/* =========================================================
   Mustafa Demirci — portfolyo
   Sade, kurumsal: siyah / beyaz zemin, yeşil vurgu. Koyu tema varsayılan.
   ========================================================= */

/* ---------- Yazı tipleri (kendi sunucumuzdan) ---------- */
@font-face {
  font-family: "Geist";
  src: url(/assets/fonts/geist-latin.19f9c92546.woff2) format("woff2");
  font-weight: 100 900;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Geist";
  src: url(/assets/fonts/geist-latin-ext.824f485b5d.woff2) format("woff2");
  font-weight: 100 900;
  font-display: swap;
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Geist Mono";
  src: url(/assets/fonts/geist-mono-latin.684ad5b531.woff2) format("woff2");
  font-weight: 100 900;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Geist Mono";
  src: url(/assets/fonts/geist-mono-latin-ext.1a189eb997.woff2) format("woff2");
  font-weight: 100 900;
  font-display: swap;
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

/* ---------- Tema ---------- */
:root {
  --font: "Geist", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "Geist Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --container: 1200px;
  --gutter: clamp(16px, 4vw, 32px);
  --header-h: 64px;
  --radius: 16px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}
:root,
[data-theme="dark"] {
  --bg: #0a0a0a;
  --bg-elev: #111111;
  --bg-elev-2: #161616;
  --bg-hover: #1a1a1a;
  --card: rgba(17, 17, 17, 0.8);
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.15);
  --grid: rgba(255, 255, 255, 0.035);
  --text: #fafafa;
  --text-2: #a1a1a1;
  --text-3: #6e6e6e;
  --accent: #4ade80;
  --accent-text: #4ade80;
  --accent-bg: rgba(74, 222, 128, 0.08);
  --accent-line: rgba(74, 222, 128, 0.24);
  --glow: rgba(74, 222, 128, 0.09);
  --logo-a: #fafafa;
  --logo-b: #7a7a7a;
  --header-bg: rgba(10, 10, 10, 0.72);
  --shadow: 0 24px 60px -30px rgba(0, 0, 0, 0.9);
  --thumb-bg: #ffffff;
  color-scheme: dark;
}
[data-theme="light"] {
  --bg: #ffffff;
  --bg-elev: #fafafa;
  --bg-elev-2: #f4f4f5;
  --bg-hover: #f1f1f2;
  --card: rgba(250, 250, 250, 0.82);
  --line: rgba(10, 10, 10, 0.08);
  --line-strong: rgba(10, 10, 10, 0.16);
  --grid: rgba(10, 10, 10, 0.045);
  --text: #0a0a0a;
  --text-2: #52525b;
  --text-3: #8b8b93;
  --accent: #22c55e;
  --accent-text: #15803d;
  --accent-bg: rgba(34, 197, 94, 0.09);
  --accent-line: rgba(22, 163, 74, 0.28);
  --glow: rgba(34, 197, 94, 0.1);
  --logo-a: #0a0a0a;
  --logo-b: #7a7a7a;
  --header-bg: rgba(255, 255, 255, 0.78);
  --shadow: 0 24px 60px -34px rgba(0, 0, 0, 0.22);
  --thumb-bg: #ffffff;
  color-scheme: light;
}

/* ---------- Temel ---------- */
*, *::before, *::after { box-sizing: border-box; }
html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 12px);
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  overflow-x: clip;
  transition: background-color 0.4s ease, color 0.4s ease;
}
html { overflow-x: clip; }
img, svg, canvas { display: block; max-width: 100%; }
img { height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
ul, ol, dl, dd { list-style: none; margin: 0; padding: 0; }
h1, h2, h3, h4, p, figure { margin: 0; }
h1, h2, h3, h4 { font-weight: 600; letter-spacing: -0.03em; line-height: 1.1; text-wrap: balance; }
p { text-wrap: pretty; }
::selection { background: var(--accent); color: #0a0a0a; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 8px; }

