/* app.css — visual style carried over from the prototype. */
:root{
  --panel:#eef2f1; --ink:#14201f; --muted:#56635f; --line:#c9d3d0; --accent:#0e6e64;
  --ok:#0e6e64; --flag:#b4232f; --chip:#dfe7e5; --viewer:#05090b; --warnbg:#fbeaea;
  --fem:#38b6e8; --tib:#f0b429; --mech:#ee5fa7; --cal:#9bd33c;
  box-sizing:border-box; padding-top:env(safe-area-inset-top,0px); padding-bottom:env(safe-area-inset-bottom,0px);
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --panel:#141c1e; --ink:#e6eeec; --muted:#9aa9a5; --line:#2b3739; --accent:#4cc3b3; --ok:#4cc3b3; --flag:#ff6b75; --chip:#1f2a2c; --warnbg:#2b1a1c;}}
:root[data-theme="dark"]{--panel:#141c1e; --ink:#e6eeec; --muted:#9aa9a5; --line:#2b3739; --accent:#4cc3b3; --ok:#4cc3b3; --flag:#ff6b75; --chip:#1f2a2c; --warnbg:#2b1a1c;}
*,*::before,*::after{box-sizing:inherit}
html,body{height:100%;margin:0}
body{background:var(--panel);color:var(--ink);font:16px/1.45 "Atkinson Hyperlegible",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  display:flex;flex-direction:column;height:100%;overflow:hidden}
[hidden]{display:none!important}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.app-head{display:flex;align-items:center;gap:.6rem;padding:.5rem .8rem;border-bottom:1px solid var(--line);flex-wrap:wrap}
.app-head h1{font-size:1.05rem;margin:0;font-weight:700;flex:1;display:flex;align-items:center;gap:.4rem;white-space:nowrap}
button,select,input,textarea{font:inherit;color:inherit}
.btn{border:1px solid var(--line);background:var(--chip);border-radius:8px;padding:.45rem .75rem;cursor:pointer;min-height:40px;display:inline-flex;align-items:center;justify-content:center;text-align:center}
.btn.small{min-height:32px;padding:.25rem .6rem;font-size:.88rem}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}
.btn:focus-visible,select:focus-visible,input:focus-visible,button:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.btn[disabled]{opacity:.45;cursor:not-allowed}
.view{flex:1;min-height:0;display:flex;flex-direction:column}
.view[hidden]{display:none}
#viewer{position:relative;flex:1;min-height:0;background:var(--viewer);touch-action:none;overflow:hidden}
canvas{display:block;width:100%;height:100%}
#empty{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.8rem;color:#c7d3d0;text-align:center;padding:1.5rem}
#empty[hidden]{display:none}
#empty p{max-width:34ch;margin:0;color:#8fa19c;font-size:.92rem}
#zoomhint{position:absolute;right:.6rem;top:.6rem;color:#8fa19c;font-size:.78rem;pointer-events:none}
#sheet{border-top:1px solid var(--line);max-height:48%;overflow-y:auto;overflow-x:hidden;padding:.6rem .8rem .8rem}
.toolpick{margin-bottom:.4rem;flex-wrap:nowrap}
.toolpick select{flex:1;min-width:0;min-height:40px;border:1px solid var(--line);border-radius:8px;background:var(--chip);padding:.3rem .5rem}
.step{display:flex;gap:.7rem;align-items:flex-start;margin:.45rem 0 .55rem}
.step .n{flex:none;width:2.1rem;height:2.1rem;border-radius:50%;display:grid;place-items:center;font-weight:700;color:#fff;background:var(--accent);font-variant-numeric:tabular-nums;border:2px solid var(--ink)}
.step .t{font-weight:700}
.step .h{color:var(--muted);font-size:.9rem;margin-bottom:.25rem}
