:root {
  --bg: #0d1014;
  --bg2: #141920;
  --panel: #181e26;
  --panel2: #1f2731;
  --line: #2a3441;
  --line2: #364352;
  --text: #dfe6ee;
  --muted: #8796a8;
  --dim: #5d6b7c;
  --accent: #f5b400;      /* ambre "pupitre" */
  --accent2: #2fd5c5;     /* turquoise LCD */
  --green: #2fbf5b;
  --red: #e5484d;
  --orange: #f08c2e;
  --blue: #3a8dff;
  --violet: #b07cff;
  --lcd-bg: #070a0c;
  --radius: 8px;
  --field: #0f1318;
  --hover: #26303c;
  --top1: #1a212b; --top2: #141920;
  --vp-1: #1b2430; --vp-2: #0b0e12;
  --overlay: rgba(13,16,20,.75);
  --preset1: #222b36; --preset2: #1a2029;
  --badge: #26303c;
  /* couleurs lues par les canvas (timeline, courbes, scène 3D) */
  --tl-head: #10151b; --tl-row1: #151b22; --tl-row2: #131820; --tl-text: #dfe6ee; --tl-dim: #5d6b7c; --tl-grid: #222b36; --tl-axis: #3a4656;
  --scene-fog: #0b0e12; --scene-grid1: #3a4656; --scene-grid2: #1d252f;
  color-scheme: dark;
  --mono: "JetBrains Mono", ui-monospace, monospace;
  --cond: "Barlow Condensed", "Inter", sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: var(--bg); color: var(--text); font: 13px/1.45 "Inter", system-ui, sans-serif; overflow: hidden; }
button, input, select, textarea { font: inherit; color: inherit; }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: var(--line2); border-radius: 10px; border: 2px solid var(--panel); }
::-webkit-scrollbar-track { background: transparent; }

#app { display: grid; grid-template-rows: 58px auto 1fr 230px; height: 100vh; }

/* ---------- barre du haut ---------- */
#topbar { display: flex; align-items: center; gap: 16px; padding: 0 16px; background: linear-gradient(var(--top1), var(--top2)); border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 8px; font-family: var(--cond); font-size: 21px; letter-spacing: .5px; text-transform: uppercase; white-space: nowrap; }
.brand b { color: var(--accent); font-weight: 700; }
.logo { color: var(--accent); font-size: 22px; text-shadow: 0 0 14px rgba(245,180,0,.5); }
.ride-picker { display: flex; gap: 8px; }
.ride-picker select { min-width: 220px; }
.lcd { flex: 1; display: flex; gap: 18px; justify-content: center; padding: 6px 16px; background: var(--lcd-bg); border: 2px solid #2b3238; border-radius: 6px; box-shadow: inset 0 0 18px rgba(0,0,0,.9);
  font-family: var(--mono); font-size: 12px; color: #e8f6ff; overflow: hidden; white-space: nowrap; }
.lcd .k { color: var(--accent2); margin-right: 6px; }
.lcd .amber { color: var(--accent); }
.top-actions { display: flex; align-items: center; gap: 10px; }
.dirty { color: var(--accent); font-size: 12px; }

