:root{--blue:#154b83;--blue2:#2875b5;--teal:#15a697;--ink:#1a2b43;--muted:#66768d;--line:#dce6ef;--bg:#f4f7fc;--white:#fff;--red:#bb4350;--green:#167854}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);font-family:Inter,ui-sans-serif,system-ui,-apple-system,'Segoe UI',Arial,sans-serif;color:var(--ink);font-size:14px;line-height:1.5}button,input,textarea,select{font:inherit}button{cursor:pointer}button:disabled{opacity:.5;cursor:not-allowed}input,textarea,select{background:#fff;border:1px solid #cbd9e7;border-radius:9px;padding:11px 12px;width:100%;outline-color:#237bb6;color:#152638}input[type=number]{min-width:0}textarea{min-height:88px;resize:vertical}label{font-weight:650;font-size:12px;display:flex;flex-direction:column;gap:6px;color:#304963}a{color:var(--blue2)}.loader{margin:20vh auto;text-align:center;font-weight:700}.shell{display:flex;min-height:100vh}.aside{width:240px;background:#113a65;color:white;position:sticky;top:0;height:100vh;padding:25px 14px;display:flex;flex-direction:column}.brand{display:flex;gap:10px;align-items:center;padding:0 12px 27px;font-size:20px;letter-spacing:-.7px;font-weight:850}.brand-icon{width:36px;height:36px;border-radius:11px;background:#20aeb2;display:grid;place-items:center;color:white;font-size:21px}.brand small{display:block;color:#a9d3eb;font-size:10px;letter-spacing:.5px;margin-top:-2px}.nav{display:grid;gap:6px}.nav button{display:flex;align-items:center;text-align:left;gap:10px;background:transparent;border:0;color:#c6ddec;padding:12px 14px;border-radius:10px;font-weight:650}.nav button:hover,.nav button.active{background:#265886;color:white}.nav button span{font-size:18px}.aside-foot{margin-top:auto;padding:16px 12px;border-top:1px solid #326089;color:#b9cedd;font-size:11px}.main{flex:1;min-width:0}.topbar{height:72px;background:white;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 34px;gap:15px}.topbar h1{font-size:20px;margin:0;letter-spacing:-.4px}.topbar p{margin:2px 0 0;color:var(--muted);font-size:12px}.account{display:flex;gap:8px;align-items:center;font-weight:650;font-size:12px}.avatar{background:#e4eef9;color:#1c629c;border-radius:99px;padding:9px 12px}.content{max-width:1200px;margin:auto;padding:32px}.hero{border-radius:18px;background:linear-gradient(115deg,#114b84 0%,#1a74a8 66%,#2f9da7 100%);color:white;padding:35px;position:relative;overflow:hidden}.hero:after{content:'✦';position:absolute;right:55px;top:-35px;font-size:210px;opacity:.11}.hero h2{margin:0 0 9px;font-size:29px;letter-spacing:-.9px}.hero p{max-width:670px;color:#d9f3ff;margin:0 0 22px;font-size:14px}.btn{border:1px solid transparent;border-radius:10px;padding:10px 16px;font-weight:730;background:#eaf2f9;color:var(--blue);min-height:39px;white-space:nowrap}.btn:hover{filter:brightness(.975)}.btn.primary{background:#1f6fa9;color:white}.btn.white{background:white;color:#16558b}.btn.outline{border:1px solid #cbdceb;background:white}.btn.danger{background:#fff3f4;border-color:#f2cdd1;color:#b12f44}.btn.small{padding:6px 10px;font-size:12px;min-height:31px}.btnbar{display:flex;gap:9px;flex-wrap:wrap;align-items:center}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.panel{border:1px solid var(--line);background:white;border-radius:15px;padding:23px;box-shadow:0 7px 25px rgba(23,60,92,.035)}.panel h3{font-size:16px;margin:0 0 13px}.panel p{margin:0 0 12px}.muted{color:var(--muted)}.section{margin-top:22px}.stat{display:flex;align-items:center;gap:12px}.stat-icon{width:45px;height:45px;background:#e8f1f9;border-radius:12px;display:grid;place-items:center;font-size:24px}.stat strong{display:block;font-size:22px;line-height:1.3}.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.step{padding:16px;background:#fff;border:1px solid var(--line);border-radius:12px}.step .number{display:grid;place-items:center;width:28px;height:28px;border-radius:9px;color:white;background:#247bac;font-weight:800;margin-bottom:10px}.step strong{display:block}.step p{margin:5px 0 0;color:var(--muted);font-size:12px}.fieldgrid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:15px}.fieldgrid.twocol{grid-template-columns:repeat(2,minmax(0,1fr))}.full{grid-column:1/-1}.hint{background:#eaf4fb;border:1px solid #d1e5f5;color:#235c85;border-radius:10px;padding:11px 14px;font-size:12px;margin:14px 0}.warn{background:#fff6e4;border:1px solid #f6daa5;color:#8d6220;border-radius:10px;padding:11px 14px;margin:13px 0;font-size:12px}.ok{background:#e9f8f0;color:#146d48;border:1px solid #c4e7d4;padding:11px 14px;border-radius:10px;margin:13px 0;font-size:12px}.pill{display:inline-block;padding:4px 