/* Mezzanine du Nord
   Direction : béton clair + bandes « nuit de chantier », accent jaune sécurité (tasseaux, signalétique).
   Layout : colonnes larges, schémas techniques en vue de face, carte 3D sur fond nuit. Un seul look, couleurs explicites. */
:root{
  --paper:#ECEEED;
  --panel:#FFFFFF;
  --ink:#10161C;
  --muted:#55616B;
  --line:#D0D7D9;
  --amber:#F4B400;
  --amber-hi:#FFC72B;
  --amber-ink:#1B1500;
  --night:#09121A;
  --night-2:#0F1F2C;
  --night-line:#1F3647;
  --night-fg:#E9EFF3;
  --night-muted:#9AADBA;
  --laser:#3BF08F;
  --ok:#0E7A43;
  --danger:#B42318;
  --display:"Archivo","Arial Narrow","Helvetica Neue",Arial,sans-serif;
  --body:"IBM Plex Sans",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --gl:max(clamp(16px,4vw,32px),env(safe-area-inset-left,0px));
  --gr:max(clamp(16px,4vw,32px),env(safe-area-inset-right,0px));
  color-scheme:light;
}
*,*::before,*::after{box-sizing:border-box}
[hidden]{display:none!important}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--body);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:clip}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:60;background:var(--panel)}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}}
:focus-visible{outline:3px solid var(--amber);outline-offset:2px}

.wrap{max-width:1220px;margin-inline:auto;padding-left:var(--gl);padding-right:var(--gr)}
section{padding-block:clamp(56px,8vw,104px)}

h1,h2,h3{font-family:var(--display);font-stretch:116%;font-weight:800;line-height:1.04;letter-spacing:-.012em;margin:0;text-wrap:balance}
h1{font-size:clamp(2.15rem,5vw,4rem)}
h2{font-size:clamp(1.7rem,3.3vw,2.65rem)}
h3{font-size:1.18rem;font-stretch:106%;font-weight:700;line-height:1.22}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-family:var(--mono);font-size:.74rem;font-weight:500;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.eyebrow::before{content:"";width:10px;height:10px;background:var(--amber);flex:none}
.lead{font-size:clamp(1.04rem,1.5vw,1.18rem);color:var(--muted);max-width:62ch}
.hl{color:var(--amber)}
.dark{background:var(--night);color:var(--night-fg)}
.dark .lead,.zone .lead,.phero .lead{color:var(--night-muted)}
.dark .eyebrow,.zone .eyebrow,.phero .eyebrow{color:var(--amber)}
.sec-head{display:grid;gap:14px;max-width:780px;margin-bottom:clamp(28px,4vw,48px)}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;font:600 1rem/1.1 var(--body);padding:15px 22px;border-radius:4px;border:0;background:var(--amber);color:var(--amber-ink);text-decoration:none;cursor:pointer;transition:transform .15s ease,background-color .15s ease}
.btn:hover{background:var(--amber-hi);transform:translateY(-1px)}
.btn:disabled{opacity:.6;cursor:wait;transform:none}
.btn svg{width:18px;height:18px;flex:none}
.btn-line{background:transparent;color:inherit;box-shadow:inset 0 0 0 1.5px currentColor}
.btn-line:hover{background:rgba(128,140,150,.14)}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{background:#26313B}
.actions{display:flex;flex-wrap:wrap;gap:12px}
.tlink{display:inline-flex;align-items:center;gap:8px;font-weight:600;text-decoration:none}
.tlink svg{width:18px;height:18px;transition:transform .15s}
.tlink:hover svg{transform:translateX(3px)}