.row{display:flex;gap:.45rem;flex-wrap:wrap;align-items:center}
.row.between{justify-content:space-between}
.seg{display:inline-flex;border:1px solid var(--line);border-radius:8px;overflow:hidden}
.seg button{border:0;background:transparent;padding:.4rem .8rem;min-height:38px;cursor:pointer}
.seg button[aria-pressed="true"]{background:var(--accent);color:#fff}
table{width:100%;border-collapse:collapse;margin-top:.5rem;font-variant-numeric:tabular-nums}
td{padding:.35rem .2rem;border-bottom:1px solid var(--line);vertical-align:top}
td.v{text-align:right;font-weight:700;min-width:5.5em;max-width:48%}
td{overflow-wrap:anywhere}
td.n{color:var(--muted);font-size:.82rem;text-align:right}
.src{color:var(--muted);font-size:.74rem;font-weight:400}
.flag{color:var(--flag)} .ok{color:var(--ok)}
.note{color:var(--muted);font-size:.85rem;margin:.5rem 0 0}
.warn{background:var(--warnbg);border-left:4px solid var(--flag);padding:.4rem .6rem;border-radius:4px;font-size:.88rem;margin:.5rem 0}
.warn.amber{background:#fff4dc;border-left-color:#d98a00;color:#5a3b00}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .warn.amber{background:#3a2c10;color:#ffd58a}}
:root[data-theme="dark"] .warn.amber{background:#3a2c10;color:#ffd58a}
.badge{display:inline-block;background:#d98a00;color:#fff;border-radius:999px;padding:0 .45em;font-size:.72rem;font-weight:700;vertical-align:middle;white-space:nowrap}
.badge.ok{background:var(--ok)}
.calpick{border-left:4px solid var(--accent)}
.calsrc{flex-basis:100%;font-size:.85rem;display:flex;gap:.4rem;align-items:center;flex-wrap:wrap}
.critical{background:#b4232f;color:#fff;font-weight:700;padding:.6rem .7rem;border-radius:8px;margin:.5rem 0;font-size:.95rem}
.validity{color:var(--muted);font-size:.8rem;margin-top:.7rem;border-top:1px dashed var(--line);padding-top:.4rem}
.validity ul{margin:.2rem 0 0;padding-left:1.1rem}
.opts{display:flex;flex-wrap:wrap;gap:.35rem .9rem;margin:.4rem 0;padding:.45rem .55rem;background:var(--chip);border-radius:8px}
.box{border:1px solid var(--line);border-radius:8px;padding:.45rem .6rem;margin-top:.55rem}
.box .bt{font-weight:700;font-size:.9rem}
.box .bb{font-size:.88rem}
.exp{margin-top:.7rem}
details{margin-top:.6rem}
summary{cursor:pointer;font-weight:700}
textarea{width:100%;min-height:8rem;font:13px/1.4 ui-monospace,Menlo,Consolas,monospace;background:var(--chip);color:var(--ink);border:1px solid var(--line);border-radius:8px;padding:.5rem}
label.inline{display:flex;gap:.4rem;align-items:center;font-size:.9rem}
input[type=number],input[type=text],input[type=date],select{padding:.35rem;border:1px solid var(--line);border-radius:6px;background:var(--chip)}
input[type=number]{width:5.5rem}
dialog{border:1px solid var(--line);border-radius:12px;background:var(--panel);color:var(--ink);width:min(560px,94vw);max-height:90vh;padding:1rem}
dialog::backdrop{background:rgba(0,0,0,.5)}
dialog h2{margin:0 0 .4rem;font-size:1.1rem}
#caseLabel{flex:1;min-width:10rem}
.cases{list-style:none;padding:0;margin:.5rem 0}
.cases li{display:flex;justify-content:space-between;gap:.5rem;align-items:center;padding:.4rem 0;border-bottom:1px solid var(--line)}
/* decision cards */
.dec{margin-top:.7rem}
