:root{--bg:#f6f7f9;--card:#fff;--text:#172033;--muted:#687386;--line:#e3e7ee;--primary:#235fdb;--primarySoft:#eef4ff;--danger:#b42318;--success:#087443;--shadow:0 10px 35px rgba(15,23,42,.06)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:"Vazirmatn","Vazir","Noto Sans Arabic",Tahoma,Arial,sans-serif;font-size:16px;line-height:1.9;-webkit-font-smoothing:antialiased}button,input,select,textarea{font:inherit}button{touch-action:manipulation}.app{max-width:900px;margin:auto;padding:30px 20px 60px}.screen{display:none}.screen.active{display:block}.card{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:30px;box-shadow:var(--shadow)}.narrow{max-width:680px;margin:60px auto 0}.eyebrow{font-size:13px;font-weight:800;color:var(--primary);margin-bottom:7px}h1,h2,p{margin-top:0}h1{font-size:30px;line-height:1.45;margin-bottom:10px}h2{font-size:24px;line-height:1.5;margin-bottom:9px}.lead{font-size:17px;color:var(--muted);max-width:760px}.muted,.hint,.counter{color:var(--muted)}.hint,.counter{font-size:13px}.facts{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:22px 0}.facts div{border:1px solid var(--line);background:#fafbfd;border-radius:14px;padding:13px;text-align:center}.facts strong{display:block;font-size:20px}.facts span{color:var(--muted);font-size:13px}.notice,.scenario,.example{border:1px solid #dbe3ef;background:#f8fbff;border-radius:14px;padding:15px 17px;margin:18px 0}.notice ul{margin:8px 0 0;padding-right:22px}.notice.compact div{margin-top:5px}.field{margin:20px 0}.field label,.field-label{display:block;font-weight:750;margin-bottom:7px}input,select,textarea{width:100%;border:1px solid #d4d9e2;border-radius:12px;background:#fff;color:var(--text);padding:12px 14px;min-height:50px;outline:none}textarea{min-height:150px;resize:vertical;line-height:1.9}textarea.large{min-height:210px}input:focus,select:focus,textarea:focus{border-color:var(--primary);box-shadow:0 0 0 4px rgba(35,95,219,.10)}.checks{display:grid;grid-template-columns:repeat(2,1fr);gap:9px}.checks label{display:flex;align-items:flex-start;gap:9px;border:1px solid var(--line);border-radius:12px;padding:10px 12px;background:#fbfcfe;cursor:pointer}.checks input{width:auto;min-height:auto;margin-top:7px;accent-color:var(--primary)}.btn{border:0;border-radius:11px;padding:12px 19px;min-height:48px;font-weight:800;cursor:pointer}.btn.primary{background:var(--primary);color:#fff}.btn.secondary{background:#eef1f5;color:#263248}.btn:disabled{opacity:.45;cursor:not-allowed}.small-btn{min-height:38px;padding:7px 12px;font-size:13px}.error{display:none;margin-top:8px;color:var(--danger);font-size:14px}.error.show{display:block}.rava{border:1px solid var(--line);border-radius:14px;overflow:hidden}.rava>div{display:grid;grid-template-columns:260px 1fr;gap:18px;padding:11px 14px;border-bottom:1px solid var(--line);align-items:center}.rava>div:last-child{border-bottom:0}.rava code,.ltr{direction:ltr;unicode-bidi:isolate}.rava code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;color:#1d4ed8;font-weight:800;text-align:left}.learning-clock{text-align:center;margin-top:22px;font-size:17px}.center{text-align:center}.topbar{position:sticky;top:0;z-index:5;margin:-30px -20px 20px;padding:11px 20px;border-bottom:1px solid rgba(227,231,238,.95);background:rgba(246,247,249,.95);backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:space-between;gap:18px}.progress-wrap{flex:1}.meta{display:flex;justify-content:space-between;gap:10px;color:var(--muted);font-size:13px;margin-bottom:6px}.progress{height:8px;background:#e4e8ef;border-radius:999px;overflow:hidden}.progress span{display:block;height:100%;width:0;background:var(--primary);transition:width .2s}.timer{direction:ltr;min-width:86px;text-align:center;background:#fff;border:1px solid var(--line);border-radius:11px;padding:6px 10px;font-weight:850;font-variant-numeric:tabular-nums}.question-text{font-size:21px;font-weight:800;line-height:1.75;margin-bottom:20px}.options{display:grid;gap:10px}.option{display:flex;align-items:flex-start;gap:11px;border:1px solid #dfe3ea;border-radius:13px;padding:13px 14px;cursor:pointer;background:#fff}.option.selected{border-color:#7da6f3;background:var(--primarySoft)}.option input{width:auto;min-height:auto;margin-top:7px;accent-color:var(--primary)}.question-actions{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-top:22px;padding-top:18px;border-top:1px solid var(--line)}.scenario strong{display:block;margin-top:10px}.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin:18px 0}.steps span{border:1px solid var(--line);border-radius:11px;background:#fafbfd;padding:9px;text-align:center;font-size:13px}.row{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:7px}.center-card{text-align:center}.thank .checkmark{width:68px;height:68px;margin:0 auto 20px;border-radius:50%;display:grid;place-items:center;background:#ecfdf3;color:var(--success);font-size:34px;font-weight:900}#exitBtn{display:none!important}.toast{position:fixed;left:20px;bottom:20px;background:#172033;color:#fff;padding:10px 14px;border-radius:10px;font-size:13px;z-index:20}
@media(max-width:680px){.app{padding:18px 12px 40px}.card{padding:21px;border-radius:16px}h1{font-size:25px}h2{font-size:22px}.facts{grid-template-columns:1fr}.checks{grid-template-columns:1fr}.rava>div{grid-template-columns:1fr;gap:3px}.rava code{text-align:left}.steps{grid-template-columns:1fr 1fr}.topbar{margin:-18px -12px 16px;padding:10px 12px}.question-actions{align-items:stretch;flex-direction:column}.question-actions .btn{width:100%}.question-text{font-size:19px}}