/* Header */
.site-head{position:sticky;top:env(safe-area-inset-top,0px);z-index:50;background:rgba(255,255,255,.94);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.head-in{display:flex;align-items:center;gap:16px;min-height:70px}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none;margin-right:auto;min-width:0}
.brand svg{width:40px;height:40px;flex:none}
.brand b{display:block;font-family:var(--display);font-stretch:125%;font-weight:800;font-size:1.06rem;letter-spacing:.03em;line-height:1}
.brand small{display:block;white-space:nowrap;margin-top:5px;font-family:var(--mono);font-size:.64rem;letter-spacing:.2em;text-transform:uppercase;color:var(--muted)}
.nav{display:flex;gap:2px}
.nav a{padding:8px 9px;border-radius:4px;text-decoration:none;font-size:.88rem;font-weight:500;white-space:nowrap}
.nav a:hover{background:var(--paper)}
.nav a[aria-current="page"]{box-shadow:inset 0 -2px 0 var(--amber)}
.head-tel{font-family:var(--mono);font-size:.84rem;font-weight:500;text-decoration:none;white-space:nowrap}
.head-cta{padding:11px 16px;font-size:.92rem}
.burger{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:4px;background:var(--panel);align-items:center;justify-content:center;cursor:pointer;color:var(--ink)}
.burger svg{width:22px;height:22px}
@media (max-width:1180px){
  .nav{display:none}
  .burger{display:inline-flex}
  .nav.open{display:flex;flex-direction:column;position:absolute;top:100%;left:0;right:0;background:var(--panel);border-bottom:1px solid var(--line);padding:8px var(--gr) 18px var(--gl);box-shadow:0 20px 40px -20px rgba(9,18,26,.35)}
  .nav.open a{padding:13px 8px;font-size:1rem;border-bottom:1px solid var(--paper)}
}
@media (max-width:1440px){.head-tel{display:none}}
@media (max-width:680px){.head-cta{display:none}}

/* Hero (accueil) */
.hero{position:relative;background:var(--night);color:#fff;overflow:hidden;padding-block:clamp(40px,6vw,92px)}
.hero-bg{position:absolute;inset:0;background:linear-gradient(90deg,rgba(9,18,26,.95) 0%,rgba(9,18,26,.8) 46%,rgba(9,18,26,.3) 100%),url(images/extension-nuit-2.jpg) 70% center/cover no-repeat}
.hero-grid{position:relative;display:grid;grid-template-columns:minmax(0,1.18fr) minmax(0,.82fr);gap:clamp(28px,4vw,60px);align-items:center}
.hero-copy{display:grid;gap:22px}
.hero .lead{color:#C7D4DD}
.ticks{display:grid;gap:10px}
.ticks li{display:flex;gap:10px;align-items:flex-start;font-weight:500}
.ticks svg{width:20px;height:20px;flex:none;margin-top:2px;color:var(--amber)}
.dark .ticks li,.hero .ticks li{color:var(--night-fg)}
@media (max-width:920px){
  .hero-grid{grid-template-columns:1fr}
  .hero-bg{background:linear-gradient(180deg,rgba(9,18,26,.72) 0%,rgba(9,18,26,.9) 55%,var(--night) 100%),url(images/extension-nuit-2.jpg) 65% top/cover no-repeat}
}

/* Page hero (prestations) */
.phero{position:relative;background-color:var(--night);color:var(--night-fg);padding-block:clamp(36px,5vw,76px);background-image:linear-gradient(rgba(31,54,71,.55) 1px,transparent 1px),linear-gradient(90deg,rgba(31,54,71,.55) 1px,transparent 1px);background-size:44px 44px;background-position:center}
.phero::after{content:"";position:absolute;inset:0;background:radial-gradient(ellipse at 20% 40%,transparent 0%,rgba(9,18,26,.85) 70%);pointer-events:none}
.phero .hero-grid{z-index:1}
.crumb{font-family:var(--mono);font-size:.74rem;letter-spacing:.08em;color:var(--night-muted)}
.crumb a{text-decoration:none;color:var(--night-fg)}
.crumb a:hover{text-decoration:underline}

