/* =========================================================
   Cas d'usages — une fiche par cas (templates/cas-usages/<cas>.html)
   Chargé après research.css et platform.css : la fiche reprend les
   sections des pages plateformes (pf-*) et n'ajoute ici que les siennes.
   ========================================================= */

/* ---------- En-tête : le badge du cas et la scène du flux ---------- */
.cu-badge{display:inline-flex;align-items:center;gap:10px;padding:7px 14px;border:1px solid rgba(255,59,48,.5);border-radius:999px;font:500 12px/1 var(--f-mono);letter-spacing:.14em;text-transform:uppercase;color:#fff}
.cu-badge::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--ps-led);box-shadow:var(--glow-sm)}
.cu-scene{margin:0}
.cu-scene svg{width:100%;height:auto;overflow:visible}
.cu-scene .cu-wires path{fill:none;stroke:#2C3139;stroke-width:2}
.cu-scene .cu-wires-led path{fill:none;stroke:#FF2D2D;stroke-width:2;stroke-dasharray:6 14;animation:cuFlow 1.6s linear infinite}
@keyframes cuFlow{to{stroke-dashoffset:-40}}
.cu-scene text{font-family:var(--f-body)}
.cu-scene .cu-mono{font:600 9.5px/1 var(--f-mono);letter-spacing:.08em;fill:#F5F6F7}
.cu-scene .cu-small{font-size:9.5px;fill:#9097A1}
.cu-scene .cu-txt{font-size:10.5px;font-weight:600;fill:#D5D8DD}
.cu-scene .cu-chip{font:700 8px/1 var(--f-mono);fill:#fff}
.cu-scene .cu-dim{font:800 17px/1 var(--f-display);fill:#fff;letter-spacing:-.01em}
.cu-scene .cu-warn{fill:#F2B43C}
.cu-scene .cu-dot{filter:drop-shadow(0 0 4px rgba(63,208,106,.9))}
.cu-scene .cu-erp{font:700 11px/1 var(--f-body);fill:#111317}
.cu-scene .cu-dark-small{font-size:9.5px;fill:#3A3F47}
.cu-scene .cu-dark-tiny{font-size:9px;fill:#3A3F47}
.cu-scene .cu-badge-t{font:700 9px/1 var(--f-mono);letter-spacing:.08em;fill:#7A4B00}
.cu-scene .cu-foot{fill:#6B717B;font-size:10px;letter-spacing:.2em}

/* ---------- Avant / après, avec la fiche client à côté ---------- */
.cu-intro{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:clamp(20px,2.4vw,32px);align-items:start}
.cu-intro .pf-ba{grid-template-columns:minmax(0,1fr) 40px minmax(0,1fr)}
.cu-facts{padding:24px 24px 20px;background:var(--ps-ink-text);border-radius:14px;color:var(--ps-fog);box-shadow:0 24px 50px -30px rgba(17,19,23,.6)}
.cu-facts .tag{display:block;margin-bottom:14px;font:500 12px/1 var(--f-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--ps-signal-text)}
.cu-facts dl{margin:0;display:grid;grid-template-columns:auto minmax(0,1fr);gap:9px 14px;align-items:baseline}
.cu-facts dt{font:500 10.5px/1.2 var(--f-mono);letter-spacing:.12em;text-transform:uppercase;color:#7D838D}
.cu-facts dd{margin:0;font-weight:600;color:#fff;line-height:1.4;font-size:15px}

