/* Metre2 Drainage Design - the Openspace "serious app" workspace (signed off by Rob, 6 Nov 2026).
   Light blueprint paper by default, deep navy blueprint in dark. Inter for the interface, JetBrains Mono for numbers,
   levels and the small uppercase labels - both bundled (fonts/, SIL OFL). Tokens match Map 2.1 / Mail 1.2. */
@font-face { font-family: 'Inter'; src: url('../fonts/inter-var.woff2') format('woff2'); font-weight: 100 900; font-display: swap; }
@font-face { font-family: 'JetBrains Mono'; src: url('../fonts/jetbrains-mono-var.woff2') format('woff2'); font-weight: 100 800; font-display: swap; }

:root {
  --bg: #f3f6fb; --panel: #ffffff; --panel2: #f7f9fd; --tint: #eaf0fa; --hover: rgba(29,95,224,.06); --sel: rgba(29,95,224,.12);
  --line: rgba(29,95,224,.13); --line2: rgba(29,95,224,.24); --tx: #0b1b33; --tx2: #42566f; --tx3: #5a6b84;
  --ink: #1d5fe0; --ink2: #123f9e; --on: #ffffff; --amber: #c2410c; --ok: #0b7a51; --warn: #a14a07; --bad: #c02a26;
  --okbg: #e3f3ec; --warnbg: #fdf0e3; --badbg: #fdeceb; --plan: #fbfcfe; --site: #9aa8b8; --site2: #c9d3de; --grid: rgba(29,95,224,.07);
  --sw: #1d5fe0; --foul: #c2410c; --glow: 0 6px 18px -8px rgba(29,95,224,.55); --shadow: 0 28px 70px -24px rgba(20,50,110,.38);
  --ui: 'Inter', 'Segoe UI', system-ui, sans-serif; --mono: 'JetBrains Mono', 'Cascadia Mono', Consolas, ui-monospace, monospace;
  color-scheme: light;
}
html.dark {
  --bg: #050d18; --panel: #0b1524; --panel2: #0e1a2c; --tint: #101d31; --hover: rgba(90,209,255,.07); --sel: rgba(90,209,255,.14);
  --line: rgba(120,180,255,.12); --line2: rgba(120,180,255,.24); --tx: #eaf2ff; --tx2: #a6b6cc; --tx3: #8a9cb5;
  --ink: #5ad1ff; --ink2: #8ee0ff; --on: #04101e; --amber: #ff9a3d; --ok: #4ade80; --warn: #fbbf24; --bad: #ff7b86;
  --okbg: rgba(74,222,128,.12); --warnbg: rgba(251,191,36,.12); --badbg: rgba(255,123,134,.13); --plan: #07111f; --site: #4d6380; --site2: #2a3a52;
  --grid: rgba(90,170,255,.06); --sw: #5ad1ff; --foul: #ff9a3d; --glow: 0 0 22px -6px rgba(90,209,255,.55); --shadow: 0 30px 80px -24px rgba(0,0,0,.85);
  color-scheme: dark;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: var(--bg); color: var(--tx); font: 12px/1.35 var(--ui); letter-spacing: -.003em; overflow: hidden; }
button, input, select, textarea { font: inherit; color: inherit; }
.mono { font-family: var(--mono); }
.lbl { font: 600 9.5px var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--tx3); }
.hidden { display: none !important; }
:focus-visible { outline: 2px solid var(--ink); outline-offset: 1px; }

#app { height: 100vh; display: flex; flex-direction: column; }
/* menu strip */
.menubar { height: 30px; flex: none; display: flex; align-items: center; gap: 8px; padding: 0 8px; background: var(--panel); border-bottom: 1px solid var(--line); }
.menubar .brand { display: flex; align-items: center; gap: 7px; font-weight: 650; font-size: 13px; }
.menubar .menu { display: flex; }
.menubar .menu button { height: 24px; padding: 0 8px; border: 0; border-radius: 6px; background: transparent; color: var(--tx2); cursor: pointer; }
.menubar .menu button:hover { background: var(--hover); color: var(--tx); }
.menubar .title { flex: 1; text-align: center; color: var(--tx2); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.menubar .title b { color: var(--tx); font-weight: 600; }
.menubar .dirty { color: var(--amber); }
#proPill { margin-left: 4px; }
.pro-mark { padding: 2px 8px; border-radius: 999px; background: linear-gradient(135deg, #ffe08a, #ffbf3c); color: #7a4a00; font: 700 9px var(--mono); letter-spacing: .08em; }
/* ribbon */
.ribbon { flex: none; background: var(--panel); border-bottom: 1px solid var(--line2); }
