/* Pallet Layout — drawing-office industrial sheet */

:root {
  --paper: #f2eee4;
  --paper-deep: #e9e3d3;
  --ink: #21201c;
  --ink-soft: #5d5a50;
  --line: #c9c2ae;
  --accent: #d95d10;        /* safety orange: overhang, warnings, actions */
  --accent-ink: #a34307;
  --kraft: #d8c29a;          /* pallet deck */
  --kraft-line: #b59b6e;
  --bundle-a: #76a3bd;       /* unrotated */
  --bundle-a-line: #3e7392;
  --bundle-b: #d9b35c;       /* rotated 90° */
  --bundle-b-line: #a8801f;
  --ok: #3c7a3e;
  --display: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; } /* display rules must never beat hidden */

body {
  margin: 0;
  font-family: var(--display);
  color: var(--ink);
  background:
    repeating-linear-gradient(0deg, transparent 0 23px, rgba(33,32,28,.045) 23px 24px),
    repeating-linear-gradient(90deg, transparent 0 23px, rgba(33,32,28,.045) 23px 24px),
    var(--paper);
  font-size: 14px;
  line-height: 1.35;
}

.mono { font-family: var(--mono); }
.dim { color: var(--ink-soft); font-size: 11px; }

#busy {
  position: fixed; top: 10px; right: 230px; z-index: 60;
  background: var(--accent); color: #fff;
  font-size: 11px; font-weight: 600; letter-spacing: .1em;
  padding: 5px 10px;
  animation: busy-pulse 1s ease-in-out infinite alternate;
}
@keyframes busy-pulse { from { opacity: 1; } to { opacity: .45; } }

/* ---------- title bar ---------- */

.titlebar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 20px;
  border-bottom: 3px solid var(--ink);
  background: var(--paper);
}
.brand { display: flex; align-items: baseline; gap: 12px; }
.brand-mark { font-size: 22px; color: var(--accent); }
.brand h1 {
  margin: 0;
  font-size: 24px; font-weight: 900;
  font-stretch: 110%;
  letter-spacing: .04em;
}
.brand-sub {
  font-family: var(--mono); font-size: 10.5px; color: var(--ink-soft);
  letter-spacing: .12em;
}
.titlebar-actions { display: flex; gap: 8px; }
.titlebar-actions button {
  font-family: var(--mono); font-size: 12px; font-weight: 600;
  letter-spacing: .06em;
  background: var(--ink); color: var(--paper);
  border: none; padding: 8px 14px; cursor: pointer;
}
.titlebar-actions button:hover { background: var(--accent); }

/* ---------- layout ---------- */

main {
  display: grid;
  grid-template-columns: 295px 1fr;
  gap: 16px;
  padding: 16px 20px 40px;
  max-width: 1500px;
}

.panel {
  background: var(--paper);
  border: 1.5px solid var(--ink);
  box-shadow: 4px 4px 0 rgba(33,32,28,.14);
}

/* ---------- inputs ---------- */

.inputs { padding: 4px 16px 16px; align-self: start; position: sticky; top: 14px; }
.inputs h2 {
  font-size: 11.5px; font-weight: 800; letter-spacing: .16em;
  border-bottom: 1.5px solid var(--ink);
  padding-bottom: 4px; margin: 18px 0 10px;
}
.grid3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 8px; }
.inputs label { display: block; font-size: 10.5px; font-weight: 600;
  letter-spacing: .07em; text-transform: uppercase; color: var(--ink-soft); }
.inputs label u { text-decoration: none; font-family: var(--mono); margin-left: 2px; }
.inputs input[type="number"], .inputs select {
  width: 100%; margin-top: 3px;
  font-family: var(--mono); font-size: 14px; font-weight: 500;
  border: 1.5px solid var(--ink); background: #fff;
  padding: 5px 6px; color: var(--ink);
}
.inputs select {
  appearance: none; -webkit-appearance: none; border-radius: 0;
  cursor: pointer;
  /* drawing-office caret to replace the native chrome */
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%2321201c'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 8px center;
  padding-right: 24px;
}
.inputs input[type="number"]:focus, .inputs select:focus {
  outline: 2px solid var(--accent); outline-offset: -1px;
}
.inputs label.single { margin-top: 4px; }
.inputs label.single input { width: 110px; display: inline-block; margin-left: 6px; }
.inputs label.single select { width: 160px; display: inline-block; margin-left: 6px; }
.inputs .check {
  margin-top: 10px; text-transform: none; font-size: 12px; font-weight: 600;
  color: var(--ink); display: flex; gap: 8px; align-items: flex-start;
}
.inputs .check small { display: block; font-weight: 400; color: var(--ink-soft); }
.inputs .check input { accent-color: var(--accent); margin-top: 2px; }
.derived { font-size: 11px; color: var(--ink-soft); margin: 8px 0 0; }

