:root {
  color-scheme: light dark;
  --zemin: #ffffff;
  --zemin-2: #f2f5f3;
  --metin: #17201b;
  --soluk: #4b5751;
  --sinir: #c9d3cd;
  --marka: #0b5f3a;
  --marka-metin: #0b5f3a;
  --on-marka: #ffffff;
  --cam: #1d4e89;
  --cam-metin: #1d4e89;
  --on-cam: #ffffff;
  --odak: #b35900;
}
@media (prefers-color-scheme: dark) {
  :root {
    --zemin: #101513;
    --zemin-2: #18201c;
    --metin: #e8eeea;
    --soluk: #a7b4ad;
    --sinir: #34413a;
    --marka: #7fd6a8;
    --marka-metin: #7fd6a8;
    --on-marka: #0b1f15;
    --cam: #8db8ec;
    --cam-metin: #8db8ec;
    --on-cam: #0c1a2c;
    --odak: #f0b36e;
  }
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--zemin); color: var(--metin);
  font: 16px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--marka-metin); text-underline-offset: 3px; }
:focus-visible { outline: 3px solid var(--odak); outline-offset: 2px; }
.atla { position: absolute; left: -999px; top: 0; background: var(--zemin); padding: 8px 12px; z-index: 10; }
.atla:focus { left: 16px; }
.kap { max-width: 1040px; margin: 0 auto; padding: 0 16px; }

/* Üst çubuk */
.ust { border-bottom: 1px solid var(--sinir); }
.ust .kap { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 56px; flex-wrap: wrap; }
.logo { display: inline-flex; align-items: center; gap: 8px; font-weight: 700; font-size: 1.1rem; color: var(--metin); text-decoration: none; }
.ust nav { display: flex; gap: 16px; flex-wrap: wrap; }
.ust nav a { color: var(--metin); padding: 10px 0; }

/* Ana sayfa: iki yarım */
.ikiye { display: grid; grid-template-columns: 1fr; min-height: calc(100vh - 57px); }
@media (min-width: 760px) { .ikiye { grid-template-columns: 1fr 1fr; } }
.yarim {
  display: flex; flex-direction: column; justify-content: center; gap: 14px;
  padding: 40px 24px; text-decoration: none; color: var(--metin); min-width: 0;
  border-bottom: 1px solid var(--sinir);
}
@media (min-width: 760px) { .yarim { padding: 48px clamp(24px, 5vw, 64px); border-bottom: 0; } .yarim + .yarim { border-left: 1px solid var(--sinir); } }
.yarim--cam { background: var(--zemin-2); }
.yarim h2 { margin: 0; font-size: clamp(1.7rem, 4vw, 2.4rem); line-height: 1.15; }
.yarim--ap h2 { color: var(--marka-metin); }
.yarim--cam h2 { color: var(--cam-metin); }
.yarim p { margin: 0; font-size: 1.1rem; color: var(--soluk); }
.yarim img { border-radius: 10px; border: 1px solid var(--sinir); }
.yarim .git { font-weight: 600; text-decoration: underline; }
.yarim--ap .git { color: var(--marka-metin); }
.yarim--cam .git { color: var(--cam-metin); }
.yarim:hover .git { text-decoration-thickness: 3px; }
.rozet { display: inline-block; font-size: .8rem; font-weight: 600; padding: 2px 8px; border: 1px solid currentColor; border-radius: 999px; vertical-align: middle; }

/* Ürün sayfası */
.bas { padding: 32px 0 8px; }
.bas h1 { margin: 0 0 8px; font-size: clamp(2rem, 6vw, 3rem); line-height: 1.1; }
.bas p { margin: 0; color: var(--soluk); font-size: 1.1rem; max-width: 60ch; }
.eylem { display: flex; flex-wrap: wrap; gap: 12px; margin: 20px 0 8px; }
.dugme {
  display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 10px 22px;
  border-radius: 10px; font-weight: 700; font-size: 1.05rem; text-decoration: none; border: 2px solid var(--vurgu);
}
.dugme--dolu { background: var(--vurgu); color: var(--on-vurgu); }
.dugme--bos { color: var(--vurgu-metin); background: transparent; }
.urun-ap { --vurgu: var(--marka); --vurgu-metin: var(--marka-metin); --on-vurgu: var(--on-marka); }
.urun-cam { --vurgu: var(--cam); --vurgu-metin: var(--cam-metin); --on-vurgu: var(--on-cam); }
.not { color: var(--soluk); font-size: .95rem; margin: 8px 0 0; }