.ribbon .tabs { display: flex; gap: 2px; padding: 4px 8px 0; }
.ribbon .tabs button { height: 26px; padding: 0 12px; border: 0; border-radius: 7px 7px 0 0; background: transparent; color: var(--tx2); cursor: pointer; font-weight: 500; }
.ribbon .tabs button[aria-selected=true] { background: var(--sel); color: var(--ink2); font-weight: 600; box-shadow: inset 0 -2px 0 var(--ink); }
.ribbon .body { height: 78px; display: flex; align-items: stretch; padding: 4px 6px; border-top: 1px solid var(--line); overflow-x: auto; overflow-y: hidden; }
.rgroup { display: flex; flex-direction: column; padding: 0 6px; border-right: 1px solid var(--line); }
.rgroup .cmds { flex: 1; display: flex; gap: 2px; align-items: flex-start; }
.rgroup .gname { text-align: center; font: 600 8.5px var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--tx3); padding-top: 1px; white-space: nowrap; }
.rcmd { width: 60px; min-height: 52px; padding: 4px 2px 2px; border: 0; border-radius: 7px; display: flex; flex-direction: column; align-items: center; gap: 3px; background: transparent; cursor: pointer; color: var(--tx2); }
.rcmd:hover { background: var(--hover); }
.rcmd[aria-pressed=true] { background: var(--sel); color: var(--ink2); }
.rcmd svg { width: 22px; height: 22px; stroke: currentColor; fill: none; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.rcmd.hot svg { stroke: var(--ink); }
.rcmd span { font-size: 11px; line-height: 1.15; text-align: center; }
.rcmd:disabled { opacity: .45; cursor: default; }
.ribbon .run { margin-left: auto; display: flex; flex-direction: column; justify-content: center; gap: 6px; padding: 0 8px; }
.btn { height: 30px; padding: 0 12px; border: 1px solid var(--line2); border-radius: 8px; background: var(--panel); color: var(--tx2); cursor: pointer; font-weight: 500; }
.btn:hover { border-color: var(--ink); color: var(--tx); }
.btn.primary { border: 0; background: var(--ink); color: var(--on); font-weight: 600; box-shadow: var(--glow); }
.btn.primary:disabled { opacity: .6; }
.btn.small { height: 24px; padding: 0 8px; font-size: 11.5px; border-radius: 6px; }
select.ctl, input.ctl { height: 26px; padding: 0 6px; border: 1px solid var(--line2); border-radius: 7px; background: var(--panel); color: var(--tx); }
/* main area */
.main { flex: 1; min-height: 0; display: flex; }
.side { background: var(--panel); display: flex; flex-direction: column; min-height: 0; }
.side.left { width: 236px; flex: none; border-right: 1px solid var(--line2); }
.side.right { width: 300px; flex: none; border-left: 1px solid var(--line2); }
.phead { height: 28px; flex: none; display: flex; align-items: center; gap: 8px; padding: 0 10px; border-bottom: 1px solid var(--line); }
.phead .sp { flex: 1; }
.scroll { flex: 1; overflow: auto; min-height: 0; }
.tree button { width: 100%; height: 24px; display: flex; align-items: center; gap: 6px; border: 0; background: transparent; cursor: pointer; color: var(--tx); text-align: left; padding-right: 8px; }
.tree button:hover { background: var(--hover); }
.tree button.on { background: var(--sel); box-shadow: inset 2px 0 0 var(--ink); }
.tree .caret { width: 10px; color: var(--tx3); font-size: 9px; }
.tree .nm { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tree .meta { color: var(--tx3); font: 10.5px var(--mono); }
.dot { width: 7px; height: 7px; border-radius: 50%; flex: none; }
.swatch { width: 10px; height: 3px; flex: none; }
.centre { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.vtabs { height: 28px; flex: none; display: flex; align-items: center; gap: 2px; padding: 0 6px; background: var(--panel2); border-bottom: 1px solid var(--line); }
.vtabs button { height: 22px; padding: 0 10px; border: 0; border-radius: 6px; background: transparent; color: var(--tx2); cursor: pointer; font-weight: 500; }
