/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #dbeafe;
  --bg2: #bfdbfe;
  --card: #ffffff;
  --card2: #eff6ff;
  --border: #93c5fd;
  --border2: #60a5fa;
  --text: #0f172a;
  --text2: #334155;
  --text3: #64748b;
  --aws: #d97706;
  --aws-glow: rgba(217,119,6,0.12);
  --google: #1d4ed8;
  --google-glow: rgba(29,78,216,0.12);
  --databricks: #dc2626;
  --databricks-glow: rgba(220,38,38,0.12);
  --tf: #c2410c;
  --tf-glow: rgba(194,65,12,0.12);
  --success: #059669;
  --success-glow: rgba(5,150,105,0.12);
  --error: #dc2626;
  --error-glow: rgba(220,38,38,0.1);
  --locked: #e2e8f0;
  --locked-text: #94a3b8;
  --accent: #2563eb;
  --accent-glow: rgba(37,99,235,0.15);
  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 4px 24px rgba(37,99,235,0.08);
  --shadow-lg: 0 8px 40px rgba(37,99,235,0.14);
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg2); }
::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text3); }

/* ===== HEADER / NAV ===== */
.navbar {
  position: sticky; top: 0; z-index: 100;
  background: rgba(219,234,254,0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  height: 60px;
  display: flex; align-items: center; justify-content: space-between;
}
.navbar-brand {
  display: flex; align-items: center; gap: 10px;
  font-weight: 700; font-size: 18px;
  cursor: pointer;
  text-decoration: none; color: var(--text);
}
.navbar-brand .logo-icon {
  width: 32px; height: 32px;
  background: linear-gradient(135deg, var(--accent), #818cf8);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px;
}
.navbar-brand span { letter-spacing: -0.3px; }
.navbar-brand .brand-sub { color: var(--accent); }

.navbar-right { display: flex; align-items: center; gap: 16px; }

.streak-badge {
  display: flex; align-items: center; gap: 6px;
  background: rgba(251,146,60,0.1);
  border: 1px solid rgba(251,146,60,0.25);
  padding: 5px 12px; border-radius: 20px;
  font-size: 13px; font-weight: 600; color: #fb923c;
}

.total-progress-pill {
  display: flex; align-items: center; gap: 8px;
  background: var(--card2); border: 1px solid var(--border);
  padding: 5px 14px; border-radius: 20px;
  font-size: 13px; font-weight: 600;
}
.total-progress-pill .pct { color: var(--success); }

/* ===== MAIN LAYOUT ===== */
.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }
.page { min-height: calc(100vh - 60px); }

/* ===== HOME PAGE ===== */
.home-hero {
  padding: 56px 0 40px;
  text-align: center;
}
.home-hero h1 {
  font-size: clamp(28px, 5vw, 48px);
  font-weight: 800;
  letter-spacing: -1px;
  line-height: 1.15;
  margin-bottom: 14px;
}
.home-hero h1 span {
  background: linear-gradient(135deg, #1d4ed8, #2563eb, #0ea5e9);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.home-hero p {
  color: var(--text2); font-size: 16px; max-width: 500px; margin: 0 auto 36px;
}

/* Overall stats row */
.stats-row {
  display: flex; justify-content: center; gap: 20px;
  flex-wrap: wrap; margin-bottom: 52px;
}
.stat-chip {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 12px 24px;
  text-align: center;
}
.stat-chip .val { font-size: 22px; font-weight: 700; }
.stat-chip .lbl { font-size: 11px; text-transform: uppercase; letter-spacing: 0.5px; color: var(--text3); margin-top: 2px; }

/* Cert cards grid */
.certs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(480px, 1fr));
  gap: 20px;
  padding-bottom: 56px;
}

.cert-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.cert-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--cert-color, var(--accent));
  opacity: 0; transition: var(--transition);
}
.cert-card:hover { transform: translateY(-3px); border-color: var(--border2); box-shadow: var(--shadow-lg); }
.cert-card:hover::before { opacity: 1; }

.cert-card-header { display: flex; align-items: flex-start; gap: 16px; margin-bottom: 20px; }
.cert-icon {
  width: 52px; height: 52px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 26px; flex-shrink: 0;
  background: var(--cert-glow, rgba(37,99,235,0.08));
  border: 1px solid var(--border);
}
.cert-info { flex: 1; }
.cert-info h3 { font-size: 16px; font-weight: 700; margin-bottom: 4px; letter-spacing: -0.2px; }
.cert-info .cert-subtitle { font-size: 12px; color: var(--text3); }

.cert-meta { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 18px; }
.meta-pill {
  display: flex; align-items: center; gap: 5px;
  background: var(--card2); border: 1px solid var(--border);
  padding: 4px 10px; border-radius: 6px;
  font-size: 12px; color: var(--text2);
}

.cert-progress-section {}
.cert-progress-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.cert-progress-header span { font-size: 13px; color: var(--text2); }
.cert-progress-header .pct-label { font-weight: 700; font-size: 14px; }

.progress-bar-track {
  height: 8px; background: var(--border); border-radius: 4px; overflow: hidden;
}
.progress-bar-fill {
  height: 100%; border-radius: 4px;
  background: var(--cert-color, var(--accent));
  transition: width 0.6s cubic-bezier(0.4,0,0.2,1);
  position: relative;
}
.progress-bar-fill::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.25) 50%, transparent 100%);
  animation: shimmer 2s infinite;
}
@keyframes shimmer { 0%{transform:translateX(-100%)} 100%{transform:translateX(100%)} }

.cert-topics-summary {
  display: flex; gap: 6px; flex-wrap: wrap; margin-top: 14px;
}
.topic-dot {
  width: 10px; height: 10px; border-radius: 50%;
  transition: var(--transition);
}
.topic-dot.done { background: var(--cert-color, var(--success)); }
.topic-dot.active { background: var(--cert-color, var(--accent)); opacity: 0.6; }
.topic-dot.locked { background: var(--border2); }

.cert-card-footer {
  display: flex; justify-content: space-between; align-items: center;
  margin-top: 20px; padding-top: 16px;
  border-top: 1px solid var(--border);
}
.cert-cta {
  display: flex; align-items: center; gap: 6px;
  font-size: 13px; font-weight: 600;
  color: var(--cert-color, var(--accent));
}
.cert-cta .arrow { transition: transform 0.2s; }
.cert-card:hover .cert-cta .arrow { transform: translateX(4px); }

.cert-badge {
  font-size: 11px; font-weight: 600; padding: 3px 10px; border-radius: 12px;
  text-transform: uppercase; letter-spacing: 0.5px;
}
.cert-badge.not-started { background: var(--border); color: var(--text3); }
.cert-badge.in-progress { background: rgba(99,102,241,0.15); color: var(--accent); }
.cert-badge.completed { background: var(--success-glow); color: var(--success); }

/* ===== CERTIFICATION PAGE ===== */
.cert-page-header {
  padding: 40px 0 32px;
  display: flex; align-items: flex-start; gap: 20px;
}
.back-btn {
  display: flex; align-items: center; gap: 6px;
  background: var(--card); border: 1px solid var(--border);
  color: var(--text2); padding: 8px 14px; border-radius: var(--radius-sm);
  font-size: 13px; font-weight: 500; cursor: pointer;
  transition: var(--transition); white-space: nowrap; margin-top: 4px;
  flex-shrink: 0;
}
.back-btn:hover { background: var(--card2); color: var(--text); border-color: var(--border2); }

.cert-page-info { flex: 1; }
.cert-page-info .cert-tag {
  display: inline-block;
  font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.8px;
  padding: 3px 10px; border-radius: 4px;
  margin-bottom: 10px;
  background: var(--cert-glow); color: var(--cert-color);
  border: 1px solid rgba(255,255,255,0.06);
}
.cert-page-info h2 { font-size: clamp(22px, 4vw, 32px); font-weight: 800; letter-spacing: -0.5px; margin-bottom: 8px; }
.cert-page-info p { color: var(--text2); font-size: 14px; max-width: 600px; }

.cert-page-stats {
  display: flex; gap: 16px; flex-wrap: wrap;
  padding: 20px 24px;
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); margin-bottom: 32px;
}
.cert-page-stat { text-align: center; }
.cert-page-stat .val { font-size: 24px; font-weight: 700; }
.cert-page-stat .lbl { font-size: 11px; color: var(--text3); text-transform: uppercase; letter-spacing: 0.5px; }
.cert-page-stat + .cert-page-stat { padding-left: 16px; border-left: 1px solid var(--border); }

/* Topics list */
.topics-list { display: flex; flex-direction: column; gap: 12px; padding-bottom: 56px; }

.topic-item {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px 24px;
  display: flex; align-items: center; gap: 18px;
  transition: var(--transition);
  position: relative; overflow: hidden;
}
.topic-item.unlocked { cursor: pointer; }
.topic-item.unlocked:hover { transform: translateX(4px); border-color: var(--border2); box-shadow: 0 4px 20px rgba(0,0,0,0.3); }
.topic-item.completed { border-color: rgba(16,185,129,0.2); }
.topic-item.completed::before {
  content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
  background: var(--success);
}
.topic-item.active-topic::before {
  content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
  background: var(--cert-color, var(--accent));
}
.topic-item.locked { opacity: 0.5; cursor: not-allowed; }
.topic-item.locked:hover { transform: none; }

.topic-num {
  width: 38px; height: 38px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 14px; flex-shrink: 0;
  border: 2px solid;
}
.topic-num.done { background: var(--success-glow); border-color: var(--success); color: var(--success); }
.topic-num.open { background: var(--cert-glow); border-color: var(--cert-color, var(--accent)); color: var(--cert-color, var(--accent)); }
.topic-num.lock { background: var(--border); border-color: var(--locked); color: var(--locked-text); }

.topic-info { flex: 1; }
.topic-info h4 { font-size: 15px; font-weight: 600; margin-bottom: 4px; }
.topic-info p { font-size: 13px; color: var(--text2); }

.topic-right { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.topic-duration {
  font-size: 12px; color: var(--text3);
  background: var(--card2); border: 1px solid var(--border);
  padding: 3px 8px; border-radius: 5px;
}
.topic-status {
  font-size: 12px; font-weight: 600; padding: 4px 10px; border-radius: 12px;
}
.topic-status.done { background: var(--success-glow); color: var(--success); }
.topic-status.open { background: var(--cert-glow); color: var(--cert-color, var(--accent)); }
.topic-status.lock { background: var(--border); color: var(--locked-text); }
.lock-icon { font-size: 16px; }

