/* Aula360 — estilos base */
:root{
  --bg:#F3F5F2; --surface:#FFFFFF; --surface-2:#F8FAF7; --ink:#17201B; --muted:#5A6660; --line:#DCE2DD;
  --accent:#245C45; --accent-ink:#FFFFFF; --accent-soft:#E2EEE7;
  --ad:#1F4E8C; --ad-bg:#E4ECF7; --a:#2B7A4B; --a-bg:#E3F2E8; --b:#9A610C; --b-bg:#FBEFD9; --c:#AE3528; --c-bg:#FAE3DF;
  --ok:#2B7A4B; --ok-bg:#E3F2E8; --warn:#9A610C; --warn-bg:#FBEFD9; --bad:#AE3528; --bad-bg:#FAE3DF; --info:#1F4E8C; --info-bg:#E4ECF7;
  --shadow:0 1px 2px rgba(20,40,30,.06),0 4px 16px rgba(20,40,30,.05);
  --font:"IBM Plex Sans",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --display:"Bricolage Grotesque",var(--font);
  --mono:"IBM Plex Mono",ui-monospace,Menlo,Consolas,monospace;
  color-scheme:light;
}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg)}
body{color:var(--ink);font:14px/1.5 var(--font)}
h1,h2,h3{font-family:var(--display);margin:0;letter-spacing:-.01em;text-wrap:balance}
h1{font-size:26px;line-height:1.15}
h2{font-size:18px}
h3{font-size:15px}
p{margin:0}
a{color:var(--accent)}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
[hidden]{display:none!important}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
.muted{color:var(--muted)}
.small{font-size:12.5px}
.eyebrow{font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);font-weight:600}

/* Layout */
.app{display:grid;grid-template-columns:240px minmax(0,1fr);min-height:100vh}
.side{background:var(--surface);border-right:1px solid var(--line);padding:18px 14px;display:flex;flex-direction:column;gap:14px;position:sticky;top:0;height:100vh;overflow:auto}
.brand{display:flex;align-items:center;gap:10px;padding:0 6px;text-decoration:none;color:inherit}
.logo{width:34px;height:34px;border-radius:9px;background:var(--accent);color:var(--accent-ink);display:grid;place-items:center;font-family:var(--display);font-weight:700}
.brand b{font-family:var(--display);font-size:17px;display:block;line-height:1.1}
.brand small{color:var(--muted);font-size:11px}
.school{padding:10px;border:1px solid var(--line);border-radius:10px;background:var(--surface-2);display:grid;gap:2px;font-size:12px}
.school b{font-size:13px}
.school-logo{width:44px;height:44px;object-fit:contain;margin-bottom:4px}
nav.menu{display:grid;gap:2px}
.nav-group{display:flex;align-items:center;gap:10px;font-size:10px;text-transform:uppercase;letter-spacing:.12em;color:var(--muted);font-weight:700;padding:14px 4px 6px;opacity:.85}
.nav-group::after{content:"";flex:1;height:1px;background:var(--line)}
.nav-group:first-child{padding-top:2px}
.nav-link{display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:8px;color:var(--muted);text-decoration:none;font-weight:500}
.nav-link:hover{background:var(--surface-2);color:var(--ink)}
.nav-link.active{background:var(--accent-soft);color:var(--accent);font-weight:600}
.nav-link svg{width:17px;height:17px;flex:none;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.side-foot{margin-top:auto;display:grid;gap:8px;font-size:12px;color:var(--muted);padding:0 6px}
.side-foot form{margin:0}
main{padding-block:24px 56px;padding-inline:clamp(16px,3vw,36px);display:grid;gap:18px;align-content:start;min-width:0}
main>*{min-width:0}
.page-head{display:flex;flex-wrap:wrap;gap:12px 24px;align-items:flex-end;justify-content:space-between}
.page-head p{color:var(--muted);margin-top:4px;max-width:70ch}

/* Componentes */
.card{background:var(--surface);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow)}
