/* ===========================================================================
   APP — layout & components for the bright digital-twin dashboard
   ---------------------------------------------------------------------------
   The 3D scene owns the whole viewport; every UI region is a floating frosted
   card. Regions: masthead (brand + badges + KPI rail), left control panel,
   right inspector, bottom transport, legend chip. All cards share one glass
   recipe (.glass) so the surface language is consistent.
   =========================================================================== */

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  background:
    linear-gradient(180deg, var(--sky-zenith) 0%, var(--sky-mid) 55%, var(--sky-horizon) 100%);
  color: var(--ink);
  font: 13px/1.45 var(--font-body);
  overflow: hidden;
  user-select: none;
  -webkit-font-smoothing: antialiased;
}
#scene { position: fixed; inset: 0; display: block; outline: none; }

.mono  { font-family: var(--font-mono); }
.dim   { color: var(--ink-3); }
button { font-family: inherit; color: inherit; }
button:focus-visible, input:focus-visible, select:focus-visible, summary:focus-visible {
  outline: 2px solid var(--aqua);
  outline-offset: 2px;
  border-radius: 6px;
}

/* one shared glass recipe -------------------------------------------------- */
.glass {
  background: var(--glass);
  border: 1px solid var(--stroke);
  border-radius: var(--r-m);
  box-shadow: var(--shadow-1), inset 0 1px 0 var(--stroke-inner);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
}

/* ===========================================================================
   MASTHEAD — brand block · KPI rail · status badges
   =========================================================================== */
#masthead {
  position: fixed; top: 0; left: 0; right: 0; z-index: 30;
  display: flex; align-items: stretch; gap: 12px;
  padding: 14px 16px 0;
  pointer-events: none;
}
#masthead > * { pointer-events: auto; }

.brand {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 18px 10px 14px;
  border-radius: var(--r-m);
  flex: 0 0 auto;
}
.brand-mark {
  width: 34px; height: 34px; flex: 0 0 auto;
  color: var(--aqua-deep);
}
.brand-title {
  font: 700 17px/1.05 var(--font-display);
  letter-spacing: var(--track);
  color: var(--ink);
  white-space: nowrap;
}
.brand-sub {
  margin-top: 3px;
  font: 500 9.5px/1 var(--font-display);
  letter-spacing: var(--track-w);
  text-transform: uppercase;
  color: var(--ink-2);
  white-space: nowrap;
}

/* KPI rail ------------------------------------------------------------------ */
#kpi-rail {
  flex: 1 1 auto;
  display: grid;
  grid-template-columns: repeat(6, minmax(108px, 1fr));
  gap: 8px;
  min-width: 0;
}
.kpi {
  position: relative;
  padding: 8px 12px 7px;
  border-radius: var(--r-m);
  overflow: hidden;
  display: flex; flex-direction: column; justify-content: space-between;
  min-width: 0;
}
.kpi-label {
  font: 600 8.5px/1 var(--font-display);
  letter-spacing: 0.1em;
  overflow: hidden; text-overflow: ellipsis;
  text-transform: uppercase;
  color: var(--ink-2);
  white-space: nowrap;
}
.kpi-value {
  margin-top: 4px;
  font: 700 21px/1 var(--font-display);
  letter-spacing: 0.01em;
  font-variant-numeric: tabular-nums;
  color: var(--ink);
  white-space: nowrap;
}
.kpi-value small {
  font-size: 11px; font-weight: 600; color: var(--ink-2);
  letter-spacing: 0.06em; margin-left: 3px;
}
.kpi-spark {
  position: absolute; left: 0; right: 0; bottom: 0; height: 22px;
  opacity: 0.9; pointer-events: none;
}
.kpi.watch .kpi-value { color: var(--amber); }
.kpi.alarm .kpi-value { color: var(--red); }
.kpi.alarm { border-color: rgba(216, 74, 58, 0.5); background: linear-gradient(180deg, var(--glass-strong), var(--red-soft)); }
.kpi.ok-pill .kpi-value { color: var(--ok); font-size: 15px; letter-spacing: var(--track); padding-top: 3px; }
.kpi.alarm .kpi-value { font-size: 15px; letter-spacing: var(--track); padding-top: 3px; }