/* ===== TOPIC PAGE ===== */
.topic-page { padding-bottom: 80px; }

.topic-page-header {
  padding: 32px 0 24px;
  display: flex; align-items: flex-start; gap: 16px;
}
.topic-page-header .header-content { flex: 1; }
.topic-page-header .topic-breadcrumb {
  font-size: 12px; color: var(--text3); margin-bottom: 8px;
  display: flex; align-items: center; gap: 6px;
}
.topic-page-header .topic-breadcrumb span { color: var(--cert-color); }
.topic-page-header h2 { font-size: clamp(20px,3.5vw,28px); font-weight: 800; letter-spacing: -0.4px; margin-bottom: 6px; }
.topic-page-header .topic-meta-row {
  display: flex; gap: 12px; flex-wrap: wrap; margin-top: 10px;
}

.content-layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 24px;
  align-items: start;
}
@media (max-width: 800px) { .content-layout { grid-template-columns: 1fr; } }

/* Content box */
.content-box {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 32px;
}
.content-box h3 {
  font-size: 18px; font-weight: 700; margin: 28px 0 12px;
  color: var(--cert-color, var(--text));
}
.content-box h3:first-child { margin-top: 0; }
.content-box p { font-size: 14px; color: var(--text2); margin-bottom: 14px; line-height: 1.75; }
.content-box ul { padding-left: 20px; margin-bottom: 14px; }
.content-box li { font-size: 14px; color: var(--text2); margin-bottom: 6px; line-height: 1.7; }
.content-box strong { color: var(--text); }

.key-points-card {
  background: var(--card2); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 20px; margin: 20px 0;
}
.key-points-card h4 { font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; color: var(--cert-color, var(--accent)); margin-bottom: 12px; }
.key-point-item {
  display: flex; align-items: flex-start; gap: 10px;
  margin-bottom: 10px; font-size: 14px; color: var(--text2);
}
.key-point-item .kp-icon { font-size: 16px; flex-shrink: 0; margin-top: 1px; }

pre {
  background: #f1f5f9;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 20px; margin: 16px 0;
  overflow-x: auto; font-size: 13px;
  font-family: 'JetBrains Mono', monospace;
  line-height: 1.7;
}
code { font-family: 'JetBrains Mono', monospace; font-size: 12px; }
.code-label {
  font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px;
  color: var(--text3); margin-bottom: 6px;
}

.info-callout {
  display: flex; gap: 12px;
  background: rgba(99,102,241,0.08); border: 1px solid rgba(99,102,241,0.2);
  border-radius: var(--radius-sm); padding: 16px; margin: 16px 0;
}
.info-callout .callout-icon { font-size: 18px; flex-shrink: 0; }
.info-callout p { font-size: 13px; margin: 0; color: var(--text2); }

/* Sidebar */
.topic-sidebar { display: flex; flex-direction: column; gap: 16px; }

.sidebar-card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px;
}
.sidebar-card h4 { font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; color: var(--text3); margin-bottom: 14px; }

.topics-nav-list { display: flex; flex-direction: column; gap: 6px; }
.topics-nav-item {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 10px; border-radius: 8px;
  font-size: 13px; transition: var(--transition);
  cursor: default;
}
.topics-nav-item.nav-done { color: var(--success); }
.topics-nav-item.nav-active {
  background: var(--cert-glow); color: var(--cert-color, var(--accent));
  font-weight: 600; cursor: default;
}
.topics-nav-item.nav-lock { color: var(--locked-text); }
.topics-nav-item.nav-clickable { cursor: pointer; }
.topics-nav-item.nav-clickable:hover { background: var(--card2); }
.topics-nav-num {
  width: 22px; height: 22px; border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  font-size: 11px; font-weight: 700; flex-shrink: 0;
  background: var(--card2); border: 1px solid var(--border);
}
.topics-nav-item.nav-done .topics-nav-num { background: var(--success-glow); border-color: var(--success); }
.topics-nav-item.nav-active .topics-nav-num { background: var(--cert-glow); border-color: var(--cert-color, var(--accent)); }

/* ===== QUIZ SECTION ===== */
.quiz-section {
  margin-top: 40px;
  border-top: 2px solid var(--border);
  padding-top: 32px;
}
.quiz-header { margin-bottom: 28px; }
.quiz-header h3 { font-size: 20px; font-weight: 700; margin-bottom: 6px; }
.quiz-header p { font-size: 13px; color: var(--text2); }
.quiz-progress-bar { margin-top: 12px; }
.quiz-progress-text { font-size: 12px; color: var(--text3); margin-bottom: 6px; }
.quiz-bar-track { height: 4px; background: var(--border); border-radius: 2px; }
.quiz-bar-fill { height: 100%; border-radius: 2px; background: var(--cert-color, var(--accent)); transition: width 0.4s; }

.question-card {
  background: var(--card2); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 28px; margin-bottom: 16px;
}
.question-num { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; color: var(--text3); margin-bottom: 10px; }
.question-text { font-size: 16px; font-weight: 600; margin-bottom: 22px; line-height: 1.5; }

.options-list { display: flex; flex-direction: column; gap: 10px; }
.option-btn {
  display: flex; align-items: flex-start; gap: 14px;
  background: var(--card); border: 2px solid var(--border);
  border-radius: var(--radius-sm); padding: 14px 16px;
  cursor: pointer; transition: var(--transition); text-align: left; width: 100%;
  font-family: 'Inter', sans-serif;
}
.option-btn:hover { border-color: var(--border2); background: var(--card2); }
.option-btn.selected { border-color: var(--cert-color, var(--accent)); background: var(--cert-glow); }
.option-btn.correct { border-color: var(--success); background: var(--success-glow); }
.option-btn.wrong { border-color: var(--error); background: var(--error-glow); }
.option-btn.show-correct { border-color: var(--success); background: var(--success-glow); }

.option-letter {
  width: 28px; height: 28px; border-radius: 7px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 700;
  background: var(--card2); border: 1px solid var(--border);
  transition: var(--transition);
}
.option-btn.selected .option-letter { background: var(--cert-glow); border-color: var(--cert-color, var(--accent)); color: var(--cert-color, var(--accent)); }
.option-btn.correct .option-letter { background: var(--success-glow); border-color: var(--success); color: var(--success); }
.option-btn.wrong .option-letter { background: var(--error-glow); border-color: var(--error); color: var(--error); }

.option-text { font-size: 14px; color: var(--text); line-height: 1.5; padding-top: 3px; }

.explanation-box {
  display: none; margin-top: 14px;
  background: rgba(99,102,241,0.06); border: 1px solid rgba(99,102,241,0.2);
  border-radius: var(--radius-sm); padding: 14px 16px;
}
.explanation-box.show { display: flex; gap: 10px; align-items: flex-start; }
.explanation-box p { font-size: 13px; color: var(--text2); margin: 0; }

.quiz-nav {
  display: flex; justify-content: space-between; align-items: center;
  margin-top: 24px;
}
.quiz-nav .q-counter { font-size: 13px; color: var(--text3); }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 20px; border-radius: var(--radius-sm);
  font-size: 14px; font-weight: 600; cursor: pointer;
  transition: var(--transition); border: none; font-family: 'Inter', sans-serif;
}
.btn-primary {
  background: var(--cert-color, var(--accent));
  color: #fff; box-shadow: 0 0 0 0 var(--cert-glow);
}
.btn-primary:hover { opacity: 0.88; transform: translateY(-1px); box-shadow: 0 4px 16px var(--cert-glow); }
.btn-primary:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }
.btn-secondary {
  background: var(--card2); border: 1px solid var(--border); color: var(--text2);
}
.btn-secondary:hover { border-color: var(--border2); color: var(--text); }
.btn-ghost { background: transparent; color: var(--text2); padding: 10px 12px; }
.btn-ghost:hover { color: var(--text); }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { opacity: 0.88; }

/* Quiz Results */
.quiz-result-card {
  background: var(--card); border: 2px solid var(--border);
  border-radius: var(--radius); padding: 40px; text-align: center;
  margin-top: 24px;
}
.quiz-result-card.pass { border-color: var(--success); }
.quiz-result-card.fail { border-color: var(--error); }
.result-icon { font-size: 52px; margin-bottom: 16px; }
.result-title { font-size: 24px; font-weight: 800; margin-bottom: 8px; }
.result-score { font-size: 48px; font-weight: 800; margin: 16px 0; }
.result-score.pass-score { color: var(--success); }
.result-score.fail-score { color: var(--error); }
.result-desc { color: var(--text2); font-size: 14px; margin-bottom: 28px; max-width: 400px; margin-left: auto; margin-right: auto; }
.result-actions { display: flex; justify-content: center; gap: 12px; flex-wrap: wrap; }

/* Score pills */
.score-pills { display: flex; justify-content: center; gap: 16px; margin: 20px 0; }
.score-pill { text-align: center; }
.score-pill .pill-val { font-size: 22px; font-weight: 700; }
.score-pill .pill-lbl { font-size: 11px; text-transform: uppercase; letter-spacing: 0.5px; color: var(--text3); }
.score-pill.correct-pill .pill-val { color: var(--success); }
.score-pill.wrong-pill .pill-val { color: var(--error); }

/* Completion badge */
.cert-complete-banner {
  background: linear-gradient(135deg, rgba(16,185,129,0.1), rgba(16,185,129,0.05));
  border: 1px solid rgba(16,185,129,0.3); border-radius: var(--radius);
  padding: 28px 32px; text-align: center; margin: 24px 0;
}
.cert-complete-banner h3 { font-size: 22px; font-weight: 800; color: var(--success); margin-bottom: 8px; }
.cert-complete-banner p { color: var(--text2); font-size: 14px; }

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
.fade-in { animation: fadeIn 0.3s ease; }
.fade-in-up { animation: fadeInUp 0.4s cubic-bezier(0.4,0,0.2,1) both; }

.cert-card:nth-child(1) { animation-delay: 0.05s; }
.cert-card:nth-child(2) { animation-delay: 0.1s; }
.cert-card:nth-child(3) { animation-delay: 0.15s; }
.cert-card:nth-child(4) { animation-delay: 0.2s; }

