/* ---------- tokens ---------- */
:root {
  --bg: #0a0b0d;
  --surface: #121417;
  --raised: #1a1d21;
  --line: #262a30;
  --line-strong: #3b414a;
  --track: #2c3037;
  --text: #f2f3f5;
  --text-2: #a3a9b2;
  --text-3: #6c737d;
  --on: #f2b544;
  --on-ink: #14110a;
  --water: #4fb8d8;
  --water-fill: #10262e;
  --water-line: #24586a;
  --alert: #ff6a55;
  --alert-ink: #1a0b08;
  --room: #14171b;
  --room-lit: #332813;
  --room-lit-line: #5d4c25;
  --mark-off: #5b626c;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI Variable Text", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --quick: 160ms;
}

/* ---------- base ---------- */
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { height: 100%; margin: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.35;
  -webkit-font-smoothing: antialiased;
  -webkit-text-size-adjust: 100%;
  overflow: hidden;
}
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; -webkit-tap-highlight-color: transparent; }
button:disabled { cursor: default; }
a { color: inherit; text-decoration: none; -webkit-tap-highlight-color: transparent; }
svg { display: block; }
h1, h2, p { margin: 0; }
.num { font-variant-numeric: tabular-nums; }
:focus { outline: none; }
:focus-visible { outline: 2px solid var(--text); outline-offset: 2px; }
.fatal { margin: 0; padding: 32px 20px; color: var(--text-2); font-size: 15px; max-width: 520px; }
.fatal b { display: block; color: var(--text); font-size: 17px; font-weight: 600; margin-bottom: 6px; }

/* ---------- shell: phone first ---------- */
.app { height: 100vh; height: 100dvh; display: flex; flex-direction: column; }
.side { display: none; }
.top {
  flex: 0 0 52px; display: flex; align-items: center; justify-content: space-between;
  padding: 0 16px; padding-top: env(safe-area-inset-top);
  box-sizing: content-box;
}
.wordmark { display: flex; align-items: center; gap: 10px; font-size: 17px; font-weight: 600; letter-spacing: -0.01em; }
.wordmark svg { width: 20px; height: 20px; }
.stage { flex: 1 1 auto; min-height: 0; min-width: 0; display: flex; flex-direction: column; position: relative; }
.view { flex: 1 1 auto; min-height: 0; min-width: 0; display: flex; flex-direction: column; position: relative; }

.sec { margin: 6px 0 8px; font-size: 11px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-3); }

/* ---------- map ---------- */
.floorbar { flex: 0 0 auto; display: flex; align-items: flex-end; border-bottom: 1px solid var(--line); padding: 0 8px; min-width: 0; }
.floors { display: flex; flex: 1 1 auto; min-width: 0; overflow-x: auto; scrollbar-width: none; }
.floors::-webkit-scrollbar { display: none; }
.floor {
  flex: 1 0 auto; height: 44px; padding: 0 8px; display: flex; align-items: center; justify-content: center; gap: 6px;
  font-size: 13px; font-weight: 500; color: var(--text-2); border-bottom: 2px solid transparent;
  white-space: nowrap; transition: color var(--quick);
}
.floor[aria-selected="true"] { color: var(--text); border-bottom-color: var(--text); font-weight: 600; }
.floor:focus-visible { outline-offset: -3px; }
.dot-alert { width: 6px; height: 6px; border-radius: 50%; background: var(--alert); flex: 0 0 auto; }

.mapwrap {
  position: relative; flex: 1 1 auto; min-height: 0; min-width: 0;
  background-image: radial-gradient(circle, #1b1e23 1px, transparent 1.2px);
  background-size: 22px 22px; background-position: 11px 11px;
}
.mapscroll {
  position: absolute; inset: 0; overflow: auto; overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch; scrollbar-width: thin; scrollbar-color: var(--line-strong) transparent;
}
.map { display: block; }

/* the zoom buttons sit in a strip the fitted map never draws into, so they cannot cover a room */
.zoom {
  position: absolute; right: 12px; bottom: 6px; display: flex; z-index: 2;
  border: 1px solid var(--line-strong); border-radius: 10px; background: var(--surface);
}
.zoom button { position: relative; width: 44px; height: 32px; display: grid; place-items: center; color: var(--text); }
.zoom button::after { content: ""; position: absolute; inset: -6px 0; }
.zoom button + button { border-left: 1px solid var(--line-strong); }
.zoom button:disabled { color: var(--text-3); }
.zoom button:focus-visible { outline-offset: -2px; border-radius: 9px; }
.zoom svg { width: 16px; height: 16px; }

/* rooms and marks */
.room-g { cursor: pointer; }
.rm { fill: var(--room); stroke: var(--line-strong); stroke-width: 1; stroke-linejoin: round; }
.rm-lit { fill: var(--room-lit); fill-opacity: 0; stroke: none; pointer-events: none; transition: fill-opacity var(--quick); }
.room-g[data-lit="true"] .rm { stroke: var(--room-lit-line); }
.room-g[data-look="water"] .rm { fill: var(--water-fill); stroke: var(--water-line); }
.room-g[data-outside="true"] .rm { stroke-dasharray: 5 4; }
.room-g:focus-visible .rm { stroke: var(--text); stroke-width: 2; stroke-dasharray: none; }
.sel-outline { fill: none; stroke: var(--text); stroke-width: 2; stroke-linejoin: round; pointer-events: none; }
.rl { fill: var(--text-2); font-family: var(--font); font-weight: 500; text-anchor: middle; dominant-baseline: central; pointer-events: none; }
.room-g[data-lit="true"] .rl { fill: #f4e3bd; }
.room-g[data-look="water"] .rl { fill: #bfe6f2; }
.room-g[data-selected="true"] .rl { fill: var(--text); font-weight: 600; }
.mk { stroke-width: 1.2; pointer-events: none; }
.mk[data-on="false"] { fill: none; stroke: var(--mark-off); }
.mk[data-on="true"] { fill: var(--on); stroke: var(--on); }
.mk-t, .mk-v, .mk-more {
  font-family: var(--font); font-weight: 500; dominant-baseline: central; font-variant-numeric: tabular-nums; pointer-events: none;
}
.mk-t[data-on="false"] { fill: var(--text-2); }
.mk-t[data-on="true"] { fill: var(--on); }
.mk-v { fill: var(--text-2); }
.mk-more { fill: var(--text-3); }
.mk-alert { fill: var(--alert); pointer-events: none; }

/* ---------- room panel (a panel over the lower part of a phone screen) ---------- */
.room {
  flex: 0 0 48vh; flex-basis: 48dvh; min-height: 0; display: flex; flex-direction: column;
  background: var(--surface); border-top: 1px solid var(--line); border-radius: 18px 18px 0 0;
  margin-top: -1px; overflow: hidden; position: relative; z-index: 3;
}
.grab { flex: 0 0 auto; display: grid; place-items: center; height: 16px; }
.grab i { width: 36px; height: 4px; border-radius: 2px; background: var(--line-strong); }
.room-head { flex: 0 0 auto; display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; padding: 2px 10px 12px 16px; }
.room-head > div { min-width: 0; }
.room-head h1 { font-size: 22px; line-height: 1.15; font-weight: 600; letter-spacing: -0.02em; overflow-wrap: anywhere; }
.room-head p { margin-top: 4px; font-size: 13px; color: var(--text-2); }
.room-head p b { color: var(--text-2); font-weight: 500; }
.room-head p b.on { color: var(--on); font-weight: 600; }
.room-head p > * + *::before { content: "\00a0\00a0\00b7\00a0\00a0"; color: var(--text-3); font-weight: 400; }
.x { position: relative; width: 44px; height: 44px; margin-top: -6px; display: grid; place-items: center; flex: 0 0 auto; border-radius: 50%; }
.x::before { content: ""; position: absolute; inset: 6px; border-radius: 50%; background: var(--raised); }
.x svg { position: relative; width: 14px; height: 14px; }
.room-body { flex: 1 1 auto; min-height: 0; overflow-y: auto; overscroll-behavior: contain; -webkit-overflow-scrolling: touch; padding: 0 16px 20px; scrollbar-width: thin; scrollbar-color: var(--line-strong) transparent; }
.room-body .sec:not(:first-child) { margin-top: 18px; }

.banner { display: flex; gap: 10px; align-items: flex-start; margin: 0 0 14px; padding: 11px 12px; border: 1px solid rgba(255, 106, 85, 0.45); border-radius: 12px; background: rgba(255, 106, 85, 0.08); }
.banner svg { width: 18px; height: 18px; color: var(--alert); flex: 0 0 auto; margin-top: 1px; }
.banner-title { font-size: 14px; font-weight: 600; }
.banner-meta { margin-top: 2px; font-size: 12.5px; color: var(--text-2); }
.banner-meta b { color: var(--alert); font-weight: 600; }
.banner-detail { margin-top: 4px; font-size: 12.5px; color: var(--text-2); }

.card { background: var(--raised); border-radius: 12px; }
.row { padding: 6px 8px 6px 14px; }
.row + .row { border-top: 1px solid var(--line); }
.row-main { display: flex; align-items: center; gap: 12px; min-height: 44px; }
.ico { width: 18px; height: 18px; color: var(--text-3); flex: 0 0 auto; transition: color var(--quick); }
.ico.on { color: var(--on); }
.name { flex: 1 1 auto; min-width: 0; font-size: 15px; font-weight: 500; overflow-wrap: anywhere; }
.val { font-size: 14px; color: var(--text-2); white-space: nowrap; padding-right: 6px; }
.val.on { color: var(--text); }

/* switch: 44 px target, 44 by 26 visible pill */
.sw { position: relative; width: 50px; height: 44px; flex: 0 0 auto; border-radius: 13px; }
.sw::before { content: ""; position: absolute; left: 3px; top: 9px; width: 44px; height: 26px; border-radius: 13px; background: var(--track); transition: background-color var(--quick); }
.sw::after { content: ""; position: absolute; top: 12px; left: 6px; width: 20px; height: 20px; border-radius: 50%; background: #8b929c; transition: transform var(--quick), background-color var(--quick); }
.sw[aria-checked="true"]::before { background: var(--on); }
.sw[aria-checked="true"]::after { transform: translateX(18px); background: var(--on-ink); }
.sw:focus-visible { outline-offset: -6px; }

/* brightness slider */
.slider { margin: -10px 6px -4px 30px; }
.slider input {
  -webkit-appearance: none; appearance: none; display: block; width: 100%; height: 44px; margin: 0; padding: 0;
  background: transparent; touch-action: pan-y; cursor: pointer; --pct: 50%;
}
.slider input::-webkit-slider-runnable-track { height: 4px; border-radius: 2px; background: linear-gradient(to right, var(--on) var(--pct), var(--track) var(--pct)); }
.slider input::-webkit-slider-thumb { -webkit-appearance: none; appearance: none; width: 18px; height: 18px; margin-top: -7px; border: 0; border-radius: 50%; background: var(--text); }
.slider input::-moz-range-track { height: 4px; border-radius: 2px; background: var(--track); }
.slider input::-moz-range-progress { height: 4px; border-radius: 2px; background: var(--on); }
.slider input::-moz-range-thumb { width: 18px; height: 18px; border: 0; border-radius: 50%; background: var(--text); }
.slider input:focus-visible { outline-offset: -4px; border-radius: 8px; }

