/* ==========================================================================
   Mutlu.CMS · 3D ana sayfa blokları (b3d)
   HomeSectionVisualStyle.ThreeD ile seçilen dört görünüm:
     .b3d-car    İçerik Listesi → 3D Kart Vitrini
     .b3d-bento  Neden Biz?     → Bento Izgara (3D eğilme + ışık)
     .b3d-steps  Nasıl Çalışır  → Derinlikli Adımlar (üst üste binen kartlar)
     .b3d-stats  Sayılarla Biz  → 3D Rakam Bandı
   Renkler MudBlazor tema değişkenlerinden gelir; yazı tipi siteden (inherit).
   Davranış: wwwroot/js/bloklar-3d.js. prefers-reduced-motion'da hareket kapanır.
   ========================================================================== */

.b3d-car, .b3d-bento-wrap, .b3d-steps, .b3d-stats {
  --b3d-accent: var(--mud-palette-primary, #2f5fe0);
  --b3d-ink: var(--mud-palette-text-primary, #121a33);
  --b3d-muted: var(--mud-palette-text-secondary, #5a6580);
  --b3d-surface: var(--mud-palette-surface, #ffffff);
  --b3d-line: var(--mud-palette-lines-default, #e1e5f0);
  --b3d-shadow: 18, 26, 51;
  font-family: inherit;
  padding-block: clamp(48px, 7vw, 80px);
}
.b3d-car *, .b3d-bento-wrap *, .b3d-steps *, .b3d-stats * { box-sizing: border-box; }

.b3d-wrap { max-width: 1200px; margin-inline: auto; padding-inline: clamp(16px, 4vw, 40px); }
.b3d-head { margin-bottom: 28px; max-width: 760px; }
.b3d-title {
  margin: 0; color: var(--b3d-ink);
  font-size: clamp(1.7rem, 3.4vw, 2.4rem); font-weight: 800; line-height: 1.12;
  letter-spacing: -.02em; text-wrap: balance;
}
.b3d-sub { margin: 10px 0 0; color: var(--b3d-muted); font-size: 1.04rem; line-height: 1.6; max-width: 62ch; }
.b3d-center { text-align: center; margin-top: 22px; }
.b3d-btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 22px; border-radius: 12px; border: 2px solid var(--b3d-accent);
  background: var(--b3d-accent); color: #fff; font-weight: 700; text-decoration: none; line-height: 1.2;
  transition: transform .15s ease;
}
.b3d-btn:hover { transform: translateY(-2px); }
.b3d-btn--ghost { background: transparent; color: var(--b3d-accent); }
.b3d-btn:focus-visible, .b3d-car__arrow:focus-visible, .b3d-car__dot:focus-visible,
.b3d-car__more:focus-visible, .b3d-bento__item:focus-visible { outline: 3px solid var(--b3d-accent); outline-offset: 3px; }

