/* Quiz section — young, energetic visual identity on the same dark base */
:root{
  --qz-bg:#080c18; --qz-surf:#0f1628; --qz-card:#141d35; --qz-input:#1e2a45;
  --qz-tp:#f0f4ff; --qz-ts:#8fa3cc; --qz-tm:#6b82a8;
  --qz-teal:#00d4aa; --qz-violet:#8b5cf6; --qz-amber:#f59e0b; --qz-red:#ef4444;
  --qz-bd:rgba(255,255,255,0.08);
  --qz-f:'DM Sans','Segoe UI',system-ui,sans-serif;
  --qz-fd:'Poppins','Segoe UI',system-ui,sans-serif;
}
body{background:var(--qz-bg);color:var(--qz-tp);font-family:var(--qz-f);}

/* ===== HUB PAGE ===== */
.quiz-hero{max-width:820px;margin:0 auto;padding:48px 20px 24px;text-align:center;}
.quiz-breadcrumb{font-size:0.8rem;color:var(--qz-tm);text-align:left;max-width:1200px;margin:0 auto 16px;padding:0 20px;}
.quiz-breadcrumb a{color:var(--qz-tm);}
.quiz-hero h1{font-family:var(--qz-fd);font-size:2.3rem;font-weight:800;margin-bottom:12px;
  background:linear-gradient(135deg,var(--qz-teal),var(--qz-violet));
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;}
.quiz-sub{color:var(--qz-ts);font-size:1.05rem;line-height:1.6;max-width:600px;margin:0 auto;}
.quiz-stats-row{display:flex;justify-content:center;gap:28px;margin-top:24px;flex-wrap:wrap;}
.quiz-stat{text-align:center;}
.quiz-stat__num{font-family:var(--qz-fd);font-size:1.6rem;font-weight:800;color:var(--qz-teal);text-shadow:0 0 16px rgba(0,212,170,0.4);}
.quiz-stat__label{font-size:0.75rem;color:var(--qz-tm);text-transform:uppercase;letter-spacing:0.05em;}

.quiz-cats{max-width:1200px;margin:0 auto;padding:24px 20px 64px;}
.quiz-cats-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:18px;}
.quiz-cat-card{background:var(--qz-card);border:1.5px solid var(--qz-bd);border-radius:18px;padding:24px;text-decoration:none;
  display:block;position:relative;overflow:hidden;transition:transform 0.2s,border-color 0.2s,box-shadow 0.2s;}
.quiz-cat-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--qz-teal),var(--qz-violet));opacity:0;transition:opacity 0.2s;}
.quiz-cat-card:hover{transform:translateY(-4px);border-color:var(--qz-teal);
  box-shadow:0 12px 32px rgba(0,212,170,0.15);text-decoration:none;}
.quiz-cat-card:hover::before{opacity:1;}
.quiz-cat-card.pending{opacity:0.55;cursor:default;}
.quiz-cat-card.pending:hover{transform:none;border-color:var(--qz-bd);box-shadow:none;}
.quiz-cat-icon{font-size:2.1rem;margin-bottom:10px;}
.quiz-cat-title{font-family:var(--qz-fd);font-weight:700;font-size:1.08rem;color:var(--qz-tp);margin-bottom:6px;}
.quiz-cat-desc{font-size:0.85rem;color:var(--qz-ts);line-height:1.5;margin-bottom:14px;}
.quiz-cat-meta{display:flex;gap:10px;flex-wrap:wrap;font-size:0.72rem;color:var(--qz-tm);}
.quiz-cat-badge{background:rgba(0,212,170,0.12);color:var(--qz-teal);padding:3px 10px;border-radius:20px;font-weight:600;}
.quiz-cat-badge.pending-badge{background:rgba(139,92,246,0.12);color:var(--qz-violet);}

/* ===== QUIZ PLAY PAGE ===== */
.qplay-header{max-width:680px;margin:0 auto;padding:28px 20px 0;}
.qplay-breadcrumb{font-size:0.8rem;color:var(--qz-tm);margin-bottom:16px;}
.qplay-breadcrumb a{color:var(--qz-tm);}
.qplay-top{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:20px;flex-wrap:wrap;}
.qplay-title{font-family:var(--qz-fd);font-size:1.4rem;font-weight:800;}

.qplay-progress-wrap{display:flex;align-items:center;gap:14px;}
.qplay-ring{position:relative;width:52px;height:52px;flex-shrink:0;}
.qplay-ring svg{transform:rotate(-90deg);width:52px;height:52px;}
.qplay-ring circle{fill:none;stroke-width:5;}
.qplay-ring .bg{stroke:var(--qz-bd);}
.qplay-ring .fg{stroke:var(--qz-teal);stroke-linecap:round;transition:stroke-dashoffset 0.4s ease;filter:drop-shadow(0 0 4px rgba(0,212,170,0.6));}
.qplay-ring__num{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-family:var(--qz-fd);font-size:0.78rem;font-weight:700;}

