:root{
  --bg:#0B0F1A;
  --bg-soft:#131A2B;
  --card:#171F33;
  --line:rgba(255,255,255,0.08);
  --lime:#C6FF3D;
  --cyan:#3DE1FF;
  --orange:#FF8A3D;
  --red:#FF5C5C;
  --text:#F2F5FA;
  --text-dim:#8C97B3;
  --radius:16px;
  --maxw:520px;
}

*{box-sizing:border-box;}
html,body{margin:0;padding:0;}

body{
  background:
    radial-gradient(circle at 10% -10%, rgba(61,225,255,0.12), transparent 40%),
    radial-gradient(circle at 100% 0%, rgba(198,255,61,0.10), transparent 35%),
    var(--bg);
  color:var(--text);
  font-family:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing:antialiased;
  line-height:1.5;
  min-height:100vh;
  display:flex;
  flex-direction:column;
}

a{color:inherit; text-decoration:none;}

h1,h2,h3,.display{
  font-family:"Rajdhani", "Segoe UI", sans-serif;
  font-weight:700;
  letter-spacing:0.3px;
}

/* ---------------- HEADER ---------------- */
.site-header{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:14px 18px;
  max-width:var(--maxw);
  width:100%;
  margin:0 auto;
}
.logo{
  display:flex;
  align-items:center;
  gap:8px;
  font-family:"Rajdhani", sans-serif;
  font-weight:700;
  font-size:19px;
  letter-spacing:0.5px;
}
.logo .dot{
  width:10px;height:10px;border-radius:50%;
  background:linear-gradient(135deg,var(--lime),var(--cyan));
  box-shadow:0 0 10px rgba(198,255,61,0.6);
}
.site-nav{
  display:flex;
  gap:16px;
  font-size:13px;
  color:var(--text-dim);
  font-weight:600;
}
.site-nav a:hover{color:var(--lime);}

/* ---------------- LAYOUT ---------------- */
main{
  flex:1;
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding:8px 18px 40px;
}

/* ---------------- HERO ---------------- */
.hero{
  text-align:center;
  padding:14px 0 22px;
}
.eyebrow{
  display:inline-block;
  font-size:11px;
  font-weight:700;
  letter-spacing:1.5px;
  text-transform:uppercase;
  color:var(--lime);
  background:rgba(198,255,61,0.08);
  border:1px solid rgba(198,255,61,0.3);
  padding:5px 12px;
  border-radius:999px;
  margin-bottom:14px;
}
.hero h1{
  font-size:clamp(26px,7.5vw,36px);
  line-height:1.15;
  margin:0 0 10px;
}
.hero h1 span{color:var(--lime);}
.hero p{
  color:var(--text-dim);
  font-size:14.5px;
  max-width:340px;
  margin:0 auto;
}

/* signature: scanning bar loader look, gaming HUD feel */
.hud-bar{
  height:3px;
  width:120px;
  margin:20px auto 0;
  background:var(--line);
  border-radius:2px;
  overflow:hidden;
  position:relative;
}
.hud-bar i{
  position:absolute;
  top:0; left:-40%;
  height:100%;
  width:40%;
  background:linear-gradient(90deg, transparent, var(--cyan), var(--lime), transparent);
  animation:scan 1.8s ease-in-out infinite;
}
@keyframes scan{
  0%{left:-40%;}
  100%{left:100%;}
}
@media (prefers-reduced-motion: reduce){
  .hud-bar i{animation:none; left:0; width:100%;}
}

/* ---------------- BUTTONS ---------------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-family:"Rajdhani", sans-serif;
  font-weight:700;
  font-size:16px;
  letter-spacing:0.4px;
  padding:14px 26px;
  border-radius:999px;
  border:none;
  cursor:pointer;
  -webkit-tap-highlight-color:transparent;
  min-height:50px;
  width:100%;
}
.btn:active{transform:scale(0.98);}
.btn-primary{
  background:linear-gradient(90deg, var(--lime), var(--cyan));
  color:#0B0F1A;
  box-shadow:0 8px 24px rgba(61,225,255,0.25);
}
.btn-ghost{
  background:rgba(255,255,255,0.04);
  border:1.5px solid var(--line);
  color:var(--text);
}
.btn-dino{
  background:linear-gradient(90deg, var(--orange), #FFC93D);
  color:#221000;
}

