/* Cat-Car field station — dusk moss palette, instrument-panel discipline.
   Palette: bg #141813 · panel #1C231B · line #3A443A · ink #E8EDDF
   dim #93A08D · amber #E8A33D (birdsong/live) · red #E2554A (safety)
   green #7FB069 (engage/ok) */

* { box-sizing: border-box; }
:root {
  --bg: #141813; --panel: #1C231B; --panel2: #222B21; --line: #3A443A;
  --ink: #E8EDDF; --dim: #93A08D; --amber: #E8A33D; --red: #E2554A;
  --green: #7FB069; --shadow: 0 4px 24px rgba(0,0,0,.45);
  --r: 10px;
  font-size: 15px;
}
html, body { margin: 0; height: 100%; }
body {
  background: var(--bg); color: var(--ink);
  font-family: 'Sora', system-ui, -apple-system, sans-serif;
  display: flex; flex-direction: column; min-height: 100vh;
}
.mono { font-family: 'IBM Plex Mono', ui-monospace, Menlo, monospace; }
.dim { color: var(--dim); }
button { font: inherit; cursor: pointer; }
:focus-visible { outline: 2px solid var(--amber); outline-offset: 2px; }

/* ---------- top bar ---------- */
.topbar {
  display: flex; align-items: center; gap: 1.25rem;
  padding: .6rem 1rem; border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, #1A201A, var(--bg));
}
.brand { font-weight: 700; letter-spacing: .12em; }
.brand-mark { color: var(--amber); }
.brand-sub { font-weight: 400; color: var(--dim); letter-spacing: .04em; font-size: .8em; }
.badges { display: flex; gap: .5rem; }
.badge {
  font-family: 'IBM Plex Mono', monospace; font-size: .72rem; letter-spacing: .08em;
  padding: .2rem .55rem .2rem 1.15rem; border: 1px solid var(--line); border-radius: 999px;
  position: relative; color: var(--dim);
}
.badge::before {
  content: ''; position: absolute; left: .45rem; top: 50%; transform: translateY(-50%);
  width: .42rem; height: .42rem; border-radius: 50%; background: #555;
}
.badge[data-state="on"] { color: var(--ink); }
.badge[data-state="on"]::before { background: var(--green); box-shadow: 0 0 6px var(--green); }
.badge[data-state="warn"]::before { background: var(--amber); }
.tele { margin-left: auto; font-size: .72rem; color: var(--dim); }

/* ---------- layout ---------- */
.layout {
  display: grid; grid-template-columns: minmax(0, 1fr) 340px;
  gap: 1rem; padding: 1rem; flex: 1; align-items: start;
}
@media (max-width: 980px) { .layout { grid-template-columns: 1fr; } }

/* ---------- stage ---------- */
.stage {
  position: relative; background: #0C0F0C; border: 1px solid var(--line);
  border-radius: var(--r); overflow: hidden; box-shadow: var(--shadow);
  aspect-ratio: 4 / 3; display: flex; align-items: center; justify-content: center;
}
.stage-rotor { position: absolute; inset: 0; }
.stage-rotor.rot180 { transform: rotate(180deg); }
.stage-rotor canvas {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain;
}
.stage-empty { text-align: center; position: relative; z-index: 1; padding: 1rem; }
.stage-empty p { margin: .3rem 0; }
.zone-readout {
  position: absolute; left: .7rem; bottom: .55rem; z-index: 2;
  font-size: .72rem; letter-spacing: .06em; color: var(--dim);
  background: rgba(12,15,12,.72); padding: .25rem .5rem; border-radius: 6px;
  border: 1px solid var(--line);
}
.zone-readout[data-zone="engage"] { color: var(--green); border-color: var(--green); }
.zone-readout[data-zone="buffer"] { color: var(--red); border-color: var(--red); }

/* ---------- signature: invitation trail ---------- */
.trail {
  display: flex; align-items: center; gap: .35rem; flex-wrap: wrap;
  margin-top: .8rem; padding: .55rem .7rem;
  border: 1px solid var(--line); border-radius: var(--r); background: var(--panel);
}
.trail-node {
  font-family: 'IBM Plex Mono', monospace; font-size: .7rem; letter-spacing: .1em;
  text-transform: uppercase; color: var(--dim);
  padding: .3rem .6rem; border-radius: 999px; border: 1px dashed transparent;
  position: relative;
}
.trail-node + .trail-node::before {
  content: '·· '; color: var(--line); margin-right: .1rem; letter-spacing: 0;
}
.trail-node.active {
  color: #141813; background: var(--amber); border-color: var(--amber);
  animation: trailpulse 1.6s ease-in-out infinite;
}
.trail-node.done { color: var(--ink); border-color: var(--line); }
@keyframes trailpulse { 50% { box-shadow: 0 0 12px rgba(232,163,61,.55); } }
@media (prefers-reduced-motion: reduce) { .trail-node.active { animation: none; } }
.trail-safety {
  flex-basis: 100%; margin-top: .35rem; color: var(--red); font-size: .78rem;
  letter-spacing: .08em; border-top: 1px dashed var(--red); padding-top: .4rem;
}

