:root{--nav:#202c3c;--nav-2:#17212e;--ink:#222b36;--muted:#667281;--line:#d9dee5;--line-2:#e8ebef;--bg:#f5f6f8;--white:#fff;--blue:#2869c7;--blue-dark:#1f56a2;--teal:#167b73;--red:#c53e48;--amber:#a66405;--green:#26734d;--shadow:0 2px 8px rgba(25,36,50,.12);font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);font-size:15px}
*{box-sizing:border-box}body{margin:0;background:var(--bg);min-width:320px}button,input,select,textarea{font:inherit}button{cursor:pointer}a{color:var(--blue);text-decoration:none}.hidden{display:none!important}.boot{height:100vh;display:flex;align-items:center;justify-content:center;gap:12px;color:var(--muted)}.spinner{width:22px;height:22px;border:3px solid #d8dde5;border-top-color:var(--blue);border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}
.login-page{min-height:100vh;background:#fff}.login-nav{height:66px;background:var(--nav);display:flex;align-items:center;padding:0 34px;color:#fff}.brand{display:flex;align-items:center;gap:11px;color:#fff;font-weight:700;font-size:19px;white-space:nowrap}.brand-mark{display:grid;place-items:center;width:31px;height:31px;border:2px solid #fff;border-radius:4px;font-family:Georgia,serif;font-size:20px}.login-wrap{max-width:1040px;margin:0 auto;padding:88px 32px;display:grid;grid-template-columns:1.1fr .9fr;gap:96px}.login-copy h1{font-size:40px;line-height:1.15;margin:8px 0 18px;font-weight:650;letter-spacing:0}.login-copy p{color:#566273;font-size:18px;line-height:1.7;max-width:500px}.login-points{margin-top:34px;display:grid;gap:18px}.login-point{display:flex;gap:14px;align-items:flex-start}.login-point .check{display:grid;place-items:center;width:24px;height:24px;border-radius:50%;background:#e5f2ee;color:var(--green);font-weight:800}.login-card{border:1px solid var(--line);padding:31px 34px;box-shadow:0 3px 14px rgba(24,38,57,.1);align-self:start}.login-card h2{font-size:23px;margin:0 0 7px}.login-card .sub{color:var(--muted);margin:0 0 26px}.field{display:grid;gap:7px;margin-bottom:16px}.field label{font-size:13px;font-weight:650;color:#3c4755}.field input,.field select,.field textarea,.input{width:100%;border:1px solid #b8c0ca;border-radius:3px;background:#fff;padding:10px 11px;color:var(--ink);outline:none;min-height:40px}.field textarea{resize:vertical;min-height:86px}.field input:focus,.field select:focus,.field textarea:focus,.input:focus{border-color:var(--blue);box-shadow:0 0 0 2px rgba(40,105,199,.12)}.form-error{color:var(--red);background:#fff0f1;border:1px solid #efc1c5;padding:9px 11px;margin-bottom:15px;font-size:13px}.button{display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:38px;padding:8px 15px;border:1px solid transparent;border-radius:3px;font-weight:650;background:var(--blue);color:#fff}.button:hover{background:var(--blue-dark)}.button.block{width:100%}.button.secondary{background:#fff;color:#344052;border-color:#aeb8c4}.button.secondary:hover{background:#f5f7fa}.button.danger{background:#fff;color:var(--red);border-color:#dcaab0}.button.small{min-height:32px;padding:5px 10px;font-size:13px}.button:disabled{opacity:.55;cursor:not-allowed}.link-button{border:0;background:none;color:var(--blue);padding:0}.hint{font-size:12px;color:var(--muted);line-height:1.5}
.shell{min-height:100vh}.topbar{height:58px;background:var(--nav);color:#fff;display:flex;align-items:center;padding:0 23px;position:sticky;top:0;z-index:20;box-shadow:0 1px 3px rgba(0,0,0,.25)}.topbar .brand{width:233px;font-size:17px}.top-search{flex:1;max-width:560px;position:relative}.top-search input{width:100%;height:34px;background:#344254;border:1px solid #526074;color:#fff;border-radius:3px;padding:6px 12px 6px 34px}.top-search input::placeholder{color:#c4cbd4}.top-search:before{content:'⌕';position:absolute;left:11px;top:5px;color:#d8dee7;font-size:20px}.top-actions{margin-left:auto;display:flex;align-items:center;gap:8px}.top-action{height:34px;min-width:34px;border:0;background:transparent;color:#eef1f5;border-radius:3px;padding:0 