/* Sekmeler — JS yokken tüm paneller alt alta görünür */
.sekmeler { margin: 28px 0 0; border-bottom: 1px solid var(--sinir); display: flex; gap: 4px; overflow-x: auto; }
.sekmeler a, .sekmeler button {
  font: inherit; font-weight: 600; color: var(--soluk); background: none; border: 0; border-bottom: 3px solid transparent;
  padding: 12px 14px; min-height: 44px; white-space: nowrap; cursor: pointer; text-decoration: none;
}
.sekmeler [aria-selected="true"] { color: var(--metin); border-bottom-color: var(--vurgu); }
.panel { padding: 20px 0 8px; }
.panel h2 { margin: 0 0 12px; font-size: 1.4rem; }
.js .panel h2 { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.panel ul { padding-left: 1.2em; }
.panel li { margin: 6px 0; }
.panel figure { margin: 16px 0; }
.panel figcaption { color: var(--soluk); font-size: .9rem; margin-top: 6px; }
.panel img { border-radius: 8px; border: 1px solid var(--sinir); }
.araclar { list-style: none; padding: 0 !important; display: grid; gap: 12px; }
.araclar li { border: 1px solid var(--sinir); border-radius: 10px; padding: 12px 14px; margin: 0; }
.araclar strong { display: block; }
.araclar span { color: var(--soluk); }
dl.sss dt { font-weight: 700; margin-top: 16px; }
dl.sss dd { margin: 4px 0 0; color: var(--metin); }

/* Video: tıklayınca yüklenir */
.videolar { display: grid; gap: 20px; grid-template-columns: 1fr; }
@media (min-width: 640px) { .videolar { grid-template-columns: 1fr 1fr; } }
.video { margin: 0; min-width: 0; }
.video a, .video iframe { display: block; position: relative; aspect-ratio: 16 / 9; width: 100%; border: 0; border-radius: 10px; overflow: hidden; background: #000; }
.video a img { width: 100%; height: 100%; object-fit: cover; border: 0; border-radius: 0; }
.video a::after {
  content: ""; position: absolute; left: 50%; top: 50%; width: 68px; height: 48px; transform: translate(-50%, -50%);
  border-radius: 12px; background: rgba(0, 0, 0, .75) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M8 5v14l11-7z' fill='%23fff'/%3E%3C/svg%3E") center / 30px no-repeat;
}
.video a:hover::after, .video a:focus-visible::after { background-color: #c00; }
.video figcaption { margin-top: 6px; font-weight: 600; }

/* Alt bilgi */
.alt { margin-top: 48px; border-top: 1px solid var(--sinir); background: var(--zemin-2); padding: 28px 0 96px; font-size: .95rem; }
.alt .kap { display: grid; gap: 20px; }
@media (min-width: 760px) { .alt .kap { grid-template-columns: 2fr 1fr 1fr; } }
.alt h2 { font-size: 1rem; margin: 0 0 8px; }
.alt p, .alt ul { margin: 0; padding: 0; list-style: none; color: var(--metin); }
.alt li { margin: 4px 0; }
.alt a { color: var(--metin); }
.ana .alt { margin-top: 0; }

/* WhatsApp */
.wa {
  position: fixed; right: 16px; bottom: 16px; z-index: 20; display: inline-flex; align-items: center; gap: 8px;
  min-height: 52px; min-width: 52px; padding: 0 18px 0 14px; border-radius: 999px;
  background: var(--marka); color: var(--on-marka); font-weight: 700; text-decoration: none; box-shadow: 0 4px 14px rgba(0, 0, 0, .25);
}
.wa svg { width: 26px; height: 26px; flex: none; }
@media (max-width: 420px) { .wa span { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); } .wa { padding: 0 13px; } }

.hata { padding: 64px 0; text-align: center; }
.hata h1 { font-size: 2.2rem; margin: 0 0 12px; }
.gizli { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }