/* FreeHousePlans.in — shared styles.
   Layout: drafting-table plan library. Sticky top nav, wide content column, sheet cards for plans,
   prose column (~68ch) for guides. */
:root {
  --paper: #f3f4f1;
  --sheet: #fbfbf9;
  --ink: #1d2a33;
  --ink-soft: #55636d;
  --rule: #d6dad6;
  --accent: #b5532a;
  --accent-ink: #ffffff;
  --wall: #26343d;
  --road: #c9ccc6;
  --road-ink: #4b555b;
  --good: #2f7a4f;
  --warn: #a8661b;
  --t-B: #dbe5ee; --t-L: #efe6d3; --t-K: #f1dcd2; --t-D: #ece3cf; --t-T: #d5e8e6;
  --t-S: #e1dfe8; --t-U: #e6e7e2; --t-C: #f1f1ec; --t-J: #f4e3b8; --t-O: #d9e8cf;
  --t-A: #e3ecd9; --t-P: #dcdedb; --t-X: #ead9e4;
  --f-display: "Barlow Condensed", "Arial Narrow", "Roboto Condensed", sans-serif;
  --f-body: "Public Sans", "Segoe UI", system-ui, sans-serif;
  --f-mono: "JetBrains Mono", ui-monospace, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #151b20; --sheet: #1c242a; --ink: #e4e8ea; --ink-soft: #9aa6ad; --rule: #2e3940;
    --accent: #e08257; --accent-ink: #1a1208; --wall: #d7dee2; --road: #2a3237; --road-ink: #a4adb2;
    --good: #6cc492; --warn: #e0a25a;
    --t-B: #253545; --t-L: #3a3426; --t-K: #3e2c25; --t-D: #363024; --t-T: #213a38;
    --t-S: #2e2c3a; --t-U: #2b2e2c; --t-C: #262b2d; --t-J: #45391b; --t-O: #24361f;
    --t-A: #293422; --t-P: #2a2e30; --t-X: #3a2834;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #151b20; --sheet: #1c242a; --ink: #e4e8ea; --ink-soft: #9aa6ad; --rule: #2e3940;
  --accent: #e08257; --accent-ink: #1a1208; --wall: #d7dee2; --road: #2a3237; --road-ink: #a4adb2;
  --good: #6cc492; --warn: #e0a25a;
  --t-B: #253545; --t-L: #3a3426; --t-K: #3e2c25; --t-D: #363024; --t-T: #213a38;
  --t-S: #2e2c3a; --t-U: #2b2e2c; --t-C: #262b2d; --t-J: #45391b; --t-O: #24361f;
  --t-A: #293422; --t-P: #2a2e30; --t-X: #3a2834;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font-family: var(--f-body); font-size: 15.5px; line-height: 1.55;
}
body::before { content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px); z-index: 30; background: var(--sheet); }
a { color: var(--accent); text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
img, svg { max-width: 100%; }
[hidden] { display: none !important; }

.wrap {
  max-width: 1240px; margin: 0 auto;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}