10px;background:#e6f2fa;border-radius:30px;color:#255f85;font-size:11px;font-weight:780}.pill.pending{background:#fff0d2;color:#916514}.pill.approved{background:#e5f5ed;color:#186742}.pill.blocked,.pill.rejected{background:#fce8ec;color:#a73f4b}.tablewrap{width:100%;overflow-x:auto}table{border-collapse:collapse;width:100%;min-width:600px}th,td{border-bottom:1px solid #e5ecf3;text-align:left;padding:12px 10px;vertical-align:top;font-size:12px}th{background:#f4f8fc;color:#52708d;font-weight:780}tr:hover td{background:#fcfdff}.question{border:1px solid var(--line);border-radius:12px;margin:12px 0;padding:18px;background:white}.question strong{font-size:13px}.qmeta{display:flex;justify-content:space-between;gap:10px;margin-bottom:9px}.qmeta small{color:var(--muted)}.options{padding:0 0 0 18px;color:#374960;list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:5px}.question textarea{min-height:61px}.question-grid{display:grid;grid-template-columns:minmax(0,1fr) 150px;gap:10px}.auth-wrap{min-height:100vh;display:grid;place-items:center;padding:20px;background:radial-gradient(circle at 15% 20%,#ddefff,transparent 35%),radial-gradient(circle at 90% 80%,#d0eee8,transparent 40%),#f3f7fc}.auth-card{width:100%;max-width:450px;border:1px solid var(--line);border-radius:19px;background:#fff;padding:32px;box-shadow:0 16px 55px rgba(12,64,107,.1)}.auth-card h1{margin:6px 0;font-size:23px}.auth-card .subtitle{color:var(--muted);font-size:13px}.auth-card label{margin:14px 0}.auth-tabs{display:flex;gap:6px;padding:4px;background:#edf3f8;border-radius:10px;margin:20px 0}.auth-tabs button{flex:1;border:0;border-radius:7px;padding:9px;background:transparent;font-weight:750;color:#63829a}.auth-tabs button.active{background:white;color:#165985;box-shadow:0 2px 5px #0001}.empty{text-align:center;padding:28px;background:white;border:1px dashed #c8d6e4;border-radius:13px;color:var(--muted)}.rule-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}.tag{font-size:11px;color:#4b7090;background:#edf4fa;border-radius:8px;padding:4px 7px}.separator{border:0;border-top:1px solid #e4ebf2;margin:18px 0}.footer-note{color:#90a0b2;font-size:11px;margin-top:30px}.toolbar{display:flex;gap:10px;align-items:center;justify-content:space-between;flex-wrap:wrap}.inlineinput{width:70px;padding:7px}.red{color:var(--red)}.nowrap{white-space:nowrap}.hide{display:none!important}@media(max-width:980px){.aside{width:68px;padding:23px 6px}.brand{justify-content:center;padding:0 0 25px}.brand-text,.nav button strong,.aside-foot{display:none}.nav button{justify-content:center}.content{padding:22px}.fieldgrid{grid-template-columns:repeat(2,1fr)}.steps{grid-template-columns:repeat(2,1fr)}}@media(max-width:650px){.aside{position:fixed;top:auto;bottom:0;width:100%;height:60px;flex-direction:row;z-index:10;padding:4px}.brand,.aside-foot{display:none}.nav{display:flex;justify-content:space-around;width:100%}.nav button{padding:8px 13px}.main{padding-bottom:65px}.topbar{padding:12px 15px;height:auto}.topbar h1{font-size:16px}.content{padding:14px}.grid,.grid.two,.fieldgrid,.fieldgrid.twocol,.rule-grid{grid-template-columns:1fr}.steps{grid-template-columns:1fr 1fr}.hero{padding:25px}.hero h2{font-size:23px}.question-grid{grid-template-columns:1fr}.options{grid-template-columns:1fr}.auth-card{padding:23px}}

/* Import/editor and self-study, responsive for teacher phones. */
.study-answers{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin:12px 0}.study-choice{display:flex;gap:8px;align-items:center;border:1px solid #d7e2ee;background:#f9fbfe;padding:9px 11px;border-radius:10px}.study-choice input[type=radio]{width:auto}.study-choice select{margin-left:auto;max-width:110px}.question textarea{min-height:62px}.question .btnbar{margin-top:10px}.nav button{min-width:0}.nav button .nav-icon{font-size:18px}@media(max-width:650px){.nav{overflow-x:auto;justify-content:flex-start;scrollbar-width:thin;gap:5px}.nav button{flex:0 0 54px}.study-answers{grid-template-columns:1fr}.panel{padding:15px}.study-choice{flex-wrap:wrap}}

/* Simple visible import interaction for desktop, tablet and mobile. */
.upload-drop-zone{border:2px dashed #82b9d9;background:#f1f9ff;color:#174e78;border-radius:13px;padding:20px;text-align:center;margin:12px 0;display:flex;flex-direction:column;gap:7px;min-height:95px;justify-content:center;transition:background .14s,border-color .14s;}
.upload-drop-zone strong{font-size:14px}.upload-drop-zone span{font-size:12px;overflow-wrap:anywhere}.upload-drop-zone.dragover{border-color:#128f9e;background:#daf6f5}
input[type=file]{cursor:pointer;min-width:0;max-width:100%;padding:10px;background:#fff}
@media(max-width:650px){.upload-drop-zone{padding:14px 9px;min-height:85px}}