:root{
  --navy-1:#15223d;
  --navy-2:#1c2e52;
  --navy-3:#24395f;
  --gold:#c9a227;
  --gold-soft:#e3c565;
  --cream:#faf6ec;
  --paper:#ffffff;
  --ink:#22283a;
  --muted:#6b7386;
  --ok:#2e9e5b;
  --bad:#d64545;
  --radius:14px;
  --shadow:0 10px 30px rgba(21,34,61,.10);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"Tajawal","Segoe UI",Tahoma,sans-serif;
  background:var(--cream);
  color:var(--ink);
  min-height:100vh;
  display:flex;
  flex-direction:column;
}
.top-header{
  background:linear-gradient(135deg,var(--navy-1),var(--navy-2));
  color:#fff;
  padding:14px 22px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
  position:sticky;
  top:0;
  z-index:50;
  box-shadow:0 4px 18px rgba(21,34,61,.25);
}
.brand{display:flex;align-items:center;gap:12px}
.brand-mark{
  width:46px;height:46px;border-radius:12px;
  background:var(--gold);color:var(--navy-1);
  font-size:26px;font-weight:800;
  display:flex;align-items:center;justify-content:center;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-name{font-weight:800;font-size:19px;letter-spacing:.2px}
.brand-sub{font-size:12px;color:var(--gold-soft)}
.top-nav{display:flex;gap:8px;flex-wrap:wrap}
.nav-btn{
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.22);
  color:#fff;padding:9px 16px;border-radius:10px;
  font-family:inherit;font-size:14px;font-weight:700;cursor:pointer;
  transition:.2s;
}
.nav-btn:hover{background:var(--gold);color:var(--navy-1);border-color:var(--gold)}

main{flex:1;width:100%;max-width:1020px;margin:0 auto;padding:26px 18px 48px}

.hero{
  background:linear-gradient(135deg,var(--navy-1) 0%,var(--navy-2) 70%,var(--navy-3) 100%);
  color:#fff;border-radius:20px;padding:30px 28px;
  position:relative;overflow:hidden;box-shadow:var(--shadow);
}
.hero::after{
  content:"";position:absolute;inset:auto -60px -80px auto;width:260px;height:260px;
  background:radial-gradient(circle,rgba(201,162,39,.28),transparent 65%);
}
.hero h1{font-size:clamp(22px,4vw,32px);font-weight:800;margin-bottom:8px}
.hero h1 em{color:var(--gold);font-style:normal}
.hero p{color:#d7dcea;max-width:640px;line-height:1.8;font-size:15px}
.hero .gold-line{width:86px;height:4px;background:var(--gold);border-radius:99px;margin:14px 0}

.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px;margin-top:20px}
.stat{
  background:var(--paper);border-radius:var(--radius);padding:16px;text-align:center;
  box-shadow:var(--shadow);border-top:3px solid var(--gold);
}
.stat b{display:block;font-size:26px;color:var(--navy-1);font-weight:800}
.stat span{font-size:13px;color:var(--muted)}

.section-title{
  display:flex;align-items:center;gap:10px;margin:30px 0 14px;
  font-size:19px;font-weight:800;color:var(--navy-1);
}
.section-title::after{content:"";flex:1;height:1px;background:linear-gradient(90deg,var(--gold),transparent)}

.units{display:grid;gap:16px}
.unit-card{
  background:var(--paper);border-radius:18px;padding:20px 22px;
  box-shadow:var(--shadow);border-right:5px solid var(--gold);
}
.unit-card h3{color:var(--navy-1);font-size:17px;font-weight:800;margin-bottom:12px}
.lessons{display:flex;flex-wrap:wrap;gap:10px}
.lesson-chip{
  background:var(--cream);border:1px solid #e6ddc4;border-radius:11px;
  padding:10px 14px;cursor:pointer;font-family:inherit;font-size:14px;font-weight:700;
  color:var(--navy-2);transition:.18s;text-align:right;
}
.lesson-chip:hover{background:var(--navy-2);color:#fff;border-color:var(--navy-2)}
.lesson-chip small{display:block;font-weight:500;color:var(--muted);font-size:12px;margin-top:2px}
.lesson-chip:hover small{color:var(--gold-soft)}

.modes{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:14px;margin-top:8px}
.mode-card{
  background:var(--paper);border-radius:16px;padding:18px;cursor:pointer;
  box-shadow:var(--shadow);border:1px solid #eee3c8;text-align:right;transition:.18s;
  font-family:inherit;
}
.mode-card:hover{transform:translateY(-3px);border-color:var(--gold)}
.mode-card b{display:flex;align-items:center;gap:8px;color:var(--navy-1);font-size:16px}
.mode-card b .ico{font-size:20px}
.mode-card span{display:block;color:var(--muted);font-size:13px;margin-top:6px;line-height:1.6}