9px}.top-action:hover{background:#344254}.avatar{width:31px;height:31px;border-radius:50%;background:#dae5f4;color:#254e83;display:grid;place-items:center;font-size:12px;font-weight:750;margin-left:4px}.layout{display:grid;grid-template-columns:232px minmax(0,1fr);min-height:calc(100vh - 58px)}.sidebar{background:#fff;border-right:1px solid var(--line);padding:20px 13px;position:sticky;top:58px;height:calc(100vh - 58px);overflow-y:auto}.side-label{text-transform:uppercase;color:#8893a0;font-size:10px;font-weight:750;margin:14px 10px 7px;letter-spacing:.7px}.side-link{display:flex;align-items:center;gap:10px;color:#394553;padding:9px 10px;border-radius:3px;margin:2px 0;font-size:14px}.side-link:hover{background:#f0f3f7}.side-link.active{background:#e8eef7;color:#194e91;font-weight:650}.side-icon{width:18px;text-align:center;color:#687789}.side-divider{height:1px;background:var(--line-2);margin:15px 8px}.side-course{display:block;padding:8px 10px;color:#45515e;font-size:13px;border-left:3px solid transparent}.side-course.active{border-left-color:var(--blue);background:#f2f5f9;color:#1f57a0;font-weight:650}.main{padding:31px 39px 60px;min-width:0}.content{max-width:1220px;margin:0 auto}.page-head{display:flex;justify-content:space-between;align-items:flex-start;gap:20px;margin-bottom:25px}.page-head h1{font-size:27px;font-weight:600;margin:0 0 6px;line-height:1.25}.page-head p{margin:0;color:var(--muted)}.head-actions{display:flex;gap:8px;flex-wrap:wrap}.section-title{font-size:17px;font-weight:650;margin:28px 0 13px}.empty{padding:42px 20px;text-align:center;color:var(--muted);border:1px dashed #bdc5ce;background:#fff}.empty strong{display:block;color:#394553;margin-bottom:6px}
.course-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(245px,1fr));gap:17px}.course-card{background:#fff;border:1px solid var(--line);border-top:5px solid var(--course-color,#315d9a);min-height:176px;padding:19px 20px;box-shadow:0 1px 2px rgba(20,33,50,.04);color:var(--ink);transition:.15s}.course-card:hover{box-shadow:var(--shadow);transform:translateY(-1px)}.course-code{font-size:11px;color:#6e7987;font-weight:750;text-transform:uppercase;margin-bottom:8px}.course-card h3{margin:0;font-size:18px;font-weight:650;line-height:1.35}.course-meta{color:var(--muted);font-size:13px;margin-top:7px}.course-foot{display:flex;justify-content:space-between;border-top:1px solid var(--line-2);margin-top:20px;padding-top:13px;font-size:12px;color:var(--muted)}.pill{display:inline-flex;align-items:center;border-radius:999px;padding:3px 8px;font-size:11px;font-weight:700;background:#edf1f5;color:#566272}.pill.green{background:#e5f3eb;color:#23643f}.pill.amber{background:#fff1d6;color:#855100}.pill.red{background:#fae6e8;color:#9c3039}.pill.blue{background:#e5eefb;color:#21599f}.table-wrap{background:#fff;border:1px solid var(--line);overflow-x:auto}.table{width:100%;border-collapse:collapse}.table th{text-align:left;background:#f7f8fa;color:#5e6b79;font-size:11px;text-transform:uppercase;font-weight:750;padding:11px 14px;border-bottom:1px solid var(--line)}.table td{padding:13px 14px;border-bottom:1px solid var(--line-2);font-size:13px}.table tr:last-child td{border-bottom:0}.table tbody tr:hover{background:#fafbfc}.table .title-cell{font-weight:650;color:#2c3948}.row-link{cursor:pointer}.tabs{display:flex;border-bottom:1px solid var(--line);margin-bottom:24px;gap:24px}.tab{border:0;background:transparent;padding:11px 2px 12px;color:#65717f;border-bottom:3px solid transparent;margin-bottom:-1px;font-size:14px}.tab.active{color:#245c9f;border-bottom-color:var(--blue);font-weight:650}.