.card-pad{padding:18px}
.stack{display:grid;gap:14px}
.stack>*{min-width:0}
.row{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.between{justify-content:space-between}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.grid-side{display:grid;grid-template-columns:minmax(0,1.7fr) minmax(0,1fr);gap:16px;align-items:start}
.grid-side>*{min-width:0}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.kpis{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.kpi{padding:16px;display:grid;gap:6px}
.kpi .v{font-family:var(--display);font-size:28px;font-weight:700;line-height:1;font-variant-numeric:tabular-nums}
.bar{height:6px;border-radius:99px;background:var(--surface-2);border:1px solid var(--line);overflow:hidden}
.bar i{display:block;height:100%;background:var(--accent)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:9px 14px;border-radius:8px;border:1px solid var(--line);background:var(--surface);cursor:pointer;font-weight:600;font-size:13.5px;text-decoration:none;color:var(--ink)}
.btn:hover{background:var(--surface-2)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.btn.primary:hover{filter:brightness(1.08)}
.btn.danger{color:var(--bad);border-color:var(--bad-bg)}
.btn.sm{padding:5px 10px;font-size:12.5px}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.5;cursor:not-allowed;pointer-events:none}
.linkbtn{border:0;background:none;color:var(--accent);font-weight:600;cursor:pointer;padding:0}
.field{display:grid;gap:4px;align-content:start}
.field label,.label{font-size:11.5px;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.05em}
.field input,.field select,.field textarea,.input{padding:8px 10px;border-radius:8px;border:1px solid var(--line);background:var(--surface);min-width:0;width:100%}
.field label.check{text-transform:none;font-size:13.5px;font-weight:400;color:var(--ink);letter-spacing:0;align-items:flex-start}
.field input[type=checkbox],.field input[type=radio],.check input{width:auto;flex:none;margin-top:3px}
.field .hint{font-size:12px;color:var(--muted)}
.filters{display:flex;flex-wrap:wrap;gap:12px;align-items:flex-end}
.filters .field{min-width:160px}
.form-grid{align-items:start;display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px}
.check{display:flex;gap:8px;align-items:center;font-size:13.5px}
.pill{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;padding:3px 9px;border-radius:99px;white-space:nowrap}
.pill::before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor}
.pill.ok{background:var(--ok-bg);color:var(--ok)} .pill.warn{background:var(--warn-bg);color:var(--warn)} .pill.bad{background:var(--bad-bg);color:var(--bad)} .pill.info{background:var(--info-bg);color:var(--info)} .pill.muted{background:var(--surface-2);color:var(--muted)}
.tag{font-size:10.5px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;padding:2px 6px;border-radius:5px;background:var(--surface-2);border:1px solid var(--line);color:var(--muted)}
.msg{padding:10px 14px;border-radius:10px;font-size:13.5px}
.msg.ok{background:var(--ok-bg);color:var(--ok)} .msg.error,.msg.bad{background:var(--bad-bg);color:var(--bad)} .msg.warn{background:var(--warn-bg);color:var(--warn)} .msg.info{background:var(--info-bg);color:var(--info)}
.scroll{overflow-x:auto}
table{border-collapse:separate;border-spacing:0;width:100%}
th,td{padding:9px 12px;text-align:left;border-bottom:1px solid var(--line);vertical-align:middle}
thead th{font-size:11.5px;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);font-weight:600;background:var(--surface-2)}
tbody tr:last-child td{border-bottom:0}
td.num,th.num{text-align:right;font-variant-numeric:tabular-nums}
.empty{padding:28px;text-align:center;color:var(--muted)}
.chip{display:inline-block;min-width:34px;text-align:center;font-family:var(--mono);font-size:12px;font-weight:500;padding:2px 6px;border-radius:6px;white-space:nowrap}
.chip.AD{background:var(--ad-bg);color:var(--ad)} .chip.A{background:var(--a-bg);color:var(--a)} .chip.B{background:var(--b-bg);color:var(--b)} .chip.C{background:var(--c-bg);color:var(--c)} .chip.none{background:var(--surface-2);color:var(--muted)}
.legend{display:flex;flex-wrap:wrap;gap:8px 16px;font-size:12.5px;color:var(--muted);align-items:center}
.checks{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.checks li{display:flex;gap:10px;align-items:flex-start}
.ico{flex:none;width:20px;height:20px;border-radius:50%;display:grid;place-items:center;font-size:12px;font-weight:700}
.ico.ok{background:var(--ok-bg);color:var(--ok)} .ico.bad{background:var(--bad-bg);color:var(--bad)} .ico.warn{background:var(--warn-bg);color:var(--warn)}
details.box{border:1px solid var(--line);border-radius:10px;background:var(--surface)}
details.box>summary{cursor:pointer;padding:12px 16px;font-weight:600;list-style:none;display:flex;justify-content:space-between;gap:10px}
details.box>summary::-webkit-details-marker{display:none}
details.box>summary::after{content:"+";color:var(--muted);font-family:var(--mono)}
details.box[open]>summary::after{content:"–"}
details.box>.inner{padding:0 16px 16px}

/* Registro de notas */
.grid-wrap{overflow:auto;max-height:72vh;border-radius:12px}
table.grid th,table.grid td{border-right:1px solid var(--line)}
table.grid th:last-child,table.grid td:last-child{border-right:0}
table.grid thead th{position:sticky;top:0;z-index:2;vertical-align:bottom}
table.grid .stu{position:sticky;left:0;background:var(--surface);z-index:1;min-width:240px}
table.grid thead .stu{z-index:3;background:var(--surface-2)}
table.grid .comp-h{min-width:118px;max-width:160px;text-transform:none;letter-spacing:0;font-size:11.5px;line-height:1.3;font-weight:500}
table.grid .comp-h b{display:block;font-family:var(--mono);font-size:11px;color:var(--accent);margin-bottom:2px}
table.grid td.lv{padding:6px;text-align:center}
.lvl{appearance:none;-webkit-appearance:none;width:64px;padding:6px 4px;text-align:center;text-align-last:center;border-radius:7px;border:1px dashed var(--line);background:var(--surface);font-family:var(--mono);font-weight:500;cursor:pointer}
.lvl.AD{background:var(--ad-bg);color:var(--ad);border:1px solid transparent}
.lvl.A{background:var(--a-bg);color:var(--a);border:1px solid transparent}
.lvl.B{background:var(--b-bg);color:var(--b);border:1px solid transparent}
.lvl.C{background:var(--c-bg);color:var(--c);border:1px solid transparent}
.lvl.saving{opacity:.6}
.cnt{width:44px;padding:6px 4px;text-align:center;border-radius:7px;border:1px solid var(--line);background:var(--surface);font-family:var(--mono)}
.cnt.saving{opacity:.6}.cnt.error{outline:2px solid var(--bad)}
.grid.tut th.num-h{font-size:11px;white-space:normal;min-width:56px;text-align:center}
.tut-legend{display:grid;gap:4px;color:var(--muted)}
.nota-cell{display:inline-flex;align-items:center;gap:5px}
.nota{width:42px;padding:6px 4px;text-align:center;border-radius:7px;border:1px solid var(--line);background:var(--surface);font-family:var(--mono);font-weight:500}
