/* EntCaster tanitim sitesi - urunle ayni marka renkleri; acik/koyu tema sistem ayarina gore */
:root{--bg:#0a0c10;--bg2:#0f1218;--kart:#131720;--kart2:#181d28;--cizgi:#252b39;--fg:#eceef4;--fg2:#c4cad8;--soluk:#8a93a6;
  --acc:#6d7cff;--acc2:#8b5cf6;--acc-y:rgba(109,124,255,.14);--kirmizi:#ff5d63;--yesil:#34d399;--golge:0 20px 60px rgba(0,0,0,.45);--r:16px;
  color-scheme:dark}
@media (prefers-color-scheme:light){:root{--bg:#f6f7fb;--bg2:#eef0f6;--kart:#fff;--kart2:#f8f9fc;--cizgi:#e2e6ef;--fg:#141823;--fg2:#3b4356;--soluk:#667086;
  --acc-y:rgba(109,124,255,.1);--kirmizi:#d42a33;--yesil:#0f7a4f;--golge:0 20px 50px rgba(20,24,40,.12);color-scheme:light}}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit}
[hidden]{display:none!important}
img{max-width:100%}

/* Ust cubuk */
.ust{position:sticky;top:0;z-index:10;display:flex;align-items:center;gap:24px;padding:12px max(20px,calc((100% - 1160px)/2));
  background:color-mix(in srgb,var(--bg) 82%,transparent);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--cizgi)}
.marka{display:flex;align-items:center;gap:10px;text-decoration:none;font-size:19px}
.marka img{border-radius:9px}.marka b{font-weight:800}
.menu{display:flex;gap:4px;flex:1}
.menu a{text-decoration:none;color:var(--fg2);font-weight:600;font-size:14.5px;padding:8px 12px;border-radius:9px}
.menu a:hover{background:var(--kart2);color:var(--fg)}

/* Dugmeler */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 20px;border-radius:12px;border:1px solid var(--cizgi);
  background:var(--kart);color:var(--fg);font-weight:700;font-size:15px;text-decoration:none;cursor:pointer;transition:transform .15s,box-shadow .15s,background .15s}
.btn:hover{transform:translateY(-1px)}
.btn.birincil{background:linear-gradient(135deg,var(--acc),var(--acc2));border-color:transparent;color:#fff;box-shadow:0 8px 24px rgba(109,124,255,.32)}
.btn.birincil:hover{box-shadow:0 12px 30px rgba(109,124,255,.42)}
.btn.kucuk{padding:9px 16px;font-size:14px}
.btn.buyuk{padding:16px 28px;font-size:17px}

/* Kahraman */
main{padding:0 20px;overflow-x:clip}
.kahraman{max-width:1160px;margin:0 auto;display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:center;padding:72px 0 64px;position:relative}
.kahraman::before{content:"";position:absolute;inset:-120px -40% auto auto;width:720px;height:720px;z-index:-1;
  background:radial-gradient(closest-side,rgba(109,124,255,.22),transparent 70%)}
.ust-etiket{display:inline-block;margin:0 0 16px;padding:5px 12px;border-radius:999px;background:var(--acc-y);color:var(--acc);font-weight:700;font-size:13px;letter-spacing:.02em}
h1{font-size:clamp(34px,5vw,56px);line-height:1.08;letter-spacing:-.025em;margin:0 0 20px}
.vurgu{background:linear-gradient(135deg,var(--acc),var(--acc2));-webkit-background-clip:text;background-clip:text;color:transparent}
.giris{font-size:18px;color:var(--fg2);margin:0 0 28px;max-width:560px}
.dugmeler{display:flex;gap:12px;flex-wrap:wrap}
.rozetler{list-style:none;padding:0;margin:28px 0 0;display:flex;gap:10px 22px;flex-wrap:wrap;color:var(--soluk);font-size:14px;font-weight:600}
.rozetler li::before{content:"✓";color:var(--yesil);margin-right:7px;font-weight:800}

