/* UC Berkeley palette: Berkeley Blue #002676, California Gold #FDB515, Bay Fog #DDD5C7.
   Three theme states: no data-theme = follow the OS, data-theme="light"/"dark" = explicit. */
:root {
  --blue: #002676; --gold: #fdb515;
  --bg: #f7f5f0; --fg: #1a1f2b; --muted: #55606e; --line: #ddd5c7; --card: #fff;
  --link: #002676; --accent: #002676; --accent-fg: #fff;
  --ok: #00664f; --ok-bg: #e0f3ec;
  --warn: #6b4a00; --warn-bg: #ffefc2; --error: #9b1c1c; --error-bg: #fde4e1;
  --bar: #002676; --bar-fg: #fff; --bar-over: #9b1c1c; --bar-over-fg: #fff;
  --bar-sat: 55%; --bar-light: 38%;
  --topbar: #002676; --topbar-fg: #fff; --topbar-muted: #c9d3e6;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0a1428; --fg: #f1efe9; --muted: #a9b4c6; --line: #24365e; --card: #111f3d;
    --link: #fdb515; --accent: #fdb515; --accent-fg: #002676;
    --ok: #7fdcc0; --ok-bg: #0e3b33;
    --warn: #ffd57a; --warn-bg: #4a3500; --error: #ffaaa0; --error-bg: #5c1616;
    --bar: #3f6fd1; --bar-fg: #f1efe9; --bar-over: #b3342a; --bar-over-fg: #fff;
    --bar-sat: 58%; --bar-light: 58%;
    --topbar: #06102a; --topbar-fg: #f1efe9; --topbar-muted: #a9b4c6;
  }
}
:root[data-theme="dark"] {
  --bg: #0a1428; --fg: #f1efe9; --muted: #a9b4c6; --line: #24365e; --card: #111f3d;
  --link: #fdb515; --accent: #fdb515; --accent-fg: #002676;
  --ok: #7fdcc0; --ok-bg: #0e3b33;
  --warn: #ffd57a; --warn-bg: #4a3500; --error: #ffaaa0; --error-bg: #5c1616;
  --bar: #3f6fd1; --bar-fg: #f1efe9; --bar-over: #b3342a; --bar-over-fg: #fff;
  --bar-sat: 58%; --bar-light: 58%;
  --topbar: #06102a; --topbar-fg: #f1efe9; --topbar-muted: #a9b4c6;
}
* { box-sizing: border-box; }
body { margin: 0; font: 15px/1.5 system-ui, sans-serif; background: var(--bg); color: var(--fg); }
a { color: var(--link); }
main { max-width: 1100px; margin: 0 auto; padding: 1rem; }
h1 { font-size: 1.5rem; margin: .5rem 0 1rem; color: var(--fg); }
h2 { font-size: 1.15rem; margin: 1.5rem 0 .5rem; }

.topbar { display: flex; flex-wrap: wrap; gap: .5rem 1.5rem; align-items: center;
  padding: .7rem 1rem; background: var(--topbar); color: var(--topbar-fg);
  border-bottom: 4px solid var(--gold); }
.topbar a { color: var(--topbar-fg); text-decoration: none; }
.topbar nav a:hover, .whoami button.link:hover { color: var(--gold); }
.brand { font-weight: 700; font-size: 1.05rem; }
.topbar nav { display: flex; gap: 1rem; flex: 1; }
.whoami { display: flex; gap: .75rem; align-items: center; color: var(--topbar-muted); margin: 0; }
.whoami button.link { color: var(--topbar-fg); }
.theme-toggle { background: none; border: 1px solid rgba(255, 255, 255, .35); color: var(--topbar-fg);
  border-radius: 999px; padding: .15rem .6rem; font-size: .8rem; cursor: pointer; line-height: 1.4; }
.theme-toggle:hover { border-color: var(--gold); color: var(--gold); filter: none; }
.push-right { margin-left: auto; }

.narrow { max-width: 420px; }
.stack { display: grid; gap: .75rem; max-width: 480px; }
.stack label { display: grid; gap: .25rem; font-weight: 500; }
.inline { display: inline; margin: 0; }
.row { display: flex; gap: .5rem; align-items: center; flex-wrap: wrap; }
.muted { color: var(--muted); }

input, select, textarea { font: inherit; padding: .4rem .5rem; border: 1px solid var(--line);
  border-radius: 6px; background: var(--card); color: var(--fg); }
button, .button { font: inherit; padding: .4rem .9rem; border: 0; border-radius: 6px;
  background: var(--accent); color: var(--accent-fg); cursor: pointer; text-decoration: none;
  display: inline-block; }
button.secondary { background: transparent; color: var(--fg); border: 1px solid var(--line); }
button.danger { background: var(--error); color: var(--card); }
button.link { background: none; color: inherit; padding: 0; text-decoration: underline; }
button:hover, .button:hover { filter: brightness(1.15); }
button.link:hover { filter: none; }