.qplay-streak{display:flex;align-items:center;gap:6px;background:rgba(245,158,11,0.1);border:1px solid rgba(245,158,11,0.3);
  border-radius:20px;padding:6px 14px;font-family:var(--qz-fd);font-weight:700;font-size:0.9rem;color:var(--qz-amber);}
.qplay-streak.hot{box-shadow:0 0 16px rgba(245,158,11,0.4);}

.qplay-body{max-width:680px;margin:0 auto;padding:8px 20px 80px;}
.qplay-level-tag{display:inline-block;font-size:0.72rem;font-weight:700;padding:4px 12px;border-radius:20px;margin-bottom:16px;letter-spacing:0.03em;}
.qplay-level-tag.basic{background:rgba(0,212,170,0.12);color:var(--qz-teal);}
.qplay-level-tag.intermediate{background:rgba(245,158,11,0.12);color:var(--qz-amber);}
.qplay-level-tag.advanced{background:rgba(139,92,246,0.15);color:var(--qz-violet);}

.qplay-card{background:var(--qz-card);border:1.5px solid var(--qz-bd);border-radius:20px;padding:28px;animation:qFadeIn 0.3s ease;}
@keyframes qFadeIn{from{opacity:0;transform:translateY(8px);}to{opacity:1;transform:translateY(0);}}
.qplay-q{font-family:var(--qz-fd);font-size:1.15rem;font-weight:700;line-height:1.4;margin-bottom:20px;}
.qplay-opts{display:flex;flex-direction:column;gap:10px;}
.qplay-opt{background:var(--qz-input);border:1.5px solid var(--qz-bd);border-radius:12px;padding:14px 18px;
  color:var(--qz-tp);font-family:var(--qz-f);font-size:0.95rem;text-align:left;cursor:pointer;transition:all 0.15s;}
.qplay-opt:hover:not(:disabled){border-color:var(--qz-teal);background:rgba(0,212,170,0.06);}
.qplay-opt:disabled{cursor:default;}
.qplay-opt.correct{border-color:var(--qz-teal);background:rgba(0,212,170,0.15);color:var(--qz-teal);font-weight:600;
  box-shadow:0 0 20px rgba(0,212,170,0.2);}
.qplay-opt.wrong{border-color:var(--qz-red);background:rgba(239,68,68,0.12);color:#fca5a5;}
.qplay-opt.dim{opacity:0.4;}

.qplay-feedback{margin-top:18px;padding:16px 18px;border-radius:14px;animation:qFadeIn 0.3s ease;}
.qplay-feedback.win{background:rgba(0,212,170,0.08);border:1px solid rgba(0,212,170,0.3);}
.qplay-feedback.lose{background:rgba(239,68,68,0.08);border:1px solid rgba(239,68,68,0.3);}
.qplay-feedback__title{font-family:var(--qz-fd);font-weight:700;margin-bottom:6px;}
.qplay-feedback.win .qplay-feedback__title{color:var(--qz-teal);}
.qplay-feedback.lose .qplay-feedback__title{color:#fca5a5;}
.qplay-hint-link{display:inline-flex;align-items:center;gap:6px;margin-top:10px;font-size:0.85rem;font-weight:600;
  color:var(--qz-violet);text-decoration:none;}
.qplay-hint-link:hover{text-decoration:underline;}

.qplay-next-btn{margin-top:20px;width:100%;padding:14px;border-radius:12px;border:none;cursor:pointer;
  font-family:var(--qz-fd);font-weight:700;font-size:1rem;color:#04140f;
  background:linear-gradient(135deg,var(--qz-teal),#00e6bd);transition:transform 0.15s,box-shadow 0.15s;}
.qplay-next-btn:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(0,212,170,0.3);}

/* End screen */
.qplay-end{text-align:center;padding:20px 0;}
.qplay-end__emoji{font-size:3.5rem;margin-bottom:12px;}
.qplay-end__score{font-family:var(--qz-fd);font-size:2.4rem;font-weight:800;
  background:linear-gradient(135deg,var(--qz-teal),var(--qz-violet));
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;margin-bottom:6px;}
.qplay-end__label{color:var(--qz-ts);margin-bottom:24px;}
.qplay-end-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;}
.qplay-end-btn{padding:12px 24px;border-radius:12px;font-family:var(--qz-fd);font-weight:700;font-size:0.9rem;
  text-decoration:none;transition:transform 0.15s;}
.qplay-end-btn:hover{transform:translateY(-2px);text-decoration:none;}
.qplay-end-btn.primary{background:linear-gradient(135deg,var(--qz-teal),#00e6bd);color:#04140f;}
.qplay-end-btn.secondary{background:var(--qz-card);border:1.5px solid var(--qz-bd);color:var(--qz-tp);}

@media(max-width:640px){
  .quiz-hero h1{font-size:1.7rem;}
  .qplay-title{font-size:1.15rem;}
  .qplay-q{font-size:1.02rem;}
}

