/* Roomspace. The chrome is deliberately colourless — the room is the only
   thing on the page allowed to have a palette, and any accent here would end
   up being compared with it. */

:root {
  --ui: "Inter", ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --display: "Instrument Serif", ui-serif, Georgia, "Times New Roman", serif;
  --paper: #F4F1EB;
  --card: #FBF9F5;
  --ink: #191612;
  --ink2: #191612a8;
  --ink3: #19161266;
  --line: #1916121f;
  --line2: #19161212;
  --good: #3D6B4E;
  --mid: #8C6318;
  --bad: #9E3D2C;
  --r: 14px;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--ui);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
a { color: inherit; text-decoration-color: var(--line); text-underline-offset: 3px; }
a:hover { text-decoration-color: currentColor; }

/* ── head ─────────────────────────────────────────────────────────────── */

.head { padding: clamp(22px, 5vw, 44px) 20px 0; }
.headin { max-width: 1360px; margin: 0 auto; }
.head h1 {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(2.6rem, 7vw, 4.2rem);
  line-height: .92;
  letter-spacing: -.015em;
  margin: 0;
}
.sub {
  margin: .5rem 0 0;
  max-width: 40rem;
  color: var(--ink2);
  font-size: clamp(.95rem, 2.4vw, 1.06rem);
}
.sub em { font-family: var(--display); font-style: italic; font-size: 1.18em; }

/* ── grid ─────────────────────────────────────────────────────────────── */

.grid {
  max-width: 1360px;
  margin: 0 auto;
  padding: clamp(16px, 3vw, 26px) 20px 40px;
  display: grid;
  gap: clamp(16px, 2.4vw, 28px);
  align-items: start;
}
@media (min-width: 1040px) {
  .grid { grid-template-columns: minmax(0, 1fr) 400px; }
  .panel { position: sticky; top: 18px; }
}

/* ── what the room is for ─────────────────────────────────────────────── */

.purposes {
  display: flex;
  gap: 4px;
  margin: 0 0 12px;
  padding: 3px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 999px;
  width: fit-content;
  max-width: 100%;
  overflow-x: auto;
  scrollbar-width: none;
}
.purposes::-webkit-scrollbar { display: none; }
.purposes button {
  padding: 7px 16px;
  border-radius: 999px;
  font-size: .86rem;
  white-space: nowrap;
  color: var(--ink2);
}
.purposes button:hover { color: var(--ink); }
.purposes button[aria-pressed="true"] { background: var(--ink); color: var(--paper); }

/* ── the room ─────────────────────────────────────────────────────────── */

.stage { position: relative; }
.roomwrap {
  border-radius: var(--r);
  overflow: hidden;
  box-shadow: 0 1px 2px #19161214, 0 18px 40px -22px #19161240;
  background: var(--card);
  aspect-ratio: 3 / 2;
}
.roomwrap svg { display: block; width: 100%; height: 100%; }
/* On a pale floor white-on-shadow disappeared; a pill works in every room. */
.coords {
  position: absolute;
  left: 9px; bottom: 8px;
  margin: 0;
  padding: 2px 7px;
  border-radius: 6px;
  background: #00000047;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 10px;
  letter-spacing: .07em;
  color: #ffffffd6;
  pointer-events: none;
}

/* ── nearest ──────────────────────────────────────────────────────────── */

.nearest {
  margin-top: 14px;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 10px;
  font-size: .9rem;
}
.nearest .label { color: var(--ink3); font-size: .74rem; letter-spacing: .13em; text-transform: uppercase; }
.nearest button {
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--card);
  white-space: nowrap;
}
.nearest button:hover { border-color: var(--ink3); }
.nearest button b { font-weight: 600; }
.nearest button i { font-style: normal; color: var(--ink3); margin-left: 5px; font-variant-numeric: tabular-nums; }
.nearest button:first-of-type { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.nearest button:first-of-type i { color: #ffffff9c; }

/* ── bar ──────────────────────────────────────────────────────────────── */

.bar { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.bar button {
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: .86rem;
  background: var(--card);
}
.bar button:hover { border-color: var(--ink3); }
.bar .right { margin-left: auto; }

/* On a phone the four buttons wrapped to three rows and pushed the panel off
   the screen; pinning Copy link to the right was what forced the break. */
@media (max-width: 560px) {
  .bar button { padding: 7px 12px; font-size: .8rem; }
  .bar .right { margin-left: 0; }
  .nearest button { padding: 3px 9px; font-size: .84rem; }
  .sub { font-size: .95rem; }
  .purposes button { padding: 6px 12px; font-size: .8rem; }
  .cnums { display: none; }        /* twelve numbers is a whole line on a phone */
  .purposelist { grid-template-columns: 1fr; }
}