.nota:focus{border-color:var(--accent)}
.nota.saving{opacity:.6}
.nota.error{outline:2px solid var(--bad)}
.lvl.error{outline:2px solid var(--bad)}
.concl{min-width:300px}
.concl textarea{width:100%;min-height:56px;resize:vertical;border:1px solid var(--line);border-radius:8px;padding:7px 9px;background:var(--surface-2);font-size:12.5px;line-height:1.45}
.save-state{font-size:12px;color:var(--muted)}
.toast{position:fixed;left:50%;bottom:20px;transform:translateX(-50%);background:var(--ink);color:#fff;padding:10px 16px;border-radius:10px;font-weight:500;font-size:13px;z-index:50;max-width:calc(100% - 32px)}

/* Auth / instalación */
.center-wrap{min-height:100vh;display:grid;place-items:center;padding:24px 16px}
.auth-card{width:100%;max-width:420px}
.install-card{width:100%;max-width:760px}

/* Libretas (impresión) */
.libreta{background:#fff;color:#111;max-width:900px;margin:0 auto;padding:28px;border:1px solid var(--line);border-radius:12px;page-break-after:always;break-after:page}
.libreta:last-child{page-break-after:auto;break-after:auto}
.lib-head{display:flex;justify-content:space-between;gap:16px;border-bottom:2px solid #111;padding-bottom:12px;margin-bottom:14px}
.lib-head h2{font-size:18px}
.lib-id{display:flex;gap:14px;align-items:flex-start}
.lib-logo{width:64px;height:64px;object-fit:contain;flex:none}
.lib-pie{margin-top:14px;color:#333}
.logo-box{display:grid;place-items:center;height:110px;border:1px dashed var(--line);border-radius:12px;background:var(--bg)}
.logo-box img{max-height:92px;max-width:90%;object-fit:contain}
.logo img{width:100%;height:100%;object-fit:contain;border-radius:inherit;background:#fff}
.lib-meta{display:grid;grid-template-columns:auto 1fr auto 1fr;gap:3px 12px;font-size:12.5px;margin-top:8px}
.lib-meta span{color:#555}
table.lib{font-size:12px}
table.lib th,table.lib td{border:1px solid #bbb;padding:5px 7px}
table.lib thead th{background:#f1f3f1;color:#333;text-align:center}
table.lib td.area{font-weight:700;background:#f7f8f7;vertical-align:middle}
table.lib td.lv{text-align:center;width:62px}
table.lib tr.concl td{font-size:11.5px;font-style:italic;color:#444}
.firmas{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,260px));justify-content:space-around;gap:60px;margin-top:48px;font-size:12px;text-align:center}
.firmas div{border-top:1px solid #333;padding-top:6px}

/* ---------- Libreta detallada (A4, una página por estudiante) ---------- */
.boleta{--bn:#1f3f7a;--ba:#4472c4;--bl:#a9c4ef;background:#fff;color:#111;width:194mm;margin:0 auto;padding:6mm 0;font-family:Arial,"Helvetica Neue",var(--font);font-size:7.2pt;line-height:1.15;page-break-after:always;break-after:page;-webkit-print-color-adjust:exact;print-color-adjust:exact}
.pages .boleta{padding:8mm;width:calc(194mm + 16mm);box-shadow:0 1px 6px rgba(0,0,0,.12)}
.b-head{display:flex;align-items:center;justify-content:center;gap:16px;margin-bottom:3mm}
.b-logo{height:20mm;width:auto;max-width:40mm;object-fit:contain}
.b-nombre{display:grid;gap:3px;justify-items:center}
.b-tipo{background:var(--ba);color:#fff;font-style:italic;font-weight:700;font-size:10pt;padding:3px 18px;border-radius:4px}
.b-col{background:#c0181f;color:#fff;font-family:Georgia,"Times New Roman",serif;font-weight:700;font-size:17pt;letter-spacing:.04em;padding:5px 26px;border-radius:5px;border:2px solid #8e0d12}
.b-titulo{font-family:Arial,var(--font);font-size:10.5pt;text-align:center;letter-spacing:.06em;margin:0 0 2.6mm}
