/* Sparktacus — 974 minéral. Tokens basalte/lave. */
:root{
  --basalt:#14110e; --basalt2:#211c17; --basalt3:#2c261f;
  --stone:#efe9e0; --stone2:#e6ddcf;
  --muted:#b7ab9c; --faint:#9a8f80;
  --lava:#e0531f; --lava2:#ff6a33; --lagon:#2a8089;
  --font-sans:'Archivo',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  --font-accent:'Fraunces',Georgia,serif;
  --font-mono:'IBM Plex Mono',ui-monospace,Menlo,Consolas,monospace;
  --maxw:1200px; --pad:clamp(20px,5vw,40px);
  --ease:cubic-bezier(.2,.8,.2,1);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--basalt);color:var(--stone);
  font-family:var(--font-sans);font-size:17px;line-height:1.55;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
a:focus-visible,.btn:focus-visible,button:focus-visible{outline:2px solid var(--lava2);outline-offset:2px;border-radius:2px}
img{display:block;max-width:100%}
button{font:inherit;cursor:pointer}
.container{max-width:var(--maxw);margin:0 auto;padding-inline:var(--pad)}
.ey{font:500 12px/1 var(--font-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--lava2)}
.accent{font-family:var(--font-accent);font-style:italic;font-weight:500;color:var(--lava2)}
h1,h2,h3{margin:0;font-weight:800;letter-spacing:-.03em;line-height:1.02;text-wrap:balance}
p{text-wrap:pretty}
/* Duotone : appliqué via overlay au-dessus de toute image de section */
.duotone{position:relative;overflow:hidden}
.duotone>img{filter:grayscale(1) contrast(1.05) brightness(.85)}
.duotone::after{content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(115deg,rgba(224,83,31,.30),rgba(20,17,14,0) 55%);
  mix-blend-mode:screen}
/* Reveal au scroll */
.reveal{opacity:0;transform:translateY(10px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}
/* Boutons */
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 22px;border-radius:4px;
  font-weight:600;font-size:15px;border:1px solid transparent;transition:.15s var(--ease);
  appearance:none;-webkit-appearance:none;background:transparent}
.btn-lava{background:var(--lava);color:#1a1410}
.btn-lava:hover{background:var(--lava2)}
.btn-ghost{background:transparent;border-color:rgba(239,233,224,.45);color:var(--stone)}
.btn-ghost:hover{border-color:var(--stone);background:rgba(239,233,224,.06)}
/* ===== Header ===== */
header.site{position:sticky;top:0;z-index:50;
  background:color-mix(in srgb,var(--basalt) 86%,transparent);backdrop-filter:blur(10px);
  border-top:2px solid var(--lava);border-bottom:1px solid var(--basalt3)}
.nav{display:flex;align-items:center;justify-content:space-between;padding-block:15px}
.brand{display:flex;align-items:center;gap:9px;font-weight:800;letter-spacing:-.02em;font-size:18px}
.brand .dot{width:9px;height:9px;border-radius:50%;background:var(--lava);box-shadow:0 0 10px var(--lava)}
.links{display:flex;gap:26px}
.links a{font:500 13px var(--font-mono);text-transform:uppercase;letter-spacing:.07em;color:var(--muted)}
.links a:hover{color:var(--stone)}
@media(max-width:680px){.links{display:none}}
/* ===== Hero ===== */
.hero{position:relative;min-height:min(86vh,720px);display:flex;align-items:flex-end}
.hero>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-2}
.hero::before{content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(180deg,rgba(20,17,14,.25),rgba(20,17,14,.55) 45%,rgba(20,17,14,.94))}
.hero-in{padding-block:48px;position:relative}
.hero .place{position:absolute;top:-340px;right:var(--pad);font:500 11px var(--font-mono);
  letter-spacing:.12em;text-transform:uppercase;color:#e9ddca;border:1px solid rgba(233,221,202,.3);
  padding:5px 10px;border-radius:3px}
@media(max-width:680px){.hero .place{display:none}}
.hero .ey{display:block;margin-bottom:18px}
.hero h1{font-size:clamp(34px,6vw,64px);max-width:18ch}
.hero .lead{margin-top:22px;max-width:54ch;font-size:clamp(16px,2vw,19px);color:#ddd2c2}
.cta{display:flex;gap:14px;margin-top:30px;flex-wrap:wrap}
/* ===== Engagements ===== */
.engage{border-bottom:1px solid var(--basalt3)}
