:root{--bg:#0b1220;--fg:#e5e7eb;--muted:#94a3b8;--card:#111827;--accent:#22c55e;--accent-2:#10b981;--ghost:#1f2937;}
*{box-sizing:border-box}
html,body{margin:0;padding:0;height:100%;background:var(--bg);color:var(--fg);font-family:system-ui,Segoe UI,Roboto,Ubuntu,Inter,Arial}
a{color:var(--fg);text-decoration:none}
.app-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid #111;gap:10px}
.brand{display:flex;gap:10px;align-items:center}
.brand img{width:28px;height:28px;border-radius:8px}
.app-header h1{margin:0;font-size:18px}
.right-controls{display:flex;align-items:center;gap:8px}
.lang-switch{display:flex;gap:6px;background:var(--ghost);padding:4px;border-radius:12px}
.lang{border:none;background:transparent;color:var(--fg);padding:6px 10px;border-radius:8px;cursor:pointer}
.lang.active{background:#0f172a}
.app-footer{padding:14px 16px;border-top:1px solid #111;color:var(--muted);text-align:center}
.lead{color:var(--muted);margin:12px 0 20px}
.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.card{border:1px solid #1f2937;background:var(--card);border-radius:14px;padding:16px;text-align:left;cursor:pointer;transition:.15s transform}
.card:hover{transform:translateY(-2px)}
.card .emoji{font-size:22px;margin-bottom:10px}
.card .title{font-weight:700}
.card .desc{font-size:12px;color:var(--muted)}
.view{display:none;padding:16px 20px;max-width:900px;margin:0 auto}
.view.active{display:block}
h2{margin-top:4px}
.btn{display:inline-block;background:var(--accent);border:none;color:#001b0a;padding:10px 14px;border-radius:12px;font-weight:700;cursor:pointer}
.btn.ghost{background:var(--ghost);color:var(--fg)}
.back{margin:0 0 10px 0;background:var(--ghost);color:var(--fg);border:none;border-radius:10px;padding:8px 12px;cursor:pointer}
.field{margin:14px 0}
.field label{display:block;margin-bottom:6px;color:var(--muted)}
select, input[type="number"], input[type="text"], textarea{width:100%;padding:10px;border-radius:10px;border:1px solid #1f2937;background:#0f172a;color:var(--fg)}
.result{margin:12px 0;padding:12px;border:1px dashed #263249;border-radius:12px;background:#0f172a}
.box{padding:12px;border:1px solid #1f2937;border-radius:12px;background:#0f172a;margin:12px 0}
.checklist{list-style:none;padding:0;margin:8px 0}
.checklist li{margin:8px 0}
.checklist input{transform:scale(1.2);margin-right:8px}
.cta{margin-top:14px}
.hint{color:var(--muted);font-size:13px}
.wa-float{position:fixed;right:16px;bottom:16px;width:56px;height:56px;border-radius:50%;background:linear-gradient(160deg,var(--accent),var(--accent-2));display:flex;align-items:center;justify-content:center;font-size:24px;color:#012;box-shadow:0 10px 25px rgba(0,0,0,.35);}
.list-item{padding:10px;border:1px solid #1f2937;border-radius:12px;margin:8px 0;background:#0f172a}
.list-item h4{margin:0 0 6px 0}
@media (min-width:900px){ .grid{grid-template-columns:repeat(5,1fr)} }
/* ======= HEADER UNIFICADO GAMMA × LASSERLAB ======= */
.site-header {
  display:flex;
  justify-content:center;
  align-items:center;
  background:#0b1220;
  border-bottom:1px solid #1f2937;
  padding:10px 16px;
  box-shadow:0 2px 10px rgba(0,0,0,.25);
  position:relative;
  z-index:10;
}
.brand {
  text-decoration:none;
  color:var(--text);
}
.brand-logos {
  display:flex;
  align-items:center;
  gap:12px;
}
.brand-logo {
  height:38px;
  width:auto;
  display:block;
  object-fit:contain;
  filter:brightness(1.1);
}
.brand-logo.gamma {
  height:24px; /* aumenta el tamaño del logo */
  filter: drop-shadow(0 0 4px white) brightness(1.1);
}

.brand-logo.lasser {
  height:32px;
}
.brand-divider {
  font-size:22px;
  font-weight:300;
  color:var(--accent);
  margin:0 6px;
}
@media (max-width:480px){
  .site-header { padding:8px; }
  .brand-logo.gamma { height:48px; filter: drop-shadow(0 0 3px white) brightness(1.1); }
  .brand-logo.lasser { height:28px; }
  .brand-divider { font-size:18px; }
}