/* ===========================================================================
   ALLOTMENT — the theme.

   Institutional and exact. This screen exists to be believed by an
   examinations controller, and an examinations controller believes ruled
   lines, aligned figures and a visible count.

   - Paper white with a warm grey wash, one ink navy, one signal red for a
     constraint that is being broken. No gradients anywhere.
   - The centre columns are the chart. Nothing is abstracted into a bar chart
     beside the data - the allocation IS the picture, one cell per candidate,
     and a column that is over capacity is visibly over the line.
   - Tight tracking on the headings and a tabular figure everywhere. This
     wants to look like a printed allotment order, because it becomes one.
   - The only motion is the solver working. When it stops, the screen is
     still.
   =========================================================================== */
:root{
  --bg:#F7F7F5;
  --card:#FFFFFF;
  --ink:#111318;
  --ink-2:#3A4048;
  --mut:#6F757F;
  --line:#E2E3E0;
  --line-2:#C7C9C5;
  --navy:#1B3A6B;
  --navy-2:#2E5795;
  --navy-soft:#EDF1F8;
  --red:#B3261E;
  --red-soft:#FBECEB;
  --amber:#8A5B00;
  --amber-soft:#FCF3E2;
  --grn:#14603C;
  --grn-soft:#E8F3ED;
  --ui:var(--f-text);
  --mono:var(--f-data);
}
*{box-sizing:border-box}
body{
  margin:0;min-height:100vh;color:var(--ink);
  font:14px/1.5 var(--ui);-webkit-font-smoothing:antialiased;
  /* GROUND: graph paper. A cool wash under the masthead over a 16px square
     grid at 2% - the sheet a seating plan gets drawn on. */
  background:
    radial-gradient(60% 36% at 14% 0%,rgba(27,58,107,.05),transparent 62%),
    repeating-linear-gradient(0deg,rgba(17,19,24,.02) 0 1px,transparent 1px 16px),
    repeating-linear-gradient(90deg,rgba(17,19,24,.02) 0 1px,transparent 1px 16px),
    var(--bg);
}
button,select,input{font:inherit;color:inherit}
.wrap{max-width:1460px;margin:0 auto;padding:22px 24px 56px}

/* ------------------------------------------------------------------- head */
.hd{display:flex;align-items:flex-end;gap:22px;flex-wrap:wrap;
  border-bottom:1.5px solid var(--ink);padding-bottom:13px}
.hd h1{margin:0;font-size:23px;font-weight:700;letter-spacing:-.024em}
.hd .sub{margin:4px 0 0;font-size:13px;color:var(--mut)}
.hd .acts{margin-left:auto;display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.bt{
  height:36px;padding:0 16px;border:1px solid var(--line-2);border-radius:4px;
  background:var(--card);cursor:pointer;font-size:13.5px;font-weight:600;
  display:inline-flex;align-items:center;gap:8px;white-space:nowrap;transition:.13s;
}
.bt:hover:not(:disabled){border-color:var(--ink);background:#FAFAF8}
.bt:disabled{color:var(--mut);cursor:default;background:#F2F2F0}
.bt.pri{background:var(--navy);border-color:var(--navy);color:#fff}
.bt.pri:hover:not(:disabled){background:var(--navy-2)}
.bt svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:2;
  stroke-linecap:round;stroke-linejoin:round}

/* ------------------------------------------------------------------ score */
.score{display:grid;grid-template-columns:repeat(5,1fr);gap:1px;background:var(--line);
  border:1px solid var(--line);margin:18px 0 20px}
.score>div{background:var(--card);padding:13px 15px}
.score .k{font:700 10.5px var(--ui);letter-spacing:.14em;text-transform:uppercase;
  color:var(--mut);margin-bottom:7px}
.score .v{font:600 25px/1 var(--mono);letter-spacing:-.03em;
  font-variant-numeric:tabular-nums}
.score .d{font-size:11.5px;color:var(--mut);margin-top:6px;line-height:1.4}
.score .bad .v{color:var(--red)}
.score .ok .v{color:var(--grn)}
.score .v small{font:600 13px var(--ui);color:var(--ink-2);margin-left:3px}

/* ------------------------------------------------------------------ cols */
.cols{display:grid;grid-template-columns:1fr 372px;gap:20px;align-items:start}
.cols>*{min-width:0}
.card{background:var(--card);border:1px solid var(--line)}
.card>h2{margin:0;padding:12px 16px;font-size:15px;font-weight:650;
  letter-spacing:-.015em;border-bottom:1px solid var(--line);
  display:flex;align-items:center;gap:10px}
.card>h2 .n{margin-left:auto;font:600 12px var(--mono);color:var(--mut)}
.card .cs{margin:0;padding:11px 16px;font-size:12.5px;color:var(--mut);
  line-height:1.55;border-bottom:1px solid var(--line)}

/* ------------------------------------------------------- the centre columns
   One cell per candidate. Nothing is summarised: the allocation is the
   picture. */
.halls{display:flex;gap:14px;padding:18px 16px 16px;overflow-x:auto;
  align-items:flex-end;min-height:290px}
.hall{flex:1;min-width:104px;display:flex;flex-direction:column;align-items:stretch}
.hall .stack{
  display:flex;flex-wrap:wrap-reverse;gap:2px;align-content:flex-start;
  border:1px solid var(--line-2);border-top:0;padding:4px;background:#FBFBFA;
  min-height:150px;position:relative;
}
.hall .cap{
  border-top:2px dashed var(--red);position:absolute;left:0;right:0;
  pointer-events:none;
}
.hall .cap span{
  position:absolute;right:3px;top:-16px;font:700 10.5px var(--ui);color:var(--red);
  background:var(--card);padding:0 3px;letter-spacing:.06em;
}
.seat{width:8px;height:8px;border-radius:1.5px;background:var(--navy);opacity:.85}
.seat.far{background:var(--amber)}
.seat.bad{background:var(--red)}
.seat.acc{background:var(--grn)}
.seat.new{animation:pop .3s ease-out}
@keyframes pop{from{transform:scale(.2);opacity:0}to{transform:scale(1);opacity:.85}}
.hall .lab{padding:7px 2px 0;text-align:center}
.hall .lab b{display:block;font-size:12.5px;font-weight:650;line-height:1.25}
.hall .lab span{display:block;font:600 11px var(--mono);color:var(--mut);margin-top:3px}
.hall .lab .over{color:var(--red)}

/* --------------------------------------------------------- the curve */
.curve{padding:14px 16px 6px}
.curve svg{display:block;width:100%;height:auto}
.cline{fill:none;stroke:var(--navy);stroke-width:2}
.carea{fill:var(--navy-soft)}
.cdot{fill:var(--navy)}
.cax{stroke:var(--line-2);stroke-width:1}
.ctx{font:600 10px var(--mono);fill:var(--mut)}

/* ------------------------------------------------------------- the rules */
.rule{padding:12px 16px;border-bottom:1px solid var(--line)}
.rule:last-child{border-bottom:0}
.rule .rh{display:flex;align-items:center;gap:10px;margin-bottom:5px}
.rule .rh b{font-size:13.5px;font-weight:650}
.rule .rh .st{
  margin-left:auto;font:700 10.5px var(--ui);letter-spacing:.09em;text-transform:uppercase;
  padding:3px 7px;border-radius:2px;border:1px solid;flex:none;
}
.st-ok{background:var(--grn-soft);border-color:#B6D5C5;color:var(--grn)}
.st-no{background:var(--red-soft);border-color:#E7BEBB;color:var(--red)}
.st-soft{background:var(--amber-soft);border-color:#E3CB9A;color:var(--amber)}
.rule p{margin:0;font-size:12px;color:var(--mut);line-height:1.5}
.rule .sw{
  display:inline-flex;align-items:center;gap:8px;margin-top:8px;cursor:pointer;
  background:none;border:0;padding:0;font-size:12px;color:var(--navy);font-weight:600;
}
.rule .sw .bx{width:30px;height:17px;border-radius:9px;background:var(--line-2);
  position:relative;transition:.15s}
.rule .sw .bx i{position:absolute;top:2px;left:2px;width:13px;height:13px;
  border-radius:50%;background:#fff;transition:transform .15s}
.rule .sw[aria-pressed=true] .bx{background:var(--navy)}
.rule .sw[aria-pressed=true] .bx i{transform:translateX(13px)}

/* ------------------------------------------------------------ violations */
.viol{margin:0;padding:0;list-style:none;max-height:300px;overflow-y:auto}
.viol li{padding:10px 16px;border-bottom:1px solid var(--line);font-size:12.5px;
  display:flex;gap:9px;align-items:baseline;line-height:1.45}
.viol li:last-child{border-bottom:0}
.viol .tag{font:700 10.5px var(--ui);letter-spacing:.09em;text-transform:uppercase;
  padding:2px 6px;border-radius:2px;flex:none;background:var(--red-soft);
  color:var(--red)}
.viol .tag.s{background:var(--amber-soft);color:var(--amber)}
.viol .none{color:var(--mut);padding:16px;text-align:center;display:block}

.legend{display:flex;flex-wrap:wrap;gap:9px 18px;padding:11px 16px;
  border-top:1px solid var(--line);font-size:11.5px;color:var(--mut)}
.legend span{display:inline-flex;align-items:center;gap:6px}
.legend i{width:9px;height:9px;border-radius:1.5px;flex:none}

.note{margin:18px 0 0;padding:13px 16px;background:var(--card);
  border:1px solid var(--line);border-left:3px solid var(--navy);font-size:12.5px;
  line-height:1.65;color:var(--ink-2)}
.note b{color:var(--ink)}

@media(max-width:1080px){.cols{grid-template-columns:1fr}
  .score{grid-template-columns:repeat(3,1fr)}}
@media(max-width:620px){
  .wrap{padding:18px 14px 44px}
  .score{grid-template-columns:1fr 1fr}
  .hd .acts{margin-left:0;width:100%}
  .halls{min-height:230px}
}
@media(prefers-reduced-motion:reduce){.seat.new{animation:none}}

/* ------------------------------------------------------- touch, on a phone */
@media(max-width:620px) and (pointer:coarse){
  .bt{min-height:44px}
  .rule .sw{min-height:44px}
}