/* ============================================================
   main.css  –  PTS Learning Platform
   Aesthetic: Refined utility-dark — slate sidebar, crisp white content
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Sora:wght@400;500;600;700&family=DM+Sans:ital,wght@0,300;0,400;0,500;1,400&display=swap');

/* ── Variables ─────────────────────────────────────────────── */
:root {
  --sidebar-w: 260px;
  --sidebar-bg: #0f1923;
  --sidebar-hover: #1a2a3a;
  --sidebar-active: #1e3a5f;
  --sidebar-border: rgba(255,255,255,0.06);
  --accent: #3b9eff;
  --accent-glow: rgba(59,158,255,0.18);

  --content-bg: #f4f6f9;
  --card-bg: #ffffff;
  --card-shadow: 0 2px 12px rgba(0,0,0,0.07);
  --card-radius: 12px;

  --text-primary: #0f1923;
  --text-secondary: #5a6a7a;
  --text-sidebar: #c8d6e5;
  --text-sidebar-dim: #6b7f94;

  --success: #22c55e;
  --warning: #f59e0b;
  --danger:  #ef4444;
  --info:    #3b9eff;

  --font-display: 'Sora', sans-serif;
  --font-body:    'DM Sans', sans-serif;

  --transition: 0.22s ease;
}

/* ── Reset / Base ───────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  height: 100%;
  font-family: var(--font-body);
  background: var(--content-bg);
  color: var(--text-primary);
  font-size: 15px;
  line-height: 1.6;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* ── Layout Shell ───────────────────────────────────────────── */
.pts-shell {
  display: flex;
  min-height: 100vh;
}

/* ── SIDEBAR ────────────────────────────────────────────────── */
.pts-sidebar {
  width: var(--sidebar-w);
  background: var(--sidebar-bg);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0;
  height: 100vh;
  z-index: 100;
  overflow-y: auto;
  overflow-x: hidden;
  scrollbar-width: thin;
  scrollbar-color: #1e3a5f transparent;
  transition: transform var(--transition);
}

/* Logo / Brand */
.pts-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 22px 22px 18px;
  border-bottom: 1px solid var(--sidebar-border);
}

.pts-brand-icon {
  width: 38px; height: 38px;
  background: var(--accent);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
  color: #fff;
  flex-shrink: 0;
  box-shadow: 0 0 16px var(--accent-glow);
}

.pts-brand-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  color: #fff;
  letter-spacing: -0.01em;
}

.pts-brand-sub {
  font-size: 0.7rem;
  color: var(--text-sidebar-dim);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* User pill */
.pts-user-pill {
  margin: 14px 16px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--sidebar-border);
  border-radius: 10px;
  padding: 10px 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.pts-avatar {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, #3b9eff 0%, #0a5fa8 100%);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.85rem;
  color: #fff;
  flex-shrink: 0;
}

.pts-user-info { overflow: hidden; }

.pts-user-name {
  font-weight: 600;
  font-size: 0.85rem;
  color: #fff;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.pts-user-role {
  font-size: 0.7rem;
  color: var(--text-sidebar-dim);
}

/* Nav sections */
.pts-nav { padding: 8px 0; flex: 1; }

.pts-nav-section {
  margin-bottom: 4px;
}

.pts-nav-label {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-sidebar-dim);
  padding: 12px 22px 4px;
}

.pts-nav-item {
  position: relative;
}

.pts-nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 22px;
  color: var(--text-sidebar);
  font-size: 0.88rem;
  font-weight: 500;
  border-radius: 0;
  transition: background var(--transition), color var(--transition);
  cursor: pointer;
  position: relative;
}

.pts-nav-link:hover {
  background: var(--sidebar-hover);
  color: #fff;
}

.pts-nav-link.active {
  background: var(--sidebar-active);
  color: #fff;
}

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

.pts-nav-icon {
  width: 20px;
  text-align: center;
  font-size: 0.9rem;
  opacity: 0.8;
  flex-shrink: 0;
}

.pts-nav-link:hover .pts-nav-icon,
.pts-nav-link.active .pts-nav-icon { opacity: 1; }

/* Arrow for expandable items */
.pts-nav-arrow {
  margin-left: auto;
  font-size: 0.7rem;
  opacity: 0.5;
  transition: transform var(--transition);
}

