@import "https://fonts.googleapis.com/css2?family=Outfit:wght@400;600;700;800&display=swap";*,:before,:after{box-sizing:border-box;margin:0;padding:0}:root{--bg:#0d0f1a;--surface:#161829;--card:#1e2138;--border:#2b2f52;--accent:#7c6af7;--accent2:#a78bfa;--green:#22c55e;--red:#ef4444;--text:#e8eaf6;--muted:#9194b3;--radius:14px;--radius-lg:22px;--shadow:0 8px 32px #00000080}body{background:var(--bg);color:var(--text);justify-content:center;align-items:center;min-height:100svh;font-family:Outfit,system-ui,sans-serif;display:flex}.screen{flex-direction:column;gap:1.25rem;width:100%;max-width:680px;min-height:100svh;margin-inline:auto;padding:2rem 1.25rem;display:flex}.screen.center{text-align:center;justify-content:center;align-items:center;gap:1.5rem}.logo{filter:drop-shadow(0 0 24px var(--accent));font-size:4rem;line-height:1}.title{background:linear-gradient(135deg, #fff 30%, var(--accent2));-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;font-size:clamp(1.8rem,5vw,2.6rem);font-weight:800}.subtitle{color:var(--muted);max-width:420px;font-size:1.05rem;line-height:1.6}.subtitle strong{color:var(--accent2)}.hint{color:var(--muted);margin-top:.5rem}.pct-label{color:var(--accent2);font-size:1.2rem;font-weight:700}.btn{border-radius:var(--radius);cursor:pointer;border:none;justify-content:center;align-items:center;gap:.5rem;padding:.65rem 1.5rem;font-family:inherit;font-size:1rem;font-weight:600;transition:transform .15s,box-shadow .15s,opacity .15s;display:inline-flex}.btn:active{transform:scale(.97)}.btn-primary{background:linear-gradient(135deg, var(--accent), var(--accent2));color:#fff;box-shadow:0 4px 20px #7c6af766}.btn-primary:hover{transform:translateY(-1px);box-shadow:0 6px 28px #7c6af799}.btn-lg{border-radius:var(--radius-lg);padding:.85rem 2.5rem;font-size:1.15rem}.quiz-header{background:var(--surface);border-radius:var(--radius-lg);border:1px solid var(--border);box-shadow:var(--shadow);align-items:center;gap:1rem;padding:.75rem 1rem;display:flex}.counter{color:var(--accent2);white-space:nowrap;min-width:52px;font-weight:700}.progress-bar{background:var(--border);border-radius:99px;flex:1;height:8px;overflow:hidden}.progress-fill{background:linear-gradient(90deg, var(--accent), var(--accent2));border-radius:99px;height:100%;transition:width .4s}.score-chip{color:#facc15;white-space:nowrap;font-weight:700}.quiz-main{flex-direction:column;flex:1;gap:1rem;display:flex}.question-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow);padding:1.75rem 1.5rem}.question-text{font-size:1.2rem;font-weight:600;line-height:1.65}.options-list{flex-direction:column;gap:.75rem;list-style:none;display:flex}.option-btn{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);width:100%;color:var(--text);cursor:pointer;text-align:left;align-items:center;gap:1rem;padding:.9rem 1.25rem;font-family:inherit;font-size:.98rem;font-weight:500;transition:background .15s,border-color .15s,transform .12s;display:flex}.option-btn:not(:disabled):hover{border-color:var(--accent);background:#232648;transform:translate(4px)}.option-btn:disabled{cursor:default}.opt-letter{background:var(--border);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:2rem;height:2rem;font-size:.85rem;font-weight:700;transition:background .15s;display:inline-flex}.option-btn.correct{border-color:var(--green);background:#22c55e26}.option-btn.correct .opt-letter{background:var(--green);color:#fff}.option-btn.wrong{border-color:var(--red);background:#ef44441f}.option-btn.wrong .opt-letter{background:var(--red);color:#fff}.feedback{border-radius:var(--radius);flex-direction:column;gap:.75rem;padding:1.1rem 1.25rem;animation:.25s fadeUp;display:flex}@keyframes fadeUp{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.feedback-ok{border:1px solid var(--green);background:#22c55e1f}.feedback-err{border:1px solid var(--red);background:#ef44441a}.feedback-text{font-size:.98rem;line-height:1.5}.feedback-text strong{color:var(--accent2)}.score-bar-wrap{background:var(--border);border-radius:99px;width:100%;max-width:340px;height:14px;overflow:hidden}.score-bar{background:linear-gradient(90deg, var(--accent), #22c55e);border-radius:99px;height:100%;transition:width 1s}.error-icon{font-size:3rem}.error-msg{color:var(--red);font-size:1rem}.spinner{border:4px solid var(--border);border-top-color:var(--accent);border-radius:50%;width:48px;height:48px;animation:.7s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}code{color:var(--accent2);white-space:nowrap;background:#7c6af726;border:1px solid #7c6af740;border-radius:5px;padding:.1em .38em;font-family:Fira Code,Cascadia Code,Consolas,monospace;font-size:.88em}pre{border:1px solid var(--border);border-left:3px solid var(--accent);border-radius:var(--radius);background:#0a0c17;margin:.75rem 0 .25rem;padding:1rem 1.1rem;font-size:.82rem;line-height:1.65;overflow-x:auto;box-shadow:inset 0 0 20px #0006}pre code{color:#c9d1f5;font-size:inherit;white-space:pre;background:0 0;border:none;border-radius:0;padding:0}.opt-text{flex-direction:column;align-self:flex-start;line-height:1.5;display:flex}pre::-webkit-scrollbar{height:5px}pre::-webkit-scrollbar-track{background:#0a0c17}pre::-webkit-scrollbar-thumb{background:var(--border);border-radius:99px}pre::-webkit-scrollbar-thumb:hover{background:var(--accent)}@media (width<=480px){.btn-lg{padding:.75rem 1.75rem;font-size:1rem}.question-text{font-size:1.05rem}pre{padding:.75rem .85rem;font-size:.76rem}}