/* ---------- boutons & champs ---------- */
.btn { border: 1px solid var(--line2); background: var(--panel2); padding: 7px 12px; border-radius: 6px; cursor: pointer; transition: .12s; white-space: nowrap; }
.btn:hover { border-color: var(--muted); background: var(--hover); }
.btn.primary { background: var(--accent); color: #1b1300; border-color: var(--accent); font-weight: 600; }
.btn.primary:hover { filter: brightness(1.1); }
.btn.ghost { background: transparent; }
.btn.small { padding: 4px 9px; font-size: 12px; }
.btn.danger { color: #ffb4b6; border-color: #5b2a2d; }
.btn.danger:hover { background: rgba(229,72,77,.15); }
:root[data-theme="light"] .btn.danger { color: #c4282d; border-color: #f0b7b9; }
@media (prefers-color-scheme: light) { :root:not([data-theme]) .btn.danger { color: #c4282d; border-color: #f0b7b9; } }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.icon-btn { width: 32px; height: 32px; border-radius: 6px; border: 1px solid var(--line2); background: var(--overlay); cursor: pointer; display: inline-grid; place-items: center; }
.icon-btn:hover { border-color: var(--accent); color: var(--accent); }
.icon-btn.big { width: 40px; height: 40px; font-size: 16px; background: var(--accent); color: #1b1300; border-color: var(--accent); }
select, input[type=text], input[type=number], textarea { background: var(--field); border: 1px solid var(--line2); border-radius: 6px; padding: 6px 8px; outline: none; min-width: 0; }
select:focus, input:focus, textarea:focus { border-color: var(--accent); }
input[type=number] { font-family: var(--mono); }
input[type=color] { width: 36px; height: 30px; padding: 0; border: 1px solid var(--line2); border-radius: 6px; background: none; }
textarea { width: 100%; resize: vertical; font-family: var(--mono); font-size: 12px; }
.chk { display: inline-flex; align-items: center; gap: 5px; color: var(--muted); font-size: 12px; cursor: pointer; }
.mono { font-family: var(--mono); }

/* ---------- onglets ---------- */
#tabs { display: flex; gap: 2px; padding: 0 10px; background: var(--bg2); border-bottom: 1px solid var(--line); overflow-x: auto; }
#tabs button { border: 0; background: none; padding: 0 10px; height: 40px; color: var(--muted); cursor: pointer; font-family: var(--cond); font-size: 15px; letter-spacing: .4px; text-transform: uppercase; border-bottom: 2px solid transparent; white-space: nowrap; }
#tabs button:hover { color: var(--text); }
#tabs button.active { color: var(--accent); border-bottom-color: var(--accent); }

/* ---------- zone de travail ---------- */
#workspace { display: grid; grid-template-columns: 1fr 440px; min-height: 0; }
#viewportWrap { position: relative; min-width: 0; background: radial-gradient(ellipse at 50% 40%, var(--vp-1), var(--vp-2) 70%); }
#viewport { position: absolute; inset: 0; }
#viewport canvas { display: block; }
.vp-overlay { position: absolute; display: flex; gap: 6px; align-items: center; }
.vp-overlay.tl { top: 12px; left: 12px; flex-direction: column; align-items: flex-start; }
.vp-overlay.tr { top: 12px; right: 12px; background: var(--overlay); padding: 4px 8px; border-radius: 8px; }
.chip { background: var(--overlay); border: 1px solid var(--line2); padding: 4px 10px; border-radius: 99px; font-size: 12px; color: var(--muted); }
.chip.on { color: var(--green); border-color: #245c36; }
#transport { position: absolute; left: 50%; bottom: 14px; transform: translateX(-50%); display: flex; align-items: center; gap: 10px; padding: 8px 14px; background: var(--overlay);
  border: 1px solid var(--line2); border-radius: 12px; backdrop-filter: blur(6px); width: min(620px, 92%); }
#transport input[type=range] { flex: 1; accent-color: var(--accent); }
#tpTime { min-width: 62px; text-align: right; color: var(--accent); }

#panel { background: var(--panel); border-left: 1px solid var(--line); overflow-y: auto; min-height: 0; }
#panelBody { padding: 16px; }
.section { margin-bottom: 18px; }
.section > h3 { font-family: var(--cond); font-size: 17px; text-transform: uppercase; letter-spacing: .6px; margin: 0 0 10px; color: var(--text); display: flex; flex-direction: column; align-items: flex-start; gap: 1px; }
.section > h3 .tag { font-family: "Inter"; font-size: 11px; color: var(--dim); text-transform: none; letter-spacing: 0; font-weight: 400; }
.section > p.help { color: var(--muted); margin: -4px 0 10px; font-size: 12px; }
.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 10px; }
.grid.three { grid-template-columns: repeat(3, 1fr); }
.field { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.field.full { grid-column: 1 / -1; }
.field > label { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: .4px; }
.field .row { display: flex; gap: 6px; align-items: center; }
.vec { display: grid; grid-template-columns: repeat(3, 1fr); gap: 4px; }
.vec input { width: 100%; }
.vec input:nth-child(1) { border-left: 2px solid #e5484d; }
.vec input:nth-child(2) { border-left: 2px solid #2fbf5b; }
.vec input:nth-child(3) { border-left: 2px solid #3a8dff; }
.toggle, .toggle.field { display: flex; flex-direction: row; align-items: center; gap: 8px; cursor: pointer; padding: 4px 0; }
.toggle input { accent-color: var(--accent); width: 16px; height: 16px; }