.pattern-picker { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.pattern-picker label { cursor: pointer; }
.pattern-picker input { position: absolute; opacity: 0; }
.pattern-picker span {
  display: block; text-align: center;
  font-size: 11px; font-weight: 800; letter-spacing: .1em;
  border: 1.5px solid var(--ink); padding: 7px 2px;
  background: var(--paper);
}
.pattern-picker input:checked + span { background: var(--ink); color: var(--paper); }
.pattern-picker label:hover span { border-color: var(--accent); color: var(--accent-ink); }
.pattern-picker input:checked:hover + span { color: var(--paper); }
.error { color: #b00020; font-size: 12px; margin-top: 12px; }

.instance-chip {
  display: flex; align-items: center; gap: 8px;
  margin-top: 8px; padding: 5px 8px;
  border: 1.5px dashed var(--accent-ink);
  background: #faecd9;
}
.instance-chip[hidden] { display: none; }
.instance-chip span { font-size: 11px; font-weight: 600; color: var(--accent-ink);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.instance-chip button {
  margin-left: auto; border: none; background: var(--accent-ink); color: #fff;
  font-family: var(--mono); font-size: 11px; padding: 2px 7px; cursor: pointer;
}
.instance-chip button:hover { background: var(--ink); }

/* ---------- results ---------- */

.results { display: flex; flex-direction: column; gap: 14px; min-width: 0; }

.strip {
  font-family: var(--mono); font-size: 12.5px;
  background: var(--ink); color: var(--paper);
  padding: 9px 14px; letter-spacing: .02em;
}
.strip b { color: #f0b27d; font-weight: 600; }

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(138px, 1fr));
  gap: 8px;
}
.stat {
  background: var(--paper); border: 1.5px solid var(--ink);
  padding: 8px 10px 6px;
  box-shadow: 3px 3px 0 rgba(33,32,28,.12);
  min-width: 0; /* let grid tracks shrink below content width */
  overflow: hidden;
}
.stat .k {
  font-size: 9.5px; font-weight: 800; letter-spacing: .14em;
  color: var(--ink-soft); text-transform: uppercase;
}
.stat .v {
  font-family: var(--mono); font-size: 21px; font-weight: 600; line-height: 1.2;
}
.stat .v small { font-size: 12px; font-weight: 400; color: var(--ink-soft); }
.stat .v .pair { font-size: 15px; }
.stat.hero { background: var(--ink); color: var(--paper); }
.stat.hero .k { color: #b7b1a0; }
.stat.hero .v { color: #fff; font-size: 30px; }
.stat.warn .v { color: var(--accent-ink); }

.note-box {
  border: 1.5px solid var(--accent-ink);
  background: #faecd9;
  padding: 10px 14px;
  font-size: 13px;
}
.note-box h3 { margin: 0 0 4px; font-size: 11px; letter-spacing: .12em; color: var(--accent-ink); }
.note-box p { margin: 2px 0; }

/* ---------- views ---------- */

.views {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: 14px;
  align-items: stretch;
}
.view-panel { display: flex; flex-direction: column; }
.view-head {
  display: flex; justify-content: space-between; align-items: center;
  border-bottom: 1.5px solid var(--ink);
  padding: 8px 12px;
}
.view-head h2 { margin: 0; font-size: 11.5px; font-weight: 800; letter-spacing: .16em; }
.layer-nav { display: flex; gap: 8px; align-items: center; font-size: 12px; }
.layer-nav button {
  font-family: var(--mono); background: none;
  border: 1.5px solid var(--ink); cursor: pointer; padding: 1px 8px; font-size: 12px;
}
.layer-nav button:hover { background: var(--accent); color: #fff; border-color: var(--accent); }
.layer-nav button:disabled { opacity: .3; cursor: default; }
#plan-svg-wrap { padding: 10px; }
#plan-svg-wrap svg { display: block; width: 100%; height: auto; }
#iso-wrap { flex: 1; min-height: 360px; position: relative; }
#iso-wrap canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }

/* ---------- ladders (overhang + weight) ---------- */

#ladder-panel h2, #wladder-panel h2 {
  margin: 0; padding: 8px 12px;
  font-size: 11.5px; font-weight: 800; letter-spacing: .16em;
  border-bottom: 1.5px solid var(--ink);
}
#ladder, #wladder { padding: 6px 12px 12px; }
#ladder table, #wladder table { width: 100%; border-collapse: collapse; font-size: 13px; }
#ladder th, #wladder th {
  font-size: 9.5px; letter-spacing: .14em; text-transform: uppercase;
  color: var(--ink-soft); text-align: left; padding: 8px 8px 4px;
  border-bottom: 1px solid var(--line);
}
#ladder td, #wladder td { font-family: var(--mono); padding: 7px 8px; border-bottom: 1px solid var(--line); }
#ladder td.gain, #wladder td.gain { color: var(--ok); font-weight: 600; }
#ladder td .pat, #wladder td .pat {
  font-family: var(--display); font-size: 10.5px; font-weight: 800;
  letter-spacing: .1em; text-transform: uppercase;
  border: 1px solid var(--ink); padding: 2px 6px;
}
#ladder button.apply, #wladder button.apply {
  font-family: var(--mono); font-size: 11.5px; font-weight: 600;
  background: var(--accent); border: none; color: #fff;
  padding: 5px 12px; cursor: pointer; letter-spacing: .04em;
}
#ladder button.apply:hover, #wladder button.apply:hover { background: var(--accent-ink); }
#ladder .ladder-note, #wladder .ladder-note { font-size: 12px; color: var(--ink-soft); margin: 8px 0 0; }