/* ── panel ────────────────────────────────────────────────────────────── */

.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
}
.tabs { display: flex; border-bottom: 1px solid var(--line); }
.tabs button {
  flex: 1;
  padding: 12px 4px;
  font-size: .8rem;
  letter-spacing: .06em;
  color: var(--ink3);
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}
.tabs button[aria-selected="true"] { color: var(--ink); border-bottom-color: var(--ink); font-weight: 500; }
.tabpanel { padding: 16px 16px 20px; max-height: min(66vh, 720px); overflow-y: auto; }
@media (max-width: 1039px) { .tabpanel { max-height: none; } }
.lead { margin: 0 0 14px; font-size: .84rem; color: var(--ink2); line-height: 1.5; }

/* ── axes ─────────────────────────────────────────────────────────────── */

.axgroup + .axgroup { margin-top: 20px; }
.axgroup > h3 {
  margin: 0 0 10px;
  font-size: .7rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink3);
  font-weight: 500;
}
.axis { padding: 7px 0; }
.axis .top { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; }
.axis .nm { font-size: .9rem; font-weight: 500; }
.axis .val { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .78rem; color: var(--ink3); font-variant-numeric: tabular-nums; }
.axis .ends { display: flex; justify-content: space-between; font-size: .7rem; color: var(--ink3); margin-top: 1px; }
.axis .note {
  font-size: .78rem;
  color: var(--ink2);
  line-height: 1.45;
  margin: 5px 0 0;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height .22s ease, opacity .22s ease;
}
.axis:focus-within .note, .axis:hover .note { max-height: 5.4rem; opacity: 1; }

input[type="range"] {
  -webkit-appearance: none; appearance: none;
  width: 100%; height: 22px; margin: 2px 0 0; background: none; display: block;
}
input[type="range"]::-webkit-slider-runnable-track { height: 3px; border-radius: 2px; background: var(--line); }
input[type="range"]::-moz-range-track { height: 3px; border-radius: 2px; background: var(--line); }
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 17px; height: 17px; border-radius: 50%;
  background: var(--ink); border: 3px solid var(--card); margin-top: -7px;
  box-shadow: 0 1px 3px #19161240;
}
input[type="range"]::-moz-range-thumb {
  width: 17px; height: 17px; border-radius: 50%; border: 3px solid var(--card);
  background: var(--ink); box-shadow: 0 1px 3px #19161240;
}
input[type="range"]:focus-visible { outline: 2px solid var(--ink); outline-offset: 4px; border-radius: 4px; }

/* ── the room panel ───────────────────────────────────────────────────── */

.sect {
  margin: 0 0 9px;
  font-size: .7rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink3);
  font-weight: 500;
}
.axgroup + .sect, .dims + .sect, .roomnote + .sect, .purposelist + .sect { margin-top: 20px; }
.purposelist { display: grid; grid-template-columns: 1fr 1fr; gap: 7px; }
.purposelist button {
  text-align: left; padding: 9px 11px; border: 1px solid var(--line);
  border-radius: 10px; background: var(--paper); line-height: 1.3;
}
.purposelist button:hover { border-color: var(--ink3); }
.purposelist button[aria-pressed="true"] { border-color: var(--ink); box-shadow: inset 0 0 0 1px var(--ink); }
.purposelist b { display: block; font-size: .85rem; font-weight: 500; }
.purposelist span { display: block; font-size: .73rem; color: var(--ink3); margin-top: 2px; }
.dims .axis { padding: 5px 0; }
.roomsize {
  margin: 12px 0 0; font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: .78rem; letter-spacing: .04em; font-variant-numeric: tabular-nums;
}
.roomnote { margin: 4px 0 0; font-size: .82rem; color: var(--ink2); line-height: 1.45; }
.presets { display: grid; gap: 6px; }
.presets button {
  display: grid; grid-template-columns: 1fr auto; align-items: baseline; gap: 4px 10px;
  text-align: left; padding: 8px 11px; border: 1px solid var(--line);
  border-radius: 10px; background: var(--paper);
}
.presets button:hover { border-color: var(--ink3); }
.presets button[aria-pressed="true"] { border-color: var(--ink); box-shadow: inset 0 0 0 1px var(--ink); }
.presets b { font-size: .85rem; font-weight: 500; }
.presets i {
  font-style: normal; font-size: .74rem; color: var(--ink3);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-variant-numeric: tabular-nums;
}
.presets span { grid-column: 1 / -1; font-size: .73rem; color: var(--ink3); }