/* ---------- Le déroulé : une étape, ce qu'elle fait, l'avant et l'après ---------- */
.cu-flow{list-style:none;margin:0;padding:0;display:grid;gap:14px;counter-reset:none}
.cu-flow>li{display:grid;grid-template-columns:64px minmax(0,1fr);gap:20px;padding:22px 24px;background:var(--ps-graphite);border:1px solid var(--ps-steel);border-radius:14px;position:relative}
.cu-flow>li::after{content:"";position:absolute;left:55px;top:100%;width:2px;height:14px;background:linear-gradient(var(--ps-signal),transparent)}
.cu-flow>li:last-child::after{display:none}
.cu-flow .n{display:grid;place-items:center;width:52px;height:52px;border-radius:12px;border:1px solid rgba(255,59,48,.5);background:rgba(229,38,43,.08);font:600 15px/1 var(--f-mono);color:var(--ps-signal-text);box-shadow:inset 0 0 18px rgba(229,38,43,.15)}
html body .cu-flow h3{font-size:21px;margin:2px 0 8px}
.cu-flow p{margin:0;color:var(--ps-fog);line-height:1.65}
.cu-ba{display:flex;flex-wrap:wrap;gap:8px 22px;margin-top:14px!important;padding-top:12px;border-top:1px dashed var(--ps-steel);font-size:14.5px}
.cu-ba s{text-decoration:none;color:#7D838D;padding-left:22px;position:relative}
.cu-ba s::before{content:"";position:absolute;left:0;top:.7em;width:12px;height:2px;background:#5E646E}
.cu-ba b{color:#fff;font-weight:600;padding-left:22px;position:relative}
.cu-ba b::before{content:"";position:absolute;left:0;top:.35em;width:12px;height:12px;border-radius:3px;background:var(--ps-led);box-shadow:var(--glow-sm)}

/* ---------- Les règles, et l'exemple réel ---------- */
.cu-two{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(28px,4vw,64px);align-items:start}
html body .cu-two h2{font-size:clamp(26px,3vw,40px);line-height:1.12;margin:16px 0 22px;color:var(--ps-ink-text)}
.cu-rules{list-style:none;margin:0;padding:0;display:grid;gap:16px}
.cu-rules li{position:relative;padding-left:30px;color:var(--ps-ink-soft);line-height:1.6}
.cu-rules li::before{content:"";position:absolute;left:0;top:.25em;width:16px;height:16px;border-radius:4px;border:1.5px solid var(--ps-signal);background:linear-gradient(135deg,transparent 45%,var(--ps-signal) 45%,var(--ps-signal) 55%,transparent 55%)}
.cu-rules b{color:var(--ps-ink-text)}
.cu-sample{margin:0}
.cu-sample figcaption{margin-bottom:14px;font-weight:600;color:var(--ps-ink-text)}
.cu-sample figcaption .tag{display:block;margin-bottom:8px;font:500 12px/1 var(--f-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--ps-signal-text-light)}
.cu-card{padding:22px 24px;background:var(--ps-ink-text);border-radius:14px;color:var(--ps-fog);box-shadow:0 30px 60px -34px rgba(17,19,23,.7)}
html body .zone-light .cu-card h3,html body .cu-card h3{font:600 14px/1.2 var(--f-mono);letter-spacing:.08em;text-transform:uppercase;color:#fff}
.cu-card .cu-meta{margin:6px 0 14px;color:#9097A1;font-size:14px}
.cu-card table{width:100%;border-collapse:collapse;font-size:14px}
.cu-card th,.cu-card td{padding:7px 0;border-bottom:1px solid #23272E;text-align:left;vertical-align:top}
.cu-card th{font-weight:500;color:#9097A1;padding-right:14px;white-space:nowrap}
.cu-card td{color:#fff;font-weight:600}
.cu-alert{margin:16px 0 0;padding:12px 14px;border:1px solid rgba(242,180,60,.5);border-radius:10px;background:rgba(242,180,60,.08);color:#F6CD7A;font-size:14px;line-height:1.5}
.cu-alert b{color:#F2B43C}
.cu-note{margin:12px 0 0;font-size:14px;color:var(--ps-ink-soft)}

/* ---------- Le conseiller du site ---------- */
.cu-chat{display:flex;flex-direction:column;gap:10px;padding:22px;background:var(--ps-graphite);border:1px solid var(--ps-steel);border-radius:16px}
.cu-chat p{margin:0;max-width:86%;padding:11px 14px;border-radius:14px;line-height:1.5;font-size:15px}
.cu-chat .me{align-self:flex-end;background:var(--ps-signal);color:#fff;border-bottom-right-radius:4px}
.cu-chat .bot{align-self:flex-start;background:#1F2329;color:var(--ps-fog);border-bottom-left-radius:4px}