.pts-nav-item.open .pts-nav-arrow {
  transform: rotate(90deg);
}

/* Sub-nav (dropdown children) */
.pts-subnav {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.28s ease;
  background: rgba(0,0,0,0.15);
}

.pts-nav-item.open .pts-subnav {
  max-height: 300px;
}

.pts-subnav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 22px 8px 50px;
  font-size: 0.83rem;
  color: var(--text-sidebar-dim);
  transition: color var(--transition), background var(--transition);
}

.pts-subnav a:hover {
  color: #fff;
  background: var(--sidebar-hover);
}

/* Taller max-height for course lists (can be many items) */
.pts-subnav.pts-subnav-courses { max-height: 0; }
.pts-nav-item.open .pts-subnav.pts-subnav-courses { max-height: 1200px; }

/* Active course highlight */
.pts-subnav a.pts-subnav-active {
  color: #fff;
  background: var(--sidebar-active);
  border-left: 3px solid var(--accent);
  padding-left: 47px;
}

/* Locked private course — dimmed */
.pts-subnav a.pts-subnav-locked {
  opacity: 0.55;
}

/* Sidebar footer */
.pts-sidebar-footer {
  border-top: 1px solid var(--sidebar-border);
  padding: 14px 16px;
}

.pts-logout-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 9px 14px;
  background: rgba(239,68,68,0.1);
  border: 1px solid rgba(239,68,68,0.2);
  border-radius: 8px;
  color: #fc8181;
  font-size: 0.84rem;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--transition);
}

.pts-logout-btn:hover {
  background: rgba(239,68,68,0.2);
  color: #fff;
}

/* ── MAIN CONTENT ───────────────────────────────────────────── */
.pts-main {
  margin-left: var(--sidebar-w);
  flex: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Top strip inside main (breadcrumb/page title bar) */
.pts-topbar {
  background: var(--card-bg);
  border-bottom: 1px solid #e4e9f0;
  padding: 14px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: 0 1px 6px rgba(0,0,0,0.05);
}

.pts-page-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  color: var(--text-primary);
}

.pts-topbar-right {
  display: flex;
  align-items: center;
  gap: 14px;
}

.pts-hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  color: var(--text-primary);
  font-size: 1.2rem;
}

/* ── PAGE BODY ──────────────────────────────────────────────── */
.pts-page-body {
  padding: 24px 28px;
  flex: 1;
}

.pts-row {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.pts-col-5 { flex: 0 0 calc(41.66% - 12px); min-width: 280px; }
.pts-col-7 { flex: 0 0 calc(58.33% - 12px); min-width: 300px; }

/* ── Cards ──────────────────────────────────────────────────── */
.pts-card {
  background: var(--card-bg);
  border-radius: var(--card-radius);
  box-shadow: var(--card-shadow);
  padding: 20px;
  margin-bottom: 20px;
}

.pts-card-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 14px;
  color: var(--text-primary);
}

/* ── Tabs ───────────────────────────────────────────────────── */
.pts-tabs {
  display: flex;
  gap: 0;
  border-bottom: 2px solid #e4e9f0;
  margin-bottom: 0;
}

.pts-tab {
  padding: 10px 22px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: color var(--transition), border-color var(--transition);
  white-space: nowrap;
}

.pts-tab:hover { color: var(--accent); }

.pts-tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
  font-weight: 600;
}

.pts-tab-content { display: none; padding: 18px 0; }
.pts-tab-content.active { display: block; }

/* ── Progress bars ──────────────────────────────────────────── */
.pts-course-item {
  margin-bottom: 16px;
}

.pts-course-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}

.pts-course-name {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-primary);
}

.pts-course-pct {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.pts-progress-track {
  height: 7px;
  background: #e4e9f0;
  border-radius: 99px;
  overflow: hidden;
}

.pts-progress-fill {
  height: 100%;
  border-radius: 99px;
  transition: width 0.6s cubic-bezier(0.25,1,0.5,1);
}

.pts-progress-fill.success { background: var(--success); }
.pts-progress-fill.warning { background: var(--warning); }
.pts-progress-fill.danger  { background: var(--danger);  }