/* set values with minus and plus, and readings beside them */
.steps { display: flex; gap: 14px; margin: 0 0 6px 30px; }
.step { flex: 1 1 0; min-width: 0; }
.step-l { font-size: 12px; color: var(--text-2); margin-bottom: 0; }
.step-c { display: flex; align-items: center; justify-content: space-between; min-height: 44px; }
.step-c.read { justify-content: flex-start; }
.step-c button { position: relative; width: 44px; height: 44px; display: grid; place-items: center; flex: 0 0 auto; border-radius: 50%; margin: 0 -5px; }
.step-c button::before { content: ""; position: absolute; inset: 5px; border-radius: 50%; border: 1px solid var(--line-strong); }
.step-c button svg { position: relative; width: 14px; height: 14px; }
.step-c button:disabled { color: var(--text-3); }
.step-c button:disabled::before { border-color: var(--line); }
.step-c button:focus-visible { outline-offset: -3px; }
.step-v { font-size: 26px; font-weight: 300; letter-spacing: -0.02em; white-space: nowrap; }

/* ---------- overview ---------- */
.scroll { flex: 1 1 auto; min-height: 0; overflow-y: auto; overscroll-behavior: contain; -webkit-overflow-scrolling: touch; padding: 4px 16px 28px; scrollbar-width: thin; scrollbar-color: var(--line-strong) transparent; }
.view-title { font-size: 22px; font-weight: 600; letter-spacing: -0.02em; margin: 4px 0 14px; }
.tiles { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.tile {
  background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 12px 12px 13px; min-height: 96px;
  display: flex; flex-direction: column; text-align: left; min-width: 0; transition: border-color var(--quick), background-color var(--quick);
}
button.tile[aria-pressed="true"] { border-color: var(--text); background: var(--raised); }
.tile-l { font-size: 12px; font-weight: 500; color: var(--text-2); display: flex; align-items: center; gap: 7px; }
.tile-l svg { width: 15px; height: 15px; }
.tile-v { margin-top: auto; padding-top: 10px; font-size: 26px; font-weight: 300; letter-spacing: -0.02em; line-height: 1.1; transition: color var(--quick); }
.tile-v.on { color: var(--on); }
.tile-s { font-size: 12px; color: var(--text-2); margin-top: 3px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 100%; }

.ov-floor { margin-top: 24px; }
.ov-floor .sec { margin: 0 0 8px; }
.ov-rooms { display: grid; grid-template-columns: minmax(0, 1fr); gap: 8px; }
.ov-room { display: block; background: var(--raised); border-radius: 12px; padding: 12px 14px 13px; min-width: 0; }
.ov-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.ov-name { font-size: 15px; font-weight: 600; min-width: 0; overflow-wrap: anywhere; }
.ov-head svg { width: 14px; height: 14px; color: var(--text-3); flex: 0 0 auto; }
.ov-line { display: flex; gap: 9px; margin-top: 7px; font-size: 13px; line-height: 1.45; color: var(--text-2); }
.ov-line > svg { width: 15px; height: 15px; color: var(--text-3); flex: 0 0 auto; margin-top: 2px; }
.ov-items { min-width: 0; overflow-wrap: anywhere; }
.ov-items > span + span::before { content: "\00b7"; margin: 0 6px; color: var(--text-3); }
.ov-ds { color: var(--text); }
.ov-ds.on { color: var(--on); }
.ov-none { margin-top: 20px; color: var(--text-2); font-size: 14px; }

/* ---------- alerts ---------- */
.alert-list { display: flex; flex-direction: column; }
.alert-row { display: flex; align-items: center; gap: 12px; padding: 13px 12px 13px 14px; min-height: 64px; }
.alert-row:not([hidden]) ~ .alert-row { border-top: 1px solid var(--line); }
.alert-row > svg:first-child { width: 20px; height: 20px; color: var(--alert); flex: 0 0 auto; }
.alert-row > svg:last-child { width: 14px; height: 14px; color: var(--text-3); flex: 0 0 auto; }
.alert-text { flex: 1 1 auto; min-width: 0; }
.alert-title { font-size: 15px; font-weight: 600; }
.alert-meta { margin-top: 3px; font-size: 13px; color: var(--text-2); }
.alert-meta b { color: var(--alert); font-weight: 600; }
.alert-meta span::before { content: "\00a0\00b7\00a0"; color: var(--text-3); }
.empty { padding: 28px 0; color: var(--text-2); font-size: 15px; }

/* ---------- tab bar (phone) ---------- */
.tabbar { flex: 0 0 auto; display: flex; background: var(--surface); border-top: 1px solid var(--line); padding-bottom: env(safe-area-inset-bottom); position: relative; z-index: 4; }
.tab { flex: 1 1 0; height: 60px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 3px; font-size: 11px; font-weight: 500; color: var(--text-3); position: relative; transition: color var(--quick); }
.tab svg { width: 22px; height: 22px; }
.tab[aria-current="page"] { color: var(--text); }
.tab:focus-visible { outline-offset: -4px; border-radius: 10px; }
.badge { min-width: 17px; height: 17px; padding: 0 5px; border-radius: 9px; background: var(--alert); color: var(--alert-ink); font-size: 11px; font-weight: 700; display: grid; place-items: center; }
.tab .badge { position: absolute; top: 7px; left: calc(50% + 5px); }

/* a short phone screen with a room open: the top bar gives its space to the map */
@media (max-width: 1023px) and (max-height: 739px) {
  .app.has-room .top { display: none; }
}

/* ---------- laptop ---------- */
@media (min-width: 1024px) {
  .app { display: grid; grid-template-columns: 264px minmax(0, 1fr); grid-template-rows: 100vh; }
  .app.has-room { grid-template-columns: 264px minmax(0, 1fr) 400px; }
  .top, .tabbar, .grab { display: none; }
  .side { display: flex; flex-direction: column; border-right: 1px solid var(--line); padding: 22px 16px 16px; min-width: 0; overflow-y: auto; scrollbar-width: none; }
  .side .wordmark { padding: 0 8px 22px; font-size: 18px; }
  .nav { display: flex; flex-direction: column; gap: 2px; }
  .nav a { display: flex; align-items: center; gap: 12px; height: 40px; padding: 0 10px; border-radius: 9px; color: var(--text-2); font-size: 14.5px; font-weight: 500; transition: background-color var(--quick), color var(--quick); }
  .nav a svg { width: 19px; height: 19px; }
  .nav a:hover { color: var(--text); }
  .nav a[aria-current="page"] { background: var(--raised); color: var(--text); }
  .nav .badge { margin-left: auto; }
  .side .sec { margin: 30px 8px 10px; }

  .floorbar { padding: 14px 28px 0; }
  .floors { flex: 0 1 auto; gap: 26px; }
  .floor { flex: 0 0 auto; padding: 0; font-size: 14.5px; height: 42px; }
  .floor:hover { color: var(--text); }
  .mapwrap { background-size: 26px 26px; background-position: 13px 13px; }
  .zoom { top: 16px; right: 28px; bottom: auto; }
  .zoom button { width: 40px; height: 34px; }
  .zoom button::after { content: none; }
  .room-g:hover .rm { stroke: var(--text-2); }

  .room { flex: none; border-top: 0; border-left: 1px solid var(--line); border-radius: 0; margin: 0; }
  .room-head { padding: 26px 18px 16px 24px; }
  .room-head h1 { font-size: 26px; }
  .room-head p { font-size: 14px; }
  .room-body { padding: 0 24px 24px; }

  .scroll { padding: 26px 28px 40px; }
  .view-title { font-size: 26px; margin: 0 0 20px; }
  .tiles-main { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; max-width: 920px; }
  .tiles-main .tile { min-height: 112px; padding: 14px 16px 15px; }
  .tiles-main .tile-l { font-size: 13px; }
  .tiles-main .tile-v { font-size: 32px; }
  .tiles-main .tile-s { font-size: 13px; }
  button.tile:hover { border-color: var(--line-strong); }
  button.tile[aria-pressed="true"]:hover { border-color: var(--text); }
  .ov-floor { margin-top: 32px; }
  .ov-rooms { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 12px; }
  .ov-room { transition: background-color var(--quick); }
  .ov-room:hover { background: #20242a; }
  .alert-list { max-width: 720px; }
  .alert-list { overflow: hidden; }
  .alert-row:hover { background: #20242a; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; scroll-behavior: auto !important; }
}