/* Tech Room Board — dark-first (always-on wall display). Light theme swaps the ground;
   presence colours are semantic and stay identical in both themes. */
:root {
  --bg: #0F1216;
  --bg-2: #151A20;
  --fg: #ECEFF3;
  --fg-muted: #8A94A3;
  --line: #252C35;

  --here: #22A06B;
  --away: #E39B1B;
  --meeting: #7B61C9;
  --branch: #2F80C4;
  --off: #4B5563;

  --on-state: #FFFFFF;
  --strip-bg: rgba(255, 255, 255, .16);
  --strip-busy: rgba(0, 0, 0, .46);
  --strip-bg-bar: rgba(255, 255, 255, .10);   /* strip on the panel-coloured group bar */
  --chip-shadow: 0 10px 28px rgba(0, 0, 0, .45);
  --preview-bg: rgba(0, 0, 0, .38);

  --font-display: "Bricolage Grotesque", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-ui: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  color-scheme: dark;
}
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --bg: #F3F4F6; --bg-2: #FFFFFF; --fg: #14181E; --fg-muted: #5B6472; --line: #DDE1E7;
    --off: #8B93A1; --strip-bg: rgba(255, 255, 255, .26); --strip-busy: rgba(0, 0, 0, .36);
    --strip-bg-bar: rgba(20, 24, 30, .10);
    --chip-shadow: 0 10px 28px rgba(20, 24, 30, .22);
    color-scheme: light;
  }
}
:root[data-theme="light"] {
  --bg: #F3F4F6; --bg-2: #FFFFFF; --fg: #14181E; --fg-muted: #5B6472; --line: #DDE1E7;
  --off: #8B93A1; --strip-bg: rgba(255, 255, 255, .26); --strip-busy: rgba(0, 0, 0, .36);
  --strip-bg-bar: rgba(20, 24, 30, .10);
  --chip-shadow: 0 10px 28px rgba(20, 24, 30, .22);
  color-scheme: light;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-ui);
  padding-inline: 16px;
  padding-block: 0 env(safe-area-inset-bottom, 0px);
  -webkit-text-size-adjust: 100%;
  overscroll-behavior: none;
}

/* ---- header ---- */
.hdr {
  height: 72px;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.hdr h1 {
  margin: 0;
  font: 700 22px/1 var(--font-display);
  letter-spacing: -.01em;
}
.clock {
  font: 500 20px/1 var(--font-ui);
  font-variant-numeric: tabular-nums;
  color: var(--fg-muted);
  white-space: nowrap;
}
.legend {
  display: flex; gap: 14px; flex-wrap: wrap;
  font: 500 13px/1 var(--font-ui);
  color: var(--fg-muted);
}
/* mode chip: "Tech room wall iPad" on a paired display, "View only" for a signed-out viewer */
.mode {
  padding: 5px 10px; border-radius: 999px; white-space: nowrap;
  font: 600 12px/1 var(--font-ui); letter-spacing: .06em; text-transform: uppercase;
}
.mode.display  { background: var(--here); color: #fff; }
.mode.person   { background: var(--bg-2); color: var(--fg); border: 1px solid var(--line); }
.mode.viewonly { background: var(--bg-2); color: var(--fg-muted); border: 1px solid var(--line); }
.approvals {
  padding: 7px 12px; border-radius: 9px; cursor: pointer; white-space: nowrap;
  background: var(--away); color: #241a02; border: 0;
  font: 600 13px/1 var(--font-ui);
}

/* setup / waiting / approval overlays */
#setup, #waiting, #approvedlg {
  position: fixed; inset: 0; z-index: 10; display: grid; place-items: center;
  background: rgba(0, 0, 0, .6); padding: 16px;
}
.panel {
  width: min(560px, 100%); max-height: 90dvh; overflow-y: auto;
  padding: 28px; border-radius: 18px;
  background: var(--bg-2); border: 1px solid var(--line); color: var(--fg);
}
.panel h2 { margin: 0 0 10px; font: 700 26px/1.1 var(--font-display); text-wrap: balance; }
.panel p  { margin: 0 0 20px; font: 500 15px/1.5 var(--font-ui); color: var(--fg-muted); }
.whorow { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.whobtn {
  min-height: 64px; padding: 12px; border: 1px solid var(--line); border-radius: 12px; cursor: pointer;
  background: var(--bg); color: var(--fg); font: 600 17px/1.2 var(--font-ui);
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 3px;
}
.whobtn:hover:not(:disabled) { border-color: var(--here); }
.whobtn:disabled { opacity: .45; cursor: default; }
.whobtn small { font: 500 12px/1 var(--font-ui); color: var(--fg-muted); }
.whobtn.display { grid-column: 1 / -1; background: var(--bg); }