/* ── top nav ── */
.site-head { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20; background: var(--sheet); border-bottom: 1px solid var(--rule); }
.site-head .wrap { display: flex; align-items: center; gap: 8px 22px; padding-block: 10px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); margin-right: auto; }
.brand-mark { width: 30px; height: 30px; flex: none; }
.brand b { font-family: var(--f-display); font-weight: 700; font-size: 23px; letter-spacing: .01em; line-height: 1; }
.brand small { display: block; font-family: var(--f-mono); font-size: 10.5px; color: var(--ink-soft); letter-spacing: .04em; }
.nav { display: flex; align-items: center; gap: 2px; flex-wrap: wrap; }
.nav > a, .nav summary {
  font-family: var(--f-display); font-weight: 600; font-size: 17px; letter-spacing: .02em;
  color: var(--ink); text-decoration: none; padding: 6px 10px; border-radius: 4px; cursor: pointer; list-style: none;
}
.nav summary::-webkit-details-marker { display: none; }
.nav summary::after { content: " ▾"; font-size: 12px; color: var(--ink-soft); }
.nav > a:hover, .nav summary:hover { background: var(--paper); }
.nav > a[aria-current="page"] { color: var(--accent); }
.nav details { position: relative; }
.nav .menu {
  position: absolute; right: 0; top: calc(100% + 6px); min-width: 240px; background: var(--sheet);
  border: 1px solid var(--rule); border-radius: 6px; padding: 6px; display: grid; box-shadow: 0 8px 24px rgba(0,0,0,.12); z-index: 25;
}
.nav .menu a { padding: 7px 10px; border-radius: 4px; color: var(--ink); text-decoration: none; font-size: 14.5px; }
.nav .menu a:hover { background: var(--paper); }
@media (max-width: 760px) {
  .site-head .wrap { gap: 6px; }
  .nav { width: 100%; overflow-x: auto; flex-wrap: nowrap; margin-inline: -6px; scrollbar-width: none; }
  .nav::-webkit-scrollbar { display: none; }
  .nav > a, .nav summary { font-size: 16px; white-space: nowrap; padding: 5px 8px; }
  .nav .menu { position: fixed; left: 16px; right: 16px; top: auto; }
}

/* ── type ── */
.eyebrow { font-family: var(--f-mono); font-size: 12px; letter-spacing: .08em; text-transform: uppercase; color: var(--accent); }
h1, h2, h3 { font-family: var(--f-display); text-wrap: balance; margin: 0; }
h1 { font-weight: 700; font-size: clamp(34px, 5.2vw, 56px); line-height: 1.02; letter-spacing: .005em; }
h2 { font-weight: 600; font-size: clamp(26px, 3vw, 32px); line-height: 1.1; }
h3 { font-weight: 600; font-size: 21px; line-height: 1.15; }
.lede { max-width: 68ch; color: var(--ink-soft); margin: 0; font-size: 16.5px; }
.muted { color: var(--ink-soft); }
.num { font-variant-numeric: tabular-nums; }
.mono { font-family: var(--f-mono); }

.page-head { padding-block: 34px 18px; display: grid; gap: 12px; }
.crumbs { font-size: 13px; color: var(--ink-soft); display: flex; gap: 6px; flex-wrap: wrap; }
.crumbs a { color: var(--ink-soft); }
section.block { padding-block: 22px; display: grid; gap: 16px; }
.section-head { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; flex-wrap: wrap; }

/* ── buttons ── */
.btn {
  font: 600 15px var(--f-display); letter-spacing: .06em; text-transform: uppercase;
  display: inline-flex; align-items: center; gap: 8px; justify-content: center;
  border: 1px solid var(--ink); background: none; color: var(--ink); border-radius: 4px; padding: 7px 14px;
  cursor: pointer; text-decoration: none; white-space: nowrap;
}
.btn:hover { background: var(--ink); color: var(--sheet); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn.primary:hover { filter: brightness(1.08); background: var(--accent); color: var(--accent-ink); }
.btn.small { font-size: 13.5px; padding: 4px 10px; }
.btn[disabled] { opacity: .55; cursor: progress; }
.btn svg { width: 15px; height: 15px; }

/* ── home ── */
.hero { padding-block: 40px 26px; display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: 32px; align-items: center; }
.hero .copy { display: grid; gap: 16px; }
.hero-art { background: var(--sheet); border: 1px solid var(--rule); border-radius: 6px; padding: 14px; display: grid; gap: 8px; }
.hero-art svg { width: 100%; height: auto; max-height: 420px; }
.hero-art figcaption { font-family: var(--f-mono); font-size: 12px; color: var(--ink-soft); text-align: center; }
.hero .actions { display: flex; gap: 10px; flex-wrap: wrap; }
.facts { display: flex; gap: 10px 28px; flex-wrap: wrap; font-family: var(--f-mono); font-size: 12.5px; color: var(--ink-soft); }
.facts b { display: block; font-family: var(--f-display); font-size: 30px; color: var(--ink); font-weight: 700; line-height: 1; }
@media (max-width: 820px) { .hero { grid-template-columns: 1fr; } }

