:root{--ink:#153047;--muted:#607387;--navy:#122d43;--teal:#087f78;--teal-dark:#056a65;--line:#dce7e9;--paper:#fff;--bg:#f5f8f8;--mint:#e6f6f1;--amber:#a66615;--red:#bb4d58;--shadow:0 10px 34px rgba(22,53,70,.055)}
*{box-sizing:border-box}
body{margin:0;color:var(--ink);background:radial-gradient(circle at 100% 0,#e4f4f0 0,transparent 32rem),var(--bg);font:15px/1.6 'DM Sans',system-ui,sans-serif;min-height:100vh}
header{height:76px;background:var(--navy);color:white;display:flex;align-items:center;justify-content:space-between;padding:0 max(24px,calc((100vw - 1240px)/2));box-shadow:0 3px 14px #122d4318}
.brand{display:flex;align-items:center;gap:11px;color:white;text-decoration:none;font:800 23px/1 Manrope,system-ui,sans-serif;letter-spacing:-.055em}.brandmark{height:35px;width:35px;border-radius:11px;background:#d5f6e8;color:#0a716d;display:grid;place-items:center;font-size:22px;letter-spacing:0}.header-right{display:flex;align-items:center;gap:20px}#identity{font-size:13px;color:#d0e4e9;font-weight:600}
main{max-width:1240px;margin:0 auto;padding:38px 24px 80px;min-height:calc(100vh - 135px)}footer{text-align:center;color:#8497a4;font-size:12px;padding:0 12px 26px}footer span{margin:0 4px}
h1,h2,h3{font-family:Manrope,'DM Sans',system-ui,sans-serif;line-height:1.25;letter-spacing:-.035em;color:var(--navy)}h1{font-size:clamp(30px,4vw,42px);margin:10px 0}h2{font-size:20px;margin:0 0 10px}h3{font-size:16px;margin:0 0 12px}p{color:var(--muted);margin:8px 0 20px}.muted{color:var(--muted)}.hint{font-size:12px;color:#74899a}.eyebrow{color:var(--teal);font-weight:800;font-size:11px;letter-spacing:.15em;text-transform:uppercase;margin-top:24px}
.card{background:var(--paper);border:1px solid var(--line);border-radius:19px;padding:25px;margin-bottom:20px;box-shadow:var(--shadow)}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(225px,1fr));gap:18px}.grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.row.between{justify-content:space-between}.row h2{margin:0 auto 0 0}
button,.button{appearance:none;background:var(--teal);border:1px solid var(--teal);color:#fff;border-radius:10px;padding:11px 17px;font:700 14px/1.3 'DM Sans',system-ui,sans-serif;cursor:pointer;transition:background .15s,transform .15s,box-shadow .15s}button:hover:not(:disabled){background:var(--teal-dark);box-shadow:0 5px 14px #087f782c;transform:translateY(-1px)}button:active:not(:disabled){transform:translateY(0)}button.secondary{background:#edf5f3;border-color:#d8ebe6;color:#116e69}button.secondary:hover:not(:disabled){background:#dff0ec}button.danger{background:var(--red);border-color:var(--red)}button.small{padding:8px 13px;font-size:12px}button:disabled{opacity:.45;cursor:not-allowed}button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid #70cfb9;outline-offset:2px}
label{font-weight:700;font-size:13px;color:#345166;display:block}input,textarea,select{display:block;width:100%;border:1px solid #cddfe3;border-radius:10px;padding:11px 13px;font:500 14px/1.5 'DM Sans',system-ui,sans-serif;color:var(--ink);background:#fbfdfd;margin:7px 0 17px;transition:border-color .15s,box-shadow .15s}input:hover,textarea:hover,select:hover{border-color:#9ebdbf}textarea{min-height:94px;resize:vertical}input[type=checkbox],input[type=radio]{width:auto;margin:0;accent-color:var(--teal)}.check{display:flex;align-items:center;gap:10px}
