:root {
  --zemin: #f7f9fb;
  --yuzey: #ffffff;
  --yazi: #0f1c2e;
  --soluk: #54637a;
  --cizgi: #dfe5ec;
  --vurgu: #0b7a6e;
  --vurgu-yazi: #ffffff;
  --vurgu-soluk: #e3f4f1;
  --koyu: #0f1c2e;
  --koyu-yazi: #eef3f8;
  --koyu-soluk: #a9b6c7;
  --uyari: #a45c00;
  --uyari-zemin: #fff3de;
  --tamam: #0b7a4b;
  --tamam-zemin: #e4f6ec;
  --golge: 0 1px 2px rgba(15, 28, 46, .06), 0 12px 32px rgba(15, 28, 46, .08);
}

@media (prefers-color-scheme: dark) {
  :root {
    --zemin: #0b1420;
    --yuzey: #131f2f;
    --yazi: #eef3f8;
    --soluk: #a3b1c4;
    --cizgi: #24344a;
    --vurgu: #35c2b0;
    --vurgu-yazi: #06201c;
    --vurgu-soluk: #12312f;
    --koyu: #131f2f;
    --uyari: #ffc266;
    --uyari-zemin: #3a2a0d;
    --tamam: #6ddc9f;
    --tamam-zemin: #12321f;
    --golge: 0 1px 2px rgba(0, 0, 0, .3), 0 12px 32px rgba(0, 0, 0, .35);
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 72px; }

body {
  margin: 0;
  background: var(--zemin);
  color: var(--yazi);
  font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, p, ul, ol, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
a { color: inherit; }

.kap { width: min(1080px, 100% - 32px); margin-inline: auto; }

/* Üst şerit */
.ust {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--zemin) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--cizgi);
}
.ust-ic { display: flex; align-items: center; justify-content: space-between; height: 60px; gap: 16px; }
.marka { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 20px; letter-spacing: -.01em; text-decoration: none; }
.marka svg { width: 28px; height: 28px; }
.kalkan { fill: var(--vurgu); }
.tik { fill: none; stroke: var(--vurgu-yazi); stroke-width: 2.6; stroke-linecap: round; stroke-linejoin: round; }
nav { display: flex; align-items: center; gap: 22px; font-size: 15px; }
nav a { text-decoration: none; color: var(--soluk); }
nav a:hover { color: var(--yazi); }

/* Düğmeler */
.dugme {
  display: inline-block; padding: 12px 22px; border-radius: 10px;
  background: var(--vurgu); color: var(--vurgu-yazi);
  font-weight: 600; text-decoration: none; border: 1px solid transparent;
  transition: filter .15s;
}
.dugme:hover { filter: brightness(1.08); }
.dugme.ikincil { background: transparent; color: var(--yazi); border-color: var(--cizgi); }
.dugme.kucuk { padding: 7px 14px; font-size: 14px; }
nav a.dugme { color: var(--vurgu-yazi); }
a:focus-visible { outline: 3px solid var(--vurgu); outline-offset: 3px; border-radius: 6px; }

/* Giriş */
.giris { padding: 72px 0 80px; }
.giris-ic { display: grid; grid-template-columns: 1.15fr .85fr; gap: 56px; align-items: center; }
.rozet {
  display: inline-block; margin-bottom: 18px; padding: 5px 12px; border-radius: 999px;
  background: var(--vurgu-soluk); color: var(--vurgu); font-size: 14px; font-weight: 600;
}
h1 { font-size: clamp(32px, 5vw, 50px); line-height: 1.12; letter-spacing: -.025em; text-wrap: balance; }
.ozet { margin-top: 20px; font-size: 19px; color: var(--soluk); max-width: 56ch; }
.eylemler { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.sistemler { margin-top: 22px; font-size: 14px; color: var(--soluk); }

/* Örnek rapor kartı */
.ornek {
  background: var(--yuzey); border: 1px solid var(--cizgi); border-radius: 16px;
  padding: 22px; box-shadow: var(--golge);
}
.ornek figcaption { font-size: 12px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--soluk); }
.ornek-bas { display: flex; align-items: center; gap: 16px; margin: 14px 0 18px; padding-bottom: 18px; border-bottom: 1px solid var(--cizgi); }
.puan {
  display: flex; align-items: baseline; gap: 4px; padding: 10px 14px; border-radius: 12px;
  background: var(--uyari-zemin); color: var(--uyari);
}
.puan strong { font-size: 34px; line-height: 1; font-variant-numeric: tabular-nums; }
.puan span { font-size: 14px; }
.ornek-ad { font-weight: 700; }
.ornek-alt { font-size: 14px; color: var(--soluk); }
.bulgular { display: grid; gap: 10px; }
.bulgular li { display: flex; align-items: center; gap: 10px; font-size: 15px; }
.bulgular b { flex: none; width: 58px; padding: 2px 0; border-radius: 6px; text-align: center; font-size: 12px; }
.bulgular .uyari b { background: var(--uyari-zemin); color: var(--uyari); }
.bulgular .tamam b { background: var(--tamam-zemin); color: var(--tamam); }

/* Bölümler */
.bolum { padding: 76px 0; }
.bolum.ince { padding: 56px 0; border-top: 1px solid var(--cizgi); }
h2 { font-size: clamp(26px, 3.4vw, 34px); letter-spacing: -.02em; line-height: 1.2; }
.bolum-ozet { margin-top: 12px; color: var(--soluk); max-width: 62ch; }
h3 { font-size: 18px; letter-spacing: -.005em; }

.izgara { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; margin-top: 36px; }
.izgara.iki { grid-template-columns: repeat(auto-fill, minmax(400px, 1fr)); }
.izgara article { background: var(--yuzey); border: 1px solid var(--cizgi); border-radius: 14px; padding: 22px; }
.izgara p { margin-top: 8px; color: var(--soluk); font-size: 16px; }

.koyu { background: var(--koyu); color: var(--koyu-yazi); }
.adimlar { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; margin-top: 40px; counter-reset: adim; }
.adimlar li { counter-increment: adim; }
.adimlar li::before {
  content: counter(adim); display: grid; place-items: center; width: 40px; height: 40px;
  margin-bottom: 16px; border-radius: 50%; border: 1.5px solid var(--koyu-soluk);
  font-weight: 700; font-variant-numeric: tabular-nums;
}
.adimlar p { margin-top: 8px; color: var(--koyu-soluk); font-size: 16px; }

.yakinda { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.yakinda li { padding: 9px 16px; border: 1px dashed var(--cizgi); border-radius: 999px; color: var(--soluk); font-size: 15px; }

.cagri { text-align: center; background: var(--vurgu-soluk); }
.cagri p { margin: 14px auto 28px; max-width: 58ch; color: var(--soluk); }

.alt { padding: 28px 0; border-top: 1px solid var(--cizgi); font-size: 14px; color: var(--soluk); }
.alt-ic { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; }

@media (max-width: 860px) {
  .giris { padding: 44px 0 56px; }
  .giris-ic { grid-template-columns: 1fr; gap: 40px; }
  .adimlar { grid-template-columns: 1fr; gap: 28px; }
  .izgara.iki { grid-template-columns: 1fr; }
  .bolum { padding: 56px 0; }
  nav a:not(.dugme) { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}