/* Temel Ayarlar ve Reset */
body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, Oxygen, Ubuntu, Cantarell, Fira Sans, Droid Sans, Helvetica Neue, sans-serif;
    background: #170f00;
    color: #eee;
    margin: 0;
    overflow-x: hidden;
}

code {
    font-family: source-code-pro, Menlo, Monaco, Consolas, Courier New, monospace;
}

:root {
    --gold: #d1b48a;
    --brown: #3a2c1f;
    --rail: #5a422d;
    --bg: #2c0000;
    --content-max: 1100px;
    --topbar-height: 72px;
    --toc-width: 280px;
    --toc-gap: 32px;
}

* {
    box-sizing: border-box;
}

.App {
    min-height: 100vh;
}

/* Üst Bar (Topbar) */
.topbar {
    background: linear-gradient(180deg, #160e00, #221600);
    border-bottom: 1px solid #ffffff;
    box-shadow: 0 10px 18px #00000073;
    height: var(--topbar-height);
    justify-content: space-between;
    padding: 12px 24px;
    position: -webkit-sticky;
    position: sticky;
    top: 0;
    width: 100%;
    z-index: 50;
    align-items: center;
    display: flex;
}

.topbar-left {
    gap: 12px;
    align-items: center;
    display: flex;
}

.topbar-logo {
    filter: drop-shadow(0 4px 10px rgba(0, 0, 0, .55));
    height: 46px;
    object-fit: contain;
    width: auto;
}

.topbar-right {
    align-items: center;
    display: flex;
    gap: 14px;
}

.topbar-link {
    align-items: center;
    background: linear-gradient(180deg, #160e00, #221600);
    border: 1px solid #ffffff;
    border-radius: 10px;
    color: #f2e6d8;
    display: inline-flex;
    font-weight: 700;
    gap: 8px;
    letter-spacing: .2px;
    padding: 10px 12px;
    text-decoration: none;
    transition: transform .15s ease, box-shadow .2s ease, border-color .2s ease, background .2s ease;
}

.topbar-link:hover {
    border-color: #ffd178;
    box-shadow: 0 12px 18px #00000073;
    color: var(--silver);
    transform: translateY(-1px);
}

.App-header,
.topbar-select {
    position: relative;
}

.App-header {
    align-items: stretch;
    display: flex;
    flex-direction: column;
    padding: 0;
}

/* İçerik İskeleti */
.content-shell {
    grid-gap: var(--toc-gap);
    display: grid;
    gap: var(--toc-gap);
    grid-template-columns: var(--toc-width) 1fr;
    margin: 0;
    max-width: 100%;
    padding: 0;
    width: 100%;
}

/* Sol Menü (Table of Contents) */
.toc {
    align-self: start;
    -webkit-backdrop-filter: blur(4px);
    backdrop-filter: blur(4px);
    background: linear-gradient(180deg, #170f00, #2e1e00 60%, #1d1300);
    border: 1px solid #ffffff;
    border-radius: 0 0 12px 0;
    box-shadow: 0 22px 35px #000000a6, inset 0 1px 0 #ffffff08;
    display: flex;
    flex-direction: column;
    height: calc(100vh - var(--topbar-height));
    overflow: hidden;
    padding: 16px 12px;
    position: -webkit-sticky;
    position: sticky;
    row-gap: 12px;
    top: var(--topbar-height);
}

.toc ul {
    list-style: none;
    margin: 0;
    max-height: calc(100vh - 260px);
    overflow-y: auto;
    padding: 0;
    scrollbar-color: #ffffff #0000;
    scrollbar-width: thin;
}

.toc ul::-webkit-scrollbar {
    width: 8px;
}

.toc ul::-webkit-scrollbar-track {
    background: #0000;
}

.toc ul::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, #d1b48a8c, #926f4f99);
    border: 2px solid #1a141166;
    border-radius: 10px;
}

.toc li+li {
    margin-top: 6px;
}

.toc-control {
    align-items: center;
    background: linear-gradient(180deg, #3f3126e6, #2e231bf2);
    border: 1px solid #d1b48a40;
    border-radius: 10px;
    color: #f2e6d8;
    cursor: pointer;
    display: flex;
    font-size: 13px;
    font-weight: 700;
    justify-content: center;
    letter-spacing: .4px;
    padding: 12px;
    text-transform: none;
    transition: transform .15s ease, box-shadow .2s ease, border-color .2s ease, background .2s ease;
    width: 100%;
}

.toc-control.top {
    background: linear-gradient(180deg, #443327, #3a2b21);
    border-color: #ffe9cd26;
}