.container { width: 100%; max-width: calc(var(--container) + var(--gutter) * 2); margin-inline: auto; padding-inline: var(--gutter); }
.mono { font-family: var(--mono); }
.muted, .muted .w > span { color: var(--text-3); }
.sr-only {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip-link {
  position: fixed; top: 12px; left: 12px; z-index: 200; padding: 10px 16px; border-radius: 10px;
  background: var(--text); color: var(--bg); font-weight: 600; transform: translateY(-160%); transition: transform 0.2s;
}
.skip-link:focus { transform: none; }
.icon { width: 18px; height: 18px; flex: none; }

/* ---------- 3D küre ---------- */
.sphere-canvas {
  position: fixed; inset: 0; width: 100%; height: 100vh; height: 100lvh;
  z-index: 0; pointer-events: none; opacity: 0; transition: opacity 1.4s ease;
}
.sphere-ready .sphere-canvas { opacity: 1; }
main, .site-footer { position: relative; z-index: 1; }
html.sphere-hover body { cursor: grab; }
html.sphere-drag body { cursor: grabbing; user-select: none; }

/* ---------- Kaydırma çubuğu ---------- */
.progress {
  position: fixed; top: 0; left: 0; right: 0; height: 2px; z-index: 60;
  background: var(--accent); transform: scaleX(0); transform-origin: 0 50%;
}

/* ---------- Üst menü ---------- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50; height: var(--header-h);
  border-bottom: 1px solid transparent; transition: background-color 0.3s, border-color 0.3s;
}
.site-header.is-scrolled {
  background: var(--header-bg);
  -webkit-backdrop-filter: blur(14px) saturate(1.5);
  backdrop-filter: blur(14px) saturate(1.5);
  border-bottom-color: var(--line);
}
.header-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { display: inline-flex; align-items: center; gap: 10px; flex: none; }
.brand-mark { width: 30px; height: 30px; }
.brand-word { font-size: 1.05rem; font-weight: 300; letter-spacing: -0.02em; line-height: 1; }
.brand-word b { font-weight: 700; }
.nav ul { display: flex; gap: 2px; }
.nav a {
  position: relative; display: block; padding: 7px 12px; border-radius: 8px;
  color: var(--text-2); font-size: 0.9rem; font-weight: 450; transition: color 0.2s, background-color 0.2s;
}
.nav a:hover { color: var(--text); background: var(--bg-hover); }
.nav a.is-active { color: var(--text); }
.nav a.is-active::after {
  content: ""; position: absolute; left: 50%; bottom: 2px; width: 4px; height: 4px; margin-left: -2px;
  border-radius: 50%; background: var(--accent);
}
.header-actions { display: flex; align-items: center; gap: 8px; }
.icon-btn {
  display: inline-grid; place-items: center; height: 36px; min-width: 36px; padding: 0 10px;
  border: 1px solid var(--line); border-radius: 10px; color: var(--text-2);
  font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.06em;
  transition: color 0.2s, background-color 0.2s, border-color 0.2s;
}
.icon-btn:hover { color: var(--text); background: var(--bg-hover); border-color: var(--line-strong); }
.theme-toggle { padding: 0; }
[data-theme="dark"] .i-moon, [data-theme="light"] .i-sun { display: none; }
.menu-toggle { display: none; position: relative; width: 36px; padding: 0; }
.menu-toggle span {
  position: absolute; left: 10px; right: 10px; height: 1.5px; background: var(--text); border-radius: 2px;
  transition: transform 0.4s var(--ease), top 0.4s var(--ease);
}
.menu-toggle span:first-child { top: 13px; }
.menu-toggle span:last-child { top: 20px; }
.menu-toggle[aria-expanded="true"] span:first-child { top: 16.5px; transform: rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:last-child { top: 16.5px; transform: rotate(-45deg); }

.mobile-menu {
  position: fixed; inset: 0; z-index: 45; padding-top: calc(var(--header-h) + 24px); padding-bottom: 28px;
  background: var(--bg); opacity: 0; visibility: hidden; transition: opacity 0.3s, visibility 0.3s; overflow-y: auto;
}
.menu-open .mobile-menu { opacity: 1; visibility: visible; }
.menu-open { overflow: hidden; }
.mobile-menu nav { display: flex; flex-direction: column; min-height: 100%; }
.mobile-menu li {
  border-bottom: 1px solid var(--line); opacity: 0; transform: translateY(12px);
  transition: opacity 0.4s var(--ease), transform 0.5s var(--ease); transition-delay: calc(var(--i) * 40ms + 60ms);
}
.menu-open .mobile-menu li { opacity: 1; transform: none; }
.mobile-menu li a { display: flex; align-items: baseline; gap: 14px; padding: 16px 0; font-size: 1.75rem; font-weight: 600; letter-spacing: -0.03em; }
.mobile-menu li a .mono { font-size: 0.75rem; font-weight: 400; color: var(--accent-text); }
.mobile-menu-foot { margin-top: auto; padding-top: 28px; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; color: var(--text-2); font-size: 0.92rem; }

