
  border-radius: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #000;
}
#customPlayer:fullscreen #playerRatio,
#customPlayer:-webkit-full-screen #playerRatio,
#customPlayer:-moz-full-screen #playerRatio {
  width: 100vw;
  height: 100vh;
  aspect-ratio: unset;
  max-height: none;
  margin: 0;
}
#customPlayer:fullscreen #mainVideo,
#customPlayer:-webkit-full-screen #mainVideo,
#customPlayer:-moz-full-screen #mainVideo {
  object-fit: contain;
  object-position: center;
}

#videoOverlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,.25);
  cursor: pointer;
  transition: opacity .2s;
}
#videoOverlay.hidden { opacity: 0; pointer-events: none; }

#overlayPlayBtn {
  width: 72px; height: 72px;
  border-radius: 50%;
  background: rgba(99,102,241,.35);
  backdrop-filter: blur(6px);
  border: 2px solid rgba(165,180,252,.6);
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  font-size: 28px;
  padding-left: 4px;
  transition: transform .15s, background .15s;
}
#videoOverlay:hover #overlayPlayBtn {
  transform: scale(1.1);
  background: rgba(99,102,241,.55);
}

#videoControls {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  background: linear-gradient(transparent, rgba(0,0,0,.85));
  padding: 24px 0 0;
  opacity: 0;
  transition: opacity .2s;
  pointer-events: none;
}
/* Мышь: показываем по hover только на устройствах с настоящим курсором */
@media (hover: hover) {
  #playerRatio:hover #videoControls { opacity: 1; pointer-events: auto; }
}
/* JS-класс: управляет видимостью на тач-устройствах и в полноэкранном режиме */
#playerRatio.controls-visible #videoControls {
  opacity: 1;
  pointer-events: auto;
}

#progressBar {
  height: 4px;
  background: rgba(255,255,255,.25);
  cursor: pointer;
  margin: 0 12px 10px;
  border-radius: 4px;
  transition: height .12s;
  position: relative;
}
#progressBar:hover { height: 7px; }
#progressFill {
  height: 100%;
  background: var(--primary);
  border-radius: 4px;
  pointer-events: none;
  min-width: 0;
}

#controlsRow {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 2px 12px 10px;
  box-sizing: border-box;
}

#controlsRow button,
#controlsRow button:focus,
#controlsRow button:active {
  all: unset;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff !important;
  font-size: 20px;
  cursor: pointer;
  line-height: 1;
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 4px;
  transition: color .15s, background .15s;
}
#controlsRow button:hover { color: #a5b4fc !important; }

#timeDisplay {
  color: rgba(255,255,255,.85);
  font-size: 12px;
  white-space: nowrap;
  font-family: ui-monospace, 'SF Mono', monospace;
}

#controlsRight {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 8px;
  position: relative;
}

#volumeSlider {
  width: 70px;
  cursor: pointer;
  accent-color: var(--primary);
  vertical-align: middle;
}

#controlsRight .vol-icon {
  color: rgba(255,255,255,.75);
  font-size: 16px;
  flex-shrink: 0;
}

/* ── Speed menu ──────────────────────────────────────────────────────────── */
.speed-menu {
  position: absolute;
  bottom: 50px;
  right: 44px;
  background: rgba(15,15,20,.95);
  border-radius: var(--radius-sm);
  overflow: hidden;
  z-index: 20;
  min-width: 64px;
  box-shadow: 0 8px 24px rgba(0,0,0,.4);
}
.speed-menu span {
  display: block;
  padding: 7px 16px;
  color: rgba(255,255,255,.8);
  font-size: 12px;
  font-family: ui-monospace, monospace;
  cursor: pointer;
  text-align: center;
  transition: background .1s;
}
.speed-menu span:hover, .speed-menu span.active {
  background: var(--primary);
  color: #fff;
}

/* ── Timestamps ──────────────────────────────────────────────────────────── */
.ts-row { border-radius: 6px; padding: 3px 6px; transition: background .1s; }
.ts-row:hover { background: rgba(99,102,241,.08) !important; }
.ts-row.ts-active { background: rgba(99,102,241,.15) !important; }
.ts-row.ts-active .ts-title { color: var(--primary); font-weight: 600; }

/* ── Slides ──────────────────────────────────────────────────────────────── */
.slide-text { white-space: pre-wrap; line-height: 1.75; }
.code-block {
  background: #0f172a;
  color: #e2e8f0;
  padding: 1.1rem 1.25rem;
  border-radius: var(--radius);
  overflow-x: auto;
  font-size: .82rem;
  font-family: ui-monospace, 'SF Mono', 'Fira Code', monospace;
  line-height: 1.6;
  border: 1px solid rgba(255,255,255,.06);
}

