/* ============================================================
   Summer Math Worksheet Generator — styles
   Screen UI + print rules tuned for 8.5x11 US Letter
   ============================================================ */
:root{
  --bg:#f4f6fb; --panel:#fff; --ink:#1f2733; --muted:#6b7280;
  --line:#d7dce5; --accent:#2563eb; --accent-d:#1d4ed8; --soft:#eef2ff;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:"Segoe UI",system-ui,-apple-system,Helvetica,Arial,sans-serif;
  background:var(--bg); color:var(--ink);
}
.app{display:flex; min-height:100vh; align-items:flex-start}

/* ---------- Control panel ---------- */
.controls{
  width:320px; flex:0 0 320px; padding:20px; background:var(--panel);
  border-right:1px solid var(--line); position:sticky; top:0;
  height:100vh; overflow-y:auto;
}
.controls h1{font-size:20px; margin:0}
.controls .sub{margin:2px 0 18px; color:var(--muted); font-size:13px}
.field{display:flex; flex-direction:column; gap:4px; margin-bottom:14px; font-size:13px}
.field > span{font-weight:600; color:#374151}
.field select,.field input[type=text],.field input[type=number]{
  padding:8px 10px; border:1px solid var(--line); border-radius:8px;
  font-size:14px; background:#fff; color:var(--ink);
}
.field small{color:var(--muted); font-size:11px}
.row{display:flex; gap:10px}
.row .field{flex:1}
.field.grow{flex:2}
.field.check{flex:0 0 auto; align-items:flex-start}
.field.check input{width:20px; height:20px; margin-top:4px}
.subfield{display:flex; flex-direction:column; gap:4px; margin:10px 0 0; font-size:12px}
.subfield.check2{flex-direction:row; align-items:center; gap:8px}
details summary{cursor:pointer; font-weight:600; color:#374151; font-size:13px}
details{border:1px dashed var(--line); border-radius:8px; padding:10px}
.actions{display:flex; gap:10px; margin-top:6px}
button{
  flex:1; padding:10px 12px; border:1px solid var(--line); border-radius:8px;
  background:#fff; font-size:14px; cursor:pointer; font-weight:600; color:var(--ink);
}
button:hover{background:var(--soft)}
button.primary{background:var(--accent); border-color:var(--accent); color:#fff}
button.primary:hover{background:var(--accent-d)}
.seedinfo{font-size:12px; color:var(--muted); margin:10px 0 0; min-height:16px}
.tip{font-size:11px; color:var(--muted); margin-top:14px; line-height:1.4}

/* ---------- Page / sheet ---------- */
.page-wrap{flex:1; padding:24px; display:flex; justify-content:center}
.sheet{
  background:#fff; width:8.5in; min-height:11in; padding:0.5in;
  box-shadow:0 2px 14px rgba(0,0,0,.12); border-radius:2px;
}

/* worksheet header */
.ws-head{border-bottom:2px solid var(--ink); padding-bottom:8px; margin-bottom:14px}
.ws-title{font-size:22px; font-weight:800; margin:0}
.ws-meta{display:flex; justify-content:space-between; font-size:13px; color:#374151; margin-top:8px}
.ws-meta .line{border-bottom:1px solid var(--ink); min-width:160px; display:inline-block}
.ws-sub{font-size:12px; color:var(--muted); margin-top:4px}
.key-badge{display:inline-block; background:#fde68a; color:#92400e; font-size:11px;
  font-weight:700; padding:2px 8px; border-radius:6px; margin-left:8px; vertical-align:middle}

/* ---------- Arithmetic grid ---------- */
.grid{display:grid; gap:6px 14px}
.prob{
  border:1px solid var(--line); border-radius:6px; padding:8px 6px;
  display:flex; flex-direction:column; align-items:flex-end; justify-content:center;
}
.prob .pnum{align-self:flex-start; font-size:10px; color:var(--muted); line-height:1}
.prob .stack{font-variant-numeric:tabular-nums; font-size:18px; text-align:right; line-height:1.25}
.prob .op-row{display:flex; gap:6px; justify-content:flex-end}
.prob .op{color:#374151}
.prob .rule{border-bottom:2px solid var(--ink); width:100%; margin-top:2px}
.prob .ans{height:22px; width:100%; text-align:right; color:var(--accent); font-weight:700; font-size:18px}

