:root{--bg:#f6f8fc;--card:#fff;--ink:#172033;--muted:#697386;--line:#e5e9f2;--primary:#3157e5;--primary-soft:#eef2ff;--nav:#11182b;--danger:#b42318;--success:#147a3f}*{box-sizing:border-box}body{margin:0;font:14px/1.5 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--ink)}a{color:var(--primary);text-decoration:none}code{font:12px/1.4 ui-monospace,SFMono-Regular,Menlo,monospace;background:#f2f4f7;padding:2px 6px;border-radius:5px}.shell{display:grid;grid-template-columns:260px 1fr;min-height:100vh}aside{background:var(--nav);color:#fff;padding:22px 18px;display:flex;flex-direction:column;gap:20px;position:sticky;top:0;height:100vh;overflow:auto}aside .brand{font-size:20px;padding:0 8px}nav{display:grid;gap:5px}nav a,.linkbtn{color:#dfe5ff;padding:9px 12px;border-radius:9px;background:none;border:0;text-align:left;font:inherit;cursor:pointer;width:100%}nav a:hover,.linkbtn:hover,nav a.active{background:#202a45;color:#fff}.nav-label{margin:14px 12px 3px;color:#8390b5;font-size:11px;font-weight:800;text-transform:uppercase;letter-spacing:.09em}.content{padding:28px;min-width:0}.content>header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;gap:16px}.content>header h2{margin:0}.subtitle{margin:4px 0 0;color:var(--muted)}.admin-user{background:#fff;border:1px solid var(--line);padding:8px 12px;border-radius:999px}.grid{display:grid;gap:16px}.stats{grid-template-columns:repeat(3,minmax(0,1fr));margin-bottom:18px}.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:20px;box-shadow:0 4px 18px rgba(20,32,65,.04)}.card-title{margin-top:0}.stats b{display:block;font-size:28px}.stats span{color:var(--muted)}.toolbar{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:14px}.btn,button{display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:9px;padding:10px 16px;background:var(--primary);color:#fff;font-weight:700;cursor:pointer;font:inherit}.btn-light{background:#fff!important;color:var(--ink)!important;border:1px solid var(--line)!important}.form{max-width:900px;display:grid;gap:16px}.form.compact{gap:12px}.form-actions,.quick-links{display:flex;flex-wrap:wrap;gap:10px}.hint{color:var(--muted);font-weight:400;font-size:12px}label{display:grid;gap:6px;font-weight:600}input,textarea,select{width:100%;padding:10px 12px;border:1px solid #ccd3e1;border-radius:8px;background:#fff;font:inherit;color:var(--ink)}input:focus,textarea:focus,select:focus{outline:2px solid #d9e0ff;border-color:#8ea2f3}.row{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.row.two{grid-template-columns:repeat(2,1fr)}.check{display:flex;align-items:center;gap:7px;font-weight:500}.check input{width:auto}.checks{display:flex;flex-wrap:wrap;gap:12px}.tablewrap{overflow:auto;padding:0}table{border-collapse:collapse;width:100%;min-width:720px}th,td{padding:13px 15px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}th{background:#fafbfe;font-size:12px;text-transform:uppercase;letter-spacing:.03em;color:#526079}tr:last-child td{border-bottom:0}.notice,.error{padding:12px 14px;border-radius:9px;margin-bottom:14px}.notice{background:#eaf8ee;color:#176b32}.error{background:#fff0f0;color:#9b2525}.error ul{margin:6px 0 0;padding-left:20px}.filters{display:flex;gap:8px;flex-wrap:wrap}.filters input,.filters select{width:auto;min-width:150px}.actions{display:flex;align-items:center;gap:12px;white-space:nowrap}.actions form{display:inline}.actions button,.text-danger{padding:0;background:none!important;color:var(--danger)!important;font-weight:600}.badge{display:inline-block;padding:4px 8px;border-radius:999px;font-size:12px;font-weight:700}.badge.success{background:#e8f7ee;color:var(--success)}.muted-badge{background:#f0f2f5;color:#697386}.muted{color:var(--muted)}.small{font-size:12px}.empty{text-align:center;color:var(--muted);padding:28px}.pager{display:flex;align-items:center;justify-content:center;gap:14px;margin-top:16px}.pager a,.pager span{padding:8px 11px;border-radius:8px;background:#fff;border:1px solid