/* ersinozkan.com — ana sayfa ve blog ortak stilleri */
:root {
  --bg: #0b0d10; --bg-2: #111419; --card: rgba(255,255,255,.035); --card-hover: rgba(255,255,255,.06);
  --text: #e9ecef; --muted: #8b93a1; --line: rgba(255,255,255,.08); --grid: rgba(255,255,255,.035);
  --accent: #8cc2ae; --accent-2: #5fd4e6; --glow-a: rgba(140,194,174,.18); --glow-b: rgba(95,212,230,.12);
  --nav: rgba(11,13,16,.7); --on-accent: #0b0d10;
  color-scheme: dark;
}
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --bg: #f7f8f6; --bg-2: #eef1ee; --card: rgba(255,255,255,.7); --card-hover: #fff;
    --text: #12161b; --muted: #5d6573; --line: rgba(15,20,25,.1); --grid: rgba(15,20,25,.05);
    --accent: #2f7a63; --accent-2: #0e8fa6; --glow-a: rgba(47,122,99,.14); --glow-b: rgba(14,143,166,.1);
    --nav: rgba(247,248,246,.75); --on-accent: #fff;
    color-scheme: light;
  }
}
:root[data-theme="light"] {
  --bg: #f7f8f6; --bg-2: #eef1ee; --card: rgba(255,255,255,.7); --card-hover: #fff;
  --text: #12161b; --muted: #5d6573; --line: rgba(15,20,25,.1); --grid: rgba(15,20,25,.05);
  --accent: #2f7a63; --accent-2: #0e8fa6; --glow-a: rgba(47,122,99,.14); --glow-b: rgba(14,143,166,.1);
  --nav: rgba(247,248,246,.75); --on-accent: #fff;
  color-scheme: light;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 400 17px/1.65 Inter, system-ui, sans-serif;
  -webkit-font-smoothing: antialiased; overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }
.mono { font-family: "JetBrains Mono", ui-monospace, monospace; }
.wrap { width: 100%; max-width: 1080px; margin: 0 auto; padding: 0 24px; }

/* Arka plan */
.bg { position: fixed; inset: 0; z-index: -1; pointer-events: none; overflow: hidden; }
.bg::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(var(--grid) 1px, transparent 1px), linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 40%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 40%, transparent 100%);
}
.blob { position: absolute; width: 620px; height: 620px; border-radius: 50%; filter: blur(80px); }
.blob.a { background: var(--glow-a); top: -220px; left: -160px; animation: drift 22s ease-in-out infinite alternate; }
.blob.b { background: var(--glow-b); top: 10%; right: -240px; animation: drift 28s ease-in-out infinite alternate-reverse; }
@keyframes drift { to { transform: translate(120px, 80px) scale(1.15); } }
.spot {
  position: fixed; inset: 0; z-index: -1; pointer-events: none; opacity: 0; transition: opacity .4s;
  background: radial-gradient(500px circle at var(--mx, 50%) var(--my, 50%), var(--glow-b), transparent 60%);
}
body.fare .spot { opacity: 1; }

/* Üst bar */
header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 10;
  border-bottom: 1px solid transparent; transition: background .3s, border-color .3s;
}
header.kaydi { background: var(--nav); border-color: var(--line); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); }
.nav { display: flex; align-items: center; justify-content: space-between; height: 68px; gap: 16px; }
.logo {
  width: 38px; height: 38px; border-radius: 11px; display: grid; place-items: center; flex: none;
  background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: var(--on-accent);
  font-weight: 800; font-size: 15px; letter-spacing: -.02em;
}
.nav-r { display: flex; align-items: center; gap: 4px; }
.nav-r a { font-size: 14px; color: var(--muted); padding: 8px 12px; border-radius: 8px; transition: color .2s, background .2s; }
.nav-r a:hover, .nav-r a[aria-current] { color: var(--text); background: var(--card); }
.tema {
  width: 38px; height: 38px; margin-left: 6px; display: grid; place-items: center; cursor: pointer; flex: none;
  border-radius: 10px; border: 1px solid var(--line); background: var(--card); color: var(--text);
}
.tema svg { width: 18px; height: 18px; }
.tema .gunes { display: none; }
:root[data-theme="light"] .tema .ay { display: none; }
:root[data-theme="light"] .tema .gunes { display: block; }
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) .tema .ay { display: none; }
  :root:not([data-theme="dark"]) .tema .gunes { display: block; }
}

