/* ==========================================================================
   Combined Cycle Power Plant Simulator — light-mode "instrument panel" UI
   Warm cream/khaki surfaces with a navy control-room header, in the spirit
   of a vintage industrial control panel. Contrast re-checked against the
   new surface: ink 14.1:1 / 7.25:1 / 3.77:1; status colors keep the
   icon+label mitigation already used throughout (never color alone).
   categorical: blue #2a78d6, aqua #1baf7a, yellow #eda100
   status: good #0ca30c, warn #fab219, serious #ec835a, critical #d03b3b
   ========================================================================== */

:root {
  --page:         #cbb787;
  --plane:        #ece0c0;
  --surface:      #f7f1de;
  --ink:          #2b2013;
  --ink-2:        #5c4d33;
  --ink-3:        #8a7952;
  --hairline:     #ddcda0;
  --baseline:     #c7b482;
  --border:       rgba(43, 32, 19, 0.18);

  --navy:         #17233f;
  --navy-ink:     #eef1f6;

  --blue:         #2a78d6;
  --blue-deep:    #1c5cab;
  --aqua:         #1baf7a;
  --yellow:       #eda100;

  --good:         #0ca30c;
  --good-text:    #005e00;
  --warn:         #fab219;
  --serious:      #ec835a;
  --crit:         #d03b3b;

  --radius:       10px;
  --radius-sm:    6px;
  --sans: system-ui, -apple-system, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--page);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.5;
}

button { font-family: inherit; }

.wrap {
  max-width: 1280px;
  margin: 18px auto 40px;
  padding: 22px 24px 56px;
  background: var(--plane);
  border-radius: 16px;
  border: 1px solid var(--hairline);
  box-shadow: 0 10px 30px rgba(43, 32, 19, 0.18);
}

@media (max-width: 640px) {
  .wrap { margin: 0; border-radius: 0; border-width: 0 0 1px; }
}

/* ---------- Top bar ------------------------------------------------------ */

.topbar {
  background: var(--navy);
  border-bottom: 3px solid #2a3a5c;
  position: sticky;
  top: 0;
  z-index: 20;
}

.topbar-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 10px 20px;
  display: flex;
  align-items: center;
  gap: 22px;
  flex-wrap: wrap;
}

.brand h1 {
  font-size: 17px;
  margin: 0;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--navy-ink);
}

.brand .sub {
  font-size: 12px;
  color: rgba(238, 241, 246, 0.55);
}

.top-stat {
  display: flex;
  flex-direction: column;
  min-width: 88px;
}

.top-stat .k {
  font-size: 11px;
  color: rgba(238, 241, 246, 0.5);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.top-stat .v {
  font-size: 15px;
  font-weight: 600;
  color: var(--navy-ink);
  white-space: nowrap;
}

.time-controls {
  margin-left: auto;
  display: flex;
  gap: 6px;
  align-items: center;
}

.audio-controls {
  display: flex;
  gap: 6px;
  align-items: center;
}

.speed-btn {
  border: 1px solid rgba(238, 241, 246, 0.25);
  background: rgba(238, 241, 246, 0.08);
  color: var(--navy-ink);
  border-radius: var(--radius-sm);
  padding: 5px 12px;
  font-size: 13px;
  cursor: pointer;
}

.speed-btn:hover { background: rgba(238, 241, 246, 0.16); }

.speed-btn[aria-pressed="true"] {
  background: var(--blue);
  border-color: var(--blue);
  color: #fff;
  font-weight: 600;
}

/* ---------- Alarm banner -------------------------------------------------- */

.alarm-banner {
  display: none;
  align-items: center;
  gap: 10px;
  margin: 14px 0 0;
  padding: 9px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
  font-size: 14px;
}

.alarm-banner.show { display: flex; }
.alarm-banner .glyph { font-weight: 700; }
.alarm-banner.sev-warning  { border-left: 4px solid var(--warn); }
.alarm-banner.sev-serious  { border-left: 4px solid var(--serious); }
.alarm-banner.sev-critical { border-left: 4px solid var(--crit); }
.alarm-banner.sev-info     { border-left: 4px solid var(--blue); }

/* ---------- Tabs ---------------------------------------------------------- */

.tabs {
  display: flex;
  gap: 4px;
  margin: 18px 0 16px;
  border-bottom: 1px solid var(--hairline);
  flex-wrap: wrap;
}