.dec .dt{font-weight:700;font-size:.9rem;margin-bottom:.25rem}
.dcard{border:1px solid var(--line);border-left:6px solid var(--muted);border-radius:8px;padding:.45rem .6rem;margin-top:.45rem;font-size:.9rem;background:var(--panel)}
.dcard.ok{border-left-color:var(--ok)} .dcard.watch{border-left-color:#d98a00} .dcard.act{border-left-color:var(--flag)} .dcard.pending{border-left-color:var(--muted);border-style:dashed;border-left-style:solid}
.dcard .chip{display:inline-block;border-radius:999px;padding:0 .55em;font-size:.72rem;font-weight:700;margin-bottom:.2rem;color:#fff;background:var(--muted)}
.dcard .chip.ok{background:var(--ok)} .dcard .chip.watch{background:#b07000} .dcard .chip.act{background:var(--flag)}
.note.contra{display:flex;align-items:center;gap:.5rem;flex-wrap:wrap;background:var(--chip);border-left:4px solid #d98a00;border-radius:6px;padding:.3rem .5rem;margin:.4rem 0}
.dcard .dl{margin:.15rem 0;overflow-wrap:anywhere}
.dcard .src{color:var(--muted);font-size:.78rem}
.dcard .near{color:#8a5a00;font-weight:700}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .dcard .near{color:#ffd58a}}
:root[data-theme="dark"] .dcard .near{color:#ffd58a}
.dcard .needs{color:var(--flag);font-size:.82rem}
.dcard .dinputs{display:flex;flex-wrap:wrap;gap:.3rem .8rem;margin:.3rem 0;padding:.35rem .45rem;background:var(--chip);border-radius:6px}
.dcard .dinputs label.needed{font-weight:700}
.dcard .dinputs select{max-width:100%}
.dcard .disc{color:var(--muted);font-size:.74rem;margin-top:.3rem;border-top:1px dashed var(--line);padding-top:.2rem}
#sumPrintArea{display:none}
/* page views (calculators, documents) */
.page{overflow-y:auto;padding:.8rem;display:block}
.page .inner{max-width:900px;margin:0 auto}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:.5rem;margin:.5rem 0 1rem}
.card{border:1px solid var(--line);border-radius:10px;background:var(--chip);padding:.6rem .7rem;text-align:left;cursor:pointer;min-height:56px}
.card b{display:block}
.card span{color:var(--muted);font-size:.82rem}
.card[aria-current="true"]{outline:3px solid var(--accent)}
.calc h2{font-size:1.1rem;margin:.3rem 0}
.calc fieldset{border:1px solid var(--line);border-radius:8px;margin:.5rem 0;padding:.4rem .7rem .6rem}
.calc legend{font-weight:700;font-size:.92rem;padding:0 .3rem}
.calc label.opt{display:flex;gap:.5rem;align-items:flex-start;padding:.25rem 0;font-size:.93rem}
.calc label.opt input{margin-top:.25rem;flex:none}
.calc .pts{margin-left:auto;color:var(--muted);font-size:.82rem;white-space:nowrap;padding-left:.5rem}
.score{font-size:1.25rem;font-weight:700;margin:.6rem 0 .2rem}
.ref{color:var(--muted);font-size:.8rem;border-top:1px dashed var(--line);margin-top:.8rem;padding-top:.4rem}
.grid2{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:.4rem .9rem}
.cal-table td{font-size:.85rem;padding:.2rem}
.schips{display:flex;gap:.35rem;overflow-x:auto;flex-wrap:nowrap;padding:.15rem 0;margin:.25rem 0 0;-webkit-overflow-scrolling:touch}
.schip{flex:none;border:1px solid var(--line);background:var(--chip);border-radius:999px;padding:.25rem .65rem;font-size:.8rem;min-height:30px;cursor:pointer;white-space:nowrap}