/* ---------- pattern catalogue modal ---------- */

.modal-backdrop {
  position: fixed; inset: 0; z-index: 50;
  background: rgba(33, 32, 28, .55);
  display: flex; align-items: center; justify-content: center;
  padding: 24px;
}
.modal-backdrop[hidden] { display: none; }
.modal {
  background: var(--paper);
  border: 2px solid var(--ink);
  box-shadow: 8px 8px 0 rgba(33,32,28,.3);
  width: min(1240px, 96vw);
  max-height: 90vh;
  display: flex; flex-direction: column;
}
.modal-head {
  display: flex; justify-content: space-between; align-items: center;
  border-bottom: 2px solid var(--ink);
  padding: 10px 16px;
}
.modal-head h2 { margin: 0; font-size: 12.5px; font-weight: 800; letter-spacing: .14em; }
.modal-head button {
  font-family: var(--mono); font-size: 12px; font-weight: 600;
  background: var(--ink); color: var(--paper); border: none;
  padding: 6px 12px; cursor: pointer;
}
.modal-head button:hover { background: var(--accent); }
.modal-body { overflow-y: auto; padding: 6px 16px 20px; }
.modal-narrow { width: min(620px, 94vw); }
#finishing-body { position: static; align-self: auto; }
#btn-finishing {
  width: 100%; margin-top: 2px; padding: 8px 10px;
  font-family: var(--mono); font-size: 12px; font-weight: 600;
  letter-spacing: .06em; cursor: pointer;
  background: none; border: 1.5px solid var(--ink); color: var(--ink);
}
#btn-finishing:hover { background: var(--accent); border-color: var(--accent); color: #fff; }
.modal-body h3 {
  font-size: 11px; font-weight: 800; letter-spacing: .16em;
  border-bottom: 1.5px solid var(--ink);
  padding-bottom: 4px; margin: 18px 0 10px;
}
.cat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(168px, 1fr));
  gap: 10px;
}
.cat-card {
  border: 1.5px solid var(--ink);
  background: #fff;
  padding: 7px 8px 8px;
  cursor: default;
  box-shadow: 2px 2px 0 rgba(33,32,28,.12);
}
.cat-card.selectable { cursor: pointer; }
.cat-card.selectable:hover { border-color: var(--accent); box-shadow: 3px 3px 0 var(--accent); }
.cat-card button.cycle {
  font-family: var(--mono); font-size: 9.5px; border: 1px solid var(--ink);
  background: var(--paper); cursor: pointer; padding: 0 4px; margin-left: 4px;
}
.cat-card button.cycle:hover { background: var(--ink); color: var(--paper); }
.cat-card .cat-name {
  font-family: var(--mono); font-size: 10.5px; font-weight: 600;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.cat-card .cat-sub {
  font-family: var(--mono); font-size: 10px; color: var(--ink-soft);
  margin-bottom: 5px;
}
.cat-card svg { display: block; width: 100%; height: auto; }
.cat-card.over { background: #f6f1e6; border-style: dashed; }
.cat-card.over .cat-name { color: var(--accent-ink); }
.cat-card.over .cat-sub { color: var(--accent-ink); }
.cat-card.over svg { opacity: .7; }
.cat-card.dead { background: #f5efe2; }
.cat-card.dead .cat-note { font-size: 10.5px; color: var(--accent-ink); margin: 6px 0 0; }

/* ---------- print sheet ---------- */

.print-block { display: none; }

@media print {
  body { background: #fff; font-size: 12px; }
  .titlebar-actions, .inputs, #iso-panel, #ladder button.apply,
  #wladder button.apply, .layer-nav button,
  .modal-backdrop { display: none !important; }
  main { display: block; padding: 0 6mm; max-width: none; }
  .panel, .stat { box-shadow: none; }
  .views { display: block; }
  .titlebar { border-bottom-width: 2px; padding: 4mm 6mm; }
  .results { gap: 8px; }
  #ladder-panel, #wladder-panel { break-inside: avoid; }
  .print-block {
    display: block;
    margin: 6mm; padding: 0;
    border: 2px solid var(--ink);
  }
  .print-block table { width: 100%; border-collapse: collapse; font-family: var(--mono); font-size: 10.5px; }
  .print-block td {
    border: 1px solid var(--ink); padding: 2.5mm 3mm; vertical-align: top;
  }
  .print-block .k {
    display: block; font-family: var(--display); font-size: 8px;
    font-weight: 800; letter-spacing: .14em; color: var(--ink-soft);
  }
}

@media (max-width: 1100px) {
  main { grid-template-columns: 1fr; }
  .inputs { position: static; }
  .views { grid-template-columns: 1fr; }
}