.topic-item:nth-child(1) { animation-delay: 0.04s; }
.topic-item:nth-child(2) { animation-delay: 0.08s; }
.topic-item:nth-child(3) { animation-delay: 0.12s; }
.topic-item:nth-child(4) { animation-delay: 0.16s; }
.topic-item:nth-child(5) { animation-delay: 0.20s; }
.topic-item:nth-child(6) { animation-delay: 0.24s; }
.topic-item:nth-child(7) { animation-delay: 0.28s; }
.topic-item:nth-child(8) { animation-delay: 0.32s; }

/* Toast */
.toast {
  position: fixed; bottom: 24px; right: 24px; z-index: 999;
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 14px 20px;
  font-size: 14px; font-weight: 500;
  box-shadow: var(--shadow-lg);
  animation: fadeInUp 0.3s ease;
  display: flex; align-items: center; gap: 10px;
}
.toast.success { border-color: var(--success); }
.toast.error { border-color: var(--error); }

/* ===== EMPTY / LOCKED STATE ===== */
.locked-overlay {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 48px; text-align: center;
  background: var(--card); border: 1px dashed var(--border);
  border-radius: var(--radius); margin: 24px 0;
}
.locked-overlay .lock-emoji { font-size: 40px; margin-bottom: 14px; }
.locked-overlay h4 { font-weight: 700; margin-bottom: 6px; }
.locked-overlay p { color: var(--text2); font-size: 13px; }

/* ===== RESPONSIVE ===== */
@media (max-width: 640px) {
  .certs-grid { grid-template-columns: 1fr; }
  .cert-page-stats { flex-direction: column; gap: 12px; }
  .cert-page-stat + .cert-page-stat { padding-left: 0; border-left: none; border-top: 1px solid var(--border); padding-top: 12px; }
  .topic-item { flex-wrap: wrap; }
  .topic-right { width: 100%; justify-content: flex-end; }
  .navbar { padding: 0 16px; }
  .container { padding: 0 16px; }
  .content-box { padding: 20px; }
  .quiz-result-card { padding: 24px; }
}

/* ===================================================
   AUTH SCREEN — Dark Split Layout
   =================================================== */
.hidden { display: none !important; }

.auth-screen {
  position: fixed; inset: 0; z-index: 1000;
  background: linear-gradient(135deg, #2d1f7a 0%, #3b2a9e 30%, #1e3a8a 65%, #0f2057 100%);
  overflow: hidden;
}

/* Background */
.auth-bg { position: absolute; inset: 0; pointer-events: none; }
.auth-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(165,122,255,0.13) 1px, transparent 1px),
    linear-gradient(90deg, rgba(165,122,255,0.13) 1px, transparent 1px);
  background-size: 48px 48px;
}
.auth-blob {
  position: absolute; border-radius: 50%;
  filter: blur(75px);
  animation: blobFloat 12s ease-in-out infinite alternate;
}
.blob1 {
  width: 700px; height: 700px; opacity: 0.65;
  background: radial-gradient(circle, #818cf8, transparent 65%);
  top: -240px; left: -200px; animation-delay: 0s;
}
.blob2 {
  width: 580px; height: 580px; opacity: 0.5;
  background: radial-gradient(circle, #c084fc, transparent 65%);
  bottom: -180px; right: -120px; animation-delay: 5s;
}
.blob3 {
  width: 460px; height: 460px; opacity: 0.38;
  background: radial-gradient(circle, #60a5fa, transparent 65%);
  top: 30%; left: 38%; animation-delay: 2.5s;
}
@keyframes blobFloat {
  0%   { transform: scale(1) translate(0,0); }
  100% { transform: scale(1.18) translate(28px,-28px); }
}
.blob3 { animation-name: blobFloat3; }
@keyframes blobFloat3 {
  0%   { transform: translate(0,0) scale(1); }
  100% { transform: translate(-22px,22px) scale(1.1); }
}

/* ---- Two-column layout ---- */
.auth-layout {
  position: relative; z-index: 2;
  display: grid;
  grid-template-columns: 1fr 460px;
  min-height: 100vh;
}

/* ---- LEFT PANEL ---- */
.auth-left {
  display: flex; align-items: center; justify-content: center;
  padding: 60px 56px;
  border-right: 1px solid rgba(99,102,241,0.1);
}
.auth-left-inner { max-width: 480px; }

.al-logo {
  display: flex; align-items: center; gap: 12px;
  font-size: 22px; font-weight: 800; margin-bottom: 44px;
  letter-spacing: -0.4px; color: #fff;
}
.al-logo-img {
  width: 44px; height: 44px; border-radius: 12px;
  box-shadow: 0 0 28px rgba(99,102,241,0.5);
}
.brand-sub { color: #a5b4fc; }

.al-headline {
  font-size: clamp(30px, 3.8vw, 50px);
  font-weight: 800; letter-spacing: -1.5px;
  line-height: 1.1; margin-bottom: 18px; color: #f1f5f9;
}
.al-gradient {
  background: linear-gradient(135deg, #818cf8 0%, #a78bfa 45%, #38bdf8 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradShift 5s ease-in-out infinite alternate;
  background-size: 200%;
}
@keyframes gradShift {
  0%   { background-position: 0% 50%; }
  100% { background-position: 100% 50%; }
}

.al-sub {
  font-size: 15px; color: #94a3b8; margin-bottom: 36px;
  line-height: 1.7; max-width: 400px;
}

/* Cert badges */
.al-certs {
  display: flex; flex-wrap: wrap; gap: 9px; margin-bottom: 40px;
}
.al-cert-badge {
  display: flex; align-items: center; gap: 7px;
  padding: 7px 14px; border-radius: 20px;
  border: 1px solid color-mix(in srgb, var(--c) 25%, transparent);
  background: color-mix(in srgb, var(--c) 10%, rgba(255,255,255,0.03));
  color: color-mix(in srgb, var(--c) 80%, #fff);
  font-size: 12px; font-weight: 600;
  transition: all 0.2s;
}
.al-cert-badge:hover {
  background: color-mix(in srgb, var(--c) 18%, rgba(255,255,255,0.05));
  transform: translateY(-2px);
  box-shadow: 0 4px 16px color-mix(in srgb, var(--c) 30%, transparent);
}

/* Features */
.al-features {
  display: flex; flex-direction: column; gap: 18px; margin-bottom: 40px;
}
.al-feature {
  display: flex; align-items: flex-start; gap: 14px;
}
.al-feature-icon {
  width: 40px; height: 40px; flex-shrink: 0;
  background: rgba(99,102,241,0.12); border: 1px solid rgba(99,102,241,0.2);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
}
.al-feature-title { font-size: 14px; font-weight: 700; color: #e2e8f0; margin-bottom: 2px; }
.al-feature-desc  { font-size: 12px; color: #94a3b8; }

/* Quote */
.al-quote {
  border-left: 3px solid rgba(165,122,255,0.5);
  padding-left: 16px;
  font-size: 12px; color: #94a3b8; font-style: italic;
  line-height: 1.7;
}

/* ---- RIGHT PANEL ---- */
.auth-right {
  display: flex; align-items: center; justify-content: center;
  padding: 40px 40px;
  background: rgba(255,255,255,0.025);
  backdrop-filter: blur(20px);
  border-left: 1px solid rgba(255,255,255,0.06);
}

.auth-card {
  width: 100%; max-width: 380px;
  background: rgba(10,15,40,0.55);
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: 24px;
  padding: 36px 32px;
  box-shadow: 0 24px 60px rgba(0,0,0,0.35), 0 0 0 1px rgba(255,255,255,0.04) inset;
  animation: authCardIn 0.45s cubic-bezier(0.4,0,0.2,1);
  backdrop-filter: blur(24px);
}
@keyframes authCardIn {
  from { opacity:0; transform: translateY(24px) scale(0.98); }
  to   { opacity:1; transform: translateY(0) scale(1); }
}

/* Mobile logo (hidden on desktop) */
.auth-logo-mobile {
  display: none;
  align-items: center; gap: 10px;
  font-size: 20px; font-weight: 800;
  margin-bottom: 24px; letter-spacing: -0.4px; color: #fff;
}

/* Tabs */
.auth-tabs {
  display: flex; gap: 3px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 12px; padding: 3px;
  margin-bottom: 24px;
}
.auth-tab {
  flex: 1; padding: 9px; border-radius: 9px;
  font-size: 14px; font-weight: 600;
  background: transparent; border: none; color: #64748b;
  cursor: pointer; transition: all 0.2s;
  font-family: 'Inter', sans-serif;
}
.auth-tab.active {
  background: linear-gradient(135deg, #6366f1, #7c3aed);
  color: #ffffff;
  box-shadow: 0 2px 12px rgba(99,102,241,0.4);
}
.auth-tab:hover:not(.active) { color: #a5b4fc; }

/* Form */
.auth-form { display: flex; flex-direction: column; gap: 16px; }
.auth-form.hidden { display: none; }

.field-group { display: flex; flex-direction: column; gap: 6px; }
.field-label {
  font-size: 11px; font-weight: 600; color: #94a3b8;
  text-transform: uppercase; letter-spacing: 0.6px;
  display: flex; align-items: center; justify-content: space-between;
}

/* Input with icon */
.input-icon-wrap { position: relative; }
.input-icon {
  position: absolute; left: 13px; top: 50%; transform: translateY(-50%);
  width: 16px; height: 16px; color: #475569; pointer-events: none;
  transition: color 0.2s;
}
.field-input {
  width: 100%; padding: 12px 14px;
  background: rgba(255,255,255,0.05);
  border: 1.5px solid rgba(255,255,255,0.1);
  border-radius: 11px; color: #f1f5f9;
  font-size: 14px; font-family: 'Inter', sans-serif;
  transition: all 0.2s; outline: none;
  box-sizing: border-box;
}
.field-input.has-icon { padding-left: 40px; }
.field-input:focus {
  border-color: #6366f1;
  background: rgba(99,102,241,0.08);
  box-shadow: 0 0 0 3px rgba(99,102,241,0.15);
}
.field-input:focus + .input-icon,
.input-icon-wrap:focus-within .input-icon { color: #818cf8; }
.field-input::placeholder { color: #64748b; }