.banner { padding: .6rem .8rem; border-radius: 6px; }
.banner.ok { background: var(--ok-bg); color: var(--ok); }
.banner.warn { background: var(--warn-bg); color: var(--warn); }
.banner.error { background: var(--error-bg); color: var(--error); }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; background: var(--card); }
th, td { text-align: left; padding: .5rem .6rem; border-bottom: 1px solid var(--line);
  vertical-align: top; }
thead th { border-bottom: 2px solid var(--line); }
th { font-size: .8rem; text-transform: uppercase; letter-spacing: .03em; color: var(--muted); }
.badge { display: inline-block; padding: .05rem .5rem; border-radius: 999px; font-size: .8rem; }
.badge.available { background: var(--ok-bg); color: var(--ok); }
.badge.out { background: var(--warn-bg); color: var(--warn); }
.badge.retired { background: var(--line); color: var(--muted); }
dl.details { display: grid; grid-template-columns: max-content 1fr; gap: .3rem 1rem; }
dl.details dt { color: var(--muted); }
dl.details dd { margin: 0; }
.prewrap { white-space: pre-wrap; }
.pills { display: flex; flex-wrap: wrap; gap: .4rem; margin-bottom: 1rem; }
.pills a { padding: .2rem .75rem; border: 1px solid var(--line); border-radius: 999px;
  text-decoration: none; background: var(--card); color: var(--fg); }
.pills a[aria-current] { background: var(--gold); color: var(--blue); border-color: var(--gold);
  font-weight: 600; }

.timeline { overflow-x: auto; border: 1px solid var(--line); border-radius: 8px;
  background: var(--card); --gutter: 11rem; }
.timeline-grid { min-width: 900px; padding: .5rem .75rem 0; }
.tl-row { display: grid; grid-template-columns: var(--gutter) 1fr; align-items: stretch; }
.tl-label { padding: .25rem .6rem .25rem 0; font-size: .85rem; font-weight: 600;
  display: flex; align-items: center; gap: .35rem; min-width: 0; }
.tl-label.small { font-size: .75rem; font-weight: 400; color: var(--muted); }
.tl-track { position: relative; min-width: 0; }
.timeline-head { height: 1.3rem; margin-bottom: .25rem; }
.timeline-tick { position: absolute; top: 0; font-size: .7rem; color: var(--muted); white-space: nowrap; }
.timeline-body { position: relative; border-top: 1px solid var(--line); }
.timeline-today { position: absolute; top: 0; bottom: 0; width: 0; border-left: 2px dashed var(--error);
  pointer-events: none; }
.timeline-group { border-bottom: 1px solid var(--line); }
.timeline-group:last-child { border-bottom: 0; }
.timeline-group > summary { cursor: pointer; list-style: none; padding: .15rem 0; }
.timeline-group > summary::-webkit-details-marker { display: none; }
.timeline-group > summary:hover .tl-label { color: var(--link); }
.caret { border: solid currentColor; border-width: 0 2px 2px 0; padding: 2px; flex: none;
  transform: rotate(-45deg); transition: transform .12s ease; }
.timeline-group[open] > summary .caret { transform: rotate(45deg); }
/* Open a type and the muxed overview gives way to a row per board. */
.timeline-group[open] .timeline-mux { display: none; }
.slot-row { border-top: 1px dashed var(--line); }
.installed-note { padding: .3rem 0; }
.swatch { width: .7rem; height: .7rem; border-radius: 2px; flex: none;
  background: hsl(var(--hue) var(--bar-sat) var(--bar-light)); }

/* Collapsed overview: one thin band per board, stacked into a single line. */
.timeline-mux { display: flex; flex-direction: column; min-height: 1.9rem; gap: 1px; }
.mux-band { position: relative; flex: 1 0 4px; }

.timeline-lane { position: relative; height: 1.9rem; }
.timeline-bar { position: absolute; top: .2rem; bottom: .2rem; min-width: 4px;
  background: hsl(var(--hue, 220) var(--bar-sat) var(--bar-light));
  color: var(--bar-fg); border-radius: 4px; font-size: .75rem; line-height: 1.5rem;
  text-decoration: none; display: block; }
.timeline-bar.thin { top: 0; bottom: 0; border-radius: 2px; }
.timeline-bar:hover { filter: brightness(1.15); }
.timeline-bar.over { background: var(--bar-over); color: var(--bar-over-fg);
  outline: 1px solid var(--bar-over); }
.timeline-bar-text { display: block; padding: 0 .4rem; white-space: nowrap; overflow: hidden;
  text-overflow: ellipsis; }
.timeline-nav a { white-space: nowrap; }

/* Hover card. The markup inside each bar is only a content source; app.js copies it
   into #tip on <body> so the timeline's scroll container can't clip it. */
.tooltip { display: none; }
#tip { display: none; position: absolute; z-index: 50; min-width: 15rem; max-width: 22rem;
  padding: .5rem .6rem; border-radius: 6px; background: var(--card); color: var(--fg);
  border: 1px solid var(--line); box-shadow: 0 6px 20px rgb(0 0 0 / .18);
  line-height: 1.4; font-size: .78rem; pointer-events: none; }
#tip.show { display: block; }
#tip strong { display: block; margin-bottom: .25rem; font-size: .85rem; }
.tooltip-row { display: block; }
.tooltip-row .muted { display: inline-block; min-width: 4.5rem; }
.over-note { color: var(--error); font-weight: 600; margin-top: .25rem; }
ul.tight { margin: .3rem 0; padding-left: 1.1rem; }
input.qty { width: 5rem; }
.board-group { font-size: 1rem; margin: 1.25rem 0 .4rem; }
.inline-label { display: inline-flex; align-items: center; gap: .35rem; font-size: .85rem; }

/* Admin sections: the actions for a section sit directly under its heading. */
.actions { display: flex; flex-wrap: wrap; gap: .5rem 1rem; align-items: center;
  margin: .5rem 0 .75rem; }
.add-form { margin-top: .75rem; }
.panel { border: 1px solid var(--line); border-radius: 8px; background: var(--card);
  padding: .5rem .75rem; margin-bottom: 1rem; }
.panel > summary { cursor: pointer; font-weight: 500; }
.panel > summary:hover { color: var(--link); }
.panel p { margin: .6rem 0; max-width: 60ch; }
.panel code { font-size: .85em; background: var(--bg); padding: 0 .25rem; border-radius: 3px; }