.vtabs button[aria-selected=true] { background: var(--sel); color: var(--ink2); font-weight: 600; }
.vtabs .note { margin-left: auto; color: var(--tx3); font: 10.5px var(--mono); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.view { flex: 1; min-height: 0; position: relative; background: var(--plan); overflow: hidden; }
.view svg.canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; user-select: none; }
.view.tool-pipe svg.canvas, .view.tool-mh svg.canvas, .view.tool-outfall svg.canvas, .view.tool-storage svg.canvas { cursor: crosshair; }
.view.panning svg.canvas { cursor: grabbing; }
.navbtns { position: absolute; right: 10px; top: 10px; display: flex; flex-direction: column; gap: 2px; padding: 3px; background: var(--panel); border: 1px solid var(--line2); border-radius: 8px; }
.navbtns button { width: 28px; height: 28px; border: 0; border-radius: 6px; background: transparent; display: flex; align-items: center; justify-content: center; cursor: pointer; color: var(--tx2); }
.navbtns button:hover { background: var(--hover); }
.navbtns svg { width: 16px; height: 16px; stroke: currentColor; fill: none; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.hint { position: absolute; left: 10px; bottom: 34px; padding: 3px 8px; background: var(--panel); border: 1px solid var(--line); border-radius: 6px; color: var(--tx3); font-size: 11px; max-width: calc(100% - 140px); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; pointer-events: none; }
.empty { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; color: var(--tx3); }
/* svg plan styling */
.canvas .lnk { cursor: pointer; }
.canvas .tag rect { fill: var(--panel); stroke: var(--line2); stroke-width: .8; }
.canvas text { font-family: var(--mono); }
/* docked grid */
.dock { height: 250px; flex: none; display: flex; flex-direction: column; background: var(--panel); border-top: 1px solid var(--line2); }
.dock .resize { height: 5px; margin-top: -3px; cursor: ns-resize; }
.grid { width: 100%; border-collapse: collapse; font-size: 11.5px; }
.grid th { position: sticky; top: 0; z-index: 1; background: var(--tint); padding: 5px 8px; text-align: left; font: 600 9.5px var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--tx2); border-bottom: 1px solid var(--line2); white-space: nowrap; }
.grid th.n, .grid td.n { text-align: right; }
.grid td { padding: 4px 8px; border-bottom: 1px solid var(--line); white-space: nowrap; font-family: var(--mono); }
.grid td.t { font-family: var(--ui); }
.grid tr { cursor: pointer; }
.grid tr:hover td { background: var(--hover); }
.grid tr.on td { background: var(--sel); }
.grid td.bad { color: var(--bad); background: var(--badbg); }
.grid td.warn { color: var(--warn); background: var(--warnbg); }
.grid td.ok { color: var(--ok); }
.grid td.strip { width: 6px; padding: 0; }
.sev { display: inline-block; padding: 1px 7px; border-radius: 999px; font: 700 10.5px var(--ui); }
.sev.fail { color: var(--bad); background: var(--badbg); } .sev.warn { color: var(--warn); background: var(--warnbg); } .sev.pass { color: var(--ok); background: var(--okbg); }
/* properties */
.pgroup .gh { height: 24px; display: flex; align-items: center; padding: 0 10px; background: var(--tint); border-bottom: 1px solid var(--line); }
.prow { display: grid; grid-template-columns: 118px minmax(0, 1fr); min-height: 26px; border-bottom: 1px solid var(--line); }
.prow > label, .prow > span.k { padding: 5px 10px; color: var(--tx2); border-right: 1px solid var(--line); }
.prow > .v { padding: 2px 6px; display: flex; align-items: center; font-family: var(--mono); min-width: 0; }
.prow > .v input, .prow > .v select { width: 100%; height: 22px; border: 1px solid transparent; border-radius: 5px; background: transparent; padding: 0 4px; font-family: var(--mono); }
.prow > .v input:hover, .prow > .v select:hover { border-color: var(--line2); }
.prow > .v input:focus, .prow > .v select:focus { border-color: var(--ink); background: var(--panel); outline: none; }
.prow > .v.bad { color: var(--bad); background: var(--badbg); } .prow > .v.warn { color: var(--warn); background: var(--warnbg); } .prow > .v.ok { color: var(--ok); }
.pactions { padding: 10px; display: flex; flex-direction: column; gap: 6px; }
.detail { padding: 12px; display: flex; flex-direction: column; gap: 10px; }
.detail h3 { margin: 0; font-size: 14px; font-weight: 650; letter-spacing: -.01em; }
.detail p { margin: 0; color: var(--tx2); line-height: 1.5; }
.fixbox { border: 1px dashed var(--ink); border-radius: 8px; padding: 10px; display: flex; flex-direction: column; gap: 6px; background: var(--hover); }
.kv { display: grid; grid-template-columns: 90px minmax(0, 1fr); border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.kv span { padding: 6px 8px; } .kv span:nth-child(odd) { background: var(--tint); color: var(--tx2); } .kv span:nth-child(n+3) { border-top: 1px solid var(--line); }
/* status bar */
.status { height: 24px; flex: none; display: flex; align-items: center; gap: 14px; padding: 0 10px; background: var(--panel); border-top: 1px solid var(--line2); font: 10.5px var(--mono); color: var(--tx2); white-space: nowrap; overflow: hidden; }
.status .sp { flex: 1; }
.status b { color: var(--ink); font-weight: 600; }
.status .ok { color: var(--ok); } .status .bad { color: var(--bad); } .status .warn { color: var(--warn); }
/* progress + toast */
.progress { position: absolute; left: 50%; top: 14px; transform: translateX(-50%); min-width: 320px; padding: 10px 14px; background: var(--panel); border: 1px solid var(--line2); border-radius: 12px; box-shadow: var(--shadow); display: flex; flex-direction: column; gap: 6px; z-index: 5; }
.progress .bar { height: 6px; border-radius: 3px; background: var(--tint); overflow: hidden; } .progress .bar span { display: block; height: 100%; background: var(--ink); width: 0; transition: width .15s; }
.toast { position: fixed; left: 50%; bottom: 40px; transform: translateX(-50%); padding: 9px 14px; border-radius: 10px; background: var(--tx); color: var(--bg); box-shadow: var(--shadow); z-index: 50; max-width: 70vw; }
/* modal */
.modal-bg { position: fixed; inset: 0; background: rgba(8,20,40,.38); display: flex; align-items: center; justify-content: center; z-index: 40; }
html.dark .modal-bg { background: rgba(0,0,0,.55); }
.modal { width: 560px; max-width: 92vw; max-height: 86vh; overflow: auto; background: var(--panel); border: 1px solid var(--line2); border-radius: 16px; box-shadow: var(--shadow); padding: 18px; display: flex; flex-direction: column; gap: 12px; }
.modal h2 { margin: 0; font-size: 16px; font-weight: 650; letter-spacing: -.015em; }
.modal .row { display: flex; gap: 8px; justify-content: flex-end; }
.modal textarea { width: 100%; min-height: 160px; border: 1px solid var(--line2); border-radius: 8px; background: var(--panel2); padding: 8px; font-family: var(--mono); font-size: 11px; }

/* start screen */
.starts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.startcard { display: flex; flex-direction: column; gap: 6px; text-align: left; padding: 14px; border: 1px solid var(--line2); border-radius: 10px; background: var(--panel); color: var(--tx); cursor: pointer; font: inherit; }
.startcard:hover { border-color: var(--ink); background: var(--sel); }
.startcard span { color: var(--tx2); font-size: 12px; line-height: 1.45; }
input.rate { width: 90px; text-align: right; font: inherit; padding: 2px 4px; border: 1px solid var(--line2); border-radius: 4px; background: var(--plan); color: var(--tx); }
/* calculation pack (print only) */
#printHost { display: none; }
@media print {
  html, body { height: auto !important; overflow: visible !important; display: block !important; background: #fff !important; }
  body > *:not(#printHost) { display: none !important; }
  #printHost { display: block; color: #000; background: #fff; font: 9.5pt/1.4 Inter, system-ui, sans-serif; }
  .pack h1 { font-size: 22pt; margin: 6mm 0 2mm; } .pack h2 { font-size: 12pt; margin: 7mm 0 2mm; border-bottom: 1px solid #0b1b33; padding-bottom: 1mm; break-after: avoid; }
  .pack .brand { color: #1d5fe0; font-weight: 700; letter-spacing: .04em; } .pack .sub { color: #444; margin-bottom: 6mm; }
  .pack .cover { break-after: page; } .pack .note { color: #444; font-size: 8.5pt; margin-top: 8mm; }
  .pack table { width: 100%; border-collapse: collapse; margin: 2mm 0; font-size: 8pt; } .pack th, .pack td { border-bottom: .3pt solid #bbb; padding: 1.2mm 1.5mm; text-align: left; vertical-align: top; }
  .pack th { background: #eef2f8; font-weight: 600; } .pack .n { text-align: right; font-variant-numeric: tabular-nums; } .pack tr { break-inside: avoid; }
  .pack table.pk td:first-child { width: 45mm; color: #444; } .pack b.fail { color: #c02a26; } .pack b.warn { color: #a14a07; } .pack b.pass { color: #0b7a51; }
  .pack .fig { break-inside: avoid; border: .3pt solid #bbb; } .pack .fig svg { display: block; width: 100%; height: auto; }
  @page { size: A4 landscape; margin: 12mm; }
}

.legend { position: absolute; left: 10px; top: 10px; max-width: 250px; padding: 8px 10px; background: var(--panel); border: 1px solid var(--line2); border-radius: 8px; display: flex; flex-direction: column; gap: 3px; font-size: 11px; color: var(--tx); pointer-events: none; }
.legend span { display: flex; align-items: center; gap: 6px; } .legend i { width: 14px; height: 10px; border-radius: 2px; display: inline-block; }
/* narrower screens (1366-1600 px laptops): tighter ribbon, short run button */
@media (max-width: 1700px) { .rcmd { width: 53px; } .rcmd span { font-size: 10.5px; } .rgroup { padding: 0 4px; } }
@media (max-width: 1500px) { .ribbon .run .btn { font-size: 0; padding: 0 12px; } .ribbon .run .btn::before { content: '▶ Run'; font-size: 12.5px; } }

.modal { max-height: calc(100vh - 40px); overflow: auto; }
.modal.wide { width: min(820px, calc(100vw - 40px)); }

/* 2026-11-06: animation bar, 3D host, drawing sheets in print */
.animbar{position:absolute;left:50%;transform:translateX(-50%);bottom:12px;display:flex;gap:8px;align-items:center;background:var(--panel);border:1px solid var(--line2);border-radius:8px;padding:5px 10px;box-shadow:var(--shadow, 0 2px 8px rgba(0,0,0,.12));font-size:11px}
.animbar input[type=range]{width:260px}
.three canvas{display:block}
#printHost .sheets{display:none}
@media print{
  #printHost .sheets{display:block}
  #printHost .sheets .sheet{page-break-after:always;break-after:page}
  #printHost .sheets .sheet:last-child{page-break-after:auto;break-after:auto}
  #printHost .sheets svg{display:block}
}
.ribbon .body{overflow-x:auto;scrollbar-width:thin}
.dock .vtabs{overflow-x:auto;overflow-y:hidden;flex-wrap:nowrap;scrollbar-width:thin}
.dock .vtabs button{white-space:nowrap;flex:0 0 auto}
.dock .vtabs .note{flex:0 0 auto;white-space:nowrap}
.rcmd span{white-space:normal;line-height:1.1}
.qbar{display:flex;flex-direction:row;gap:10px;align-items:center;flex-wrap:wrap;padding:6px 10px;border-bottom:1px solid var(--line);font-size:12px}
.qbar .ctl{height:26px}