.size-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 170px), 1fr)); gap: 12px; }
.size-tile {
  background: var(--sheet); border: 1px solid var(--rule); border-radius: 6px; padding: 12px; text-decoration: none; color: var(--ink);
  display: grid; grid-template-columns: 46px 1fr; gap: 10px; align-items: center; min-width: 0;
}
.size-tile:hover { border-color: var(--ink-soft); }
.size-tile svg { width: 46px; height: 60px; }
.size-tile b { font-family: var(--f-display); font-size: 23px; font-weight: 700; display: block; line-height: 1.05; }
.size-tile span { font-family: var(--f-mono); font-size: 11.5px; color: var(--ink-soft); display: block; }

.link-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 260px), 1fr)); gap: 14px; }
.link-card { background: var(--sheet); border: 1px solid var(--rule); border-radius: 6px; padding: 16px; text-decoration: none; color: var(--ink); display: grid; gap: 6px; align-content: start; }
.link-card:hover { border-color: var(--ink-soft); }
.link-card p { margin: 0; color: var(--ink-soft); font-size: 14px; }
.link-card .k { font-family: var(--f-mono); font-size: 11.5px; letter-spacing: .06em; text-transform: uppercase; color: var(--accent); }

/* ── plan cards ── */
.legend { display: flex; flex-wrap: wrap; gap: 6px 14px; font-size: 12.5px; color: var(--ink-soft); }
.legend span { display: inline-flex; align-items: center; gap: 6px; }
.legend i { width: 14px; height: 14px; border: 1.5px solid var(--wall); border-radius: 2px; display: inline-block; }
.plan-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 370px), 1fr)); gap: 18px; }
.card { background: var(--sheet); border: 1px solid var(--rule); border-radius: 6px; display: grid; grid-template-rows: auto 1fr auto; min-width: 0; }
.card:hover { border-color: var(--ink-soft); }
.card-head { padding: 14px 16px 10px; display: grid; gap: 5px; border-bottom: 1px dashed var(--rule); }
.title-row { display: flex; justify-content: space-between; align-items: baseline; gap: 10px; }
.code { font-family: var(--f-mono); font-size: 11.5px; color: var(--accent); letter-spacing: .04em; white-space: nowrap; }
.card h3 { font-size: 21px; }
.card h3 a { color: inherit; text-decoration: none; }
.card h3 a:hover { text-decoration: underline; }
.stats { display: flex; flex-wrap: wrap; gap: 2px 14px; font-family: var(--f-mono); font-size: 11.5px; color: var(--ink-soft); font-variant-numeric: tabular-nums; }
.stats b { color: var(--ink); font-weight: 500; }
.drawings { display: flex; gap: 8px; padding: 10px 12px; justify-content: center; align-items: flex-start; min-width: 0; }
.floor { flex: 1 1 0; min-width: 0; max-width: 300px; display: grid; gap: 3px; justify-items: center; margin: 0; }
.floor-label { font-family: var(--f-display); font-weight: 600; font-size: 13px; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-soft); }
.floor svg { width: 100%; height: auto; display: block; max-height: 440px; }
.card-foot { padding: 2px 16px 14px; display: grid; gap: 10px; }
.tags { display: flex; flex-wrap: wrap; gap: 5px; }
.tag { font-size: 11.5px; padding: 1px 7px; border-radius: 3px; background: var(--paper); border: 1px solid var(--rule); }
.card-actions { display: flex; gap: 8px; flex-wrap: wrap; }

svg .room { stroke: var(--wall); stroke-width: .26; }
svg .outline { fill: none; stroke: var(--wall); stroke-width: .6; }
svg .lbl { font-family: var(--f-display); font-weight: 600; fill: var(--ink); text-anchor: middle; }
svg .dim { font-family: var(--f-mono); fill: var(--ink-soft); text-anchor: middle; }
svg .dimline { stroke: var(--ink-soft); stroke-width: .12; fill: none; }
svg .road { fill: var(--road); }
svg .roadtxt { font-family: var(--f-display); font-weight: 600; fill: var(--road-ink); text-anchor: middle; letter-spacing: .3px; }
svg .hatch { stroke: var(--wall); stroke-width: .1; opacity: .35; }
svg .thumb-room { stroke: var(--wall); stroke-width: .5; }

