/* Design system adapted from SenSen CityEye (ahd-demo): IBM Plex Mono terminal
   aesthetic, light theme, amber/orange accent. Fonts self-hosted (OFL) under /fonts. */
@font-face { font-family: 'IBM Plex Mono'; font-style: normal; font-weight: 400; font-display: swap; src: url('/fonts/ibm-plex-mono-latin-400-normal.woff2') format('woff2'); }
@font-face { font-family: 'IBM Plex Mono'; font-style: normal; font-weight: 500; font-display: swap; src: url('/fonts/ibm-plex-mono-latin-500-normal.woff2') format('woff2'); }
@font-face { font-family: 'IBM Plex Mono'; font-style: normal; font-weight: 600; font-display: swap; src: url('/fonts/ibm-plex-mono-latin-600-normal.woff2') format('woff2'); }
@font-face { font-family: 'IBM Plex Mono'; font-style: normal; font-weight: 700; font-display: swap; src: url('/fonts/ibm-plex-mono-latin-700-normal.woff2') format('woff2'); }
@font-face { font-family: 'Inter'; font-style: normal; font-weight: 400; font-display: swap; src: url('/fonts/inter-latin-400-normal.woff2') format('woff2'); }
@font-face { font-family: 'Inter'; font-style: normal; font-weight: 500; font-display: swap; src: url('/fonts/inter-latin-500-normal.woff2') format('woff2'); }
@font-face { font-family: 'Inter'; font-style: normal; font-weight: 600; font-display: swap; src: url('/fonts/inter-latin-600-normal.woff2') format('woff2'); }
@font-face { font-family: 'Inter'; font-style: normal; font-weight: 700; font-display: swap; src: url('/fonts/inter-latin-700-normal.woff2') format('woff2'); }
:root {
  --bg: #F5F5F5;
  --bg-card: #FFFFFF;
  --bg-secondary: #F0F0F0;
  --bg-accent: #E8E8EC;
  --panel: #FFFFFF;            /* legacy alias */
  --line: #E0E0E0;            /* legacy alias */
  --border: #E0E0E0;
  --border-light: #D0D0D0;
  --text: #1A1A1A;
  --fg: #1A1A1A;
  --fg-secondary: #404040;
  --muted: #9CA3AF;
  --accent: #D97706;          /* legacy alias */
  --primary: #D97706;
  --primary-dim: #FEF3C7;
  --primary-fg: #FFFFFF;
  --green: #16A34A;
  --green-dim: #BBF7D0;
  --red: #DC2626;
  --red-dim: #FECACA;
  --cyan: #2563EB;
  --radius: 6px;
  --radius-lg: 10px;
  --font-mono: 'IBM Plex Mono', 'Menlo', 'Consolas', ui-monospace, monospace;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font: 14px/1.55 var(--font-mono);
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}

header {
  padding: 26px 28px 14px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-card);
}
header h1 { margin: 0 0 6px; font-size: 20px; font-weight: 700; letter-spacing: -.2px; }
.sub { margin: 0; color: var(--text); max-width: 760px; font-size: 14px; font-weight: 500; line-height: 1.6; }
.sub::before { content: "// "; color: var(--primary); font-weight: 600; }
em { font-style: normal; color: var(--primary); font-weight: 500; }
a { color: var(--primary); }

/* Home header: title + description on the left, a CTA button on the right */
.home-header { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.home-header .head-main { flex: 1 1 460px; min-width: 0; }
.cta {
  display: flex; flex-direction: column; gap: 3px; max-width: 340px;
  text-decoration: none; background: var(--bg-card); border: 1px solid var(--primary);
  border-radius: var(--radius); padding: 11px 16px; transition: background .15s;
}
.cta:hover { background: var(--primary-dim); }
.cta .cta-t { color: var(--primary); font-weight: 700; font-size: 13px; }
.cta .cta-s { color: var(--muted); font-size: 11px; line-height: 1.45; }