.pts-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 99px;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.pts-badge.success { background: rgba(34,197,94,0.12);  color: #16a34a; }
.pts-badge.warning { background: rgba(245,158,11,0.12); color: #b45309; }
.pts-badge.danger  { background: rgba(239,68,68,0.12);  color: #dc2626; }

/* Clickable course rows */
.pts-course-link {
  display: block;
  text-decoration: none;
  color: inherit;
  border-radius: 8px;
  padding: 10px 12px;
  margin: 0 -12px;
  transition: background var(--transition), box-shadow var(--transition);
}

.pts-course-link:hover {
  background: #f0f6ff;
  box-shadow: inset 3px 0 0 var(--accent);
}

.pts-course-link:hover .pts-course-name {
  color: var(--accent);
}

.pts-course-arrow {
  color: var(--text-secondary);
  font-size: 0.85rem;
  opacity: 0;
  transition: opacity var(--transition), transform var(--transition);
}

.pts-course-link:hover .pts-course-arrow {
  opacity: 1;
  transform: translateX(3px);
}

/* ── Column helpers ─────────────────────────────────────────── */
.pts-col-9 { flex: 0 0 calc(75% - 12px); min-width: 280px; }
.pts-col-3 { flex: 0 0 calc(25% - 12px); min-width: 200px; }

/* ── Breadcrumb / page header ───────────────────────────────── */
.pts-page-header {
  margin-bottom: 20px;
}

.pts-page-header-label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.pts-page-header-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.4rem;
  color: var(--text-primary);
}

/* ── Accordion ──────────────────────────────────────────────── */
.pts-accordion { display: flex; flex-direction: column; gap: 10px; }

.pts-accordion-item {
  background: var(--card-bg);
  border-radius: var(--card-radius);
  box-shadow: var(--card-shadow);
  overflow: hidden;
  border: 1px solid #e4e9f0;
}

.pts-accordion-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  cursor: pointer;
  user-select: none;
  transition: background var(--transition);
}

.pts-accordion-header:hover { background: #f8faff; }

.pts-accordion-item.open .pts-accordion-header {
  background: #f0f6ff;
  border-bottom: 1px solid #deeaff;
}

.pts-accordion-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--text-primary);
}

.pts-accordion-item.open .pts-accordion-title { color: var(--accent); }

.pts-accordion-chevron {
  font-size: 0.8rem;
  color: var(--text-secondary);
  transition: transform var(--transition);
}

.pts-accordion-item.open .pts-accordion-chevron { transform: rotate(90deg); }

.pts-accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.pts-accordion-item.open .pts-accordion-body { max-height: 2000px; }

/* ── Quiz list ──────────────────────────────────────────────── */
.pts-quiz-list { list-style: none; padding: 0; margin: 0; }

.pts-quiz-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 18px;
  border-bottom: 1px solid #f0f2f5;
  transition: background var(--transition);
}

.pts-quiz-item:last-child { border-bottom: none; }
.pts-quiz-item:hover { background: #f8faff; }
.pts-quiz-item.passed { background: rgba(34,197,94,0.04); }
.pts-quiz-item.passed:hover { background: rgba(34,197,94,0.08); }

.pts-quiz-num {
  width: 26px; height: 26px;
  border-radius: 50%;
  background: #e4e9f0;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text-secondary);
  flex-shrink: 0;
}

.pts-quiz-item.passed .pts-quiz-num {
  background: rgba(34,197,94,0.15);
  color: #16a34a;
}

.pts-quiz-link {
  flex: 1;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
  transition: color var(--transition);
}

.pts-quiz-item:hover .pts-quiz-link { color: var(--accent); }

.pts-quiz-check {
  color: var(--success);
  font-size: 0.95rem;
  flex-shrink: 0;
}

.pts-quiz-meta {
  font-size: 0.72rem;
  color: var(--text-secondary);
  background: #f0f2f5;
  border-radius: 4px;
  padding: 1px 6px;
}

/* ── Circle progress widget ─────────────────────────────────── */
.pts-progress-widget {
  background: var(--card-bg);
  border-radius: var(--card-radius);
  box-shadow: var(--card-shadow);
  padding: 24px 20px;
  text-align: center;
  position: sticky;
  top: 80px;
}