.list { display: flex; flex-direction: column; gap: 6px; }
.item { background: var(--panel2); border: 1px solid var(--line); border-radius: var(--radius); }
.item > .item-head { display: flex; align-items: center; gap: 8px; padding: 8px 10px; cursor: pointer; }
.item > .item-head .name { flex: 1; font-weight: 500; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.item > .item-head .meta { color: var(--dim); font-size: 11px; font-family: var(--mono); }
.item > .item-body { padding: 4px 10px 12px; border-top: 1px solid var(--line); }
.item.selected { border-color: var(--accent); box-shadow: 0 0 0 1px rgba(245,180,0,.25); }
.badge { font-size: 10px; text-transform: uppercase; letter-spacing: .5px; padding: 2px 7px; border-radius: 99px; background: var(--badge); color: var(--muted); }
.badge.seat { background: #2b2410; color: var(--accent); }
.badge.deco { background: #1e2a3d; color: #8fbaff; }
.badge.train { background: #24203a; color: var(--violet); }
.dot { width: 9px; height: 9px; border-radius: 50%; flex: none; }
.toolbar { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 10px; }
.empty { color: var(--dim); text-align: center; padding: 18px; border: 1px dashed var(--line2); border-radius: var(--radius); }

/* ---------- presets ---------- */
.presets { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.preset { text-align: left; padding: 10px; border-radius: var(--radius); border: 1px solid var(--line2); background: linear-gradient(160deg, var(--preset1), var(--preset2)); cursor: pointer; }
.preset:hover { border-color: var(--accent); }
.preset .pi { font-size: 22px; }
.preset .pt { font-family: var(--cond); font-size: 16px; text-transform: uppercase; letter-spacing: .4px; display: block; margin-top: 2px; }
.preset .pd { font-size: 11px; color: var(--muted); }

/* ---------- pupitre ---------- */
.console { background: linear-gradient(#c9cdd1, #a9aeb3); border-radius: 12px; padding: 16px; color: #111; box-shadow: inset 0 2px 0 #e5e8ea, 0 6px 20px rgba(0,0,0,.4); }
.console .screen { background: var(--lcd-bg); border: 3px solid #333; border-radius: 6px; padding: 10px 12px; font-family: var(--mono); color: #e8f6ff; font-size: 12px; margin-bottom: 14px; line-height: 1.7; }
.console .screen .k { color: var(--accent2); }
.console .screen .v { color: #fff; }
.console .screen .t { color: var(--accent); }
.pads { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.pad { border: 0; border-radius: 6px; padding: 12px 4px 8px; cursor: pointer; font-weight: 700; font-size: 11px; text-transform: uppercase; letter-spacing: .3px; color: #111;
  box-shadow: inset 0 -4px 0 rgba(0,0,0,.25), 0 2px 0 #777; display: flex; flex-direction: column; align-items: center; gap: 4px; }
.pad span { font-size: 18px; }
.pad:active { transform: translateY(2px); box-shadow: inset 0 -2px 0 rgba(0,0,0,.25); }
.pad.g { background: #27b04f; } .pad.r { background: #d63a3f; color: #fff; } .pad.y { background: #f2b705; } .pad.o { background: #f08c2e; }
.pad.b { background: #2d7ff0; color: #fff; } .pad.w { background: #e9eaec; } .pad.k { background: #3a3f44; color: #fff; }
.pad.estop { background: radial-gradient(circle at 40% 35%, #ff6b6b, #b3171c); color: #fff; border-radius: 50%; aspect-ratio: 1; }