/* ---------- log ---------- */
.logpane { margin-top: .8rem; border: 1px solid var(--line); border-radius: var(--r); background: var(--panel); }
.logpane-head { font-size: .68rem; letter-spacing: .12em; text-transform: uppercase;
  color: var(--dim); padding: .4rem .7rem; border-bottom: 1px solid var(--line); }
.logtail { height: 110px; overflow-y: auto; padding: .45rem .7rem; font-size: .72rem;
  line-height: 1.5; color: var(--dim); white-space: pre-wrap; }
.logtail .t-err { color: var(--red); }

/* ---------- side panels ---------- */
.side { display: flex; flex-direction: column; gap: .7rem; }
.panel {
  border: 1px solid var(--line); border-radius: var(--r); background: var(--panel);
  overflow: hidden;
}
.panel > summary {
  cursor: pointer; list-style: none; padding: .6rem .85rem;
  font-weight: 600; font-size: .82rem; letter-spacing: .06em;
  background: linear-gradient(180deg, var(--panel2), var(--panel));
  user-select: none;
}
.panel > summary::-webkit-details-marker { display: none; }
.panel > summary::after { content: '▾'; float: right; color: var(--dim); transition: transform .15s; }
.panel:not([open]) > summary::after { transform: rotate(-90deg); }
.panel-body { padding: .75rem .85rem .9rem; display: flex; flex-direction: column; gap: .65rem; }
.panel-dev { border-style: dashed; }

.row { display: flex; gap: .5rem; align-items: center; flex-wrap: wrap; }
.field { display: flex; flex-direction: column; gap: .3rem; font-size: .78rem; color: var(--dim); }
.field input {
  background: #10140F; color: var(--ink); border: 1px solid var(--line);
  border-radius: 7px; padding: .45rem .55rem; font-size: .8rem; min-width: 0; flex: 1;
}
.hint { margin: 0; font-size: .72rem; line-height: 1.45; color: var(--dim); }
.check { display: flex; gap: .45rem; align-items: center; font-size: .78rem; color: var(--dim); }
.check input { accent-color: var(--amber); }

.btn {
  border: 1px solid var(--line); background: var(--panel2); color: var(--ink);
  border-radius: 8px; padding: .45rem .8rem; font-size: .8rem; font-weight: 600;
}
.btn:hover { border-color: var(--dim); }
.btn-primary { background: var(--amber); border-color: var(--amber); color: #141813; }
.btn-primary:hover { filter: brightness(1.08); }
.btn-danger { background: transparent; border-color: var(--red); color: var(--red); }
.btn-danger:hover { background: rgba(226,85,74,.12); }
.btn-ghost { background: transparent; }
.btn:disabled { opacity: .45; cursor: not-allowed; }

.sliders { display: flex; flex-direction: column; gap: .55rem; }
.slider { display: block; font-size: .74rem; color: var(--dim); line-height: 1.6; }
.slider output { color: var(--ink); font-family: 'IBM Plex Mono', monospace; }
.slider input[type=range] { width: 100%; accent-color: var(--amber); }

/* drive pad + gimbal stick */
.drive-wrap { display: flex; gap: 1rem; align-items: center; justify-content: space-between; }
.pad {
  display: grid; gap: .35rem;
  grid-template-areas: ". u ." "l c r" ". d ."; grid-auto-columns: 52px; grid-auto-rows: 44px;
}
.pad-btn {
  border: 1px solid var(--line); border-radius: 9px; background: var(--panel2);
  color: var(--ink); font-size: 1rem;
}
.pad-btn:active { background: var(--amber); color: #141813; }
.pad-stop { border-color: var(--red); color: var(--red); }
.pad-btn:disabled { opacity: .4; }
.stick-wrap { display: flex; flex-direction: column; gap: .5rem; align-items: center; }
.stick {
  width: 110px; height: 110px; border-radius: 50%; border: 1px solid var(--line);
  background: radial-gradient(circle at 50% 45%, var(--panel2), #10140F);
  position: relative; touch-action: none;
}
.stick-knob {
  position: absolute; width: 34px; height: 34px; border-radius: 50%;
  background: var(--amber); left: 50%; top: 50%; transform: translate(-50%,-50%);
  box-shadow: 0 2px 8px rgba(0,0,0,.5);
}

/* game hud + segmented style buttons */
.game-hud { display: flex; gap: 1rem; font-size: .85rem; }
#game-score { color: var(--amber); }
.seg { gap: 0; }
.seg-btn { border-radius: 0; flex: 1; }
.seg-btn:first-child { border-radius: 8px 0 0 8px; }
.seg-btn:last-child { border-radius: 0 8px 8px 0; }
.seg-btn.active { background: var(--amber); color: #141813; border-color: var(--amber); }
.det-status { font-size: .72rem; color: var(--dim); }

/* toasts */
.toasts { position: fixed; right: 1rem; bottom: 1rem; display: flex; flex-direction: column; gap: .5rem; z-index: 50; }
.toast {
  background: var(--panel2); border: 1px solid var(--line); border-left: 3px solid var(--amber);
  color: var(--ink); padding: .55rem .8rem; border-radius: 8px; font-size: .78rem;
  box-shadow: var(--shadow); max-width: 320px; animation: toastin .18s ease-out;
}
.toast.err { border-left-color: var(--red); }
@keyframes toastin { from { opacity: 0; transform: translateY(6px); } }
@media (prefers-reduced-motion: reduce) { .toast { animation: none; } }