/* inline (horizontal) problems: comparison, etc. */
.inline-grid{display:grid; gap:10px 16px}
.inline-prob{display:flex; align-items:center; gap:8px; font-size:18px; border:1px solid var(--line);
  border-radius:6px; padding:8px 10px; font-variant-numeric:tabular-nums}
.inline-prob .pnum{font-size:10px; color:var(--muted); width:18px; flex:0 0 18px}
.inline-prob .box{border:1.5px solid var(--ink); width:34px; height:30px; border-radius:5px;
  display:inline-flex; align-items:center; justify-content:center; color:var(--accent); font-weight:700}

/* ---------- Word / applied blocks ---------- */
.block-grid{display:grid; gap:12px}
.block{border:1px solid var(--line); border-radius:8px; padding:10px 12px; font-size:14px; line-height:1.4}
.block .pnum{font-weight:700; color:var(--muted); margin-right:6px}
.block .work{margin-top:10px; border-top:1px dashed var(--line); padding-top:6px;
  font-size:12px; color:var(--muted)}
.block .ans{color:var(--accent); font-weight:700}

/* ---------- Clocks ---------- */
.clock-grid{display:grid; gap:14px 14px}
.clock-cell{border:1px solid var(--line); border-radius:8px; padding:8px; text-align:center}
.clock-cell svg{width:100%; height:auto; max-width:120px}
.clock-cell .write{margin-top:6px; font-size:13px}
.clock-cell .blank{border-bottom:1.5px solid var(--ink); display:inline-block; min-width:70px; height:18px}
.clock-cell .ans{color:var(--accent); font-weight:700}

/* ---------- Coins (currency) ---------- */
.coin-note{font-size:12px; color:var(--muted)}
.coin-tray{display:flex; flex-wrap:wrap; gap:6px; align-items:center; margin:8px 0; padding:6px;
  border:1px dashed var(--line); border-radius:8px; min-height:60px}
.coin,.bill{flex:0 0 auto}

/* ---------- counting (K-1) ---------- */
.count-grid{display:grid; gap:10px 12px}
.count-cell{border:1px solid var(--line); border-radius:8px; padding:8px}
.count-cell .pnum{font-size:10px; color:var(--muted)}
.count-tray{display:flex; flex-wrap:wrap; gap:5px; margin:6px 0; padding:6px;
  border:1px dashed var(--line); border-radius:6px; min-height:34px}
.count-q{font-size:13px; font-weight:600}
.count-q .cbox{display:inline-block; border:1.5px solid var(--ink); width:42px; height:24px;
  border-radius:5px; vertical-align:middle}

/* ---------- mixed review ---------- */
.mixed-wrap{display:flex; flex-direction:column; gap:14px}
.mixed-section{border:1px solid var(--line); border-radius:8px; padding:8px 10px 10px}
.mixed-sec-head{font-size:13px; font-weight:800; color:var(--accent); text-transform:uppercase;
  letter-spacing:.03em; margin-bottom:8px; padding-bottom:4px; border-bottom:1.5px solid var(--soft)}

/* ---------- shared answer color & blanks ---------- */
.ansblue{color:var(--accent)}
.blank{border-bottom:1.5px solid var(--ink); display:inline-block; min-width:54px; height:16px; vertical-align:middle}
.blank.wide{min-width:90px}
.inline-prob .box.wide{width:90px}

/* ---------- long division ---------- */
.prob.ld{align-items:center}
.divhouse{display:flex; align-items:flex-start; font-variant-numeric:tabular-nums; font-size:18px; margin-top:6px}
.divhouse .divisor{padding:4px 6px 0 0}
.divhouse .house{border-top:2px solid var(--ink); border-left:2px solid var(--ink);
  border-top-left-radius:8px; padding:4px 10px 14px 8px; position:relative}
.divhouse .ld-ans{position:absolute; top:-20px; left:8px; color:var(--accent); font-weight:700}
.divhouse .dividend{display:inline-block}

/* ---------- fractions ---------- */
.frac-grid{display:grid; gap:10px 14px}
.frac-cell{border:1px solid var(--line); border-radius:8px; padding:8px; min-height:70px}
.frac-cell .pnum{font-size:10px; color:var(--muted)}
.frac-body{display:flex; flex-direction:column; align-items:center; justify-content:center; gap:6px; margin-top:4px}
.frow{display:flex; align-items:center; gap:8px; font-size:20px; font-variant-numeric:tabular-nums}
.frac{display:inline-flex; flex-direction:column; align-items:center; line-height:1; vertical-align:middle}
.frac .fn{padding:0 4px}
.frac .fd{padding:0 4px; border-top:2px solid var(--ink)}
.frac .blankbox{min-width:20px; border-bottom:1.5px solid var(--accent)}
.fop,.feq{font-size:18px}
.fbar{width:160px; height:30px}
.fq{font-size:12px; text-align:center}

/* ---------- patterns / io tables ---------- */
.iotable{border-collapse:collapse; margin-top:4px; width:100%}
.iotable th,.iotable td{border:1px solid var(--line); padding:4px 6px; text-align:center; font-size:14px;
  font-variant-numeric:tabular-nums}
.iotable th{background:var(--soft); width:36px}

/* ---------- geometry ---------- */
.geo-grid{display:grid; gap:12px}
.geo-cell{border:1px solid var(--line); border-radius:8px; padding:8px; text-align:center}
.geo-cell .pnum{font-size:10px; color:var(--muted); display:block; text-align:left}
.shp{width:100%; max-width:150px; height:auto}
.geo-q{font-size:12px; margin-top:4px; font-weight:600}

/* ---------- vocab match ---------- */
.match-wrap .instr{font-size:13px; color:#374151; margin:0 0 10px}
.match-cols{display:flex; gap:28px}
.match-col{flex:1}
.match-col h3{font-size:14px; margin:0 0 8px; border-bottom:1px solid var(--line); padding-bottom:4px}
.match-row{font-size:14px; padding:6px 0; display:flex; align-items:center; gap:8px}
.match-box{display:inline-block; border:1.5px solid var(--ink); width:28px; height:24px; border-radius:5px;
  text-align:center; color:var(--accent); font-weight:700; flex:0 0 28px}

/* ---------- word search ---------- */
.wsgrid{border-collapse:collapse; margin:0 auto}
.wsgrid td{border:1px solid #e5e7eb; width:24px; height:24px; text-align:center; font-size:13px;
  font-family:"Courier New",monospace; font-weight:600}
.wsgrid td.wshit{background:#bfdbfe; color:#1d4ed8}
.wslist{margin-top:14px}
.wslist h3{font-size:14px; margin:0 0 6px}
.wswords{display:flex; flex-wrap:wrap; gap:6px 16px}
.wswords span{font-size:13px; font-family:"Courier New",monospace; border:1px solid var(--line);
  border-radius:5px; padding:2px 8px}

/* ---------- reading passage ---------- */
.passage-title{font-size:18px; margin:0 0 8px}
.passage-text{font-size:14px; line-height:1.6; text-align:justify; border-left:3px solid var(--soft);
  padding:4px 0 4px 12px; margin-bottom:14px}
.passage-q{font-size:14px; line-height:1.5; padding-left:20px}
.passage-q li{margin-bottom:10px}
.qa{margin-top:4px}
.qa .ansline{display:block; border-bottom:1px solid var(--ink); height:16px; margin:5px 0}
.qa .ans{color:var(--accent); font-weight:600}

/* ============================================================
   PRINT RULES — 8.5x11 Letter, 0.5in margin
   ============================================================ */
@page{ size:Letter; margin:0.5in; }
@media print{
  body{background:#fff}
  .no-print{display:none !important}
  .app{display:block}
  .page-wrap{padding:0; display:block}
  .sheet{
    width:auto; min-height:auto; padding:0; box-shadow:none; border-radius:0;
  }
  .prob,.inline-prob,.block,.clock-cell,.frac-cell,.geo-cell,.match-row,.passage-q li,.count-cell,.mixed-section{break-inside:avoid}
  .ans{color:#000 !important}
  .inline-prob .box{color:#000 !important}
  /* keep shaded fills visible when printing (fraction bars, word-search hits) */
  .key-badge,.fbar rect,.wsgrid td.wshit,.iotable th,.match-box,
  .shp *,.count-tray svg *,
  .coin circle,.coin text,.bill rect,.bill circle,.bill text{
    -webkit-print-color-adjust:exact; print-color-adjust:exact}
  .wsgrid td{border-color:#999}
}