:root {
  --zemin: #0f1720;
  --yuzey: #18222e;
  --yuzey-2: #1f2b39;
  --cizgi: #2b3a4a;
  --metin: #e6edf3;
  --soluk: #a6b5c4;
  --vurgu: #19c8a6;
  --vurgu-koyu: #0f8f78;
  --uyari: #f5b73d;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --kenar-genislik: 220px;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--zemin);
  color: var(--metin);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  padding-bottom: 76px;
}
a { color: var(--vurgu); text-underline-offset: 3px; }
a:hover { color: #5eead0; }
:focus-visible { outline: 3px solid var(--uyari); outline-offset: 2px; border-radius: 2px; }
.atla { position: absolute; left: -999px; top: 0; background: var(--uyari); color: #111; padding: 8px 12px; z-index: 100; }
.atla:focus { left: 8px; top: 8px; }

/* Ust serit */
.serit {
  display: flex; align-items: center; gap: 12px;
  background: #0a1017; border-bottom: 1px solid var(--cizgi);
  padding: 6px 16px; font-family: var(--mono); font-size: 12.5px; color: var(--soluk);
  position: relative; z-index: 20;
}
.serit-etiket { color: var(--zemin); background: var(--vurgu); padding: 1px 8px; border-radius: 3px; font-weight: 700; white-space: nowrap; letter-spacing: .04em; }
.serit-akis { display: flex; gap: 22px; overflow: hidden; white-space: nowrap; min-width: 0; flex: 1; }
.serit-akis a { color: var(--metin); text-decoration: none; overflow: hidden; text-overflow: ellipsis; }
.serit-akis a:hover { text-decoration: underline; }
.serit-kaynak { color: var(--vurgu); }

/* Kabuk: sol kenar cubugu */
.kabuk { min-height: 100vh; }
.kenar {
  background: var(--yuzey);
  border-bottom: 1px solid var(--cizgi);
  padding: 12px 16px;
}
.kenar-ust { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.marka { display: inline-flex; align-items: center; gap: 10px; color: var(--metin); text-decoration: none; font-weight: 700; font-size: 18px; }
.marka-isaret { font-family: var(--mono); background: var(--vurgu); color: var(--zemin); padding: 3px 7px; border-radius: 4px; font-size: 14px; }
.menu-dugme {
  display: none; background: var(--yuzey-2); color: var(--metin); border: 1px solid var(--cizgi);
  border-radius: 6px; padding: 8px 14px; font: inherit; font-size: 15px; cursor: pointer; min-height: 44px;
}
.nav-liste { list-style: none; margin: 8px 0 0; padding: 0; }
.nav-liste a { display: block; padding: 7px 10px; color: var(--metin); text-decoration: none; border-radius: 5px; border-left: 3px solid transparent; }
.nav-liste a:hover { background: var(--yuzey-2); }
.nav-liste a[aria-current="page"] { border-left-color: var(--vurgu); color: var(--vurgu); background: var(--yuzey-2); }
.nav-baslik { font-family: var(--mono); font-size: 12px; text-transform: uppercase; letter-spacing: .08em; color: var(--soluk); margin: 18px 10px 0; }
.kenar-not { font-size: 13px; color: var(--soluk); margin: 18px 10px 0; line-height: 1.5; }

.ana-alan { padding: 0 16px 24px; }

@media (min-width: 900px) {
  .kabuk { display: grid; grid-template-columns: var(--kenar-genislik) minmax(0, 1fr); }
  .kenar {
    position: sticky; top: 0; align-self: start; height: calc(100vh - 34px);
    border-bottom: 0; border-right: 1px solid var(--cizgi); padding: 20px 12px; overflow-y: auto;
  }
  .ana-alan { padding: 0 28px 32px; }
}

/* Mobilde menu: JS varsa katlanir, yoksa acik kalir */
@media (max-width: 899px) {
  .js .menu-dugme { display: inline-flex; align-items: center; }
  .js .nav-kutu { display: none; }
  .js .nav-acik .nav-kutu { display: block; }
}

/* Icerik */
.iki-sutun { display: grid; gap: 28px; }
@media (min-width: 1150px) {
  .iki-sutun { grid-template-columns: minmax(0, 1fr) 310px; align-items: start; }
  .iki-sutun .panel { position: sticky; top: 16px; }
}
.icerik { max-width: 760px; padding-top: 24px; }
.icerik.tek { max-width: 820px; }
h1 { font-size: clamp(1.6rem, 4.5vw, 2.2rem); line-height: 1.2; margin: 0 0 14px; letter-spacing: -.01em; }
h2 { font-size: 1.35rem; line-height: 1.3; margin: 32px 0 10px; }
h3 { font-size: 1.15rem; line-height: 1.35; margin: 0 0 6px; }
.bolum-bsl { font-family: var(--mono); font-size: 13px; text-transform: uppercase; letter-spacing: .1em; color: var(--soluk); border-bottom: 1px solid var(--cizgi); padding-bottom: 6px; margin-top: 28px; }
.giris { color: var(--soluk); font-size: 1.05rem; }
.meta { font-family: var(--mono); font-size: 12.5px; color: var(--soluk); margin: 6px 0; display: flex; flex-wrap: wrap; gap: 4px 10px; align-items: center; }
.mono { font-family: var(--mono); }
.bos { color: var(--soluk); font-style: italic; }