.eye-btn {
  position: absolute; right: 12px; top: 50%; transform: translateY(-50%);
  background: none; border: none; cursor: pointer; font-size: 15px; padding: 2px;
  opacity: 0.35; transition: opacity 0.2s; line-height: 1;
}
.eye-btn:hover { opacity: 0.7; }

/* Remember + forgot row */
.auth-row {
  display: flex; align-items: center; justify-content: space-between;
  margin-top: -4px;
}
.remember-label {
  display: flex; align-items: center; gap: 7px;
  font-size: 13px; color: #64748b; cursor: pointer;
}
.remember-label input { accent-color: #6366f1; cursor: pointer; width: 14px; height: 14px; }
.link-btn {
  background: none; border: none; color: #818cf8;
  font-size: 13px; cursor: pointer; padding: 0;
  font-family: 'Inter', sans-serif; transition: color 0.2s;
}
.link-btn:hover { color: #a5b4fc; text-decoration: underline; }

/* Error / Success */
.auth-error {
  background: rgba(239,68,68,0.1); border: 1px solid rgba(239,68,68,0.25);
  border-radius: 9px; padding: 10px 14px;
  font-size: 13px; color: #f87171;
}
.auth-success {
  background: rgba(16,185,129,0.1); border: 1px solid rgba(16,185,129,0.25);
  border-radius: 9px; padding: 10px 14px;
  font-size: 13px; color: #34d399;
}

/* Primary button */
.btn-auth {
  width: 100%; padding: 13px;
  background: linear-gradient(135deg, #6366f1, #7c3aed);
  border: none; border-radius: 11px;
  color: #fff; font-size: 15px; font-weight: 700;
  cursor: pointer; transition: all 0.25s;
  font-family: 'Inter', sans-serif;
  display: flex; align-items: center; justify-content: center; gap: 8px;
  letter-spacing: 0.2px;
  box-shadow: 0 4px 20px rgba(99,102,241,0.4);
}
.btn-auth:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(99,102,241,0.55);
}
.btn-auth:active:not(:disabled) { transform: translateY(0); }
.btn-auth:disabled { opacity: 0.4; cursor: not-allowed; transform: none; box-shadow: none; }

/* Divider */
.auth-divider {
  display: flex; align-items: center; gap: 12px;
  color: #94a3b8; font-size: 12px; font-weight: 500;
}
.auth-divider::before, .auth-divider::after {
  content: ''; flex: 1; height: 1px;
  background: rgba(255,255,255,0.07);
}

/* Google button — PRIMARY */
.btn-google-primary {
  width: 100%; padding: 12px 16px;
  background: rgba(255,255,255,0.95);
  border: none; border-radius: 12px;
  color: #1e293b; font-size: 14px; font-weight: 600;
  cursor: pointer; transition: all 0.22s;
  font-family: 'Inter', sans-serif;
  display: flex; align-items: center; justify-content: center; gap: 10px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.3);
  letter-spacing: 0.1px;
}
.btn-google-primary:hover {
  background: #fff;
  box-shadow: 0 4px 20px rgba(0,0,0,0.4);
  transform: translateY(-1px);
}
.btn-google-primary:active { transform: translateY(0); }

/* Google button — secondary */
.btn-google {
  width: 100%; padding: 12px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 11px; color: #cbd5e1;
  font-size: 14px; font-weight: 600; cursor: pointer;
  transition: all 0.2s; font-family: 'Inter', sans-serif;
  display: flex; align-items: center; justify-content: center; gap: 10px;
}
.btn-google:hover {
  background: rgba(255,255,255,0.09);
  border-color: rgba(255,255,255,0.18); transform: translateY(-1px);
}

/* Password field wrapper */
.pw-wrap { position: relative; display: flex; align-items: center; }
.pw-wrap .field-input { padding-right: 42px; }
.pw-wrap .eye-btn {
  position: absolute; right: 12px;
  background: none; border: none; cursor: pointer;
  color: #64748b; padding: 4px;
  display: flex; align-items: center; justify-content: center;
  transition: color 0.2s; line-height: 1;
}
.pw-wrap .eye-btn:hover { color: #94a3b8; }

/* Label link */
.label-link {
  background: none; border: none; padding: 0;
  color: #818cf8; font-size: 11px; font-weight: 500;
  cursor: pointer; font-family: 'Inter', sans-serif;
  transition: color 0.2s; letter-spacing: 0.2px; text-transform: none;
}
.label-link:hover { color: #a5b4fc; text-decoration: underline; }

/* Spin */
@keyframes spin { to { transform: rotate(360deg); } }
.spin { animation: spin 0.8s linear infinite; display: inline-block; }

/* Switch text */
.auth-switch-text { text-align: center; font-size: 13px; color: #94a3b8; margin: 0; }
.auth-switch-text .link-btn { font-size: 13px; }

/* Forgot */
.back-link {
  background: none; border: none; color: #94a3b8;
  font-size: 13px; cursor: pointer; padding: 0; text-align: left;
  font-family: 'Inter', sans-serif; transition: color 0.2s;
  display: inline-flex; align-items: center; gap: 4px;
}
.back-link:hover { color: #cbd5e1; }
.forgot-header { text-align: center; padding: 8px 0 4px; }
.forgot-icon { font-size: 40px; margin-bottom: 12px; }
.forgot-header h3 { font-size: 20px; font-weight: 800; margin-bottom: 8px; color: #e2e8f0; }
.forgot-header p { font-size: 14px; color: #94a3b8; line-height: 1.5; }

/* ---- Responsive ---- */
@media (max-width: 900px) {
  .auth-layout { grid-template-columns: 1fr; }
  .auth-left { display: none; }
  .auth-right {
    padding: 0; min-height: 100vh; background: transparent;
    border-left: none; align-items: flex-start;
  }
  .auth-card {
    border-radius: 0; border: none; min-height: 100vh;
    padding: 40px 24px; box-shadow: none;
    background: transparent;
    max-width: 100%;
  }
  .auth-logo-mobile { display: flex; }
}

/* ===================================================
   NAVBAR AVATAR
   =================================================== */
.nav-avatar-btn {
  width: 36px; height: 36px; border-radius: 50%;
  border: 2px solid var(--border2);
  background: var(--card2); cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  padding: 0; overflow: hidden; transition: var(--transition);
  flex-shrink: 0;
}
.nav-avatar-btn:hover {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
.nav-avatar-img {
  width: 100%; height: 100%; object-fit: cover; border-radius: 50%;
}
.nav-avatar-initials {
  width: 100%; height: 100%; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), #818cf8);
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 700; color: #fff;
}

/* ===================================================
   PROFILE DROPDOWN
   =================================================== */
.profile-dropdown {
  position: fixed; z-index: 999;
  width: 260px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 0; overflow: hidden;
  box-shadow: 0 16px 48px rgba(37,99,235,0.12), 0 4px 16px rgba(0,0,0,0.08);
  animation: fadeInUp 0.2s ease;
}

.pd-header {
  display: flex; align-items: center; gap: 12px;
  padding: 18px 18px 14px;
}
.pd-avatar-lg {
  width: 48px; height: 48px; flex-shrink: 0;
  border-radius: 50%; overflow: hidden;
  background: linear-gradient(135deg, var(--accent), #818cf8);
}
.pd-info { flex: 1; min-width: 0; }
.pd-name {
  font-size: 14px; font-weight: 700; color: var(--text);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.pd-email {
  font-size: 12px; color: var(--text3);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  margin-top: 2px;
}

.pd-divider { height: 1px; background: var(--border); margin: 0; }

.pd-stats { padding: 12px 18px; display: flex; flex-direction: column; gap: 8px; }
.pd-stat-row {
  display: flex; justify-content: space-between; align-items: center;
  font-size: 13px; color: var(--text2);
}
.pd-stat-row strong { color: var(--text); font-weight: 600; }

.pd-premium-tag {
  display: inline-flex; align-items: center; gap: 4px;
  margin-top: 4px; padding: 2px 8px;
  background: linear-gradient(135deg, #fef3c7, #fde68a);
  border: 1px solid #fcd34d;
  border-radius: 20px;
  font-size: 11px; font-weight: 700; color: #92400e;
}

.pd-menu { padding: 6px 0; }

.pd-item {
  display: flex; align-items: center; gap: 10px;
  width: 100%; padding: 10px 18px;
  background: none; border: none; text-align: left;
  font-size: 14px; color: var(--text2); cursor: pointer;
  transition: var(--transition); font-family: 'Inter', sans-serif;
}
.pd-item:hover { background: var(--card2); color: var(--text); }
.pd-item-icon { font-size: 16px; flex-shrink: 0; width: 20px; text-align: center; }
.pd-item-label { flex: 1; }
.pd-logout {
  color: var(--error);
  border-top: 1px solid var(--border);
  margin-top: 4px; padding-top: 12px;
}
.pd-logout:hover { background: var(--error-glow); color: var(--error); }

.pd-upgrade-row { padding: 10px 14px 4px; }
.pd-upgrade-btn {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  width: 100%; padding: 10px 16px;
  background: linear-gradient(135deg, #f59e0b, #fbbf24);
  border: none; border-radius: 10px;
  color: #fff; font-size: 13px; font-weight: 700;
  cursor: pointer; font-family: 'Inter', sans-serif;
  transition: var(--transition);
  box-shadow: 0 2px 8px rgba(245,158,11,0.3);
}
.pd-upgrade-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(245,158,11,0.45);
}

/* ===================================================
   EXAM CTA (cert page)
   =================================================== */
.exam-cta-row {
  display: flex; align-items: center; gap: 16px;
  padding: 18px 24px;
  background: rgba(37,99,235,0.06);
  border: 1px solid rgba(37,99,235,0.2);
  border-radius: 14px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}
.btn-exam-start {
  padding: 12px 24px;
  background: linear-gradient(135deg, #1d4ed8, #2563eb);
  border: none; border-radius: 10px;
  color: #fff; font-size: 15px; font-weight: 700;
  cursor: pointer; font-family: 'Inter', sans-serif;
  transition: all 0.22s;
  box-shadow: 0 4px 18px rgba(37,99,235,0.3);
  white-space: nowrap;
}
.btn-exam-start:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(37,99,235,0.45);
}
.exam-cta-hint {
  font-size: 13px; color: var(--text3);
}

/* ===================================================
   EXAM PAGE
   =================================================== */
.exam-page { padding: 0; }
.exam-layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 0;
  min-height: calc(100vh - 64px);
}

