/* ===========================================================================
   Le socle des pages de demonstration.

   Memes jetons que la page d'accueil, meme niveau d'execution : une demo qui
   n'aurait pas l'air du meme site n'aurait pas l'air d'etre de la meme main.
   =========================================================================== */

:root{
  --ink:#0B0D11;
  --ink2:#12161D;
  --paper:#FFFFFF;
  --cool:#EFF1F5;
  --line:#DFE3EA;
  --dim:#666C76;
  --dim-d:#9AA1AC;
  --accent:#1B4FD8;
  --accent-lt:#7BA4FF;
  --soft:rgba(27,79,216,.09);

  --disp:'Space Grotesk',Verdana,sans-serif;
  --sans:'IBM Plex Sans',system-ui,-apple-system,'Segoe UI',Helvetica,Arial,sans-serif;
  --mono:'IBM Plex Mono',ui-monospace,Consolas,monospace;

  --r:14px;
  --r-card:22px;
  --wrap:1200px;
  --gut:clamp(18px,4vw,44px);
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font:400 17px/1.62 var(--sans);overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:inherit}

.wrap{max-width:var(--wrap);margin:0 auto;padding-inline:var(--gut)}
.sec{padding-block:clamp(52px,7vw,92px)}
.cool{background:var(--cool)}

h1,h2,h3,.mark,.disp{font-family:var(--disp);font-weight:700;letter-spacing:-.03em;margin:0}
h1{font-size:clamp(28px,4.2vw,48px);line-height:1.04;letter-spacing:-.038em}
h2{font-size:clamp(24px,3.2vw,38px);line-height:1.08}
h3{font-size:19px;line-height:1.25;letter-spacing:-.018em}
p{margin:0 0 18px;max-width:40em}
p:last-child{margin-bottom:0}
.lead{font-size:clamp(16.5px,1.4vw,19px);line-height:1.55;color:var(--dim)}
.tight{max-width:36em}

.lab{display:inline-flex;align-items:center;gap:10px;font-size:12px;font-weight:600;
  letter-spacing:.16em;text-transform:uppercase;color:var(--dim)}
.lab::before{content:"";width:22px;height:1px;background:currentColor;flex:0 0 auto}
.on-dark .lab,.on-dark .lead{color:var(--dim-d)}

/* ---------- navigation de retour ---------- */

.nav{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.94);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;gap:18px;padding-block:13px}
.mark{font-size:18px}
.mark i{color:var(--accent);font-style:normal}
.retour{display:inline-flex;align-items:center;gap:8px;font-size:14.5px;color:var(--dim);text-decoration:none}
.retour:hover{color:var(--ink)}
.pousse{margin-left:auto}

.btn{
  display:inline-flex;align-items:center;gap:10px;text-decoration:none;cursor:pointer;border:0;
  font-family:var(--sans);font-weight:600;font-size:16px;
  background:var(--accent);color:#fff;padding:14px 24px;border-radius:var(--r);
  box-shadow:0 10px 26px rgba(27,79,216,.26);
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease;
}
.btn:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(27,79,216,.34);background:#1746c2}
.btn.ghost{background:transparent;color:var(--ink);box-shadow:inset 0 0 0 1px var(--line)}
.btn.ghost:hover{background:var(--ink);color:#fff;box-shadow:inset 0 0 0 1px var(--ink)}
.on-dark .btn.ghost{color:#fff;box-shadow:inset 0 0 0 1px rgba(255,255,255,.28)}
.on-dark .btn.ghost:hover{background:#fff;color:var(--ink)}
.btn.sm{padding:10px 17px;font-size:14.5px}
.ico{width:17px;height:17px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;flex:0 0 auto}

/* ---------- la scene : fond de section, pleine largeur, pas de cadre ---------- */

.scene-sec{
  position:relative;background:#0A0C10;color:#E7EAF0;overflow:hidden;
  min-height:min(92vh,880px);display:flex;flex-direction:column;justify-content:space-between;
  padding-block:clamp(40px,6vw,74px);
}
.scene-sec canvas{position:absolute;inset:0;width:100%;height:100%;display:block;z-index:0}
/* Voile de lisibilite, pas un effet : sans lui le texte se perd sur la scene. */
.scene-sec::before{
  content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background:
    radial-gradient(120% 85% at 8% 0%,rgba(10,12,16,.94),rgba(10,12,16,.42) 42%,transparent 70%),
    linear-gradient(to top,rgba(10,12,16,.90),rgba(10,12,16,.22) 30%,transparent 56%);
}
.scene-sec .wrap{position:relative;z-index:2}
.scene-sec .haut{max-width:34em}

.pupitre{
  display:grid;grid-template-columns:minmax(0,1.4fr) minmax(290px,.6fr);gap:clamp(20px,3vw,44px);
  align-items:end;margin-top:clamp(24px,4vw,54px);
}
@media (max-width:900px){.pupitre{grid-template-columns:1fr;align-items:stretch}}

.colonne{display:grid;gap:clamp(16px,2.2vw,24px);min-width:0}

.releve{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px 26px}
@media (min-width:900px){.releve{grid-template-columns:repeat(4,minmax(0,1fr))}}
.releve>div{min-width:0}
.releve .k{display:block;font-size:11.5px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--dim-d)}
.releve .v{display:block;font-family:var(--disp);font-weight:700;font-size:clamp(20px,2.2vw,29px);
  line-height:1.05;color:#fff;margin-top:6px;letter-spacing:-.03em;font-variant-numeric:tabular-nums}
.releve .u{display:block;font-size:12.5px;color:var(--dim-d);margin-top:3px}