.tabs button {
  appearance: none;
  border: none;
  background: none;
  padding: 8px 16px 10px;
  font-size: 14.5px;
  color: var(--ink-2);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}

.tabs button[aria-selected="true"] {
  color: var(--ink);
  font-weight: 600;
  border-bottom-color: var(--blue);
}

.tab-page { display: none; }
.tab-page.active { display: block; }

/* ---------- Panels & layout ---------------------------------------------- */

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
  margin-bottom: 16px;
}

.panel h2 {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-3);
  margin: 0 0 12px;
  font-weight: 600;
}

.panel h3 {
  font-size: 14.5px;
  margin: 16px 0 6px;
}

.operate-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(320px, 1fr);
  gap: 16px;
  align-items: start;
}

@media (max-width: 980px) {
  .operate-grid { grid-template-columns: 1fr; }

  /* Flatten the two columns so panels can be reordered by importance —
     controls land near the top instead of after the whole left column. */
  .col-left, .col-right { display: contents; }
  .panel-schematic { order: 1; }
  .panel-controls  { order: 2; }
  #panel-cutaway   { order: 3; }
  .tiles           { order: 4; }
  .panel-chart     { order: 5; }
  .panel-log       { order: 6; }
  .panel-gt        { order: 7; }
  .panel-hrsg      { order: 8; }
  .panel-st        { order: 9; }
  .panel-dispatch  { order: 10; }
}

/* ---------- Stat tiles ---------------------------------------------------- */

.tiles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 10px;
  margin-bottom: 16px;
}

.tile {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 14px 8px;
}

.tile .label {
  font-size: 12px;
  color: var(--ink-3);
}

.tile .value {
  font-size: 24px;
  font-weight: 600;
  line-height: 1.15;
  color: var(--ink);
}

.tile.hero .value { font-size: 42px; }

.tile .unit {
  font-size: 13px;
  font-weight: 400;
  color: var(--ink-2);
}

.tile .delta { font-size: 12px; color: var(--ink-2); }
.tile .delta.up   { color: var(--good-text); }
.tile .delta.down { color: var(--crit); }

.tile svg.spark { display: block; margin-top: 4px; }

/* ---------- Schematic ------------------------------------------------------ */

.schematic-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.schematic-head-right {
  display: flex;
  align-items: center;
  gap: 14px;
}

.health-ring {
  display: flex;
  align-items: center;
  gap: 10px;
}

.health-ring .ring-text {
  text-align: right;
}

.health-ring .pct {
  font-size: 20px;
  font-weight: 700;
}

.health-ring .desc {
  font-size: 12px;
  color: var(--ink-2);
}

/* status strip + action buttons, grouped directly under the schematic they
   describe/operate rather than in a separate panel */

.schem-status {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px dashed var(--hairline);
}

.schem-controls {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed var(--hairline);
}

@media (max-width: 640px) {
  .schem-controls { grid-template-columns: 1fr; }
}

.schem-col-label {
  font-size: 11.5px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ink-3);
  margin-bottom: 6px;
}

.schem-btn {
  font-size: 12.5px;
  padding: 6px 10px;
}

svg.plant {
  width: 100%;
  height: auto;
  display: block;
}

svg.plant text {
  font-family: var(--sans);
  fill: var(--ink-2);
}

svg.plant .comp-label { font-size: 12.5px; font-weight: 600; fill: var(--ink); }
svg.plant .comp-sub   { font-size: 11px; fill: var(--ink-2); }
svg.plant .flow-label { font-size: 10.5px; fill: var(--ink-3); }

svg.plant .comp {
  stroke-width: 3;
  /* fill is themed per-component inline in the markup — health status here
     only changes the outline, so the illustration reads year-round and the
     status ring is still always visible, never the sole indicator */
}

svg.plant .pipe {
  fill: none;
  stroke: var(--baseline);
  stroke-width: 2.5;
  stroke-linecap: round;
}

svg.plant .pipe.flowing {
  stroke-dasharray: 7 6;
  animation: flowdash 0.9s linear infinite;
}

svg.plant .pipe.steam  { stroke: var(--blue); }
svg.plant .pipe.fuel   { stroke: var(--yellow); }
svg.plant .pipe.water  { stroke: var(--aqua); }
svg.plant .pipe.exhaust{ stroke: var(--serious); }