/* ---------- Düğmeler ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 44px; padding: 0 20px; border-radius: 10px; border: 1px solid transparent;
  font-size: 0.94rem; font-weight: 500; white-space: nowrap;
  transition: background-color 0.2s, border-color 0.2s, color 0.2s, transform 0.2s, box-shadow 0.2s;
}
.btn:active { transform: translateY(1px); }
.btn .icon { width: 16px; height: 16px; transition: transform 0.25s var(--ease); }
.btn-primary { background: var(--text); color: var(--bg); }
.btn-primary:hover { box-shadow: 0 0 0 4px var(--accent-bg), 0 8px 24px -10px var(--accent); }
.btn-primary:hover .icon { transform: translateX(2px); }
.btn-ghost { background: transparent; border-color: var(--line-strong); color: var(--text); }
.btn-ghost:hover { background: var(--bg-hover); }
.btn-ghost:hover .icon { transform: translateY(1px); }
.btn-sm { height: 36px; padding: 0 14px; font-size: 0.86rem; }
.btn-lg { height: 52px; padding: 0 24px; font-size: 1rem; }
.btn-square { width: 52px; padding: 0; }
.link {
  display: inline-flex; align-items: center; gap: 6px; color: var(--text); font-weight: 500; font-size: 0.94rem;
  background: linear-gradient(var(--accent), var(--accent)) 0 100% / 0 1px no-repeat; transition: background-size 0.4s var(--ease);
}
.link .icon { width: 16px; height: 16px; color: var(--accent-text); }
.link:hover { background-size: 100% 1px; }

/* ---------- Rozetler ---------- */
.chip {
  display: inline-flex; align-items: center; gap: 10px; padding: 6px 14px 6px 12px;
  border-radius: 999px; border: 1px solid var(--accent-line); background: var(--accent-bg);
  color: var(--text); font-size: 0.875rem; font-weight: 500;
}
.dot { position: relative; width: 7px; height: 7px; flex: none; border-radius: 50%; background: var(--accent); box-shadow: 0 0 10px var(--accent); }
.chip .dot::after { content: ""; position: absolute; inset: -4px; border-radius: 50%; border: 1px solid var(--accent); animation: ping 2.4s var(--ease) infinite; }
@keyframes ping { from { transform: scale(0.5); opacity: 0.9; } to { transform: scale(2); opacity: 0; } }
.label { display: inline-flex; align-items: center; gap: 8px; color: var(--accent-text); font-size: 0.85rem; font-weight: 500; }
.label .dot { width: 6px; height: 6px; box-shadow: none; }
.kind { font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.02em; color: var(--text-3); }
.tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tags li {
  padding: 3px 9px; border-radius: 6px; border: 1px solid var(--line); background: var(--bg-elev-2);
  color: var(--text-2); font-family: var(--mono); font-size: 0.72rem; line-height: 1.6;
}

/* ---------- Bölüm başlıkları ---------- */
.section { position: relative; padding-block: clamp(80px, 10vw, 128px); }
.section + .section { border-top: 1px solid var(--line); }
.section-head { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); gap: 24px 64px; align-items: end; margin-bottom: clamp(40px, 6vw, 64px); }
.section-title { margin-top: 16px; font-size: clamp(2rem, 3.8vw, 3.1rem); line-height: 1.06; letter-spacing: -0.04em; max-width: 18ch; }
.section-side { display: flex; flex-direction: column; align-items: flex-start; gap: 16px; padding-bottom: 6px; }
.section-lead { color: var(--text-2); font-size: 1.04rem; max-width: 46ch; }
.col-title { font-size: 0.75rem; font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-3); margin-bottom: 24px; }