/* ── Admin ───────────────────────────────────────────────────────────────── */
.admin-sidebar { min-height: calc(100vh - 60px); }

/* ── Login page ──────────────────────────────────────────────────────────── */
.login-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  background: var(--surface);
}
.login-card .card-body { padding: 2rem; }
.form-control {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: .9rem;
  padding: .55rem .875rem;
  color: var(--text);
  background: var(--surface);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99,102,241,.12);
}
.form-label {
  font-size: .82rem;
  font-weight: 500;
  color: var(--text);
  margin-bottom: .4rem;
}

/* ── Messenger buttons (login) ───────────────────────────────────────────── */
.messenger-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  text-decoration: none;
  color: var(--text-muted);
  font-size: .76rem;
  font-weight: 500;
  transition: transform var(--transition), color var(--transition);
}
.messenger-btn img {
  border-radius: 14px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition);
}
.messenger-btn:hover { transform: translateY(-3px); color: var(--text); }
.messenger-btn:hover img { box-shadow: var(--shadow); }

/* ── Card base override ──────────────────────────────────────────────────── */
.card {
  border: 1px solid var(--border) !important;
  border-radius: var(--radius-lg) !important;
  box-shadow: var(--shadow-sm) !important;
}
.card.shadow, .card.shadow-sm {
  box-shadow: var(--shadow) !important;
}

/* ── Sort btn group ──────────────────────────────────────────────────────── */
.btn-group .btn { font-size: .8rem; }

/* ── Responsive tweaks ───────────────────────────────────────────────────── */
@media (max-width: 575px) {
  .hero-section { min-height: 220px; }
  .hero-stat-num { font-size: 1.5rem; }
  main.py-4 { padding-top: 1rem !important; }
}

/* ── Sticky top ──────────────────────────────────────────────────────────── */
.sticky-top { z-index: 100; }

/* ── Certificate page ───────────────────────────────────────────────────── */
.cert-page { max-width: 1160px; padding-top: 28px; padding-bottom: 48px; }

.cert-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.cert-wrap {
  background: #0f0c29;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0,0,0,.35), 0 0 0 1px rgba(255,215,0,.15);
  line-height: 0;
}
.cert-wrap svg { width: 100%; height: auto; display: block; }

.cert-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 14px;
  font-size: .82rem;
  color: var(--text-muted);
  justify-content: center;
}

@media print {
  .navbar, .cert-actions, .cert-meta, footer { display: none !important; }
  .cert-page { padding: 0; max-width: 100%; }
  .cert-wrap { box-shadow: none; border-radius: 0; }
  body { background: white; }
}

/* ── Smooth scroll ───────────────────────────────────────────────────────── */
html { scroll-behavior: auto; }

/* ══════════════════════════════════════════════════════════════════════════
   LECTURE PAGE
   ══════════════════════════════════════════════════════════════════════════ */

/* ── Two-column layout ───────────────────────────────────────────────────── */
.lec-page {
  display: flex;
  min-height: calc(100vh - 60px);
  align-items: flex-start;
  width: 100%;
}

/* override main padding on lecture page */
#mainContent:has(.lec-page) { padding-top: 0 !important; padding-bottom: 0 !important; }

/* Full-width navbar on lecture page */
body:has(.lec-page) .navbar > .container {
  max-width: 100%;
  padding-left: 20px;
  padding-right: 20px;
}

/* ── Sidebar ─────────────────────────────────────────────────────────────── */
.lec-sidebar {
  width: 280px;
  flex-shrink: 0;
  background: var(--surface);
  border-right: 1px solid var(--border);
  height: calc(100vh - 60px);
  position: sticky;
  top: 60px;
  overflow-y: auto;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
}
.lec-sidebar::-webkit-scrollbar { width: 4px; }
.lec-sidebar::-webkit-scrollbar-track { background: transparent; }
.lec-sidebar::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }

.lec-sidebar-header {
  padding: 16px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  position: sticky;
  top: 0;
  z-index: 2;
}
.lec-sidebar-course-link {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text);
  font-size: .82rem;
  font-weight: 600;
  text-decoration: none;
  margin-bottom: 10px;
  transition: color var(--transition);
}
.lec-sidebar-course-link i { color: var(--text-muted); font-size: .8rem; flex-shrink: 0; }
.lec-sidebar-course-link:hover { color: var(--primary); }
.lec-sidebar-course-link:hover i { color: var(--primary); }
.lec-sidebar-course-link span {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.lec-sidebar-progress-wrap { display: flex; align-items: center; gap: 8px; }
.lec-sidebar-progress-bar {
  flex: 1;
  height: 4px;
  background: var(--border);
  border-radius: 4px;
  overflow: hidden;
}
.lec-sidebar-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), #34d399);
  border-radius: 4px;
  transition: width .4s;
}
.lec-sidebar-progress-label { font-size: .72rem; color: var(--text-muted); white-space: nowrap; }