/* ── filters ── */
.filters { background: var(--sheet); border: 1px solid var(--rule); border-radius: 6px; padding: 14px 16px; display: grid; gap: 12px; }
.filter-row { display: flex; flex-wrap: wrap; gap: 10px 16px; align-items: end; }
.field { display: grid; gap: 4px; min-width: 0; }
.field label, .field .lab { font-family: var(--f-display); font-weight: 600; font-size: 13px; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-soft); }
select, input[type="number"], input[type="text"], input[type="search"] {
  font: 15px var(--f-body); color: var(--ink); background: var(--paper); border: 1px solid var(--rule); border-radius: 4px; padding: 7px 9px; min-width: 0; max-width: 100%;
}
input[type="number"] { width: 110px; font-variant-numeric: tabular-nums; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { display: inline-flex; align-items: center; gap: 6px; font-size: 13.5px; padding: 5px 10px; border: 1px solid var(--rule); border-radius: 20px; background: var(--paper); cursor: pointer; user-select: none; }
.chip input { accent-color: var(--accent); margin: 0; }
.chip:has(input:checked) { border-color: var(--accent); background: var(--sheet); }
.result-bar { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; font-size: 14px; color: var(--ink-soft); }
.more { display: flex; justify-content: center; padding-block: 18px; }

/* ── tables & prose ── */
.tbl { overflow-x: auto; border: 1px solid var(--rule); border-radius: 6px; background: var(--sheet); }
table { width: 100%; border-collapse: collapse; font-size: 14px; font-variant-numeric: tabular-nums; }
th, td { text-align: left; padding: 8px 12px; border-bottom: 1px solid var(--rule); vertical-align: top; }
tr:last-child td { border-bottom: 0; }
th { font-family: var(--f-display); font-weight: 600; letter-spacing: .06em; text-transform: uppercase; font-size: 13.5px; color: var(--ink-soft); background: var(--paper); white-space: nowrap; }
td.n, th.n { text-align: right; font-family: var(--f-mono); font-size: 13px; }
.prose { max-width: 72ch; display: grid; gap: 14px; }
.prose p, .prose ul, .prose ol { margin: 0; }
.prose ul, .prose ol { padding-left: 1.3em; display: grid; gap: 5px; }
.prose h2 { margin-top: 18px; }
.prose h3 { margin-top: 8px; }
.callout { border: 1px solid var(--rule); border-left: 4px solid var(--warn); background: var(--sheet); border-radius: 4px; padding: 12px 14px; font-size: 14.5px; }
.callout.good { border-left-color: var(--good); }
.two-col { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 24px; align-items: start; }
@media (max-width: 860px) { .two-col { grid-template-columns: 1fr; } }
.toc { background: var(--sheet); border: 1px solid var(--rule); border-radius: 6px; padding: 12px 16px; font-size: 14px; display: grid; gap: 4px; }
.toc b { font-family: var(--f-display); font-size: 14px; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-soft); }
details.faq { border-bottom: 1px solid var(--rule); padding-block: 12px; }
details.faq summary { font-family: var(--f-display); font-weight: 600; font-size: 19px; cursor: pointer; }
details.faq p { margin: 8px 0 0; max-width: 72ch; color: var(--ink-soft); }