/* Exam main area */
.exam-main {
  padding: 28px 32px 40px;
  border-right: 1px solid var(--border);
}
.exam-header { margin-bottom: 24px; }
.exam-meta {
  display: flex; align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}
.exam-badge {
  display: inline-block;
  padding: 4px 12px; border-radius: 20px;
  background: rgba(37,99,235,0.1);
  color: var(--accent); font-size: 12px; font-weight: 700;
  border: 1px solid rgba(37,99,235,0.25);
}
.exam-progress-text { font-size: 13px; color: var(--text3); }
.exam-progress-bar-wrap {
  height: 4px; background: var(--border2); border-radius: 4px; overflow: hidden;
}
.exam-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, #6366f1, #818cf8);
  border-radius: 4px; transition: width 0.3s;
}

/* Question card */
.exam-question-card {
  background: var(--card);
  border: 1px solid var(--border2);
  border-radius: 16px;
  padding: 28px;
  margin-bottom: 24px;
}
.exam-q-num {
  font-size: 12px; font-weight: 700; color: var(--text3);
  text-transform: uppercase; letter-spacing: 0.5px;
  margin-bottom: 6px;
}
.exam-q-topic {
  font-size: 12px; color: var(--accent);
  margin-bottom: 16px; font-weight: 500;
}
.exam-q-text {
  font-size: 17px; font-weight: 600; color: var(--text);
  line-height: 1.55; margin-bottom: 24px;
}
.exam-options {
  display: flex; flex-direction: column; gap: 10px;
}
.exam-option {
  display: flex; align-items: flex-start; gap: 14px;
  padding: 14px 18px;
  background: #ffffff;
  border: 1.5px solid var(--border);
  border-radius: 12px;
  cursor: pointer; text-align: left; width: 100%;
  color: var(--text2); font-size: 14px;
  font-family: 'Inter', sans-serif;
  transition: all 0.18s;
}
.exam-option:hover {
  border-color: #2563eb;
  background: rgba(37,99,235,0.05);
  color: var(--text);
}
.exam-option.exam-selected {
  border-color: #2563eb;
  background: rgba(37,99,235,0.08);
  color: #1e293b;
}
.exam-letter {
  width: 26px; height: 26px; flex-shrink: 0;
  border-radius: 50%;
  background: #f1f5f9;
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 700; color: var(--text3);
}
.exam-option.exam-selected .exam-letter {
  background: #2563eb; color: #fff;
}
.exam-opt-text { line-height: 1.45; }

/* Exam nav row */
.exam-nav-row {
  display: flex; align-items: center; gap: 12px;
  flex-wrap: wrap;
}
.btn-exam-flag {
  padding: 10px 18px; border-radius: 9px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border2);
  color: var(--text3); font-size: 13px; font-weight: 600;
  cursor: pointer; font-family: 'Inter', sans-serif;
  transition: all 0.2s;
}
.btn-exam-flag:hover { border-color: #f59e0b; color: #f59e0b; }
.btn-exam-flag.flagged {
  background: rgba(245,158,11,0.1);
  border-color: #f59e0b; color: #f59e0b;
}

/* Exam sidebar */
.exam-sidebar {
  padding: 24px 20px;
  background: var(--bg);
  display: flex; flex-direction: column; gap: 16px;
  position: sticky; top: 64px;
  height: fit-content;
}
.exam-sidebar-card {
  background: var(--card); border: 1px solid var(--border2);
  border-radius: 14px; padding: 18px;
}
.exam-sidebar-title {
  font-size: 13px; font-weight: 700; color: var(--text);
  margin-bottom: 12px;
}
.exam-dots-legend {
  display: flex; align-items: center; gap: 8px;
  font-size: 11px; color: var(--text3);
  margin-bottom: 14px; flex-wrap: wrap;
}
.dot-legend {
  width: 10px; height: 10px; border-radius: 3px; display: inline-block;
}
.dot-legend.answered  { background: #6366f1; }
.dot-legend.flagged   { background: #f59e0b; }
.dot-legend.unanswered{ background: var(--border2); }

.exam-dots-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 6px;
}
.exam-dot {
  width: 32px; height: 32px; border-radius: 7px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border2);
  cursor: pointer; transition: all 0.15s;
  display: flex; align-items: center; justify-content: center;
  font-size: 10px; color: var(--text3);
}
.exam-dot:hover { border-color: var(--accent); }
.exam-dot-answered { background: rgba(99,102,241,0.3); border-color: #6366f1; }
.exam-dot-current  { background: #6366f1; border-color: #818cf8; box-shadow: 0 0 10px rgba(99,102,241,0.6); }
.exam-dot-flagged  { background: rgba(245,158,11,0.25); border-color: #f59e0b; }

.btn-exam-submit {
  width: 100%; padding: 14px 12px;
  background: linear-gradient(135deg, #10b981, #34d399);
  border: none; border-radius: 12px;
  color: #fff; font-size: 14px; font-weight: 700;
  cursor: pointer; font-family: 'Inter', sans-serif;
  line-height: 1.5; transition: all 0.2s;
  box-shadow: 0 4px 16px rgba(16,185,129,0.3);
}
.btn-exam-submit:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(16,185,129,0.45);
}

/* Timer */
.exam-timer-badge {
  padding: 6px 14px; border-radius: 20px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border2);
  font-size: 14px; font-weight: 700; color: var(--text2);
  font-family: 'JetBrains Mono', monospace;
  transition: all 0.4s;
}
.timer-warning { color: #f59e0b; border-color: rgba(245,158,11,0.4); background: rgba(245,158,11,0.08); }
.timer-danger  { color: #ef4444; border-color: rgba(239,68,68,0.5);  background: rgba(239,68,68,0.1);
                 animation: timerPulse 0.8s ease infinite; }
@keyframes timerPulse {
  0%,100% { box-shadow: 0 0 0 0 rgba(239,68,68,0.4); }
  50%      { box-shadow: 0 0 0 6px rgba(239,68,68,0); }
}

/* ===================================================
   EXAM RESULT
   =================================================== */
.exam-result-card {
  border-radius: 20px; padding: 40px;
  text-align: center; margin-bottom: 32px;
  border: 1px solid var(--border2);
}
.exam-pass { background: rgba(16,185,129,0.06); border-color: rgba(16,185,129,0.3); }
.exam-fail { background: rgba(239,68,68,0.06);  border-color: rgba(239,68,68,0.3); }
.exam-result-icon  { font-size: 60px; margin-bottom: 16px; }
.exam-result-title { font-size: 24px; font-weight: 800; color: var(--text); margin-bottom: 8px; }
.exam-result-score {
  font-size: 72px; font-weight: 900; line-height: 1;
  margin-bottom: 8px;
}
.exam-pass .exam-result-score { color: #10b981; }
.exam-fail .exam-result-score { color: #ef4444; }
.exam-result-pass-line { font-size: 14px; color: var(--text3); margin-bottom: 28px; }

.exam-result-stats {
  display: flex; justify-content: center; gap: 24px;
  flex-wrap: wrap; margin-bottom: 32px;
}
.ers-item { text-align: center; }
.ers-val {
  font-size: 28px; font-weight: 800; color: var(--text);
}
.ers-lbl { font-size: 12px; color: var(--text3); margin-top: 2px; }
.correct-col { color: #10b981; }
.wrong-col   { color: #ef4444; }

.exam-result-actions {
  display: flex; justify-content: center; gap: 12px; flex-wrap: wrap;
}

/* Review */
.exam-review-section h3 {
  font-size: 18px; font-weight: 700; color: var(--text);
  margin-bottom: 16px;
}
.exam-review-item {
  background: var(--card); border: 1px solid var(--border2);
  border-radius: 12px; padding: 18px 20px;
  margin-bottom: 10px; border-left: 3px solid var(--border2);
}
.exam-review-item.review-correct { border-left-color: #10b981; }
.exam-review-item.review-wrong   { border-left-color: #ef4444; }
.exam-review-item.review-skipped { border-left-color: #64748b; }
.review-q-num  { font-size: 12px; font-weight: 700; color: var(--text3); margin-bottom: 6px; }
.review-q-text { font-size: 14px; color: var(--text); font-weight: 600; margin-bottom: 8px; }
.review-ans    { font-size: 13px; color: var(--text2); }
.review-correct-ans { color: #34d399; }
.review-exp    { font-size: 12px; color: var(--text3); margin-top: 8px; font-style: italic; }

/* ===================================================
   PREMIUM — CERT LOCK OVERLAY
   =================================================== */
.cert-card.cert-locked {
  position: relative;
  opacity: 0.92;
}

/* Upgrade button in navbar */
.btn-upgrade {
  padding: 7px 16px; border-radius: 20px;
  background: linear-gradient(135deg, #f59e0b, #fbbf24);
  border: none; color: #fff;
  font-size: 13px; font-weight: 700;
  cursor: pointer; font-family: 'Inter', sans-serif;
  transition: all 0.2s;
  box-shadow: 0 2px 10px rgba(245,158,11,0.35);
  white-space: nowrap;
}
.btn-upgrade:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(245,158,11,0.5);
}
.premium-active-badge {
  padding: 6px 14px; border-radius: 20px;
  background: rgba(245,158,11,0.12);
  border: 1px solid rgba(245,158,11,0.4);
  color: #d97706; font-size: 13px; font-weight: 700;
}

/* ===================================================
   PRICING MODAL
   =================================================== */
.pricing-modal-overlay {
  position: fixed; inset: 0; z-index: 2000;
  background: rgba(15,23,42,0.5);
  backdrop-filter: blur(6px);
  display: flex; align-items: center; justify-content: center;
  padding: 24px;
  animation: fadeIn 0.2s ease;
}
@keyframes fadeIn { from { opacity:0 } to { opacity:1 } }