var(--line)}.pager-disabled{color:#a0a7b4}.split-grid{display:grid;grid-template-columns:minmax(280px,360px) minmax(0,1fr);gap:18px;align-items:start}.auth,.landing{min-height:100vh;display:grid;place-items:center}.login{width:min(420px,92vw)}.login h1{margin-bottom:4px}.login p{margin-top:0;color:var(--muted)}.hero{max-width:760px;text-align:center;padding:32px}.hero h1{font-size:54px;margin:12px 0}.hero p{font-size:18px;color:var(--muted);margin-bottom:25px}.pill{display:inline-block;padding:6px 10px;border-radius:999px;background:#e9edff;color:#2948bf;font-weight:700}@media(max-width:980px){.split-grid{grid-template-columns:1fr}}@media(max-width:820px){.shell{grid-template-columns:1fr}aside{position:static;height:auto}.stats,.row,.row.two{grid-template-columns:1fr}.toolbar,.filters{flex-direction:column;align-items:stretch}.filters input,.filters select{width:100%}.content{padding:18px}.hero h1{font-size:38px}.content>header{align-items:flex-start}.admin-user{display:none}}

/* Phase 3: Advanced Question Bank */
.filters-panel{margin-bottom:16px}.filter-grid{display:grid;grid-template-columns:repeat(4,minmax(140px,1fr));gap:12px;margin-bottom:12px}.bulkbar{display:flex;align-items:center;gap:10px;margin:12px 0}.bulkbar select{max-width:220px}.bulkbar input{width:auto}.tablewrap input[type=checkbox]{width:auto}.badge.pyq{background:#fff4dc;color:#8a5700;margin-top:5px}.status-draft{background:#f0f2f5;color:#5f6878}.status-review,.status-processing,.status-queued{background:#fff4dc;color:#8a5700}.status-published,.status-completed{background:#e8f7ee;color:#147a3f}.status-rejected,.status-failed{background:#fff0f0;color:#9b2525}.status-archived{background:#eceff4;color:#586174}.status-completed_with_errors{background:#fff1e7;color:#a04710}.question-form{display:grid;gap:16px}.form-section{display:grid;gap:15px}.form-section h3{margin:0}.option-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.option-card{border:1px solid var(--line);border-radius:12px;padding:14px;display:grid;gap:10px;background:#fbfcff}.top-gap{align-self:end;padding-bottom:10px}.exam-checks{max-height:220px;overflow:auto;padding:10px;border:1px solid var(--line);border-radius:10px}.image-note,.import-help{padding:12px;border-radius:9px;background:#f7f8fb;color:var(--muted)}.review-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;align-items:end}.sticky-actions{position:sticky;bottom:12px;display:flex;gap:10px;background:rgba(246,248,252,.94);padding:12px;border:1px solid var(--line);border-radius:12px;backdrop-filter:blur(8px);z-index:5}.danger-zone{margin-top:16px;display:flex;align-items:center;justify-content:space-between;gap:15px}.danger-btn{background:#b42318}.import-grid{margin-bottom:18px}.command-block{display:block;white-space:normal;padding:12px;margin:12px 0}.import-stats{grid-template-columns:repeat(4,minmax(0,1fr));margin-bottom:16px}.import-stats b{display:block;font-size:26px}.import-stats span{color:var(--muted)}
@media(max-width:1100px){.filter-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:820px){.filter-grid,.option-grid,.review-row,.import-stats{grid-template-columns:1fr}.bulkbar,.danger-zone{align-items:stretch;flex-direction:column}.bulkbar select{max-width:none}}

/* Phase 4: Mock Test Engine */
.builder-summary{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-bottom:16px}.builder-summary div{display:grid;gap:2px}.builder-summary strong{font-size:26px}.builder-summary span{color:var(--muted)}.builder-grid{grid-template-columns:minmax(0,1fr) minmax(420px,1fr)}.inline-score{display:flex;gap:6px;align-items:center}.inline-score input{width:78px;padding:7px}.inline-score button{padding:7px 10px}.locked-box{padding:12px;border-radius:9px;background:#fff4dc;color:#8a5700}
@media(max-width:1100px){.builder-grid{grid-template-columns:1fr}.builder-summary{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:700px){.builder-summary{grid-template-columns:1fr}.inline-score{flex-wrap:wrap}}