/* ---------- Questions fréquentes ---------- */
.cu-faq{display:grid;gap:10px;max-width:900px}
.cu-faq details{background:var(--ps-graphite);border:1px solid var(--ps-steel);border-radius:12px;padding:0 22px}
.cu-faq details[open]{border-color:rgba(255,59,48,.45)}
.cu-faq summary{list-style:none;cursor:pointer;padding:18px 30px 18px 0;position:relative;font:700 17px/1.35 var(--f-display);color:#fff}
.cu-faq summary::-webkit-details-marker{display:none}
.cu-faq summary::after{content:"+";position:absolute;right:0;top:14px;font:400 24px/1 var(--f-mono);color:var(--ps-signal-text)}
.cu-faq details[open] summary::after{content:"–"}
.cu-faq p{margin:0 0 18px;color:var(--ps-fog);line-height:1.7}

/* ---------- Le catalogue ---------- */
.cu-index-hero{padding-bottom:clamp(48px,6vw,84px)}
html body .cu-index-hero h1{max-width:900px}
.cu-index-hero .lead{max-width:760px}
.cu-items{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.cu-item{position:relative;display:flex;flex-direction:column;padding:24px;border-radius:14px;background:#FAFAFB;border:1px solid #ECECEF;text-decoration:none;color:inherit;overflow:hidden;transition:transform .2s,box-shadow .2s,border-color .2s}
.cu-item::before{content:"";position:absolute;left:0;top:0;right:0;height:3px;background:linear-gradient(90deg,var(--pf),rgba(var(--pf-rgb),0) 80%)}
.cu-item:hover{transform:translateY(-3px);border-color:rgba(var(--pf-rgb),.5);box-shadow:0 24px 40px -28px rgba(var(--pf-rgb),.7)}
.cu-item-top{display:flex;align-items:center;gap:12px}
.cu-item .tile-ico{width:44px;height:44px;border-radius:11px}
.cu-item .tile-ico svg{width:22px;height:22px}
.cu-item-top>.tile-ico{background:var(--pf);box-shadow:0 0 16px rgba(var(--pf-rgb),.45)}
.cu-item-tag{font:500 11px/1.3 var(--f-mono);letter-spacing:.12em;text-transform:uppercase;color:var(--pf)}
html body .cu-item h3{margin:18px 0 10px;font-size:20px;line-height:1.25;color:var(--ps-ink-text)}
.cu-item p{margin:0 0 20px;font-size:15px;line-height:1.6;color:var(--ps-ink-soft)}
.cu-item-foot{margin-top:auto;display:flex;align-items:center;gap:10px;padding-top:14px;border-top:1px solid #ECECEF}
.cu-item-pf{display:flex;gap:6px}
.cu-item-pf .tile-ico{width:26px;height:26px;border-radius:7px}
.cu-item-pf .tile-ico svg{width:14px;height:14px}
.cu-item-dept{font-size:13px;color:var(--ps-ink-soft)}
.cu-item-foot>svg{width:18px;height:18px;margin-left:auto;color:var(--pf)}
.cu-next{margin-top:32px;padding:22px 24px;border:1px dashed var(--ps-line);border-radius:14px}
.cu-next .tag{display:block;margin-bottom:14px;font:500 12px/1 var(--f-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--ps-ink-soft)}
.cu-next ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:8px}
.cu-next li{padding:7px 12px;border-radius:999px;background:#F1F2F4;color:var(--ps-ink-soft);font-size:14px}
.cu-profiles p{margin:0 0 14px;color:var(--ps-ink-soft);line-height:1.6}
.cu-profiles a{color:var(--ps-ink-text);font-weight:600;text-decoration:none;border-bottom:1px solid rgba(var(--pf-rgb),.5)}
.cu-profiles a:hover{color:var(--pf)}
@media (max-width:1100px){.cu-items{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:760px){.cu-items{grid-template-columns:minmax(0,1fr)}}

/* ---------- Petits écrans ---------- */
@media (max-width:1100px){.cu-intro{grid-template-columns:minmax(0,1fr)}.cu-two{grid-template-columns:minmax(0,1fr)}}
@media (max-width:760px){
  .cu-intro .pf-ba{grid-template-columns:minmax(0,1fr)}
  .cu-flow>li{grid-template-columns:minmax(0,1fr);gap:12px;padding:18px}
  .cu-flow>li::after{left:42px}
  .cu-flow .n{width:44px;height:44px}
}
@media (prefers-reduced-motion:reduce){.cu-scene .cu-wires-led path{animation:none}}