/* badges --------------------------------------------------------------------- */
#badge-stack {
  display: flex; flex-direction: column; gap: 6px;
  align-items: flex-end; justify-content: center;
  flex: 0 0 auto;
}
.badge-row { display: flex; gap: 6px; }
.badge {
  display: inline-flex; align-items: center; gap: 6px;
  font: 600 9px/1 var(--font-display);
  letter-spacing: var(--track);
  text-transform: uppercase;
  color: var(--ink-2);
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--glass);
  border: 1px solid var(--stroke);
  box-shadow: var(--shadow-1);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  white-space: nowrap;
}
.badge .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--ink-3); }
.badge.live  { color: var(--aqua-deep); }
.badge.live  .dot { background: var(--aqua); box-shadow: 0 0 8px var(--aqua); }
.badge.rest  { color: var(--amber); }
.badge.rest  .dot { background: var(--amber); }
.badge.off   { color: var(--red); }
.badge.off   .dot { background: var(--red); }
.badge.real  { color: var(--aqua-deep); border-color: rgba(18,174,190,.45); }
.badge.demo  { color: var(--amber); border-color: rgba(221,138,31,.45); }
.badge.alarm-chip { cursor: pointer; }
.badge.alarm-chip.bad {
  color: #fff; background: var(--red); border-color: var(--red);
  animation: chip-pulse 1.6s ease-in-out infinite;
}
.badge.alarm-chip.bad .dot { background: #fff; }
@keyframes chip-pulse { 50% { box-shadow: 0 0 0 6px var(--red-soft); } }

/* ===========================================================================
   LEFT CONTROL PANEL
   =========================================================================== */
#panel {
  position: fixed; z-index: 20;
  top: 88px; left: 16px;
  width: 252px;
  max-height: calc(100vh - 188px);
  overflow-y: auto;
  overscroll-behavior: contain;
  border-radius: var(--r-l);
  scrollbar-width: thin;
  scrollbar-color: var(--stroke-strong) transparent;
}
#panel section { padding: 13px 14px 14px; }
#panel section + section { border-top: 1px solid var(--stroke); }
#panel h2 {
  margin: 0 0 10px;
  font: 700 9.5px/1 var(--font-display);
  letter-spacing: var(--track-w);
  text-transform: uppercase;
  color: var(--ink-2);
  display: flex; align-items: center; gap: 8px;
}
#panel h2::after { content: ""; flex: 1; height: 1px; background: var(--stroke); }

.segmented {
  display: grid; gap: 4px;
  padding: 4px;
  border-radius: 10px;
  background: rgba(126, 164, 182, 0.14);
  border: 1px solid var(--stroke);
}
.segmented.cols-4 { grid-template-columns: repeat(4, 1fr); }
.segmented.cols-2 { grid-template-columns: repeat(2, 1fr); }
.segmented button {
  height: 27px;
  font: 600 10.5px/1 var(--font-display);
  letter-spacing: 0.06em;
  color: var(--ink-2);
  background: transparent;
  border: 0; border-radius: 7px;
  cursor: pointer;
  transition: background .15s ease, color .15s ease, box-shadow .15s ease;
  white-space: nowrap; padding: 0 4px;
}
.segmented button:hover { color: var(--ink); background: rgba(255,255,255,.55); }
.segmented button.active {
  color: #fff; background: linear-gradient(180deg, var(--aqua), var(--aqua-deep));
  box-shadow: 0 3px 10px rgba(13, 141, 153, .35), inset 0 1px 0 rgba(255,255,255,.35);
}

