/* SmartEd shared styles: used by login, admin, student, quiz and report pages */
:root{
  --bg:#EEEBE3; --ink:#16181D; --ink2:#3A3E49; --muted:#555A66;
  --accent:#3B3FB6; --accent-dark:#2A2D8F; --accent-soft:#E4E5F7;
  --orange:#C2410C; --amber:#E8914A; --green:#1F7A4D; --red:#B42318;
  --card:rgba(255,255,255,0.66); --card-strong:rgba(255,255,255,0.85); --card-border:rgba(255,255,255,0.9);
  --line:rgba(22,24,29,0.09); --track:rgba(22,24,29,0.07); --chip:rgba(22,24,29,0.06);
  --input:#FFFFFF; --shadow:0 10px 30px rgba(22,24,29,0.06);
  --blob1:#C9CBF2; --blob2:#F2D3AE;
  --navActiveBg:#16181D; --navActiveInk:#FFFFFF;
  --darkcard:#16181D; --darkink:#F2F0EA;
}
[data-theme="dark"]{
  --bg:#0F1116; --ink:#ECEAE4; --ink2:#C9CAD2; --muted:#A7A9B4;
  --accent:#8C90F0; --accent-dark:#B8BAF5; --accent-soft:rgba(140,144,240,0.16);
  --orange:#F2A65A; --amber:#F2A65A; --green:#8FD6AE; --red:#F49B92;
  --card:rgba(255,255,255,0.05); --card-strong:rgba(255,255,255,0.07); --card-border:rgba(255,255,255,0.09);
  --line:rgba(255,255,255,0.1); --track:rgba(255,255,255,0.09); --chip:rgba(255,255,255,0.07);
  --input:#191C23; --shadow:none; --blob1:#2A2D8F; --blob2:#7A3A0C;
  --navActiveBg:#ECEAE4; --navActiveInk:#16181D;
  --darkcard:rgba(255,255,255,0.06); --darkink:#F2F0EA;
}
*{box-sizing:border-box}
html,body{min-height:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:'IBM Plex Sans',system-ui,-apple-system,'Segoe UI',sans-serif;font-size:15px;transition:background .2s,color .2s}
h1,h2,h3,h4{font-family:'Bricolage Grotesque','IBM Plex Sans',system-ui,sans-serif;margin:0;letter-spacing:-0.01em}
a{color:var(--accent);text-decoration:none}a:hover{color:var(--accent-dark)}
button,input,select,textarea{font-family:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.mono{font-family:'IBM Plex Mono',ui-monospace,monospace}
.muted{color:var(--muted)}
.up{color:var(--green)!important}.down{color:var(--red)!important}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}

