:root{--bg:#f5f7fb;--card:#fff;--ink:#122033;--muted:#6d7888;--line:#dfe5ee;--primary:#3157d5;--primary2:#2445b8;--danger:#c93242;--success:#12805c;--shadow:0 16px 40px rgba(18,32,51,.08)}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.55 Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,sans-serif}.topbar{height:72px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 max(24px,calc((100vw - 1180px)/2));position:sticky;top:0;z-index:20}.brand{display:flex;gap:11px;align-items:center}.brandmark{width:38px;height:38px;border-radius:12px;background:linear-gradient(135deg,var(--primary),#6f86ef);color:#fff;display:grid;place-items:center;font-weight:900}.brand b,.brand small{display:block}.brand small{color:var(--muted);font-size:11px}.topbar nav{display:flex;gap:16px;align-items:center}.topbar a{color:var(--primary);text-decoration:none;font-weight:700}.userpill{background:#f0f3fa;padding:8px 12px;border-radius:999px}.page{max-width:1180px;margin:auto;padding:34px 24px 70px}footer{text-align:center;color:var(--muted);padding:30px}.auth-wrap{min-height:72vh;display:grid;place-items:center}.auth-card{width:min(460px,100%);background:#fff;border:1px solid var(--line);border-radius:24px;padding:34px;box-shadow:var(--shadow)}h1{font-size:clamp(30px,4vw,46px);line-height:1.05;margin:8px 0 12px}h2{margin:0 0 8px}h3{margin:7px 0}.eyebrow{font-size:12px;letter-spacing:.13em;font-weight:900;color:var(--primary)}p{color:var(--muted)}label{display:block;font-weight:700;margin:14px 0 6px}input,select,textarea{width:100%;border:1px solid #cfd6e2;background:#fff;padding:12px 13px;border-radius:12px;font:inherit;color:var(--ink);outline:none}input:focus,select:focus,textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(49,87,213,.12)}button,.btn{display:inline-block;border:0;border-radius:12px;padding:11px 16px;font-weight:800;text-decoration:none;cursor:pointer}.btn.primary{background:var(--primary);color:#fff}.btn.primary:hover{background:var(--primary2)}.btn.ghost{background:#fff;border:1px solid var(--line);color:var(--ink)}.wide{width:100%;text-align:center;margin-top:14px}.auth-links{text-align:center;margin-top:16px}.auth-links a{color:var(--primary);font-weight:800}.demo-note,.notice{background:#edf1fb;border:1px solid #d8e0f4;padding:14px;border-radius:14px;margin-top:18px}.alert{padding:12px 14px;border-radius:12px;margin:0 0 18px}.alert.error{background:#fff0f1;color:#9c2632;border:1px solid #f0c6cb}.alert.success{background:#ecfaf5;color:#116847;border:1px solid #bfe9da}.hero,.section-head{display:flex;align-items:center;justify-content:space-between;gap:24px;margin-bottom:26px}.hero{padding:26px 0}.hero p,.section-head p{margin:0}.status-dot{background:#e9f8f2;color:var(--success);padding:9px 13px;border-radius:999px;font-weight:800}.feature-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}.feature-card{display:block;background:#fff;border:1px solid var(--line);border-radius:22px;padding:26px;text-decoration:none;color:inherit;box-shadow:var(--shadow);transition:.2s}.feature-card:hover{transform:translateY(-3px);border-color:#bac8ef}.icon{width:52px;height:52px;border-radius:16px;background:#edf1ff;color:var(--primary);display:grid;place-items:center;font-size:23px;font-weight:900}.metrics{display:flex;gap:26px;border-top:1px solid var(--line);margin-top:18px;padding-top:18px}.metrics b{font-size:21px;display:block}.tabs{display:flex;gap:8px;margin-bottom:18px}.tab{background:#e9edf5;color:var(--muted)}.tab.active{background:var(--ink);color:#fff}.tabpane{display:none}.tabpane.active{display:block}.cards,.stack{display:grid;gap:15px}.assessment-card,.question,.panel,.stat,.admin-links a,.result-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px}.assessment-card{display:grid;grid-template-columns:1fr