/* ---------- timeline ---------- */
#timeline { border-top: 1px solid var(--line); background: var(--bg2); display: grid; grid-template-rows: 36px 1fr; min-height: 0; }
.tl-head { display: flex; align-items: center; gap: 10px; padding: 0 12px; border-bottom: 1px solid var(--line); }
.tl-title { font-family: var(--cond); font-size: 15px; letter-spacing: .8px; color: var(--accent); }
.hint { color: var(--dim); font-size: 11px; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
.spacer { flex: 1; }
.tl-body { position: relative; min-height: 0; overflow-y: auto; }
#tlCanvas { display: block; width: 100%; cursor: crosshair; }

/* ---------- éditeur de courbe ---------- */
.curve { width: 100%; height: 190px; background: var(--field); border: 1px solid var(--line2); border-radius: var(--radius); display: block; cursor: crosshair; }
.keys { width: 100%; border-collapse: collapse; font-size: 12px; margin-top: 8px; }
.keys th { text-align: left; font-weight: 500; color: var(--muted); font-size: 11px; padding: 4px; }
.keys td { padding: 3px 4px; }
.keys input, .keys select { width: 100%; padding: 4px 6px; }

/* ---------- modale & toasts ---------- */
#modal { position: fixed; inset: 0; background: rgba(5,7,9,.7); display: grid; place-items: center; z-index: 50; backdrop-filter: blur(3px); }
#modal[hidden] { display: none; }
.modal-card { width: min(560px, 94vw); max-height: 88vh; overflow: auto; background: var(--panel); border: 1px solid var(--line2); border-radius: 12px; padding: 20px; box-shadow: 0 20px 60px rgba(0,0,0,.6); }
.modal-card h2 { font-family: var(--cond); text-transform: uppercase; letter-spacing: .6px; margin: 0 0 12px; color: var(--accent); }
.modal-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 16px; }
#toasts { position: fixed; right: 16px; bottom: 16px; display: flex; flex-direction: column; gap: 8px; z-index: 60; }
.toast { background: var(--panel2); border: 1px solid var(--line2); border-left: 4px solid var(--green); padding: 10px 14px; border-radius: 8px; box-shadow: 0 8px 24px rgba(0,0,0,.5); max-width: 380px; animation: tin .2s ease-out; }
.toast.err { border-left-color: var(--red); }
.toast.warn { border-left-color: var(--accent); }
@keyframes tin { from { transform: translateY(8px); opacity: 0; } }
.kbd { font-family: var(--mono); font-size: 11px; padding: 1px 5px; border: 1px solid var(--line2); border-radius: 4px; color: var(--muted); }
.copy { font-family: var(--mono); font-size: 12px; background: var(--field); padding: 6px 8px; border-radius: 6px; border: 1px solid var(--line2); word-break: break-all; }

@media (max-width: 1100px) {
  #workspace { grid-template-columns: 1fr 360px; }
  .lcd { display: none; }
}
@media (max-width: 800px) {
  #app { grid-template-rows: auto auto 1fr 180px; }
  #topbar { flex-wrap: wrap; padding: 8px 16px; }
  #workspace { grid-template-columns: 1fr; grid-template-rows: 45vh 1fr; }
  #panel { border-left: 0; border-top: 1px solid var(--line); }
}

.rule-h { font-family: var(--cond); text-transform: uppercase; letter-spacing: .8px; color: var(--accent2); margin: 14px 0 8px; font-size: 15px; display: flex; gap: 8px; align-items: center; }
.rule-h .tag { font-family: Inter; font-size: 11px; color: var(--dim); text-transform: none; letter-spacing: 0; }

