:root{--bg:#f6f8fb;--card:#fff;--border:#e5e9f0;--text:#14213d;--muted:#6b7280;--blue:#2563eb;--green:#16a34a;--red:#dc2626;--shadow:0 8px 30px rgba(20,33,61,.06)}*{box-sizing:border-box}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--bg);color:var(--text)}a{text-decoration:none;color:inherit}.shell{display:flex;min-height:100vh}.sidebar{width:250px;background:#fff;border-right:1px solid var(--border);padding:24px 16px;display:flex;flex-direction:column;position:sticky;top:0;height:100vh}.brand{font-size:20px;font-weight:800;padding:8px 12px 28px;color:#111827}.brand span{font-weight:600;color:var(--blue)}nav{display:grid;gap:5px}nav a,.signout{padding:11px 13px;border-radius:9px;color:#5b6475;font-size:14px}nav a.active{background:#edf4ff;color:var(--blue);font-weight:700}.signout{margin-top:auto}.main{flex:1;padding:28px 34px;max-width:1600px;margin:auto;width:100%}header{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:24px}.crumb{font-size:12px;color:var(--muted);margin-bottom:6px}h1{margin:0;font-size:27px}h2{margin:0;font-size:18px}.account{display:flex;flex-direction:column;text-align:right;font-size:14px}.account small{color:var(--muted);margin-top:4px}.grid{display:grid;gap:16px}.stats{grid-template-columns:repeat(4,minmax(0,1fr));margin-bottom:20px}.card{background:var(--card);border:1px solid var(--border);border-radius:14px;box-shadow:var(--shadow);padding:20px}.stat{display:flex;flex-direction:column;gap:10px}.stat span{color:var(--muted);font-size:13px}.stat strong{font-size:30px}.section-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}.muted{color:var(--muted);font-size:13px}.btn{display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--border);background:#fff;padding:9px 13px;border-radius:8px;font-weight:650;font-size:13px;cursor:pointer}.btn.primary{background:var(--blue);border-color:var(--blue);color:#fff}.btn.small{padding:6px 9px;font-size:12px}.btn.full{width:100%}.table-wrap{overflow:auto}table{width:100%;border-collapse:collapse;font-size:13px}th,td{text-align:left;padding:13px 10px;border-top:1px solid var(--border);white-space:nowrap}th{color:var(--muted);font-weight:600}.badge{display:inline-flex;padding:4px 8px;border-radius:999px;font-size:11px;text-transform:capitalize}.badge.success{background:#eaf8ef;color:var(--green)}.badge.neutral{background:#f1f3f6;color:#657084}.empty{padding:48px;text-align:center;color:var(--muted);border:1px dashed var(--border);border-radius:10px;margin-top:18px}.login-page{display:grid;place-items:center;min-height:100vh}.login-card{width:min(420px,calc(100% - 32px));background:#fff;border:1px solid var(--border);border-radius:16px;padding:30px;box-shadow:var(--shadow)}.login-card h1{margin-top:15px}.login-card form{display:grid;gap:16px;margin-top:24px}label{display:grid;gap:7px;font-size:13px;font-weight:650}input,select{width:100%;border:1px solid #d7dce5;border-radius:8px;padding:10px 11px;background:#fff;color:var(--text)}.alert{padding:10px;border-radius:8px;margin-top:16px;font-size:13px}.alert.error{background:#fff1f2;color:#b42318}.status{min-height:20px;font-size:12px;margin:8px 0}.status.ok{color:var(--green)}.status.bad{color:var(--red)}.question-toolbar{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.question-list{display:grid;gap:14px}.question-card{padding:0;overflow:hidden}.q-head{display:flex;align-items:center;gap:12px;padding:15px 18px;border-bottom:1px solid var(--border)}.q-head .question-title{font-weight:750}.q-head .spacer{flex:1}.q-head input{width:70px;padding:7px}.q-body{padding:18px}.collapsed .q-body{display:none}.editor-label{font-size:12px;font-weight:700;margin-bottom:7px}.editor{min-height:90px;border:1px solid #d7dce5;border-radius:8px;padding:12px;background:#fff}.editor:focus{outline:2px solid #c7d9ff}.rich{display:flex;gap:5px;margin-bottom:6px}.rich button{border:1px solid var(--border);background:#fff;border-radius:6px;padding:5px 8px;font-weight:700}.options{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:16px}.option{border:1px solid var(--border);border-radius:10px;padding:13px}.option-top{display:flex;align-items:center;gap:8px;margin-bottom:9px}.option-label{font-weight:750}.option-top .spacer{flex:1}.option select{width:auto;padding:6px}.option .editor{min-height:70px}.correct-wrap{font-size:11px;color:var(--muted);display:flex;align-items:center;gap:4px}.correct{width:auto}.danger{color:var(--red)}@media(max-width:900px){.sidebar{width:72px;padding:15px 8px}.brand{font-size:0;padding:8px}.brand:first-letter{font-size:20px}nav a{font-size:0;text-align:center}nav a::first-letter{font-size:18px}.signout{font-size:0}.main{padding:22px 16px}.stats{grid-template-columns:repeat(2,1fr)}}@media(max-width:640px){.options{grid-template-columns:1fr}.stats{grid-template-columns:1fr}.section-head{align-items:flex-start;gap:12px;flex-direction:column}header{align-items:flex-start;gap:10px;flex-direction:column}.account{text-align:left}}