/* ---------------------------------------------------------------- 3D Kart Vitrini */
/* Yan kartlar ekran dışına taşar; bölüm kırpılır (mobilde yatay kaydırma olmasın). */
.b3d-car { overflow: hidden; }
.b3d-car__stage {
  position: relative;
  height: clamp(400px, 34vw, 420px);
  perspective: 1600px;
  transform-style: preserve-3d;
  touch-action: pan-y;
  outline: none;
}
.b3d-car__stage:focus-visible { outline: 3px solid var(--b3d-accent); outline-offset: 8px; border-radius: 18px; }
.b3d-car__stage::after {
  content: ""; position: absolute; left: 50%; bottom: -14px; width: min(380px, 80vw); height: 34px;
  transform: translateX(-50%);
  background: radial-gradient(closest-side, rgba(var(--b3d-shadow), .22), transparent);
  pointer-events: none;
}
.b3d-car__card {
  --w: min(340px, 78vw);
  position: absolute; top: 0; left: 50%;
  width: var(--w); margin-left: calc(var(--w) / -2);
  background: var(--b3d-surface);
  border: 1px solid var(--b3d-line);
  border-radius: 18px; overflow: hidden;
  transform: translateX(calc(var(--o) * 62%)) translateZ(calc(var(--a) * -170px)) rotateY(calc(var(--o) * -24deg));
  opacity: calc(1 - var(--a) * .22);
  transition: transform .6s cubic-bezier(.2, .7, .2, 1), opacity .45s ease, box-shadow .45s ease;
  box-shadow: 0 20px 40px -26px rgba(var(--b3d-shadow), .45);
  cursor: pointer;
}
.b3d-car__card.is-active { cursor: default; box-shadow: 0 40px 80px -34px rgba(var(--b3d-shadow), .6); }
.b3d-car__card.is-far { opacity: 0; pointer-events: none; }
.b3d-car__card:not(.is-active) .b3d-car__body { opacity: .7; }
.b3d-car__img {
  position: relative; aspect-ratio: 16 / 10;
  background: linear-gradient(135deg, color-mix(in srgb, var(--b3d-accent) 22%, #fff), color-mix(in srgb, var(--b3d-accent) 6%, #fff));
}
.b3d-car__img img { width: 100%; height: 100%; object-fit: cover; display: block; }
.b3d-car__date {
  position: absolute; left: 12px; top: 12px;
  background: rgba(255, 255, 255, .92); color: #121a33;
  font-size: .75rem; font-weight: 700; padding: 4px 9px; border-radius: 8px;
}
.b3d-car__body { padding: 16px 18px 20px; display: flex; flex-direction: column; gap: 6px; transition: opacity .45s ease; }
.b3d-car__name { margin: 0; color: var(--b3d-ink); font-size: 1.08rem; font-weight: 700; line-height: 1.3; }
.b3d-car__sum {
  margin: 0; color: var(--b3d-muted); font-size: .92rem; line-height: 1.5;
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
}
.b3d-car__more { margin-top: 6px; align-self: flex-start; color: var(--b3d-accent); font-weight: 700; text-decoration: none; }
.b3d-car__more span { display: inline-block; transition: transform .2s ease; }
.b3d-car__more:hover span { transform: translateX(4px); }

.b3d-car__nav { display: flex; align-items: center; justify-content: center; gap: 18px; margin-top: 26px; }
.b3d-car__arrow {
  width: 46px; height: 46px; border-radius: 50%;
  border: 1px solid var(--b3d-line); background: var(--b3d-surface); color: var(--b3d-ink);
  font-size: 1.15rem; cursor: pointer; transition: background .2s ease, color .2s ease, border-color .2s ease;
}
.b3d-car__arrow:hover { background: var(--b3d-accent); border-color: var(--b3d-accent); color: #fff; }
.b3d-car__dots { display: flex; gap: 8px; align-items: center; }
.b3d-car__dot {
  width: 9px; height: 9px; padding: 0; border: 0; border-radius: 99px; cursor: pointer;
  background: color-mix(in srgb, var(--b3d-ink) 22%, transparent); transition: width .3s ease, background .3s ease;
}
.b3d-car__dot.is-on { width: 26px; background: var(--b3d-accent); }

@media (max-width: 640px) {
  .b3d-car__card { transform: translateX(calc(var(--o) * 84%)) translateZ(calc(var(--a) * -140px)) rotateY(calc(var(--o) * -18deg)); }
  .b3d-car__card.is-edge { opacity: 0; pointer-events: none; }
}

