/* ============================================================
   CCS Numériques — site vitrine
   Recréé depuis le prototype Claude Design (dark, accent indigo)
   ============================================================ */

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:#16181D;color:#f5f7fa;font-family:'Century Gothic','Futura',ui-sans-serif,system-ui,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden}
::selection{background:#0091D5;color:#fff}
::-webkit-scrollbar{width:10px}
::-webkit-scrollbar-track{background:#16181D}
::-webkit-scrollbar-thumb{background:#23252e;border-radius:8px}

@keyframes spin-slow{to{transform:rotate(360deg)}}
@keyframes scrollcue{0%{transform:translateY(0);opacity:.7}50%{transform:translateY(7px);opacity:.2}100%{transform:translateY(0);opacity:.7}}
[data-reveal]{opacity:1}
@media(prefers-reduced-motion:reduce){[data-reveal]{opacity:1!important;transform:none!important;animation:none!important}}

input,textarea,select,button{font-family:inherit}
textarea{resize:vertical}
::placeholder{color:rgba(255,255,255,.32)}

/* ---------- Interactions (ex style-hover / style-focus) ---------- */
.nav-link{transition:color .15s}
.nav-link:hover{color:#fff}

.btn-primary{transition:background .15s,transform .15s}
.btn-primary:hover{background:var(--ac2)}
.btn-primary.lift:hover{background:var(--ac2);transform:translateY(-2px)}

.btn-ghost{transition:background .15s}
.btn-ghost:hover{background:rgba(255,255,255,.13)}

.bento-card{transition:border-color .25s,transform .25s}
.bento-card:hover{border-color:var(--ac);transform:translateY(-3px)}

.link-arrow{transition:gap .2s}
.link-arrow:hover{gap:14px}

.foot-link{transition:color .15s}
.foot-link:hover{color:#fff}

.info-mail{transition:color .15s}
.info-mail:hover{color:var(--ac)}

.field{transition:border-color .15s,box-shadow .15s}
.field:focus{border-color:var(--ac);box-shadow:0 0 0 3px rgba(0,145,213,.25)}

/* ---------- Bouton retour en haut ---------- */
.to-top{position:fixed;right:22px;bottom:22px;z-index:200;width:46px;height:46px;border-radius:50%;border:1px solid rgba(255,255,255,.14);background:#0091D5;color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:0 8px 24px rgba(0,0,0,.35);opacity:0;transform:translateY(12px) scale(.92);pointer-events:none;transition:opacity .25s,transform .25s,background .15s}
.to-top.show{opacity:1;transform:none;pointer-events:auto}
.to-top:hover{background:#007AB3}
@media(max-width:640px){.to-top{right:16px;bottom:16px;width:42px;height:42px}}

/* ---------- Indice de défilement du hero ---------- */
.scroll-cue span{transition:color .2s}
.scroll-cue:hover span{color:#fff}

/* ---------- Réseau de technologies (canvas) ---------- */
.tech-canvas-wrap{position:relative;width:100%;height:clamp(440px,58vw,640px)}
.tech-canvas-wrap canvas{position:absolute;inset:0;width:100%;height:100%;display:block;cursor:crosshair}
/* Repli statique si l'utilisateur préfère peu de mouvement : chips centrées */
.tech-fallback{display:none;flex-wrap:wrap;gap:12px;justify-content:center;padding:0 24px;max-width:1000px;margin:0 auto}
.tech-chip{display:inline-flex;align-items:center;gap:9px;padding:10px 18px;border:1px solid rgba(255,255,255,.1);border-radius:999px;background:rgba(255,255,255,.03);color:rgba(255,255,255,.78);font-size:14px;font-weight:500}
.tech-chip::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--ac);opacity:.7;flex:0 0 auto}
@media(prefers-reduced-motion:reduce){.tech-canvas-wrap{display:none}.tech-fallback{display:flex}}