.engage-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.engage-grid>div{padding:24px 22px 24px 0;border-right:1px solid var(--basalt3);display:flex;flex-direction:column;gap:10px}
.engage-grid>div:first-child{padding-left:0}
.engage-grid>div:not(:first-child){padding-left:22px}
.engage-grid>div:last-child{border-right:none}
.engage .l{font:500 10px var(--font-mono);letter-spacing:.13em;text-transform:uppercase;color:var(--muted)}
.engage .v{font-weight:600;font-size:18px;line-height:1.25}
.engage .v small{display:block;font-weight:400;font-size:13px;color:var(--muted);margin-top:4px}
@media(max-width:680px){.engage-grid{grid-template-columns:1fr 1fr}.engage-grid>div{border-right:none;padding:18px 0}}
/* ===== Ce qu'on automatise ===== */
.block{padding-block:clamp(64px,10vw,120px);border-bottom:1px solid var(--basalt3)}
.block-h{font-size:clamp(26px,4vw,46px);max-width:20ch;margin:10px 0 0}
.mods{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--basalt3);
  border:1px solid var(--basalt3);margin-top:48px}
.mod{background:var(--basalt);padding:32px 28px;display:flex;flex-direction:column;gap:12px;
  transition:background .25s var(--ease)}
.mod:hover{background:var(--basalt2)}
.mod-n{font:500 11px var(--font-mono);letter-spacing:.13em;color:var(--lava2)}
.mod h3{font-size:21px;font-weight:700;letter-spacing:-.02em}
.mod p{margin:0;font-size:15px;color:var(--muted);line-height:1.55}
@media(max-width:780px){.mods{grid-template-columns:1fr}}
/* ===== Démos ===== */
.block-sub{margin:14px 0 0;max-width:60ch;color:var(--muted)}
.demo{margin-top:36px;border:1px solid var(--basalt3);border-radius:10px;background:var(--basalt2);overflow:hidden}
.demo-bar{padding:12px 18px;border-bottom:1px solid var(--basalt3);font:500 12px var(--font-mono);color:var(--muted);display:flex;align-items:center;gap:9px}
.demo-dot{width:8px;height:8px;border-radius:50%;background:var(--lava);box-shadow:0 0 9px var(--lava)}
.inbox{list-style:none;margin:0;padding:8px;display:flex;flex-direction:column;gap:6px;min-height:240px}
.mail{display:grid;grid-template-columns:auto 1fr auto;gap:12px;align-items:center;padding:12px 14px;
  border:1px solid var(--basalt3);border-radius:6px;background:var(--basalt);
  transition:transform .35s var(--ease),opacity .35s var(--ease),border-color .35s}
.mail .from{font:500 12px var(--font-mono);color:var(--muted)}
.mail .subj{font-size:14px;color:var(--stone)}
.mail .cat{font:500 10px var(--font-mono);letter-spacing:.1em;text-transform:uppercase;padding:4px 9px;border-radius:3px;opacity:0;transition:opacity .35s}
.mail.sorted .cat{opacity:1}
.cat.urgent{color:#ffd0c2;border:1px solid var(--lava);background:rgba(224,83,31,.15)}
.cat.devis{color:#cfeae0;border:1px solid var(--lagon);background:rgba(42,128,137,.15)}
.cat.info{color:var(--muted);border:1px solid var(--basalt3)}
.mail .draft{grid-column:2/4;font-size:13px;color:var(--muted);font-style:italic;max-height:0;overflow:hidden;transition:max-height .35s}
.mail.sorted .draft{max-height:40px;margin-top:6px}
.demo-actions{display:flex;gap:12px;align-items:center;padding:14px 18px;border-top:1px solid var(--basalt3);flex-wrap:wrap}
.demo-note{font:500 12px var(--font-mono);color:var(--lava2)}
.teasers{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--basalt3);border:1px solid var(--basalt3);margin-top:1px}
.teaser{background:var(--basalt);padding:26px;display:flex;flex-direction:column;gap:8px}
.teaser h3{font-size:18px;font-weight:700}
.teaser p{margin:0;font-size:14px;color:var(--muted)}
@media(max-width:680px){.teasers{grid-template-columns:1fr}}
/* ===== Méthode ===== */
.steps{list-style:none;margin:48px 0 0;padding:0;display:grid;grid-template-columns:repeat(4,1fr);
  gap:1px;background:var(--basalt3);border:1px solid var(--basalt3)}
.steps li{background:var(--basalt);padding:28px 24px;display:flex;flex-direction:column;gap:10px}
.s-n{font:500 11px var(--font-mono);letter-spacing:.13em;color:var(--lava2)}
.steps h3{font-size:18px;font-weight:700}
.steps p{margin:0;font-size:14px;color:var(--muted)}
@media(max-width:780px){.steps{grid-template-columns:1fr 1fr}}