.tabs{margin:25px 0}.tabs button{border-radius:999px}.tabs button.secondary{border-color:transparent}.badge{display:inline-flex;align-items:center;background:#e3f3ed;color:#0b766d;border-radius:999px;padding:4px 11px;font-size:11px;font-weight:800;letter-spacing:.03em}.stat{font:800 32px/1.2 Manrope,system-ui,sans-serif;color:var(--navy);margin:8px 0}.empty{padding:28px;text-align:center;color:#7b909b}.scroll{overflow-x:auto}table{width:100%;border-collapse:collapse}th{text-transform:uppercase;font-size:10px;letter-spacing:.1em;color:#7d929e}td,th{text-align:left;padding:14px 10px;border-bottom:1px solid #eaf0f0}tr:last-child td{border-bottom:0}td{font-size:13px}a{color:var(--teal)}svg{width:100%;height:auto;max-height:270px}.auth{max-width:460px;margin:54px auto;padding:35px}.auth h1{font-size:38px}.auth button{width:100%}.auth .badge{margin-bottom:10px}
.editor-head{margin-bottom:26px}.editor-head>button{margin-bottom:10px}.section-heading{display:flex;align-items:flex-start;gap:14px;margin-bottom:24px}.section-heading h2{margin:1px 0 3px}.section-heading p{margin:0;font-size:13px}.step{width:38px;height:38px;flex:none;border-radius:12px;background:#e2f5ec;display:grid;place-items:center;color:var(--teal);font-weight:800}.settings{padding:30px}.publish{display:flex;align-items:center;gap:12px;background:#f2faf7;border:1px solid #d9eee6;border-radius:12px;padding:14px 15px;cursor:pointer}.publish span{display:grid}.publish strong{font-size:13px}.publish small{font-size:12px;color:var(--muted);font-weight:400}.questions-heading{margin:30px 0 18px}.editorq{padding:28px}.question-number{font:800 14px Manrope,sans-serif;color:var(--teal);text-transform:uppercase;letter-spacing:.06em}.editorq>.row:first-child{margin-bottom:19px}.field-title{font-size:13px;font-weight:700;color:#345166;margin-bottom:10px}.field-title span{font-weight:400;color:var(--muted);margin-left:6px}.option-editor{display:grid;gap:10px;margin-bottom:14px}.option-row{display:flex;align-items:center;gap:10px}.option-row input[type=text],.option-row>input{margin:0;flex:1}.correct-radio{display:flex;align-items:center;gap:7px;cursor:pointer}.correct-radio span{width:31px;height:31px;border-radius:9px;background:#e7f0f0;color:var(--teal);display:grid;place-items:center;font-weight:800}.correct-radio:has(input:checked) span{background:var(--teal);color:white}.icon-button{width:34px;height:34px;padding:0;font-size:21px;background:#f3f6f6;border-color:#e1e8e8;color:#87969b}.icon-button:hover:not(:disabled){background:#fbe9e9;color:#b94751}.question-fields{margin-top:23px}.question-fields textarea{min-height:74px}.editor-actions{justify-content:space-between;margin-top:25px}.editor-actions button:last-child{min-width:188px}
.exam{display:grid;grid-template-columns:255px minmax(0,1fr);gap:22px;align-items:start}.navigator{position:sticky;top:18px}.navigator h3{margin-bottom:14px}.qgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.qnav{min-height:54px;padding:5px 3px;background:#eef3f4;border:1px solid #e1eaeb;color:#345166;font:800 15px Manrope,sans-serif}.qnav small{display:block;font:600 11px 'DM Sans',sans-serif}.qnav.marked{background:#d9f3e8;border-color:#b8e5d2;color:#0d7355}.qnav.skipped{background:#fff0d9;border-color:#f5ddaf;color:#92621b}.qnav.expired{background:#e7e9eb;border-color:#e0e3e5;color:#8b969d}.qnav.active{outline:3px solid #6bc7af;outline-offset:1px}.navigator>button:last-child{width:100%;margin-top:15px}.questiontext{white-space:pre-wrap;font:700 clamp(20px,2vw,26px)/1.45 Manrope,sans-serif;color:var(--navy);margin:22px 0}.option{padding:14px 17px;border:1px solid #d8e6e8;border-radius:11px;display:flex;align-items:center;gap:13px;margin:10px 0;cursor:pointer;white-space:pre-wrap;background:#fff;transition:background .15s,border-color .15s}.option:hover{border-color:#8ccbc0;background:#f7fcfa}.option.selected{border-color:var(--teal);background:#ecf8f3;box-shadow:inset 0 0 0 1px var(--teal)}.option.correct{border-color:#78cfaa;background:#e8f8ee}.option.wrong{border-color:#ec9fa7;background:#fff0f0}.timer{font:800 25px Manrope,sans-serif;color:var(--teal)}.correct{border-left:5px solid #42b882}.wrong{border-left:5px solid #d96d73}.explanation{white-space:pre-wrap;background:#f0f7f5;border:1px solid #dcece7;padding:18px;border-radius:12px;color:#405b64}.reviewnav{margin-bottom:16px}.reviewnav button{min-width:38px;padding:8px}.reviewnav+.card{box-shadow:none;background:#fbfdfd}
