/* Base page rules (from the original claude.ai page) */
:root{color-scheme:light;box-sizing:border-box;padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)}
html{scroll-padding-top:env(safe-area-inset-top,0px)}
body{margin:0;padding:0;font:14px -apple-system,BlinkMacSystemFont,sans-serif;background:#faf9f5;color:#141413}
img{max-width:100%}
[hidden]:not([hidden=until-found i]){display:none!important}

/* Layout: a sheet of paper. Home = section buttons by course. Observe = map on the paper (left), compact tally + totals (right). */
:root{
  --paper:#FCFCFA; --ink:#1A2328; --muted:#5E6B70; --faint:#97A2A5; --rule:#E2E6E4; --soft:#F1F3F1; --head:#DDE3E1; --band:#ECEFED;
  --desk:#F4F5F2; --desk-edge:#8E999C; --teacher:#2A5DB0; --student:#C05F17; --class:#6A4E9E;
  --accent:#0E7C66; --accent-ink:#FFFFFF; --warn:#B3261E; --alert:#F4B63A; --alert-ink:#1A2328;
  --f-display:"Bricolage Grotesque", "Avenir Next", system-ui, sans-serif;
  --f-body:"Atkinson Hyperlegible", "Helvetica Neue", Arial, sans-serif;
  --f-mono:"IBM Plex Mono", ui-monospace, Menlo, monospace;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --paper:#15191B; --ink:#E6EBE9; --muted:#A3AEB1; --faint:#6D797C; --rule:#2A3235; --soft:#1E2427; --head:#2B353A; --band:#232A2D;
  --desk:#1E2427; --desk-edge:#7F8B8E; --teacher:#82AAF0; --student:#F0A05C; --class:#B89DEB;
  --accent:#3CBE9D; --accent-ink:#0B1A16; --warn:#F2827A; --alert:#F2B33D; --alert-ink:#15191B; color-scheme:dark }}
:root[data-theme="dark"]{
  --paper:#15191B; --ink:#E6EBE9; --muted:#A3AEB1; --faint:#6D797C; --rule:#2A3235; --soft:#1E2427; --head:#2B353A; --band:#232A2D;
  --desk:#1E2427; --desk-edge:#7F8B8E; --teacher:#82AAF0; --student:#F0A05C; --class:#B89DEB;
  --accent:#3CBE9D; --accent-ink:#0B1A16; --warn:#F2827A; --alert:#F2B33D; --alert-ink:#15191B; color-scheme:dark }

html,body{height:100%}
body{background:var(--paper);color:var(--ink);font-family:var(--f-body);font-size:15px;-webkit-tap-highlight-color:transparent}
*{box-sizing:border-box}
button,input{font:inherit;color:inherit}
button{touch-action:manipulation;cursor:pointer;user-select:none;-webkit-user-select:none;background:none;border:0}
button:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

.view{height:100%;padding-inline:16px;padding-block:8px 10px}
.bar{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;min-height:44px}
.bar .left{font-family:var(--f-display);font-weight:700;font-size:18px;display:flex;align-items:center;gap:4px;min-width:0}
.bar .left .lbl{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.home-btn{margin-left:-10px;flex:none}
.bar .right{justify-self:end;position:relative}
.icon-btn{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;color:var(--muted)}
.icon-btn:active,.icon-btn[aria-expanded="true"]{background:var(--soft);color:var(--ink)}
.icon-btn svg{width:22px;height:22px}
.text-btn{height:40px;padding:0 14px;border-radius:10px;border:1px solid var(--rule);font-weight:700}
.text-btn:active{background:var(--soft)}
.text-btn[disabled]{opacity:.35;cursor:default}

/* menu */
.menu{position:absolute;right:0;top:50px;min-width:210px;background:var(--paper);border:1px solid var(--rule);border-radius:12px;box-shadow:0 10px 30px rgba(0,0,0,.12);padding:6px;z-index:20;display:flex;flex-direction:column}
.menu button{text-align:left;padding:12px 12px;border-radius:8px;font-size:15px}
.menu hr{border:0;border-top:1px solid var(--rule);margin:4px 6px}
.menu button:active{background:var(--soft)}