/* ── tools ── */
.tool { display: grid; grid-template-columns: minmax(0, 360px) minmax(0, 1fr); gap: 22px; align-items: start; }
@media (max-width: 860px) { .tool { grid-template-columns: 1fr; } }
.panel { background: var(--sheet); border: 1px solid var(--rule); border-radius: 6px; padding: 16px; display: grid; gap: 14px; min-width: 0; }
.big-number { font-family: var(--f-display); font-weight: 700; font-size: clamp(36px, 5vw, 52px); line-height: 1; font-variant-numeric: tabular-nums; }
.bar-row { display: grid; grid-template-columns: 150px 1fr 110px; gap: 10px; align-items: center; font-size: 14px; }
.bar-row .bar { height: 12px; background: var(--paper); border: 1px solid var(--rule); border-radius: 2px; overflow: hidden; }
.bar-row .bar i { display: block; height: 100%; background: var(--accent); }
.bar-row .v { text-align: right; font-family: var(--f-mono); font-size: 13px; }
@media (max-width: 520px) { .bar-row { grid-template-columns: 110px 1fr 90px; font-size: 13px; } }
.check-stage { display: grid; gap: 6px; }
.check-stage h3 { display: flex; justify-content: space-between; gap: 10px; align-items: baseline; }
.check-stage h3 small { font-family: var(--f-mono); font-size: 12px; color: var(--ink-soft); font-weight: 400; }
.check-item { display: flex; gap: 10px; align-items: flex-start; padding: 7px 10px; border-radius: 4px; background: var(--sheet); border: 1px solid var(--rule); cursor: pointer; }
.check-item input { margin-top: 4px; accent-color: var(--good); }
.check-item:has(input:checked) span { color: var(--ink-soft); text-decoration: line-through; }
.progress { height: 8px; background: var(--sheet); border: 1px solid var(--rule); border-radius: 4px; overflow: hidden; }
.progress i { display: block; height: 100%; background: var(--good); transition: width .2s; }
.vastu-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 4px; max-width: 420px; aspect-ratio: 1; }
.vastu-grid div { background: var(--sheet); border: 1px solid var(--rule); border-radius: 4px; padding: 8px; font-size: 12.5px; display: grid; align-content: center; text-align: center; gap: 2px; }
.vastu-grid div b { font-family: var(--f-display); font-size: 16px; }
.vastu-grid div span { color: var(--ink-soft); }

/* ── dialog ── */
dialog.viewer { border: 1px solid var(--rule); background: var(--sheet); color: var(--ink); border-radius: 8px; width: min(1180px, calc(100vw - 20px)); max-height: calc(100vh - 20px); padding: 0; }
dialog.viewer::backdrop { background: rgba(10, 16, 20, .55); }
.dlg-head { display: flex; justify-content: space-between; align-items: center; gap: 10px; padding: 12px 16px; border-bottom: 1px solid var(--rule); position: sticky; top: 0; background: var(--sheet); z-index: 2; flex-wrap: wrap; }
.dlg-head h2 { font-size: 24px; }
.dlg-tools { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.dlg-body { padding: 16px; display: grid; gap: 16px; }
.dlg-body .drawings { padding: 0; }
.dlg-body .floor { max-width: 480px; }
.dlg-body .floor svg { max-height: 74vh; }
.toggle { display: inline-flex; gap: 6px; align-items: center; font-size: 14px; cursor: pointer; }
.toggle input { accent-color: var(--accent); }

.toast { position: fixed; left: 50%; bottom: calc(18px + env(safe-area-inset-bottom, 0px)); transform: translateX(-50%); background: var(--ink); color: var(--sheet); padding: 10px 16px; border-radius: 6px; font-size: 14px; z-index: 60; max-width: calc(100vw - 32px); }

/* ── footer ── */
.site-foot { margin-top: 30px; border-top: 1px solid var(--rule); background: var(--sheet); }
.site-foot .wrap { padding-block: 26px 34px; display: grid; gap: 22px; }
.foot-cols { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 180px), 1fr)); gap: 18px; font-size: 14px; }
.foot-cols b { font-family: var(--f-display); font-size: 14px; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-soft); display: block; margin-bottom: 6px; }
.foot-cols a { display: block; color: var(--ink); text-decoration: none; padding-block: 2px; }
.foot-cols a:hover { color: var(--accent); }
.credit { margin: 0; font-size: 15px; padding-bottom: 14px; border-bottom: 1px dashed var(--rule); }
.fine { font-size: 12.5px; color: var(--ink-soft); max-width: 90ch; margin: 0; }

@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }