/* Styles simples et responsives */
:root{
  --bg:#f7f9fb;
  --card:#ffffff;
  --accent:#0b6fb1;
  --text:#1b2430;
  --muted:#55626a;
  --max-width:1000px;
}
*{box-sizing:border-box}
html,body{height:100%;margin:0;font-family:Inter, Roboto, Arial, sans-serif;background:var(--bg);color:var(--text)}
.container{max-width:var(--max-width);margin:0 auto;padding:1rem}
.site-header{background:linear-gradient(90deg,#0b6fb1 0%,#0f90d1 100%);color:#fff;padding:1rem 0}
.brand{margin:0;font-size:1.2rem}
.main-nav{display:flex;gap:.5rem;flex-wrap:wrap;margin-top:.5rem}
.main-nav .tab-btn{background:transparent;border:1px solid rgba(255,255,255,.25);color:#fff;padding:.45rem .7rem;border-radius:6px;cursor:pointer}
.main-nav .tab-btn[aria-current="true"], .main-nav .tab-btn:hover{background:rgba(255,255,255,.12)}
.tab-panel{background:var(--card);padding:1.25rem;margin:1rem 0;border-radius:8px;box-shadow:0 2px 6px rgba(16,24,40,.05)}
.services-list{list-style:none;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1rem}
.services-list li{background:var(--bg);padding:.75rem;border-radius:6px}
.clients-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:1rem;margin-top:1rem}
.client-card{background:var(--bg);padding:1rem;border-radius:8px;display:flex;align-items:center;gap:.75rem}
.client-card .logo{width:48px;height:48px;border-radius:8px;background:linear-gradient(135deg,#e6f3fb,#d3eefb);display:flex;align-items:center;justify-content:center;font-weight:700;color:var(--accent)}
.client-card .name{font-weight:600}
.contact-form{display:flex;flex-direction:column;gap:.5rem;max-width:600px}
.contact-form input, .contact-form textarea{padding:.6rem;border:1px solid #d6dde3;border-radius:6px}
.form-actions{margin-top:.5rem}
.form-actions button{background:var(--accent);color:#fff;border:0;padding:.6rem .9rem;border-radius:6px;cursor:pointer}
.form-status{margin-top:.5rem;color:var(--muted)}
.site-footer{padding:1rem 0;text-align:center;color:var(--muted);font-size:.9rem}
.note{font-size:.9rem;color:var(--muted)}
@media (max-width:600px){.main-nav{gap:.35rem}.brand{font-size:1rem}.container{padding:.75rem}}