/* ── measures ─────────────────────────────────────────────────────────── */

.m { padding: 13px 0; border-top: 1px solid var(--line2); }
.m:first-child { border-top: 0; padding-top: 0; }
.m .top { display: flex; align-items: baseline; gap: 8px; }
.m .nm { font-size: .92rem; font-weight: 500; flex: 1; }
.m .sc { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .82rem; font-variant-numeric: tabular-nums; }
.m .sc.g { color: var(--good); } .m .sc.m { color: var(--mid); } .m .sc.b { color: var(--bad); }
.m .track { height: 3px; border-radius: 2px; background: var(--line); margin: 7px 0 8px; overflow: hidden; }
.m .fill { height: 100%; background: var(--ink); transition: width .3s ease; }
.m .vl { font-size: .76rem; color: var(--ink3); font-variant-numeric: tabular-nums; }
.m .vd { margin: 4px 0 0; font-size: .82rem; color: var(--ink2); line-height: 1.48; }
.sw { display: inline-flex; gap: 3px; vertical-align: -2px; margin-left: 6px; }
.sw i { width: 13px; height: 13px; border-radius: 3px; display: block; box-shadow: inset 0 0 0 1px #0000001f; }
.checks { list-style: none; margin: 7px 0 0; padding: 0; font-size: .8rem; color: var(--ink2); }
.checks li { display: flex; gap: 7px; padding: 2px 0; line-height: 1.42; }
.checks li::before { content: "○"; color: var(--bad); font-size: .8em; line-height: 1.7; }
.checks li.ok::before { content: "●"; color: var(--good); }
.plan { margin-top: 10px; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; background: var(--paper); }
.plan svg { display: block; width: 100%; height: auto; }
.plancap { margin: 5px 0 0; font-size: .72rem; color: var(--ink3); }
.total { margin-top: 14px; padding-top: 12px; border-top: 1px solid var(--line); display: flex; justify-content: space-between; align-items: baseline; }
.total span { font-size: .72rem; letter-spacing: .14em; text-transform: uppercase; color: var(--ink3); }
.total b { font-family: var(--display); font-size: 1.9rem; font-weight: 400; line-height: 1; }
.weakest { margin: 6px 0 0; font-size: .8rem; color: var(--ink2); }
.weakest b { font-weight: 500; color: var(--ink); }

/* ── styles ───────────────────────────────────────────────────────────── */

.cross { display: flex; align-items: center; gap: 6px; margin-bottom: 14px; }
.cross select {
  flex: 1; min-width: 0; font: inherit; font-size: .82rem; padding: 6px 7px;
  border: 1px solid var(--line); border-radius: 8px; background: var(--paper); color: inherit;
}
.cross span { color: var(--ink3); }
.cross button { padding: 6px 11px; border: 1px solid var(--ink); border-radius: 8px; font-size: .82rem; background: var(--ink); color: var(--paper); }
.stylegrid { display: grid; grid-template-columns: 1fr 1fr; gap: 7px; }
.stylegrid button {
  text-align: left; padding: 9px 11px; border: 1px solid var(--line);
  border-radius: 10px; background: var(--paper); line-height: 1.32;
}
.stylegrid button:hover { border-color: var(--ink3); }
.stylegrid b { display: block; font-size: .85rem; font-weight: 500; }
.stylegrid i { font-style: normal; font-size: .72rem; color: var(--ink3); font-variant-numeric: tabular-nums; }
.stylegrid .blurb { display: block; font-size: .73rem; color: var(--ink3); margin-top: 3px; }

/* ── about ────────────────────────────────────────────────────────────── */

.about { border-top: 1px solid var(--line); padding: clamp(30px, 6vw, 56px) 20px clamp(40px, 8vw, 80px); }
.aboutin { max-width: 40rem; margin: 0 auto; }
.about h2 { font-family: var(--display); font-weight: 400; font-size: clamp(1.5rem, 4vw, 2rem); margin: 0 0 .6rem; letter-spacing: -.01em; }
.about p { margin: 0 0 .9rem; color: var(--ink2); }
.about strong { color: var(--ink); font-weight: 500; }
.about .fine { font-size: .82rem; color: var(--ink3); margin-top: 1.6rem; }

/* ── toast ────────────────────────────────────────────────────────────── */

.toast {
  position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%);
  background: var(--ink); color: var(--paper);
  padding: 9px 16px; border-radius: 999px; font-size: .84rem;
  box-shadow: 0 8px 24px -8px #19161266; z-index: 40;
  animation: pop .2s ease;
}
@keyframes pop { from { opacity: 0; transform: translate(-50%, 6px); } }

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