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}.stat{background:#fff;border:1px solid var(--line);padding:16px}.stat-value{font-size:25px;font-weight:650}.stat-label{font-size:12px;color:var(--muted);margin-top:5px}.notice{border-left:4px solid var(--blue);background:#edf4fc;padding:12px 15px;color:#37516f;font-size:13px;margin:15px 0}.notice.warning{border-color:#d18a1e;background:#fff6e5;color:#705225}.type-icon{width:35px;height:35px;border-radius:4px;display:grid;place-items:center;background:#e8eef7;color:#285b97;font-weight:750}.assignment-row{display:grid;grid-template-columns:44px minmax(180px,1fr) 130px 110px 110px 28px;gap:12px;align-items:center;background:#fff;border:1px solid var(--line);border-bottom:0;padding:13px 15px;cursor:pointer}.assignment-row:last-child{border-bottom:1px solid var(--line)}.assignment-row:hover{background:#fafbfc}.assignment-name{font-weight:650}.assignment-sub{font-size:12px;color:var(--muted);margin-top:3px}.muted{color:var(--muted)}.kebab{color:#84909d;font-size:20px}.crumbs{display:flex;gap:7px;color:#778391;font-size:12px;margin-bottom:13px}.crumbs a{color:#4d6f97}
.split-detail{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(280px,.7fr);gap:22px}.panel{background:#fff;border:1px solid var(--line)}.panel-head{padding:14px 17px;border-bottom:1px solid var(--line);font-weight:650;display:flex;align-items:center;justify-content:space-between}.panel-body{padding:17px}.detail-list{display:grid;grid-template-columns:150px 1fr;gap:11px;font-size:13px}.detail-list dt{color:var(--muted)}.detail-list dd{margin:0}.question-list{display:grid;gap:8px}.question-item{display:flex;align-items:center;justify-content:space-between;border:1px solid var(--line);padding:10px 12px;background:#fff}.question-title{font-size:13px;font-weight:600}.progress{height:7px;background:#e9edf2;border-radius:5px;overflow:hidden}.progress span{display:block;height:100%;background:var(--blue)}.submission-drop{border:2px dashed #b5bec9;text-align:center;padding:30px 20px;background:#fafbfc}.submission-drop input{max-width:100%}.online-question{padding:16px 0;border-bottom:1px solid var(--line-2)}.online-question h4{margin:0 0 11px}.online-question textarea{width:100%;min-height:110px;border:1px solid #b8c0ca;padding:10px}.score{font-weight:700;color:#214f86}.late{color:var(--amber);font-weight:650}
.grade-shell{height:calc(100vh - 58px);display:grid;grid-template-columns:190px minmax(360px,1fr) 350px;background:#e6e9ed}.grade-nav{background:#fff;border-right:1px solid #c9d0d8;overflow:auto}.grade-nav h3{font-size:13px;text-transform:uppercase;color:#6d7885;margin:17px 15px 8px}.grade-student{padding:10px 14px;border-left:3px solid transparent;font-size:12px;cursor:pointer;border-bottom:1px solid #edf0f3}.grade-student.active{background:#e8f0fb;border-left-color:var(--blue);color:#174f93;font-weight:650}.grade-viewer{padding:20px;overflow:auto;display:flex;align-items:flex-start;justify-content:center}.paper{background:#fff;box-shadow:0 2px 12px rgba(30,42,58,.2);width:min(100%,850px);min-height:900px;padding:45px;position:relative}.paper embed,.paper img{width:100%;min-height:760px;border:0}.paper-answer{white-space:pre-wrap;line-height:1.7;border-bottom:1px solid var(--line-2);padding:18px 0}.grade-panel{background:#fff;border-left:1px solid #c9d0d8;overflow:auto}.grade-panel-head{padding:15px;border-bottom:1px solid var(--line);position:sticky;top:0;background:#fff;z-index:2}.grade-panel-head h2{font-size:16px;margin:0 0 5px}.grade-panel-body{padding:15px}.grade-question{border:1px solid var(--line);margin-bottom:12px}.grade-question-head{display:flex;justify-content:space-between;align-items:center;padding:11px 12px;background:#f5f7f9;font-size:13px;font-weight:650}.grade-question-body{padding:11px}.rubric-item{display:grid;grid-template-columns:19px 1fr 50px;gap:7px;align-items:flex-start;padding:7px 0;font-size:12px}.rubric-item input[type=checkbox]{margin-top:2px}.rubric-points{text-align:right;font-weight:700}.score-input{width:72px;padding:6px;border:1px solid #aeb8c4}.comment-box{width:100%;min-height:60px;border:1px solid #bcc4ce;padding:7px;margin-top:8px;font-size:12px}.grade-footer{position:sticky;bottom:0;background:#fff;border-top:1px solid var(--line);padding:13px 15px;display:flex;gap:8px}
