:root{--bg:#0b1220;
    --card:#081226;
    --accent:#1e90ff;
    --muted:#9aa6b2;
    --glass:rgba(255,255,255,0.03)}
*{box-sizing:border-box}
body{margin:0;
    font-family:Inter,system-ui,Segoe UI,Roboto,Arial;
    background:linear-gradient(180deg,#041022,#071a2b);
    /* background-image: url(Bac.jpg); */
    background-image: url(456.jpg);
    background-size: cover;
    color:#e8f1f8;
    min-height:100vh;
    display:flex;
    align-items:center;
    justify-content:center;
    padding:20px}
.container{width:100%;max-width:1100px}
.card{background:linear-gradient(180deg,rgba(24, 41, 87, 0.267),rgb(10, 25, 54));border-radius:12px;padding:20px;box-shadow:0 6px 30px rgba(2,6,23,0.6)}/* header */
header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.brand{display:flex;align-items:center;gap:12px}
.logo{width:56px;height:56px;border-radius:8px;background:linear-gradient(135deg,var(--accent),#2bb6ff);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:18px;color:#031428}
h1{margin:0;font-size:20px}
.top-info{color:var(--muted);font-size:13px}

/* layout sections separated */
#setupSection, #quizSection{margin-top:12px}
#quizSection{display:none}

/* setup form */
.grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.field{display:flex;flex-direction:column}
label{font-size:13px;color:var(--muted);margin-bottom:6px}
input,select{padding:10px;border-radius:8px;border:1px solid rgba(255,255,255,0.06);background:transparent;color:inherit}
.actions{display:flex;gap:8px;align-items:center}
button{padding:10px 14px;border-radius:8px;border:0;background:var(--accent);color:#021422;font-weight:600;cursor:pointer}
button.ghost{background:transparent;border:1px solid rgba(255,255,255,0.06);color:var(--muted)}

/* quiz header */
.quiz-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.user-badge{display:flex;align-items:center;gap:10px}
.avatar{width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,#fff2,#fff1);display:flex;align-items:center;justify-content:center;color:#021428;font-weight:700}
.small{font-size:13px;color:var(--muted)}

/* question card */
.q-card{padding:18px;border-radius:10px;background:linear-gradient(180deg,rgba(255,255,255,0.02),rgba(255,255,255,0.01));}
.q-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}
.progress{height:8px;background:rgba(255,255,255,0.04);border-radius:8px;overflow:hidden}
.progress > i{display:block;height:100%;background:linear-gradient(90deg,var(--accent),#61b6ff);width:0%}
.q-text{font-size:18px;margin-bottom:12px}

.options{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.opt{padding:12px;border-radius:8px;border:1px solid rgba(255,255,255,0.04);cursor:pointer;user-select:none;transition:all .18s;display:flex;gap:12px;align-items:center}
.opt:hover{transform:translateY(-3px)}
.opt .pill{width:36px;height:36px;border-radius:8px;display:flex;align-items:center;justify-content:center;font-weight:700;background:rgba(255,255,255,0.02)}

.opt.disabled{pointer-events:none;opacity:0.8}
.opt.correct{border-color:rgba(30,144,255,0.9);box-shadow:0 6px 18px rgba(30,144,255,0.08);}
.opt.wrong{border-color:rgba(255,60,60,0.9);box-shadow:0 6px 18px rgba(255,60,60,0.06)}

.navs{display:flex;justify-content:space-between;align-items:center;margin-top:12px}
.meta{color:var(--muted);font-size:14px}

/* results */
#resultView{display:none;padding:12px;margin-top:12px;border-radius:8px;background:linear-gradient(180deg,rgba(255,255,255,0.02),transparent)}
.result-stats{display:flex;gap:12px;flex-wrap:wrap}
.stat{padding:10px;border-radius:8px;background:var(--glass);min-width:160px}

/* certificate canvas preview */
.cert-preview{margin-top:10px;display:flex;gap:12px;align-items:center}

.footer1{margin-top:12px;color:var(--muted);font-size:13px;text-align:center}
footer{margin-top:12px;color:var(--muted);font-size:13px;text-align:center} 
/* Inline certificate styles (keeps print clean) */
    

/* responsive */
@media(max-width:800px){.grid{grid-template-columns:1fr}.options{grid-template-columns:1fr}.container{padding:8px}}