auto auto;gap:18px;align-items:center}.assessment-meta{display:flex;flex-direction:column;color:var(--muted);font-size:13px}.badge{display:inline-block;padding:5px 8px;border-radius:999px;font-size:10px;letter-spacing:.08em;font-weight:900}.badge.open{background:#e7f8f1;color:#147253}.badge.closed{background:#edf0f5;color:#566273}.badge.danger{background:#fdebed;color:#a82734}.empty{text-align:center;padding:40px;border:1px dashed #bdc7d6;border-radius:18px;color:var(--muted)}.exam-shell{max-width:860px;margin:auto}.exam-top{position:sticky;top:72px;background:rgba(245,247,251,.95);backdrop-filter:blur(8px);display:flex;justify-content:space-between;align-items:center;padding:18px 0;z-index:10}.timer{font-size:28px;font-weight:900;background:#111c2d;color:#fff;padding:10px 16px;border-radius:14px;min-width:110px;text-align:center}.question{margin-bottom:15px}.qhead{display:flex;justify-content:space-between;gap:20px}.choice{display:flex;gap:10px;align-items:center;border:1px solid var(--line);border-radius:12px;padding:11px 12px;font-weight:500}.choice input{width:auto}.cheat-banner{position:fixed;inset:72px 0 auto;background:#b32331;color:white;text-align:center;padding:16px;font-weight:900;z-index:99}.hidden{display:none}.result-card{display:flex;gap:28px;align-items:center;max-width:760px;margin:60px auto}.score-ring{width:150px;height:150px;flex:0 0 150px;border-radius:50%;border:13px solid #e9edf9;display:grid;place-content:center;text-align:center}.score-ring b{font-size:40px}.score-ring span{color:var(--muted)}.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.stat span{color:var(--muted)}.stat b{display:block;font-size:32px;margin-top:5px}.admin-links{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:20px}.admin-links a{text-decoration:none;color:var(--ink)}.admin-links b,.admin-links span{display:block}.admin-links span{color:var(--muted);margin-top:6px}.table-wrap{overflow:auto;background:#fff;border:1px solid var(--line);border-radius:18px}table{border-collapse:collapse;width:100%;min-width:850px}th,td{text-align:left;padding:15px;border-bottom:1px solid var(--line);vertical-align:top}th{font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);background:#fafbfd}td small{display:block;color:var(--muted)}td a{color:var(--primary);font-weight:800;text-decoration:none}.actions{display:flex;gap:12px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:4px 18px}.span2{grid-column:1/-1}.check{display:flex;gap:9px;align-items:center}.check input{width:auto}.two-col{display:grid;grid-template-columns:380px 1fr;gap:20px;align-items:start}.panel{box-shadow:var(--shadow)}.adminq{position:relative}.danger-link{color:var(--danger);font-weight:800;float:right}.filterbar{display:flex;max-width:600px;margin-bottom:18px}.filterbar label{width:100%}.student-list{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-bottom:18px}.student-row{display:flex;align-items:center;gap:11px;padding:12px;border:1px solid var(--line);border-radius:12px;margin:0}.student-row input{width:auto}.student-row span,.student-row small{display:block}.student-row small{color:var(--muted)}.answerbox{background:#f6f8fc;padding:12px 14px;border-radius:12px}.answerbox p{color:var(--ink);margin-bottom:0}.mark-form{max-width:450px;margin-top:20px}@media(max-width:760px){.feature-grid,.stat-grid,.admin-links,.student-list,.form-grid,.two-col{grid-template-columns:1fr}.span2{grid-column:auto}.assessment-card{grid-template-columns:1fr}.hero,.section-head,.result-card{align-items:flex-start;flex-direction:column}.topbar{padding:0 16px}.userpill{display:none}.page{padding:24px 16px}.score-ring{width:120px;height:120px;flex-basis:120px}}
