:not(:defined) > * { display: none; }

html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
}

model-viewer {
  width: 100%;
  height: 100%;
  background: white !important;
}

/* Yükleme çubuğu */
.progress-bar {
  display: block;
  width: 33%;
  max-height: 2%;
  position: absolute;
  left: 50%; top: 50%;
  transform: translate3d(-50%, -50%, 0);
  border-radius: 25px;
  box-shadow: 0 3px 10px 3px rgba(0,0,0,.5), 0 0 5px 1px rgba(0,0,0,.6);
  border: 1px solid rgba(255,255,255,.9);
  background-color: rgba(0,0,0,.5);
}
.progress-bar.hide { visibility: hidden; transition: visibility 0.3s; }
.update-bar {
  background-color: rgba(255,255,255,.9);
  width: 0%; height: 100%;
  border-radius: 25px;
  float: left;
  transition: width 0.3s;
}

/* ── BUTON BARI ── */
#button-bar {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 10px;
  z-index: 10;
}

/* Ortak buton stili */
#ar-button,
#product-button {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 48px;
  padding: 0 20px;
  background-color: #fff;
  border: 1px solid #DADCE0;
  border-radius: 24px;
  font-family: Roboto, Helvetica Neue, sans-serif;
  font-size: 14px;
  color: #000;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color 0.15s;
}

/* AR ikonlu buton */
#ar-button {
  background-image: url(ar.png);
  background-repeat: no-repeat;
  background-size: 20px 20px;
  background-position: 16px 50%;
  padding-left: 44px;
}

#ar-button:active,
#product-button:active { background-color: #E8EAED; }

#ar-button:focus,
#product-button:focus { outline: none; }

#ar-button:focus-visible,
#product-button:focus-visible { outline: 1px solid #4285f4; }

/* Mobilde ikon küçülmesini engelle, bar sığmıyorsa wrap yap */
@media (max-width: 400px) {
  #button-bar { gap: 8px; }
  #ar-button,
  #product-button { font-size: 13px; padding: 0 14px; height: 44px; }
  #ar-button { padding-left: 38px; background-position: 12px 50%; }
}

/* AR el ikonu */
@keyframes circle {
  from { transform: translateX(-50%) rotate(0deg)   translateX(50px) rotate(0deg); }
  to   { transform: translateX(-50%) rotate(360deg) translateX(50px) rotate(-360deg); }
}
@keyframes elongate {
  from { transform: translateX(100px); }
  to   { transform: translateX(-100px); }
}
model-viewer > #ar-prompt {
  position: absolute;
  left: 50%;
  bottom: 80px;
  animation: elongate 2s infinite ease-in-out alternate;
  display: none;
}
model-viewer[ar-status="session-started"] > #ar-prompt { display: block; }
model-viewer > #ar-prompt > img { animation: circle 4s linear infinite; }