.brand{gap:8px}.brand img{width:58px;height:58px;object-fit:contain}.brand span{color:#111827}.form-card{max-width:980px}.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.form-grid label{display:grid;gap:7px;font-size:13px;font-weight:650;color:#344054}.form-grid input,.form-grid select{height:44px;border:1px solid #d0d5dd;border-radius:9px;padding:0 12px;background:#fff;color:#111827}.form-grid .check{display:flex;align-items:center;grid-template-columns:auto 1fr;gap:8px}.form-grid .check input{width:16px;height:16px}.form-actions{grid-column:1/-1;display:flex;gap:8px;justify-content:flex-end;margin-top:6px}.tabs{display:flex;gap:5px;border-bottom:1px solid var(--border);margin-bottom:18px}.tabs a{padding:10px 13px;color:var(--muted);font-size:13px}.tabs a.active{color:var(--blue);font-weight:700;border-bottom:2px solid var(--blue)}.session-grid{display:grid;gap:12px}.session-card{box-shadow:none}.session-meta{display:flex;flex-wrap:wrap;gap:18px;color:var(--muted);font-size:12px}.session-menu{display:flex;gap:6px;flex-wrap:wrap}.loading{padding:30px;text-align:center;color:var(--muted)}.notice{padding:13px;border-radius:9px;background:#fff8e6;border:1px solid #f3d58a;color:#725b1c;margin-bottom:18px;font-size:13px}.item-row{display:flex;align-items:center;gap:18px;padding:13px 0;border-bottom:1px solid var(--border);font-size:13px}.item-row img{width:72px;height:48px;object-fit:cover;border-radius:6px}.builder-head{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-bottom:14px}.builder-head h2{font-size:24px;margin-top:10px}.back{font-size:13px;color:var(--blue)}.file-btn{display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--border);background:#fff;padding:9px 13px;border-radius:8px;font-weight:650;font-size:13px;cursor:pointer}.time-control{display:inline-flex;align-items:center;gap:5px;color:var(--muted);font-size:12px}.time-control input{width:62px;height:36px;border:1px solid #d0d5dd;border-radius:8px;padding:0 8px}.builder-head .question-toolbar{justify-content:flex-end}.question-card{box-shadow:none}.drag{cursor:grab;color:#98a2b3;font-size:16px}.icon-btn{border:1px solid var(--border);background:#fff;border-radius:7px;width:30px;height:30px;cursor:pointer;font-weight:700}.icon-btn.danger{color:var(--red)}.q-body{background:#fff}.editor{position:relative}.editor:empty:before{content:attr(data-placeholder);color:#98a2b3}.upload-inline{display:inline-flex;align-items:center;gap:7px;margin-top:8px;color:var(--muted);font-size:11px}.upload-inline input{font-size:11px}.rich button{cursor:pointer}.alert.success{background:#ecfdf3;border:1px solid #abefc6;color:#067647}.live-layout{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:16px}.live-stage{min-height:620px;background:#101828;color:#fff;display:flex;flex-direction:column}.live-top{display:flex;align-items:center;gap:15px;border-bottom:1px solid rgba(255,255,255,.12);padding-bottom:15px}.timer{margin-left:auto;font-size:32px;font-weight:800}.live-question{flex:1;display:flex;align-items:center;justify-content:center;text-align:center;padding:50px;font-size:34px;font-weight:750}.live-image{max-width:70%;max-height:260px;object-fit:contain;align-self:center}.live-options{display:grid;grid-template-columns:1fr 1fr;gap:12px}.live-option{padding:18px;border:1px solid rgba(255,255,255,.15);border-radius:12px;background:rgba(255,255,255,.06);display:flex;gap:12px}.live-option b{width:30px;height:30px;display:grid;place-items:center;border-radius:50%;background:#2563eb}.live-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:18px}.danger-btn{background:#b42318;color:#fff;border-color:#b42318}.comments{height:620px;display:flex;flex-direction:column}.comments-list{overflow:auto;flex:1}.comment{display:grid;grid-template-columns:1fr auto;gap:4px;padding:10px 0;border-bottom:1px solid var(--border);font-size:12px}.comment small{grid-column:1/-1;color:var(--muted)}.answer-buttons{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;margin-top:8px}.result-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-bottom:24px}.mt{margin-top:28px}.analytics{box-shadow:none;margin-top:10px}.distribution{display:flex;gap:8px;margin-top:12px;flex-wrap:wrap}.distribution span{background:#f2f4f7;border-radius:7px;padding:7px 10px;font-size:12px}
@media(max-width:900px){.live-layout{grid-template-columns:1fr}.comments{height:420px}.form-grid{grid-template-columns:1fr}.builder-head{align-items:flex-start;flex-direction:column}.builder-head .question-toolbar{justify-content:flex-start}}