main {
  display: grid;
  grid-template-columns: 400px 1fr;
  gap: 24px;
  padding: 24px 28px;
  align-items: start;
}
nav { display: flex; flex-direction: column; gap: 8px; }
.scene-btn {
  text-align: left;
  background: var(--bg-card);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 12px 14px;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 13px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: border-color .15s, background .15s, box-shadow .15s;
}
.scene-btn:hover { border-color: var(--primary); }
.scene-btn.active {
  border-color: var(--primary);
  background: var(--primary-dim);
  box-shadow: inset 3px 0 0 var(--primary);
}
.scene-btn.disabled { opacity: .55; cursor: not-allowed; }
.scene-btn .t { font-weight: 600; }
.badge {
  font-size: 10px;
  letter-spacing: .5px;
  text-transform: uppercase;
  color: var(--primary);
  background: var(--primary-dim);
  border: 1px solid var(--primary);
  border-radius: var(--radius);
  padding: 1px 6px;
  width: fit-content;
}

.stage-wrap { max-width: 560px; }
.stage {
  position: relative;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-secondary);
}
canvas { display: block; width: 100%; height: auto; image-rendering: auto; }
.status {
  position: absolute;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(245, 245, 245, .82);
  color: var(--fg-secondary);
  font-size: 13px;
  text-align: center;
  padding: 16px;
}
.controls {
  margin-top: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px;
}
.controls label {
  display: block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 10px;
}
#opacity-val, #fx-opacity-val, #ra-opacity-val { color: var(--primary); font-variant-numeric: tabular-nums; }
input[type="range"] { width: 100%; accent-color: var(--primary); }
.legend {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 16px;
  color: var(--muted);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}
.legend-bar {
  flex: 1;
  height: 12px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: linear-gradient(90deg,
    #0000ff 0%, #00ffff 25%, #00ff00 50%, #ffff00 75%, #ff0000 100%);
}
.legend-caption { color: var(--muted); font-size: 11px; margin: 6px 0 0; }
.desc {
  margin-top: 16px;
  color: var(--fg-secondary);
  max-width: 560px;
  font-size: 13px;
  line-height: 1.6;
}
canvas#canvas { cursor: crosshair; }
.focus-dot {
  position: absolute;
  display: none;
  width: 14px; height: 14px;
  margin: -7px 0 0 -7px;
  border: 2px solid var(--primary);
  border-radius: 50%;
  box-shadow: 0 0 0 2px rgba(255,255,255,.7);
  pointer-events: none;
}

/* Explain panel */
.explain {
  padding: 8px 28px 40px;
  border-top: 1px solid var(--border);
  margin-top: 8px;
}
.explain h2 {
  font-size: 13px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--muted);
  margin: 20px 0 6px;
}
.explain .muted { color: var(--muted); font-weight: 400; }
.muted { color: var(--muted); }
.mono { font-family: var(--font-mono); }
.explain-grid {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 20px;
  margin: 12px 0 20px;
  max-width: 900px;
}
.panel {
  margin: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 14px;
}
.panel figcaption { font-size: 13px; margin-bottom: 10px; line-height: 1.4; }
#array-canvas { width: 100%; height: auto; background: var(--bg-secondary); border-radius: var(--radius); }
#raw-img {
  width: 100%; height: auto; border-radius: var(--radius); display: block;
  image-rendering: pixelated; background: var(--bg-secondary);
}
.raw-axis { display: flex; justify-content: space-between; color: var(--muted); font-size: 11px; margin-top: 6px; }
.steer { max-width: 900px; }
.steer-readout {
  display: flex; gap: 28px; flex-wrap: wrap;
  margin: 12px 0 14px; font-size: 13px; color: var(--muted);
}
.steer-readout .power { font-size: 14px; }
.mono.big { font-size: 18px; font-weight: 700; color: var(--primary); }
.steer-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.steer-grid figcaption, .sum-fig figcaption { font-size: 12.5px; color: var(--text); margin-bottom: 8px; }
.steer-grid canvas, .sum-canvas, #sum-canvas {
  width: 100%; height: auto; background: var(--bg-secondary);
  border: 1px solid var(--border); border-radius: var(--radius);
}
.sum-fig { margin: 16px 0 0; }