/* Forms */
.form-card{background:var(--panel);color:var(--ink);border-radius:8px;padding:clamp(20px,3vw,30px);box-shadow:0 32px 64px -32px rgba(0,0,0,.7);position:relative;min-width:0}
.form-card .fc-head{display:grid;gap:6px;margin-bottom:18px}
.form-card .fc-head p{font-size:.92rem;color:var(--muted)}
.fc-badge{justify-self:start;font-family:var(--mono);font-size:.7rem;letter-spacing:.1em;text-transform:uppercase;background:var(--ink);color:#fff;padding:4px 8px;border-radius:3px}
.f-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.f-grid .full{grid-column:1/-1}
@media (max-width:480px){.f-grid{grid-template-columns:1fr}}
.f{display:grid;gap:6px;font-size:.82rem;font-weight:600;min-width:0}
.f i{font-style:normal;font-weight:400;color:var(--muted)}
.f input,.f select,.f textarea{font:400 1rem/1.4 var(--body);padding:12px;border:1px solid var(--line);border-radius:4px;background:#F6F7F7;color:var(--ink);width:100%;min-width:0}
.f textarea{min-height:92px;resize:vertical}
.f input:focus,.f select:focus,.f textarea:focus{border-color:var(--ink);background:#fff;outline:none;box-shadow:0 0 0 3px rgba(244,180,0,.45)}
.f.invalid input,.f.invalid select,.f.invalid textarea{border-color:var(--danger);background:#FFF6F5}
.consent{display:flex;gap:10px;align-items:flex-start;font-size:.8rem;font-weight:400;color:var(--muted);line-height:1.45}
.consent input{width:18px;height:18px;margin:1px 0 0;flex:none;accent-color:var(--ink)}
.consent.invalid{color:var(--danger)}
.f-submit{display:grid;gap:10px;margin-top:4px}
.f-submit .btn{width:100%}
.form-status{font-size:.88rem;line-height:1.45}
.form-status:empty{display:none}
.form-status.err{color:var(--danger)}
.hp{position:absolute!important;left:-9999px;width:1px;height:1px;overflow:hidden}
.form-done{display:grid;gap:10px;padding:8px 0}
.form-done .ok-ico{width:48px;height:48px;border-radius:50%;background:var(--ok);color:#fff;display:grid;place-items:center}
.form-done .ok-ico svg{width:26px;height:26px}
.form-done p{color:var(--muted)}
.small-note{font-family:var(--mono);font-size:.7rem;color:var(--muted);letter-spacing:.04em}

/* Speed strip */
.speed{background:var(--amber);color:var(--amber-ink);padding-block:0}
.speed-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr))}
.speed-item{display:grid;gap:4px;padding:22px 20px;border-left:1px solid rgba(27,21,0,.18)}
.speed-item:first-child{border-left:0;padding-left:0}
.speed-item b{font-family:var(--display);font-stretch:125%;font-weight:800;font-size:clamp(1.3rem,2.2vw,1.7rem);line-height:1}
.speed-item span{font-size:.9rem;line-height:1.35}
@media (max-width:820px){
  .speed-grid{grid-template-columns:1fr 1fr}
  .speed-item{padding:18px 14px}
  .speed-item:nth-child(odd){border-left:0;padding-left:0}
  .speed-item:nth-child(n+3){border-top:1px solid rgba(27,21,0,.18)}
}

/* Services */
.svc-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.svc{display:flex;flex-direction:column;gap:12px;padding:26px;background:var(--panel);border:1px solid var(--line);border-radius:6px;text-decoration:none;transition:border-color .2s,transform .2s;min-width:0}
.svc:hover{border-color:var(--ink);transform:translateY(-2px)}
.svc .ico{width:46px;height:46px;border-radius:4px;background:var(--paper);display:grid;place-items:center}
.svc .ico svg{width:26px;height:26px}
.svc p{color:var(--muted);font-size:.96rem}
.svc .tlink{margin-top:auto}
.svc.feature{grid-column:span 2;background:var(--night);border-color:var(--night);color:var(--night-fg);display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-items:center;gap:26px}
.svc.feature p{color:var(--night-muted)}
.svc.feature .ico{background:var(--amber);color:var(--amber-ink)}
.svc.feature .tag{font-family:var(--mono);font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--amber)}
.svc.feature .fcopy{display:flex;flex-direction:column;gap:12px;min-width:0}
.svc.feature svg.mini{width:100%;height:auto}
@media (max-width:960px){.svc-grid{grid-template-columns:1fr 1fr}}
@media (max-width:620px){.svc-grid{grid-template-columns:1fr}.svc.feature{grid-column:auto;grid-template-columns:1fr}}