/* timer */
.timer{display:flex;align-items:center;gap:10px;height:44px;padding:0 14px;border:1px solid var(--rule);border-radius:12px}
.timer .t{font-family:var(--f-mono);font-weight:600;font-size:22px;font-variant-numeric:tabular-nums}
.timer .s{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.08em}
.timer.running .s{color:var(--accent)}
.timer.over .t{color:var(--warn)}
/* every 30 seconds without a logged action, the clock lights up until the next tap */
.timer.alert{background:var(--alert);border-color:var(--alert);animation:nudge 1.4s ease-in-out infinite}
.timer.alert .t,.timer.alert .s{color:var(--alert-ink)}
@keyframes nudge{0%,100%{transform:scale(1)}50%{transform:scale(1.06)}}

/* home: three grade columns, everything on one screen */
.home{height:calc(100% - 44px);overflow:auto;padding-block:4px 8px;display:flex;flex-direction:column;gap:10px}
.resume{display:flex;align-items:center;justify-content:space-between;gap:12px;width:100%;padding:10px 14px;border-radius:12px;background:var(--accent);color:var(--accent-ink);text-align:left;flex:none}
.resume b{font-family:var(--f-display);font-size:16px}
.grades{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;align-items:start}
.grade h2{font-family:var(--f-display);font-size:17px;margin:0 0 8px;padding-bottom:6px;border-bottom:1px solid var(--rule)}
.course{margin-bottom:10px}
.course h3{font-size:11px;text-transform:uppercase;letter-spacing:.1em;color:var(--muted);margin:0 0 5px;font-weight:700}
.secs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}
.sec{border:1px solid var(--rule);border-radius:12px;padding:8px 10px;text-align:left;display:flex;flex-direction:column;gap:1px;min-width:0}
.sec:active{background:var(--soft)}
.sec .code{font-family:var(--f-display);font-weight:700;font-size:20px;line-height:1.05}
.sec .who{font-weight:700;font-size:12.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sec .when{font-size:11px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.dots{display:flex;gap:4px;margin-top:3px}
.dots i{width:8px;height:8px;border-radius:50%;border:1.5px solid var(--faint)}
.dots i.on{background:var(--accent);border-color:var(--accent)}
.empty{padding:28px 0;color:var(--muted)}
.testbar{margin-top:auto;display:flex;align-items:center;gap:14px;border-top:1px dashed var(--faint);padding-top:10px;flex-wrap:wrap}
.testbar .tlabel{font-size:11px;text-transform:uppercase;letter-spacing:.1em;color:var(--muted);font-weight:700;padding-right:14px;border-right:1px solid var(--rule)}
.testbar .tbtns{display:flex;gap:8px;flex-wrap:wrap}
.testbar .sec.test{min-width:104px}
.sec.test{padding:6px 10px}
.sec.test .code{font-size:16px}