.req {
  display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  padding: 14px 0; border-top: 1px solid var(--line);
}
.req strong { display: block; font: 600 16px/1.3 var(--font-ui); }
.req small  { font: 500 13px/1.3 var(--font-ui); color: var(--fg-muted); }
.reqbtns { display: flex; gap: 8px; }
.reqbtns button {
  min-height: 44px; padding: 0 18px; border: 0; border-radius: 10px; cursor: pointer;
  font: 600 14px/1 var(--font-ui);
}
.reqbtns button:disabled { opacity: .45; cursor: default; }
.reqbtns .ok   { background: var(--here); color: #fff; }
.reqbtns .deny { background: var(--bg); color: var(--fg-muted); border: 1px solid var(--line); }
.panelclose {
  width: 100%; height: 48px; margin-top: 20px; border: 0; border-radius: 12px; cursor: pointer;
  background: var(--bg); color: var(--fg); border: 1px solid var(--line); font: 600 15px/1 var(--font-ui);
}

.legend span::before {
  content: ""; display: inline-block; width: 10px; height: 10px; border-radius: 50%;
  margin-right: 6px; vertical-align: -1px; background: var(--dot);
}

/* ---- PLS Technology group calendar bar ---- */
.groupbar {
  height: 48px; margin-bottom: 8px; padding: 0 18px;
  border-radius: 14px; background: var(--bg-2); border: 1px solid var(--line);
  display: flex; align-items: center; gap: 16px; color: var(--fg);
  transition: border-color .25s ease;
}
.groupbar.busy { border-color: var(--meeting); }
.groupbar .gname {
  font: 600 13px/1 var(--font-ui); letter-spacing: .08em; text-transform: uppercase;
  color: var(--fg-muted); white-space: nowrap;
}
.groupbar .gtext {
  font: 500 15px/1 var(--font-ui); font-variant-numeric: tabular-nums;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis; flex: 0 1 auto; min-width: 0;
}
.groupbar .strip { position: relative; inset: auto; flex: 1 1 auto; height: 8px; margin-left: 8px; background: var(--strip-bg-bar); }
.groupbar .strip.unknown { background: repeating-linear-gradient(90deg, var(--strip-bg-bar) 0 6px, transparent 6px 12px); }
.groupbar .strip i { background: var(--meeting); }
.groupbar .strip .now { background: var(--fg); }
.groupbar .strip .lbl { display: none; }

/* ---- grid ---- */
#grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  grid-auto-rows: 1fr;
  gap: 14px;
  height: calc(100dvh - 72px - 56px - 10px - env(safe-area-inset-bottom, 0px));
  min-height: 420px;
}
@media (max-width: 640px) {
  .legend { display: none; }
  .approvals { padding: 6px 9px; font-size: 12px; }
  #grid { grid-template-columns: 1fr; grid-auto-rows: minmax(190px, 1fr); height: auto; }
}

/* ---- tile ---- */
.tile {
  position: relative;
  border-radius: 22px;
  background: var(--off);
  color: var(--on-state);
  padding: 22px 24px 40px;
  display: flex; flex-direction: column; justify-content: space-between;
  overflow: hidden;
  cursor: pointer;
  user-select: none; -webkit-user-select: none; -webkit-touch-callout: none;
  touch-action: pan-y;
  transition: background-color .25s ease, transform .12s ease;
  outline: none;
}
.tile:focus-visible { outline: 3px solid var(--fg); outline-offset: 3px; }
.tile.pressed { transform: scale(.985); }
/* only the viewer's own tile is interactive; the others just display */
.tile.readonly { cursor: default; }
.tile.readonly .chooser, .tile.readonly .eta-preview { display: none; }
.name .you {
  display: inline-block; margin-left: 8px; padding: 3px 7px; border-radius: 6px; vertical-align: 1px;
  background: rgba(255, 255, 255, .22); font-size: 11px; letter-spacing: .08em;
}
.tile[data-state="here"]    { background: var(--here); }
.tile[data-state="away"]    { background: var(--away); }
.tile[data-state="meeting"] { background: var(--meeting); }
.tile[data-state="branch"]  { background: var(--branch); }
.tile[data-state="off"]     { background: var(--off); }