/* Split + blueprint */
.split{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:clamp(28px,5vw,64px);align-items:center}
.split.rev{grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr)}
@media (max-width:900px){.split,.split.rev{grid-template-columns:1fr}}
.stack{display:grid;gap:20px;align-content:start;min-width:0}
.blueprint{background-color:var(--night-2);border-radius:8px;padding:clamp(12px,2vw,22px);background-image:linear-gradient(rgba(64,104,132,.22) 1px,transparent 1px),linear-gradient(90deg,rgba(64,104,132,.22) 1px,transparent 1px);background-size:24px 24px;overflow-x:auto}
.blueprint svg{display:block;width:100%;height:auto;min-width:320px}
.bp-cap{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-family:var(--mono);font-size:.7rem;letter-spacing:.1em;text-transform:uppercase;color:var(--night-muted);margin-top:10px}
.checks{display:grid;gap:12px}
.checks li{display:flex;gap:12px;align-items:flex-start}
.checks li::before{content:"";width:18px;height:18px;flex:none;margin-top:3px;background:var(--amber) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%231B1500' stroke-width='3'%3E%3Cpath d='M5 12l5 5 9-10'/%3E%3C/svg%3E") center/13px no-repeat;border-radius:2px}

/* Process */
.process{background:var(--panel);border-block:1px solid var(--line)}
.steps{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:18px;position:relative}
.steps::before{content:"";position:absolute;top:27px;left:28px;right:28px;height:2px;background:repeating-linear-gradient(90deg,var(--ink) 0 8px,transparent 8px 14px)}
.steps::after{content:"";position:absolute;top:22px;left:28px;width:12px;height:12px;border-radius:50%;background:var(--laser);box-shadow:0 0 0 4px rgba(59,240,143,.25),0 0 18px var(--laser);animation:run 7s cubic-bezier(.6,0,.4,1) infinite}
@keyframes run{0%{left:28px;opacity:0}6%{opacity:1}88%{opacity:1}100%{left:calc(100% - 40px);opacity:0}}
.step{position:relative;display:grid;gap:10px;align-content:start;min-width:0}
.node{position:relative;z-index:1;width:56px;height:56px;border-radius:50%;background:var(--panel);border:2px solid var(--ink);display:grid;place-items:center}
.node svg{width:24px;height:24px}
.step:last-child .node{background:var(--amber);border-color:var(--amber);color:var(--amber-ink)}
.step .num{font-family:var(--mono);font-size:.72rem;letter-spacing:.12em;color:var(--muted)}
.step p{font-size:.92rem;color:var(--muted)}
.chip{justify-self:start;font-family:var(--mono);font-size:.7rem;font-weight:500;letter-spacing:.04em;background:var(--ink);color:#fff;padding:4px 8px;border-radius:3px}
.step:last-child .chip{background:var(--amber);color:var(--amber-ink)}
.process-foot{display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between;margin-top:clamp(28px,4vw,44px);padding-top:24px;border-top:1px solid var(--line)}
.process-foot p{font-weight:500;max-width:60ch}
@media (max-width:1000px){
  .steps{grid-template-columns:1fr;gap:0}
  .steps::before{top:28px;bottom:28px;left:27px;right:auto;width:2px;height:auto;background:repeating-linear-gradient(180deg,var(--ink) 0 8px,transparent 8px 14px)}
  .steps::after{display:none}
  .step{grid-template-columns:56px minmax(0,1fr);column-gap:18px;row-gap:6px;padding-bottom:26px}
  .step .node{grid-row:1 / span 4}
  .step:last-child{padding-bottom:0}
}