.checks { display: grid; gap: 2px; }
.checks label {
  display: flex; align-items: center; gap: 9px;
  min-height: 26px; padding: 0 6px;
  border-radius: 8px;
  color: var(--ink);
  font-size: 12px;
  cursor: pointer;
  transition: background .12s ease;
}
.checks label:hover { background: rgba(255,255,255,.5); }
.checks input {
  width: 14px; height: 14px;
  accent-color: var(--aqua-deep);
  cursor: pointer;
}
.checks .sub { color: var(--ink-3); font-size: 10.5px; margin-left: auto; font-family: var(--font-mono); }

.slider-row { display: flex; align-items: center; gap: 10px; }
.slider-row output {
  min-width: 58px; text-align: right;
  font: 600 11.5px var(--font-mono);
  color: var(--aqua-deep);
  font-variant-numeric: tabular-nums;
}
input[type="range"] {
  flex: 1; height: 22px; margin: 0;
  -webkit-appearance: none; appearance: none;
  background: transparent; cursor: pointer;
}
input[type="range"]::-webkit-slider-runnable-track {
  height: 5px; border-radius: 3px;
  background: linear-gradient(90deg, var(--aqua) var(--fill, 50%), rgba(126,164,182,.28) var(--fill, 50%));
}
input[type="range"]::-moz-range-track {
  height: 5px; border-radius: 3px; background: rgba(126,164,182,.28);
}
input[type="range"]::-moz-range-progress { height: 5px; border-radius: 3px; background: var(--aqua); }
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 15px; height: 15px; margin-top: -5px;
  border-radius: 50%;
  background: #fff;
  border: 2.5px solid var(--aqua-deep);
  box-shadow: 0 2px 6px rgba(13,141,153,.4);
}
input[type="range"]::-moz-range-thumb {
  width: 11px; height: 11px; border-radius: 50%;
  background: #fff; border: 2.5px solid var(--aqua-deep);
  box-shadow: 0 2px 6px rgba(13,141,153,.4);
}
.hint { margin: 7px 2px 0; font-size: 10.5px; color: var(--ink-3); }

.btn-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.view-btn {
  height: 30px; border-radius: 9px; cursor: pointer;
  font: 600 10.5px/1 var(--font-display); letter-spacing: .05em;
  color: var(--ink-2);
  background: var(--glass-input);
  border: 1px solid var(--stroke);
  transition: all .15s ease;
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
}
.view-btn:hover { color: var(--aqua-deep); border-color: var(--stroke-strong); background: #fff9; }
.view-btn.active {
  color: #fff; background: linear-gradient(180deg, var(--aqua), var(--aqua-deep));
  border-color: transparent;
  box-shadow: 0 3px 10px rgba(13,141,153,.35);
}

details.adv summary {
  list-style: none; cursor: pointer;
  font: 700 9.5px/1 var(--font-display);
  letter-spacing: var(--track-w); text-transform: uppercase;
  color: var(--ink-2);
  display: flex; align-items: center; gap: 8px;
}
details.adv summary::-webkit-details-marker { display: none; }
details.adv summary::before {
  content: "▸"; font-size: 9px; transition: transform .15s ease; color: var(--ink-3);
}
details.adv[open] summary::before { transform: rotate(90deg); }
details.adv summary::after { content: ""; flex: 1; height: 1px; background: var(--stroke); }
details.adv .adv-body { padding-top: 10px; display: grid; gap: 2px; }

.ghost-btn {
  width: 100%; height: 30px; margin-top: 8px; cursor: pointer;
  font: 600 11px var(--font-display); letter-spacing: .06em;
  color: var(--aqua-deep);
  background: var(--aqua-soft);
  border: 1px solid rgba(18,174,190,.35);
  border-radius: 9px;
  transition: all .15s ease;
}
.ghost-btn:hover { background: rgba(18,174,190,.22); border-color: rgba(18,174,190,.6); }