/* calendar says busy while the person is marked Here: a quiet hatch, never an auto-flip */
.tile.cal-busy::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: repeating-linear-gradient(135deg, rgba(0,0,0,.10) 0 10px, transparent 10px 22px);
}

.tile .top { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; }
.name {
  font: 600 15px/1.2 var(--font-ui);
  letter-spacing: .08em; text-transform: uppercase; opacity: .92;
}
.cal {
  font: 500 14px/1.3 var(--font-ui);
  font-variant-numeric: tabular-nums;
  text-align: right; opacity: .9; max-width: 55%;
}
.tile .bottom { display: grid; gap: 6px; }
.status {
  font: 700 clamp(38px, 6.5vw, 84px)/.95 var(--font-display);
  letter-spacing: -.02em; text-wrap: balance;
}
.sub {
  font: 500 clamp(16px, 2vw, 20px)/1.3 var(--font-ui);
  font-variant-numeric: tabular-nums; min-height: 1.3em; opacity: .96;
}
.sub.overdue { animation: pulse 1.6s ease-in-out infinite; }
@keyframes pulse { 0%,100% { opacity: 1 } 50% { opacity: .45 } }

/* ---- day strip (free/busy, 8a–5p Central) ---- */
.strip {
  position: absolute; left: 24px; right: 24px; bottom: 16px; height: 8px;
  border-radius: 4px; background: var(--strip-bg);
}
.strip.unknown { background: repeating-linear-gradient(90deg, var(--strip-bg) 0 6px, transparent 6px 12px); }
.strip i { position: absolute; top: 0; bottom: 0; background: var(--strip-busy); border-radius: 4px; }
.strip .now { position: absolute; top: -5px; width: 2px; height: 18px; margin-left: -1px; background: var(--on-state); border-radius: 1px; }
.strip .lbl {
  position: absolute; top: -18px; font: 500 11px/1 var(--font-ui); opacity: .7; letter-spacing: .04em;
}
.strip .lbl.l { left: 0; } .strip .lbl.r { right: 0; }

/* ---- ETA drag preview ---- */
.eta-preview {
  position: absolute; right: 24px; bottom: 64px;
  display: none; padding: 10px 14px; border-radius: 12px;
  background: var(--preview-bg);
  font: 700 clamp(18px, 2.4vw, 26px)/1.1 var(--font-display);
  font-variant-numeric: tabular-nums; white-space: nowrap;
}
.tile.dragging .eta-preview { display: block; }
.tile.dragging .sub { visibility: hidden; }

/* ---- long-press chooser ---- */
.chooser {
  position: absolute; left: 16px; right: 16px; bottom: 36px;
  display: flex; gap: 10px;
  transform: translateY(130%); opacity: 0; pointer-events: none;
  transition: transform .2s ease, opacity .2s ease;
}
.chooser.open { transform: none; opacity: 1; pointer-events: auto; }
.chip {
  flex: 1 1 0; height: 58px; border: 0; border-radius: 14px; color: #fff;
  font: 600 15px/1 var(--font-ui); box-shadow: var(--chip-shadow); cursor: pointer;
  touch-action: manipulation;
}
.chip[data-state="here"]    { background: var(--here); }
.chip[data-state="away"]    { background: var(--away); }
.chip[data-state="meeting"] { background: var(--meeting); }
.chip[data-state="branch"]  { background: var(--branch); }
.chip[data-state="off"]     { background: #3B4350; }
.chip[aria-pressed="true"]  { outline: 3px solid #fff; outline-offset: 2px; }
.chip:focus-visible { outline: 3px solid #fff; outline-offset: 2px; }

/* ---- footer notice (connector state, save errors) ---- */
#notice {
  position: fixed; left: 16px; right: 16px; bottom: calc(6px + env(safe-area-inset-bottom, 0px));
  text-align: center; font: 500 13px/1.3 var(--font-ui); color: var(--fg-muted);
  pointer-events: none;
}
#notice:empty { display: none; }

@media (prefers-reduced-motion: reduce) {
  .tile, .chooser { transition: none; }
  .sub.overdue { animation: none; text-decoration: underline dotted; }
}