.modal-backdrop{position:fixed;inset:0;background:rgba(14,23,34,.48);z-index:100;display:flex;align-items:flex-start;justify-content:center;padding:7vh 18px;overflow:auto}.modal{background:#fff;width:min(620px,100%);box-shadow:0 10px 40px rgba(0,0,0,.3);border-radius:3px}.modal.wide{width:min(820px,100%)}.modal-head{padding:18px 21px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center}.modal-head h2{font-size:19px;margin:0}.modal-close{border:0;background:transparent;font-size:25px;color:#687583}.modal-body{padding:21px}.modal-foot{padding:14px 21px;border-top:1px solid var(--line);display:flex;justify-content:flex-end;gap:8px;background:#f8f9fa}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 15px}.form-grid .full{grid-column:1/-1}.check-row{display:flex;gap:9px;align-items:flex-start;margin:11px 0;font-size:13px}.check-row input{margin-top:2px}.question-edit-row{display:grid;grid-template-columns:64px 1fr 80px 70px 34px;gap:8px;margin-bottom:8px;align-items:center}.question-edit-row input{min-width:0}.icon-button{width:34px;height:34px;border:1px solid #bac3cd;background:#fff;color:#596777;border-radius:3px}.icon-button:hover{background:#f1f3f6}.toast{position:fixed;right:23px;bottom:23px;z-index:200;background:#263444;color:#fff;padding:12px 16px;box-shadow:var(--shadow);max-width:380px;font-size:13px;border-left:4px solid #5aa47c}.toast.error{border-left-color:#dd5b65}.bar-chart{height:190px;display:flex;align-items:flex-end;gap:6px;padding:18px 5px 0;border-bottom:1px solid var(--line)}.bar{flex:1;background:#6b90bd;min-height:3px;position:relative}.bar:hover{background:#356aa5}.bar span{position:absolute;bottom:100%;font-size:10px;color:#5d6875;left:50%;transform:translateX(-50%);padding-bottom:3px}.org-row{display:grid;grid-template-columns:1fr 130px 130px 100px;gap:15px;align-items:center;padding:15px;border-bottom:1px solid var(--line-2)}.org-row:last-child{border-bottom:0}.org-name{font-weight:650}.org-domain{font-size:12px;color:var(--muted);margin-top:3px}
@media(max-width:900px){.layout{grid-template-columns:1fr}.sidebar{display:none}.main{padding:24px 20px}.topbar .brand{width:auto}.top-search{display:none}.login-wrap{grid-template-columns:1fr;gap:35px;padding-top:48px}.login-copy{display:none}.split-detail{grid-template-columns:1fr}.assignment-row{grid-template-columns:40px 1fr 90px}.assignment-row>*:nth-child(4),.assignment-row>*:nth-child(5),.assignment-row>*:nth-child(6){display:none}.grade-shell{grid-template-columns:145px 1fr}.grade-panel{position:fixed;right:0;top:58px;bottom:0;width:min(350px,90vw);box-shadow:-3px 0 14px rgba(0,0,0,.2)}.stat-grid{grid-template-columns:1fr 1fr}}@media(max-width:600px){.topbar{padding:0 13px}.topbar .brand span:last-child{display:none}.main{padding:20px 13px}.page-head{display:block}.head-actions{margin-top:14px}.course-grid{grid-template-columns:1fr}.form-grid{grid-template-columns:1fr}.form-grid .full{grid-column:auto}.login-wrap{padding:42px 18px}.login-card{padding:25px 22px}.stat-grid{grid-template-columns:1fr 1fr}.detail-list{grid-template-columns:110px 1fr}.grade-shell{grid-template-columns:1fr}.grade-nav{display:none}.grade-viewer{padding:9px}.paper{padding:22px;min-height:700px}.grade-panel{width:94vw}.org-row{grid-template-columns:1fr 70px}.org-row>*:nth-child(3){display:none}}
.top-action{display:inline-flex;align-items:center;justify-content:center;text-decoration:none}
.org-actions,.lti-actions{display:flex;justify-content:flex-end;gap:8px;flex-wrap:wrap}.copy-field{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px}.copy-field input{min-width:0;border:1px solid #b8c0ca;border-radius:3px;background:#f8f9fa;padding:9px 10px;color:#3d4957}.lti-section{border:1px solid var(--line);margin-bottom:18px}.lti-section .panel-head{background:#f7f8fa}.lti-section .panel-body{padding:18px}.lti-section .hint{line-height:1.6}@media(max-width:600px){.copy-field{grid-template-columns:1fr}.org-actions{justify-content:flex-start}.lti-section .panel-head{align-items:flex-start;gap:10px}}