/* observe */
.obs-body{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:16px;height:calc(100% - 44px)}   /* questions take about 1/3 of the screen */
.map-col{position:relative;min-height:0;display:grid;grid-template-rows:minmax(0,1fr) auto}
.map-wrap{min-height:0;display:flex;padding-top:4px}
.map-wrap svg{width:100%;height:100%;display:block;touch-action:manipulation;user-select:none;-webkit-user-select:none}
.node{cursor:pointer}
.acts{display:flex;justify-content:flex-end;align-items:center;gap:8px;padding-top:6px}
.acts .gap{width:14px}
.acts .text-btn{height:40px;padding:0 12px;background:var(--paper);font-size:13.5px;white-space:nowrap}
.acts .text-btn small{font-family:var(--f-mono);font-size:12px;font-weight:600;color:var(--muted);margin-left:2px}
.acts .hand{border-color:var(--student);color:var(--student)}
.acts .hand[aria-pressed="true"]{background:var(--student);color:var(--paper)}
.acts .hand[aria-pressed="true"] small{color:var(--paper)}
.att{position:absolute;left:0;top:0;display:flex;align-items:center;gap:10px;background:var(--paper);border:1px solid var(--rule);border-radius:12px;padding:6px 6px 6px 12px;font-size:13px;color:var(--muted);z-index:2}
.side{--rowh:calc((100vh - 170px) / 9);display:grid;grid-template-rows:minmax(0,1fr) auto;gap:8px;min-height:0;border-left:1px solid var(--rule);padding-left:14px}
/* tally rows size themselves from the height they're given, so nine rows always fit without scrolling */
.qgrid{display:grid;grid-template-columns:minmax(0,1fr) auto;column-gap:8px;grid-template-rows:repeat(9,minmax(0,1fr));min-height:0}
.q{grid-column:1 / -1;display:grid;grid-template-columns:minmax(0,1fr) auto;grid-template-columns:subgrid;align-items:center;border-bottom:1px solid var(--rule);min-height:0;overflow:hidden}
.q:last-child{border-bottom:0}
.q-txt{min-width:0}
.q-name,.q-info,.q-ex{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.q-code{font-family:var(--f-body);font-weight:400;font-stretch:100%;color:var(--faint);font-size:.82em;margin-left:4px}
.q-name{font-family:var(--f-display);font-weight:700;font-stretch:88%;font-size:var(--qns, clamp(11.5px,calc(var(--rowh) * .28),15px));line-height:1.14}
.q-info,.q-ex{font-family:var(--f-display);font-weight:400;font-stretch:82%;font-size:var(--qfs, clamp(9.5px,calc(var(--rowh) * .22),12px));line-height:1.2}
.q-info{color:var(--muted)}
.q-ex{color:var(--faint);font-style:italic}
.q-ctl{display:flex;align-items:center;gap:2px}
.q-ctl .minus{width:clamp(22px,calc(var(--rowh) * .5),30px)!important}
.q-ctl .sbtn{width:clamp(24px,calc(var(--rowh) * .56),32px)!important}
.q-ctl button{width:clamp(28px,calc(var(--rowh) * .66),38px);height:clamp(28px,calc(var(--rowh) * .66),38px);border-radius:9px;border:1px solid var(--rule);font-size:clamp(16px,calc(var(--rowh) * .4),22px);line-height:1;display:grid;place-items:center}
.q-ctl .plus{background:var(--accent);border-color:var(--accent);color:var(--accent-ink);font-weight:700}
.q-ctl .sbtn{font-family:var(--f-display);font-weight:700;font-size:clamp(13px,calc(var(--rowh) * .3),17px);border-color:var(--student);color:var(--student)}
.q-ctl .sbtn[aria-pressed="true"]{background:var(--student);color:var(--paper)}
.q-ctl output{font-family:var(--f-mono);font-weight:600;font-size:clamp(13px,calc(var(--rowh) * .36),19px);min-width:1.9ch;text-align:center;font-variant-numeric:tabular-nums}
.q.flash output{color:var(--accent)}
.totals{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border:1px solid var(--rule);border-radius:10px}
.stat{padding:4px 6px;min-width:0;border-right:1px solid var(--rule);text-align:center}
.stat:nth-child(3n){border-right:0}
.stat:nth-child(-n+3){border-bottom:1px solid var(--rule)}
.stat .v{font-family:var(--f-mono);font-weight:600;font-size:14px;font-variant-numeric:tabular-nums;white-space:nowrap}
.stat .v small{font-size:10px;color:var(--muted);font-weight:500}
.stat .l{font-size:10px;color:var(--muted);line-height:1.15;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* student tally pop-up */
.overlay{position:fixed;inset:0;background:rgba(10,16,18,.45);z-index:40;display:flex;align-items:center;justify-content:center;padding:16px}
.sheet{background:var(--paper);border:1px solid var(--rule);border-radius:14px;width:fit-content;max-width:100%;max-height:100%;overflow:auto;padding:14px 18px 18px}
.sheet-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:8px}
.sheet-head h2{font-family:var(--f-display);font-size:19px;margin:0}
.sheet .cols{display:flex;gap:26px;align-items:flex-start}
.sheet h3{font-family:var(--f-display);font-size:15px;margin:0 0 6px}
.sheet table{border-collapse:collapse;font-size:13px;font-variant-numeric:tabular-nums}
.sheet th,.sheet td{text-align:left;padding:4px 10px;white-space:nowrap}
.sheet thead th{background:var(--head);color:var(--ink);font-size:11px;letter-spacing:.04em;font-weight:700}
.sheet tbody tr:nth-child(even){background:var(--soft)}
.sheet .n{text-align:center;min-width:3ch}
.sheet .vr{border-right:1.5px solid var(--faint)}
.sheet .hi{color:var(--accent);font-weight:700}
.sheet tr.absent td{color:var(--faint)}
.sheet tr.total td{font-weight:700;border-top:1.5px solid var(--faint);background:var(--paper)}
.sheet .order{font-family:var(--f-mono);font-size:12px;color:var(--muted);white-space:normal;max-width:220px}
.sheet .foot{margin-top:10px;font-size:13px;color:var(--muted)}
.viz{width:min(1000px,100%)}
.viz .vgrid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:8px 26px}
.viz section{margin-bottom:14px}
.viz section.wide{grid-column:1 / -1}
.viz h3{margin:4px 0 2px}
.viz .cap{font-size:12.5px;color:var(--muted);margin:0 0 4px;max-width:80ch}
.viz svg{width:100%;height:auto;display:block}
.viz svg text{font-family:var(--f-body)}
.vtip{position:fixed;pointer-events:none;background:var(--ink);color:var(--paper);font-size:12px;padding:6px 8px;border-radius:6px;max-width:260px;z-index:60;line-height:1.35}
.choice{display:flex;flex-direction:column;gap:12px;min-width:min(340px,100%)}
.choice .row-btns{display:flex;gap:8px;justify-content:flex-end;flex-wrap:wrap}