/* Hero */
.hero { min-height: 100vh; min-height: 100svh; display: flex; align-items: center; padding: 120px 0 80px; }
.prompt { font-size: 14px; color: var(--accent); margin: 0 0 22px; display: flex; align-items: center; gap: 10px; }
.prompt .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); animation: ping 2.4s infinite; }
@keyframes ping { 0% { box-shadow: 0 0 0 0 var(--glow-a); } 70% { box-shadow: 0 0 0 10px transparent; } 100% { box-shadow: 0 0 0 0 transparent; } }
h1 {
  margin: 0; font-weight: 800; letter-spacing: -.045em; line-height: .98;
  font-size: clamp(52px, 11vw, 120px);
}
h1 .grad, .grad {
  background: linear-gradient(100deg, var(--text) 30%, var(--accent) 70%, var(--accent-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.typer { margin: 26px 0 0; font-size: clamp(17px, 2.6vw, 22px); color: var(--muted); min-height: 1.6em; }
.typer b { color: var(--text); font-weight: 500; }
.typer .imlec { display: inline-block; width: .55em; height: 1.1em; vertical-align: -.18em; background: var(--accent); margin-left: 2px; animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.lead { max-width: 560px; color: var(--muted); margin: 18px 0 38px; font-size: 18px; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; }
.btn {
  display: inline-flex; align-items: center; gap: 10px; padding: 13px 22px; border-radius: 12px;
  font-weight: 600; font-size: 15px; transition: transform .2s, box-shadow .2s, background .2s, border-color .2s;
}
.btn svg { width: 16px; height: 16px; transition: transform .2s; }
.btn:hover svg { transform: translateX(3px); }
.btn.dolu { background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: var(--on-accent); }
.btn.dolu:hover { transform: translateY(-2px); box-shadow: 0 10px 30px -10px var(--accent); }
.btn.bos { border: 1px solid var(--line); background: var(--card); }
.btn.bos:hover { border-color: var(--accent); }
.kaydir { margin-top: 72px; font-size: 12px; color: var(--muted); letter-spacing: .12em; text-transform: uppercase; display: flex; align-items: center; gap: 12px; }
.kaydir::before { content: ""; width: 40px; height: 1px; background: var(--line); }

/* Bölümler */
section.blok { padding: 110px 0; }
.etiket { font-size: 13px; color: var(--accent); margin: 0 0 14px; letter-spacing: .04em; }
h2 { margin: 0 0 22px; font-size: clamp(32px, 5vw, 48px); font-weight: 800; letter-spacing: -.035em; line-height: 1.08; }
.alt { color: var(--muted); max-width: 620px; margin: 0; font-size: 18px; }
.baslik-satir { display: flex; justify-content: space-between; align-items: end; gap: 24px; flex-wrap: wrap; }
.tumu { font-size: 14px; color: var(--accent); display: inline-flex; align-items: center; gap: 8px; }
.tumu svg { width: 15px; height: 15px; transition: transform .2s; }
.tumu:hover svg { transform: translateX(3px); }

.hakkimda { display: grid; grid-template-columns: 1.1fr 1fr; gap: 56px; align-items: start; }
.hakkimda p.alt + p.alt { margin-top: 16px; }
.odaklar { display: grid; gap: 14px; }
.kart {
  position: relative; border: 1px solid var(--line); background: var(--card); border-radius: 18px;
  transition: transform .25s, background .25s, border-color .25s;
}
.odak { display: flex; gap: 18px; padding: 22px; }
.odak:hover { background: var(--card-hover); transform: translateX(4px); }
.ikon {
  flex: none; width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center;
  background: var(--glow-a); color: var(--accent);
}
.ikon svg { width: 22px; height: 22px; }
.odak h3 { margin: 0 0 4px; font-size: 17px; font-weight: 600; }
.odak p { margin: 0; color: var(--muted); font-size: 15px; line-height: 1.55; }

.projeler { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; margin-top: 48px; }
.proje { padding: 28px; display: flex; flex-direction: column; overflow: hidden; }
.proje::before, .yazi-kart::before {
  content: ""; position: absolute; inset: -1px; border-radius: inherit; padding: 1px; pointer-events: none;
  background: linear-gradient(135deg, var(--accent), transparent 40%, transparent 60%, var(--accent-2));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude; opacity: 0; transition: opacity .3s;
}
.proje:hover, .yazi-kart:hover { transform: translateY(-4px); background: var(--card-hover); }
.proje:hover::before, .yazi-kart:hover::before { opacity: 1; }
.proje-ust { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.proje-no { font-size: 13px; color: var(--muted); }
.durum { font-size: 12px; padding: 4px 10px; border-radius: 99px; border: 1px solid var(--line); color: var(--muted); }
.durum.aktif { color: var(--accent); border-color: var(--glow-a); background: var(--glow-a); }
.proje h3 { margin: 0 0 10px; font-size: 22px; letter-spacing: -.02em; }
.proje p { margin: 0 0 22px; color: var(--muted); font-size: 15px; flex: 1; }
.etiketler { display: flex; flex-wrap: wrap; gap: 8px; }
.etiketler span, .etiketler a { font-size: 12px; padding: 5px 10px; border-radius: 8px; background: var(--bg-2); color: var(--muted); border: 1px solid var(--line); }
.etiketler a:hover { color: var(--accent); border-color: var(--accent); }
.proje .ok { position: absolute; top: 26px; right: 26px; width: 20px; height: 20px; color: var(--muted); opacity: 0; transform: translate(-6px, 6px); transition: .25s; }
.proje:hover .ok { opacity: 1; transform: none; color: var(--accent); }
.proje:hover .durum { opacity: 0; }

/* Yazı kartları (ana sayfa ve blog listesi) */
.yazilar { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 48px; }
.yazilar.liste { grid-template-columns: 1fr; gap: 14px; }
.yazi-kart { padding: 26px; display: flex; flex-direction: column; gap: 10px; overflow: hidden; }
.yazi-kart .meta { font-size: 12.5px; color: var(--muted); display: flex; gap: 10px; flex-wrap: wrap; }
.yazi-kart h3 { margin: 0; font-size: 20px; line-height: 1.3; letter-spacing: -.02em; }
.yazi-kart p { margin: 0; color: var(--muted); font-size: 15px; line-height: 1.6; flex: 1; }
.yazilar.liste .yazi-kart { padding: 26px 30px; }
.yazilar.liste .yazi-kart h3 { font-size: 23px; }
.bos-not { color: var(--muted); margin-top: 32px; }

.iletisim { text-align: center; padding: 72px 32px; overflow: hidden; }
.iletisim::after {
  content: ""; position: absolute; left: 50%; top: 0; width: 70%; height: 1px; transform: translateX(-50%);
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
}
.iletisim h2 { font-size: clamp(34px, 6vw, 60px); }
.iletisim .alt { margin: 0 auto 34px; }
.iletisim .cta { justify-content: center; }
.sosyal { display: flex; justify-content: center; gap: 10px; margin-top: 28px; }
.sosyal a {
  width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center;
  border: 1px solid var(--line); background: var(--card); color: var(--muted); transition: .2s;
}
.sosyal a:hover { color: var(--accent); border-color: var(--accent); transform: translateY(-2px); }
.sosyal svg { width: 19px; height: 19px; }

footer { border-top: 1px solid var(--line); padding: 28px 0; margin-top: 40px; }
footer .wrap { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; font-size: 14px; color: var(--muted); }
footer nav { display: flex; gap: 18px; }
footer a:hover { color: var(--text); }

/* Blog sayfaları */
.sayfa-bas { padding: 150px 0 10px; }
.sayfa-bas h1 { font-size: clamp(44px, 8vw, 84px); }
.sayfa-bas .alt { margin-top: 20px; }
.blog-govde { padding: 30px 0 80px; }
.yazi { max-width: 740px; margin: 0 auto; padding: 140px 0 60px; }
.geri { font-size: 13px; color: var(--muted); display: inline-flex; align-items: center; gap: 8px; margin-bottom: 34px; }
.geri:hover { color: var(--accent); }
.geri svg { width: 14px; height: 14px; }
.yazi h1 { font-size: clamp(36px, 6vw, 56px); line-height: 1.08; letter-spacing: -.035em; }
.yazi .meta { margin: 22px 0 0; font-size: 13px; color: var(--muted); display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }
.yazi .etiketler { margin-top: 18px; }
.yazi-ayrac { height: 1px; margin: 40px 0; background: linear-gradient(90deg, var(--accent), transparent); opacity: .5; }

.icerik { font-size: 18px; line-height: 1.8; }
.icerik > :first-child { margin-top: 0; }
.icerik p, .icerik ul, .icerik ol, .icerik blockquote, .icerik pre { margin: 0 0 24px; }
.icerik h2 { font-size: 30px; margin: 52px 0 16px; letter-spacing: -.025em; line-height: 1.2; }
.icerik h3 { font-size: 22px; margin: 40px 0 12px; letter-spacing: -.015em; line-height: 1.3; }
.icerik h4 { font-size: 18px; margin: 32px 0 10px; }
.icerik h2 a.capa, .icerik h3 a.capa { color: var(--muted); opacity: 0; margin-left: 8px; font-weight: 400; }
.icerik h2:hover a.capa, .icerik h3:hover a.capa { opacity: 1; }
.icerik a:not(.capa) { color: var(--accent); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; }
.icerik a:not(.capa):hover { text-decoration-thickness: 2px; }
.icerik strong { color: var(--text); font-weight: 600; }
.icerik ul, .icerik ol { padding-left: 24px; }
.icerik li { margin: 6px 0; }
.icerik li::marker { color: var(--accent); }
.icerik blockquote { border-left: 3px solid var(--accent); padding: 4px 0 4px 20px; color: var(--muted); font-style: italic; }
.icerik blockquote p:last-child { margin-bottom: 0; }
.icerik code { font-family: "JetBrains Mono", ui-monospace, monospace; font-size: .86em; background: var(--bg-2); border: 1px solid var(--line); padding: 2px 6px; border-radius: 6px; }
.icerik pre { background: var(--bg-2); border: 1px solid var(--line); border-radius: 14px; padding: 18px 20px; overflow-x: auto; line-height: 1.6; position: relative; }
.icerik pre code { background: none; border: 0; padding: 0; font-size: 14px; }
.icerik pre[data-dil]::before { content: attr(data-dil); position: absolute; top: 8px; right: 12px; font: 11px "JetBrains Mono", monospace; color: var(--muted); text-transform: lowercase; }
.icerik img { max-width: 100%; height: auto; border-radius: 14px; border: 1px solid var(--line); display: block; margin: 0 auto; }
.icerik hr { border: 0; height: 1px; background: var(--line); margin: 44px 0; }
.yazi-son { margin-top: 56px; padding-top: 28px; border-top: 1px solid var(--line); display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: 15px; color: var(--muted); }
.yazi-son a { color: var(--accent); }

/* Görünme animasyonu */
.gor { opacity: 0; transform: translateY(24px); transition: opacity .8s ease, transform .8s ease; }
.gor.acik { opacity: 1; transform: none; }
.gecikme-1 { transition-delay: .1s; } .gecikme-2 { transition-delay: .2s; } .gecikme-3 { transition-delay: .3s; }

@media (max-width: 900px) {
  .yazilar { grid-template-columns: 1fr; }
}
@media (max-width: 820px) {
  .hakkimda { grid-template-columns: 1fr; gap: 36px; }
  .projeler { grid-template-columns: 1fr; }
  section.blok { padding: 80px 0; }
}
@media (max-width: 560px) {
  .wrap { padding: 0 16px; }
  .nav { gap: 8px; }
  .nav-r { gap: 0; }
  .nav-r a { padding: 8px 7px; font-size: 13px; }
  .nav-r a.genis { display: none; }
  .proje, .yazi-kart, .yazilar.liste .yazi-kart { padding: 22px; }
  .iletisim { padding: 56px 20px; }
  .blob { width: 380px; height: 380px; }
  .icerik { font-size: 17px; }
  .yazi { padding-top: 120px; }
  .sayfa-bas { padding-top: 120px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  .gor { opacity: 1; transform: none; }
  .spot { display: none; }
}