/* Exam modals — white card design */
.exam-dark-modal {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 24px;
  padding: 32px 28px;
  max-width: 420px; width: 100%;
  position: relative;
  box-shadow: 0 24px 80px rgba(0,0,0,0.18), 0 4px 16px rgba(99,102,241,0.1);
  animation: slideUp 0.25s cubic-bezier(0.4,0,0.2,1);
  max-height: 90vh; overflow-y: auto;
  overscroll-behavior: contain;
}
.exam-modal-close {
  position: absolute; top: 14px; right: 14px;
  background: #f1f5f9; border: none; border-radius: 50%;
  width: 30px; height: 30px; cursor: pointer;
  font-size: 13px; color: #64748b;
  display: flex; align-items: center; justify-content: center;
  transition: all 0.2s;
}
.exam-modal-close:hover { background: #e2e8f0; color: #334155; }
.exam-choice-card {
  border: 1.5px solid #e2e8f0;
  border-radius: 14px; padding: 16px;
  margin-bottom: 10px; cursor: pointer;
  transition: all 0.2s;
  background: #f8fafc;
}
.exam-choice-card.active {
  border-color: #6366f1;
  background: #eef2ff;
}
.exam-choice-card.active:hover {
  border-color: #4f46e5;
  background: #e0e7ff;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(99,102,241,0.2);
}
.exam-choice-card.weekly {
  border-color: #10b981;
  background: linear-gradient(135deg, #f0fdf4, #dcfce7);
}
.exam-choice-card.weekly:hover {
  border-color: #059669;
  background: linear-gradient(135deg, #dcfce7, #bbf7d0);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(16,185,129,0.25);
}
.exam-choice-card.buy {
  border-color: #fcd34d;
  background: #fffbeb;
}
.exam-choice-card.buy:hover {
  border-color: #f59e0b;
  background: #fef3c7;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(245,158,11,0.2);
}
.exam-choice-card.disabled { cursor: default; opacity: 0.5; background: #f1f5f9; border-color: #e2e8f0; }
.al-logo-img { width: 44px; height: 44px; border-radius: 12px; }

.pricing-modal {
  background: #fff;
  border-radius: 24px;
  padding: 36px 32px;
  max-width: 520px; width: 100%;
  position: relative;
  box-shadow: 0 24px 80px rgba(37,99,235,0.18);
  animation: slideUp 0.25s cubic-bezier(0.4,0,0.2,1);
  max-height: 90vh;
  overflow-y: auto;
  overscroll-behavior: contain;
}
@keyframes slideUp {
  from { opacity:0; transform: translateY(20px) }
  to   { opacity:1; transform: translateY(0) }
}
.pricing-close {
  position: absolute; top: 16px; right: 16px;
  background: #f1f5f9; border: none; border-radius: 50%;
  width: 32px; height: 32px; cursor: pointer;
  font-size: 14px; color: #64748b;
  display: flex; align-items: center; justify-content: center;
  transition: all 0.2s;
}
.pricing-close:hover { background: #e2e8f0; color: #334155; }

.pricing-header { text-align: center; margin-bottom: 24px; }
.pricing-icon { font-size: 44px; margin-bottom: 12px; }
.pricing-header h2 {
  font-size: 22px; font-weight: 800; color: #0f172a; margin-bottom: 6px;
}
.pricing-header p { font-size: 14px; color: #64748b; }

.pricing-features {
  display: flex; flex-direction: column; gap: 8px;
  background: #f8fafc; border-radius: 14px;
  padding: 16px 18px; margin-bottom: 24px;
}
.pf-item {
  font-size: 14px; color: #1e293b;
  display: flex; align-items: center; gap: 10px;
}
.pf-item.free { color: #64748b; }
.pf-check { font-size: 16px; width: 20px; flex-shrink: 0; }

.pricing-plans {
  display: grid; grid-template-columns: 1fr 1fr; gap: 14px;
  margin-bottom: 20px;
}
.pricing-plan {
  border: 2px solid #e2e8f0; border-radius: 16px;
  padding: 20px 16px; text-align: center;
  position: relative; transition: all 0.2s;
}
.pricing-plan:hover { border-color: #93c5fd; }
.plan-featured {
  border-color: #2563eb;
  background: linear-gradient(160deg, #eff6ff, #dbeafe);
}
.plan-badge {
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  background: #2563eb; color: #fff;
  font-size: 11px; font-weight: 700; padding: 3px 12px;
  border-radius: 20px; white-space: nowrap;
}
.plan-name { font-size: 13px; font-weight: 700; color: #64748b; margin-bottom: 8px; text-transform: uppercase; letter-spacing: 0.5px; }
.plan-price {
  font-size: 28px; font-weight: 900; color: #0f172a; line-height: 1;
  margin-bottom: 4px;
}
.plan-price span { font-size: 13px; font-weight: 500; color: #64748b; }
.plan-sub { font-size: 12px; color: #94a3b8; margin-bottom: 16px; }
.plan-btn {
  display: block; padding: 11px 16px;
  border-radius: 10px; font-size: 14px; font-weight: 700;
  text-decoration: none; transition: all 0.2s;
  font-family: 'Inter', sans-serif;
}
.plan-monthly {
  background: #f1f5f9; color: #334155;
  border: 1.5px solid #e2e8f0;
}
.plan-monthly:hover { background: #e2e8f0; }
.plan-lifetime {
  background: linear-gradient(135deg, #1d4ed8, #2563eb);
  color: #fff;
  box-shadow: 0 4px 14px rgba(37,99,235,0.35);
}
.plan-lifetime:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(37,99,235,0.5);
}
.pricing-contact {
  text-align: center; font-size: 13px; color: #64748b;
}
.pricing-contact a { color: #2563eb; font-weight: 600; text-decoration: none; }
.pricing-contact a:hover { text-decoration: underline; }

/* Payment cards */
.pricing-payment { margin-top: 4px; }
.payment-title {
  font-size: 13px; font-weight: 700; color: #475569;
  text-transform: uppercase; letter-spacing: 0.5px;
  margin-bottom: 10px;
}
.payment-card {
  background: #f8fafc; border: 1px solid #e2e8f0;
  border-radius: 12px; padding: 12px 14px;
  margin-bottom: 8px;
}
.payment-bank {
  font-size: 12px; font-weight: 700; color: #64748b;
  margin-bottom: 8px; letter-spacing: 0.3px;
}
.payment-row {
  display: flex; align-items: center; gap: 8px;
  flex-wrap: wrap; margin-bottom: 4px;
}
.payment-row:last-child { margin-bottom: 0; }
.payment-label { font-size: 12px; color: #94a3b8; min-width: 44px; }
.payment-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px; font-weight: 600; color: #0f172a;
  letter-spacing: 0.5px; flex: 1;
}
.copy-btn {
  padding: 4px 10px; border-radius: 6px;
  background: #e0f2fe; border: 1px solid #bfdbfe;
  color: #1d4ed8; font-size: 11px; font-weight: 700;
  cursor: pointer; font-family: 'Inter', sans-serif;
  transition: all 0.2s; white-space: nowrap;
}
.copy-btn:hover { background: #bfdbfe; }
.copy-btn.copied { background: #d1fae5; border-color: #6ee7b7; color: #059669; }
.payment-note {
  font-size: 12px; color: #64748b; margin-top: 10px;
  text-align: center; line-height: 1.5;
}
.payment-note a { color: #2563eb; font-weight: 600; text-decoration: none; }
.payment-note a:hover { text-decoration: underline; }

/* Responsive exam */
@media (max-width: 768px) {
  .exam-layout { grid-template-columns: 1fr; }
  .exam-sidebar { position: static; border-top: 1px solid var(--border); }
  .exam-main { padding: 20px 16px; }
  .exam-dots-grid { grid-template-columns: repeat(8, 1fr); }
}

/* ===================================================
   MODAL OVERLAY (Profile / Settings / Help)
   =================================================== */
.note-modal-overlay {
  position: fixed; inset: 0; z-index: 2000;
  background: rgba(15,23,42,0.45);
  backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center;
  padding: 24px;
  animation: fadeIn 0.18s ease;
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
.note-modal {
  background: var(--card);
  border-radius: 20px;
  width: 100%;
  box-shadow: 0 24px 64px rgba(0,0,0,0.18), 0 4px 16px rgba(0,0,0,0.08);
  animation: slideUp 0.22s ease;
  overflow: hidden;
}
@keyframes slideUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}
.note-modal h3 {
  font-size: 17px; font-weight: 800; color: var(--text); margin-bottom: 6px;
}
.note-modal textarea {
  width: 100%; padding: 10px 12px;
  border: 1.5px solid var(--border); border-radius: 10px;
  font-size: 13px; font-family: 'Inter', sans-serif;
  color: var(--text); resize: vertical; outline: none;
  transition: border-color 0.2s; background: var(--card);
}
.note-modal textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
.note-actions {
  display: flex; justify-content: flex-end; gap: 10px; margin-top: 14px;
}
.btn-cancel {
  padding: 9px 18px; border-radius: 9px;
  background: var(--card2); border: 1px solid var(--border);
  color: var(--text2); font-size: 14px; font-weight: 600;
  cursor: pointer; font-family: 'Inter', sans-serif;
  transition: var(--transition);
}
.btn-cancel:hover { background: var(--bg2); }
.btn-save-note {
  padding: 9px 18px; border-radius: 9px;
  background: var(--accent); border: none;
  color: #fff; font-size: 14px; font-weight: 700;
  cursor: pointer; font-family: 'Inter', sans-serif;
  transition: var(--transition);
}
.btn-save-note:hover { background: #1d4ed8; }

/* ===================================================
   CONTENT ENHANCEMENTS — Exam Tips, Mistakes, Mnemonic
   =================================================== */

/* Comparison Table */
.comparison-card { margin: 20px 0; }
.comparison-title {
  font-size: 13px; font-weight: 800; color: var(--text);
  margin-bottom: 10px; text-transform: uppercase; letter-spacing: 0.4px;
}
.comparison-table-wrap {
  overflow-x: auto; border-radius: 12px;
  border: 1px solid var(--border);
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}
.comparison-table {
  width: 100%; border-collapse: collapse; font-size: 13px;
}
.comparison-table th {
  background: var(--bg2); padding: 10px 14px;
  text-align: left; font-weight: 700; color: var(--text2);
  font-size: 11px; text-transform: uppercase;
  letter-spacing: 0.5px; white-space: nowrap;
  border-bottom: 1px solid var(--border);
}
.comparison-table td {
  padding: 10px 14px; border-top: 1px solid var(--border);
  color: var(--text); vertical-align: top; line-height: 1.5;
}
.comparison-table tr:hover td { background: var(--bg2); }
.comparison-table td strong { color: var(--accent); }