/* list pages */
.page{max-width:820px;margin:0 auto;overflow-y:auto;height:calc(100% - 44px);padding-block:6px 24px}
.rows{display:flex;flex-direction:column}
.row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:10px;align-items:center;padding:12px 4px;border-bottom:1px solid var(--rule);text-align:left;width:100%}
.row:active{background:var(--soft)}
.row .main{font-weight:700}
.row .sub{font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}
.row .del{color:var(--warn);font-size:13px;padding:8px 10px;border-radius:8px}
.past .row{grid-template-columns:auto minmax(0,1fr) auto}
.pick{width:44px;height:44px;display:grid;place-items:center}
.pick i{width:22px;height:22px;border-radius:6px;border:2px solid var(--faint);display:grid;place-items:center}
.pick[aria-pressed="true"] i{background:var(--accent);border-color:var(--accent)}
.pick[aria-pressed="true"] i::after{content:"";width:10px;height:5px;border-left:2.5px solid var(--accent-ink);border-bottom:2.5px solid var(--accent-ink);transform:translateY(-1px) rotate(-45deg)}
.bar .right.btns{display:flex;gap:8px;align-items:center}
.log{font-family:var(--f-mono);font-size:14px;font-variant-numeric:tabular-nums}
.log .row{grid-template-columns:5.5ch minmax(0,1fr);cursor:default}
.log .t{color:var(--muted)}
.edit .row{grid-template-columns:70px minmax(0,1fr) 90px;cursor:default}
.edit input{height:38px;border:1px solid var(--rule);border-radius:9px;background:var(--paper);padding:0 10px;width:100%;min-width:0}
.edit .code{font-family:var(--f-display);font-weight:700;font-size:18px}
.page-actions{display:flex;justify-content:flex-end;gap:10px;padding-top:14px}
.primary{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}

.toast{position:fixed;left:50%;bottom:calc(18px + env(safe-area-inset-bottom, 0px));transform:translateX(-50%);background:var(--ink);color:var(--paper);padding:10px 16px;border-radius:10px;font-size:14px;z-index:30;max-width:calc(100% - 32px)}

/* sign-in screen */
.gate{display:grid;place-items:center}
.gate-card{max-width:380px;width:100%;text-align:center;display:flex;flex-direction:column;gap:14px;align-items:center}
.gate-card h1{font-family:var(--f-display);font-size:28px;margin:0}
.gate-card p{margin:0;color:var(--muted);line-height:1.45}
.gate-card .text-btn{height:46px;padding:0 22px;font-size:16px}

@media (max-width:700px){ .grades{grid-template-columns:1fr} }
@media (max-width:700px), (orientation:portrait) and (max-width:900px){
  .obs-body{grid-template-columns:1fr;height:auto}
  .map-col{height:62vh}
  .side{--rowh:52px;max-width:none}
  .view{height:auto;min-height:100%}
  .side{border-left:0;padding-left:0;border-top:1px solid var(--rule);padding-top:10px}
  .qgrid{grid-template-rows:none}
  .sheet .cols{flex-direction:column}
  .viz .vgrid{grid-template-columns:1fr}
  .totals{grid-template-columns:repeat(3,minmax(0,1fr))}
  .q{padding-block:8px}
}
@media (prefers-reduced-motion: reduce){*{animation:none!important;transition:none!important}}