:root{--navy:#102b46;--blue:#2366c9;--muted:#64748b;--border:#dce4ee;--bg:#f3f6fa;--red:#b42332}*{box-sizing:border-box}body{margin:0;font:15px/1.5 system-ui,-apple-system,"Segoe UI",sans-serif;color:#23364c;background:var(--bg)}a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}button,.button{display:inline-flex;align-items:center;justify-content:center;border:1px solid transparent;background:var(--blue);color:#fff;border-radius:8px;padding:10px 16px;font-family:inherit;font-size:14px;font-weight:600;line-height:1.3;cursor:pointer;text-decoration:none;gap:8px;min-height:42px}button:hover,.button:hover{filter:brightness(.95);text-decoration:none}.secondary{background:white;border-color:var(--border);color:var(--navy)}.danger{background:#fff3f3;border-color:#efc6cc;color:var(--red)}.link{background:transparent;padding:0;color:#a9c2db;min-height:32px}.sidebar{position:fixed;inset:0 auto 0 0;width:238px;background:var(--navy);color:#fff;padding:28px 18px;display:flex;flex-direction:column;z-index:30;overflow-y:auto}.brand{display:flex;gap:13px;align-items:center;color:#fff;font-size:20px;font-weight:750;line-height:1.1;margin-bottom:34px;padding:0 10px}.brand small{font-size:16px;font-weight:500}.brand-icon{width:52px;height:52px;flex:0 0 52px;border-radius:12px;background:#397fca;display:grid;place-items:center}.brand-icon svg{width:31px;height:31px;fill:none;stroke:#fff;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.nav-label{font-size:10px;letter-spacing:1.5px;color:#9ab1c8;margin:0 12px 12px}.sidebar nav{display:grid;gap:5px}.sidebar nav a{display:flex;gap:12px;align-items:center;color:#b6cada;padding:12px;border-radius:8px;font-size:14px}.sidebar nav a span{font-size:21px;width:24px;text-align:center}.sidebar nav a.active,.sidebar nav a:hover{background:#244968;color:#fff;text-decoration:none}.sidebar-bottom{margin-top:auto;padding:20px 10px 0;border-top:1px solid #31506b}.sidebar-bottom strong{font-size:13px}.workspace{margin-left:238px}.topbar{height:74px;background:#fff;border-bottom:1px solid var(--border);padding:0 36px;display:flex;align-items:center;justify-content:space-between;color:var(--muted);font-size:13px}.badge{font-size:10px;letter-spacing:1px;color:#55718d;background:#eaf1f8;padding:6px 10px;border-radius:6px;font-weight:650}main{padding:32px 36px;max-width:1800px;margin:auto}h1{margin:0;font-size:29px;line-height:1.3;color:var(--navy);letter-spacing:-.7px}h2{font-size:18px;color:var(--navy);margin:0 0 12px}h3{font-size:16px}.eyebrow{font-size:10px;letter-spacing:1.8px;font-weight:700;color:var(--muted);margin:0 0 8px}.page-heading{display:flex;justify-content:space-between;align-items:flex-end;gap:15px;margin-bottom:26px}.muted,p{color:var(--muted)}p{margin:8px 0 18px}.muted{font-size:12px}.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-bottom:24px}.metric{background:#fff;border:1px solid var(--border);border-radius:12px;padding:21px}.metric span{display:block;color:var(--muted);font-size:13px}.metric strong{font-size:34px;color:var(--navy);display:block;margin:8px 0}.metric small{font-size:11px;color:var(--muted)}.panel{background:#fff;border:1px solid var(--border);border-radius:12px;padding:24px;margin-bottom:22px;box-shadow:0 2px 5px #102b4603}.section-heading{display:flex;justify-content:space-between;align-items:flex-start;gap:18px}.toolbar,.filter-bar,.inline-form,.grade-toolbar{display:flex;align-items:flex-end;gap:12px;flex-wrap:wrap}.filter-bar{margin-bottom:20px}.filter-bar label{min-width:230px}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:16px}.form-actions{align-self:end}label{display:block;font-size:12px;font-weight:650;color:#456078;margin-bottom:14px}input,select,textarea{display:block;width:100%;margin-top:6px;background:#fff;border:1px solid #cbd7e5;border-radius:7px;padding:10px 11px;font:inherit;font-weight:400;color:#203951;min-height:42px}input:focus,select:focus,textarea:focus{outline:3px solid #b8d5ff;border-color:var(--blue)}textarea{resize:vertical}.check{display:flex;gap:8px;align-items:center;align-self:center}.check input{width:17px;min-height:17px;margin:0}.inline-form label{margin:0;min-width:150px}.inline-form .form-actions{align-self:flex-end}.list-row{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:16px 0;border-bottom:1px solid #edf1f5}.list-row:last-child{border-bottom:0}small{display:block;font-size:11px;color:var(--muted);font-weight:400}time{color:var(--muted);font-size:11px}.table-scroll{overflow:auto;border:1px solid var(--border);border-radius:9px;width:100%;overscroll-behavior-x:contain}table{border-collapse:separate;border-spacing:0;width:100%;text-align:left;font-size:13px}th,td{padding:13px 14px;border-bottom:1px