/* Liquid-glass kişisel CV — koyu varsayılan, açık tema seçilebilir */
:root {
  --bg: #000;
  --fg: #f5f5f7;
  --fg-2: #a1a1a6;
  --fg-3: #86868b;
  --accent: #f5f5f7;
  --accent-ink: #1d1d1f;
  --glass: rgba(255,255,255,.07);
  --glass-edge: rgba(255,255,255,.18);
  --glass-edge-2: rgba(255,255,255,.06);
  --glass-shadow: 0 28px 70px -28px rgba(0,0,0,.75);
  --hairline: rgba(255,255,255,.08);
  --grain: .07;
  --blob-a: .55;
  --float-fill: rgba(28,28,30,.88);
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Inter", system-ui, sans-serif;
  --mono: ui-monospace, "SF Mono", "Geist Mono", Menlo, monospace;
  --r-lg: 24px; --r-md: 16px;
  --col: 1120px;
  --gutter: clamp(16px, 4vw, 40px);
  --spring: cubic-bezier(.22, 1, .36, 1);
  color-scheme: dark;
}
:root[data-theme="light"] {
  --bg: #f5f5f7;
  --fg: #1d1d1f;
  --fg-2: #6e6e73;
  --fg-3: #86868b;
  --accent: #1d1d1f;
  --accent-ink: #fff;
  --glass: rgba(255,255,255,.55);
  --glass-edge: rgba(255,255,255,.95);
  --glass-edge-2: rgba(29,29,31,.07);
  --glass-shadow: 0 20px 50px -22px rgba(29,29,31,.22);
  --hairline: rgba(29,29,31,.08);
  --grain: .035;
  --blob-a: .85;
  --float-fill: rgba(255,255,255,.9);
  color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.55 var(--font); -webkit-font-smoothing: antialiased; overflow-x: hidden; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
h1, h2, h3, p { margin: 0; }
h1, h2, h3 { letter-spacing: -.02em; text-wrap: balance; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 8px; }
::selection { background: var(--accent); color: var(--accent-ink); }
.mono { font-family: var(--mono); font-size: .85em; color: var(--fg-3); }

/* arka plan */
#aurora { position: fixed; inset: 0; width: 100%; height: 100%; z-index: -2; pointer-events: none; }
#net { position: fixed; inset: 0; width: 100%; height: 100%; z-index: -1; pointer-events: none; }
.grain {
  position: fixed; inset: 0; z-index: -1; pointer-events: none; opacity: var(--grain);
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}

/* cam malzeme */
.glass {
  position: relative; background: var(--glass);
  -webkit-backdrop-filter: blur(28px) saturate(1.7); backdrop-filter: blur(28px) saturate(1.7);
  border-radius: var(--r, var(--r-lg));
  box-shadow: inset 0 1px 0 var(--glass-edge), inset 0 -1px 0 var(--glass-edge-2), 0 0 0 1px var(--glass-edge-2), var(--glass-shadow);
}

/* giriş */
.intro { position: fixed; inset: 0; z-index: 100; background: #000; display: grid; place-items: center; transition: opacity .8s ease .2s, visibility 0s 1s; }
.intro-h1 { display: flex; flex-direction: column; align-items: center; gap: .1em; font-size: clamp(2.4rem, 8vw, 5.5rem); font-weight: 700; color: #f5f5f7; text-align: center; }
.intro-h1 .hi { font-size: .35em; font-weight: 500; color: #a1a1a6; opacity: 0; animation: rise .8s var(--spring) .1s forwards; }
.intro-h1 .nm { opacity: 0; animation: rise .9s var(--spring) .35s forwards; }
html:not(.intro-on) .intro { opacity: 0; visibility: hidden; pointer-events: none; }
@keyframes rise { from { opacity: 0; transform: translateY(18px); filter: blur(8px); } to { opacity: 1; transform: none; filter: none; } }
html.intro-on { overflow: hidden; }