/* Zone / map */
.zone{background:var(--night);color:var(--night-fg);overflow:hidden}
.zone-grid{display:grid;grid-template-columns:minmax(0,.78fr) minmax(0,1.22fr);gap:clamp(24px,4vw,48px);align-items:center}
@media (max-width:960px){.zone-grid{grid-template-columns:1fr}}
.stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;background:var(--night-line);border:1px solid var(--night-line);border-radius:6px;overflow:hidden}
.stats div{background:var(--night);padding:16px 14px;display:grid;gap:4px}
.stats b{font-family:var(--display);font-stretch:125%;font-weight:800;font-size:1.6rem;line-height:1;color:var(--amber)}
.stats span{font-size:.82rem;color:var(--night-muted);line-height:1.3}
.map3d{position:relative;height:clamp(380px,54vw,640px);border-radius:10px;overflow:hidden;background:radial-gradient(ellipse at 50% 42%,#173550 0%,#0C1A26 55%,var(--night) 100%);border:1px solid var(--night-line);touch-action:pan-y;cursor:grab;user-select:none;-webkit-user-select:none}
.map3d.grab{cursor:grabbing}
.map3d canvas{position:absolute;inset:0;width:100%;height:100%;display:block}
.map-labels{position:absolute;inset:0;pointer-events:none;overflow:hidden}
.map-label{position:absolute;left:0;top:0;font-family:var(--mono);font-size:.68rem;line-height:1;color:var(--night-fg);background:rgba(9,18,26,.78);border:1px solid var(--night-line);padding:4px 6px;border-radius:3px;white-space:nowrap;will-change:transform}
.map-label.be{border-color:rgba(59,240,143,.55)}
.map-label.hub{background:var(--amber);border-color:var(--amber);color:var(--amber-ink);font-weight:600}
@media (max-width:640px){.map-label.minor{display:none}}
.map-label.tiny{display:none}
.map-hud{position:absolute;left:14px;top:12px;right:14px;display:flex;justify-content:space-between;gap:10px;font-family:var(--mono);font-size:.66rem;letter-spacing:.12em;text-transform:uppercase;color:var(--night-muted);pointer-events:none}
.map-legend{position:absolute;left:14px;bottom:12px;right:14px;display:flex;flex-wrap:wrap;gap:6px 16px;font-family:var(--mono);font-size:.68rem;color:var(--night-fg);pointer-events:none}
.map-legend span{display:inline-flex;align-items:center;gap:6px}
.map-legend i{width:10px;height:10px;border-radius:2px;display:inline-block}
.regions{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,210px),1fr));gap:8px}
.regions li{font-size:.92rem;padding:10px 12px;border:1px solid var(--night-line);border-radius:4px;color:var(--night-fg)}
.regions li.be{border-color:rgba(59,240,143,.45)}

/* Gallery */
.gal{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.shot{margin:0;position:relative;border-radius:6px;overflow:hidden;background:#C9CFD1}
.shot img{width:100%;aspect-ratio:4/3;object-fit:cover}
.shot.tall img{object-position:center 62%}
.shot figcaption{position:absolute;left:10px;bottom:10px;right:10px;font-family:var(--mono);font-size:.72rem;line-height:1.35;color:#fff}
.shot figcaption span{background:rgba(9,18,26,.82);padding:4px 7px;border-radius:3px;box-decoration-break:clone;-webkit-box-decoration-break:clone}
@media (max-width:760px){.gal{grid-template-columns:1fr 1fr}}
@media (max-width:440px){.gal{grid-template-columns:1fr}}
.story{display:grid;gap:22px}
.story + .story{margin-top:clamp(48px,7vw,88px)}
.story-head{display:flex;flex-wrap:wrap;gap:12px 24px;align-items:end;justify-content:space-between}
.story-head .stack{max-width:680px}
.corps{display:flex;flex-wrap:wrap;gap:6px}
.corps span{font-family:var(--mono);font-size:.72rem;padding:4px 8px;border:1px solid var(--line);border-radius:3px;background:var(--panel)}