.lec-sidebar-list { flex: 1; padding: 8px 0; }

/* Nav items */
.lec-nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 16px;
  font-size: .82rem;
  color: var(--text);
  text-decoration: none;
  transition: background var(--transition);
  border-left: 3px solid transparent;
  position: relative;
}
.lec-nav-item:hover { background: var(--surface-2); }

.lec-nav-item--active {
  background: var(--primary-light);
  border-left-color: var(--primary);
  color: var(--primary);
  font-weight: 600;
}
.lec-nav-item--active:hover { background: var(--primary-light); }

.lec-nav-item--done { color: var(--text-muted); }
.lec-nav-item--done .lec-nav-title { color: var(--text-muted); }

.lec-nav-item--locked {
  opacity: .5;
  cursor: default;
}

.lec-nav-item--open { color: var(--text); }

.lec-nav-num {
  width: 24px; height: 24px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: .7rem;
  font-weight: 700;
  flex-shrink: 0;
}
.lec-nav-item--active .lec-nav-num { background: var(--primary); color: #fff; }
.lec-nav-item--done   .lec-nav-num { background: #dcfce7; color: #16a34a; }
.lec-nav-item--locked .lec-nav-num { background: var(--surface-2); color: var(--text-muted); }
.lec-nav-item--open   .lec-nav-num { background: var(--surface-2); color: var(--text-muted); }

.lec-nav-title {
  flex: 1;
  line-height: 1.3;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

/* Timestamps / slide list under active */
.lec-nav-timestamps { padding: 4px 0 6px 52px; }
.lec-nav-ts {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 4px 16px 4px 0;
  border-radius: 5px;
  cursor: pointer;
  transition: background var(--transition);
}
.lec-nav-ts:hover { background: var(--surface-2); }
.lec-nav-ts-time {
  font-size: .68rem;
  font-family: ui-monospace, monospace;
  color: var(--text-muted);
  flex-shrink: 0;
  min-width: 34px;
}
.lec-nav-ts-title { font-size: .75rem; color: var(--text); line-height: 1.35; }
.lec-nav-ts.ts-active { background: var(--primary-light); }
.lec-nav-ts.ts-active .lec-nav-ts-title { color: var(--primary); font-weight: 600; }
.lec-nav-ts.ts-active .lec-nav-ts-time  { color: var(--primary); }

/* ── Main content ────────────────────────────────────────────────────────── */
.lec-main {
  flex: 1;
  min-width: 0;
  padding: 28px 40px 48px;
}
@media (max-width: 1399px) { .lec-main { padding: 24px 28px 48px; } }
@media (max-width: 1199px) { .lec-main { padding: 20px 20px 40px; } }

/* Breadcrumb */
.lec-breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: .78rem;
  color: var(--text-muted);
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.lec-breadcrumb a { color: var(--text-muted); transition: color var(--transition); }
.lec-breadcrumb a:hover { color: var(--primary); }
.lec-breadcrumb i { font-size: .65rem; opacity: .5; }
.lec-breadcrumb span { color: var(--text); font-weight: 500; }

/* Title block */
.lec-title-block { margin-bottom: 20px; }
.lec-h1 {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -.03em;
  line-height: 1.25;
  color: var(--text);
  margin-bottom: 0;
}
@media (max-width: 575px) { .lec-h1 { font-size: 1.3rem; } }

/* Alerts */
.lec-alert {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 14px 18px;
  border-radius: var(--radius);
  font-size: .875rem;
  line-height: 1.5;
  margin-bottom: 20px;
}
.lec-alert i { font-size: 1.1rem; flex-shrink: 0; margin-top: 1px; }
.lec-alert strong { display: block; margin-bottom: 2px; }
.lec-alert--cooldown {
  background: #fef3c7;
  border: 1px solid #fde68a;
  color: #78350f;
}
.lec-alert--cooldown i { color: #d97706; }
.lec-alert--info {
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  color: #1e40af;
}
.lec-alert--info i { color: #3b82f6; }
.lec-alert-countdown { margin-top: 6px; font-size: .8rem; font-weight: 500; }

/* Learning outcomes */
.lec-outcomes {
  background: var(--primary-light);
  border: 1px solid rgba(99,102,241,.2);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 20px;
}
.lec-outcomes-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 18px;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--primary);
  border-bottom: 1px solid rgba(99,102,241,.15);
}
.lec-outcomes-header i { font-size: 1rem; }
.lec-outcomes-list {
  list-style: none;
  padding: 12px 18px;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 7px;
}
.lec-outcomes-list li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: .875rem;
  color: var(--text);
  line-height: 1.5;
}
.lec-outcomes-list li i { color: var(--primary); font-size: .9rem; margin-top: 2px; flex-shrink: 0; }

/* Player wrap */
.lec-player-wrap {
  margin-bottom: 0;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  scroll-margin-top: 76px;
}

#blockedAlert { scroll-margin-top: 76px; }

/* Inline prev/next under video */
.lec-video-nav {
  display: flex;
  gap: 8px;
  margin-top: 10px;
  margin-bottom: 20px;
}
.lec-video-nav-btn {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  font-size: .78rem;
  font-weight: 500;
  text-decoration: none;
  transition: background var(--transition), color var(--transition), transform var(--transition);
  flex: 1;
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
}
.lec-video-nav-btn span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-width: 0;
}
.lec-video-nav-btn i { flex-shrink: 0; font-size: 1rem; }
.lec-video-nav-btn--prev {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-muted);
  justify-content: flex-start;
}
.lec-video-nav-btn--prev:hover { background: var(--surface-2); color: var(--text); }

.lec-video-nav-btn--locked {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-muted);
  opacity: .45;
  cursor: not-allowed;
  pointer-events: none;
  justify-content: flex-end;
}
.lec-video-nav-btn--active {
  background: var(--primary);
  color: #fff;
  justify-content: flex-end;
  box-shadow: 0 0 16px rgba(99,102,241,.5);
}
.lec-video-nav-btn--active:hover {
  background: var(--primary-dark);
  transform: scale(1.02);
  box-shadow: 0 0 24px rgba(99,102,241,.65);
}

/* Certificate button on last lecture */
.lec-cert-btn-wrap {
  margin-top: 16px;
  display: flex;
  justify-content: center;
}
.btn-cert-lecture {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: linear-gradient(135deg, #b8860b, #ffd700, #b8860b);
  background-size: 200% auto;
  border: none;
  color: #1a1040;
  font-weight: 700;
  font-size: 1rem;
  border-radius: var(--radius-sm);
  padding: 12px 28px;
  text-decoration: none;
  transition: background-position .4s, box-shadow var(--transition), transform var(--transition);
  box-shadow: 0 4px 20px rgba(255,215,0,.35);
}
.btn-cert-lecture i { font-size: 1.2rem; }
.btn-cert-lecture:hover {
  background-position: right center;
  box-shadow: 0 6px 28px rgba(255,215,0,.55);
  color: #1a1040;
  transform: translateY(-1px);
}
.btn-cert-lecture:active { transform: scale(.97); }

/* Transcript details */
.lec-details {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 20px;
}
.lec-details-summary {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 12px 18px;
  font-size: .82rem;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  background: var(--surface-2);
  border: none;
  border-radius: 0;
  text-align: left;
  user-select: none;
  transition: background var(--transition);
}
.lec-details-summary:hover { background: var(--border); }
.lec-details-summary i:first-child { color: var(--primary); pointer-events: none; }
.lec-details-summary .lec-details-chevron { pointer-events: none; }
.lec-details-chevron { margin-left: auto; color: var(--text-muted); font-size: .75rem; }
.lec-details-body { display: none; padding: 18px; font-size: .875rem; }
.lec-details--open .lec-details-body { display: block; }
.lec-narration-item { margin-bottom: 16px; }
.lec-narration-item:last-child { margin-bottom: 0; }
.lec-narration-label {
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .05em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 4px;
}
.lec-narration-item p { color: var(--text); line-height: 1.7; margin: 0; }

/* Section heading */
.lec-section-heading {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--text);
  margin-bottom: 12px;
}
.lec-section-heading i { color: var(--primary); font-size: 1rem; }

/* Slides section */
.lec-slides-section { margin-bottom: 24px; }

.slide-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-bottom: 6px;
  background: var(--surface);
  transition: border-color var(--transition);
}
.slide-card:hover { border-color: rgba(99,102,241,.3); }
.slide-card--title { border-color: rgba(99,102,241,.25); background: var(--primary-light); }
.slide-card--title .slide-card-header { background: var(--primary-light); }

.slide-card-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  cursor: pointer;
  user-select: none;
  background: var(--surface-2);
  transition: background var(--transition);
}
.slide-card-header:hover { background: var(--border); }
.slide-card--title .slide-card-header:hover { background: rgba(99,102,241,.1); }

.slide-card-num {
  width: 24px; height: 24px;
  border-radius: 6px;
  background: var(--border);
  color: var(--text-muted);
  font-size: .72rem;
  font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.slide-card--title .slide-card-num { background: var(--primary); color: #fff; }

.slide-card-title {
  flex: 1;
  font-size: .875rem;
  font-weight: 500;
  color: var(--text);
  line-height: 1.35;
}
.slide-card--title .slide-card-title { font-weight: 600; color: var(--primary); }

.slide-card-dur { font-size: .72rem; color: var(--text-muted); white-space: nowrap; flex-shrink: 0; }
.slide-card-chevron { font-size: .72rem; color: var(--text-muted); flex-shrink: 0; }

.slide-card-body {
  padding: 16px 18px;
  border-top: 1px solid var(--border);
}
.slide-card-body .slide-text { font-size: .9rem; line-height: 1.75; color: var(--text); }

/* Tests */
.lec-tests { margin-bottom: 24px; }
.lec-tests-body {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}
.lec-test-question { margin-bottom: 24px; padding-bottom: 24px; border-bottom: 1px solid var(--border); }
.lec-test-question:last-of-type { margin-bottom: 16px; padding-bottom: 0; border-bottom: none; }
.lec-test-q { font-size: .9rem; font-weight: 600; color: var(--text); margin-bottom: 10px; }
.lec-test-option {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  margin-bottom: 6px;
  font-size: .875rem;
  color: var(--text);
  transition: background var(--transition), border-color var(--transition);
}
.lec-test-option:hover { background: var(--surface-2); border-color: #cbd5e1; }
.lec-test-option input { flex-shrink: 0; accent-color: var(--primary); }

/* Prev / Next nav */
.lec-nav-footer {
  display: flex;
  gap: 12px;
  justify-content: space-between;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}
.lec-nav-footer-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--text);
  font-size: .82rem;
  flex: 1;
  max-width: 48%;
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
}
.lec-nav-footer-btn:hover {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99,102,241,.1);
  color: var(--text);
}
.lec-nav-footer-btn--prev { flex-direction: row; }
.lec-nav-footer-btn--next { flex-direction: row-reverse; text-align: right; }
.lec-nav-footer-btn--next div { text-align: right; }
.lec-nav-footer-btn i { font-size: 1.1rem; color: var(--text-muted); flex-shrink: 0; }
.lec-nav-footer-btn:hover i { color: var(--primary); }
.lec-nav-footer-label {
  display: block;
  font-size: .68rem;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--text-muted);
  margin-bottom: 2px;
}
.lec-nav-footer-title { display: block; font-weight: 600; line-height: 1.3; }
.lec-nav-footer-btn--disabled {
  opacity: .45;
  pointer-events: none;
}

/* ── Reflection panel ────────────────────────────────────────────────────── */
.refl-panel {
  width: 300px;
  flex-shrink: 0;
  background: var(--surface);
  border-left: 1px solid var(--border);
  height: calc(100vh - 60px);
  position: sticky;
  top: 60px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}
.refl-panel::-webkit-scrollbar { width: 4px; }
.refl-panel::-webkit-scrollbar-track { background: transparent; }
.refl-panel::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }

.refl-panel-header {
  padding: 14px 16px 12px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  position: sticky;
  top: 0;
  z-index: 2;
}
.refl-toggle-btn {
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-muted);
  width: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
  transition: color var(--transition), background var(--transition);
}
.refl-toggle-btn:hover { background: var(--surface-2); color: var(--text); }
.refl-panel--collapsed {
  width: 42px !important;
  min-width: 42px;
  overflow: hidden;
}
.refl-panel--collapsed .refl-slide-label,
.refl-panel--collapsed .refl-panel-body { display: none; }
.refl-panel--collapsed .refl-panel-title { display: none; }
.refl-panel--collapsed .refl-panel-header {
  padding: 8px 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: none;
  height: 100%;
  align-items: flex-start;
  padding-top: 14px;
}
.refl-panel-title {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .07em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 5px;
}
.refl-panel-title i { color: var(--primary); font-size: .9rem; }

.refl-slide-label {
  font-size: .8rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.3;
  min-height: 1.3em;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.refl-panel-body {
  padding: 14px 16px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* Progress */
.refl-progress {
  height: 5px;
  background: var(--border);
  border-radius: 5px;
  overflow: hidden;
}
.refl-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), #34d399);
  border-radius: 5px;
  transition: width .35s ease;
}
.refl-progress-text {
  font-size: .7rem;
  color: var(--text-muted);
  text-align: right;
  margin-top: -8px;
}

/* Fields */
.refl-field { display: flex; flex-direction: column; gap: 5px; }
.refl-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .05em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.refl-label i { font-size: .82rem; }
.refl-label:has(+ .refl-textarea:focus) { color: var(--primary); }

.refl-textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  font-size: .82rem;
  color: var(--text);
  background: var(--surface-2);
  resize: vertical;
  min-height: 70px;
  line-height: 1.55;
  font-family: inherit;
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
}
.refl-textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99,102,241,.1);
  background: var(--surface);
}
.refl-textarea::placeholder { color: #aab; }

/* Actions */
.refl-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 2px;
}
.refl-save-status {
  font-size: .72rem;
  flex: 1;
  transition: color .2s;
}
.refl-save-status--ok  { color: #16a34a; }
.refl-save-status--err { color: #dc2626; }