/* dock */
.dock {
  --r: 999px; position: fixed; z-index: 50; top: max(14px, env(safe-area-inset-top)); left: 50%; transform: translateX(-50%);
  display: flex; align-items: center; gap: 6px; padding: 6px;
}
.dock-nav { position: relative; display: flex; }
.dock-nav a { position: relative; z-index: 1; padding: 8px 14px; font-size: 14px; font-weight: 500; color: var(--fg-2); border-radius: 999px; transition: color .25s; white-space: nowrap; }
.dock-nav a:hover, .dock-nav a.active { color: var(--fg); }
.dock-ind { position: absolute; top: 0; bottom: 0; left: 0; width: 0; border-radius: 999px; background: var(--glass); box-shadow: inset 0 1px 0 var(--glass-edge), 0 0 0 1px var(--glass-edge-2); transition: transform .5s var(--spring), width .5s var(--spring), opacity .3s; opacity: 0; }
.dock-sep { width: 1px; height: 18px; background: var(--hairline); }
.dock-btn { width: 36px; height: 36px; display: grid; place-items: center; border-radius: 50%; color: var(--fg-2); transition: color .2s, background .2s; }
.dock-btn:hover { color: var(--fg); background: var(--glass); }
.i-sun { display: none; } :root[data-theme="light"] .i-sun { display: block; } :root[data-theme="light"] .i-moon { display: none; }

/* yerleşim */
.wrap { max-width: var(--col); margin: 0 auto; padding: 0 var(--gutter) 60px; }
.section { padding-top: clamp(48px, 8vw, 96px); scroll-margin-top: 70px; }
.sec-head { display: flex; align-items: baseline; justify-content: space-between; margin: 0 4px 18px; }
.sec-head h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 700; }
.meta { font-size: 14px; color: var(--fg-3); }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 0 28px; align-items: start; }

/* hero */
.hero { min-height: 100svh; display: grid; grid-template-columns: 1.2fr 1fr; gap: 40px; align-items: center; padding-top: 90px; }
.eyebrow { display: inline-block; font-size: 13px; letter-spacing: .08em; text-transform: uppercase; color: var(--fg-3); margin-bottom: 18px; }
.hero h1 { display: flex; flex-direction: column; font-size: clamp(2.8rem, 7vw, 5.4rem); line-height: 1.02; font-weight: 750; }
.hero h1 .hi { font-size: .38em; font-weight: 500; color: var(--fg-2); margin-bottom: .3em; }
.grad { background: linear-gradient(110deg, var(--fg) 20%, #8ab4ff 50%, #c79bff 70%, var(--fg) 90%); background-size: 220% 100%; -webkit-background-clip: text; background-clip: text; color: transparent; animation: sheen 7s ease-in-out infinite alternate; }
@keyframes sheen { to { background-position: 100% 0; } }
.role { display: flex; flex-direction: column; gap: 2px; margin-top: 22px; font-size: 1.1rem; color: var(--fg-2); }
.role strong { color: var(--fg); font-weight: 600; }
.chips { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.chip { --r: 999px; display: inline-flex; align-items: center; gap: 8px; padding: 9px 16px; font-size: 14px; transition: transform .3s var(--spring); }
button.chip:hover { transform: translateY(-2px); }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 22px; border-radius: 999px; background: var(--accent); color: var(--accent-ink); font-weight: 600; font-size: 15px; transition: transform .3s var(--spring), opacity .2s; }
.btn:hover { transform: translateY(-2px); opacity: .92; }

.hero-visual { position: relative; justify-self: center; width: min(100%, 400px); aspect-ratio: 1; }
.portrait { --r: 36px; width: 100%; height: 100%; overflow: hidden; display: grid; place-items: center; }
.portrait img { width: 100%; height: 100%; object-fit: cover; }
.initials { font-size: clamp(4rem, 12vw, 7rem); font-weight: 800; letter-spacing: -.04em; color: var(--fg-2); }
.float { --r: 20px; position: absolute; display: flex; align-items: center; gap: 12px; padding: 10px 16px 10px 10px; background: var(--glass); animation: bob 6s ease-in-out infinite; }
.float div { display: flex; flex-direction: column; line-height: 1.25; font-size: 13px; }
.float b { font-weight: 600; } .float span:not(.logo-tile) { color: var(--fg-3); }
.float-1 { left: -8%; top: 12%; } .float-2 { right: -6%; bottom: 10%; animation-delay: -3s; }
@keyframes bob { 50% { transform: translateY(-8px); } }