/* ---------------- CATEGORY CARDS ---------------- */
.cat-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:12px;
  margin:18px 0 26px;
}
.cat-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:16px 14px;
  display:flex;
  flex-direction:column;
  gap:8px;
  min-height:110px;
}
.cat-card .icon{font-size:24px;}
.cat-card h3{font-size:15px; margin:0;}
.cat-card p{font-size:11.5px; color:var(--text-dim); margin:0;}
.cat-card.locked{opacity:0.5;}
.cat-card.active{
  border-color:rgba(198,255,61,0.4);
  background:linear-gradient(160deg, rgba(198,255,61,0.06), var(--card));
}
.tag-soon{
  font-size:9.5px;
  font-weight:700;
  letter-spacing:0.5px;
  text-transform:uppercase;
  color:var(--text-dim);
  background:rgba(255,255,255,0.06);
  padding:2px 8px;
  border-radius:999px;
  width:fit-content;
}

/* ---------------- INTRO / SEO TEXT ---------------- */
.intro{
  background:var(--bg-soft);
  border-radius:var(--radius);
  padding:16px 18px;
  font-size:13.5px;
  color:var(--text-dim);
  margin-bottom:20px;
  border:1px solid var(--line);
}
.intro strong{color:var(--text);}

.article h2{font-size:17px; margin:26px 0 8px;}
.article p{color:var(--text-dim); font-size:13.5px; margin:0 0 12px;}
.article ul{color:var(--text-dim); font-size:13.5px; padding-left:18px; margin:0 0 12px;}
.article li{margin-bottom:6px;}

/* ---------------- QUIZ CARD ---------------- */
.card{
  background:var(--card);
  border-radius:var(--radius);
  padding:22px 18px 20px;
  box-shadow:0 12px 30px rgba(0,0,0,0.35);
  border:1px solid var(--line);
}

.progress{display:flex; gap:6px; margin-bottom:16px;}
.dot{flex:1; height:5px; border-radius:4px; background:rgba(255,255,255,0.10); overflow:hidden;}
.dot i{display:block; height:100%; width:0%; background:linear-gradient(90deg,var(--cyan),var(--lime)); transition:width .3s ease;}
.dot.done i, .dot.active i{width:100%;}

.q-count{
  font-size:11.5px; font-weight:700; color:var(--cyan);
  text-transform:uppercase; letter-spacing:1px; margin-bottom:6px;
}
.q-text{
  font-family:"Rajdhani", sans-serif; font-weight:700;
  font-size:19px; margin:0 0 16px; line-height:1.3;
}

.options{display:flex; flex-direction:column; gap:10px;}
.opt{
  display:flex; align-items:center; gap:10px; width:100%;
  text-align:left; background:rgba(255,255,255,0.04);
  border:1.5px solid var(--line); color:var(--text);
  font-size:15px; font-weight:600; padding:13px 14px;
  border-radius:14px; cursor:pointer; -webkit-tap-highlight-color:transparent;
  transition:transform .12s ease, border-color .15s ease, background .15s ease;
  min-height:48px;
}
.opt:active{transform:scale(0.98);}
.opt.correct{background:rgba(198,255,61,0.12); border-color:var(--lime); color:var(--lime);}
.opt.wrong{background:rgba(255,92,92,0.14); border-color:var(--red); color:var(--red);}
.opt[disabled]{cursor:default;}
.opt .badge{
  flex-shrink:0; width:22px; height:22px; border-radius:50%;
  border:1.5px solid rgba(255,255,255,0.3); font-size:12px;
  display:flex; align-items:center; justify-content:center;
}
.opt.correct .badge{border-color:var(--lime); background:var(--lime); color:#0c2b0c;}
.opt.wrong .badge{border-color:var(--red); background:var(--red); color:#3a0d0d;}

/* ---------------- RESULT PAGE ---------------- */
.result-hero{text-align:center; padding:10px 0 6px;}
.result-hero .emoji{font-size:52px; margin-bottom:6px;}
.result-hero h1{font-size:24px; margin:0 0 6px;}
.result-hero p.score{color:var(--text-dim); font-size:14px; margin:0 0 4px;}

.stat-strip{
  display:flex; gap:10px; margin:20px 0;
}
.stat{
  flex:1; background:var(--card); border:1px solid var(--line);
  border-radius:14px; padding:12px; text-align:center;
}
.stat b{display:block; font-family:"Rajdhani",sans-serif; font-size:20px; color:var(--lime);}
.stat span{font-size:11px; color:var(--text-dim);}

.action-stack{display:flex; flex-direction:column; gap:12px; margin-top:6px;}

.disclaimer{
  font-size:11.5px; color:var(--text-dim); text-align:center;
  margin-top:18px; line-height:1.5;
}

/* ---------------- FOOTER ---------------- */
.site-footer{
  border-top:1px solid var(--line);
  padding:18px;
  text-align:center;
}
.site-footer .foot-nav{
  display:flex; justify-content:center; gap:14px;
  font-size:12px; color:var(--text-dim); margin-bottom:8px; flex-wrap:wrap;
}
.site-footer .foot-nav a:hover{color:var(--cyan);}
.site-footer .copy{font-size:11px; color:rgba(140,151,179,0.6);}