/* ---------- thème clair ---------- */
:root[data-theme="light"] {
  --bg: #eef1f5; --bg2: #e4e8ee; --panel: #ffffff; --panel2: #f4f6f9; --line: #d6dce4; --line2: #c3cbd6;
  --text: #17202b; --muted: #556373; --dim: #7c8897; --accent: #d99a00; --accent2: #0f9e92;
  --field: #ffffff; --hover: #e9edf2; --top1: #ffffff; --top2: #f3f5f8; --vp-1: #f7f9fc; --vp-2: #dde3ea;
  --overlay: rgba(255,255,255,.85); --preset1: #ffffff; --preset2: #f1f4f8; --badge: #e6eaf0;
  --tl-head: #e9edf2; --tl-row1: #f6f8fa; --tl-row2: #ffffff; --tl-text: #17202b; --tl-dim: #7c8897; --tl-grid: #e1e6ec; --tl-axis: #b8c1cc;
  --scene-fog: #e8edf2; --scene-grid1: #a9b4c0; --scene-grid2: #d3dae2;
  color-scheme: light;
}
@media (prefers-color-scheme: light) {
  :root:not([data-theme]) {
    --bg: #eef1f5; --bg2: #e4e8ee; --panel: #ffffff; --panel2: #f4f6f9; --line: #d6dce4; --line2: #c3cbd6;
    --text: #17202b; --muted: #556373; --dim: #7c8897; --accent: #d99a00; --accent2: #0f9e92;
    --field: #ffffff; --hover: #e9edf2; --top1: #ffffff; --top2: #f3f5f8; --vp-1: #f7f9fc; --vp-2: #dde3ea;
    --overlay: rgba(255,255,255,.85); --preset1: #ffffff; --preset2: #f1f4f8; --badge: #e6eaf0;
    --tl-head: #e9edf2; --tl-row1: #f6f8fa; --tl-row2: #ffffff; --tl-text: #17202b; --tl-dim: #7c8897; --tl-grid: #e1e6ec; --tl-axis: #b8c1cc;
    --scene-fog: #e8edf2; --scene-grid1: #a9b4c0; --scene-grid2: #d3dae2;
    color-scheme: light;
  }
}
#themeBtn { min-width: 38px; }

/* la barre d'onglets défile au lieu d'élargir la page */
#app > * { min-width: 0; }
#tabs { min-width: 0; scrollbar-width: thin; }

/* clé sélectionnée sur la courbe */
table.keys tr.key-sel td { background: color-mix(in srgb, var(--accent) 18%, transparent); }
table.keys tr.key-sel td:first-child { box-shadow: inset 3px 0 0 var(--accent); color: var(--accent); }
/* sélection multiple d'éléments */
.item.multi > .item-head { box-shadow: inset 3px 0 0 var(--accent); background: color-mix(in srgb, var(--accent) 10%, transparent); }
.item-head input.pick { margin: 0 6px 0 0; accent-color: var(--accent); cursor: pointer; }
.bulk { border: 1px solid var(--accent); border-radius: 8px; padding: 10px; margin: 8px 0; background: color-mix(in srgb, var(--accent) 6%, transparent); }