/* ===========================================================================
   RIGHT INSPECTOR
   =========================================================================== */
#inspector {
  position: fixed; z-index: 20;
  top: 88px; right: 16px;
  width: 264px;
  max-height: calc(100vh - 188px);
  display: flex; flex-direction: column;
  border-radius: var(--r-l);
  overflow: hidden;
}
#insp-head {
  display: flex; align-items: center; gap: 8px;
  padding: 11px 14px;
  border-bottom: 1px solid var(--stroke);
  background: var(--glass-soft);
}
#insp-title {
  font: 700 9.5px/1 var(--font-display);
  letter-spacing: var(--track-w); text-transform: uppercase;
  color: var(--ink-2);
}
#insp-context {
  margin-left: auto;
  font: 600 10px var(--font-mono);
  color: var(--aqua-deep);
  max-width: 130px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
#insp-close {
  display: none;
  width: 20px; height: 20px; border: 0; border-radius: 6px;
  background: transparent; color: var(--ink-3); cursor: pointer; font-size: 13px; line-height: 1;
}
#insp-close:hover { color: var(--ink); background: rgba(255,255,255,.6); }
#inspector.has-selection #insp-close { display: block; }
#insp-body { overflow-y: auto; padding: 12px 14px 14px; scrollbar-width: thin; }

.kv { width: 100%; border-collapse: collapse; }
.kv td { padding: 3.5px 0; font-size: 11.5px; color: var(--ink-2); vertical-align: baseline; }
.kv td:last-child {
  text-align: right; color: var(--ink);
  font-family: var(--font-mono); font-size: 11.5px; font-variant-numeric: tabular-nums;
}
.kv tr.rule td { border-top: 1px solid var(--stroke); padding-top: 6px; }
.kv .pos { color: var(--aqua-deep); }
.kv .neg { color: var(--amber); }
.kv .bad { color: var(--red); font-weight: 700; }

.insp-hero {
  display: flex; align-items: baseline; gap: 8px; margin: 2px 0 8px;
}
.insp-hero b {
  font: 700 26px/1 var(--font-display); color: var(--ink);
  font-variant-numeric: tabular-nums;
}
.insp-hero span { font: 600 11px var(--font-display); letter-spacing: .08em; color: var(--ink-2); }

.pill {
  display: inline-flex; align-items: center; gap: 5px;
  font: 700 9px/1 var(--font-display); letter-spacing: .1em; text-transform: uppercase;
  padding: 4px 8px; border-radius: 999px;
}
.pill.ok    { color: var(--ok);    background: rgba(29,157,116,.12); }
.pill.watch { color: var(--amber); background: var(--amber-soft); }
.pill.bad   { color: #fff;         background: var(--red); }
.pill.heavy { color: #8a5408;      background: var(--amber-soft); border: 1px solid rgba(221,138,31,.4); }

.spark-card {
  margin: 10px 0 4px; padding: 8px 9px 6px;
  border: 1px solid var(--stroke); border-radius: 10px;
  background: rgba(255,255,255,.45);
}
.spark-card .spark-cap {
  display: flex; justify-content: space-between;
  font: 600 8.5px/1 var(--font-display); letter-spacing: .12em; text-transform: uppercase;
  color: var(--ink-3); margin-bottom: 5px;
}
.spark-card canvas { display: block; width: 100%; height: 54px; }

.axle-list { display: grid; gap: 4px; margin-top: 8px; }
.axle-row { display: grid; grid-template-columns: 30px 1fr 52px; align-items: center; gap: 8px; }
.axle-row .axn { font: 600 9.5px var(--font-mono); color: var(--ink-3); }
.axle-row .bar { height: 7px; border-radius: 4px; background: rgba(126,164,182,.2); overflow: hidden; }
.axle-row .bar i {
  display: block; height: 100%;
  background: linear-gradient(90deg, var(--amber), #f0b45a);
  border-radius: 4px;
}
.axle-row .axv { font: 600 10px var(--font-mono); color: var(--ink); text-align: right; font-variant-numeric: tabular-nums; }

.insp-actions { display: flex; gap: 6px; margin-top: 12px; }
.insp-actions .view-btn { flex: 1; }

.alert-list { list-style: none; margin: 8px 0 0; padding: 0; display: grid; gap: 5px; }
.alert-list li.none { color: var(--ink-3); font-size: 11px; padding: 2px; }
.alert-list button {
  width: 100%; text-align: left; cursor: pointer;
  display: flex; align-items: center; gap: 8px;
  padding: 7px 9px; border-radius: 9px;
  border: 1px solid rgba(216,74,58,.35);
  background: var(--red-soft);
  color: var(--red);
  font: 600 10.5px var(--font-mono);
  transition: all .12s ease;
}
.alert-list button:hover { background: rgba(216,74,58,.24); }
.alert-list button .r { margin-left: auto; font-weight: 700; }
.sec-cap {
  margin: 14px 0 4px;
  font: 700 8.5px/1 var(--font-display); letter-spacing: .14em; text-transform: uppercase;
  color: var(--ink-3);
  display: flex; align-items: center; gap: 8px;
}
.sec-cap::after { content: ""; flex: 1; height: 1px; background: var(--stroke); }

/* ===========================================================================
   LEGEND CHIP (bottom-left)
   =========================================================================== */
#legend {
  position: fixed; z-index: 20;
  left: 284px; bottom: 84px;
  width: 236px;
  padding: 9px 12px 10px;
  border-radius: var(--r-m);
}
#legend-title {
  font: 700 8.5px/1 var(--font-display);
  letter-spacing: .14em; text-transform: uppercase;
  color: var(--ink-2);
  margin-bottom: 7px;
  display: flex; justify-content: space-between;
}
#legend-title span:last-child { color: var(--ink-3); letter-spacing: .06em; }
#legend-canvas { display: block; width: 100%; height: 30px; }

/* ===========================================================================
   TRANSPORT BAR (bottom center)
   =========================================================================== */
#transport {
  position: fixed; z-index: 25;
  left: 50%; bottom: 16px; transform: translateX(-50%);
  width: min(880px, calc(100vw - 32px));
  display: flex; align-items: center; gap: 12px;
  padding: 10px 14px;
  border-radius: var(--r-l);
}
.play-btn {
  width: 40px; height: 40px; flex: 0 0 auto;
  border-radius: 50%; border: 0; cursor: pointer;
  color: #fff;
  background: linear-gradient(180deg, var(--aqua), var(--aqua-deep));
  box-shadow: 0 6px 16px rgba(13,141,153,.4), inset 0 1px 0 rgba(255,255,255,.4);
  display: inline-flex; align-items: center; justify-content: center;
  transition: transform .12s ease, box-shadow .12s ease;
}
.play-btn:hover { transform: scale(1.05); }
.play-btn svg { width: 15px; height: 15px; }

#speed-group { flex: 0 0 auto; }
#speed-group button { min-width: 34px; }

.timeline { flex: 1; position: relative; height: 34px; min-width: 120px; }
#ticks { position: absolute; inset: 0; pointer-events: none; }
#ticks i {
  position: absolute; bottom: 6px; width: 2px; border-radius: 1px;
}
#ticks i.heavy { height: 8px;  background: var(--amber); opacity: .8; }
#ticks i.alarm { height: 20px; background: var(--red); opacity: .9; }
#time {
  position: absolute; inset: 0; width: 100%;
}
#time::-webkit-slider-runnable-track { height: 6px; }
#time::-webkit-slider-thumb {
  width: 17px; height: 17px; margin-top: -5.5px;
  border-width: 3px;
}

.readout { flex: 0 0 auto; display: flex; flex-direction: column; align-items: flex-end; min-width: 118px; }
#clock {
  font: 700 17px/1.05 var(--font-display);
  letter-spacing: .04em; font-variant-numeric: tabular-nums; color: var(--ink);
}
#clock-date { font: 500 9.5px/1.4 var(--font-mono); color: var(--ink-2); }