.etiket {
  display: inline-block; font-family: var(--mono); font-size: 12px; padding: 1px 9px; border: 1px solid var(--vurgu-koyu);
  border-radius: 999px; color: var(--vurgu); text-decoration: none; background: transparent;
}
.etiket:hover, .etiket.secili { background: var(--vurgu); color: var(--zemin); }
.filtre { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0 20px; }

.yazi-satir { padding: 16px 0; border-bottom: 1px solid var(--cizgi); }
.yazi-satir p { margin: 0; }
.yazi-satir h3 a { color: var(--metin); text-decoration: none; }
.yazi-satir h3 a:hover { color: var(--vurgu); text-decoration: underline; }
.yazi-satir .meta { margin-top: 8px; }

/* Makale */
.makale .govde { font-size: 1.04rem; }
.makale .govde p { margin: 0 0 1.05em; }
.makale .govde ul { padding-left: 1.3em; margin: 0 0 1.1em; }
.makale .govde li { margin-bottom: .4em; }
.makale-alt { margin-top: 32px; padding-top: 14px; border-top: 1px solid var(--cizgi); }

.uyari-kutu {
  border-left: 4px solid var(--uyari); background: var(--yuzey); padding: 12px 16px; border-radius: 0 6px 6px 0;
  font-size: .95rem; color: var(--metin); margin: 28px 0;
}
.uyari-kutu strong { color: var(--uyari); }

/* Piyasa panelleri */
.panel { background: var(--yuzey); border: 1px solid var(--cizgi); border-radius: 8px; padding: 14px 16px; margin-top: 24px; }
.panel h2 { font-family: var(--mono); font-size: 13px; text-transform: uppercase; letter-spacing: .1em; color: var(--vurgu); margin: 0 0 8px; }
.panel-liste { list-style: none; margin: 0; padding: 0; }
.panel-liste li { padding: 9px 0; border-bottom: 1px solid var(--cizgi); font-size: 15px; line-height: 1.4; }
.panel-liste li:last-child { border-bottom: 0; }
.panel-liste a { color: var(--metin); text-decoration: none; }
.panel-liste a:hover { color: var(--vurgu); text-decoration: underline; }
.panel-liste .meta { font-size: 11.5px; margin: 3px 0 0; }
.panel-alt { margin: 8px 0 0; font-size: 14px; }
.panel-not { font-size: 12px; color: var(--soluk); margin: 10px 0 0; }

.haber-liste { list-style: none; margin: 18px 0; padding: 0; }
.haber { padding: 14px 0; border-bottom: 1px solid var(--cizgi); }
.haber h2 { font-size: 1.1rem; margin: 2px 0 4px; }
.haber p { margin: 0 0 6px; color: var(--soluk); font-size: .95rem; }
.kaynak-ad { color: var(--vurgu); }
.kaynakta { font-size: .9rem; }

.dugme { display: inline-block; background: var(--vurgu); color: var(--zemin); padding: 10px 18px; border-radius: 6px; font-weight: 700; text-decoration: none; min-height: 44px; }
.dugme:hover { background: #5eead0; color: var(--zemin); }

/* Alt bilgi */
.alt { border-top: 1px solid var(--cizgi); margin: 0 16px; padding: 18px 0 28px; font-size: 14px; color: var(--soluk); }
.alt p { margin: 4px 0; }
.alt-uyari { max-width: 760px; }
@media (min-width: 900px) { .alt { margin: 0 28px; } }

/* Sabit satilik kutusu */
.satilik {
  position: fixed; right: 12px; bottom: 12px; z-index: 50; max-width: 260px;
  background: var(--yuzey-2); border: 1px solid var(--uyari); border-radius: 8px; padding: 8px 12px;
  font-size: 12.5px; line-height: 1.4; display: flex; flex-direction: column; gap: 2px; color: var(--metin);
  box-shadow: 0 4px 14px rgba(0, 0, 0, .4);
}
.satilik strong { color: var(--uyari); font-size: 13px; }
@media (max-width: 480px) { .satilik { left: 12px; right: 12px; max-width: none; flex-direction: row; flex-wrap: wrap; justify-content: space-between; align-items: center; } }

@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; transition: none !important; animation: none !important; } }