.refl-btn-save {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  color: var(--text);
  font-size: .78rem;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition);
}
.refl-btn-save:hover { background: var(--border); border-color: #cbd5e1; }

.refl-btn-next {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 6px 14px;
  border: none;
  border-radius: var(--radius-sm);
  background: var(--primary);
  color: #fff;
  font-size: .78rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
}
.refl-btn-next:hover   { background: var(--primary-dark); }
.refl-btn-next:active  { transform: scale(.96); }
.refl-btn-next:disabled { opacity: .5; cursor: default; }

/* Dot navigation */
.refl-dots {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 12px 16px 16px;
  border-top: 1px solid var(--border);
  background: #f1f5f9;
}
.refl-dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  border: none;
  background: #cbd5e1;
  cursor: pointer;
  padding: 0;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
}
.refl-dot:hover { background: #94a3b8; transform: scale(1.25); }
.refl-dot--filled { background: #34d399; }
.refl-dot--active { background: var(--primary); box-shadow: 0 0 0 3px rgba(99,102,241,.25); transform: scale(1.15); }
.refl-dot--active.refl-dot--filled { background: var(--primary); }

/* ── Responsive: hide sidebar on mobile, full-width main ─────────────────── */
@media (max-width: 1399px) {
  .refl-panel { width: 260px; }
}
@media (max-width: 1199px) {
  .refl-panel { display: none; }
}
@media (max-width: 991px) {
  .lec-sidebar { display: none; }
  .lec-main { padding: 16px 16px 40px; max-width: 100%; }
  .lec-nav-footer { flex-direction: column; }
  .lec-nav-footer-btn { max-width: 100%; }
  .lec-nav-footer-btn--next { flex-direction: row; text-align: left; }
  .lec-nav-footer-btn--next div { text-align: left; }
}

/* ── Badge / Gamification ─────────────────────────────────────────────────── */
.sidebar-badges {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
  margin-bottom: 12px;
}
.sidebar-badges-title {
  font-size: .875rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 14px;
}
.sidebar-badges-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}
.sidebar-badge-item {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  cursor: default;
  padding: 6px 4px;
  border-radius: 10px;
  transition: background .15s;
}
.sidebar-badge-item:hover { background: var(--surface-2); }
.sidebar-badge-icon { width: 56px; height: 56px; }
.sidebar-badge-icon svg { width: 100%; height: 100%; display: block; }
.sidebar-badge-name {
  font-size: .62rem;
  color: var(--text-muted);
  text-align: center;
  line-height: 1.2;
}
.sidebar-badge-check {
  position: absolute;
  top: 2px; right: 2px;
  font-size: .65rem;
  color: #10b981;
}
.sidebar-badge-earned .sidebar-badge-name { color: var(--text); font-weight: 600; }
.sidebar-badge-locked { opacity: 0.45; }
.sidebar-badge-earned .sidebar-badge-icon svg {
  filter: drop-shadow(0 0 6px rgba(255,200,50,.7)) drop-shadow(0 0 12px rgba(255,180,0,.4));
}
.sidebar-badges-hint {
  font-size: .75rem;
  color: var(--text-muted);
  text-align: center;
  margin: 10px 0 0;
}

/* Collection cards on index page */
.collection-card {
  border-radius: 12px;
  transition: transform .15s, box-shadow .15s;
}
.collection-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0,0,0,.12) !important;
}
.collection-description { line-height: 1.7; color: var(--text); }

/* ── Collection landing page ─────────────────────────────────────────────── */
.col-hero {
  background: #0c0f1a;
  position: relative;
  min-height: 340px;
  display: flex;
  align-items: flex-end;
  padding: 0;
  overflow: hidden;
}
.col-hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .35;
}
.col-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(12,15,26,.3) 0%, rgba(12,15,26,.85) 100%);
}
.col-hero-body {
  position: relative;
  z-index: 1;
  padding-top: 3.5rem;
  padding-bottom: 3rem;
}
.col-hero-title {
  font-size: 2.5rem;
  font-weight: 900;
  color: #fff;
  letter-spacing: -.04em;
  line-height: 1.12;
  text-shadow: 0 2px 32px rgba(0,0,0,.5);
}
.col-hero-title .accent {
  background: linear-gradient(100deg, #a5b4fc 0%, #34d399 55%, #fbbf24 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
@media (max-width: 575px) { .col-hero-title { font-size: 1.75rem; } }
.col-hero-subtitle {
  font-size: 1.1rem;
  color: rgba(255,255,255,.9);
  max-width: 580px;
  line-height: 1.6;
  font-weight: 400;
  padding: 10px 16px;
  background: rgba(255,255,255,.07);
  border-left: 3px solid #a5b4fc;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  backdrop-filter: blur(4px);
}
.col-hero-stat {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.15);
  backdrop-filter: blur(8px);
  color: rgba(255,255,255,.85);
  font-size: .82rem;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: 100px;
}
.col-hero-stat i { color: #a5b4fc; font-size: .9rem; }