/* ---- Fusion scene ---- */
.fusion { margin: 8px auto 40px; max-width: 1500px; padding: 0 22px; }
.fusion-controls { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; margin: 6px 0 16px; }
.fusion-controls label { margin-bottom: 0; }
.fusion-controls .hint { color: var(--muted); font-size: 12px; }
.fusion-views { display: grid; grid-template-columns: repeat(auto-fit, minmax(360px, 1fr)); gap: 18px; }
.fx-fig { margin: 0; }
.fx-fig figcaption { font-size: 13px; color: var(--text); margin-bottom: 8px; }
.fx-fig canvas {
  width: 100%; height: auto; background: var(--bg-secondary); border: 1px solid var(--border);
  border-radius: var(--radius); cursor: crosshair; display: block;
}
.fx-axwrap { position: relative; }
.fx-inset {
  position: absolute; right: 8px; bottom: 8px; width: 38%; max-width: 180px;
  border: 2px solid var(--primary); border-radius: var(--radius); box-shadow: 0 2px 10px rgba(0,0,0,.25);
}
.fx-readout { margin-top: 18px; }
.fx-meta { color: var(--muted); font-size: 12px; margin-bottom: 8px; }
.fx-table { border-collapse: collapse; width: 100%; max-width: 980px; font-size: 13px; }
.fx-table th, .fx-table td { text-align: left; padding: 6px 12px; border-bottom: 1px solid var(--border); }
.fx-table th { color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: .5px; font-size: 11px; }
.fx-table tr.amb td { color: var(--red); }
.fx-live {
  margin-top: 14px; padding: 10px 14px; background: var(--bg-secondary); border: 1px solid var(--border);
  border-radius: var(--radius); font-size: 13px; color: var(--text); font-variant-numeric: tabular-nums;
}

/* ---- Real ANPR scene ---- */
.ra-wrap { display: grid; grid-template-columns: minmax(420px, 768px) 1fr; gap: 22px; align-items: start; }
.ra-fig { margin: 0; }
.ra-fig canvas { max-width: 768px; }
.ra-plate {
  font-size: 26px; font-weight: 700; letter-spacing: 2px; color: var(--fg);
  background: var(--bg-card); border: 2px solid var(--primary); border-radius: var(--radius);
  padding: 8px 14px; display: inline-block; margin-bottom: 14px; font-variant-numeric: tabular-nums;
}
.ra-plate .ra-city { font-size: 13px; font-weight: 600; color: var(--muted); letter-spacing: 1px; text-transform: uppercase; }
#ra-readout .fx-table th { width: 90px; vertical-align: top; }
@media (max-width: 1100px) { .ra-wrap { grid-template-columns: 1fr; } }

/* Scene-list camera group headers */
.scene-group-header {
  font-size: 11px; font-weight: 700; letter-spacing: .9px; text-transform: uppercase;
  color: var(--muted); padding: 12px 4px 4px; margin-top: 6px;
  border-bottom: 1px solid var(--border);
}
.scene-group-header:first-child { margin-top: 0; }

/* Header CTA group (two buttons stacked on the right) */
.cta-group { display: flex; gap: 10px; flex-wrap: wrap; }

/* ---- Config / calibration page ---- */
.back { display: inline-block; margin-bottom: 8px; font-size: 12px; text-decoration: none; color: var(--primary); }
main.cfg-main { display: flex; flex-direction: column; gap: 20px; }
.cfg-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 16px 18px; }
.cfg-card-head h2 { margin: 0 0 2px; font-size: 15px; font-weight: 700; }
.cfg-meta { color: var(--muted); font-size: 12px; margin-bottom: 12px; }
.cfg-views { display: grid; grid-template-columns: 1fr 1fr 300px; gap: 16px; align-items: start; }
.cfg-fig { margin: 0; }
.cfg-fig figcaption { font-size: 12px; color: var(--fg-secondary); margin-bottom: 6px; }
.cfg-fig canvas { width: 100%; height: auto; border: 1px solid var(--border); border-radius: var(--radius); background: #1b1d22; display: block; }
.cfg-side { display: flex; flex-direction: column; gap: 14px; }
.cfg-table { width: 100%; border-collapse: collapse; font-size: 12px; }
.cfg-table th { text-align: left; color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: .4px; font-size: 10px; padding-bottom: 4px; }
.cfg-table td { padding: 3px 6px 3px 0; border-top: 1px solid var(--border); font-variant-numeric: tabular-nums; }
.cfg-table .dot { display: inline-flex; align-items: center; justify-content: center; width: 18px; height: 18px; border-radius: 50%; color: #fff; font-weight: 700; font-size: 11px; }
.cfg-pose { font-size: 12px; background: var(--bg-secondary); border-radius: var(--radius); padding: 10px 12px; }
.cfg-pose .cfg-pose-h { font-weight: 700; text-transform: uppercase; letter-spacing: .5px; font-size: 10px; color: var(--muted); margin-bottom: 4px; }
.cfg-pose div { font-variant-numeric: tabular-nums; }
@media (max-width: 1000px) { .cfg-views { grid-template-columns: 1fr; } }