solid var(--border);border-right:1px solid #edf1f6;white-space:nowrap}thead th{background:#f0f5fb;color:#375674;font-size:12px;font-weight:650}tbody tr:nth-child(even) td,tbody tr:nth-child(even) th{background:#fbfcfe}tfoot td,tfoot th{background:#eaf2fc;color:var(--navy);font-weight:700;border-bottom:0}.tabs{display:flex;gap:8px;flex-wrap:wrap;margin:0 0 20px}.tabs a{padding:10px 16px;border:1px solid var(--border);background:white;color:var(--muted);border-radius:8px}.tabs .selected{background:var(--navy);color:white;border-color:var(--navy)}details summary{cursor:pointer;font-size:15px;font-weight:650;color:var(--navy)}details[open] summary{margin-bottom:20px}.assessment-editor{padding:18px 0;border-bottom:1px solid var(--border);margin-bottom:18px}.assessment-editor .grid{grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}.assessment-editor .confirm-form{margin-top:10px}.grade-toolbar{justify-content:space-between;margin-bottom:12px}.grade-toolbar label{min-width:260px;margin:0}.grade-scroll{max-height:65vh}.grade-scroll thead th{position:sticky;top:0;z-index:5;min-width:150px}.grade-scroll .student{position:sticky;left:0;min-width:220px;max-width:260px;white-space:normal;background:#fff;z-index:4}.grade-scroll thead .student{z-index:8;background:#f0f5fb}.grade-scroll tfoot .student{background:#eaf2fc}.grade-scroll tfoot td,.grade-scroll tfoot th{position:sticky;bottom:0;z-index:6}.grade-scroll tfoot .student{z-index:7}.grade-scroll td{padding:5px}.grade-input{min-width:115px;width:100%;border:1px solid transparent;background:transparent;text-align:center;margin:0;padding:10px 6px}.grade-input:hover{border-color:#c5d5e6}.grade-input:focus{background:#fff}.low{color:var(--red)!important;background:#fff0f1!important}.result{font-weight:750}.student-average{text-align:center!important}.provisional{font-size:9px;color:#92630e}.saving{background:#fff8df!important}.save-error,.invalid{border:2px solid var(--red)!important;background:#fff0f1!important}.unsaved{color:#92630e}.alert{padding:14px 16px;border-radius:8px;margin-bottom:20px;font-size:13px}.success{background:#e7f5ed;color:#20613e;border:1px solid #c9e7d6}.error{background:#fff0f1;color:var(--red);border:1px solid #edc6cb}.empty{text-align:center;color:var(--muted);padding:32px;background:#f8fafc;border:1px dashed #d1dce8;border-radius:8px;margin-bottom:20px}.welcome{background:linear-gradient(120deg,#fff,#edf5ff)}footer{padding:0 36px 24px;color:#7b8ea3;font-size:11px}.auth{min-height:100vh;display:grid;place-items:center;background:linear-gradient(135deg,#eaf0f8,#f8fafc);padding:24px}.auth-card{width:100%;max-width:440px;background:#fff;border-radius:18px;border:1px solid var(--border);padding:36px;box-shadow:0 12px 50px #102b4610}.auth-card.wide{max-width:760px}.auth-card h1{margin:20px 0 12px}.auth-card h2{margin-top:25px}.auth-card form>button{margin-top:8px}.menu-toggle{display:none}[hidden]{display:none!important}
@media(max-width:1100px){.cards{grid-template-columns:repeat(2,1fr)}.page-heading>.muted{display:none}main{padding:24px}.sidebar{width:212px}.workspace{margin-left:212px}.panel{padding:20px}}
@media(max-width:760px){.sidebar{transform:translateX(-100%);transition:transform .2s}.nav-open .sidebar{transform:translateX(0);box-shadow:0 0 0 100vw #102b4650}.workspace{margin-left:0}.menu-toggle{display:inline-flex;z-index:40}.topbar{padding:0 18px}.topbar .badge{display:none}main{padding:20px 14px}h1{font-size:25px}.cards{gap:10px}.metric{padding:15px}.metric strong{font-size:29px}.panel{padding:16px}.section-heading{flex-direction:column}.list-row{align-items:flex-start;flex-wrap:wrap}.toolbar{gap:8px}.grid{grid-template-columns:1fr}.grade-scroll .student{min-width:160px;max-width:180px}.filter-bar label{width:100%;min-width:0}.filter-bar{gap:8px}.auth-card{padding:25px}}
@media print{@page{size:landscape;margin:10mm}body{background:#fff;font-size:10px}.sidebar,.topbar,footer,.filter-bar,.tabs,.new-section,details,.toolbar,.grade-toolbar,.grade-panel>.muted,.page-heading,.alert{display:none!important}.workspace{margin:0}main,.panel{padding:0;margin:0;max-width:none;border:0;box-shadow:none}.table-scroll{max-height:none;overflow:visible;border:0;border-radius:0}table{font-size:9px;width:100%}th,td{white-space:normal;padding:4px!important}.grade-scroll th,.grade-scroll .student{position:static!important;min-width:0!important;max-width:none}.grade-scroll thead th{min-width:0}.grade-input{min-width:0;border:0;font-size:10px;padding:2px;width:100%;min-height:0;outline:0}thead{display:table-header-group}tr{break-inside:avoid}.section-heading h2{font-size:16px}.section-heading p{font-size:10px}[hidden]{display:table-row!important}}