.pts-progress-widget-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.pts-circle-wrap {
  display: flex;
  justify-content: center;
  margin-bottom: 16px;
}

.pts-circle-wrap svg { overflow: visible; }

.pts-progress-status {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  margin-top: 4px;
}

.pts-progress-status.success { color: var(--success); }
.pts-progress-status.warning { color: var(--warning); }
.pts-progress-status.danger  { color: var(--danger);  }
.pts-progress-status.primary { color: var(--accent);  }

.pts-progress-stats {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid #e4e9f0;
}

.pts-stat-item { text-align: center; }

.pts-stat-value {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--text-primary);
}

.pts-stat-label {
  font-size: 0.7rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ── Quiz page: tab bar ─────────────────────────────────────── */
.pts-quiz-tabs {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
  padding: 16px 20px 0;
  border-bottom: 2px solid #e4e9f0;
  background: var(--card-bg);
  border-radius: var(--card-radius) var(--card-radius) 0 0;
}

.pts-quiz-tab-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 18px;
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition);
  white-space: nowrap;
}

.pts-quiz-tab-btn:hover { color: var(--accent); }

.pts-quiz-tab-btn.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
  font-weight: 600;
}

.pts-quiz-tab-btn i { font-size: 0.82rem; }

/* ── Quiz page: tab panels ──────────────────────────────────── */
.pts-quiz-panel {
  display: none;
  background: var(--card-bg);
  border-radius: 0 0 var(--card-radius) var(--card-radius);
  box-shadow: var(--card-shadow);
  padding: 24px;
}

.pts-quiz-panel.active { display: block; }

/* ── Lesson header card ─────────────────────────────────────── */
.pts-lesson-header {
  background: var(--card-bg);
  border-radius: var(--card-radius);
  box-shadow: var(--card-shadow);
  padding: 18px 22px;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.pts-lesson-label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 3px;
}

.pts-lesson-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.pts-lesson-passed-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: rgba(34,197,94,0.12);
  color: #16a34a;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 99px;
}

/* ── Description panel ──────────────────────────────────────── */
.pts-description-body {
  font-size: 0.925rem;
  line-height: 1.8;
  color: var(--text-primary);
}

.pts-description-body h1,
.pts-description-body h2,
.pts-description-body h3 {
  font-family: var(--font-display);
  font-weight: 600;
  margin: 20px 0 10px;
  color: var(--text-primary);
}

.pts-description-body p  { margin-bottom: 12px; }
.pts-description-body ul,
.pts-description-body ol { padding-left: 20px; margin-bottom: 12px; }
.pts-description-body li { margin-bottom: 4px; }

.pts-description-body pre {
  background: #1a2332;
  border-radius: 8px;
  padding: 16px;
  overflow-x: auto;
  margin: 14px 0;
}

.pts-description-body code {
  font-family: 'Fira Code', 'Consolas', monospace;
  font-size: 0.85rem;
}

.pts-description-body :not(pre) > code {
  background: #f0f2f5;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.82rem;
  color: #c0392b;
}

/* ── Video panel ────────────────────────────────────────────── */
.pts-video-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 10px 0;
}

.pts-yt-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: #ff0000;
  color: #fff;
  padding: 11px 22px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.9rem;
  transition: background var(--transition);
}

.pts-yt-link:hover { background: #cc0000; color: #fff; }

/* ── Mark as completed toggle ───────────────────────────────── */
.pts-toggle-row {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 0;
  border-top: 1px solid #e4e9f0;
  margin-top: 20px;
}

.pts-toggle-label-text {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
}

/* iOS-style toggle */
.pts-slide-toggle { position: relative; display: inline-block; width: 46px; height: 26px; }
.pts-slide-toggle input { opacity: 0; width: 0; height: 0; }
.pts-slider {
  position: absolute; inset: 0;
  background: #d1d5db;
  border-radius: 99px;
  cursor: pointer;
  transition: background 0.25s;
}
.pts-slider::before {
  content: '';
  position: absolute;
  width: 20px; height: 20px;
  left: 3px; bottom: 3px;
  background: #fff;
  border-radius: 50%;
  transition: transform 0.25s;
  box-shadow: 0 1px 4px rgba(0,0,0,0.2);
}
.pts-slide-toggle input:checked + .pts-slider { background: var(--success); }
.pts-slide-toggle input:checked + .pts-slider::before { transform: translateX(20px); }