/* Items */
.items{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;background:var(--line);border:1px solid var(--line);border-radius:6px;overflow:hidden}
.item{background:var(--panel);padding:26px;display:grid;gap:8px;align-content:start;min-width:0}
.item .k{font-family:var(--mono);font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.item p{color:var(--muted);font-size:.96rem}
@media (max-width:900px){.items{grid-template-columns:1fr 1fr}}
@media (max-width:600px){.items{grid-template-columns:1fr}}

.visit{background:var(--panel);border:1px solid var(--line);border-radius:6px;padding:clamp(20px,3vw,32px);display:grid;gap:18px}
.visit .checks{grid-template-columns:1fr 1fr;gap:12px 22px}
@media (max-width:560px){.visit .checks{grid-template-columns:1fr}}

/* Nudge banner */
.nudge{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px 24px;background:var(--amber);color:var(--amber-ink);border-radius:6px;padding:22px clamp(18px,3vw,30px)}
.nudge b{display:block;font-family:var(--display);font-stretch:112%;font-weight:800;font-size:clamp(1.1rem,2vw,1.35rem);line-height:1.2}
.nudge span{font-size:.95rem}
.nudge > div{min-width:0;max-width:640px}
.nudge-sec{padding-block:0 clamp(56px,8vw,104px)}

/* FAQ */
.faq{border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{display:flex;justify-content:space-between;gap:16px;padding:18px 0;font-weight:600;font-size:1.04rem;cursor:pointer;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:var(--mono);font-size:1.2rem;line-height:1;color:var(--muted)}
.faq details[open] summary::after{content:"\2013"}
.faq details p{padding:0 0 20px;color:var(--muted);max-width:70ch}

/* CTA */
.cta{background:var(--night-2);color:var(--night-fg)}
.cta-grid{display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);gap:clamp(28px,5vw,64px);align-items:start}
@media (max-width:900px){.cta-grid{grid-template-columns:1fr}}
.contact-lines{display:grid;gap:14px;margin-top:6px}
.cline{display:grid;gap:4px;padding:16px 18px;border:1px solid var(--night-line);border-radius:6px}
.cline .lbl{font-family:var(--mono);font-size:.7rem;letter-spacing:.12em;text-transform:uppercase;color:var(--night-muted)}
.cline .val{display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px}
.cline .val a{font-family:var(--display);font-stretch:112%;font-weight:700;font-size:clamp(1.05rem,2.4vw,1.4rem);text-decoration:none;overflow-wrap:anywhere;user-select:all}
.copy{font-family:var(--mono);font-size:.7rem;background:transparent;border:1px solid var(--night-line);color:var(--night-fg);border-radius:3px;padding:4px 8px;cursor:pointer}
.copy:hover{border-color:var(--night-fg)}

/* Modal */
.modal{position:fixed;inset:0;z-index:100;background:rgba(9,18,26,.74);display:grid;place-items:center;overflow-y:auto;padding:max(16px,env(safe-area-inset-top,0px)) max(16px,env(safe-area-inset-right,0px)) max(16px,env(safe-area-inset-bottom,0px)) max(16px,env(safe-area-inset-left,0px));animation:fade .18s ease}
@keyframes fade{from{opacity:0}to{opacity:1}}
.modal .form-card{width:min(580px,100%)}
.modal-close{position:absolute;top:12px;right:12px;width:40px;height:40px;border-radius:4px;border:1px solid var(--line);background:var(--panel);cursor:pointer;display:grid;place-items:center;color:var(--ink)}
.modal-close svg{width:18px;height:18px}