@keyframes flowdash {
  to { stroke-dashoffset: -13; }
}

@media (prefers-reduced-motion: reduce) {
  svg.plant .pipe.flowing { animation: none; }
}

/* status classes applied to component shapes — the outline (never the sole
   indicator; always paired with the health% label below each component).
   Fill stays each component's own themed art; only .st-wreck overrides it,
   since a wrecked component is a different picture, not just an unhealthy one. */
.st-good     { stroke: var(--good); opacity: 1; }
.st-warning  { stroke: var(--warn); opacity: 1; }
.st-serious  { stroke: var(--serious); opacity: 1; }
.st-critical { stroke: var(--crit); opacity: 1; }
.st-off      { stroke: var(--baseline); opacity: 0.68; }
.st-wreck    { stroke: var(--crit); stroke-dasharray: 3 3; fill: #241c17 !important; opacity: 1; }

/* ---------- Cutaway (particle) panel — deliberately its own dark mode -------- */

.panel-dark {
  background: #11161d;
  border-color: rgba(255, 255, 255, 0.08);
  color: #d7dbe0;
}

.cutaway-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

.panel-dark h2 {
  color: #9aa4b0;
  margin: 0;
}

.cutaway-toggle {
  font-size: 13px;
  color: #c3c2b7;
  padding: 0;
}

.cutaway-canvas-wrap {
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

#cutaway-canvas {
  width: 100%;
  height: auto;
  aspect-ratio: 200 / 60;
  display: block;
  image-rendering: pixelated;
  background: #0d1117;
}

.cutaway-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 10px;
  font-size: 12px;
  color: #aab0b8;
}

.cutaway-legend .lg {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 2px;
  margin-right: 5px;
  vertical-align: -1px;
}

.cutaway-caption {
  margin: 10px 0 0;
  font-size: 12.5px;
  color: #8a9099;
}

/* ---------- Controls ------------------------------------------------------- */

fieldset {
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
  margin: 0 0 12px;
  padding: 10px 12px 12px;
}

legend {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--ink-2);
  padding: 0 6px;
}

.choice {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 4px 0;
  font-size: 14px;
}

.choice input { margin-top: 3px; accent-color: var(--blue); }

.choice .hint {
  display: block;
  font-size: 12px;
  color: var(--ink-3);
}

.choice.disabled { color: var(--ink-3); }

.stepper {
  display: inline-flex;
  align-items: center;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.stepper button {
  border: none;
  background: var(--plane);
  color: var(--ink);
  width: 34px;
  height: 32px;
  font-size: 17px;
  cursor: pointer;
}

.stepper button:disabled { color: var(--baseline); cursor: default; }

.stepper .val {
  min-width: 86px;
  text-align: center;
  font-weight: 600;
  font-size: 15px;
  padding: 0 8px;
}

.ctl-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 5px 0;
  font-size: 14px;
  flex-wrap: wrap;
}

.ctl-row .k { color: var(--ink-2); }

.readout {
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}

.btn {
  appearance: none;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--ink);
  border-radius: var(--radius-sm);
  padding: 7px 14px;
  font-size: 13.5px;
  cursor: pointer;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.5) inset, 0 1px 2px rgba(43, 32, 19, 0.08);
}

.btn:hover:not(:disabled) { background: var(--plane); }
.btn:active:not(:disabled) { box-shadow: 0 1px 2px rgba(43, 32, 19, 0.12) inset; transform: translateY(1px); }
.btn:disabled { color: var(--baseline); cursor: default; box-shadow: none; }

.btn.primary {
  background: var(--blue);
  border-color: var(--blue-deep);
  color: #fff;
  font-weight: 600;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.25) inset, 0 1px 2px rgba(43, 32, 19, 0.18);
}

.btn.primary:hover:not(:disabled) { background: var(--blue-deep); }
.btn.primary:disabled { background: var(--baseline); border-color: var(--baseline); color: #fff; }

.btn.danger {
  color: var(--crit);
  border-color: rgba(208, 59, 59, 0.4);
}

.btn-row { display: flex; gap: 8px; flex-wrap: wrap; margin: 8px 0; }

.seq-msg {
  font-size: 13px;
  color: var(--ink-2);
  background: var(--plane);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  margin-top: 8px;
  display: none;
}