/* Urun gorseli (CSS ile) */
.ekran{background:var(--kart);border:1px solid var(--cizgi);border-radius:18px;box-shadow:var(--golge);overflow:hidden;transform:perspective(1400px) rotateY(-6deg) rotateX(2deg)}
.ekran-ust{display:flex;gap:6px;padding:11px 14px;border-bottom:1px solid var(--cizgi);background:var(--kart2)}
.ekran-ust span{width:10px;height:10px;border-radius:50%;background:var(--cizgi)}
.ekran-icerik{display:grid;grid-template-columns:1.5fr 1fr}
.video{position:relative;aspect-ratio:16/10;background:radial-gradient(circle at 30% 35%,#2b3570,#0d1020 70%);display:grid;place-items:center}
.video .oynat{width:30%;fill:none;stroke:rgba(255,255,255,.85);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.video .oynat .dolu{fill:rgba(255,255,255,.85)}
.canli{position:absolute;top:10px;left:10px;background:#e5252c;color:#fff;font-size:11px;font-weight:800;padding:3px 8px;border-radius:6px}
.izleyici{position:absolute;top:10px;right:10px;background:rgba(0,0,0,.5);color:#fff;font-size:11px;font-weight:700;padding:3px 8px;border-radius:6px}
.altyazi{position:absolute;bottom:10px;left:50%;transform:translateX(-50%);width:max-content;max-width:90%;background:rgba(0,0,0,.72);color:#fff;font-size:12px;padding:4px 10px;border-radius:6px}
.akis{padding:10px 12px;font-size:11.5px;border-left:1px solid var(--cizgi);color:var(--fg2)}
.akis p{margin:0 0 7px;line-height:1.4}
.akis .akis-baslik{font-weight:800;color:var(--fg);font-size:12px}
.akis i{font-style:normal;color:var(--soluk);font-variant-numeric:tabular-nums;margin-right:6px;font-size:10.5px}
.akis b{margin-right:5px;color:var(--fg)}
.akis em{display:block;color:var(--soluk);font-size:10.5px;margin-left:44px}
.akis .studyo b{background:#e5252c;color:#fff;padding:0 5px;border-radius:4px;font-size:10px}
.akis .olay{color:var(--soluk);font-style:italic}

/* Bolumler */
.bolum{max-width:1160px;margin:0 auto;padding:72px 0}
.bolum.dar{max-width:780px}
h2{font-size:clamp(28px,3.6vw,40px);letter-spacing:-.02em;line-height:1.15;margin:0 0 14px;text-align:center}
.bolum-giris{color:var(--fg2);font-size:17px;max-width:720px;margin:0 auto 40px;text-align:center}
.kartlar{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(260px,100%),1fr));gap:16px}
.kart{background:var(--kart);border:1px solid var(--cizgi);border-radius:var(--r);padding:24px;transition:border-color .2s,transform .2s}
.kart:hover{border-color:color-mix(in srgb,var(--acc) 50%,var(--cizgi));transform:translateY(-2px)}
.kart h3{margin:14px 0 8px;font-size:18px}
.kart p{margin:0;color:var(--fg2);font-size:15px}
.ikon{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;background:var(--acc-y)}
.ikon svg{width:24px;height:24px;fill:none;stroke:var(--acc);stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

.adimlar{list-style:none;counter-reset:a;padding:0;margin:40px 0 0;display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.adimlar li{counter-increment:a;background:var(--kart);border:1px solid var(--cizgi);border-radius:var(--r);padding:24px 24px 24px 76px;position:relative}
.adimlar li::before{content:counter(a);position:absolute;left:22px;top:22px;width:38px;height:38px;border-radius:50%;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--acc),var(--acc2));color:#fff;font-weight:800}
.adimlar b{display:block;font-size:17px;margin-bottom:4px}.adimlar span{color:var(--fg2);font-size:15px}

