:root{--text:#6b6375;--text-h:#08060d;--bg:#fff;--border:#e5e4e7;--code-bg:#f4f3ec;--accent:#aa3bff;--accent-bg:#aa3bff1a;--accent-border:#aa3bff80;--social-bg:#f4f3ec80;--shadow:#0000001a 0 10px 15px -3px, #0000000d 0 4px 6px -2px;--sans:system-ui, "Segoe UI", Roboto, sans-serif;--heading:system-ui, "Segoe UI", Roboto, sans-serif;--mono:ui-monospace, Consolas, monospace;font:18px/145% var(--sans);letter-spacing:.18px;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark;color:var(--text);background:var(--bg);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}@media (prefers-color-scheme:dark){:root{--lightningcss-light: ;--lightningcss-dark:initial}}@media (width<=1024px){:root{font-size:16px}}@media (prefers-color-scheme:dark){:root{--text:#9ca3af;--text-h:#f3f4f6;--bg:#16171d;--border:#2e303a;--code-bg:#1f2028;--accent:#c084fc;--accent-bg:#c084fc26;--accent-border:#c084fc80;--social-bg:#2f303a80;--shadow:#0006 0 10px 15px -3px, #00000040 0 4px 6px -2px}#social .button-icon{filter:invert()brightness(2)}}#root{text-align:center;border-inline:1px solid var(--border);box-sizing:border-box;flex-direction:column;width:1126px;max-width:100%;min-height:100svh;margin:0 auto;display:flex}body{margin:0}h1,h2{font-family:var(--heading);color:var(--text-h);font-weight:500}h1{letter-spacing:-1.68px;margin:32px 0;font-size:56px}@media (width<=1024px){h1{margin:20px 0;font-size:36px}}h2{letter-spacing:-.24px;margin:0 0 8px;font-size:24px;line-height:118%}@media (width<=1024px){h2{font-size:20px}}p{margin:0}code,.counter{font-family:var(--mono);color:var(--text-h);border-radius:4px;display:inline-flex}code{background:var(--code-bg);padding:4px 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#ef44444d;border-radius:8px;margin-bottom:20px;padding:12px;font-size:14px}.submit-btn,.action-btn{color:#fff;background:var(--accent);cursor:pointer;border:none;border-radius:8px;width:100%;padding:14px;font-size:16px;font-weight:600;transition:background-color .2s}.submit-btn:hover,.action-btn:hover{background:var(--primary-hover)}.exam-container{width:100%}.exam-header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;margin-bottom:24px;display:flex}.student-badge{background:var(--code-bg);border:1px solid var(--border);border-radius:20px;align-items:center;gap:8px;padding:8px 16px;display:flex}.dot{border-radius:50%;width:8px;height:8px;display:inline-block}.dot.active{background-color:var(--success-color);box-shadow:0 0 8px var(--success-color)}.student-name{color:var(--text-h);font-weight:600}.student-roll{opacity:.8;font-size:13px}.timer-badge{background:var(--accent-bg);border:1px solid var(--accent-border);color:var(--accent);font-weight:700;font-family:var(--mono);border-radius:20px;align-items:center;gap:6px;padding:8px 16px;display:flex}.timer-badge.timer-warning{color:var(--danger-color);background:#ef444426;border-color:#ef444480;animation:1s infinite alternate pulse}@keyframes pulse{0%{transform:scale(1)}to{transform:scale(1.05)}}.timer-icon{width:18px;height:18px}.progress-bar-container{background:var(--border);border-radius:3px;width:100%;height:6px;margin-bottom:28px;overflow:hidden}.progress-bar-fill{background:linear-gradient(90deg, var(--accent) 0%, #3b82f6 100%);height:100%;transition:width .3s}.question-card{background:var(--code-bg);border:1px solid var(--border);border-radius:12px;margin-bottom:28px;padding:24px}.question-meta{text-transform:uppercase;letter-spacing:.5px;justify-content:space-between;margin-bottom:16px;font-size:13px;font-weight:600;display:flex}.status-saving{color:var(--accent)}.status-saved{color:var(--success-color)}.status-pending{color:var(--text);opacity:.7}.question-text{color:var(--text-h);margin-top:0;margin-bottom:24px;font-size:20px;font-weight:600;line-height:1.4}.options-list{flex-direction:column;gap:12px;display:flex}.option-btn{text-align:left;background:var(--bg);border:1px solid var(--border);cursor:pointer;color:var(--text-h);border-radius:8px;align-items:center;padding:16px 20px;font-size:16px;transition:all .2s;display:flex}.option-btn:hover{border-color:var(--accent);background:var(--accent-bg)}.option-btn.selected{border-color:var(--accent);background:var(--accent-bg);box-shadow:0 0 0 2px var(--accent)}.option-key{background:var(--border);width:28px;height:28px;color:var(--text);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;margin-right:16px;font-size:14px;font-weight:700;display:flex}.option-btn.selected .option-key{background:var(--accent);color:#fff}.option-text{flex-grow:1;font-weight:500}.exam-footer{justify-content:space-between;align-items:center;gap:16px;display:flex}.nav-btn{border:1px solid var(--border);background:var(--bg);color:var(--text-h);cursor:pointer;border-radius:8px;padding:12px 24px;font-size:15px;font-weight:600;transition:all .2s}.nav-btn:hover:not(:disabled){border-color:var(--accent);color:var(--accent)}.nav-btn:disabled{opacity:.5;cursor:not-allowed}.progress-summary{opacity:.8;font-size:14px;font-weight:600}.submit-btn{background:var(--success-color);color:#fff;cursor:pointer;border:none;border-radius:8px;width:auto;padding:12px 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