/* shaderlm — vitrine multi-pages
   Aucune ressource externe (polices système) => CSP self-only propre. */

:root{
  --bg:        #0b0710;
  --bg-2:      #140a1f;
  --violet:    #9d5cff;
  --orange:    #ff8a3d;
  --ink:       #e9def7;
  --ink-mut:   #9a86bd;
  --ink-faint: #5b4d78;
  --line:      rgba(157,92,255,.16);
  --card:      rgba(157,92,255,.045);
  --pad:       clamp(1.25rem, 5vw, 3rem);
  --serif:     "Iowan Old Style","Palatino Linotype",Palatino,"Book Antiqua",Georgia,serif;
  --mono:      ui-monospace,"SF Mono","Cascadia Mono",Menlo,Consolas,monospace;
}

*{box-sizing:border-box}
html{ -webkit-text-size-adjust:100%; text-size-adjust:100%; scroll-behavior:smooth; }
body{
  margin:0; min-height:100dvh;
  background:var(--bg); color:var(--ink);
  font-family:var(--serif);
  -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
  overflow-x:hidden;
}

/* Fond ambiant (signature) — en pseudo-éléments, présents sur toutes les pages */
body::before{
  content:""; position:fixed; inset:-20%; z-index:-2;
  background:
    radial-gradient(42% 42% at 28% 26%, rgba(157,92,255,.30), transparent 70%),
    radial-gradient(38% 38% at 74% 78%, rgba(255,138,61,.22), transparent 72%),
    radial-gradient(85% 85% at 50% 45%, var(--bg-2), var(--bg) 80%);
  animation:drift 24s ease-in-out infinite alternate;
}
body::after{
  content:""; position:fixed; inset:0; z-index:-1; opacity:.045; pointer-events:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
@keyframes drift{
  from{ transform:translate3d(-2%,-1%,0) scale(1.02); }
  to  { transform:translate3d(3%,2%,0)  scale(1.07); }
}

/* Shell ---------------------------------------------------------------- */
.site{ display:flex; flex-direction:column; min-height:100dvh; }

/* Navigation ----------------------------------------------------------- */
.nav{
  position:sticky; top:0; z-index:10;
  display:flex; align-items:center; justify-content:space-between;
  flex-wrap:wrap; gap:.6rem 1.2rem;
  padding:.9rem var(--pad);
  background:rgba(11,7,16,.55);
  backdrop-filter:blur(9px); -webkit-backdrop-filter:blur(9px);
  border-bottom:1px solid var(--line);
}
.brand{
  font-family:var(--serif); font-weight:600; font-size:1.35rem; letter-spacing:-.01em;
  text-decoration:none; line-height:1;
  background:linear-gradient(105deg,var(--violet),var(--orange));
  -webkit-background-clip:text; background-clip:text; -webkit-text-fill-color:transparent; color:transparent;
}
.nav-links{ display:flex; flex-wrap:wrap; gap:.35rem 1.15rem; }
.nav-links a{
  font-family:var(--mono); font-size:.74rem; letter-spacing:.14em; text-transform:lowercase;
  color:var(--ink-mut); text-decoration:none; padding:.35rem 0;
  border-bottom:1px solid transparent; transition:color .2s, border-color .2s;
}
.nav-links a:hover{ color:var(--ink); }
.nav-links a.active{ color:var(--orange); border-bottom-color:var(--orange); }

/* Contenu -------------------------------------------------------------- */
.page{
  flex:1 0 auto; width:100%; max-width:58rem; margin-inline:auto;
  padding:clamp(2.5rem,6vw,4.5rem) var(--pad) clamp(3rem,7vw,5.5rem);
  animation:rise .8s cubic-bezier(.2,.7,.2,1) both;
}
.page--hero{
  display:flex; flex-direction:column; align-items:center; justify-content:center;
  text-align:center; min-height:calc(100dvh - 8rem);
}
@keyframes rise{ from{opacity:0; transform:translateY(12px)} to{opacity:1; transform:none} }

.eyebrow{
  margin:0 0 1.2rem; font-family:var(--mono);
  font-size:.72rem; letter-spacing:.34em; text-transform:lowercase; color:var(--ink-faint);
}