.boleta table{width:calc(100% - 1px);border-collapse:collapse;table-layout:fixed}
.boleta td,.boleta th{border:.6pt solid #222;padding:1px 2.5px;vertical-align:middle}
.b-datos{margin-bottom:2.2mm}
.b-datos th{background:var(--bn);color:#fff;font-weight:700;text-align:center}
.b-datos td{text-align:center}
.b-datos col.dl{width:12%} .b-datos col.dv{width:30%} .b-datos col.sl{width:10%} .b-datos col.sv{width:10%} .b-datos col.tl{width:10%} .b-datos col.tv{width:28%}
.b-notas col.c-area{width:11%} .b-notas col.c-cur{width:8.5%} .b-notas col.c-comp{width:auto} .b-notas col.c-n{width:3.3%} .b-notas col.c-l{width:3.3%}
.b-notas thead th{background:var(--ba);color:#fff;font-weight:700;text-align:center;font-size:7pt}
.b-notas thead th.per{background:var(--bl);color:#111;font-size:6.2pt;line-height:1.1}
.b-notas th.area{background:var(--ba);color:#fff;font-weight:700;text-align:center;font-size:6.8pt;word-break:normal;overflow-wrap:anywhere}
.b-notas th.cur,.b-notas th.sub{background:var(--bl);color:#111;font-weight:700;font-size:6.6pt;text-align:left}
.b-notas th.sub{text-align:center;background:#fff;font-size:5.6pt}
.b-notas td.n.prom{font-size:6pt;padding:1px 0;letter-spacing:-.02em}
.b-notas td.comp{font-size:6.6pt;line-height:1.1}
.b-notas td.n{text-align:center;font-weight:700}
.b-notas td.l{text-align:center;font-weight:700;font-size:7pt}
.b-notas td.l.AD,.b-notas td.nivlab.AD{background:#00b050;color:#111}
.b-notas td.l.A,.b-notas td.nivlab.A{background:#ffff00;color:#111}
.b-notas td.l.B,.b-notas td.nivlab.B{background:#ffc000;color:#111}
.b-notas td.l.C,.b-notas td.nivlab.C{background:#ff0000;color:#fff}
.b-notas td.rlab{text-align:right;font-weight:700}
.b-notas td.nivlab{font-weight:700;display:table-cell}
.b-notas td.nivlab span:first-child{display:inline-block;min-width:58%}
.b-notas tr.sep td{border:0;height:1.8mm;padding:0}
.b-rec{border:.6pt solid #222;margin-top:1.8mm}
.b-rec-h{background:var(--bn);color:#fff;font-weight:700;text-align:center;padding:2px}
.b-rec-t{padding:3px 6px;min-height:7mm;font-weight:700}
.b-pie{text-align:center;margin-top:2mm;font-style:italic}
.b-firmas{display:flex;justify-content:space-around;margin-top:10mm;font-weight:700;text-align:center}
.b-firmas div{border-top:.8pt solid #222;padding-top:3px;min-width:55mm}
.b-firmas span{font-weight:400}
@media print{
  @page{size:A4;margin:12mm}
  body{background:#fff}
  .app{display:block}
  .side,.no-print,.page-head,.toast{display:none!important}
  main{padding:0}
  .libreta{border:0;border-radius:0;padding:0;max-width:none}
  .pages:has(.boleta){padding:0;gap:0}
  body{background:#fff!important}
  .pages .boleta,.boleta{box-shadow:none;padding:0!important;width:100%!important;margin:0}
}
@page boleta{size:A4;margin:8mm}
.boleta{page:boleta}

@media (max-width:1000px){
  .kpis{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-2,.grid-3,.grid-side{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:760px){
  .app{grid-template-columns:minmax(0,1fr)}
  .side{position:static;height:auto;border-right:0;border-bottom:1px solid var(--line);padding:12px 16px;gap:10px}
  .school,.nav-group{display:none}
  nav.menu{display:flex;overflow-x:auto;gap:4px}
  .nav-link{white-space:nowrap}
  .side-foot{flex-direction:row;display:flex;justify-content:space-between;align-items:center}
  table.grid .stu{min-width:170px}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}