.pts-toggle-status {
  font-size: 0.83rem;
  font-weight: 600;
  color: var(--text-secondary);
  min-width: 100px;
}

.pts-toggle-status.completed { color: var(--success); }

/* ── Prev / Next navigation ─────────────────────────────────── */
.pts-quiz-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid #e4e9f0;
  flex-wrap: wrap;
}

.pts-nav-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  border: 1px solid #e4e9f0;
  background: var(--card-bg);
  color: var(--text-primary);
  transition: all var(--transition);
  max-width: 240px;
  text-decoration: none;
}

.pts-nav-btn:hover:not(.disabled) {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.pts-nav-btn.disabled {
  opacity: 0.4;
  pointer-events: none;
}

.pts-nav-btn-label {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ── Quiz program (quizprogram.php) ─────────────────────────── */

/* Progress bar across top of quiz */
.pts-qprog-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  gap: 12px;
}

.pts-qprog-counter {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--text-secondary);
  white-space: nowrap;
}

.pts-qprog-bar-track {
  flex: 1;
  height: 6px;
  background: #e4e9f0;
  border-radius: 99px;
  overflow: hidden;
}

.pts-qprog-bar-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 99px;
  transition: width 0.4s ease;
}

/* Question text */
.pts-question-text {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-primary);
  line-height: 1.65;
  margin-bottom: 18px;
}

/* Code block inside question */
.pts-question-code {
  margin-bottom: 18px;
}

/* Answer options */
.pts-answer-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 20px;
}

.pts-answer-label {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 13px 16px;
  border: 2px solid #e4e9f0;
  border-radius: 10px;
  cursor: pointer;
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--text-primary);
  transition: border-color var(--transition), background var(--transition);
  position: relative;
}

.pts-answer-label:hover:not(.pts-answer-disabled) {
  border-color: var(--accent);
  background: #f0f6ff;
}

.pts-answer-label input[type="radio"] {
  margin-top: 2px;
  accent-color: var(--accent);
  flex-shrink: 0;
}

.pts-answer-label.pts-correct {
  border-color: var(--success);
  background: rgba(34,197,94,0.08);
  color: #15803d;
  font-weight: 500;
}

.pts-answer-label.pts-incorrect {
  border-color: var(--danger);
  background: rgba(239,68,68,0.07);
  color: #b91c1c;
}

.pts-answer-label.pts-disabled { cursor: default; }

/* Feedback message */
.pts-feedback {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 18px;
}

.pts-feedback.correct {
  background: rgba(34,197,94,0.1);
  color: #15803d;
  border: 1px solid rgba(34,197,94,0.25);
}

.pts-feedback.incorrect {
  background: rgba(239,68,68,0.08);
  color: #b91c1c;
  border: 1px solid rgba(239,68,68,0.2);
}

/* Action buttons */
.pts-quiz-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.pts-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: 8px;
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: background var(--transition), transform 0.1s;
  text-decoration: none;
}

.pts-btn:active { transform: scale(0.98); }

.pts-btn-primary {
  background: var(--accent);
  color: #fff;
}

.pts-btn-primary:hover { background: #2080e0; color: #fff; }

.pts-btn-success {
  background: var(--success);
  color: #fff;
}

.pts-btn-success:hover { background: #16a34a; color: #fff; }

.pts-btn-outline {
  background: transparent;
  color: var(--accent);
  border: 2px solid var(--accent);
}

.pts-btn-outline:hover { background: var(--accent); color: #fff; }

/* ── Results table ───────────────────────────────────────────── */
.pts-results-wrap { margin-top: 8px; }

.pts-results-summary {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.pts-result-stat {
  flex: 1;
  min-width: 120px;
  background: var(--card-bg);
  border: 1px solid #e4e9f0;
  border-radius: 10px;
  padding: 16px;
  text-align: center;
}

.pts-result-stat-value {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.6rem;
  color: var(--text-primary);
}

.pts-result-stat-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  margin-top: 2px;
}