/* Lifetime stats dashboard — persists via localStorage. Solid backgrounds + near-white numbers for guaranteed contrast (verified 15:1+), violet reserved for accent/icons only. */
.qplay-dashboard{display:flex;gap:8px;flex-wrap:wrap;background:var(--qz-card);border:1.5px solid rgba(139,92,246,0.35);
  border-radius:14px;padding:10px 14px;box-shadow:0 0 24px rgba(139,92,246,0.08);}
.qplay-dash-item{display:flex;align-items:center;gap:6px;padding:2px 10px;}
.qplay-dash-item + .qplay-dash-item{border-left:1px solid var(--qz-bd);}
.qplay-dash-icon{font-size:1rem;line-height:1;}
.qplay-dash-num{font-family:var(--qz-fd);font-weight:800;font-size:1.05rem;color:var(--qz-tp);line-height:1;}
.qplay-dash-label{font-size:0.62rem;color:var(--qz-ts);text-transform:uppercase;letter-spacing:0.04em;font-weight:700;
  display:block;margin-top:1px;}
.qplay-dash-num.correct-num{color:#5eead4;}
.qplay-dash-num.wrong-num{color:#fca5a5;}
.qplay-dash-num.cats-num{color:#c4b5fd;}
@media(max-width:480px){
  .qplay-dashboard{gap:0;padding:8px 4px;}
  .qplay-dash-item{padding:2px 8px;gap:4px;}
  .qplay-dash-num{font-size:0.9rem;}
  .qplay-dash-label{font-size:0.56rem;}
}

/* My Stats dashboard page */
.stats-hero{max-width:800px;margin:0 auto;padding:48px 20px 8px;text-align:center;}
.stats-breadcrumb{font-size:0.8rem;color:var(--qz-tm);text-align:left;max-width:1000px;margin:0 auto 16px;padding:0 20px;}
.stats-breadcrumb a{color:var(--qz-tm);}
.stats-hero h1{font-family:var(--qz-fd);font-size:2.1rem;font-weight:800;margin-bottom:10px;
  background:linear-gradient(135deg,var(--qz-teal),var(--qz-violet));
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;}
.stats-sub{color:var(--qz-ts);font-size:0.98rem;max-width:520px;margin:0 auto;}

.stats-body{max-width:900px;margin:0 auto;padding:24px 20px 64px;}
.stats-summary-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:14px;margin-bottom:36px;}
.stats-summary-card{background:var(--qz-card);border:1.5px solid var(--qz-bd);border-radius:16px;padding:20px;text-align:center;}
.stats-summary-card__num{font-family:var(--qz-fd);font-size:1.8rem;font-weight:800;
  background:linear-gradient(135deg,var(--qz-teal),var(--qz-violet));
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;}
.stats-summary-card__label{font-size:0.78rem;color:var(--qz-tm);margin-top:4px;}

.stats-cat-row{display:flex;align-items:center;gap:16px;padding:14px 0;border-bottom:1px solid var(--qz-bd);}
.stats-cat-row:last-child{border-bottom:none;}
.stats-cat-name{font-family:var(--qz-fd);font-weight:700;font-size:0.95rem;min-width:180px;}
.stats-cat-bar-wrap{flex:1;height:10px;background:var(--qz-input);border-radius:6px;overflow:hidden;}
.stats-cat-bar-fill{height:100%;background:linear-gradient(90deg,var(--qz-teal),var(--qz-violet));border-radius:6px;transition:width 0.6s ease;}
.stats-cat-pct{font-family:var(--qz-fd);font-weight:700;min-width:50px;text-align:right;color:var(--qz-teal);}
.stats-cat-count{font-size:0.75rem;color:var(--qz-tm);min-width:70px;text-align:right;}

.stats-empty{text-align:center;padding:40px 20px;color:var(--qz-ts);}
.stats-privacy-note{margin-top:32px;padding:16px 18px;background:rgba(255,255,255,0.03);border:1px solid var(--qz-bd);
  border-radius:12px;font-size:0.82rem;color:var(--qz-tm);line-height:1.6;}
.stats-reset-btn{margin-top:16px;padding:10px 20px;border-radius:10px;border:1.5px solid rgba(239,68,68,0.4);
  background:rgba(239,68,68,0.08);color:#fca5a5;font-family:var(--qz-f);font-size:0.85rem;font-weight:600;cursor:pointer;}
.stats-reset-btn:hover{background:rgba(239,68,68,0.15);}

@media(max-width:640px){
  .stats-hero h1{font-size:1.6rem;}
  .stats-cat-name{min-width:120px;font-size:0.85rem;}
}

/* Quiz hub — grouped category sections */
.quiz-group-label{font-family:var(--qz-fd);font-size:0.85rem;font-weight:700;color:var(--qz-teal);
  text-transform:uppercase;letter-spacing:0.06em;margin:36px 0 14px;padding-bottom:8px;border-bottom:1px solid var(--qz-bd);}
.quiz-group-label:first-child{margin-top:0;}