/* hakkımda */
.about { padding: clamp(22px, 4vw, 40px); font-size: clamp(1.1rem, 2vw, 1.45rem); line-height: 1.5; color: var(--fg-2); }
.about em { font-style: normal; color: var(--fg); font-weight: 600; }

/* timeline */
.timeline { padding: 8px; }
.tl-row { position: relative; display: grid; grid-template-columns: 44px 1fr auto; gap: 4px 14px; align-items: center; padding: 14px; border-radius: 18px; cursor: pointer; transition: background .25s; }
.tl-row:hover { background: var(--glass); }
.tl-row + .tl-row { margin-top: 2px; }
.logo-tile { width: 44px; height: 44px; display: grid; place-items: center; border-radius: 12px; background: var(--glass); box-shadow: inset 0 1px 0 var(--glass-edge), 0 0 0 1px var(--glass-edge-2); font-weight: 700; color: var(--fg-2); flex: none; }
.tl-row h3 { font-size: 1rem; font-weight: 600; }
.sub { font-size: 14px; color: var(--fg-3); }
.date { text-align: right; font-size: 13px; color: var(--fg-3); line-height: 1.3; }
.date .now { color: #34c759; font-weight: 600; }
.desc { grid-column: 2 / -1; display: grid; grid-template-rows: 0fr; transition: grid-template-rows .45s var(--spring); }
.desc > * { overflow: hidden; margin: 0; padding: 0; font-size: 14.5px; color: var(--fg-2); }
.desc ul { list-style: none; display: flex; flex-direction: column; gap: 6px; }
.desc li { position: relative; padding-left: 14px; }
.desc li::before { content: ""; position: absolute; left: 0; top: .6em; width: 5px; height: 5px; border-radius: 50%; background: var(--fg-3); }
.tl-row[aria-expanded="true"] .desc { grid-template-rows: 1fr; margin-top: 8px; }

/* projeler */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 18px; }
.card { display: flex; flex-direction: column; gap: 10px; padding: 24px; transition: transform .4s var(--spring); }
.card:hover { transform: translateY(-6px); }
.card h3 { font-size: 1.25rem; font-weight: 650; }
.card p { color: var(--fg-2); font-size: 15px; flex: 1; }
.tag { align-self: flex-start; padding: 3px 10px; border-radius: 999px; font-size: 12px; font-weight: 600; background: var(--glass); box-shadow: 0 0 0 1px var(--glass-edge-2); color: var(--fg-2); }

/* linkler */
.links { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 14px; }
.link { --r: 18px; display: flex; justify-content: space-between; align-items: center; padding: 20px 22px; font-weight: 600; transition: transform .35s var(--spring); }
.link i { font-style: normal; color: var(--fg-3); transition: transform .3s var(--spring), color .2s; }
.link:hover { transform: translateY(-3px); } .link:hover i { transform: translate(3px, -3px); color: var(--fg); }
.foot { margin-top: 70px; text-align: center; font-size: 13px; color: var(--fg-3); }

/* scroll reveal */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .8s ease, transform .9s var(--spring); }
.reveal.in { opacity: 1; transform: none; }

/* mobil */
@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; padding-top: 110px; gap: 50px; text-align: left; }
  .hero-visual { width: min(80%, 340px); justify-self: start; margin-left: 8%; }
  .two-col { grid-template-columns: 1fr; }
}
@media (max-width: 520px) {
  .dock-nav a { padding: 8px 9px; font-size: 13px; }
  .dock-nav a[href="#education"], .dock-nav a[href="#projects"] { display: none; }
  .float-1 { left: -4%; } .float-2 { right: -4%; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}

/* sertifikalar */
.certs { list-style: none; margin: 0; padding: 10px 22px; }
.certs li { display: grid; grid-template-columns: 1fr auto; gap: 0 12px; padding: 12px 0; }
.certs li + li { border-top: 1px solid var(--hairline); }
.certs b { font-weight: 600; } .certs span { grid-column: 1; font-size: 14px; color: var(--fg-3); }
.certs time { grid-row: 1; grid-column: 2; font-size: 13px; color: var(--fg-3); font-family: var(--mono); }
#certs { padding-top: 40px; }

/* tech stack şeridi */
.marquee { --r: 28px; overflow: hidden; padding: 18px 0; -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); }
.track { display: flex; gap: 14px; width: max-content; animation: scroll 55s linear infinite; }
.marquee:hover .track { animation-play-state: paused; }
@keyframes scroll { to { transform: translateX(calc(-50% - 7px)); } }
.tech { --r: 18px; display: flex; flex-direction: column; align-items: center; gap: 10px; width: 108px; padding: 16px 8px 12px; transition: transform .35s var(--spring); }
.tech:hover { transform: translateY(-4px) scale(1.03); }
.tech img, .tech .glyph { width: 42px; height: 42px; object-fit: contain; }
.tech img.mono { filter: invert(1); }
:root[data-theme="light"] .tech img.mono { filter: none; }
.tech .glyph { display: grid; place-items: center; border-radius: 12px; font: 700 15px var(--mono); letter-spacing: -.02em; color: var(--fg-2); background: var(--glass); box-shadow: inset 0 1px 0 var(--glass-edge), 0 0 0 1px var(--glass-edge-2); }
.tech span { font: 11.5px var(--mono); color: var(--fg-2); text-align: center; white-space: nowrap; }
@media (prefers-reduced-motion: reduce) { .track { animation: none; } .marquee { overflow-x: auto; } }

.logo-tile { overflow: hidden; }
.logo-tile img { width: 100%; height: 100%; object-fit: cover; }
.logo-tile.fit { background: #fff; padding: 4px; }
.logo-tile.fit img { object-fit: contain; }

/* tek şirket, birden çok rol */
.roles { display: flex; flex-direction: column; gap: 14px; }
.role h4 { display: flex; justify-content: space-between; gap: 12px; margin: 0 0 6px; font-size: 14px; font-weight: 600; color: var(--fg); letter-spacing: 0; }
.role h4 time { font: 400 12px var(--mono); color: var(--fg-3); white-space: nowrap; }
.role ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 6px; }

.certs li.has-logo { grid-template-columns: 44px 1fr auto; gap: 0 14px; align-items: center; }
.certs li.has-logo .logo-tile { grid-row: 1 / span 2; grid-column: 1; }
.certs li.has-logo b, .certs li.has-logo span:not(.logo-tile) { grid-column: 2; }
.certs li.has-logo time { grid-column: 3; }

/* iletişim paneli */
.contact { --r: 40px; display: grid; grid-template-columns: 1fr 1fr; gap: 32px; align-items: center; padding: clamp(28px, 5vw, 64px); }
.contact h2 { font-size: clamp(2.2rem, 5vw, 3.4rem); font-weight: 750; line-height: 1.05; }
.contact-copy p { margin: 14px 0 28px; color: var(--fg-2); font-size: 1.05rem; overflow-wrap: anywhere; }
.contact-links { display: flex; flex-direction: column; gap: 12px; }
.clink { --r: 20px; display: flex; align-items: center; gap: 14px; padding: 18px 20px; transition: transform .35s var(--spring), background .25s; }
.clink:hover { transform: translateY(-2px); background: var(--glass); }
.clink .ico { color: var(--fg-3); flex: none; }
.clink .nm { font-weight: 500; font-size: 1.05rem; }
.clink .handle { margin-left: auto; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.clink .out { flex: none; color: var(--fg-3); transition: transform .3s var(--spring), color .2s; }
.clink:hover .out { transform: translate(2px, -2px); color: var(--fg); }
@media (max-width: 760px) { .contact { grid-template-columns: 1fr; gap: 28px; } }