.seq-msg.show { display: block; }
.seq-msg .why { color: var(--blue-deep); cursor: pointer; text-decoration: underline; }

.state-line {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 14px;
  padding: 3px 0;
}

.state-line .unit-name { width: 116px; color: var(--ink-2); flex: none; }
.state-line .st { font-weight: 600; }

.progressbar {
  height: 6px;
  border-radius: 3px;
  background: var(--hairline);
  overflow: hidden;
  margin: 4px 0 8px;
}

.progressbar .fill {
  height: 100%;
  background: var(--blue);
  border-radius: 3px;
  transition: width 0.3s linear;
}

/* ---------- Synchroscope --------------------------------------------------- */

.syncscope {
  display: none;
  align-items: center;
  gap: 16px;
  padding: 10px 0 4px;
}

.syncscope.show { display: flex; }

.syncscope .scope-readout { font-size: 13.5px; }
.syncscope .scope-readout div { padding: 1px 0; }
.syncscope .ok-window { color: var(--good-text); font-weight: 600; }

/* ---------- Meters (health) ------------------------------------------------ */

.meter-row {
  display: grid;
  grid-template-columns: 170px 1fr 120px;
  align-items: center;
  gap: 12px;
  padding: 6px 0;
  font-size: 14px;
}

.meter-row .name { color: var(--ink-2); }

.meter {
  height: 10px;
  border-radius: 5px;
  overflow: hidden;
}

.meter .fill {
  height: 100%;
  border-radius: 5px;
  transition: width 0.4s ease;
}

/* fill severity + track = lighter step of the same hue */
.meter.m-good     { background: rgba(12, 163, 12, 0.16); }
.meter.m-good .fill { background: var(--good); }
.meter.m-warning  { background: rgba(250, 178, 25, 0.2); }
.meter.m-warning .fill { background: var(--warn); }
.meter.m-serious  { background: rgba(236, 131, 90, 0.2); }
.meter.m-serious .fill { background: var(--serious); }
.meter.m-critical { background: rgba(208, 59, 59, 0.16); }
.meter.m-critical .fill { background: var(--crit); }

.meter-row .stat {
  font-size: 13px;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

.meter-row .stat .glyph { font-weight: 700; margin-right: 4px; }

.g-good     { color: var(--good-text); }
.g-warning  { color: #8a6100; }
.g-serious  { color: #b4472a; }
.g-critical { color: var(--crit); }

/* ---------- Maintenance / market tables ------------------------------------ */

.task {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4px 14px;
  padding: 10px 0;
  border-bottom: 1px solid var(--hairline);
  font-size: 14px;
}

.task-wreck {
  background: rgba(208, 59, 59, 0.05);
  border-left: 3px solid var(--crit);
  padding-left: 10px;
  margin-left: -13px;
}
.task-wreck .t-name { color: var(--crit); }

.task:last-child { border-bottom: none; }
.task .t-name { font-weight: 600; }
.task .t-desc { color: var(--ink-2); font-size: 13px; grid-column: 1; }
.task .t-meta { color: var(--ink-3); font-size: 12.5px; grid-column: 1; }
.task .btn { align-self: center; grid-row: 1 / span 3; grid-column: 2; }

.consumable-row {
  display: grid;
  grid-template-columns: 150px 1fr auto auto;
  gap: 12px;
  align-items: center;
  padding: 7px 0;
  font-size: 14px;
}

.consumable-row .cname { color: var(--ink-2); }

table.datatable {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
}

table.datatable th {
  text-align: left;
  color: var(--ink-3);
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  border-bottom: 1px solid var(--hairline);
  padding: 6px 10px 6px 0;
}

table.datatable td {
  padding: 6px 10px 6px 0;
  border-bottom: 1px solid var(--hairline);
  vertical-align: top;
}

table.datatable td.num { font-variant-numeric: tabular-nums; }

/* ---------- Trend chart ----------------------------------------------------- */