/* ---------- panneau : barre d'outils, largeur réglable, mode détaché, sections repliables */
:root { --panel-w: 440px; }
#workspace { grid-template-columns: 1fr 6px var(--panel-w); }
#panelResizer { cursor: col-resize; background: var(--line); opacity: .5; transition: opacity .15s; }
#panelResizer:hover, #panelResizer.drag { opacity: 1; background: var(--accent); }
#panel { position: relative; display: flex; flex-direction: column; }
#panelBody { flex: 1; min-height: 0; }
#panelBar { position: sticky; top: 0; z-index: 5; display: flex; gap: 6px; align-items: center; padding: 8px 10px; background: var(--panel); border-bottom: 1px solid var(--line); }
#panelBar input { flex: 1; min-width: 0; height: 30px; padding: 0 10px; border-radius: 6px; border: 1px solid var(--line2); background: var(--bg, transparent); color: inherit; font: inherit; font-size: 13px; }
#panelBar .grip { cursor: default; color: var(--dim); font-size: 16px; display: none; user-select: none; }
#panelBar .icon-btn.on { background: var(--accent); color: #111; }
.section > h3.sec-h { cursor: pointer; user-select: none; position: relative; padding-left: 18px; }
.section > h3.sec-h::before { content: '▾'; position: absolute; left: 0; top: 3px; color: var(--dim); font-size: 12px; transition: transform .15s; }
.section > h3.sec-h:hover::before { color: var(--accent); }
.section.collapsed > h3.sec-h::before { transform: rotate(-90deg); }
.section.collapsed > h3.sec-h { margin-bottom: 0; }
.section.collapsed > :not(.sec-h) { display: none !important; }
body.nohelp .help { display: none; }
.search-hide { display: none !important; }
.search-hit { outline: 2px solid color-mix(in srgb, var(--accent) 60%, transparent); outline-offset: 2px; border-radius: 4px; }
/* détaché : fenêtre flottante par-dessus la vue 3D */
body.panel-float #workspace { grid-template-columns: 1fr; }
body.panel-float #panelResizer { display: none; }
body.panel-float #panel { position: fixed; z-index: 40; border: 1px solid var(--line2); border-radius: 10px; box-shadow: 0 18px 50px rgba(0,0,0,.35); resize: both; overflow: auto; min-width: 320px; min-height: 240px; }
body.panel-float #panelBar { cursor: move; border-radius: 10px 10px 0 0; }
body.panel-float #panelBar .grip { display: inline; cursor: move; }
@media (max-width: 1100px) { #workspace { grid-template-columns: 1fr 6px min(var(--panel-w), 360px); } }
@media (max-width: 760px) { #workspace { grid-template-columns: 1fr; } #panelResizer { display: none; } }

#btnUndo, #btnRedo { min-width: 34px; padding: 0 8px; font-size: 16px; }
#btnUndo:disabled, #btnRedo:disabled { opacity: .35; cursor: default; }
/* placement en cliquant dans le monde */
.place-banner { position: absolute; left: 50%; top: 58px; transform: translateX(-50%); z-index: 20; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; max-width: calc(100% - 24px);
  background: var(--overlay, rgba(20,24,30,.92)); border: 1px solid #b07cff; color: var(--text); padding: 8px 12px; border-radius: 10px; box-shadow: 0 6px 24px #0005; font-size: 13px; }
.place-banner small { opacity: .7; }
.place-banner .pulse { width: 10px; height: 10px; border-radius: 50%; background: #b07cff; animation: placePulse 1s infinite; }
@keyframes placePulse { 50% { opacity: .25; transform: scale(.7); } }
.btn.place-btn { border-color: #b07cff88; }
.place-bar { margin-top: 6px; align-items: center; }
.place-banner[hidden] { display: none; }
.vp-help { cursor: help; opacity: .7; padding: 0 4px; font-size: 14px; }
/* tous les onglets à portée de main, quelle que soit la taille du panneau */
#tabs { flex-wrap: wrap; overflow-x: visible; }
#tabs button { height: 34px; }
#panelBar { flex-wrap: wrap; }
#panelTabs { display: none; flex-basis: 100%; flex-wrap: wrap; gap: 4px; padding-top: 6px; }
body.panel-float #panelTabs, body.ptabs-pinned #panelTabs { display: flex; }
body.ptabs-pinned:not(.panel-float) #tabs { height: 0; min-height: 0; overflow: hidden; padding: 0; border: 0; }
.ptab { display: inline-flex; align-items: center; gap: 5px; border: 1px solid var(--line2); background: var(--bg2); color: var(--muted); border-radius: 7px; padding: 3px 8px; cursor: pointer; font: 600 12px var(--cond, sans-serif); letter-spacing: .3px; text-transform: uppercase; white-space: nowrap; }
.ptab:hover { color: var(--text); border-color: var(--accent); }
.ptab.active { background: var(--accent); border-color: var(--accent); color: #111; }
.ptab .pi { font-size: 13px; line-height: 1; }
#panel.narrow .ptab .pl { display: none; }
#panel.narrow .ptab { padding: 4px 7px; }
#panel.narrow .ptab .pi { font-size: 15px; }
#panel.tiny #panelSearch { min-width: 80px; }
#panel.narrow .ptab.active .pl { display: inline; }