.commandes{display:flex;flex-direction:column;gap:14px;min-width:min(300px,100%)}
.reglage label{display:block;font-size:12px;font-weight:600;letter-spacing:.16em;
  text-transform:uppercase;color:var(--dim-d);margin-bottom:9px}
.reglage .val{font-family:var(--mono);font-weight:600;font-size:16px;color:#fff;float:right;letter-spacing:0}
input[type=range]{width:100%;accent-color:#7BA4FF;height:24px;cursor:pointer}
.deux-reglages{display:grid;gap:14px}

.pastille{display:inline-flex;align-items:center;gap:7px;align-self:flex-start;font-size:11.5px;font-weight:600;
  letter-spacing:.1em;text-transform:uppercase;background:rgba(255,255,255,.09);color:#fff;
  border-radius:999px;padding:6px 13px;backdrop-filter:blur(6px)}
.pastille.ok{background:rgba(96,214,152,.16);color:#8FE0B0}
.pastille.ko{background:rgba(224,36,63,.18);color:#FF97A6}

.scene-aide{position:absolute;right:clamp(18px,4vw,44px);top:clamp(40px,6vw,74px);z-index:2;
  font-family:var(--mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--dim-d);
  transition:opacity .5s ease}
.scene-repli{position:relative;z-index:2;font-size:15px;color:var(--dim-d);margin-top:20px}
.note-scene{font-size:13px;color:var(--dim-d);margin:0}

.legende{display:flex;flex-wrap:wrap;gap:8px 20px;font-size:12.5px;color:var(--dim-d)}
.legende span{display:inline-flex;align-items:center;gap:7px}
.legende i{width:11px;height:11px;border-radius:3px;flex:0 0 auto}

.bascule{display:inline-flex;background:rgba(255,255,255,.08);border-radius:999px;padding:4px;gap:4px;align-self:flex-start}
.bascule button{border:0;cursor:pointer;font:600 13px/1 var(--sans);color:var(--dim-d);background:transparent;
  padding:9px 15px;border-radius:999px;transition:background .18s ease,color .18s ease}
.bascule button[aria-pressed=true]{background:#fff;color:var(--ink)}
.bascule button:hover{color:#fff}
.bascule button[aria-pressed=true]:hover{color:var(--ink)}

/* Le releve des postes de grue : une ligne par poste, la marge en barre. */
.postes{display:grid;gap:7px;min-width:0}
.postes>div{display:grid;grid-template-columns:minmax(0,1fr) 62px 74px;align-items:center;gap:12px;
  font-size:13px;color:var(--dim-d);padding-bottom:6px;border-bottom:1px solid rgba(255,255,255,.07)}
.postes>div:last-child{border-bottom:0;padding-bottom:0}
.postes .nom{color:#E7EAF0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.postes .ch{font-family:var(--mono);font-size:12px;text-align:right;font-variant-numeric:tabular-nums}
.postes .jauge{height:7px;border-radius:999px;background:rgba(255,255,255,.10);overflow:hidden}
.postes .jauge i{display:block;height:100%;border-radius:999px;transition:width .3s ease,background .3s ease}
.postes>div.hs .nom{color:#FF97A6}

/* La courbe en dents de scie du debit : c'est elle qui porte l'argument. */
.dents{width:100%;height:clamp(112px,13vw,158px);display:block;overflow:visible}
.dents .grille{stroke:rgba(255,255,255,.10);stroke-width:1}
.dents .trace{fill:none;stroke:#7BA4FF;stroke-width:2;stroke-linejoin:round}
.dents .creux{fill:#8FE0B0}
.dents .ici{stroke:#fff;stroke-width:1.5}
.dents .etiq{font-family:var(--mono);font-size:10.5px;fill:var(--dim-d);letter-spacing:.06em}

/* ---------- la methode, sous la scene ---------- */

.methode{display:grid;grid-template-columns:repeat(auto-fit,minmax(255px,1fr));gap:22px;margin-top:36px}
.methode>div{background:var(--paper);border:1px solid var(--line);border-radius:var(--r-card);padding:24px}
.methode .n{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;
  border-radius:999px;background:var(--soft);color:var(--accent);font-family:var(--mono);
  font-weight:600;font-size:13px;margin-bottom:14px}
.methode h3{margin-bottom:8px}
.methode p{font-size:15px;color:var(--dim);margin:0}

.controles{margin-top:30px;display:grid;gap:12px;max-width:44em}
.controles>div{display:grid;grid-template-columns:150px minmax(0,1fr);gap:16px;font-size:15px;
  color:var(--dim);padding-bottom:12px;border-bottom:1px solid var(--line)}
.controles>div:last-child{border-bottom:0;padding-bottom:0}
.controles b{font-family:var(--mono);font-weight:600;font-size:13px;color:var(--ink);letter-spacing:.02em}

.suite{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}

footer{background:var(--ink);color:var(--dim-d);border-top:1px solid rgba(255,255,255,.10);
  padding-block:30px;font-size:14px}
footer .wrap{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:18px}
footer a{text-decoration:none}
footer a:hover{color:#fff}

.monte{opacity:0;transform:translateY(18px)}
.monte.vu{opacity:1;transform:none;transition:opacity .6s ease,transform .6s cubic-bezier(.22,.7,.3,1)}
.monte.d1{transition-delay:.07s}
.monte.d2{transition-delay:.14s}
.monte.d3{transition-delay:.21s}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .monte,.monte.vu{opacity:1;transform:none;transition:none}
  .btn:hover{transform:none}
}

:focus-visible{outline:2px solid var(--accent-lt);outline-offset:3px}