/* Recast or Not - a trail map: survey-paper ground, contour lines, forest-ink type, carved trail signs, and one colour
 * per path (keep = lake slate, recast = moss, prepay = clay, refinance = heather). */
:root {
  --bg: #f3eee1; --sheet: #fbf8f0; --sheet2: #efe8d6; --ink: #22301f; --muted: #5a6352; --line: #d6ccb2; --contour: #cdbf9c;
  --brand: #2f4a2c; --brand-ink: #fbf8f0; --accent: #9a4a1c; --focus: #9a4a1c;
  --keep: #3f6386; --recast: #3f7d3a; --prepay: #b5532a; --refi: #7a4b8f;
  --keep-soft: rgba(63, 99, 134, .16); --recast-soft: rgba(63, 125, 58, .18); --prepay-soft: rgba(181, 83, 42, .16); --refi-soft: rgba(122, 75, 143, .16);
  --wood: #e7d7b4; --wood2: #d9c393; --wood-ink: #3b2a14;
  --ok: #2c6a2f; --ok-bg: #e1efda; --warn: #8a4a00; --warn-bg: #f8e6c4; --info: #335777; --info-bg: #e1e9f1; --down: #a12d22; --down-bg: #f7dfd9;
  --shadow: 0 1px 2px rgba(40, 35, 20, .08), 0 8px 20px rgba(40, 35, 20, .07);
  color-scheme: light;
}
:root[data-theme="dark"] {
  --bg: #121712; --sheet: #1a211a; --sheet2: #222b21; --ink: #e8ecdf; --muted: #a9b39d; --line: #34402f; --contour: #3a4734;
  --brand: #b8d99a; --brand-ink: #142012; --accent: #f0a46e; --focus: #f0a46e;
  --keep: #8fb4dc; --recast: #95d38a; --prepay: #f19a6c; --refi: #cfa4e6;
  --keep-soft: rgba(143, 180, 220, .18); --recast-soft: rgba(149, 211, 138, .18); --prepay-soft: rgba(241, 154, 108, .18); --refi-soft: rgba(207, 164, 230, .18);
  --wood: #3a2f1e; --wood2: #4a3b24; --wood-ink: #f3e5c6;
  --ok: #9fdc94; --ok-bg: rgba(130, 200, 120, .15); --warn: #f2c26c; --warn-bg: rgba(240, 180, 80, .15); --info: #a9c8ea; --info-bg: rgba(120, 160, 220, .16); --down: #ff9d8f; --down-bg: rgba(255, 120, 100, .15);
  --shadow: 0 1px 2px rgba(0, 0, 0, .5), 0 10px 24px rgba(0, 0, 0, .35);
  color-scheme: dark;
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--bg); color: var(--ink); font: 15px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; overflow-x: hidden; }
a { color: var(--accent); }
h1, h2, h3 { line-height: 1.2; letter-spacing: -.01em; }
h1, .card h2, .colhead, .sname, .stamp, .rdtitle { font-family: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif; }
.hidden { display: none !important; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.small { font-size: 13px; } .muted { color: var(--muted); } .mono { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; font-variant-numeric: tabular-nums; }
.warn { color: var(--warn); } .none { color: var(--muted); font-style: italic; }
button, input, select, textarea { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }

/* Header */
.topbar { display: flex; align-items: center; gap: 12px; padding: 10px 20px; background: var(--sheet); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 5; }
.back { text-decoration: none; font-size: 14px; color: var(--muted); }
.brand { display: flex; align-items: center; gap: 8px; margin-right: auto; font-size: 17px; }
.logo { width: 30px; height: 30px; }
.lg-hill { fill: var(--brand); } .lg-trail { fill: none; stroke: var(--sheet); stroke-width: 1.6; stroke-dasharray: 2.5 2; } .lg-pole { stroke: var(--brand); stroke-width: 1.4; } .lg-flag { fill: var(--accent); }
.session { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; justify-content: flex-end; }
.pill { display: inline-flex; align-items: center; gap: 4px; border: 1px solid var(--line); background: var(--sheet); border-radius: 999px; padding: 5px 12px; font-size: 13px; cursor: pointer; text-decoration: none; color: var(--ink); }
.pill:hover { border-color: var(--accent); }
.pill.solid, .btn.solid { background: var(--brand); color: var(--brand-ink); border-color: var(--brand); }
.pill.ghost { background: transparent; cursor: default; }
.pill.tiny { padding: 2px 10px; font-size: 12px; }