.overall-timer{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:12px 13px;margin:0 0 16px;border:1px solid #cfe8df;border-radius:11px;background:#edf8f3;color:#206d5f}.overall-timer span{font-size:12px;font-weight:700}.overall-timer strong{font:800 19px Manrope,system-ui,sans-serif;font-variant-numeric:tabular-nums}
.qnav.locked{filter:grayscale(.5);opacity:.62;box-shadow:inset 0 0 0 1px #bbc8ca}
.option:has(input:disabled){cursor:default}.option:has(input:disabled):hover{border-color:#d8e6e8;background:#fff}.option.selected:has(input:disabled):hover{border-color:var(--teal);background:#ecf8f3}
.history-actions{display:flex;flex-wrap:wrap;gap:6px;min-width:250px}.history-actions button{white-space:nowrap}.danger{background:#fff1f1;color:#ab3943;border-color:#eec2c6}.danger:hover:not(:disabled){background:#ffe4e5;border-color:#d99098}.import-text{min-height:310px;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;line-height:1.55}.import-questions{display:grid;gap:10px;max-height:420px;overflow:auto;margin:18px 0}.import-questions details{border:1px solid #e0e9e9;border-radius:10px;padding:12px 15px}.import-questions summary{cursor:pointer;font-weight:700}.import-questions ol{margin-bottom:10px}.import-doc pre{white-space:pre-wrap;overflow-wrap:anywhere;background:#f5f8f7;border:1px solid #dce8e5;padding:18px;border-radius:12px}.import-doc code{font-family:ui-monospace,SFMono-Regular,Consolas,monospace}
.badge.inactive{background:#fff0ec;color:#a44847}.account-actions{display:flex;flex-wrap:wrap;gap:6px;min-width:210px}.account-actions button{white-space:nowrap}
.assignment-settings{margin-top:22px;padding-top:20px;border-top:1px solid var(--line)}.assignment-settings .hint{margin:2px 0 14px}.assignment-settings [hidden]{display:none}.assignment-settings .row{margin:8px 0 12px}.assignment-list{max-height:240px;overflow:auto;display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:8px;padding:5px}.assignment-student{display:flex;align-items:center;gap:10px;border:1px solid var(--line);border-radius:10px;padding:10px 12px;cursor:pointer}.assignment-student:has(input:checked){background:#ebf8f2;border-color:#9bd9c5}.assignment-student small{display:block;color:var(--muted);font-weight:400}.assignment-student input{flex:none}
.editor-top-actions{margin-bottom:16px}.editor-top-actions button{white-space:nowrap}
.image-field{margin:12px 0 23px;padding:16px;border:1px dashed #bbd6d3;border-radius:12px;background:#f8fcfa}.image-field input{margin-bottom:5px}.image-field .hint{margin:2px 0 12px}.image-preview{display:flex;align-items:flex-start;gap:14px;flex-wrap:wrap}.image-preview img{max-width:min(100%,320px);max-height:220px;object-fit:contain;border-radius:9px;border:1px solid var(--line);background:white}.question-image{display:block;max-width:100%;max-height:420px;object-fit:contain;margin:0 0 22px;border-radius:12px;border:1px solid var(--line);background:white}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.exam-toolbar{position:sticky;top:0;z-index:5;display:flex;align-items:center;gap:16px;justify-content:space-between;background:#f8fbfa;border:1px solid var(--line);border-radius:15px;padding:12px 