@media(max-width:480px){.steps{grid-template-columns:1fr}}
/* ===== Travailler avec nous ===== */
.work-grid{display:grid;grid-template-columns:1fr 1.4fr;gap:48px;align-items:start}
.work-body p{margin:0 0 24px;font-size:18px;color:var(--stone);max-width:52ch}
@media(max-width:780px){.work-grid{grid-template-columns:1fr;gap:24px}}
/* ===== Contact ===== */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.email-line{margin-top:28px;display:flex;align-items:center;gap:10px;color:var(--muted)}
.email-img{vertical-align:middle;filter:none}
.cform{display:flex;flex-direction:column;gap:16px;background:var(--basalt2);border:1px solid var(--basalt3);border-radius:10px;padding:28px}
.cform label{display:flex;flex-direction:column;gap:7px;font:500 11px var(--font-mono);letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.cform input,.cform textarea{font:400 15px var(--font-sans);color:var(--stone);background:var(--basalt);border:1px solid var(--basalt3);border-radius:5px;padding:11px 13px;outline:none}
.cform input:focus,.cform textarea:focus{border-color:var(--lava)}
.cform-note{margin:0;font:500 12px var(--font-mono);color:var(--lava2)}
@media(max-width:780px){.contact-grid{grid-template-columns:1fr;gap:28px}}
/* ===== Démos dialogue (téléphone + assistant) ===== */
.demo-intro{margin-top:48px}
.call,.chat{display:flex;flex-direction:column;gap:10px;padding:18px;min-height:200px;max-height:360px;overflow-y:auto}
.call:empty::before,.chat:empty::before{content:"Cliquez sur le bouton pour lancer la démo";margin:auto;color:var(--faint);font:500 12px var(--font-mono);letter-spacing:.04em}
.bubble{max-width:80%;padding:10px 13px;border-radius:10px;font-size:14px;line-height:1.45;border:1px solid var(--basalt3);animation:bubbleIn .28s var(--ease)}
.bubble .who{display:block;font:500 10px var(--font-mono);letter-spacing:.1em;text-transform:uppercase;margin-bottom:4px;color:var(--faint)}
.bubble.agent,.bubble.bot{align-self:flex-start;background:var(--basalt);border-color:rgba(224,83,31,.35)}
.bubble.agent .who,.bubble.bot .who{color:var(--lava2)}
.bubble.client,.bubble.user{align-self:flex-end;background:var(--basalt3);color:var(--stone)}
@keyframes bubbleIn{from{opacity:0;transform:translateY(7px)}to{opacity:1;transform:none}}
@media (prefers-reduced-motion:reduce){.bubble{animation:none}}
.notif{margin:0 18px 4px;border:1px solid rgba(224,83,31,.4);background:rgba(224,83,31,.08);border-radius:10px;padding:16px 18px;animation:notifIn .4s var(--ease)}
.notif[hidden]{display:none}
@keyframes notifIn{from{opacity:0;transform:scale(.96)}to{opacity:1;transform:none}}
.notif-h{font:600 13px var(--font-sans);color:var(--lava2);display:flex;align-items:center;gap:9px;margin-bottom:12px}
.notif-h::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--lava);box-shadow:0 0 9px var(--lava)}
.notif-fields{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:12px 24px}
.notif-fields li{font-size:14px;color:var(--stone)}
.notif-fields .k{display:block;font:500 10px var(--font-mono);letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-bottom:3px}
@media(max-width:600px){.notif-fields{grid-template-columns:1fr 1fr}}
/* ===== Footer ===== */
.site-ftr{background:var(--basalt2);padding-block:24px}
.ftr-in{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap}
.ftr-meta{font:500 11px var(--font-mono);letter-spacing:.06em;color:var(--faint)}
.ftr-links{display:flex;gap:20px}
.ftr-links a{font:500 12px var(--font-mono);letter-spacing:.04em;color:var(--muted)}
.ftr-links a:hover{color:var(--stone)}
/* ===== Bouton remonter en haut ===== */
.to-top{position:fixed;right:22px;bottom:22px;z-index:60;width:46px;height:46px;border-radius:50%;
  background:var(--lava);color:#1a1410;border:none;display:inline-flex;align-items:center;justify-content:center;
  box-shadow:0 6px 20px rgba(0,0,0,.4);opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .25s var(--ease),transform .25s var(--ease),background .15s var(--ease)}
.to-top.show{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:var(--lava2)}