/* ---------- shell ---------- */
.app{min-height:100vh;display:flex;position:relative;overflow-x:hidden}
.blob{position:absolute;border-radius:50%;filter:blur(120px);pointer-events:none;z-index:0}
.blob.a{width:560px;height:560px;right:-120px;top:-240px;background:var(--blob1);opacity:.75}
.blob.b{width:520px;height:520px;left:200px;bottom:-260px;background:var(--blob2);opacity:.6}
aside.side{position:sticky;top:0;height:100vh;width:252px;flex-shrink:0;padding:24px 16px;display:flex;flex-direction:column;gap:24px;background:var(--card);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-right:1px solid var(--card-border);z-index:2;overflow-y:auto}
.logo{display:flex;align-items:center;gap:10px;padding:0 8px}
.logo-mark{width:36px;height:36px;border-radius:10px;background:#3B3FB6;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.logo-mark.black{background:#16181D}
.logo b{display:block;font-family:'Bricolage Grotesque',sans-serif;font-size:19px}
.logo small{font-size:12px;color:var(--muted)}
nav.main{display:flex;flex-direction:column;gap:4px}
.nav{display:flex;align-items:center;gap:12px;min-height:44px;padding:0 12px;border-radius:12px;color:var(--ink2);font-size:14px;font-weight:500;border:0;background:transparent;cursor:pointer;width:100%;text-align:left}
.nav:hover{background:var(--chip);color:var(--ink)}
.nav[aria-current="page"]{background:var(--navActiveBg);color:var(--navActiveInk)}
.nav svg{flex-shrink:0}
.nav .badge{margin-left:auto;padding:2px 8px;border-radius:999px;background:#F6E3CC;color:#8A4A0C;font-size:12px;font-weight:600}
.nav .badge:empty{display:none}
.subnav{display:flex;flex-direction:column;gap:2px;margin:0 0 4px 22px;padding-left:10px;border-left:1px solid var(--line)}
.subnav .nav{min-height:36px;font-size:13px;gap:10px}
.dot{width:9px;height:9px;border-radius:50%;flex-shrink:0;display:inline-block}
.profile{display:flex;align-items:center;gap:12px;padding:12px;border-radius:16px;background:var(--card-strong);border:1px solid var(--card-border)}
.avatar{width:40px;height:40px;flex-shrink:0;border-radius:50%;background:var(--accent-soft);color:var(--accent);display:flex;align-items:center;justify-content:center;font-weight:600;font-size:14px}
.profile .who{display:flex;flex-direction:column;min-width:0;flex-grow:1}
.profile .who b{font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.profile .who span{font-size:12px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
main{position:relative;flex-grow:1;min-width:0;padding:32px;display:flex;flex-direction:column;gap:22px;z-index:1}
.topbar{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.topbar .title{display:flex;flex-direction:column;gap:4px;flex-grow:1;min-width:240px}
.topbar h1{font-size:30px;font-weight:700}
.topbar .sub{font-size:14px;color:var(--muted)}
.view{display:none;flex-direction:column;gap:22px}
.view.on{display:flex}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 18px;border-radius:12px;border:1px solid var(--line);background:var(--card-strong);color:var(--ink);font-size:14px;font-weight:500;cursor:pointer;white-space:nowrap;text-decoration:none}
.btn:hover{border-color:var(--accent);color:var(--ink)}
.btn.primary{background:#3B3FB6;border-color:#3B3FB6;color:#fff;font-weight:600}
.btn.primary:hover{background:#2A2D8F;color:#fff}
.btn.warm{background:#F2A65A;border-color:#F2A65A;color:#1A1206;font-weight:700}
.btn.warm:hover{background:#E8914A;color:#1A1206}
.btn.danger{background:#B42318;border-color:#B42318;color:#fff;font-weight:600}
.btn.danger:hover{background:#8F1D14;color:#fff}
.btn.sm{height:32px;padding:0 12px;border-radius:9px;font-size:13px}
.btn:disabled{opacity:.5;cursor:not-allowed}
.iconbtn{width:44px;height:44px;flex-shrink:0;border-radius:12px;border:1px solid var(--line);background:var(--card-strong);color:var(--ink);display:flex;align-items:center;justify-content:center;cursor:pointer;position:relative}
.iconbtn.sm{width:34px;height:34px;border-radius:10px}
.iconbtn:hover{border-color:var(--accent)}
.points{display:flex;align-items:center;gap:8px;height:44px;padding:0 16px;border-radius:12px;background:var(--card-strong);border:1px solid var(--line);font-size:14px;font-weight:600}

/* ---------- cards ---------- */
.card{padding:24px;border-radius:20px;background:var(--card);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border:1px solid var(--card-border);box-shadow:var(--shadow);display:flex;flex-direction:column;gap:14px;min-width:0}
.card h2{font-size:19px;font-weight:600}
.card.dark{background:var(--darkcard);color:var(--darkink);border-color:transparent}
.card.dark .muted{color:#B9BBC4}
.card.dark a{color:#B8BAF5}
.card.hero{background:#3B3FB6;color:#fff;border-color:#3B3FB6;box-shadow:0 14px 34px rgba(59,63,182,0.28)}
.cardhead{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.cardhead h2{flex-grow:1}
.grid{display:grid;gap:20px}
.g2{grid-template-columns:minmax(0,1.5fr) minmax(0,1fr)}
.g2e{grid-template-columns:repeat(2,minmax(0,1fr))}
.g3{grid-template-columns:minmax(0,1.2fr) minmax(0,1fr) minmax(0,0.85fr)}
.g3e{grid-template-columns:repeat(3,minmax(0,1fr))}
.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
.g5{grid-template-columns:repeat(5,minmax(0,1fr))}
.stat{padding:18px 20px;gap:6px}
.stat .label{font-size:13px;color:var(--muted);font-weight:500}
.stat .value{font-family:'Bricolage Grotesque',sans-serif;font-size:30px;font-weight:700}
.stat .value small{font-size:15px;color:var(--muted);font-weight:500}
.stat .snote{font-size:13px;font-weight:500;color:var(--muted)}
.row{display:flex;align-items:center;gap:12px;padding:12px 14px;border-radius:14px;background:var(--card-strong)}
.num{width:28px;height:28px;flex-shrink:0;border-radius:50%;background:var(--accent-soft);color:var(--accent);font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center}
.num.warm{background:#F6E3CC;color:#8A4A0C}

/* ---------- bars ---------- */
.bar{display:flex;flex-direction:column;gap:6px}
.bar .top{display:flex;gap:8px;font-size:13px}.bar .top span:first-child{flex-grow:1}.bar .top b{font-weight:600}
.track{height:8px;border-radius:4px;background:var(--track);overflow:hidden}
.fill{height:8px;border-radius:4px;background:var(--accent)}

