:root{--bg:#07142a;--panel:#0b1d3a;--line:#1d3a66;--ink:#eaf4ff;--muted:#86a3c9;--cyan:#6fd3ff;--accent:#ff9a3c}
*{box-sizing:border-box}
html,body{margin:0;height:100%;background:var(--bg);color:var(--ink);font:14px/1.4 "IBM Plex Sans Condensed","DejaVu Sans",system-ui,sans-serif}
.top{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:10px 18px;border-bottom:1px solid var(--line);background:linear-gradient(90deg,#0a1a33,#0c2244)}
.kicker{display:block;font-size:11px;letter-spacing:.14em;color:var(--muted)}
h1{margin:0;font-size:20px;letter-spacing:.04em}
h2{margin:0 0 8px;font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);font-weight:600}
.tabs{display:flex;gap:4px}
.tabs button,.seg button,.list button,.btn{font:inherit;color:var(--ink);background:#0e2547;border:1px solid var(--line);border-radius:6px;padding:7px 12px;cursor:pointer}
.tabs button.on,.seg button.on,.list button.on{background:#14386b;border-color:var(--cyan);box-shadow:inset 0 0 0 1px var(--cyan)}
.tabs button:hover,.seg button:hover,.list button:hover,.btn:hover{border-color:var(--cyan)}
.layout{display:grid;grid-template-columns:290px 1fr;height:calc(100% - 59px)}
.side{border-right:1px solid var(--line);background:var(--panel);padding:16px;overflow:auto;display:flex;flex-direction:column;gap:18px}
.list{display:flex;flex-direction:column;gap:6px}
.list button{text-align:left;display:flex;flex-direction:column;padding:8px 12px}
.list button small{color:var(--muted);font-size:12px}
.seg{display:grid;grid-template-columns:repeat(3,1fr);gap:4px}
.info dl{display:grid;grid-template-columns:auto 1fr;gap:4px 10px;margin:0}
.info dt{color:var(--muted)}
.info dd{margin:0;font-family:"IBM Plex Mono","DejaVu Sans Mono",monospace;font-size:13px;color:var(--cyan)}
.info p{margin:0 0 10px;color:var(--ink);font-size:13px}
.info .dl{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}
.info .dl a{color:var(--accent);font-size:12px;text-decoration:none;border:1px solid #5a3a1c;border-radius:4px;padding:2px 6px}
.tools{display:flex;flex-direction:column;gap:8px}
.chk{display:flex;gap:8px;align-items:center;color:var(--ink);cursor:pointer}
.help{margin:auto 0 0;color:var(--muted);font-size:12px}
.stage{position:relative;display:grid;min-height:0;overflow:hidden}
.stage[data-view="3d"]{grid-template-columns:1fr}
.stage[data-view="3d"] .paneplan{display:none}
.stage[data-view="plan"]{grid-template-columns:1fr}
.stage[data-view="plan"] .pane3d{display:none}
.stage[data-view="split"]{grid-template-columns:1fr 1.2fr}
.pane{position:relative;min-width:0;min-height:0}
.pane3d canvas{display:block;width:100%;height:100%;cursor:grab;touch-action:none}
.pane3d canvas.grabbing{cursor:grabbing}
.hud{position:absolute;left:14px;top:12px;display:flex;gap:8px;pointer-events:none}
.hud span{background:rgba(7,20,42,.78);border:1px solid var(--line);border-radius:5px;padding:4px 9px;font-size:13px}
#hud-mode{color:var(--cyan)}
.loading{position:absolute;inset:0;display:grid;place-items:center;color:var(--muted);background:rgba(7,20,42,.35);pointer-events:none;opacity:0;transition:opacity .2s}
.loading.show{opacity:1}
.paneplan{display:flex;flex-direction:column;border-left:1px solid var(--line);background:#0a1a33}
.planbar{display:flex;justify-content:space-between;padding:8px 12px;border-bottom:1px solid var(--line);color:var(--muted);font-size:13px}
.planbar a{color:var(--cyan);text-decoration:none}
.planwrap{flex:1;overflow:auto;display:grid;place-items:center;padding:10px}
.planwrap img{width:100%;height:auto;max-height:100%;object-fit:contain}
.stage[data-view="plan"] .planwrap img{max-width:1600px}
@media (max-width:980px){
  .layout{grid-template-columns:1fr;grid-template-rows:auto 1fr;height:auto;min-height:calc(100% - 59px)}
  .side{border-right:0;border-bottom:1px solid var(--line);flex-direction:row;flex-wrap:wrap}
  .side section{flex:1 1 240px}
  .stage{height:70vh}
  .stage[data-view="split"]{grid-template-columns:1fr;grid-template-rows:1fr 1fr}
  .top{flex-wrap:wrap}
}

/* Référentiel IA link in top tabs */
.tabs a.tab{font:inherit;color:var(--ink);background:#0e2547;border:1px solid var(--line);border-radius:6px;padding:7px 12px;cursor:pointer;text-decoration:none;display:inline-block}
.tabs a.tab:hover{border-color:var(--cyan)}
.tabs a.tab.on{background:#14386b;border-color:var(--cyan);box-shadow:inset 0 0 0 1px var(--cyan)}