:root{--bg:#0b1020;--panel:rgba(255,255,255,.08);--panel2:rgba(255,255,255,.12);--text:rgba(255,255,255,.92);--muted:rgba(255,255,255,.7);--accent:#58d1ff;--shadow:0 12px 40px rgba(0,0,0,.35)}
*{box-sizing:border-box}html,body{height:100%;margin:0}
body{font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial; background:radial-gradient(1200px 700px at 50% -10%, rgba(88,209,255,.20), transparent 60%),radial-gradient(800px 600px at 90% 10%, rgba(255,77,109,.12), transparent 55%),var(--bg);color:var(--text);overflow:hidden}
.topbar{position:fixed;top:env(safe-area-inset-top);left:env(safe-area-inset-left);right:env(safe-area-inset-right);display:flex;gap:12px;align-items:center;justify-content:space-between;padding:10px 12px;z-index:10;backdrop-filter:blur(10px);background:linear-gradient(to bottom, rgba(0,0,0,.55), rgba(0,0,0,.12))}
.brand{display:flex;align-items:center;gap:10px;font-weight:650}.brand .dot{width:10px;height:10px;border-radius:999px;background:var(--accent);box-shadow:0 0 0 4px rgba(88,209,255,.12)}
.controls{display:flex;gap:10px;align-items:center;flex-wrap:wrap;justify-content:flex-end}
.btn{appearance:none;border:1px solid rgba(255,255,255,.18);background:var(--panel);color:var(--text);padding:8px 12px;border-radius:12px;cursor:pointer;box-shadow:0 8px 24px rgba(0,0,0,.18);transition:transform .06s ease, background .12s ease, opacity .12s ease}
.btn:hover{background:var(--panel2)}.btn:active{transform:translateY(1px)}.btn.primary{border-color:rgba(88,209,255,.35)}.btn.primary:hover{background:rgba(88,209,255,.16)}.btn:disabled{opacity:.45;cursor:not-allowed}
.toggle{display:inline-flex;gap:8px;align-items:center;padding:8px 10px;border-radius:12px;border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.06);user-select:none}
.toggle input{transform:translateY(1px)}.toggle span{font-size:13px;color:var(--muted)}
.stage{position:fixed;inset:0;padding-top:calc(54px + env(safe-area-inset-top))}
#video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:0;pointer-events:none}
#canvas{position:absolute;inset:0;width:100%;height:100%}
.hint{position:absolute;inset:0;display:grid;place-items:center;padding:18px}
.hintCard{max-width:560px;width:100%;border-radius:18px;padding:16px 16px 14px;background:rgba(0,0,0,.45);border:1px solid rgba(255,255,255,.14);box-shadow:var(--shadow)}
.hintCard h1{margin:0 0 6px;font-size:18px;letter-spacing:.2px}
.hintCard p{margin:8px 0;color:var(--muted);line-height:1.35}
.hintCard .small{font-size:12.5px;opacity:.9}
.hintCard code{background:rgba(255,255,255,.10);padding:1px 6px;border-radius:8px;border:1px solid rgba(255,255,255,.12)}
.footer{position:fixed;bottom:env(safe-area-inset-bottom);left:env(safe-area-inset-left);right:env(safe-area-inset-right);padding:10px 12px;z-index:10;display:flex;justify-content:center;pointer-events:none}
#status{pointer-events:none;font-size:13px;color:rgba(255,255,255,.75);background:rgba(0,0,0,.35);border:1px solid rgba(255,255,255,.12);padding:6px 10px;border-radius:999px;backdrop-filter:blur(10px)}


.uiToggle{
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 9999;
  width: 34px;
  height: 34px;
  border-radius: 999px;
  border: 0;
  cursor: pointer;
  opacity: .35;            
  transition: opacity .2s ease, transform .2s ease;
}
.uiToggle:hover{ opacity: .95; transform: scale(1.05); }
.uiToggle:active{ transform: scale(.98); }


#topbar{
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 9998;
  transform: translateY(-110%);
  transition: transform .25s ease;
}


body.ui-open #topbar{
  transform: translateY(0);
}


/*
body.ui-open .stage{
  padding-top: 70px;
}
*/


.doorbellBtn{
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 9999;

  width: 72px;
  height: 72px;
  border-radius: 999px;
  border: 0;

  cursor: pointer;
  font-size: 28px;
  line-height: 1;

  /* “visdeurbel vibe” */
  box-shadow: 0 12px 30px rgba(0,0,0,.28);
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);

  transition: transform .12s ease, opacity .2s ease;
  opacity: .95;
}

.doorbellBtn:hover{ transform: translateY(-2px); }
.doorbellBtn:active{ transform: translateY(1px) scale(.98); }


@keyframes bellShake {
  0%   { transform: rotate(0deg); }
  20%  { transform: rotate(-12deg); }
  40%  { transform: rotate(10deg); }
  60%  { transform: rotate(-8deg); }
  80%  { transform: rotate(6deg); }
  100% { transform: rotate(0deg); }
}

.doorbellBtn.shake {
  animation: bellShake 0.45s ease;
}