15px;margin-bottom:12px;box-shadow:0 8px 22px #122d431c}.exam-toolbar>div:first-child{min-width:0}.exam-toolbar strong{color:var(--navy)}.progress-summary{font-size:12px;color:var(--muted)}.exam-toolbar .overall-timer{margin:0;min-width:165px;flex:none}.exam-tools{display:flex;gap:7px;flex-wrap:wrap}.exam-tools button{white-space:nowrap}.deadline-warning,.connection-notice{border-radius:10px;padding:11px 14px;margin:10px 0;font-weight:700}.deadline-warning{background:#fff0d9;color:#875615}.connection-notice{background:#fff1f1;color:#963e46}.deadline-warning[hidden],.connection-notice[hidden]{display:none}
.exam .navigator{top:92px;max-height:calc(100vh - 110px);overflow:auto}.navigator summary{cursor:pointer;font-weight:800;color:var(--navy);margin-bottom:12px}.navigator summary span{font-weight:500;font-size:12px;color:var(--muted)}.navigator select{margin:5px 0 12px}.navigator .qgrid{max-height:min(50vh,520px);overflow-y:auto;padding:3px;align-content:start}.navigator .qnav{min-height:58px;line-height:1.1}.navigator .qnav small{font-size:10px;margin-top:4px}.qnav.unanswered{background:#e9f1fa;border-color:#cbdced;color:#345f83}.qnav[hidden]{display:none}.question-card{min-width:0}.question-card fieldset{border:0;margin:0;padding:0;min-width:0}.question-actions{margin-top:18px}.save-status{font-size:13px;font-weight:700;color:#416a65;margin:10px 0 0}.submit-questions{max-height:35vh;overflow:auto;border:1px solid var(--line);border-radius:10px;padding:12px}.submit-questions .row{gap:6px}.submit-questions button{min-width:42px}.exam dialog{border:0}.exam~dialog,dialog#submitdialog{border:1px solid var(--line);border-radius:16px;padding:25px;max-width:min(92vw,650px);box-shadow:0 18px 60px #15304744;color:var(--ink)}dialog#submitdialog::backdrop{background:#122d4388}
#toast{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);background:#173d4d;color:white;padding:12px 20px;border-radius:11px;display:none;z-index:10;box-shadow:0 10px 30px #16374940;max-width:min(90vw,560px);text-align:center}button.link{background:transparent;border:0;color:var(--teal);padding:0;box-shadow:none}
@media(max-width:760px){header{padding:0 16px;height:66px}.brand{font-size:19px}.brandmark{width:30px;height:30px}.header-right{gap:9px}#identity{max-width:120px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:11px}main{padding:25px 14px 60px}.card{padding:19px}.grid.two{grid-template-columns:1fr}.exam{grid-template-columns:1fr}.navigator{position:static}.qgrid{grid-template-columns:repeat(6,minmax(0,1fr))}.qnav{min-height:48px}h1{font-size:30px}.editorq{padding:18px}.auth{margin-top:25px}.tabs{gap:5px}.tabs button{font-size:12px;padding:9px 11px}}
@media(max-width:450px){.qgrid{grid-template-columns:repeat(5,minmax(0,1fr))}.field-title span{display:block;margin-left:0}.option-row{gap:6px}.editor-actions button{width:100%}.header-right button{padding:7px 9px}.questiontext{font-size:19px}}
@media(max-width:760px){.exam-toolbar{display:grid;grid-template-columns:1fr auto;gap:8px;padding:10px;top:0}.exam-toolbar .overall-timer{min-width:138px;padding:7px}.exam-toolbar .overall-timer strong{font-size:15px}.exam-tools{grid-column:1/-1;display:grid;grid-template-columns:repeat(3,1fr)}.exam-tools button{padding:8px 4px;font-size:11px;white-space:normal}.exam{display:flex;flex-direction:column;gap:10px}.exam .question-card{order:0;width:100%}.exam .navigator{order:1;position:static;max-height:none;width:100%}.navigator .qgrid{grid-template-columns:repeat(auto-fit,minmax(60px,1fr));max-height:300px}.question-actions button{flex:1;padding:9px 7px;font-size:12px}.question-card{scroll-margin-top:145px}}