.display{
  margin:0; font-size:clamp(3rem,13vw,7rem); line-height:.95; font-weight:600;
  letter-spacing:-.02em; overflow-wrap:break-word;
  background:linear-gradient(105deg,var(--violet) 8%,#d7a2ff 42%,var(--orange) 94%);
  -webkit-background-clip:text; background-clip:text; -webkit-text-fill-color:transparent; color:transparent;
}
.page-title{
  margin:0 0 1.6rem; font-size:clamp(2rem,7vw,3.2rem); line-height:1.05; font-weight:600;
  letter-spacing:-.015em;
}
.page-title::after{
  content:""; display:block; width:2.5rem; height:2px; margin-top:1rem;
  background:linear-gradient(90deg,var(--violet),var(--orange));
}

.lead{ margin:1.3rem auto 0; max-width:34rem; font-size:clamp(1.05rem,3.4vw,1.35rem); line-height:1.45; color:var(--ink); }
.hero-sub{ max-width:34rem; margin-top:1rem; }
p{ font-size:clamp(1rem,3vw,1.06rem); line-height:1.7; color:var(--ink-mut); max-width:38rem; }
.page p + p{ margin-top:1.1rem; }
strong{ color:var(--ink); font-weight:600; }

/* Boutons / liens accent */
.btn{
  display:inline-block; margin-top:2.2rem; font-family:var(--mono);
  font-size:.8rem; letter-spacing:.1em; text-decoration:none; color:var(--ink);
  padding:.7rem 1.2rem; border:1px solid var(--line); border-radius:999px;
  transition:border-color .2s, color .2s, background .2s;
}
.btn:hover{ color:var(--orange); border-color:var(--orange); background:rgba(255,138,61,.06); }

/* Tags */
.tags{ list-style:none; margin:2.2rem 0 0; padding:0; display:flex; flex-wrap:wrap; gap:.5rem; }
.page--hero .tags{ justify-content:center; }
.tags li{
  font-family:var(--mono); font-size:.72rem; letter-spacing:.12em; color:var(--ink-mut);
  padding:.42rem .75rem; border-radius:999px; border:1px solid var(--line); background:var(--card);
}

/* Grille expertise */
.grid{ margin-top:2.6rem; display:grid; grid-template-columns:repeat(auto-fit,minmax(15rem,1fr)); gap:1rem; }
.item{ padding:1.4rem 1.5rem; border:1px solid var(--line); border-radius:14px; background:var(--card); }
.item .k{ font-family:var(--mono); font-size:.68rem; letter-spacing:.16em; text-transform:uppercase; color:var(--ink-faint); }
.item h3{ margin:.5rem 0 .6rem; font-size:1.25rem; font-weight:600; color:var(--ink); }
.item p{ margin:0; font-size:.98rem; }

/* Contact */
.mail{
  display:inline-block; margin-top:1.6rem; font-family:var(--serif);
  font-size:clamp(1.3rem,5vw,2rem); text-decoration:none; color:var(--ink);
  border-bottom:2px solid var(--orange); padding-bottom:.15rem;
  transition:color .2s;
}
.mail:hover{ color:var(--orange); }

/* Footer --------------------------------------------------------------- */
.foot{
  border-top:1px solid var(--line); padding:1.6rem var(--pad);
  display:flex; flex-wrap:wrap; gap:.4rem 1rem; justify-content:space-between;
  font-family:var(--mono); font-size:.7rem; letter-spacing:.14em; color:var(--ink-faint);
}
.foot a{ color:var(--ink-faint); text-decoration:none; }
.foot a:hover{ color:var(--ink-mut); }

/* Accessibilité / responsive ------------------------------------------ */
a:focus-visible,:focus-visible{ outline:2px solid var(--violet); outline-offset:3px; border-radius:3px; }
@media (max-width:520px){
  .nav{ justify-content:center; }
  .eyebrow{ letter-spacing:.26em; }
}
@media (prefers-reduced-motion:reduce){
  html{ scroll-behavior:auto; }
  body::before, .page{ animation:none; }
}