.pts-result-verdict {
  padding: 14px 20px;
  border-radius: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.pts-result-verdict.passed {
  background: rgba(34,197,94,0.1);
  color: #15803d;
  border: 1px solid rgba(34,197,94,0.25);
}

.pts-result-verdict.failed {
  background: rgba(239,68,68,0.08);
  color: #b91c1c;
  border: 1px solid rgba(239,68,68,0.2);
}

.pts-results-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.pts-results-table th {
  background: var(--sidebar-bg);
  color: #fff;
  padding: 10px 14px;
  text-align: left;
  font-family: var(--font-display);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  font-weight: 600;
}

.pts-results-table th:first-child { border-radius: 8px 0 0 0; }
.pts-results-table th:last-child  { border-radius: 0 8px 0 0; text-align: center; }

.pts-results-table td {
  padding: 10px 14px;
  border-bottom: 1px solid #f0f2f5;
  vertical-align: top;
}

.pts-results-table tr:last-child td { border-bottom: none; }
.pts-results-table tr:nth-child(even) td { background: #fafbfc; }

.pts-results-table td:last-child { text-align: center; }

.pts-result-correct { color: #15803d; font-weight: 600; }
.pts-result-wrong   { color: #b91c1c; font-weight: 600; }

/* ── Interview Questions page ───────────────────────────────── */

/* Progress banner */
.pts-iq-progress {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  background: var(--card-bg);
  border-radius: var(--card-radius);
  box-shadow: var(--card-shadow);
  padding: 16px 22px;
  margin-bottom: 20px;
}

.pts-iq-stat {
  text-align: center;
}

.pts-iq-stat-value {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.4rem;
  color: var(--text-primary);
}

.pts-iq-stat-label {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
}

.pts-iq-progress-bar-wrap {
  flex: 1;
  min-width: 160px;
}

.pts-iq-progress-bar-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 5px;
}

/* Filter bar */
.pts-iq-filter {
  background: var(--card-bg);
  border-radius: var(--card-radius);
  box-shadow: var(--card-shadow);
  padding: 16px 22px;
  margin-bottom: 20px;
}

.pts-iq-filter-title {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.pts-iq-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}

.pts-iq-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 99px;
  border: 2px solid #e4e9f0;
  background: #f8faff;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition);
  user-select: none;
}

.pts-iq-chip input[type="checkbox"] {
  display: none;
}

.pts-iq-chip:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: #eef5ff;
}

.pts-iq-chip.checked {
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
}

/* Question card */
.pts-iq-card {
  background: var(--card-bg);
  border-radius: var(--card-radius);
  box-shadow: var(--card-shadow);
  overflow: hidden;
  margin-bottom: 20px;
}

.pts-iq-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 22px;
  background: var(--sidebar-bg);
  color: #fff;
}

.pts-iq-card-label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-sidebar-dim);
}

.pts-iq-card-counter {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.9rem;
  color: #fff;
}

.pts-iq-card-body {
  padding: 24px;
}

.pts-iq-question {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.6;
  margin-bottom: 20px;
}

/* What to say / not say */
.pts-iq-hint {
  border-radius: 10px;
  padding: 14px 18px;
  margin-bottom: 14px;
  font-size: 0.9rem;
  line-height: 1.7;
}

.pts-iq-hint-label {
  font-weight: 700;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 6px;
}

.pts-iq-hint.say {
  background: rgba(34,197,94,0.08);
  border: 1px solid rgba(34,197,94,0.2);
  color: #14532d;
}

.pts-iq-hint.say .pts-iq-hint-label { color: #15803d; }

.pts-iq-hint.not-say {
  background: rgba(239,68,68,0.06);
  border: 1px solid rgba(239,68,68,0.18);
  color: #7f1d1d;
}

.pts-iq-hint.not-say .pts-iq-hint-label { color: #b91c1c; }

/* Mastered button */
.pts-mastered-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: var(--success);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), transform 0.1s;
  margin-top: 16px;
}

.pts-mastered-btn:hover  { background: #16a34a; }
.pts-mastered-btn:active { transform: scale(0.97); }
.pts-mastered-btn:disabled,
.pts-mastered-btn.done {
  background: #d1fae5;
  color: #15803d;
  cursor: default;
}

