:root{--bg:#f4f7fb;--surface:#fff;--surface-muted:#eef5fb;--ink:#10243d;--muted:#66768b;--line:#d8e3ee;--blue:#1769c2;--blue-dark:#0f4c91;--blue-deep:#0a315f;--blue-soft:#e5f1ff;--blue-glass:#ffffff24;--gold:#c9953b;--green:#0f7a4f;--green-soft:#dff6eb;--red:#b42318;--red-soft:#fde7e4;--gray-soft:#eef2f6;--radius:8px;--shadow:0 18px 55px #10243d1f;--shadow-soft:0 12px 28px #10243d14;--ease:cubic-bezier(.22, 1, .36, 1)}*{box-sizing:border-box}html,body{min-height:100%;color:var(--ink);background:radial-gradient(circle at top left, #1769c21a, transparent 34rem), linear-gradient(180deg, #fbfdff 0%, var(--bg) 46%, #eef4fa 100%);text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}a{color:inherit;text-decoration:none}button,input,textarea,select{font:inherit}::selection{color:#fff;background:var(--blue)}@keyframes fade-up{0%{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}@keyframes panel-in{0%{opacity:0;transform:translateY(18px)scale(.985)}to{opacity:1;transform:translateY(0)scale(1)}}@keyframes soft-shine{0%{transform:translate(-120%)skew(-14deg)}to{transform:translate(220%)skew(-14deg)}}.auth-page{background-color:#0000;background-image:linear-gradient(120deg,#09315df0,#1769c2c7),url(https://images.unsplash.com/photo-1560518883-ce09059eeffa?auto=format&fit=crop&w=1800&q=80);background-position:50%;background-repeat:repeat,repeat;background-size:cover;background-attachment:scroll,scroll;background-origin:padding-box,padding-box;background-clip:border-box,border-box;grid-template-columns:minmax(320px,.9fr) minmax(380px,1fr);min-height:100vh;display:grid;overflow:hidden}.auth-intro{color:#fff;min-height:100vh;animation:fade-up .68s var(--ease) both;flex-direction:column;justify-content:space-between;padding:clamp(32px,7vw,84px);display:flex;position:relative}.auth-intro:after{content:"";aspect-ratio:1;pointer-events:none;background:radial-gradient(circle,#ffffff24,#0000 64%);border:1px solid #ffffff38;border-radius:50%;width:min(280px,35vw);position:absolute;inset:auto 12% 8% auto}.auth-intro>*{z-index:1;position:relative}.brand{letter-spacing:0;align-items:center;gap:10px;font-size:1rem;font-weight:800;display:inline-flex}.brand:before{content:"";background:linear-gradient(135deg, #fff, #a9d2ff 58%, var(--gold));border-radius:4px;width:12px;height:12px;box-shadow:0 0 0 5px #ffffff1f}.auth-intro h1{letter-spacing:0;text-wrap:balance;max-width:640px;margin:0;font-size:clamp(2.45rem,5vw,5rem);line-height:.96}.auth-intro p{color:#ffffffe0;max-width:560px;font-size:clamp(1rem,1.2vw,1.15rem);line-height:1.6}.auth-panel{width:min(640px,100% - 56px);box-shadow:var(--shadow);border-radius:var(--radius);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);animation:panel-in .56s var(--ease) .1s both;background:#ffffffeb;border:1px solid #ffffffb8;align-self:center;margin:28px auto;padding:clamp(26px,4vw,46px)}.auth-panel h2{letter-spacing:0;margin:0 0 8px;font-size:clamp(1.5rem,2.2vw,2rem);line-height:1.12}.tabs{background:var(--surface-muted);border-radius:var(--radius);border:1px solid #1769c214;grid-template-columns:repeat(2,1fr);gap:6px;margin-bottom:24px;padding:4px;display:grid}.tab{color:var(--muted);cursor:pointer;transition:color .18s var(--ease), background .18s var(--ease), transform .18s var(--ease), box-shadow .18s var(--ease);background:0 0;border:0;border-radius:6px;justify-content:center;align-items:center;padding:10px 14px;font-weight:700;display:inline-flex}.tab:hover{color:var(--blue-dark);transform:translateY(-1px)}.tab[data-active=true]{color:var(--blue-dark);background:#fff;box-shadow:0 7px 18px #10243d14}.form-stack{gap:14px;display:grid}.field{color:var(--muted);gap:7px;font-size:.88rem;font-weight:700;display:grid}.input,.textarea,.select{border:1px solid var(--line);border-radius:var(--radius);width:100%;color:var(--ink);transition:border-color .18s var(--ease), box-shadow .18s var(--ease), transform .18s var(--ease), background .18s var(--ease);background:#ffffffe6;outline:none;padding:13px 14px}.textarea{resize:vertical;min-height:120px}.input:focus,.textarea:focus,.select:focus{border-color:var(--blue);background:#fff;transform:translateY(-1px);box-shadow:0 0 0 4px #1769c221,0 12px 24px #10243d12}.checkbox-row{color:var(--muted);grid-template-columns:18px 1fr;align-items:start;gap:10px;font-size:.9rem;line-height:1.45;display:grid}.checkbox-row input{accent-color:var(--blue);margin-top:2px}.button{border-radius:var(--radius);background:linear-gradient(135deg, var(--blue), var(--blue-dark));color:#fff;cursor:pointer;min-height:44px;transition:transform .18s