.toc-control-bottom {
    margin-top: auto;
}

.toc-control.small {
    min-width: 44px;
    padding: 10px 12px;
    width: auto;
}

.toc-control:focus-visible,
.toc-control:hover {
    background: linear-gradient(180deg, #624630f2, #3c2c21f2);
    border-color: #d1b48aa6;
    box-shadow: 0 14px 20px #00000080;
    color: var(--gold);
    outline: none;
    transform: translateY(-1px);
}

.toc button {
    background: linear-gradient(180deg, #231700, #140d00);
    border: 1px solid #7b6738;
    border-radius: 10px;
    color: #ffecb1;
    cursor: pointer;
    font-size: 13px;
    letter-spacing: .3px;
    padding: 12px 12px 12px 14px;
    position: relative;
    text-align: left;
    text-transform: none;
    transition: transform .15s ease, box-shadow .2s ease, border-color .2s ease, background .2s ease;
    width: 100%;
}

.toc button svg,
.toc-control svg {
    font-size: 18px;
}

.toc-button.active {
  outline: 2px solid rgba(255, 215, 0, 0.45);
  box-shadow: 0 0 0 2px rgba(0,0,0,0.3) inset;
}


.toc button:focus-visible,
.toc button:hover {
    background: linear-gradient(180deg, #140e00, #4d3b14);
    border-color: #ffffff;
    box-shadow: 0 14px 20px #00000080;
    color: var(--white);
    outline: none;
    transform: translateY(-1px);
}

.toc-bottom-row {
    align-items: center;
    display: flex;
    gap: 10px;
    justify-content: space-between;
    margin-top: auto;
}

.toc-prev-next {
    display: flex;
    gap: 8px;
}

.toc-prev-next .toc-control {
    background: linear-gradient(180deg, #302307, #261b03);
    border-color: #7b6738;
    color: #ffe9d4;
}

.toc-prev-next .toc-control:focus-visible,
.toc-prev-next .toc-control:hover {
    background: linear-gradient(180deg, #302307, #4d3b14);
}

.toc-control:disabled {
    box-shadow: none;
    cursor: not-allowed;
    opacity: .45;
    transform: none;
}

/* Ana İçerik Alanı */
.wrap {
    align-items: center;
    display: flex;
    flex-direction: column;
    gap: 0;
    justify-self: center;
    padding: 0 16px 12px;
    text-align: center;
    width: min(var(--content-max), 100%);
}

.wrap>*+* {
    margin-top: 12px;
}

.wrap>.video-box {
    margin-top: 0;
}

/* Footer */
.page-footer {
    grid-gap: var(--toc-gap);
    display: grid;
    gap: var(--toc-gap);
    grid-template-columns: var(--toc-width) 1fr;
    opacity: .85;
    padding: 20px 16px 32px;
    width: 100%;
}

.page-footer__links {
    align-items: center;
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    grid-column: 2;
    justify-self: center;
}

.page-footer__link {
    color: var(--gold);
    font-weight: 700;
    letter-spacing: .2px;
    text-decoration: none;
    transition: color .2s ease, opacity .2s ease;
}

.page-footer__link:focus-visible,
.page-footer__link:hover {
    color: #f5dfc2;
    opacity: 1;
    outline: none;
}

/* Resim ve Video Stilleri */
.content-image {
    border-radius: 8px;
    box-shadow: 0 8px 20px #0000008c;
    display: block;
    height: auto;
    margin: 0 auto;
    max-width: min(750px, 100%);
    width: auto;
}

.compare,
.content-image,
.video-box {
    scroll-margin-top: calc(var(--topbar-height) + 32px);
}

.compare {
    background: #000;
    border: 3px solid var(--brown);
    border-radius: 12px;
    box-shadow: 0 10px 25px #0009;
    min-height: 320px;
    overflow: hidden;
    position: relative;
    width: min(750px, 100%);
}

.compare img {
    display: block;
    height: 100%;
    inset: 0;
    object-fit: contain;
    position: absolute;
    width: 100%;
}

.compare .after {
    clip-path: inset(0 0 0 50%);
    transition: clip-path .2s ease, -webkit-clip-path .2s ease;
}

.compare:after {
    border: 2px solid #d1b48a59;
    border-radius: 10px;
    content: "";
    inset: 8px;
    pointer-events: none;
    position: absolute;
}

.slider {
    background: var(--rail);
    cursor: ew-resize;
    height: 100%;
    top: 0;
    transform: translateX(-50%);
    width: 3px;
    z-index: 3;
}