/* portre üstündeki kartlar: okunaklı, neredeyse opak zemin */
.float { background: var(--float-fill); -webkit-backdrop-filter: blur(20px) saturate(1.4); backdrop-filter: blur(20px) saturate(1.4); }
.float b { color: var(--fg); }
.float span:not(.logo-tile) { color: var(--fg-2); }

/* hero: büyük cam panel */
.hero { --r: 44px; min-height: 0; margin-top: 88px; padding: clamp(28px, 5vw, 72px); gap: clamp(24px, 4vw, 56px); }
.hero .eyebrow { display: inline-flex; align-items: center; gap: 10px; font-family: var(--mono); font-size: 13px; }
.hero .dot { width: 22px; height: 22px; border-radius: 50%; background: radial-gradient(circle, var(--fg) 0 32%, transparent 36%); box-shadow: inset 0 0 0 1px var(--glass-edge-2), 0 0 0 1px var(--glass-edge-2); background-color: var(--glass); }
.hero h1 .name { font-size: 1.12em; line-height: .98; letter-spacing: -.035em; }
/* portre: kalın cam çerçeve */
.portrait { --r: 40px; padding: clamp(10px, 1.6vw, 18px); display: block; overflow: visible; }
.portrait img { border-radius: calc(40px - clamp(10px, 1.6vw, 18px)); display: block; }
.portrait .initials { display: none; }
@media (max-width: 860px) { .hero { margin-top: 84px; padding: 28px 22px 40px; } .hero-visual { margin-left: 0; justify-self: center; } }

/* referanstaki gibi: paneller şeffaf cam, bulanıklık yok; sinapslar panellerin içinden de net görünür */
.glass { background: var(--glass); -webkit-backdrop-filter: none; backdrop-filter: none; }
.float { background: var(--float-fill); }
.hero { margin-top: 130px; }
@media (max-width: 860px) { .hero { margin-top: 96px; } }

/* hero ilk ekranı doldursun; About altında kalsın */
.hero { min-height: calc(100svh - 150px); }
@media (max-width: 860px) { .hero { min-height: 0; } }

/* açılır satır oku */
.tl-row { grid-template-columns: 44px 1fr auto 22px; }
.tl-row .chev { color: var(--fg-3); transition: transform .4s var(--spring), color .2s; justify-self: end; }
.tl-row:hover .chev { color: var(--fg); }
.tl-row[aria-expanded="true"] .chev { transform: rotate(180deg); color: var(--fg); }
.desc { grid-column: 2 / -1; }

/* menü: kayan içerikle karışmasın */
.dock.glass { background: var(--float-fill); -webkit-backdrop-filter: blur(24px) saturate(1.5); backdrop-filter: blur(24px) saturate(1.5); }

/* isim: gümüş-beyaz parıltı (renksiz) */
.holo { background: linear-gradient(105deg, #fff 0%, #fff 45%, #a9a9b0 50%, #fff 55%, #fff 100%); background-size: 320% 100%; background-position: 0 0; -webkit-background-clip: text; background-clip: text; color: transparent; animation: silver 8s ease-in-out infinite alternate; }
:root[data-theme="light"] .holo { background-image: linear-gradient(105deg, #1d1d1f 0%, #1d1d1f 45%, #8e8e93 50%, #1d1d1f 55%, #1d1d1f 100%); }
@keyframes silver { to { background-position: 100% 0; } }

/* açılış: zemin şeffaf, sinaps ağı görünsün; sayfa içeriği açılış bitince belirir */
.intro { background: transparent; }
.wrap, .dock { transition: opacity .9s ease .25s; }
html.intro-on .wrap, html.intro-on .dock { opacity: 0; pointer-events: none; }

/* ikincil buton: Download CV */
.btn-ghost { background: var(--glass); color: var(--fg); box-shadow: inset 0 1px 0 var(--glass-edge), 0 0 0 1px var(--glass-edge-2); }
.btn-ghost:hover { opacity: 1; background: var(--float-fill); }