/* Mobile bar */
.mbar{display:none}
@media (max-width:760px){
  .mbar{display:grid;grid-template-columns:1fr 1.5fr;gap:8px;position:fixed;left:0;right:0;bottom:0;z-index:40;background:var(--panel);border-top:1px solid var(--line);padding:10px max(12px,env(safe-area-inset-right,0px)) calc(10px + env(safe-area-inset-bottom,0px)) max(12px,env(safe-area-inset-left,0px))}
  .mbar .btn{padding:13px 10px;font-size:.95rem}
  body{padding-bottom:calc(70px + env(safe-area-inset-bottom,0px))}
}

/* Footer */
.foot{background:var(--night);color:var(--night-muted);padding-block:56px 30px;font-size:.92rem}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:32px}
@media (max-width:820px){.foot-grid{grid-template-columns:1fr 1fr}.foot-grid > :first-child{grid-column:1/-1}}
@media (max-width:480px){.foot-grid{grid-template-columns:1fr}}
.foot h4{margin:0 0 12px;font-family:var(--mono);font-size:.7rem;font-weight:500;letter-spacing:.14em;text-transform:uppercase;color:var(--amber)}
.foot ul{display:grid;gap:8px}
.foot a{color:var(--night-fg);text-decoration:none}
.foot a:hover{text-decoration:underline}
.foot .brand small{color:var(--night-muted)}
.foot .brand b{color:var(--night-fg)}
.foot-about{display:grid;gap:16px;max-width:420px}
.foot-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px 24px;margin-top:40px;padding-top:20px;border-top:1px solid var(--night-line);font-size:.82rem}

/* Mezzanine 3D (montage animé) */
.mezz3d{position:relative;aspect-ratio:16/10;max-width:100%;overflow:hidden;touch-action:pan-y;user-select:none;-webkit-user-select:none}
.blueprint.mezz3d{padding:0;overflow:hidden}
.blueprint.mezz3d > svg{padding:clamp(12px,2vw,22px)}
.mezz3d canvas{position:absolute;inset:0;width:100%;height:100%;display:block}
.mezz3d.is-3d > svg{display:none}
.mezz3d.is-3d{cursor:grab}
.mezz3d.grab{cursor:grabbing}
.mezz3d.mini{border-radius:6px;cursor:inherit}
.mezz3d.mini canvas{pointer-events:none}
.m3-ui{position:absolute;inset:0;pointer-events:none;display:none}
.mezz3d.is-3d .m3-ui{display:block}
.m3-hud,.m3-foot{position:absolute;left:14px;right:14px;display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap;font-family:var(--mono);font-size:.66rem;letter-spacing:.1em;text-transform:uppercase;color:var(--night-muted)}
.m3-hud{top:12px}
.m3-foot{bottom:12px}
.m3-step{color:var(--night-fg);background:rgba(9,18,26,.7);border:1px solid var(--night-line);padding:4px 8px;border-radius:3px;letter-spacing:.06em}
.m3-step.done{background:var(--amber);border-color:var(--amber);color:var(--amber-ink);font-weight:600}
.m3-replay{pointer-events:auto;font:500 .7rem var(--mono);letter-spacing:.06em;text-transform:uppercase;color:var(--night-fg);background:rgba(9,18,26,.7);border:1px solid var(--night-line);border-radius:3px;padding:7px 10px;cursor:pointer}
.m3-replay:hover{border-color:var(--amber);color:var(--amber)}
.m3-label{position:absolute;left:0;top:0;font-family:var(--mono);font-size:.68rem;line-height:1;white-space:nowrap;color:var(--night-fg);background:rgba(9,18,26,.82);border:1px solid var(--night-line);padding:4px 7px;border-radius:3px;opacity:0;transition:opacity .4s ease;will-change:transform}
.m3-label.on{opacity:1}
.m3-label.dim{border-color:rgba(59,240,143,.6);color:var(--laser)}
.m3-label.warm{border-color:rgba(255,216,102,.6);color:#FFD866}
@media (max-width:560px){.blueprint.mezz3d{aspect-ratio:1/1}.m3-label{font-size:.6rem;padding:3px 5px}.m3-label.dim,.m3-hint,.m3-hud > span:first-child{display:none}.m3-hud{justify-content:flex-end}}