:root{--ink:#18263d;--sub:#697994;--line:#e2e9f2;--bg:#f4f7fb;--white:#fff;--blue:#375de6;--blue-soft:#eaf0ff;--nav:#101d32;--nav-soft:#233756;--green:#137a5d;--green-soft:#e5f7ef;--amber:#a3650c;--amber-soft:#fff4dd;--red:#ad4141;--red-soft:#fff0ef;--shadow:0 12px 35px rgba(21,42,74,.055)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font:14px/1.5 Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Arial,sans-serif}button,input,select,textarea{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.5}h1,h2,h3,p{margin-top:0}h1{font-size:25px;letter-spacing:-.035em;margin-bottom:3px}h2{font-size:17px;letter-spacing:-.02em;margin-bottom:9px}h3{font-size:14px;margin-bottom:7px}p{margin-bottom:12px}a{color:#3156d0}small,.muted{color:var(--sub)}[hidden]{display:none!important}
.login-screen{min-height:100vh;display:grid;place-items:center;padding:20px;background:radial-gradient(circle at 80% 0,#dde6ff,transparent 42%),var(--bg)}.login-card{width:min(410px,100%);background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);padding:32px}.login-card h1{margin-top:16px}.login-card p{color:var(--sub);margin-bottom:24px}.login-card label,.field label{display:block;font-size:12px;font-weight:750;color:#435671;margin-bottom:6px}.login-card input,.field input,.field select,.field textarea,.scope-panel input,.side-select{width:100%;border:1px solid #d9e3ef;border-radius:9px;padding:10px 11px;outline:none;background:#fff;color:var(--ink)}.login-card input:focus,.field input:focus,.field select:focus,.field textarea:focus,.scope-panel input:focus,.side-select:focus{border-color:#8da2f5;box-shadow:0 0 0 3px #e9eeff}.login-card input{margin-bottom:15px}.form-error{color:var(--red);font-size:12px;margin-top:10px;min-height:18px}.logo-mark{display:grid;place-items:center;width:44px;height:44px;border-radius:12px;background:#4867ee;color:#fff;font-size:25px;font-weight:800}.logo-mark.small{height:33px;width:33px;font-size:19px;flex:none}
.dialog-input{width:100%;border:1px solid #d9e3ef;border-radius:9px;padding:10px 11px;outline:none}
.app{min-height:100vh;display:grid;grid-template-columns:238px minmax(0,1fr)}.sidebar{background:var(--nav);color:#e0e9f9;padding:22px 14px;display:flex;flex-direction:column;gap:14px}.brand{display:flex;gap:10px;align-items:center;padding:0 8px;margin-bottom:8px}.brand strong{display:block;color:white;font-size:16px;line-height:1.1}.brand small{font-size:11px;color:#92a6c6}.side-label{color:#8196b6;font-size:10px;font-weight:800;letter-spacing:.13em;padding:0 9px}.side-select{background:#1d2e4a;color:#fff;border-color:#2c4262}.menu-label{margin-top:14px}.main-nav{display:grid;gap:3px}.main-nav button{display:flex;align-items:center;gap:11px;background:transparent;border:0;border-radius:9px;color:#b6c6dc;text-align:left;padding:10px 12px;font-weight:650}.main-nav button span{font-size:17px;width:19px;text-align:center}.main-nav button:hover,.main-nav button.active{background:var(--nav-soft);color:#fff}.main-nav button.active{box-shadow:inset 3px 0 #7890ff}.side-bottom{margin-top:auto;border-top:1px solid #2b3d59;padding:15px 9px 0;color:#a5b5d0;font-size:11px}.side-logout{border:0;background:none;color:#d9e3f5;padding:0;margin-top:12px;text-decoration:underline}.main{min-width:0;padding:22px 26px 40px}.topbar{display:flex;justify-content:space-between;align-items:center;color:#61718c;font-size:11px;margin-bottom:20px;letter-spacing:.07em;font-weight:750}.breadcrumb{color:#98a5b7}.admin-badge{border-radius:50px;background:#e6edff;color:#4260b8;padding:5px 9px}.page-heading{display:flex;justify-content:space-between;gap:15px;align-items:end;margin-bottom:18px}.page-heading p{color:var(--sub);margin:0}.workspace{display:grid;grid-template-columns:230px minmax(0,1fr);gap:16px;align-items:start}.panel{background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow)}.scope-panel{padding:15px;position:sticky;top:16px;max-height:calc(100vh - 32px);overflow:auto}.panel-title{font-weight:800;margin-bottom:11px}.scope-panel input{font-size:12px;margin-bottom:13px}.tree-topic{font-size:10px;font-weight:850;color:#8493a9;letter-spacing:.09em;text-transform:uppercase;margin:14px 6px 6px}.tree-reading,.tree-los{display:block;width:100%;text-align:left;border:0;background:none;border-radius:8px;padding:7px;color:#667793;font-size:12px}.tree-reading{font-weight:650}.tree-los{padding-left:19px}.tree-reading:hover,.tree-los:hover,.tree-los.active{background:#edf2ff;color:#3354c5}.tree-los.active{font-weight:800}.tree-empty{padding:12px 5px;color:#8492a6;font-size:12px}.page-content{min-width:0;display:grid;gap:16px}.content-panel{padding:20px}.content-panel-header{display:flex;justify-content:space-between;align-items:start;gap:16px;margin-bottom:17px}.content-panel-header p{font-size:12px;color:var(--sub);margin:0}.eyebrow{font-size:10px;text-transform:uppercase;letter-spacing:.13em;font-weight:850;color:#7788a2;margin-bottom:6px}.split{display:grid;grid-template-columns:minmax(360px,1fr) minmax(320px,.83fr);gap:16px;align-items:start}.stack{display:grid;gap:16px}.field{margin-bottom:15px}.field textarea{resize:vertical;min-height:90px}.field textarea.tall{min-height:300px;font-family:inherit;line-height:1.65}.field-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}.helper{font-size:11px;color:#8491a4;margin-top:5px}.row{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.row.end{justify-content:flex-end}.row.between{justify-content:space-between}.btn{border:1px solid #d5dfeb;background:#fff;color:#3d506c;padding:9px 12px;border-radius:9px;font-weight:750;display:inline-flex;align-items:center;justify-content:center;gap:6px}.btn:hover{background:#f8faff;border-color:#aebddb}.btn.primary{background:var(--blue);border-color:var(--blue);color:#fff;box-shadow:0 5px 13px #375de627}.btn.primary:hover{background:#2c4ecc}.btn.danger{color:var(--red);border-color:#eecaca}.btn.small{padding:6px 9px;font-size:11px}.btn.wide{width:100%}.btn.linklike{border:0;background:none;color:#3156c9;padding:2px 0}.pill{display:inline-flex;align-items:center;border-radius:50px;font-size:10px;font-weight:800;padding:5px 8px;background:#eff2f7;color:#69798f;white-space:nowrap}.pill.green{background:var(--green-soft);color:var(--green)}.pill.amber{background:var(--amber-soft);color:var(--amber)}.pill.red{background:var(--red-soft);color:var(--red)}.notice{border-radius:10px;background:#e8f4ef;border:1px solid #bee6d2;color:#1b7053;padding:10px 13px;margin-bottom:15px;font-weight:650}.notice.error{background:var(--red-soft);border-color:#f0c8c4;color:var(--red)}.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.stat{padding:16px}.stat strong{display:block;font-size:25px;letter-spacing:-.035em}.stat span{font-size:11px;color:var(--sub);font-weight:650}.table-wrap{overflow:auto}.data-table{width:100%;border-collapse:collapse;font-size:12px}.data-table th{text-align:left;color:#71819a;font-size:10px;letter-spacing:.07em;text-transform:uppercase;padding:9px 8px;border-bottom:1px solid var(--line)}.data-table td{padding:11px 8px;border-bottom:1px solid #edf1f6;vertical-align:top}.data-table tr:last-child td{border:0}.data-table strong{display:block}.item-card{border:1px solid var(--line);border-radius:10px;padding:13px;margin-bottom:9px}.item-card.active{border-color:#aebffb;background:#f8faff}.item-card strong{display:block}.item-card p{font-size:12px;color:var(--sub);margin:4px 0 8px}.item-card .row{margin-top:8px}.upload-zone{border:1.5px dashed #b9c8e2;border-radius:12px;background:#f9fbff;text-align:center;padding:22px;margin-bottom:14px}.upload-zone input{max-width:100%}.upload-zone