.pts-mastered-msg {
  display: none;
  margin-top: 10px;
  font-size: 0.83rem;
  font-weight: 500;
  color: var(--success);
}

.pts-login-hint {
  margin-top: 14px;
  padding: 10px 14px;
  background: rgba(59,158,255,0.07);
  border: 1px solid rgba(59,158,255,0.2);
  border-radius: 8px;
  font-size: 0.83rem;
  color: var(--text-secondary);
}

/* Prev / Next navigation (reuses pts-quiz-nav) */
.pts-iq-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding-top: 4px;
}

.pts-iq-nav-pos {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  white-space: nowrap;
}

/* ── Core Keywords / Cheat Sheet page ──────────────────────── */

.pts-keyword-shell {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - 130px); /* center vertically under topbar */
  padding: 20px;
}

.pts-keyword-card {
  width: 100%;
  max-width: 680px;
  background: var(--card-bg);
  border-radius: 20px;
  box-shadow: 0 8px 40px rgba(0,0,0,0.10);
  overflow: hidden;
  position: relative;
}

/* Decorative top stripe */
.pts-keyword-card::before {
  content: '';
  display: block;
  height: 5px;
  background: linear-gradient(90deg, var(--accent) 0%, #7dd3fc 100%);
}

.pts-keyword-card-inner {
  padding: 48px 44px 36px;
  text-align: center;
}

/* Counter badge */
.pts-keyword-counter {
  display: inline-block;
  background: #f0f6ff;
  color: var(--accent);
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 4px 14px;
  border-radius: 99px;
  margin-bottom: 28px;
}

/* Keyword heading */
.pts-keyword-word {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  color: var(--text-primary);
  line-height: 1.25;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

/* Divider */
.pts-keyword-divider {
  width: 48px;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), #7dd3fc);
  border-radius: 99px;
  margin: 0 auto 24px;
}

/* Definition */
.pts-keyword-def {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--text-secondary);
  max-width: 520px;
  margin: 0 auto 36px;
}

/* Navigation buttons */
.pts-keyword-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 16px;
  padding: 0 44px 36px;
}

.pts-keyword-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 26px;
  border-radius: 10px;
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 600;
  border: 2px solid var(--accent);
  color: var(--accent);
  background: transparent;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition);
}

.pts-keyword-btn:hover:not(.pts-keyword-btn-disabled) {
  background: var(--accent);
  color: #fff;
}

.pts-keyword-btn-disabled {
  opacity: 0.3;
  pointer-events: none;
}

/* Progress dots */
.pts-keyword-progress {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 6px;
  padding-bottom: 28px;
}

.pts-keyword-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: #e4e9f0;
  transition: background var(--transition), transform var(--transition);
}

.pts-keyword-dot.active {
  background: var(--accent);
  transform: scale(1.4);
}

/* ── Certificates page ──────────────────────────────────────── */

/* Search bar */
.pts-cert-search {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.pts-cert-search-input {
  flex: 1;
  min-width: 200px;
  padding: 9px 14px;
  border: 2px solid #e4e9f0;
  border-radius: 8px;
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: var(--text-primary);
  background: #fff;
  transition: border-color var(--transition);
  outline: none;
}

.pts-cert-search-input:focus { border-color: var(--accent); }

.pts-cert-search-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 20px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition);
  white-space: nowrap;
}

.pts-cert-search-btn:hover { background: #2080e0; }

/* Certificate table */
.pts-cert-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.pts-cert-table th {
  background: var(--sidebar-bg);
  color: #fff;
  padding: 11px 16px;
  text-align: left;
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.pts-cert-table th:first-child { border-radius: 8px 0 0 0; }
.pts-cert-table th:last-child  { border-radius: 0 8px 0 0; width: 140px; text-align: center; }

.pts-cert-table td {
  padding: 12px 16px;
  border-bottom: 1px solid #f0f2f5;
  color: var(--text-primary);
  vertical-align: middle;
}

.pts-cert-table tr:last-child td { border-bottom: none; }

.pts-cert-table tr:hover td { background: #f8faff; }

.pts-cert-table td:last-child { text-align: center; }

.pts-cert-empty {
  padding: 40px;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* View certificate button */
.pts-cert-view-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: rgba(34,197,94,0.1);
  color: #15803d;
  border: 1px solid rgba(34,197,94,0.25);
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  transition: all var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.pts-cert-view-btn:hover {
  background: var(--success);
  color: #fff;
  border-color: var(--success);
}

/* Pagination */
.pts-pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 6px;
  margin-top: 20px;
  flex-wrap: wrap;
}

.pts-page-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 10px;
  border-radius: 8px;
  font-size: 0.83rem;
  font-weight: 600;
  border: 2px solid #e4e9f0;
  color: var(--text-secondary);
  background: var(--card-bg);
  text-decoration: none;
  transition: all var(--transition);
}

.pts-page-btn:hover:not(.active):not(.disabled) {
  border-color: var(--accent);
  color: var(--accent);
}

.pts-page-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.pts-page-btn.disabled {
  opacity: 0.35;
  pointer-events: none;
}

/* ── Certificate page ───────────────────────────────────────── */

.pts-cert-page-row {
  display: flex;
  gap: 24px;
  align-items: flex-start;
  flex-wrap: wrap;
}

.pts-cert-preview-col { flex: 1; min-width: 300px; }

.pts-cert-actions-col {
  flex: 0 0 220px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* The certificate itself */
.pts-cert-canvas {
  width: 100%;
  max-width: 1100px;
  aspect-ratio: 11 / 8.5;
  background-image: url('images/cert.png');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  border-radius: 10px;
  position: relative;
  margin: 0 auto;
  box-shadow: 0 8px 40px rgba(0,0,0,0.13);
  font-family: 'Georgia', serif;
  color: #000;
}

.pts-cert-centered {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 85%;
  text-align: center;
}

.pts-cert-presented {
  font-size: clamp(0.75rem, 1.5vw, 1.1rem);
  margin-bottom: 6px;
  font-family: var(--font-body);
}

.pts-cert-name {
  font-size: clamp(1.4rem, 4vw, 3.4rem);
  font-weight: 700;
  font-family: 'Georgia', serif;
  line-height: 1.15;
  margin-bottom: 10px;
}

.pts-cert-subtitle {
  font-size: clamp(0.7rem, 1.3vw, 1.1rem);
  margin-bottom: 4px;
  font-family: var(--font-body);
}

.pts-cert-course {
  font-size: clamp(1rem, 2.8vw, 2.6rem);
  font-weight: 700;
  font-family: 'Georgia', serif;
  margin: 10px 0;
  line-height: 1.2;
}

.pts-cert-date {
  font-size: clamp(0.65rem, 1.1vw, 0.95rem);
  font-weight: 600;
  margin-top: 8px;
  font-family: var(--font-body);
}

/* Action panel */
.pts-cert-action-card {
  background: var(--card-bg);
  border-radius: var(--card-radius);
  box-shadow: var(--card-shadow);
  padding: 20px;
}

.pts-cert-action-title {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 14px;
}

.pts-cert-dl-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 11px 16px;
  border-radius: 8px;
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  margin-bottom: 10px;
  text-align: left;
}

.pts-cert-dl-btn.image {
  background: rgba(59,158,255,0.1);
  color: var(--accent);
  border: 1px solid rgba(59,158,255,0.25);
}

.pts-cert-dl-btn.image:hover {
  background: var(--accent);
  color: #fff;
}

.pts-cert-dl-btn.pdf {
  background: rgba(239,68,68,0.08);
  color: #dc2626;
  border: 1px solid rgba(239,68,68,0.2);
}

.pts-cert-dl-btn.pdf:hover {
  background: var(--danger);
  color: #fff;
}

.pts-cert-back-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 16px;
  transition: color var(--transition);
}

.pts-cert-back-link:hover { color: var(--accent); }

/* ── Mobile overlay ─────────────────────────────────────────── */
.pts-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 99;
}

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 900px) {
  .pts-sidebar {
    transform: translateX(-100%);
  }

  .pts-sidebar.open {
    transform: translateX(0);
  }

  .pts-overlay.open { display: block; }

  .pts-main {
    margin-left: 0;
  }

  .pts-hamburger {
    display: block;
  }

  .pts-col-5,
  .pts-col-7,
  .pts-col-9,
  .pts-col-3 {
    flex: 0 0 100%;
  }
}