/* Layout */
.wrap { max-width: 1200px; margin: 0 auto; padding: 20px 20px 40px; }
.hero { padding: 14px 0 6px; max-width: 860px; }
.kicker { text-transform: uppercase; letter-spacing: .16em; font-size: 12px; color: var(--accent); margin: 0; font-weight: 700; }
.hero h1 { font-size: clamp(28px, 4.6vw, 44px); margin: 6px 0 10px; }
.lede { color: var(--muted); font-size: 16px; margin: 0 0 14px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.chips-label { font-size: 13px; color: var(--muted); }
.chip { border: 1px solid var(--line); background: var(--sheet); border-radius: 6px; padding: 6px 12px; cursor: pointer; font-size: 14px; }
.chip:hover { border-color: var(--accent); }
.chip.on { background: var(--brand); color: var(--brand-ink); border-color: var(--brand); }
.two { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 22px; margin-top: 18px; align-items: start; }
.card { background: var(--sheet); border: 1px solid var(--line); border-radius: 10px; padding: 18px; box-shadow: var(--shadow); margin-top: 18px; }
.two > .card, .trailcol > .card:first-child { margin-top: 0; }
.card h2, .colhead { font-size: 22px; margin: 0 0 10px; }
.colhead .small { font-weight: 400; margin-left: 6px; font-family: system-ui, sans-serif; }
section > .colhead { margin-top: 26px; }
.h3 { font-size: 15px; margin: 14px 0 8px; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.lbl { display: block; font-weight: 600; font-size: 14px; margin: 12px 0 4px; }

/* Form */
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 12px; }
.grid2 label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; font-weight: 600; }
.grid2 label .small { font-weight: 400; }
.grid2 .span2 { grid-column: 1 / -1; }
input[type="text"], select, textarea { width: 100%; border: 1px solid var(--line); background: var(--sheet2); border-radius: 6px; padding: 7px 9px; font-size: 15px; font-weight: 400; }
textarea { resize: vertical; min-height: 70px; }
input[type="text"]:focus, select:focus, textarea:focus { border-color: var(--brand); outline: none; box-shadow: 0 0 0 2px var(--recast-soft); }
.drop { border: 1px dashed transparent; border-radius: 8px; margin-top: 4px; }
.drop.over { border-color: var(--accent); background: var(--sheet2); }
.drop p { margin: 4px 0 0; }
.filelink { color: var(--accent); text-decoration: underline; cursor: pointer; }
.notes { list-style: none; padding: 0; margin: 10px 0 0; }
.notes li { padding: 6px 10px; border-radius: 6px; font-size: 13px; margin-top: 4px; }
.notes li.warn { background: var(--warn-bg); color: var(--warn); }