/* Config: interactive calibration */
.cfg-badge { font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: .5px; padding: 2px 7px; border-radius: 10px; background: var(--bg-accent); color: var(--muted); vertical-align: middle; margin-left: 8px; }
.cfg-badge.on { background: var(--primary-dim); color: var(--primary); }
.cfg-canvas-edit { cursor: grab; touch-action: none; }
.cfg-canvas-edit.dragging { cursor: grabbing; }
.cfg-table input.cfg-num { width: 62px; font-family: var(--font-mono); font-size: 12px; padding: 3px 5px; border: 1px solid var(--border); border-radius: 4px; background: var(--bg-card); color: var(--text); font-variant-numeric: tabular-nums; }
.cfg-table input.cfg-num:focus { outline: none; border-color: var(--primary); }
.cfg-test { background: var(--bg-secondary); border-radius: var(--radius); padding: 10px 12px; }
.cfg-xlabel { font-size: 11px; color: var(--muted); display: block; margin-bottom: 4px; }
.cfg-xval { color: var(--primary); font-weight: 600; }
.cfg-test input[type="range"] { width: 100%; accent-color: var(--primary); }
.cfg-lanes { display: flex; gap: 6px; margin-top: 8px; }
.cfg-lane { flex: 1; font-family: var(--font-mono); font-size: 11px; padding: 5px 4px; border: 1px solid var(--border); border-radius: 5px; background: var(--bg-card); color: var(--fg-secondary); cursor: pointer; }
.cfg-lane.on { border-color: var(--primary); background: var(--primary-dim); color: var(--primary); }
.cfg-actions { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.cfg-btn { font-family: var(--font-mono); font-size: 12px; padding: 7px 14px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--bg-card); color: var(--text); cursor: pointer; }
.cfg-btn:hover { border-color: var(--primary); }
.cfg-btn.primary { background: var(--primary); border-color: var(--primary); color: var(--primary-fg); font-weight: 600; }
.cfg-btn.primary:hover { background: #b8650a; }
.cfg-status { font-size: 12px; color: var(--muted); }
.cfg-status.dirty { color: var(--primary); }
.cfg-status.ok { color: var(--green); }
.cfg-status.err { color: var(--red); }

/* Config two-row card: 3 views on top, 3 control groups below */
.cfg-row1 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; align-items: start; }
.cfg-row2 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; margin-top: 16px; align-items: start; }
.cfg-ctl { background: var(--bg-secondary); border-radius: var(--radius); padding: 12px 14px; }
.cfg-pose-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 8px 10px; }
.cfg-poselab { display: flex; flex-direction: column; gap: 3px; font-size: 10px; color: var(--muted); text-transform: uppercase; letter-spacing: .4px; }
.cfg-poselab input.cfg-num { width: 100%; }
@media (max-width: 1100px) { .cfg-row1, .cfg-row2 { grid-template-columns: 1fr; } }
.cfg-check { margin-top: 10px; font-size: 12px; padding: 7px 10px; border-radius: var(--radius); background: var(--bg-card); border: 1px solid var(--border); }
.cfg-check.ok { color: var(--green); border-color: var(--green-dim); }
.cfg-check.err { color: var(--red); border-color: var(--red-dim); }
.cfg-check .cfg-check-sub { color: var(--muted); font-weight: 400; }