p{font-size:12px;color:var(--sub)}.progress-line{font-size:12px;color:#52647d;padding:9px 12px;background:#f2f5fa;border-radius:8px;margin-top:12px}.preview-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.preview-shell{background:#f9fbff;padding:15px;border:1px solid #ecf0f6;border-radius:11px;min-height:260px}.student-card{background:#fff;border:1px solid #e5ebf3;border-radius:11px;padding:18px;overflow-wrap:anywhere;font-size:13px;line-height:1.7}.student-card h2{font-size:19px;line-height:1.3}.student-card h3{font-size:15px}.student-card img{max-width:100%;height:auto;border-radius:7px}.student-card .objective{background:#eef3ff;border-left:3px solid #6380f4;padding:10px 11px;margin:12px 0}.student-card .body-copy{line-height:1.75}.student-card .body-copy p{margin:0 0 12px}.student-card .body-copy ul{padding-left:20px}.student-card .body-copy hr{border:0;border-top:1px solid var(--line);margin:17px 0}.choice{display:flex;gap:9px;text-align:left;width:100%;border:1px solid #dbe4f0;border-radius:9px;padding:9px 10px;margin-top:7px;background:#fff;color:var(--ink)}.choice:hover{border-color:#afbcf5;background:#f7f9ff}.choice.selected{border-color:#5c7bf3;background:#eff3ff}.choice.correct{border-color:#7bc9aa;background:#ebf8f1}.choice.wrong{border-color:#e9a0a0;background:#fff0f0}.choice-letter{display:grid;place-items:center;min-width:20px;height:20px;border-radius:5px;background:#edf1f7;font-weight:850;color:#546985}.feedback{margin-top:13px;border-radius:9px;background:#e9f8f0;color:#236c51;padding:10px}.feedback.wrong{background:#fff0ec;color:#9e4632}.option-input{display:grid;grid-template-columns:22px 20px 1fr 25px;gap:7px;align-items:center;margin-bottom:7px}.option-input input[type=radio]{accent-color:var(--blue)}.option-input input[type=text]{width:100%;border:1px solid #d9e3ef;border-radius:8px;padding:9px}.option-input .remove{border:0;background:none;color:#8d9bb0;font-size:19px}.tabs{display:flex;gap:4px;flex-wrap:wrap}.tabs button{border:1px solid #dbe3ed;background:#fff;border-radius:8px;padding:6px 9px;color:#687994;font-size:11px;font-weight:750}.tabs button.active{background:var(--blue-soft);color:#3154c4;border-color:#b6c5fb}.empty{color:#8190a5;padding:15px 0;font-size:13px}.dialog{border:0;border-radius:16px;padding:25px;width:min(440px,calc(100% - 30px));box-shadow:0 30px 80px #17213c66}.dialog::backdrop{background:#14213eb0}.dialog p{color:#65758e}.section-divider{border:0;border-top:1px solid var(--line);margin:18px 0}.asset-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(110px,1fr));gap:9px}.asset-tile{border:1px solid var(--line);border-radius:9px;padding:7px;background:#fff;text-align:left;font-size:10px;color:#5b6d85}.asset-tile img{width:100%;height:75px;object-fit:contain;background:#f5f7fb;border-radius:5px}.asset-tile span{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.codehint{font-family:ui-monospace,Consolas,monospace;background:#f3f6fb;padding:2px 5px;border-radius:4px}.mini-list{padding-left:17px;color:#687892;font-size:12px}.mini-list li{margin:4px 0}
@media(max-width:1300px){.split{grid-template-columns:1fr}.workspace{grid-template-columns:205px minmax(0,1fr)}.main{padding:18px}}@media(max-width:850px){.app{display:block}.sidebar{padding:12px;gap:7px}.brand,.side-label,.side-select,.side-bottom{display:none}.main-nav{display:flex;overflow:auto}.main-nav button{white-space:nowrap;padding:7px 9px;font-size:12px}.main{padding:15px}.topbar{display:none}.workspace{display:block}.scope-panel{position:static;max-height:190px;overflow:auto;margin-bottom:14px}.page-heading{align-items:start}.stat-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:550px){.field-row{grid-template-columns:1fr}.page-heading{display:block}.page-heading #page-action{margin-top:10px}.stat-grid{grid-template-columns:1fr 1fr}.content-panel{padding:15px}}