:root{font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;color:#fff;background:#080d18;font-synthesis:none;text-rendering:optimizeLegibility;--bg: #080d18;--panel: #111a2b;--panel-2: #172238;--border: #2b3a52;--text: #ffffff;--muted: #d0d9e8;--accent: #5dd6e8;--accent-strong: #20b7d0;--success: #70dfb0;--danger: #ff8d9a}*{box-sizing:border-box}html,body,#root{min-height:100%;margin:0}body{min-width:320px;background:var(--bg);color:var(--text)}button,input{font:inherit}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid var(--accent);outline-offset:3px}button:disabled{cursor:not-allowed;opacity:.65}.auth-layout{min-height:100vh;display:grid;grid-template-columns:minmax(0,1.1fr) minmax(360px,.9fr)}.auth-story{padding:clamp(32px,7vw,104px);display:flex;flex-direction:column;justify-content:center;background:radial-gradient(ellipse at 15% 15%,#15344b 0,transparent 45%),#0b1424;border-right:1px solid var(--border)}.brand-lockup{display:inline-flex;align-items:center;gap:13px;color:var(--text);text-decoration:none;width:fit-content}.brand-lockup b{display:block;font-size:17px;letter-spacing:.02em}.brand-lockup small{display:block;margin-top:3px;color:var(--muted);font-size:9px;letter-spacing:.13em}.brand-mark{width:48px;height:48px;display:grid;place-items:center;border-radius:15px;background:linear-gradient(145deg,#5dd6e8,#217f9c);color:#07121e;font-size:25px;font-weight:800}.small-mark{width:40px;height:40px;border-radius:12px;font-size:20px}.auth-story>.eyebrow{margin-top:78px}.eyebrow{color:var(--accent);font-size:10px;font-weight:700;letter-spacing:.17em}.auth-story h1,.hero h1{margin:12px 0 18px;font-size:clamp(34px,4vw,56px);line-height:1.22;letter-spacing:-.04em}.auth-story h1 span,.hero h1 span{color:var(--accent)}.story-copy{max-width:520px;color:var(--muted);line-height:1.8}.story-points{display:grid;gap:15px;margin-top:42px;color:#fff}.story-points span{display:flex;align-items:center;gap:16px}.story-points b{color:var(--accent);font-size:12px;letter-spacing:.1em}.auth-panel{align-self:center;width:min(100% - 48px,460px);margin:56px auto;padding:38px;border:1px solid var(--border);border-radius:22px;background:var(--panel);box-shadow:0 24px 80px #0006}.auth-panel h2{margin:8px 0;font-size:27px}.muted{color:var(--muted);line-height:1.7}.small{font-size:12px}.form-stack{display:grid;gap:17px;margin-top:28px}.form-stack label{display:grid;gap:8px;color:#fff;font-size:13px;font-weight:600}.form-stack input{width:100%;min-height:48px;padding:12px 14px;border:1px solid #40516b;border-radius:10px;color:#fff;background:#0a1220}.form-stack input::placeholder{color:#b7c4d6}.button{min-height:46px;display:inline-flex;align-items:center;justify-content:center;gap:12px;padding:11px 18px;border:1px solid var(--border);border-radius:10px;color:#fff;font-weight:700;cursor:pointer;text-decoration:none}.button:hover{text-decoration:none;filter:brightness(1.08)}.button.primary{color:#06131d;background:var(--accent);border-color:var(--accent)}.button.secondary{background:#1c2a40;border-color:#52637c}.full{width:100%}.form-message{margin:18px 0 0;color:#fff;line-height:1.6}.auth-switch{margin:24px 0;padding-top:20px;border-top:1px solid var(--border);color:var(--muted);font-size:13px}.auth-switch a{margin-left:5px;font-weight:700}.alert{margin:18px 0;padding:13px 15px;border:1px solid #8e5360;border-radius:10px;color:#fff;background:#3a202b;line-height:1.6}.app-shell{min-height:100vh;display:flex;flex-direction:column}.topbar{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:14px max(24px,calc((100vw - 1180px)/2));border-bottom:1px solid var(--border);background:#0b1322}.top-links{display:flex;align-items:center;gap:24px}.top-links a{color:#fff;font-size:13px;font-weight:600}.dashboard{width:min(1180px,calc(100% - 48px));margin:0 auto;flex:1}.hero{min-height:280px;margin-top:34px;padding:40px 