:root{
  --petrol:#0e6c77;
  --petrol-70: rgba(14,108,119,.7);
  --aqua:#87d6d6;
  --carrot:#e9772b;
  --offwhite:#f2e9da;
  --ink:#0a0a0a;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color:var(--offwhite);
  background: url('assets/bg.png') center/cover no-repeat fixed;
  overflow:hidden;
}

/* CANVAS bubbles (v6 style) */
#bubbles{
  position:fixed;
  inset:0;
  width:100%;
  height:100%;
  z-index:0; /* sopra allo sfondo ma sotto ai contenuti */
  pointer-events:none;
}

/* Header layout */
header{
  position:fixed;
  top:0; left:0; right:0;
  display:grid;
  grid-template-columns: 1fr auto 1fr;
  align-items:center;
  padding:14px 18px;
  z-index:2;
}
.logo-small{
  height:56px;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,.45));
  justify-self:start;
}
.top-nav{
  justify-self:center;
  display:flex;
  gap:12px;
}
.top-nav .btn{ min-width:170px; }

/* Bottom buttons row */
.bottom-bar{
  position:fixed;
  left:50%;
  transform:translateX(-50%);
  bottom:64px;
  z-index:2;
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  justify-content:center;
}

/* Buttons (retro petrol/aqua/carrot) */
.btn{
  --bg: rgba(0,0,0,.28);
  --bd: var(--aqua);
  --txt: var(--offwhite);
  padding:12px 22px;
  border-radius:999px;
  border:2px solid var(--bd);
  color:var(--txt);
  text-decoration:none;
  letter-spacing:.4px;
  backdrop-filter: blur(2px);
  background:var(--bg);
  box-shadow:0 0 0 0 rgba(233,119,43,0);
  transition: transform .22s ease, box-shadow .22s ease, background .22s ease, color .22s ease, border-color .22s ease;
}
.btn:hover{
  transform: translateY(-2px) scale(1.04);
  border-color: var(--carrot);
  color: #fff;
  background: linear-gradient(180deg, rgba(233,119,43,.18), rgba(14,108,119,.20));
  box-shadow: 0 0 14px rgba(233,119,43,.55), 0 0 28px rgba(135,214,214,.25);
}

/* Center big logo with glow "breathing" */
.center-wrap{
  position:fixed;
  inset:0;
  display:grid;
  place-items:center;
  z-index:1;
}
.logo-big{
  width:min(56vmin, 520px);
  max-width:85vw;
  animation: float 4s ease-in-out infinite;
  filter:
    drop-shadow(0 12px 28px rgba(0,0,0,.55))
    drop-shadow(0 0 16px rgba(233,119,43,.35))
    drop-shadow(0 0 36px rgba(135,214,214,.25));
}
@keyframes float{
  0%,100%{ transform: translateY(0) scale(1) }
  50%{ transform: translateY(-8px) scale(1.03) }
}

/* Footer tiny copyright */
.footer{
  position:fixed;
  right:10px;
  bottom:8px;
  font-size:11px;
  color:rgba(255,255,255,.38);
  z-index:2;
  user-select:none;
}

/* Card (used in donazioni & regolamento) */
.card{
  width:min(820px, 92vw);
  margin:112px auto 64px;
  background: linear-gradient(180deg, rgba(14,108,119,.24), rgba(14,108,119,.18));
  border:1px solid rgba(135,214,214,.45);
  border-radius:24px;
  box-shadow: 0 10px 40px rgba(0,0,0,.45), 0 0 24px rgba(233,119,43,.15);
  backdrop-filter: blur(6px);
  padding:28px 24px;
  color:#fff;
}
.card h1{
  font-size:clamp(22px, 3.4vw, 36px);
  color:var(--offwhite);
  text-align:center;
  margin:0 0 18px;
  text-shadow: 0 2px 12px rgba(0,0,0,.25);
}
.card p, .card li{
  line-height:1.6;
  color:#f7f2e6;
}
.card .qr{
  display:block;
  width:min(340px, 80vw);
  margin:12px auto 8px;
  border-radius:18px;
  background:#fff;
  padding:10px;
  box-shadow: 0 10px 30px rgba(0,0,0,.35);
}
.card .sub{
  text-align:center;
  color:#e9e0cf;
  opacity:.9;
  margin-top:6px;
}

/* Generic page header (inner pages) */
.inner-header{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:10px;
  position:fixed;
  top:0; left:0; right:0;
  padding:14px 18px;
  z-index:2;
}
.inner-nav{ justify-self:center; display:flex; gap:10px; }

/* Responsive tweaks */
@media (max-width: 600px){
  .logo-small{ height:48px }
  .bottom-bar{ bottom:42px; gap:10px }
  .btn{ padding:10px 18px }
}