/* ---------- pills / chips ---------- */
.pill{display:inline-flex;align-items:center;gap:6px;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:600;background:var(--chip);color:var(--ink2);white-space:nowrap}
.pill.blue{background:#E4E5F7;color:#2A2D8F}
.pill.green{background:#DCEFE3;color:#1F5E3D}
.pill.red{background:#FBE7E5;color:#7A1A12}
.pill.amber{background:#F6E3CC;color:#8A4A0C}
.pill.black{background:#16181D;color:#fff}
.seg{display:flex;padding:3px;border-radius:10px;background:var(--chip)}
.seg button{height:34px;padding:0 12px;border:0;border-radius:8px;background:transparent;font-size:13px;color:var(--ink2);cursor:pointer}
.seg button[aria-pressed="true"]{background:#fff;font-weight:600;color:#16181D}
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chipbtn{height:34px;padding:0 14px;border-radius:999px;border:1px solid var(--line);background:var(--card-strong);color:var(--ink2);font-size:13px;font-weight:500;cursor:pointer}
.chipbtn:hover{border-color:var(--accent)}
.chipbtn[aria-pressed="true"]{background:var(--navActiveBg);color:var(--navActiveInk);border-color:transparent}

/* ---------- tables ---------- */
.tablewrap{overflow-x:auto}
table.t{width:100%;border-collapse:collapse;min-width:640px}
table.t th{text-align:left;font-weight:600;font-size:12px;letter-spacing:0.04em;color:var(--muted);padding:10px 12px;border-bottom:1px solid var(--line);white-space:nowrap}
table.t td{font-size:14px;padding:12px;border-bottom:1px solid var(--line);vertical-align:middle}
table.t tr:last-child td{border-bottom:0}
table.t td small{display:block;color:var(--muted);font-size:12px}

/* ---------- forms ---------- */
.field{display:flex;flex-direction:column;gap:6px}
.field label,.flabel{font-size:13px;font-weight:600;color:var(--ink2)}
.input,.field input,.field select,.field textarea{width:100%;height:44px;padding:0 14px;border-radius:12px;border:1px solid var(--line);background:var(--input);font-size:15px;color:var(--ink);outline:none}
.field textarea{height:auto;padding:12px 14px;resize:vertical}
.field input:focus,.field select:focus,.input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(59,63,182,0.15)}
.field.invalid input,.field.invalid select{border-color:var(--red)}
.err{font-size:13px;color:var(--red)}
.err:empty{display:none}
.hint{font-size:12.5px;color:var(--muted)}
.search{display:flex;align-items:center;gap:8px;width:260px;max-width:100%;height:40px;padding:0 12px;border-radius:10px;background:var(--input);border:1px solid var(--line);color:var(--muted)}
.search input{border:0;background:transparent;outline:none;font-size:14px;width:100%;color:var(--ink)}
.checks{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.check{display:flex;align-items:center;gap:8px;padding:10px 12px;border-radius:10px;border:1px solid var(--line);font-size:14px;cursor:pointer;background:var(--input)}
.check input{width:16px;height:16px;accent-color:#3B3FB6}

/* ---------- modal ---------- */
.modal-bg{position:fixed;inset:0;background:rgba(15,17,22,0.55);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);display:none;align-items:center;justify-content:center;z-index:60;padding:20px}
.modal-bg.on{display:flex}
.modal{width:100%;max-width:520px;max-height:calc(100vh - 40px);overflow-y:auto;padding:28px;border-radius:24px;background:var(--bg);border:1px solid var(--line);display:flex;flex-direction:column;gap:16px;box-shadow:0 30px 80px rgba(0,0,0,0.25)}
.modal h2{font-size:22px;font-weight:700}
.modal .actions{display:flex;gap:10px;justify-content:flex-end;margin-top:4px}

.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%) translateY(20px);padding:12px 18px;border-radius:12px;background:#16181D;color:#fff;font-size:14px;opacity:0;transition:all .2s;z-index:90;pointer-events:none;max-width:90vw}
.toast.on{opacity:1;transform:translateX(-50%) translateY(0)}
.empty{padding:28px;text-align:center;color:var(--muted);font-size:14px;line-height:1.6}

@media (max-width:1150px){
  .g2,.g3,.g2e{grid-template-columns:1fr}
  .g5{grid-template-columns:repeat(3,minmax(0,1fr))}
  .g4{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:820px){
  .app{flex-direction:column}
  aside.side{position:relative;height:auto;width:100%;flex-direction:row;flex-wrap:wrap;align-items:center;gap:12px;padding:12px;border-right:0;border-bottom:1px solid var(--card-border)}
  nav.main{flex-direction:row;overflow-x:auto;width:100%;order:3}
  .nav{width:auto;white-space:nowrap}
  .subnav{flex-direction:row;margin:0;border:0;padding:0}
  aside .spacer,aside .hide-sm{display:none}
  .profile{margin-left:auto;padding:6px 8px}.profile .who{display:none}
  main{padding:20px 16px}
  .g3e,.g4,.g5,.checks{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}
@media print{
  aside.side,.blob,.noprint{display:none!important}
  body{background:#fff;color:#000}
  .card{box-shadow:none;border:1px solid #ddd;break-inside:avoid}
  main{padding:0}
}