.chart-wrap { position: relative; }

svg.trend { width: 100%; height: auto; display: block; }

svg.trend text {
  font-family: var(--sans);
  font-size: 11px;
  fill: var(--ink-3);
}

svg.trend .gridline { stroke: var(--hairline); stroke-width: 1; }
svg.trend .axisline { stroke: var(--baseline); stroke-width: 1; }
svg.trend .series   { fill: none; stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }
svg.trend .end-label { font-size: 11.5px; font-weight: 600; fill: var(--ink-2); }
svg.trend .crosshair { stroke: var(--baseline); stroke-width: 1; }

.legend {
  display: flex;
  gap: 18px;
  font-size: 13px;
  color: var(--ink-2);
  margin-bottom: 6px;
  flex-wrap: wrap;
}

.legend .key {
  display: inline-block;
  width: 14px;
  height: 3px;
  border-radius: 2px;
  vertical-align: middle;
  margin-right: 6px;
}

.chart-tip {
  position: absolute;
  pointer-events: none;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: 0 2px 10px rgba(11, 11, 11, 0.08);
  padding: 6px 10px;
  font-size: 12.5px;
  display: none;
  white-space: nowrap;
  z-index: 5;
}

.chart-tip .tip-row { display: flex; align-items: center; gap: 6px; }
.chart-tip .tip-t { color: var(--ink-3); }

/* ---------- Alarm / event log ----------------------------------------------- */

.log {
  max-height: 260px;
  overflow-y: auto;
  font-size: 13px;
}

.log-entry {
  display: flex;
  gap: 10px;
  padding: 4px 0;
  border-bottom: 1px solid var(--hairline);
  align-items: baseline;
}

.log-entry .t { color: var(--ink-3); font-variant-numeric: tabular-nums; flex: none; width: 96px; }
.log-entry .glyph { font-weight: 700; flex: none; width: 16px; text-align: center; }
.log-entry .m { color: var(--ink-2); }
.log-entry .why { color: var(--blue-deep); cursor: pointer; text-decoration: underline; font-size: 12px; }

/* ---------- Learn tab -------------------------------------------------------- */

.learn {
  max-width: 820px;
}

.learn details {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  margin-bottom: 10px;
  padding: 0 18px;
}

.learn summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 15.5px;
  padding: 13px 0;
  list-style-position: inside;
}

.learn details > div { padding: 2px 0 16px; color: var(--ink-2); }
.learn details p { margin: 8px 0; }
.learn details strong { color: var(--ink); }

.formula {
  background: var(--plane);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  margin: 10px 0;
  font-size: 15px;
  color: var(--ink);
  overflow-x: auto;
}

.formula .fx {
  font-family: Georgia, "Times New Roman", serif;
  font-style: italic;
  font-size: 16px;
}

.formula .note {
  display: block;
  font-family: var(--sans);
  font-style: normal;
  font-size: 12.5px;
  color: var(--ink-3);
  margin-top: 6px;
}

.states-table td:first-child { font-weight: 600; color: var(--ink); white-space: nowrap; }

.callout {
  border-left: 3px solid var(--blue);
  background: var(--plane);
  padding: 10px 14px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 10px 0;
  font-size: 13.5px;
  color: var(--ink-2);
}

/* ---------- Tutorial checklist ------------------------------------------------ */

.checklist { margin: 0; padding: 0; list-style: none; }

.checklist li {
  padding: 4px 0 4px 26px;
  position: relative;
  font-size: 13.5px;
  color: var(--ink-2);
}

.checklist li::before {
  content: "○";
  position: absolute;
  left: 4px;
  color: var(--ink-3);
}

.checklist li.done { color: var(--ink-3); text-decoration: line-through; }
.checklist li.done::before { content: "✓"; color: var(--good-text); font-weight: 700; text-decoration: none; }

/* ---------- Boot splash -------------------------------------------------------
   A brief, non-interactive box-art flash shown before the title splash — the
   "publisher logo before the menu" beat. Auto-dismisses on a timer (JS), with
   a pure-CSS fallback animation so it can never get stuck if JS is slow, plus
   click/tap/keypress to skip. ------------------------------------------------ */

#boot-splash {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 28px;
  background: #11161d;
  cursor: pointer;
  animation: bootAutoHide 3.4s forwards;
}

#boot-splash.hide {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.4s ease, visibility 0.4s;
}

@keyframes bootAutoHide {
  0%, 92%   { opacity: 1; visibility: visible; }
  100%      { opacity: 0; visibility: hidden; pointer-events: none; }
}