/* Exam Tips */
.exam-tips-card {
  background: linear-gradient(135deg, #fffbeb, #fef9c3);
  border: 1.5px solid #fbbf24;
  border-radius: 14px; padding: 18px 20px; margin: 24px 0;
}
.exam-tips-title {
  font-size: 13px; font-weight: 800; color: #92400e;
  margin-bottom: 12px; letter-spacing: 0.3px;
}
.exam-tips-list { list-style: none; display: flex; flex-direction: column; gap: 9px; }
.exam-tips-list li {
  font-size: 13px; color: #78350f; line-height: 1.55;
  padding-left: 18px; position: relative;
}
.exam-tips-list li::before {
  content: '→'; position: absolute; left: 0;
  color: #f59e0b; font-weight: 800;
}

/* Common Mistakes */
.common-mistakes-card {
  background: linear-gradient(135deg, #fff1f2, #ffe4e6);
  border: 1.5px solid #fca5a5;
  border-radius: 14px; padding: 18px 20px; margin: 24px 0;
}
.cm-title {
  font-size: 13px; font-weight: 800; color: #991b1b;
  margin-bottom: 12px; letter-spacing: 0.3px;
}
.cm-list { list-style: none; display: flex; flex-direction: column; gap: 9px; }
.cm-list li {
  font-size: 13px; color: #7f1d1d; line-height: 1.55;
  padding-left: 18px; position: relative;
}
.cm-list li::before {
  content: '✗'; position: absolute; left: 0;
  color: #ef4444; font-weight: 800;
}

/* Mnemonic */
.mnemonic-card {
  background: linear-gradient(135deg, #ede9fe, #ddd6fe);
  border: 1.5px solid #a78bfa;
  border-radius: 14px; padding: 16px 20px; margin: 24px 0;
  font-size: 13px; color: #4c1d95; line-height: 1.65;
}
.mnemonic-card strong { color: #6d28d9; }

/* ===================================================
   EARLY BIRD BANNER
   =================================================== */
.early-bird-banner {
  background: linear-gradient(135deg, #dc2626 0%, #ea580c 50%, #d97706 100%);
  color: #fff;
  padding: 12px 24px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; flex-wrap: wrap;
  position: sticky; top: 64px; z-index: 90;
  box-shadow: 0 4px 20px rgba(220,38,38,0.35);
}
.eb-urgency {
  font-size: 10px; font-weight: 900;
  background: rgba(255,255,255,0.2);
  padding: 3px 10px; border-radius: 20px;
  letter-spacing: 1px; white-space: nowrap;
}
.eb-main {
  display: flex; align-items: center; gap: 10px;
  flex: 1; flex-wrap: wrap;
}
.eb-spots { font-size: 14px; font-weight: 600; }
.eb-spots strong { font-weight: 900; font-size: 16px; }
.eb-divider {
  width: 1px; height: 18px;
  background: rgba(255,255,255,0.35);
}
.eb-timer-label { font-size: 12px; opacity: 0.8; white-space: nowrap; }
.eb-countdown {
  font-family: 'JetBrains Mono', monospace;
  font-size: 15px; font-weight: 700;
  background: rgba(0,0,0,0.25);
  padding: 2px 10px; border-radius: 8px;
  letter-spacing: 0.5px; white-space: nowrap;
}
.eb-actions {
  display: flex; align-items: center; gap: 10px; flex-shrink: 0;
}
.eb-cta {
  background: #fff; color: #dc2626;
  border: none; border-radius: 10px;
  padding: 8px 18px; font-size: 13px; font-weight: 800;
  cursor: pointer; font-family: 'Inter', sans-serif;
  transition: all 0.2s; white-space: nowrap;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}
.eb-cta:hover { transform: translateY(-1px); box-shadow: 0 4px 12px rgba(0,0,0,0.2); }
.eb-channel {
  color: rgba(255,255,255,0.9);
  text-decoration: none; font-size: 13px; font-weight: 600;
  white-space: nowrap; transition: color 0.2s;
}
.eb-channel:hover { color: #fff; text-decoration: underline; }

/* ===================================================
   NEW PRICING MODAL (3-tier)
   =================================================== */
.pricing-modal {
  background: #fff;
  border-radius: 24px;
  padding: 36px 32px;
  max-width: 840px; width: 100%;
  position: relative;
  box-shadow: 0 24px 80px rgba(37,99,235,0.18);
  animation: slideUp 0.25s cubic-bezier(0.4,0,0.2,1);
  max-height: 92vh;
  overflow-y: auto;
  overscroll-behavior: contain;
}
.pm-early-bird-badge {
  text-align: center; margin-bottom: 16px;
  background: linear-gradient(135deg, #fef3c7, #fde68a);
  border: 1.5px solid #fbbf24;
  border-radius: 10px; padding: 8px 16px;
  font-size: 13px; font-weight: 700; color: #92400e;
}
.pricing-plans-grid {
  display: grid; grid-template-columns: 1fr 1.1fr 1.1fr;
  gap: 12px; margin-bottom: 24px;
}
.pm-plan {
  border: 2px solid #e2e8f0; border-radius: 18px;
  padding: 22px 16px 18px; text-align: center;
  position: relative; transition: all 0.2s;
  display: flex; flex-direction: column;
}
.pm-plan:hover { border-color: #93c5fd; }
.pm-free {
  background: #f8fafc;
  opacity: 0.85;
}
.pm-starter {
  border-color: #bfdbfe;
  background: linear-gradient(160deg, #fff, #f0f9ff);
}
.pm-pro.pm-featured {
  border-color: #2563eb;
  background: linear-gradient(160deg, #eff6ff, #dbeafe);
}
.pm-best-badge {
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  background: linear-gradient(135deg, #1d4ed8, #2563eb);
  color: #fff; font-size: 11px; font-weight: 800;
  padding: 4px 14px; border-radius: 20px; white-space: nowrap;
}
.pm-plan-name {
  font-size: 11px; font-weight: 800; text-transform: uppercase;
  letter-spacing: 0.8px; color: #64748b; margin-bottom: 12px;
}
.pm-billing-toggle {
  display: flex; gap: 4px; justify-content: center;
  margin-bottom: 10px;
  background: #f1f5f9; border-radius: 8px; padding: 3px;
}
.pm-billing-btn {
  flex: 1; padding: 5px 8px;
  border: none; border-radius: 6px;
  font-size: 11px; font-weight: 700;
  cursor: pointer; font-family: 'Inter', sans-serif;
  background: transparent; color: #64748b;
  transition: all 0.2s;
}
.pm-billing-btn.active {
  background: #fff; color: #1e293b;
  box-shadow: 0 1px 4px rgba(0,0,0,0.1);
}
.pm-plan-price {
  font-size: 30px; font-weight: 900; color: #0f172a;
  line-height: 1; margin-bottom: 4px;
}
.pm-plan-price span { font-size: 13px; font-weight: 500; color: #64748b; }
.pm-plan-sub { font-size: 11px; color: #94a3b8; margin-bottom: 14px; line-height: 1.4; }
.pm-features {
  list-style: none; text-align: left; margin-bottom: 14px;
  display: flex; flex-direction: column; gap: 6px; flex: 1;
}
.pm-features li { font-size: 12px; color: #475569; }
.pm-features li.pm-highlight { font-weight: 700; color: #1e293b; }
.pm-features li.pm-locked { color: #94a3b8; }
.pm-current-badge {
  font-size: 12px; color: #94a3b8; font-style: italic;
  margin-top: auto; padding-top: 8px;
}
.pm-cert-selector {
  background: #f8fafc; border-radius: 10px;
  padding: 10px; margin-bottom: 12px; text-align: left;
}
.pm-cert-selector-label {
  font-size: 11px; font-weight: 700; color: #64748b;
  text-transform: uppercase; letter-spacing: 0.5px;
  margin-bottom: 8px;
}
.pm-cert-options { display: flex; flex-direction: column; gap: 4px; }
.pm-cert-opt {
  padding: 7px 10px; border-radius: 8px;
  border: 1.5px solid #e2e8f0; background: #fff;
  font-size: 12px; font-weight: 600; color: #334155;
  cursor: pointer; font-family: 'Inter', sans-serif;
  transition: all 0.18s; text-align: left;
}
.pm-cert-opt:hover { border-color: #93c5fd; background: #f0f9ff; }
.pm-cert-opt.selected {
  border-color: #2563eb; background: #eff6ff; color: #1d4ed8;
  box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}
.pm-btn {
  display: block; padding: 11px 14px;
  border-radius: 11px; font-size: 13px; font-weight: 800;
  text-decoration: none; transition: all 0.2s;
  font-family: 'Inter', sans-serif; text-align: center;
  cursor: pointer; border: none; margin-top: auto;
}
.pm-starter-btn {
  background: #e0f2fe; color: #1d4ed8;
  border: 1.5px solid #bfdbfe;
}
.pm-starter-btn:hover { background: #bfdbfe; }
.pm-pro-btn {
  background: linear-gradient(135deg, #1d4ed8, #2563eb);
  color: #fff;
  box-shadow: 0 4px 14px rgba(37,99,235,0.35);
}
.pm-pro-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(37,99,235,0.5);
}
.pm-save-badge {
  font-size: 11px; font-weight: 700; color: #059669;
  text-align: center; margin-top: 6px;
}
.pm-payment {
  border-top: 1px solid #e2e8f0;
  padding-top: 20px; margin-top: 4px;
}
.pm-payment-title {
  font-size: 12px; font-weight: 800; color: #475569;
  text-transform: uppercase; letter-spacing: 0.7px;
  margin-bottom: 10px;
}
.pm-payment-cards {
  display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 8px;
  margin-bottom: 10px;
}
.pm-pay-card {
  background: #f8fafc; border: 1px solid #e2e8f0;
  border-radius: 10px; padding: 10px 12px;
}
.pm-pay-bank {
  font-size: 11px; font-weight: 700; color: #64748b;
  margin-bottom: 6px;
}
.pm-pay-row {
  display: flex; align-items: center; gap: 6px;
  margin-bottom: 4px; flex-wrap: wrap;
}
.pm-pay-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px; font-weight: 600; color: #0f172a;
  flex: 1; min-width: 0;
}
.pm-payment-note {
  font-size: 12px; color: #64748b; text-align: center; line-height: 1.5;
}
.pm-payment-note a { color: #2563eb; font-weight: 600; text-decoration: none; }