/* Fiyatlar */
.sekme{display:flex;width:max-content;max-width:100%;margin:0 auto 22px;padding:4px;background:var(--kart);border:1px solid var(--cizgi);border-radius:14px}
.sekme button{border:0;background:none;color:var(--fg2);font:inherit;font-weight:700;font-size:15px;padding:10px 20px;border-radius:10px;cursor:pointer}
.sekme button[aria-selected="true"]{background:linear-gradient(135deg,var(--acc),var(--acc2));color:#fff}
.tur-aciklama{text-align:center;color:var(--soluk);margin:0 auto 28px;max-width:680px}
.plan-izgara{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;align-items:stretch}
.plan-izgara.bes{grid-template-columns:repeat(5,1fr)}
.plan{position:relative;background:var(--kart);border:1px solid var(--cizgi);border-radius:var(--r);padding:26px 22px}
.plan h3{margin:0;font-size:17px;color:var(--fg2)}
.fiyat{margin:10px 0 16px;display:flex;align-items:baseline;gap:6px;flex-wrap:wrap}
.fiyat b{font-size:42px;letter-spacing:-.03em;line-height:1}.fiyat span{color:var(--soluk);font-size:14px;font-weight:600}
.plan ul{list-style:none;padding:0;margin:0;display:grid;gap:9px;font-size:14.5px;color:var(--fg2)}
.plan li::before{content:"✓";color:var(--acc);font-weight:800;margin-right:8px}
.plan.one-cikan{border:1.5px solid var(--acc);box-shadow:0 14px 40px rgba(109,124,255,.22);background:linear-gradient(180deg,var(--acc-y),var(--kart) 45%)}
.plan .etiket{position:absolute;top:-12px;left:22px;margin:0;background:linear-gradient(135deg,var(--acc),var(--acc2));color:#fff;font-size:11.5px;font-weight:800;padding:4px 10px;border-radius:999px}
.ek{margin-top:16px;background:var(--kart);border:1px solid var(--cizgi);border-radius:var(--r);padding:22px 24px;display:flex;gap:16px}
.ek h3{margin:0 0 6px;font-size:17px}.ek p{margin:0;color:var(--fg2);font-size:15px}
.not{color:var(--soluk);font-size:14px;margin:16px 0 0}
.not.orta{text-align:center;margin-top:28px}

/* SSS */
details{background:var(--kart);border:1px solid var(--cizgi);border-radius:14px;margin-bottom:10px;padding:0 20px}
summary{cursor:pointer;font-weight:700;padding:18px 0;list-style:none;display:flex;justify-content:space-between;gap:12px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";color:var(--acc);font-size:22px;line-height:1;transition:transform .2s}
details[open] summary::after{transform:rotate(45deg)}
details p{margin:0 0 18px;color:var(--fg2)}

/* Iletisim */
.iletisim{text-align:center;margin:40px auto 80px;padding:56px 24px;max-width:900px;border-radius:24px;border:1px solid var(--cizgi);
  background:radial-gradient(circle at 50% 0,rgba(109,124,255,.2),transparent 70%),var(--kart)}
.iletisim p{color:var(--fg2);font-size:17px;margin:0 0 26px}

.alt{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;padding:28px max(20px,calc((100% - 1160px)/2));border-top:1px solid var(--cizgi);color:var(--soluk);font-size:14px}
.alt p{margin:0}

@media (max-width:1000px){.kahraman{grid-template-columns:1fr;padding-top:48px}.ekran{transform:none}
  .plan-izgara,.plan-izgara.bes{grid-template-columns:repeat(2,1fr)}.adimlar{grid-template-columns:1fr}}
@media (max-width:700px){.menu{display:none}.ust{gap:12px;justify-content:space-between}.bolum{padding:52px 0}
  .plan-izgara,.plan-izgara.bes{grid-template-columns:1fr}.ekran-icerik{grid-template-columns:1fr}.akis{border-left:0;border-top:1px solid var(--cizgi)}
  .giris{font-size:16.5px}.sekme button{padding:10px 14px;font-size:14px}}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}