/* Profile */
.profwrap { background: var(--sheet2); border: 1px solid var(--line); border-radius: 8px; padding: 6px; }
.profile { width: 100%; height: auto; display: block; }
.trailnone { padding: 40px 16px; text-align: center; }
.contour { fill: none; stroke: var(--contour); stroke-width: 1; }
.grid { stroke: var(--line); stroke-width: .8; stroke-dasharray: 2 4; }
.axis { stroke: var(--muted); stroke-width: 1; }
.axtick { fill: var(--muted); font-size: 11px; font-family: ui-monospace, Menlo, monospace; }
.horizon { stroke: var(--accent); stroke-width: 1.4; stroke-dasharray: 5 4; }
.hlabel { fill: var(--accent); font-size: 11.5px; font-weight: 600; }
.trail { fill: none; stroke-width: 2.4; stroke-linejoin: round; stroke-linecap: round; }
.trail.lean { stroke-width: 3.6; }
.trail.faint { stroke-dasharray: 3 4; opacity: .7; }
.t-keep { stroke: var(--keep); } .t-recast { stroke: var(--recast); } .t-prepay { stroke: var(--prepay); } .t-refi { stroke: var(--refi); }
.fill-keep { fill: var(--keep-soft); } .fill-recast { fill: var(--recast-soft); } .fill-prepay { fill: var(--prepay-soft); } .fill-refi { fill: var(--refi-soft); }
.flag .pole { stroke: var(--ink); stroke-width: 1.2; }
.f-keep .pennant { fill: var(--keep); } .f-recast .pennant { fill: var(--recast); } .f-prepay .pennant { fill: var(--prepay); } .f-refi .pennant { fill: var(--refi); }
.dot { stroke: var(--sheet); stroke-width: 1.4; }
.d-keep { fill: var(--keep); } .d-recast { fill: var(--recast); } .d-prepay { fill: var(--prepay); } .d-refi { fill: var(--refi); }
.legend { display: flex; flex-wrap: wrap; gap: 6px 8px; align-items: center; margin-top: 10px; }
.lg { display: inline-flex; align-items: center; gap: 6px; border: 1px solid var(--line); background: var(--sheet); border-radius: 999px; padding: 3px 11px 3px 7px; font-size: 13px; cursor: pointer; }
.lg.off { opacity: .45; text-decoration: line-through; }
.sw { width: 18px; height: 4px; border-radius: 2px; display: inline-block; }
.sw-keep { background: var(--keep); } .sw-recast { background: var(--recast); } .sw-prepay { background: var(--prepay); } .sw-refi { background: var(--refi); }
.lgnote { flex-basis: 100%; }

/* Flags */
.flags { list-style: none; padding: 0; margin: 0; }
.flags li { padding: 7px 10px; border-radius: 6px; margin-bottom: 5px; font-size: 13.5px; background: var(--sheet2); }
.flags .lv { display: inline-block; font-size: 10.5px; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; padding: 1px 6px; border-radius: 4px; margin-right: 4px; background: var(--sheet); border: 1px solid var(--line); }
.flags .lv-warn { background: var(--warn-bg); color: var(--warn); } .flags .lv-warn .lv { color: var(--warn); border-color: currentColor; }
.flags .lv-info { background: var(--info-bg); color: var(--info); } .flags .lv-info .lv { color: var(--info); border-color: currentColor; }
.flags .ok { background: var(--ok-bg); color: var(--ok); }
.flags .pv { font-weight: 700; background: var(--sheet); border: 1px solid var(--line); }
.badge { display: inline-block; font-size: 11.5px; font-weight: 700; padding: 2px 8px; border-radius: 999px; border: 1px solid transparent; font-family: system-ui, sans-serif; letter-spacing: .01em; }
.badge:empty { display: none; }
.b-lean { background: var(--ok-bg); color: var(--ok); border-color: currentColor; }
.b-warn { background: var(--warn-bg); color: var(--warn); border-color: currentColor; }
.b-fit { background: var(--info-bg); color: var(--info); border-color: currentColor; }
.fit-best { background: var(--ok-bg); color: var(--ok); } .fit-poor { background: var(--down-bg); color: var(--down); } .fit-unavailable { background: var(--warn-bg); color: var(--warn); }