/* ===========================================================================
   TOOLTIP (sensors & vehicles)
   =========================================================================== */
#tooltip {
  position: fixed; z-index: 60; pointer-events: none;
  min-width: 200px; max-width: 250px;
  padding: 10px 12px;
  border-radius: var(--r-m);
  background: var(--glass-strong);
  border: 1px solid var(--stroke-strong);
  box-shadow: var(--shadow-2), inset 0 1px 0 var(--stroke-inner);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
}
#tooltip[hidden] { display: none; }
.tt-head {
  display: flex; align-items: center; gap: 10px; margin-bottom: 6px;
  font: 700 11px var(--font-mono); color: var(--aqua-deep);
}
.tt-head .flag { margin-left: auto; color: var(--red); font-family: var(--font-display); font-size: 9px; letter-spacing: .1em; }
#tooltip .kv td { font-size: 11px; padding: 2.5px 0; }
.tt-note { margin-top: 6px; font-size: 9.5px; color: var(--ink-3); }

/* ===========================================================================
   MISC: toast, focus ring host, reduced motion, responsive
   =========================================================================== */
.toast {
  position: fixed; z-index: 80; left: 50%; top: 50%;
  transform: translate(-50%, -50%);
  max-width: min(440px, calc(100vw - 40px));
  padding: 16px 20px;
  border-radius: var(--r-m);
  font: 500 12.5px/1.5 var(--font-body);
  color: var(--ink-2);
  text-align: center;
}
.toast.hidden { display: none; }
.toast.error { color: var(--red); }
.toast .spin {
  display: inline-block; width: 14px; height: 14px; margin-right: 8px;
  border: 2px solid var(--aqua-soft); border-top-color: var(--aqua);
  border-radius: 50%; vertical-align: -2px;
  animation: rot 0.9s linear infinite;
}
@keyframes rot { to { transform: rotate(360deg); } }

#panel, #inspector, #legend, #transport, .kpi, .brand {
  animation: rise .5s cubic-bezier(.2,.7,.2,1) both;
}
@keyframes rise { from { opacity: 0; transform: translateY(10px); } }
#transport { animation-name: rise-c; }
@keyframes rise-c { from { opacity: 0; transform: translate(-50%, 10px); } to { transform: translate(-50%, 0); } }

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

/* medium: hide inspector into toggle, tighten KPI rail */
#insp-fab { display: none; }
@media (max-width: 1240px) {
  #kpi-rail { grid-template-columns: repeat(3, minmax(96px, 1fr)); }
  .kpi-spark { display: none; }
  .kpi { min-height: 46px; }
}
@media (max-width: 1080px) {
  #inspector { display: none; }
  #inspector.open {
    display: flex;
    left: auto; right: 12px; top: 76px;
    width: min(280px, calc(100vw - 24px));
    z-index: 45;
  }
  #insp-fab {
    display: flex; position: fixed; z-index: 40;
    right: 16px; bottom: 84px;
    width: 42px; height: 42px; border-radius: 50%;
    border: 1px solid var(--stroke); cursor: pointer;
    background: var(--glass-strong); color: var(--aqua-deep);
    align-items: center; justify-content: center;
    box-shadow: var(--shadow-1);
    backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur);
  }
}
@media (max-width: 880px) {
  .brand-title { font-size: 14px; }
  .brand-mark { width: 26px; height: 26px; }
  #kpi-rail { display: none; }
  #panel { width: 226px; top: 76px; }
  #legend { width: 190px; bottom: 128px; left: 12px; }
  #transport { flex-wrap: wrap; gap: 8px; padding: 9px 12px; }
  .timeline { order: 5; flex-basis: 100%; height: 26px; }
  .readout { min-width: 0; margin-left: auto; }
}
@media (max-width: 620px) {
  #masthead { padding: 10px 10px 0; }
  #badge-stack .badge-row:first-child { display: none; }
  #panel { max-height: 44vh; }
}