.boot-art {
  max-width: min(360px, 78vw);
  max-height: 62vh;
  width: auto;
  border-radius: 12px;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.06), 0 20px 60px rgba(0, 0, 0, 0.55);
  animation: bootArtIn 0.5s ease-out;
}

@keyframes bootArtIn {
  from { opacity: 0; transform: scale(0.94); }
  to   { opacity: 1; transform: scale(1); }
}

.boot-bar {
  width: 240px;
  height: 8px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.12);
  overflow: hidden;
}

.boot-bar-fill {
  height: 100%;
  width: 0%;
  border-radius: 4px;
  background: linear-gradient(90deg, #2a78d6, #1baf7a, #eda100);
  animation: bootFill 2.6s ease-in-out forwards;
}

@keyframes bootFill { to { width: 100%; } }

.boot-label {
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.75);
}

.boot-skip {
  font-size: 11.5px;
  color: rgba(255, 255, 255, 0.35);
  letter-spacing: 0.03em;
}

@media (prefers-reduced-motion: reduce) {
  /* keep the auto-hide timer (a plain fade, not motion) so the screen can
     never get stuck even if JS is slow — just drop the scale-in and the
     animated fill sweep. */
  .boot-art { animation: none; }
  .boot-bar-fill { animation: none; width: 100%; }
}

/* ---------- Title splash ----------------------------------------------------
   Deliberately its own visual language: a bright, illustrated "software box"
   title screen — not the dashboard's minimal chrome, and not a login. No
   fields, no accounts; one click starts or resumes the sim. ------------------ */

#splash {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 26px;
  background: var(--navy);
  transition: opacity 0.35s ease, visibility 0.35s;
}

#splash.dismissed {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.splash-frame {
  position: relative;
  width: min(800px, 100%);
  max-height: 96vh;
  overflow: hidden auto;
  border-radius: 18px;
  background: var(--surface);
  border: 6px solid var(--navy);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
  padding-bottom: 22px;
}

.splash-scene { line-height: 0; }
svg.splash-art { width: 100%; height: 170px; display: block; }

@keyframes steamRise {
  0%   { transform: translateY(0) scale(1);   opacity: 0.8; }
  100% { transform: translateY(-16px) scale(1.35); opacity: 0; }
}
.splash-steam ellipse { animation: steamRise 3.2s ease-in infinite; transform-origin: center; }
.splash-steam ellipse:nth-child(2) { animation-delay: 0.9s; }
.splash-steam ellipse:nth-child(3) { animation-delay: 1.8s; }
@media (prefers-reduced-motion: reduce) {
  .splash-steam ellipse { animation: none; }
}

.splash-plaque {
  text-align: center;
  margin-top: -14px;
  padding: 0 24px;
}

.splash-title {
  display: inline-flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 4px;
  font-size: clamp(28px, 5.4vw, 44px);
  font-weight: 800;
  letter-spacing: 0.01em;
  line-height: 1.05;
}

.st-block {
  padding: 6px 14px;
  border-radius: 6px;
  color: #fff;
  box-shadow: 0 3px 0 rgba(0, 0, 0, 0.18);
}

.st-red  { background: #d03b3b; }
.st-blue { background: #2a78d6; }

.splash-subtitle {
  margin-top: 12px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-2);
}

.splash-tag {
  max-width: 520px;
  margin: 16px auto 0;
  padding: 0 24px;
  text-align: center;
  font-size: 14.5px;
  line-height: 1.55;
  color: var(--ink-2);
}

.splash-actions {
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  margin: 20px 24px 0;
}

.splash-btn {
  padding: 10px 20px;
  font-size: 14.5px;
  border-radius: 8px;
}

.splash-meta {
  text-align: center;
  font-size: 12.5px;
  color: var(--ink-3);
  margin-top: 10px;
  min-height: 16px;
}

.splash-badge {
  margin: 18px auto 0;
  width: fit-content;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--plane);
  color: var(--ink-2);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.03em;
}

@media (max-width: 520px) {
  .splash-frame { border-width: 4px; border-radius: 12px; }
  svg.splash-art { height: 130px; }
}

/* ---------- Footer ------------------------------------------------------------ */

.foot {
  margin-top: 26px;
  font-size: 12.5px;
  color: var(--ink-3);
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
}