/* Trail signs */
.signs { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px; }
.sign { position: relative; background: linear-gradient(180deg, var(--wood), var(--wood2)); color: var(--wood-ink); border-radius: 8px; padding: 14px 14px 12px; box-shadow: var(--shadow); border-top: 6px solid var(--keep); }
.sign::after { content: ""; position: absolute; left: 50%; bottom: -14px; width: 10px; height: 14px; margin-left: -5px; background: var(--wood2); border-radius: 0 0 3px 3px; opacity: .8; }
.s-keep { border-top-color: var(--keep); } .s-recast { border-top-color: var(--recast); } .s-prepay { border-top-color: var(--prepay); } .s-refi { border-top-color: var(--refi); }
.sign.leaning { outline: 2px solid var(--brand); outline-offset: 2px; }
.shead { display: flex; justify-content: space-between; align-items: flex-start; gap: 6px; flex-wrap: wrap; }
.sname { font-size: 18px; font-weight: 700; }
.stags { display: flex; gap: 4px; flex-wrap: wrap; }
.spay { margin: 6px 0 8px; font-size: 22px; font-weight: 700; }
.spay .small { font-weight: 400; color: inherit; opacity: .85; }
.srow { display: flex; justify-content: space-between; gap: 10px; font-size: 13.5px; padding: 3px 0; border-top: 1px dashed rgba(90, 70, 30, .3); }
.srow .sk { opacity: .9; } .srow .sv { text-align: right; font-weight: 600; }
.srow.vs { margin-top: 4px; padding: 6px 8px; border-radius: 6px; border-top: 0; background: rgba(255, 255, 255, .35); }
:root[data-theme="dark"] .srow.vs { background: rgba(0, 0, 0, .25); }
:root[data-theme="dark"] .srow { border-top-color: rgba(240, 220, 180, .2); }
.srow.vs.up .sv { color: var(--ok); } .srow.vs.down .sv { color: var(--down); }
.srow.vs.top { box-shadow: inset 0 0 0 1.5px var(--ok); }
.cushion { margin-top: 8px; }
.cbar { position: relative; height: 8px; background: rgba(90, 70, 30, .2); border-radius: 4px; margin-top: 4px; overflow: visible; }
.cfill { position: absolute; left: 0; top: 0; bottom: 0; background: var(--ok); border-radius: 4px; }
.cushion.thin .cfill { background: var(--down); }
.cmark { position: absolute; top: -3px; bottom: -3px; width: 2px; background: var(--wood-ink); }

/* Ask + progress */
.askrow { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin: 8px 0 4px; }
.btn { border: 1px solid var(--line); border-radius: 8px; padding: 10px 18px; font-size: 16px; font-weight: 700; cursor: pointer; }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.meter { color: var(--muted); }
.gate { background: var(--info-bg); color: var(--info); padding: 10px 12px; border-radius: 8px; margin: 10px 0 0; }
.gate a { margin-left: 6px; }
.steps { list-style: none; padding: 0; margin: 0; }
.step { padding: 4px 0; color: var(--muted); } .step.active { color: var(--ink); font-weight: 600; } .step.done { color: var(--ok); }
.step-ic { display: inline-block; width: 18px; font-family: ui-monospace, monospace; }
.raw { white-space: pre-wrap; word-break: break-word; background: var(--sheet2); padding: 10px; border-radius: 6px; max-height: 360px; overflow: auto; }

/* Read */
.rdhead { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; }
.stamp { display: inline-block; padding: 4px 14px; border: 2.5px solid currentColor; border-radius: 6px; font-size: 18px; font-weight: 700; transform: rotate(-2deg); text-transform: uppercase; letter-spacing: .04em; }
.stamp.v-keep { color: var(--keep); } .stamp.v-recast { color: var(--recast); } .stamp.v-prepay { color: var(--prepay); } .stamp.v-refinance { color: var(--refi); }
.rdtitle { font-size: 19px; font-weight: 700; margin: 8px 0 4px; }
.rdsummary { margin: 0 0 8px; font-size: 15.5px; }
.partial { background: var(--warn-bg); color: var(--warn); padding: 8px 10px; border-radius: 6px; }
.plist { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.pitem { border-left: 4px solid var(--keep); background: var(--sheet2); padding: 8px 12px; border-radius: 0 6px 6px 0; }
.p-keep { border-left-color: var(--keep); } .p-recast { border-left-color: var(--recast); } .p-prepay { border-left-color: var(--prepay); } .p-refi { border-left-color: var(--refi); }
.phead { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.pitem p { margin: 4px 0 0; font-size: 14px; }
.rdgrid { display: grid; grid-template-columns: 1fr 1fr; gap: 4px 22px; }
.plain, .kit, .recon { padding-left: 18px; margin: 0; }
.plain li, .kit li, .recon li { margin-bottom: 5px; font-size: 14px; }
.kit { list-style: none; padding-left: 0; }
.tick { display: flex; gap: 8px; align-items: flex-start; }
.tick input { margin-top: 4px; }
.recon li.warn { color: var(--warn); } .recon li.info { color: var(--info); }
.recon li.none { color: var(--muted); }

/* Exports + history */
.btnrow { display: flex; flex-wrap: wrap; gap: 8px; }
.hist { list-style: none; padding: 0; margin: 12px 0 0; }
.hrow { display: flex; gap: 8px; align-items: center; padding: 8px 0; border-top: 1px solid var(--line); }
.hinfo { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.hinfo b { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* Footer, toasts */
.foot { max-width: 1200px; margin: 0 auto; padding: 10px 20px 40px; color: var(--muted); font-size: 13px; }
.toasts { position: fixed; right: 16px; bottom: 16px; display: flex; flex-direction: column; gap: 8px; z-index: 20; max-width: min(380px, calc(100vw - 32px)); }
.toast { padding: 10px 14px; border-radius: 8px; box-shadow: var(--shadow); font-size: 14px; transition: opacity .5s; }
.toast.ok { background: var(--brand); color: var(--brand-ink); } .toast.err { background: var(--down-bg); color: var(--down); border: 1px solid currentColor; }
.toast a { color: inherit; font-weight: 700; }
.toast.gone { opacity: 0; }

/* Docs pages (api.html, tokens.html) */
.doc { max-width: 900px; margin: 0 auto; padding: 24px 20px 40px; }
.doc pre { background: var(--sheet2); border: 1px solid var(--line); border-radius: 8px; padding: 12px; overflow: auto; font-size: 12.5px; line-height: 1.5; }
.doc code { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; font-size: .92em; }
.doc table { border-collapse: collapse; width: 100%; font-size: 14px; display: block; overflow-x: auto; }
.doc th, .doc td { border: 1px solid var(--line); padding: 6px 8px; text-align: left; vertical-align: top; }
.doc h1 { font-size: 2rem; } .doc h2 { font-size: 1.35rem; margin-top: 32px; } .doc h3 { font-size: 1.05rem; margin-top: 22px; }
.doc pre code { white-space: pre; } .doc td code { white-space: normal; }
.codegroup { margin: 10px 0 16px; }
.codegroup .tabs { display: inline-flex; flex-wrap: wrap; gap: 0; padding: 0; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; background: var(--sheet); margin-bottom: 6px; }
.codegroup .tab { border: none; border-right: 1px solid var(--line); background: var(--sheet); color: var(--ink); font-family: system-ui, sans-serif; padding: 5px 11px; cursor: pointer; font-size: 13px; }
.codegroup .tab.active { background: var(--brand); color: var(--brand-ink); font-weight: 700; }
.statebox { background: var(--sheet); border: 1px solid var(--line); border-radius: 10px; padding: 10px 14px; }
.tokenrow { display: flex; gap: 8px; flex-wrap: wrap; margin: 8px 0; }
.tokenbox { font-family: ui-monospace, Menlo, monospace; font-size: 13px; background: var(--sheet); border: 1px solid var(--line); padding: 8px 12px; border-radius: 8px; overflow-wrap: anywhere; flex: 1; }

@media (max-width: 900px) {
  .two { grid-template-columns: 1fr; }
  .rdgrid { grid-template-columns: 1fr; }
}
@media (max-width: 520px) {
  .wrap { padding: 14px 16px 32px; }
  .topbar { padding: 8px 12px; gap: 8px; flex-wrap: wrap; }
  .back { display: none; }
  .grid2 { grid-template-columns: 1fr 1fr; gap: 8px; }
  .card { padding: 14px; }
  .tick { font-size: 13px; }
  .signs { grid-template-columns: 1fr; }
  .axtick { font-size: 17px; } .hlabel { font-size: 19px; }
  .trail { stroke-width: 3.4; } .trail.lean { stroke-width: 5; }
}
@media print {
  .topbar, .chips, .askcard, .exports, .history, .toasts, .progress-card, .legend .lgnote { display: none !important; }
  body { background: #fff; }
  .card, .sign { box-shadow: none; }
}