/* Breadcrumb on dark hero */
.breadcrumb-hero .breadcrumb-item { color: rgba(255,255,255,.45); font-size: .82rem; }
.breadcrumb-hero .breadcrumb-item a { color: rgba(165,180,252,.8); text-decoration: none; }
.breadcrumb-hero .breadcrumb-item.active { color: rgba(255,255,255,.45); }
.breadcrumb-hero .breadcrumb-item + .breadcrumb-item::before { color: rgba(255,255,255,.25); }

/* Description */
.col-description { color: var(--text); line-height: 1.8; }
.col-description-lead {
  font-size: 1.08rem;
  font-weight: 500;
  color: var(--text);
  line-height: 1.7;
}
.col-description p { color: var(--text-muted); margin-bottom: 1rem; }
.col-description p:last-child { margin-bottom: 0; }

/* Course count badge next to section title */
.col-count-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-light);
  color: var(--primary);
  font-size: .75rem;
  font-weight: 700;
  width: 26px;
  height: 26px;
  border-radius: 100px;
  vertical-align: middle;
  margin-left: 8px;
  position: relative;
  top: -2px;
}

/* Course number label */
.col-course-num {
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--primary);
}

/* Badges on course image */
.col-course-badge-enrolled,
.col-course-badge-free {
  position: absolute;
  top: 10px;
  left: 10px;
  font-size: .72rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 100px;
}
.col-course-badge-enrolled {
  background: #10b981;
  color: #fff;
}
.col-course-badge-free {
  background: #06b6d4;
  color: #fff;
}

/* Sidebar */
.col-sidebar { position: sticky; top: 80px; }
.col-sidebar-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
}
.col-sidebar-title {
  font-size: .9rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: .9rem;
  letter-spacing: -.01em;
}

/* CTA card */
.col-cta-card {
  background: linear-gradient(135deg, #312e81 0%, #1e1b4b 100%);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  color: #fff;
  border: 1px solid rgba(165,180,252,.2);
}
.col-cta-card .text-muted { color: rgba(255,255,255,.6) !important; }
.col-cta-card .btn-outline-secondary {
  border-color: rgba(255,255,255,.2);
  color: rgba(255,255,255,.7);
}
.col-cta-card .btn-outline-secondary:hover {
  background: rgba(255,255,255,.1);
  color: #fff;
}
.col-cta-icon {
  width: 48px; height: 48px;
  background: rgba(165,180,252,.15);
  border: 1px solid rgba(165,180,252,.25);
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
  color: #a5b4fc;
}
.col-cta-stats {
  display: flex;
  gap: 1.5rem;
}
.col-cta-stat-num {
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: -.04em;
  color: #e0e7ff;
  line-height: 1;
}
.col-cta-stat-label {
  font-size: .7rem;
  color: rgba(255,255,255,.5);
  text-transform: uppercase;
  letter-spacing: .07em;
  margin-top: 2px;
}

/* Checklist */
.col-checklist {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: .55rem;
}
.col-checklist li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: .875rem;
  color: var(--text-muted);
  line-height: 1.45;
}
.col-checklist li i {
  color: var(--success);
  font-size: .85rem;
  flex-shrink: 0;
  margin-top: 2px;
}
.col-checklist li i.bi-person {
  color: var(--primary);
}

/* Collection cards on index */
.collection-card {
  border-radius: var(--radius-lg) !important;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  border: 1px solid var(--border) !important;
}
.collection-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg) !important;
  border-color: rgba(99,102,241,.25) !important;
}
.collection-description { line-height: 1.75; color: var(--text); }

/* ── Collection cards on index (redesigned) ──────────────────────────────── */
.collection-card {
  border-radius: var(--radius-lg) !important;
  transition: transform var(--transition), box-shadow var(--transition);
}
.collection-card:hover { transform: translateY(-4px); }
.collection-card:hover .collection-card-inner {
  box-shadow: var(--shadow-lg);
  border-color: rgba(165,180,252,.4);
}
.collection-card:hover .collection-card-arrow {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.collection-card-inner {
  background: linear-gradient(145deg, #1e1b4b 0%, #312e81 50%, #1e1b4b 100%);
  border: 1px solid rgba(165,180,252,.15);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: .75rem;
  min-height: 180px;
  transition: box-shadow var(--transition), border-color var(--transition);
}
.collection-card-icon {
  width: 40px; height: 40px;
  background: rgba(165,180,252,.15);
  border: 1px solid rgba(165,180,252,.2);
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  color: #a5b4fc;
  font-size: 1.1rem;
  flex-shrink: 0;
}
.collection-card-title {
  font-size: 1rem;
  font-weight: 700;
  color: #e0e7ff;
  letter-spacing: -.01em;
  line-height: 1.35;
  margin: 0;
}
.col-card-accent {
  background: linear-gradient(100deg, #a5b4fc 0%, #34d399 60%, #fbbf24 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.collection-card-sub {
  font-size: .82rem;
  color: rgba(255,255,255,.55);
  line-height: 1.45;
  margin: 0;
}
.collection-card-count {
  font-size: .78rem;
  color: rgba(255,255,255,.45);
  display: flex;
  align-items: center;
}
.collection-card-arrow {
  width: 28px; height: 28px;
  border: 1px solid rgba(165,180,252,.25);
  border-radius: 100px;
  display: flex; align-items: center; justify-content: center;
  color: #a5b4fc;
  font-size: .8rem;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
  flex-shrink: 0;
}

/* ── All-courses page hero ───────────────────────────────────────────────── */
.all-courses-hero {
  background: linear-gradient(135deg, #0c0f1a 0%, #1e1b4b 50%, #0c0f1a 100%);
  position: relative;
  overflow: hidden;
}
.all-courses-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 70% 50%, rgba(99,102,241,.18) 0%, transparent 65%);
}
.all-courses-hero-body {
  position: relative;
  z-index: 1;
  padding-top: 3rem;
  padding-bottom: 3rem;
}
.all-courses-title {
  font-size: 2.5rem;
  font-weight: 900;
  color: #fff;
  letter-spacing: -.04em;
  line-height: 1.12;
  text-shadow: 0 2px 32px rgba(0,0,0,.4);
}
@media (max-width: 575px) { .all-courses-title { font-size: 1.75rem; } }
.all-courses-subtitle {
  font-size: 1.1rem;
  color: rgba(255,255,255,.7);
  max-width: 480px;
}

/* ── Bundle pricing block ────────────────────────────────────────────────── */
.bundle-price-block { border-top: 1px solid rgba(255,255,255,.1); padding-top: 1rem; }
.bundle-discount-badge {
  display: inline-flex;
  align-items: center;
  background: linear-gradient(100deg, #f59e0b, #ef4444);
  color: #fff;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .04em;
  padding: 3px 10px;
  border-radius: 100px;
}
.bundle-price-new {
  font-size: 1.9rem;
  font-weight: 900;
  color: #fff;
  letter-spacing: -.04em;
  line-height: 1;
}
.bundle-price-old {
  font-size: 1rem;
  color: rgba(255,255,255,.4);
  text-decoration: line-through;
}
.bundle-savings {
  font-size: .78rem;
  color: #34d399;
  font-weight: 600;
  margin-top: 3px;
}

/* ── Sidebar: Collections block ──────────────────────────────────────────── */
.sidebar-collections {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 1rem;
}
.sidebar-collections-title {
  font-size: .8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--text-muted);
  padding: .85rem 1rem .6rem;
  border-bottom: 1px solid var(--border);
}
.sidebar-collection-item {
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: .7rem 1rem;
  text-decoration: none;
  color: var(--text);
  border-bottom: 1px solid var(--border);
  transition: background .15s;
}
.sidebar-collection-item:last-child { border-bottom: none; }
.sidebar-collection-item:hover { background: var(--primary-light); color: var(--primary); }
.sidebar-collection-icon {
  width: 34px; height: 34px; flex-shrink: 0;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--primary) 0%, #818cf8 100%);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: .95rem;
}
.sidebar-collection-body { flex: 1; min-width: 0; }
.sidebar-collection-name {
  font-size: .875rem;
  font-weight: 600;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.sidebar-collection-meta {
  font-size: .75rem;
  color: var(--text-muted);
  margin-top: 1px;
}
.sidebar-collection-price { color: var(--primary); font-weight: 600; }
.sidebar-collection-arrow {
  font-size: .8rem;
  color: var(--text-muted);
  flex-shrink: 0;
  transition: transform .15s;
}
.sidebar-collection-item:hover .sidebar-collection-arrow { transform: translateX(3px); }

/* ── Why-us feature strip ────────────────────────────────────────────────── */
.why-us-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
}
.why-us-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.1rem 1.2rem;
  transition: box-shadow .2s;
}
.why-us-item:hover { box-shadow: var(--shadow-lg); }
.why-us-icon {
  width: 44px; height: 44px; flex-shrink: 0;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; color: #fff;
}
.why-us-title {
  font-size: .9rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: .25rem;
  line-height: 1.3;
}
.why-us-sub {
  font-size: .78rem;
  color: var(--text-muted);
  line-height: 1.5;
}