.schip.warn{background:#fff4dc;border-color:#d98a00;color:#5a3b00;font-weight:700}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .schip.warn{background:#3a2c10;color:#ffd58a}}
:root[data-theme="dark"] .schip.warn{background:#3a2c10;color:#ffd58a}
.loadhint{margin:.1rem 0 .3rem;font-size:.74rem}
.ptoggle{margin:.3rem 0}
.ptoggle .btn{width:100%;justify-content:space-between}
/* phones in portrait: the image area is at least 55% of the screen; the panel scrolls in what is left */
@media (max-width:520px) and (orientation:portrait){
  #viewer{flex:1 1 55vh;min-height:55vh;min-height:55dvh}
  #sheet{flex:0 1 auto;max-height:none;min-height:0}
}
@media (min-width:900px){
  #v-measure{flex-direction:row}
  #viewer{flex:1;height:100%}
  #sheet{width:400px;max-height:none;height:100%;border-top:0;border-left:1px solid var(--line)}
}
@media (max-width:520px){
  .app-head{padding:.4rem .6rem;gap:.4rem}
  .app-head h1{font-size:1rem}
  #nav{order:3;width:100%}
  #nav button{flex:1;padding:.35rem .3rem}
  #sheet{max-height:52%}
  .cards{grid-template-columns:1fr 1fr;gap:.35rem}
  .card{min-height:0;padding:.45rem .55rem;font-size:.9rem}
  .card span{display:none}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}
/* documents (A4 paper look on screen) */
.grp{font-size:1rem;margin:.6rem 0 0}
.doctools{position:sticky;top:0;background:var(--panel);padding:.4rem 0;z-index:2;border-bottom:1px solid var(--line)}
.doc{background:#fff;color:#111;max-width:210mm;margin:.6rem auto;padding:12mm 12mm 14mm;border-radius:6px;box-shadow:0 1px 6px rgba(0,0,0,.25);font:15px/1.45 "Atkinson Hyperlegible","Nirmala UI","Noto Sans Devanagari","Mangal",system-ui,sans-serif}
.doc h2{text-align:center;font-size:1.15rem;margin:.4rem 0 .8rem}
.doc h3{font-size:.98rem;margin:1rem 0 .3rem;border-bottom:1.5px solid #333;padding-bottom:.15rem;grid-column:1/-1}
.doc .fields{display:grid;grid-template-columns:1fr 1fr;gap:.35rem 1.1rem}
.doc .field{display:flex;flex-direction:column;min-width:0}
.doc .field.w2{grid-column:1/-1}
.doc .field>span{font-size:.78rem;color:#444}
.doc input,.doc select{border:0;border-bottom:1px solid #999;border-radius:0;background:transparent;color:#111;padding:.2rem 0;width:100%}
.doc .area{min-height:2.4em;border:1px solid #bbb;padding:.35rem .45rem;white-space:pre-wrap;border-radius:4px;outline-offset:2px}
.doc .area.ph{border:2px dashed #b4232f;background:#fff7f7}
.doc .area.ph:empty::before{content:attr(data-label);color:#b4232f;font-weight:700;font-size:.85rem}
.doc .letterhead{text-align:center;min-height:2.6em;margin-bottom:.3rem}
.doc .checks label{display:flex;gap:.5rem;align-items:flex-start;padding:.18rem 0;font-size:.92rem}
.doc .checks input{width:auto;margin-top:.25rem}
.doc .sigs{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem 1.6rem;margin-top:1.3rem;grid-column:1/-1}
.doc .sigline{border-bottom:1px solid #333;height:2.4rem}
.doc .sig span{font-size:.78rem;color:#444}
.doc .dtable{margin-top:.2rem}.doc .dtable th{font-size:.78rem;text-align:left;color:#444}.doc .dtable td{padding:.1rem .3rem;border-bottom:0}
.doc .dnote{font-size:.76rem;color:#555;grid-column:1/-1}
@media (max-width:520px){.doc{padding:6mm}.doc .fields,.doc .sigs{grid-template-columns:1fr}}