/* Layout: sticky header + tab rail; each view is a stack of panels: summary tiles, then working tables */
:root{
  --bg:#f2f6f7; --surface:#ffffff; --surface-2:#e8f0f1; --line:#d3dfe1; --fg:#061f25; --muted:#53686d;
  --accent:#0b4a55; --accent-ink:#ffffff; --accent-soft:#dcecee; --brand-2:#75b3bb;
  --good:#1f7a3f; --good-soft:#dcf0e2; --warn:#a15c00; --warn-soft:#fbecd3; --bad:#b3261e; --bad-soft:#f8dedc;
  --display:"Bricolage Grotesque", "Segoe UI", system-ui, sans-serif;
  --body:"IBM Plex Sans", "Segoe UI", system-ui, sans-serif;
  --mono:"IBM Plex Mono", ui-monospace, Menlo, monospace;
  --r:8px;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --bg:#0f1719; --surface:#162125; --surface-2:#1d2b30; --line:#2b3c42; --fg:#e4ecee; --muted:#93a6ac;
  --accent:#75b3bb; --accent-ink:#061f25; --accent-soft:#16363b; --brand-2:#75b3bb;
  --good:#6fd08f; --good-soft:#173322; --warn:#f0b25c; --warn-soft:#3a2a12; --bad:#f08a80; --bad-soft:#3d1d1a; color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#0f1719; --surface:#162125; --surface-2:#1d2b30; --line:#2b3c42; --fg:#e4ecee; --muted:#93a6ac;
  --accent:#75b3bb; --accent-ink:#061f25; --accent-soft:#16363b; --brand-2:#75b3bb;
  --good:#6fd08f; --good-soft:#173322; --warn:#f0b25c; --warn-soft:#3a2a12; --bad:#f08a80; --bad-soft:#3d1d1a; color-scheme:dark}
*{box-sizing:border-box}
body{background:var(--bg);color:var(--fg);font-family:var(--body);font-size:14px;line-height:1.5}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:10;background:var(--surface)}
.wrap{max-width:1240px;margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
header{position:sticky;top:env(safe-area-inset-top,0px);z-index:5;background:var(--surface);border-bottom:1px solid var(--line)}
.hrow{display:flex;align-items:center;gap:12px;padding-block:12px 4px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--fg)}
.brand img{height:30px;width:auto;display:block}
.brand small{font-weight:600;font-size:11px;color:var(--muted);letter-spacing:.08em;text-transform:uppercase;padding-left:10px;border-left:1px solid var(--line)}
.who{display:flex;align-items:center;gap:4px;font-size:13px}
.who a.link{color:var(--muted);text-decoration:none;padding:4px 6px;font-weight:600}
.sync{margin-left:auto;font-size:12px;color:var(--muted)}
nav{display:flex;gap:2px;overflow-x:auto;scrollbar-width:none}
nav::-webkit-scrollbar{display:none}
nav a{padding:10px 12px;color:var(--muted);text-decoration:none;font-weight:500;border-bottom:2px solid transparent;white-space:nowrap}
nav a:hover{color:var(--fg)}
nav a.on{color:var(--accent);border-bottom-color:var(--accent)}
main{padding-block:20px 60px;display:flex;flex-direction:column;gap:20px}
h1,h2,h3{font-family:var(--display);margin:0;text-wrap:balance;letter-spacing:-.01em}
h1{font-size:24px}h2{font-size:17px}h3{font-size:15px}
.bar{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.bar .grow{flex:1}
.sub{color:var(--muted);font-size:13px}
.tiles{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px}
.tile{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:14px 16px}
.tile .k{font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);font-weight:600}
.tile .v{font-family:var(--display);font-size:26px;font-weight:700;font-variant-numeric:tabular-nums;margin-top:2px}
.tile .n{font-size:12px;color:var(--muted)}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:16px;display:flex;flex-direction:column;gap:12px;min-width:0}
.grid2{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,420px),1fr));gap:20px}
.tbl{overflow-x:auto;margin-inline:-16px;padding-inline:16px}
table{border-collapse:collapse;width:100%;font-variant-numeric:tabular-nums}
th{text-align:left;font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);font-weight:600;padding:6px 10px;border-bottom:1px solid var(--line);white-space:nowrap}
td{padding:9px 10px;border-bottom:1px solid var(--line);vertical-align:middle;white-space:nowrap}
td.wrapt{white-space:normal;min-width:160px}
tr.click{cursor:pointer}
tr.click:hover td{background:var(--surface-2)}
.num{text-align:right;font-family:var(--mono);font-size:13px}
th.num{font-family:var(--body)}
.name{font-weight:600}
.chip{display:inline-flex;align-items:center;gap:4px;padding:2px 8px;border-radius:999px;font-size:12px;font-weight:600;background:var(--surface-2);color:var(--muted)}
.chip.good{background:var(--good-soft);color:var(--good)}
.chip.warn{background:var(--warn-soft);color:var(--warn)}
.chip.bad{background:var(--bad-soft);color:var(--bad)}
.chip.acc{background:var(--accent-soft);color:var(--accent)}
.meter{position:relative;height:6px;background:var(--surface-2);border-radius:3px;min-width:80px;overflow:hidden}
.meter i{position:absolute;inset:0 auto 0 0;background:var(--accent);border-radius:3px}
.meter b{position:absolute;top:-2px;bottom:-2px;width:2px;background:var(--fg);opacity:.55}
.mcell{display:flex;align-items:center;gap:8px}
.mcell span{font-family:var(--mono);font-size:12px;min-width:36px;text-align:right}
button,.btn{font:inherit;font-weight:600;font-size:13px;border-radius:6px;border:1px solid var(--line);background:var(--surface);color:var(--fg);padding:7px 12px;cursor:pointer}
button:hover{background:var(--surface-2)}
button.pri{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
button.pri:hover{filter:brightness(1.08)}
button.danger{color:var(--bad);border-color:var(--bad)}
button.link{border:none;background:none;color:var(--accent);padding:4px 6px}
button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
button:disabled{opacity:.5;cursor:default}
input,select,textarea{font:inherit;color:var(--fg);background:var(--surface);border:1px solid var(--line);border-radius:6px;padding:7px 9px;width:100%;min-width:0}
textarea{min-height:70px;resize:vertical}
label.f{display:flex;flex-direction:column;gap:4px;font-size:12px;font-weight:600;color:var(--muted)}
.fgrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px}
.fgrid .full{grid-column:1/-1}
.days{display:flex;gap:4px;flex-wrap:wrap}
.days label{display:flex;align-items:center;gap:4px;font-weight:500;color:var(--fg);background:var(--surface-2);padding:4px 8px;border-radius:6px}
.days input{width:auto}
.sel{display:flex;gap:10px;flex-wrap:wrap;align-items:end}
.sel>*{flex:1 1 180px}
.empty{padding:28px 16px;text-align:center;color:var(--muted);border:1px dashed var(--line);border-radius:var(--r);display:flex;flex-direction:column;gap:10px;align-items:center}
.empty strong{color:var(--fg);font-family:var(--display);font-size:16px}
.roster{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:8px}
.pp{display:flex;align-items:center;gap:8px;padding:8px 10px;border:1px solid var(--line);border-radius:6px;cursor:pointer;user-select:none}
.pp input{width:auto}
.pp.abs{background:var(--bad-soft);border-color:var(--bad)}
.pp .st{margin-left:auto;font-size:12px;font-weight:600}
dialog{border:none;border-radius:12px;padding:0;background:var(--surface);color:var(--fg);width:min(760px,calc(100vw - 24px));max-height:calc(100vh - 40px);box-shadow:0 20px 60px rgba(0,0,0,.25)}
dialog::backdrop{background:rgba(10,20,24,.5)}
.dh{display:flex;align-items:center;gap:10px;padding:16px 20px;border-bottom:1px solid var(--line);position:sticky;top:0;background:var(--surface);z-index:1}
.dh h2{flex:1}
.db{padding:20px;display:flex;flex-direction:column;gap:16px}
.df{display:flex;gap:8px;justify-content:flex-end;flex-wrap:wrap;padding:14px 20px;border-top:1px solid var(--line);position:sticky;bottom:0;background:var(--surface)}
.df .left{margin-right:auto}
.toast{position:fixed;left:50%;bottom:calc(20px + env(safe-area-inset-bottom,0px));transform:translateX(-50%);background:var(--fg);color:var(--bg);padding:10px 16px;border-radius:8px;font-weight:600;z-index:50;max-width:calc(100vw - 32px)}
.note{background:var(--surface-2);border-radius:6px;padding:10px 12px;font-size:13px;color:var(--muted)}
.kv{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:10px}
.kv div{background:var(--surface-2);border-radius:6px;padding:8px 10px}
.kv .k{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.05em;font-weight:600}
.kv .v{font-family:var(--mono);font-size:15px}
.week{display:grid;grid-template-columns:repeat(7,minmax(120px,1fr));gap:6px;min-width:860px}
.week .d{background:var(--surface-2);border-radius:6px;padding:8px;min-height:90px;display:flex;flex-direction:column;gap:6px}
.week .d.today{outline:2px solid var(--accent)}
.week .d h4{margin:0;font-size:12px;letter-spacing:.05em;text-transform:uppercase;color:var(--muted)}
.slot{background:var(--surface);border-radius:4px;padding:5px 7px;font-size:12px;border-left:3px solid var(--accent)}
.slot b{display:block;font-size:12px}
.search{max-width:260px}
.banner{background:var(--warn-soft);color:var(--warn);padding:10px 14px;border-radius:var(--r);font-weight:500}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}
@media (max-width:560px){h1{font-size:20px}.tile .v{font-size:22px}}

@media (max-width:560px){.brand small{display:none}.brand img{height:24px}.sync{display:none}.who{margin-left:auto}}
a.btn{display:inline-block;text-decoration:none;text-align:center}
a.btn.pri{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.copyrow{display:flex;gap:8px;flex-wrap:wrap}
.copyrow input{flex:1 1 260px;font-family:var(--mono);font-size:12px}
/* standalone pages: login, install, student feedback */
body.solo{min-height:100vh;display:flex;justify-content:center;align-items:flex-start;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px));padding-block:48px}
.solo-wrap{width:100%;max-width:440px;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:28px 24px;display:flex;flex-direction:column;gap:14px}
.solo-logo img{height:44px;width:auto;display:block;margin-bottom:8px}
.solo-wrap p{margin:0}
.stack{display:flex;flex-direction:column;gap:14px}
.stack button{padding:11px 14px;font-size:15px}
.trap{position:absolute;left:-9999px;height:1px;overflow:hidden}
.rate{border:none;padding:0;margin:0}
.rate legend{font-size:12px;font-weight:600;color:var(--muted);margin-bottom:6px}
.rate-row{display:grid;grid-template-columns:repeat(5,1fr);gap:6px}
.rate-row label{cursor:pointer}
.rate-row input{position:absolute;opacity:0;width:1px;height:1px}
.rate-row span{display:flex;flex-direction:column;align-items:center;gap:2px;padding:10px 2px;border:1px solid var(--line);border-radius:8px;font-size:11px;color:var(--muted);text-align:center}
.rate-row span b{font-family:var(--display);font-size:20px;color:var(--fg)}
.rate-row input:checked+span{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.rate-row input:checked+span b{color:var(--accent-ink)}
.rate-row input:focus-visible+span{outline:2px solid var(--accent);outline-offset:2px}
/* student portal */
.panel.lms{flex-direction:row;align-items:center;flex-wrap:wrap;background:var(--accent-soft);border-color:transparent}
.panel.lms .grow{flex:1 1 260px}
.doclist{display:flex;flex-direction:column;gap:8px}
.doclist .btn{text-align:left}
/* certificate verification */
.verified{background:var(--good-soft);color:var(--fg);border-radius:8px;padding:14px 16px}
.verified>b{color:var(--good);font-size:16px}
.verified dl{display:grid;grid-template-columns:auto 1fr;gap:4px 14px;margin:10px 0 0}
.verified dt{color:var(--muted);font-size:12px;font-weight:600;padding-top:2px}
.verified dd{margin:0;font-weight:600}
.lmsrow{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
/* installment editor & notices */
.inst{display:flex;flex-direction:column;gap:8px}
.instrows{display:flex;flex-direction:column;gap:6px}
.instrow{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr) auto;gap:8px;align-items:center}
.stackp{display:flex;flex-direction:column;gap:12px}
.panel.click{cursor:pointer}
.panel.click:hover{border-color:var(--accent)}
.notice{border-left:3px solid var(--accent);padding:4px 0 4px 12px}
.notice b{display:block}
.notice .sub{margin-top:2px}
.actions{display:flex;gap:8px;flex-wrap:wrap}
.sched{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:10px}
.alertbox{background:var(--warn-soft);border-radius:8px;padding:12px 14px;display:flex;flex-direction:column;gap:8px}
.alertbox b{color:var(--warn)}
.banner a{color:inherit;font-weight:700}
.job{border:1px solid var(--line);border-radius:8px;padding:12px 14px;display:flex;flex-direction:column;gap:6px}
.job .bar{gap:6px}
/* two-step login setup */
.steps{margin:0;padding-left:20px;display:flex;flex-direction:column;gap:4px}
.qrbox{align-self:center;background:#fff;padding:10px;border-radius:8px;width:220px;height:220px}
.qrbox img,.qrbox canvas{width:200px!important;height:200px!important}
.secret{display:block;font-family:var(--mono);font-size:15px;letter-spacing:.06em;background:var(--surface-2);padding:8px 10px;border-radius:6px;margin-top:6px;word-break:break-all}
details summary{cursor:pointer}