/* quiz */
.quiz-head{
  display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap;
  background:var(--navy-1);color:#fff;border-radius:14px;padding:12px 18px;margin-bottom:16px;
}
.quiz-head .qpos{font-weight:800;color:var(--gold-soft)}
.quiz-head .qmeta{font-size:13px;color:#cfd6e6}
.progress{height:8px;background:#e9e2cf;border-radius:99px;overflow:hidden;margin-bottom:18px}
.progress i{display:block;height:100%;background:linear-gradient(90deg,var(--gold),var(--gold-soft));border-radius:99px;transition:width .3s}

.qcard{
  background:var(--paper);border-radius:18px;padding:24px;box-shadow:var(--shadow);
}
.qnum{color:var(--gold);font-weight:800;font-size:14px;margin-bottom:8px}
.qtext{font-size:19px;font-weight:700;line-height:1.9;color:var(--navy-1);margin-bottom:18px}
.opts{display:grid;gap:10px}
.opt{
  display:flex;align-items:center;gap:12px;text-align:right;width:100%;
  background:var(--cream);border:2px solid #eee3c8;border-radius:12px;
  padding:13px 15px;font-family:inherit;font-size:16px;font-weight:600;color:var(--ink);
  cursor:pointer;transition:.15s;
}
.opt:hover:not(:disabled){border-color:var(--gold);background:#fff}
.opt .ol{
  min-width:34px;height:34px;border-radius:9px;background:var(--navy-2);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:15px;
}
.opt.correct{border-color:var(--ok);background:#e8f6ee}
.opt.correct .ol{background:var(--ok)}
.opt.wrong{border-color:var(--bad);background:#fdecec}
.opt.wrong .ol{background:var(--bad)}
.opt:disabled{cursor:default;opacity:.92}

.qactions{display:flex;justify-content:space-between;align-items:center;margin-top:18px;gap:10px;flex-wrap:wrap}
.btn{
  background:var(--navy-2);color:#fff;border:none;border-radius:11px;
  padding:12px 26px;font-family:inherit;font-size:15px;font-weight:800;cursor:pointer;transition:.2s;
}
.btn:hover{background:var(--navy-1)}
.btn.gold{background:var(--gold);color:var(--navy-1)}
.btn.gold:hover{background:var(--gold-soft)}
.btn.ghost{background:transparent;color:var(--navy-2);border:2px solid var(--navy-2)}
.btn.ghost:hover{background:var(--navy-2);color:#fff}
.btn:disabled{opacity:.45;cursor:default}

/* results */
.result-box{
  background:var(--paper);border-radius:20px;padding:30px;text-align:center;box-shadow:var(--shadow);
}
.score-ring{
  --p:0;width:150px;height:150px;border-radius:50%;margin:12px auto;
  background:conic-gradient(var(--gold) calc(var(--p)*1%),#e9e2cf 0);
  display:flex;align-items:center;justify-content:center;
}
.score-ring i{
  width:118px;height:118px;border-radius:50%;background:#fff;font-style:normal;
  display:flex;align-items:center;justify-content:center;flex-direction:column;
  font-weight:800;color:var(--navy-1);font-size:26px;
}
.score-ring i small{font-size:12px;color:var(--muted);font-weight:600}
.review-list{display:grid;gap:10px;margin-top:22px;text-align:right}
.review-item{background:var(--cream);border-radius:12px;padding:14px 16px;border-right:4px solid var(--bad)}
.review-item.ok{border-right-color:var(--ok)}
.review-item .rq{font-weight:700;color:var(--navy-1);margin-bottom:4px;font-size:15px}
.review-item .ra{font-size:13px;color:var(--muted)}
.review-item .ra b{color:var(--ok)}

.empty{
  background:var(--paper);border-radius:16px;padding:26px;text-align:center;color:var(--muted);
  box-shadow:var(--shadow);line-height:2;
}

.site-footer{
  background:var(--navy-1);color:#c6cde0;text-align:center;padding:20px;font-size:13.5px;line-height:2;
}
.footer-small{font-size:12px;color:#8b94ad}

@media(max-width:640px){
  main{padding:18px 12px 40px}
  .hero{padding:22px 18px}
  .qtext{font-size:17px}
  .brand-sub{display:none}
}