/* Cert card — lock overlay */
.cert-premium-overlay {
  position: absolute; inset: 0; z-index: 5;
  border-radius: inherit;
  background: rgba(10,18,38,0.82);
  backdrop-filter: blur(4px);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 8px;
  cursor: pointer;
  pointer-events: auto;
  transition: background 0.2s;
  padding: 20px;
}
.cert-premium-overlay:hover { background: rgba(10,18,38,0.9); }

/* Sertifikat nomi — overlay yuqori qism */
.cert-lock-top {
  display: flex; flex-direction: column;
  align-items: center; gap: 5px;
  text-align: center;
}
.cert-lock-emoji {
  font-size: 28px;
  line-height: 1;
  filter: drop-shadow(0 2px 6px rgba(0,0,0,0.4));
}
.cert-lock-name {
  font-size: 15px;
  font-weight: 800;
  color: #fff;
  letter-spacing: 0.01em;
  text-shadow: 0 1px 4px rgba(0,0,0,0.5);
}
.cert-lock-badge {
  font-size: 11px;
  font-weight: 700;
  color: rgba(255,255,255,0.6);
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 20px;
  padding: 2px 10px;
  letter-spacing: 0.04em;
}
.cert-lock-divider {
  width: 36px; height: 1px;
  background: rgba(255,255,255,0.15);
  margin: 2px 0;
}
.cert-crown { font-size: 26px; }
.cert-premium-label {
  font-size: 12px; font-weight: 700;
  color: #fff;
  text-align: center;
  background: linear-gradient(135deg, rgba(245,158,11,0.3), rgba(251,191,36,0.25));
  border: 1px solid rgba(251,191,36,0.5);
  border-radius: 20px;
  padding: 4px 14px;
}
.cert-unlock-hint {
  font-size: 11px;
  color: rgba(255,255,255,0.55);
  background: rgba(255,255,255,0.08);
  border-radius: 6px;
  padding: 3px 10px;
}

/* Responsive */
@media (max-width: 700px) {
  .pricing-plans-grid { grid-template-columns: 1fr; }
  .pm-payment-cards { grid-template-columns: 1fr; }
  .early-bird-banner { flex-direction: column; align-items: flex-start; top: 56px; }
  .eb-actions { width: 100%; }
  .eb-cta { flex: 1; text-align: center; }
}

/* ===================================================
   CERT INFO PAGE — Sertifikat haqida bo'limi
   =================================================== */

/* ---- Tabs ---- */
.cert-page-tabs {
  display: flex;
  gap: 4px;
  margin: 28px 0 0;
  background: var(--card2);
  border: 1.5px solid var(--border);
  border-radius: 12px;
  padding: 4px;
}
.cpt-tab {
  flex: 1;
  padding: 10px 18px;
  border: none;
  border-radius: 9px;
  background: transparent;
  color: var(--text3);
  font-size: 0.9rem;
  font-weight: 600;
  font-family: 'Inter', sans-serif;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}
.cpt-tab:hover { background: var(--bg2); color: var(--text); }
.cpt-tab.active {
  background: var(--cert-color, var(--accent));
  color: #fff;
  box-shadow: 0 2px 10px var(--cert-glow, var(--accent-glow));
}

/* ---- Main wrapper ---- */
.cert-info-page {
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* ---- Section ---- */
.ci-section {
  background: var(--card);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}
.ci-section-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--cert-color, var(--accent));
  margin-bottom: 16px;
  letter-spacing: 0.01em;
}

/* ---- Overview ---- */
.ci-overview-section { border-left: 4px solid var(--cert-color, var(--accent)); }
.ci-tagline {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
  font-style: italic;
  line-height: 1.5;
}
.ci-overview-text {
  font-size: 0.92rem;
  color: var(--text2);
  line-height: 1.75;
}

/* ---- Purpose cards ---- */
.ci-purpose-grid {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.ci-purpose-card {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  background: var(--card2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
}
.ci-purpose-icon {
  font-size: 1.5rem;
  line-height: 1;
  flex-shrink: 0;
  margin-top: 2px;
}
.ci-purpose-title {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--cert-color, var(--accent));
  margin-bottom: 5px;
}
.ci-purpose-body p {
  font-size: 0.88rem;
  color: var(--text2);
  line-height: 1.65;
}

/* ---- Detail card (key-value rows) ---- */
.ci-detail-card {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.ci-detail-row {
  display: flex;
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px solid var(--border);
  align-items: flex-start;
}
.ci-detail-row:last-child { border-bottom: none; }
.ci-detail-key {
  flex-shrink: 0;
  width: 180px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text3);
}
.ci-detail-val {
  font-size: 0.87rem;
  color: var(--text);
  line-height: 1.6;
  flex: 1;
}

/* Online requirements box */
.ci-online-req {
  background: var(--card2);
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 12px 16px;
  margin-top: 14px;
}
.ci-online-req-title {
  font-size: 0.84rem;
  font-weight: 700;
  color: var(--text2);
  margin-bottom: 6px;
}
.ci-online-req p {
  font-size: 0.84rem;
  color: var(--text2);
  line-height: 1.65;
}

/* ---- Preparation resources ---- */
.ci-prep-resources {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 16px;
}
.ci-res-col {
  background: var(--card2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px;
}
.ci-res-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text2);
  margin-bottom: 10px;
}
.ci-res-col ul, .ci-exam-tips ul {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 7px;
}
.ci-res-col li, .ci-exam-tips li {
  font-size: 0.83rem;
  color: var(--text2);
  line-height: 1.55;
}
.ci-exam-tips {
  background: linear-gradient(135deg, rgba(var(--cert-color-rgb, 37,99,235),0.05), var(--card2));
  border: 1px solid var(--cert-color, var(--accent));
  border-radius: 10px;
  padding: 14px;
  margin-top: 14px;
}

/* ---- Benefits ---- */
.ci-benefits-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.ci-benefit-item {
  background: var(--card2);
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 11px 14px;
  font-size: 0.85rem;
  color: var(--text2);
  line-height: 1.5;
}

/* ---- Roadmap ---- */
.ci-roadmap {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}
.ci-road-step {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--card2);
  border: 1.5px solid var(--border);
  border-radius: 10px;
  padding: 10px 14px;
  min-width: 120px;
  flex: 1;
}
.ci-road-step.active {
  border-color: var(--cert-color, var(--accent));
  background: var(--cert-glow, var(--accent-glow));
}
.ci-road-num {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--border2);
  color: var(--text2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.78rem;
  font-weight: 700;
  flex-shrink: 0;
}
.ci-road-step.active .ci-road-num {
  background: var(--cert-color, var(--accent));
  color: #fff;
}
.ci-road-label {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text);
}
.ci-road-desc {
  font-size: 0.75rem;
  color: var(--text3);
  margin-top: 2px;
}
.ci-road-arrow {
  font-size: 1rem;
  color: var(--text3);
  padding: 0 2px;
  flex-shrink: 0;
}

/* ---- Official links ---- */
.ci-links {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.ci-link-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 18px;
  background: var(--card2);
  border: 1.5px solid var(--cert-color, var(--accent));
  border-radius: 9px;
  color: var(--cert-color, var(--accent));
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  font-family: 'Inter', sans-serif;
}
.ci-link-btn:hover {
  background: var(--cert-color, var(--accent));
  color: #fff;
  box-shadow: 0 4px 14px var(--cert-glow, var(--accent-glow));
  transform: translateY(-1px);
}

/* ---- Empty state ---- */
.ci-empty {
  padding: 40px;
  text-align: center;
  color: var(--text3);
  font-size: 0.9rem;
}

/* ---- Responsive ---- */
@media (max-width: 700px) {
  .ci-prep-resources { grid-template-columns: 1fr; }
  .ci-benefits-grid { grid-template-columns: 1fr; }
  .ci-roadmap { flex-direction: column; align-items: stretch; }
  .ci-road-arrow { display: none; }
  .ci-detail-key { width: 130px; font-size: 0.78rem; }
  .ci-detail-val { font-size: 0.83rem; }
  .ci-links { flex-direction: column; }
  .ci-link-btn { text-align: center; justify-content: center; }
  .cert-page-tabs { flex-wrap: nowrap; }
  .cpt-tab { font-size: 0.83rem; padding: 9px 12px; }
}

/* ================================================================
   BADGE TIZIMI
   ================================================================ */
.badges-section {
  margin: 0 0 28px;
  padding: 20px 24px;
  background: linear-gradient(135deg, rgba(99,102,241,0.08), rgba(167,139,250,0.05));
  border: 1px solid rgba(99,102,241,0.2);
  border-radius: 16px;
}
.badges-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text2);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.badge-count {
  background: rgba(99,102,241,0.15);
  color: #818cf8;
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: 20px;
  font-weight: 700;
}
.badges-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.badge-chip {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: rgba(255,255,255,0.05);
  border: 1px solid color-mix(in srgb, var(--badge-color) 40%, transparent);
  border-radius: 20px;
  cursor: default;
  transition: transform 0.15s;
}
.badge-chip:hover { transform: scale(1.05); }
.badge-chip-icon { font-size: 16px; line-height: 1; }
.badge-chip-name {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--badge-color, #818cf8);
}

/* Badge toast */
.badge-toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: #fff;
  border-radius: 16px;
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 14px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.18), 0 2px 8px rgba(99,102,241,0.15);
  border: 1.5px solid rgba(99,102,241,0.2);
  z-index: 9999;
  transform: translateX(120%);
  transition: transform 0.35s cubic-bezier(0.34,1.56,0.64,1);
  max-width: 300px;
}
.badge-toast.show { transform: translateX(0); }

/* ================================================================
   SERTIFIKAT DOWNLOAD BUTTON
   ================================================================ */
.btn-cert-download {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  background: linear-gradient(135deg, #059669, #10b981);
  color: #fff;
  border: none;
  border-radius: 12px;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  font-family: inherit;
  box-shadow: 0 4px 16px rgba(16,185,129,0.35);
  transition: transform 0.15s, box-shadow 0.15s;
}
.btn-cert-download:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(16,185,129,0.45);
}

@media (max-width: 600px) {
  .badges-section { padding: 16px; }
  .badge-toast { right: 12px; bottom: 12px; left: 12px; max-width: unset; }
  .btn-cert-download { font-size: 0.85rem; padding: 10px 16px; }
}