48px;display:flex;align-items:center;justify-content:space-between;gap:28px;overflow:hidden;border:1px solid #28435b;border-radius:22px;background:radial-gradient(circle at 82% 50%,#14435a 0,transparent 30%),linear-gradient(120deg,#122239,#0c1728)}.hero h1{font-size:clamp(30px,4vw,46px)}.hero p:not(.eyebrow){color:var(--muted)}.hero-mark{width:160px;height:160px;flex:0 0 160px;display:grid;place-items:center;border:1px solid #4f9db0;border-radius:50%;box-shadow:0 0 0 18px #4dd1e512,0 0 0 38px #4dd1e509;color:var(--accent);font-size:27px;font-weight:800}.metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:22px 0 42px}.metric{display:flex;align-items:center;gap:17px;min-height:88px;padding:18px 20px;border:1px solid var(--border);border-radius:14px;background:var(--panel)}.metric>span{color:var(--accent);font-size:12px;font-weight:800}.metric b{display:block;font-size:20px}.metric small{display:block;margin-top:4px;color:var(--muted)}.section-block{margin:36px 0}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:18px}.section-heading h2{margin:5px 0;font-size:25px}.section-heading p{margin:4px 0}.role-chip,.status{display:inline-flex;align-items:center;padding:6px 10px;border:1px solid #347e8d;border-radius:999px;color:#fff;background:#123b49;font-size:11px;font-weight:700}.admin-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.admin-card{min-height:112px;display:flex;flex-direction:column;justify-content:center;gap:8px;padding:20px;border:1px solid var(--border);border-radius:14px;color:#fff;background:var(--panel)}.admin-card:hover{border-color:var(--accent);text-decoration:none}.admin-card span{color:var(--muted);font-size:12px;line-height:1.5}.admin-card.featured{border-color:#2f8ca0;background:#102b3c}.version-list{margin-top:22px;padding:20px;border:1px solid var(--border);border-radius:14px;background:var(--panel)}.version-list h3{margin-top:0}.version-row{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:14px 0;border-top:1px solid var(--border)}.version-row small{display:block;margin-top:5px;color:var(--muted)}.status.published{color:#fff;background:#164b3a;border-color:#3b9b75}.status.draft{color:#fff;background:#49391b;border-color:#a17b36}.exam-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.exam-card{display:flex;flex-direction:column;min-height:250px;padding:22px;border:1px solid var(--border);border-radius:16px;background:var(--panel)}.card-top{display:flex;justify-content:space-between;align-items:center;gap:12px}.card-top .eyebrow{margin:0;font-size:9px}.exam-card h3{margin:22px 0 8px;font-size:19px}.exam-card .muted{min-height:48px;margin:0 0 18px;font-size:13px}.exam-meta{display:flex;flex-wrap:wrap;gap:12px;margin:auto 0 18px;color:#fff;font-size:11px}.empty-state,.loading-line{padding:30px;border:1px dashed #52637c;border-radius:14px;color:#fff;background:#101a2b}.empty-state p{color:var(--muted)}.loading-line{display:flex;align-items:center;gap:14px}.migration-note{margin:46px 0 26px;padding:20px 22px;border-left:3px solid var(--accent);background:#101b2c;color:#fff}.migration-note p{color:var(--muted);line-height:1.7}.footer{display:flex;justify-content:space-between;gap:20px;padding:24px max(24px,calc((100vw - 1180px)/2));border-top:1px solid var(--border);color:var(--muted);font-size:10px;letter-spacing:.12em}.footer span{letter-spacing:0}.narrow-page{width:min(720px,calc(100% - 40px));margin:54px auto;flex:1}.narrow-page h1{margin-top:8px}.account-card{margin-top:22px;padding:30px;border:1px solid var(--border);border-radius:18px;background:var(--panel)}.account-avatar{width:58px;height:58px;display:grid;place-items:center;border-radius:50%;color:#07121e;background:var(--accent);font-size:24px;font-weight:800}.account-card h2{margin-bottom:0}.profile-details{margin:26px 0}.profile-details div{display:flex;justify-content:space-between;gap:20px;padding:13px 0;border-bottom:1px solid var(--border)}.profile-details dt{color:var(--muted)}.profile-details dd{margin:0;text-align:right;font-weight:600}.center-state{min-height:100vh;display:grid;place-content:center;justify-items:center;gap:14px;padding:24px;text-align:center}.center-state .notice-card{max-width:520px;padding:28px;border:1px solid var(--border);border-radius:16px;background:var(--panel)}.spinner{width:22px;height:22px;border:3px solid #496078;border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}@media(max-width:900px){.auth-layout{grid-template-columns:1fr}.auth-story{padding:32px 28px}.auth-story>.eyebrow{margin-top:40px}.story-points{grid-template-columns:repeat(3,1fr);gap:10px;font-size:12px}.story-points span{align-items:flex-start;flex-direction:column;gap:6px}.auth-panel{margin:24px auto 40px}.exam-grid,.admin-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:620px){.auth-story{padding:26px 22px}.auth-story h1{font-size:34px}.auth-panel{width:calc(100% - 28px);padding:24px}.topbar{align-items:flex-start;flex-direction:column;padding:16px 20px}.top-links{width:100%;justify-content:space-between;gap:10px}.dashboard{width:calc(100% - 28px)}.hero{min-height:0;padding:28px 22px}.hero-mark{display:none}.hero h1{font-size:31px}.metrics{grid-template-columns:1fr;gap:10px;margin-bottom:32px}.exam-grid,.admin-grid{grid-template-columns:1fr}.version-row,.profile-details div{align-items:flex-start;flex-direction:column}.profile-details dd{text-align:left}.footer{flex-direction:column;padding:22px}}.history-list{display:grid;gap:14px;margin-top:22px}.history-card{min-height:0}.history-card h2{margin:18px 0 7px;font-size:19px}.user-row{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:16px 0;border-top:1px solid var(--border)}.user-row small{display:block;margin-top:5px;color:var(--muted)}.user-actions{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:8px}.user-actions .button{min-height:38px;padding:8px 12px;font-size:12px}.attempt-result{display:flex;flex-direction:column;align-items:flex-end;gap:8px;white-space:nowrap}@media(max-width:620px){.user-row{align-items:flex-start;flex-direction:column}.user-actions{justify-content:flex-start}.attempt-result{align-items:flex-start}}.result-summary{display:grid;grid-template-columns:repeat(6,1fr);gap:10px;margin:24px 0 34px}.result-summary>div{min-height:82px;display:flex;flex-direction:column;justify-content:center;gap:5px;padding:12px;border:1px solid var(--border);border-radius:12px;background:var(--panel)}.result-summary b{font-size:20px}.result-summary span{color:var(--muted);font-size:11px}.result-score{border-color:#347e8d!important;background:#102b3c!important}.result-exam-title{margin:30px 0 16px}.result-question{margin:14px 0;padding:20px;border:1px solid var(--border);border-left-width:4px;border-radius:14px;background:var(--panel)}.result-question.correct{border-left-color:#3b9b75}.result-question.partial{border-left-color:#c99a40}.result-question.incorrect{border-left-color:#b85a69}.result-question-head{display:flex;align-items:center;justify-content:space-between;gap:14px;color:var(--muted);font-size:12px}.result-question-head b{color:#fff;font-size:14px}.math-content{color:#fff;line-height:1.8;overflow-wrap:anywhere}.question-content{margin:18px 0;font-size:15px}.question-options{display:grid;gap:8px;margin:12px 0 18px;padding-left:28px;color:#fff}.question-options li{padding-left:4px}.answer-box,.explanation{margin-top:12px;padding:12px 14px;border:1px solid var(--border);border-radius:9px;background:#0b1423}.answer-box>b,.explanation>b{display:block;margin-bottom:5px;color:var(--muted);font-size:11px}.correct-answer{border-color:#347e8d}.explanation{background:#142238}@media(max-width:900px){.result-summary{grid-template-columns:repeat(3,1fr)}}@media(max-width:620px){.result-summary{grid-template-columns:repeat(2,1fr)}.result-question{padding:15px}.result-question-head{align-items:flex-start;flex-direction:column}}