.slider,
.slider:before {
    left: 50%;
    position: absolute;
}

.slider:before {
    background: #2b241e;
    border: 2px solid var(--gold);
    border-radius: 2px;
    box-shadow: inset 0 0 0 2px #5a422d;
    content: "";
    height: 22px;
    top: 50%;
    transform: translate(-50%, -50%) rotate(45deg);
    width: 22px;
}

@keyframes hintMoveSmooth {
    0% { left: 46%; }
    50% { left: 54%; }
    to { left: 46%; }
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 #d1b48a73; }
    70% { box-shadow: 0 0 0 12px #d1b48a00; }
    to { box-shadow: 0 0 0 0 #d1b48a00; }
}

.compare.hint .slider {
    animation: hintMoveSmooth 3.2s ease-in-out infinite alternate;
}

.compare.hint .slider:before {
    animation: pulse 2s ease-out infinite;
}

.video-box {
    background: #000;
    border: 2px solid #ffffff;
    border-radius: 12px;
    box-shadow: 0 10px 25px #0009;
    overflow: hidden;
    position: relative;
    width: min(750px, 100%);
}

.video-box video {
    display: block;
    height: auto;
    object-fit: contain;
    pointer-events: none;
    width: 100%;
}

.language-select-container {
    position: static;
    z-index: auto;
}

/* Mobil Uyumluluk (Responsive) */
@media (max-width: 1050px) {
    .content-shell {
        grid-template-columns: 1fr;
    }

    .toc {
        display: none;
    }

    .page-footer {
        grid-template-columns: 1fr;
        justify-items: center;
        padding: 20px 12px 28px;
    }

    .page-footer__links {
        grid-column: 1;
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .App-header {
        padding-top: 60px;
    }

    .compare {
        min-height: 220px;
    }
}

@media (max-width: 640px) {
    .toc {
        display: none;
    }

    .content-shell {
        padding: 0 12px;
    }
}


(function () {
  const toc = document.querySelector(".toc");
  if (!toc) return;

  const buttons = Array.from(toc.querySelectorAll(".toc-button"));
  const btnUp = toc.querySelector(".toc-control-top");
  const btnDown = toc.querySelector(".toc-bottom-row .toc-control[aria-label='Aşağı kaydır']");
  const btnPrev = toc.querySelector(".toc-prev-next .toc-control[aria-label='Önceki bölüm']");
  const btnNext = toc.querySelector(".toc-prev-next .toc-control[aria-label='Sonraki bölüm']");

  // Menüdeki hedefleri, sayfada gerçekten var olan section’lara filtrele
  const items = buttons
    .map((btn) => {
      const id = btn.dataset.target;
      const el = id ? document.getElementById(id) : null;
      return { btn, id, el };
    })
    .filter((x) => x.el);

  if (!items.length) return;

  let currentIndex = 0;

  function setActiveByIndex(i) {
    currentIndex = Math.max(0, Math.min(i, items.length - 1));
    items.forEach((x, idx) => x.btn.classList.toggle("active", idx === currentIndex));
  }

  function scrollToIndex(i) {
    setActiveByIndex(i);
    items[currentIndex].el.scrollIntoView({ behavior: "smooth", block: "start" });
  }

  // Menü tıklaması
  items.forEach((x, idx) => {
    x.btn.addEventListener("click", (e) => {
      e.preventDefault();
      scrollToIndex(idx);
    });
  });

  // Prev / Next
  if (btnPrev) btnPrev.addEventListener("click", () => scrollToIndex(currentIndex - 1));
  if (btnNext) btnNext.addEventListener("click", () => scrollToIndex(currentIndex + 1));

  // Yukarı / Aşağı (menü scroll)
  if (btnUp) btnUp.addEventListener("click", () => toc.scrollBy({ top: -220, behavior: "smooth" }));
  if (btnDown) btnDown.addEventListener("click", () => toc.scrollBy({ top: 220, behavior: "smooth" }));

  // Scroll oldukça aktif bölümü güncelle (IntersectionObserver)
  const io = new IntersectionObserver(
    (entries) => {
      // Görünür olanlar içinden en üsttekine öncelik ver
      const visible = entries
        .filter((e) => e.isIntersecting)
        .sort((a, b) => a.boundingClientRect.top - b.boundingClientRect.top)[0];
      if (!visible) return;

      const idx = items.findIndex((x) => x.el === visible.target);
      if (idx >= 0) setActiveByIndex(idx);
    },
    {
      root: null,
      // Üstten biraz pay bırak (topbar vs. varsa)
      rootMargin: "-20% 0px -70% 0px",
      threshold: 0.01,
    }
  );

  items.forEach((x) => io.observe(x.el));

  // İlk aktif
  setActiveByIndex(0);
})();