/* ---------------------------------------------------------------- Bento Izgara */
.b3d-bento {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  grid-auto-rows: minmax(190px, auto);
  grid-auto-flow: dense;
  gap: 16px;
  perspective: 1200px;
}
.b3d-bento__item--lead { grid-column: span 2; grid-row: span 2; }
.b3d-bento--4 .b3d-bento__item:nth-child(4) { grid-column: span 2; }
.b3d-bento__item {
  position: relative; display: block; overflow: hidden;
  border-radius: 22px; border: 1px solid var(--b3d-line);
  background: var(--b3d-surface); color: inherit; text-decoration: none;
  transform: rotateX(var(--b3d-rx, 0deg)) rotateY(var(--b3d-ry, 0deg));
  transform-style: preserve-3d;
  transition: transform .45s cubic-bezier(.2, .7, .2, 1), box-shadow .35s ease;
  box-shadow: 0 1px 0 rgba(var(--b3d-shadow), .04);
}
.b3d-bento__item:hover { box-shadow: 0 34px 60px -32px rgba(var(--b3d-shadow), .5); }
.b3d-bento__item[data-b3d-tilting] { transition-duration: .08s, .35s; }
.b3d-bento__glare {
  position: absolute; inset: 0; pointer-events: none; opacity: 0; transition: opacity .3s ease;
  background: radial-gradient(420px circle at var(--b3d-gx, 50%) var(--b3d-gy, 0%),
              color-mix(in srgb, var(--b3d-accent) 20%, transparent), transparent 60%);
}
.b3d-bento__item:hover .b3d-bento__glare { opacity: 1; }
.b3d-bento__inner {
  position: relative; z-index: 1; height: 100%;
  display: flex; flex-direction: column; gap: 10px; padding: 24px;
  transform: translateZ(28px);
}
.b3d-bento__icon {
  display: grid; place-items: center; width: 50px; height: 50px; border-radius: 15px; flex: none;
  background: color-mix(in srgb, var(--b3d-accent) 12%, transparent); color: var(--b3d-accent);
}
.b3d-bento__photo { width: 56px; height: 56px; border-radius: 15px; object-fit: cover; display: block; }
.b3d-bento__name { color: var(--b3d-ink); font-size: 1.12rem; font-weight: 800; line-height: 1.25; margin-top: 4px; }
.b3d-bento__desc { color: var(--b3d-muted); font-size: .95rem; line-height: 1.55; }

/* öne çıkan (ilk) kutu: vurgu renginde, metin altta */
.b3d-bento__item--lead {
  border-color: transparent; color: #fff;
  background:
    radial-gradient(circle at 85% 15%, rgba(255, 255, 255, .18), transparent 40%),
    linear-gradient(150deg, var(--b3d-accent), color-mix(in srgb, var(--b3d-accent) 50%, #0b1330));
}
.b3d-bento__item--lead::before {
  content: ""; position: absolute; right: -60px; top: -60px; width: 260px; height: 260px; border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, .22);
  box-shadow: 0 0 0 40px rgba(255, 255, 255, .05), 0 0 0 80px rgba(255, 255, 255, .03);
  pointer-events: none;
}
.b3d-bento__item--lead .b3d-bento__inner { padding: 30px; }
.b3d-bento__item--lead .b3d-bento__icon { width: 64px; height: 64px; border-radius: 18px; background: rgba(255, 255, 255, .16); color: #fff; margin-bottom: auto; }
.b3d-bento__item--lead .b3d-bento__photo { width: 96px; height: 96px; margin-bottom: auto; }
.b3d-bento__item--lead .b3d-bento__name { color: #fff; font-size: clamp(1.4rem, 2.4vw, 1.9rem); }
.b3d-bento__item--lead .b3d-bento__desc { color: rgba(255, 255, 255, .86); font-size: 1.02rem; max-width: 42ch; }
.b3d-bento__item--lead .b3d-bento__glare { background: radial-gradient(420px circle at var(--b3d-gx, 50%) var(--b3d-gy, 0%), rgba(255, 255, 255, .22), transparent 60%); }

@media (max-width: 900px) {
  .b3d-bento { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .b3d-bento__item--lead { grid-column: span 2; grid-row: span 1; }
  .b3d-bento__item--lead .b3d-bento__icon, .b3d-bento__item--lead .b3d-bento__photo { margin-bottom: 18px; }
}
@media (max-width: 560px) {
  .b3d-bento { grid-template-columns: 1fr; grid-auto-rows: auto; }
  .b3d-bento__item--lead, .b3d-bento--4 .b3d-bento__item:nth-child(4) { grid-column: auto; }
}

/* ---------------------------------------------------------------- Derinlikli Adımlar */
.b3d-steps__grid {
  display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
  gap: clamp(28px, 5vw, 64px); align-items: start;
}
.b3d-steps__side { position: sticky; top: 110px; display: flex; flex-direction: column; gap: 22px; align-items: flex-start; }
.b3d-steps__img {
  width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: 20px; display: block;
  box-shadow: 0 30px 60px -36px rgba(var(--b3d-shadow), .55);
}
.b3d-steps__list {
  list-style: none; margin: 0; padding: 0 0 48px;
  display: flex; flex-direction: column; gap: 18px; perspective: 1000px;
}
.b3d-steps__card {
  position: sticky; top: calc(110px + var(--i) * 26px);
  display: flex; gap: 20px; align-items: flex-start;
  min-height: 124px; padding: 26px;
  border-radius: 22px; border: 1px solid var(--b3d-line); background: var(--b3d-surface);
  box-shadow: 0 -10px 30px -22px rgba(var(--b3d-shadow), .35), 0 26px 44px -34px rgba(var(--b3d-shadow), .5);
  transform-origin: 50% 0;
  transition: transform .75s cubic-bezier(.2, .7, .2, 1), opacity .75s ease;
}
.b3d-steps__card[data-b3d-wait] { opacity: 0; transform: translateY(70px) rotateX(-24deg) scale(.94); }
.b3d-steps__num {
  flex: none; min-width: 2.2ch;
  font-size: clamp(2.4rem, 4vw, 3.2rem); font-weight: 800; line-height: .9;
  color: transparent; -webkit-text-stroke: 2px var(--b3d-accent);
}
.b3d-steps__text { display: flex; flex-direction: column; gap: 6px; padding-top: 4px; }
.b3d-steps__name { color: var(--b3d-ink); font-size: 1.2rem; font-weight: 800; line-height: 1.3; }
.b3d-steps__desc { color: var(--b3d-muted); line-height: 1.6; }
.b3d-steps__card:last-child { border-color: color-mix(in srgb, var(--b3d-accent) 45%, var(--b3d-line)); }

@media (max-width: 860px) {
  .b3d-steps__grid { grid-template-columns: 1fr; }
  .b3d-steps__side { position: static; }
  .b3d-steps__card { top: calc(72px + var(--i) * 16px); min-height: 0; padding: 20px; }
}

/* ---------------------------------------------------------------- 3D Rakam Bandı */
.b3d-stats {
  position: relative; overflow: hidden; isolation: isolate;
  color: #fff; background: #0b1330;
  padding-block: clamp(64px, 9vw, 104px);
}
.b3d-stats::before {
  content: ""; position: absolute; inset: 0; z-index: -2;
  background: var(--b3d-stats-bg, linear-gradient(135deg, #22357a, #0b1330)); opacity: .55;
}
.b3d-stats__floor {
  position: absolute; left: -30%; right: -30%; bottom: -30%; height: 80%; z-index: -1;
  background-image:
    linear-gradient(rgba(255, 255, 255, .16) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .16) 1px, transparent 1px);
  background-size: 56px 56px;
  transform: perspective(700px) rotateX(64deg); transform-origin: 50% 0;
  -webkit-mask-image: linear-gradient(to bottom, transparent, #000 30%, #000 60%, transparent);
          mask-image: linear-gradient(to bottom, transparent, #000 30%, #000 60%, transparent);
  animation: b3d-floor 5s linear infinite;
}
@keyframes b3d-floor { to { background-position: 0 56px, 0 0; } }
.b3d-stats__grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 32px 24px; text-align: center; perspective: 900px;
}
.b3d-stats__item { display: flex; flex-direction: column; align-items: center; gap: 10px; transform: rotateX(14deg); transform-style: preserve-3d; }
.b3d-stats__icon {
  display: grid; place-items: center; width: 50px; height: 50px; border-radius: 50%;
  background: rgba(255, 255, 255, .08); border: 1px solid rgba(255, 255, 255, .16); color: #f2b33d;
}
.b3d-stats__value {
  color: #fff; font-size: clamp(2.6rem, 6vw, 4rem); font-weight: 900; line-height: 1;
  letter-spacing: -.03em; font-variant-numeric: tabular-nums;
  text-shadow: 0 1px 0 #cfd8f2, 0 2px 0 #b7c3e6, 0 3px 0 #a0aedb, 0 4px 0 #8899cf,
               0 5px 0 #7184c2, 0 6px 0 #5a6fb5, 0 12px 22px rgba(0, 0, 0, .5);
  transform: translateZ(24px);
}
.b3d-stats__label { color: rgba(255, 255, 255, .78); font-size: .98rem; letter-spacing: .02em; }

/* ---------------------------------------------------------------- hareket azaltma */
@media (prefers-reduced-motion: reduce) {
  .b3d-car__card, .b3d-car__body, .b3d-bento__item, .b3d-steps__card, .b3d-btn { transition: none; }
  .b3d-stats__floor { animation: none; }
  .b3d-steps__card[data-b3d-wait] { opacity: 1; transform: none; }
}