/* ==========================================================================
   AR Kartvizit — gorunum dosyasi
   Buradaki her sey sadece "nasil gorunecegi" ile ilgili. Modelin davranisi
   uygulama.js icinde, kalibrasyon degerleri ayarlar.json icinde.
   ========================================================================== */

/* --- Renkler tek yerden yonetiliyor: burayi degistirince her yer degisir --- */
:root {
  --zemin:        #0b0f1a;
  --zemin-ust:    #141b2e;
  --parlama:      #3b82f6;
  --vurgu:        #60a5fa;
  --yazi:         #f1f5f9;
  --yazi-soluk:   #94a3b8;
  --kenar:        rgba(255, 255, 255, 0.10);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: var(--zemin);
  color: var(--yazi);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  /* Sayfanin parmakla asagi cekilip "lastik" gibi zipllamasini engeller */
  overscroll-behavior: none;
}

/* --- Ana yerlesim: ust yazi / model / alt yazi seklinde 3 kat --- */
.sahne {
  min-height: 100dvh;              /* dvh: mobil tarayici cubugu kayinca bozulmaz */
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 4px;

  /* iPhone centigi ve alt cubugunun altina yazi kacmasin diye guvenli alan */
  padding:
    calc(env(safe-area-inset-top) + 22px)
    calc(env(safe-area-inset-right) + 20px)
    calc(env(safe-area-inset-bottom) + 18px)
    calc(env(safe-area-inset-left) + 20px);

  /* Ortada yumusak bir isik hüzmesi + ustten alta koyulasan zemin */
  background:
    radial-gradient(90% 55% at 50% 42%, rgba(59, 130, 246, 0.20), transparent 70%),
    linear-gradient(180deg, var(--zemin-ust) 0%, var(--zemin) 55%);
}

/* --------------------------- UST YAZI --------------------------- */
.ust { text-align: center; }

.etiket {
  margin: 0 0 10px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.22em;
  color: var(--vurgu);
  opacity: 0.9;
}

.baslik {
  margin: 0;
  font-size: clamp(28px, 8vw, 44px);   /* ekran kucuklukce yazi da kuculur */
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.altbaslik {
  margin: 8px 0 0;
  font-size: clamp(13px, 3.6vw, 16px);
  color: var(--yazi-soluk);
}

/* --------------------------- 3B MODEL --------------------------- */
model-viewer {
  width: 100%;
  height: 100%;
  min-height: 300px;
  background: transparent;
  --poster-color: transparent;
  /* Modelin altina hafif bir zemin golgesi hissi */
  filter: drop-shadow(0 24px 40px rgba(0, 0, 0, 0.55));
}

/* Yuklenme cubugu */
.yukleniyor {
  position: absolute;
  left: 50%;
  bottom: 18%;
  transform: translateX(-50%);
  width: 140px;
  height: 3px;
  border-radius: 99px;
  background: rgba(255, 255, 255, 0.12);
  overflow: hidden;
  transition: opacity 0.3s;
}
.yukleniyor-ic {
  width: 100%;
  height: 100%;
  border-radius: 99px;
  background: var(--vurgu);
  transform-origin: left;
  transform: scaleX(0);            /* uygulama.js bu degeri buyutur */
  transition: transform 0.2s;
}
/* Yukleme bitince cubuk kaybolur */
.yukleniyor[hidden],
.yukleniyor.bitti { opacity: 0; pointer-events: none; }

/* --------------------------- AR BUTONU --------------------------- */
.ar-btn {
  position: absolute;
  left: 50%;
  bottom: 16px;
  transform: translateX(-50%);

  display: inline-flex;
  align-items: center;
  gap: 9px;

  /* Bu satir sart: buton "left: 50%" ile konumlandigi icin tarayici ona
     kapsayicinin sadece yarisi kadar genislik veriyor ve yazi iki satira
     kiriliyordu. nowrap tek satirda kalmasini garantiliyor. */
  white-space: nowrap;

  padding: 14px 24px;
  border: 0;
  border-radius: 99px;

  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  color: #06101f;
  background: linear-gradient(180deg, #ffffff 0%, #dbeafe 100%);
  box-shadow:
    0 8px 22px rgba(59, 130, 246, 0.35),
    0 2px 6px rgba(0, 0, 0, 0.35);

  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: transform 0.15s ease, box-shadow 0.15s ease;

  /* Dikkat cekmesi icin cok hafif bir nabiz efekti */
  animation: nabiz 2.6s ease-in-out infinite;
}
.ar-btn:active {
  transform: translateX(-50%) scale(0.96);
  animation: none;
}
.ar-btn svg {
  width: 19px;
  height: 19px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

@keyframes nabiz {
  0%, 100% { box-shadow: 0 8px 22px rgba(59,130,246,0.35), 0 2px 6px rgba(0,0,0,0.35); }
  50%      { box-shadow: 0 8px 30px rgba(59,130,246,0.62), 0 2px 6px rgba(0,0,0,0.35); }
}

/* Hareket azaltma tercihini acmis kullanicilar icin animasyonlari kapat */
@media (prefers-reduced-motion: reduce) {
  .ar-btn { animation: none; }
}

/* --------------------------- ALT YAZILAR --------------------------- */
.alt { text-align: center; min-height: 20px; }

.ipucu {
  margin: 0;
  font-size: 12.5px;
  color: var(--yazi-soluk);
  opacity: 0.8;
}

.ar-yok {
  margin: 0 auto;
  max-width: 34ch;
  padding: 10px 14px;
  border: 1px solid var(--kenar);
  border-radius: 12px;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--yazi-soluk);
  text-align: center;
  background: rgba(255, 255, 255, 0.03);
}
[hidden] { display: none !important; }

/* --------------------------- YATAY EKRAN --------------------------- */
/* Telefon yan cevrildiginde yazilar yeri kaplamasin */
@media (max-height: 520px) and (orientation: landscape) {
  .baslik    { font-size: 22px; }
  .altbaslik { display: none; }
  .ipucu     { display: none; }
  .sahne     { gap: 0; padding-top: 10px; padding-bottom: 10px; }
}