var(--ease), box-shadow .18s var(--ease), background .18s var(--ease), opacity .18s var(--ease);border:0;justify-content:center;align-items:center;gap:8px;padding:11px 18px;font-weight:800;display:inline-flex;position:relative;overflow:hidden;box-shadow:0 12px 24px #1769c238}.button svg,.nav-link svg,.nav-button svg,.status-pill svg{flex:none}.button:after{content:"";background:linear-gradient(90deg,#0000,#ffffff57,#0000);width:36%;position:absolute;inset:0 auto 0 -45%;transform:translate(-120%)skew(-14deg)}.button:hover:after{animation:soft-shine .76s var(--ease)}.button:hover{transform:translateY(-2px);box-shadow:0 16px 30px #1769c247}.button:active{transform:translateY(0);box-shadow:0 8px 18px #1769c22e}.button:disabled{cursor:not-allowed;opacity:.58;box-shadow:none;transform:none}.button.secondary{color:var(--blue-dark);background:linear-gradient(135deg, #eef6ff, var(--blue-soft));box-shadow:0 10px 22px #10243d12}.button.ghost{color:var(--ink);box-shadow:none;background:0 0}.button.danger{background:var(--red)}.notice{border:1px solid var(--line);border-radius:var(--radius);color:var(--muted);background:linear-gradient(135deg,#eef5fbf0,#ffffffdb);padding:13px 15px;line-height:1.45}.app-shell{grid-template-columns:260px 1fr;min-height:100vh;display:grid}.sidebar{color:#fff;background:linear-gradient(#ffffff14,#0000 28%),linear-gradient(160deg,#0d315d 0%,#123f74 52%,#0a2547 100%);height:100vh;padding:26px 18px;position:sticky;top:0;box-shadow:inset -1px 0 #ffffff14}.sidebar nav{gap:7px;margin-top:30px;display:grid}.nav-link,.nav-button{border-radius:var(--radius);color:#ffffffe6;cursor:pointer;text-align:left;width:100%;transition:background .18s var(--ease), color .18s var(--ease), transform .18s var(--ease);background:0 0;border:0;align-items:center;gap:10px;padding:11px 12px;display:flex}.nav-link:hover,.nav-button:hover{color:#fff;background:var(--blue-glass);transform:translate(3px)}.content{animation:fade-up .52s var(--ease) both;padding:clamp(20px,4vw,42px)}.page-header{justify-content:space-between;align-items:flex-start;gap:18px;margin-bottom:28px;display:flex}.page-header h1{letter-spacing:0;text-wrap:balance;margin:0;font-size:clamp(1.8rem,3vw,2.8rem);line-height:1.05}.page-header p{color:var(--muted);margin:8px 0 0}.grid{grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:18px;display:grid}.card{border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-soft);transition:transform .22s var(--ease), box-shadow .22s var(--ease), border-color .22s var(--ease), background .22s var(--ease);background:#ffffffe0;padding:20px}.card:hover{box-shadow:var(--shadow);background:#fff;border-color:#1769c247;transform:translateY(-3px)}.card h2,.card h3{margin:0 0 8px;line-height:1.18}.muted{color:var(--muted)}.section{margin-top:32px}.section h2{margin:0 0 14px}.question-card{max-width:860px}.choices{gap:11px;margin:22px 0;display:grid}.choice{border:1px solid var(--line);border-radius:var(--radius);transition:transform .18s var(--ease), border-color .18s var(--ease), background .18s var(--ease), box-shadow .18s var(--ease);background:#fff;grid-template-columns:22px 1fr;align-items:start;gap:12px;padding:15px;display:grid;box-shadow:0 8px 18px #10243d0a}.choice:hover{border-color:#1769c261;transform:translateY(-1px);box-shadow:0 12px 24px #10243d12}.choice.correct{border-color:var(--green);background:var(--green-soft)}.choice.wrong{border-color:var(--red);background:var(--red-soft)}.choice.neutral{background:var(--gray-soft)}.status-pill{color:var(--blue-dark);background:var(--blue-soft);border:1px solid #1769c21a;border-radius:999px;align-items:center;gap:6px;padding:6px 11px;font-size:.82rem;font-weight:800;display:inline-flex}.table{border-collapse:separate;border-spacing:0;width:100%}.table th,.table td{border-bottom:1px solid var(--line);text-align:left;vertical-align:top;padding:13px 10px}.table th{color:var(--muted);text-transform:uppercase;letter-spacing:.04em;font-size:.82rem}.table tr{transition:background .16s var(--ease)}.table tbody tr:hover{background:#1769c20a}.admin-grid{grid-template-columns:minmax(280px,.8fr) minmax(360px,1.2fr);gap:18px;display:grid}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:1ms!important;animation-duration:1ms!important;animation-iteration-count:1!important}}@media (max-width:820px){.auth-page,.app-shell,.admin-grid{grid-template-columns:1fr}.auth-intro{gap:48px;min-height:auto}.auth-panel{border-radius:0;width:auto;margin:0}.sidebar{height:auto;position:static}.sidebar nav{grid-template-columns:repeat(2,minmax(0,1fr))}.page-header{display:grid}}