/* ---------- Görünüme girme animasyonları ---------- */
.split .w { display: inline-block; overflow: hidden; vertical-align: top; padding: 0.1em 0.03em 0.12em; margin: -0.1em -0.03em -0.12em; }
.js .split .w > span { display: inline-block; transform: translate3d(0, 105%, 0); transition: transform 1s var(--ease); transition-delay: calc(var(--i, 0) * 35ms + var(--d, 0s)); }
.js .split.is-in .w > span { transform: none; }
.js .reveal { opacity: 0; transform: translate3d(0, 18px, 0); transition: opacity 0.9s var(--ease), transform 1s var(--ease); transition-delay: var(--d, 0s); }
.js .reveal.is-in { opacity: 1; transform: none; }
.reveal-all .reveal, .reveal-all .split .w > span { opacity: 1 !important; transform: none !important; }

/* ---------- Giriş ---------- */
.hero {
  position: relative; min-height: 100vh; min-height: 100svh; display: flex; flex-direction: column; justify-content: center;
  padding-top: calc(var(--header-h) + 48px); padding-bottom: 72px;
}
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background-image: linear-gradient(var(--grid) 1px, transparent 1px), linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 64px 64px; background-position: center top;
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 60% 40%, #000 30%, transparent 75%);
  mask-image: radial-gradient(ellipse 80% 70% at 60% 40%, #000 30%, transparent 75%);
}
.hero::after {
  content: ""; position: absolute; z-index: -1; pointer-events: none; left: 79%; top: 50%; width: min(56vw, 760px); aspect-ratio: 1;
  transform: translate(-50%, -50%); background: radial-gradient(circle, var(--glow), transparent 62%);
}
.sphere-fallback {
  position: absolute; z-index: -1; left: 79%; top: 50%; width: min(34vw, 460px); aspect-ratio: 1; transform: translate(-50%, -50%);
  border-radius: 50%; pointer-events: none; opacity: 0.5; transition: opacity 1.2s;
  background: radial-gradient(circle, var(--text-3) 1px, transparent 1.6px) 0 0 / 12px 12px;
  -webkit-mask-image: radial-gradient(circle, #000 55%, transparent 70%);
  mask-image: radial-gradient(circle, #000 55%, transparent 70%);
}
.sphere-ready .sphere-fallback { opacity: 0; }
.hero-inner { position: relative; }
.hero-title { margin-top: 28px; font-size: clamp(2.4rem, 4.5vw, 4.2rem); font-weight: 600; line-height: 1.04; letter-spacing: -0.05em; max-width: 13.5em; }
.hero-title .line { display: block; }
.hero-lead { margin-top: 24px; max-width: 52ch; color: var(--text-2); font-size: clamp(1rem, 1.25vw, 1.14rem); }
.hero-cta { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 36px; }
.stats { display: flex; flex-wrap: wrap; gap: 0; margin-top: 56px; }
.stats > div { display: flex; flex-direction: column-reverse; gap: 2px; padding-right: 32px; margin-right: 32px; border-right: 1px solid var(--line); }
.stats > div:last-child { border-right: 0; margin-right: 0; padding-right: 0; }
.stats dd { font-size: 1.9rem; font-weight: 600; letter-spacing: -0.04em; line-height: 1.1; }
.stats dt { font-size: 0.85rem; color: var(--text-3); }
/* Kürenin hemen altında (küre merkezi ekranın ~%79'unda, yarıçapı ~%26.5 yükseklik) */
.sphere-hint {
  position: absolute; left: 79%; top: calc(50% + 30vh); transform: translateX(-50%);
  display: inline-flex; align-items: center; gap: 8px; color: var(--text-3); font-size: 0.75rem; letter-spacing: 0.04em;
  opacity: 0; transition: opacity 0.8s;
}
.sphere-hint .icon { width: 15px; height: 15px; color: var(--accent-text); }
.sphere-ready .sphere-hint { opacity: 1; }
.sphere-hint.is-used { opacity: 0 !important; }

/* ---------- Teknolojiler ---------- */
.tech { position: relative; z-index: 1; padding: 40px 0 44px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.tech-label { margin-bottom: 22px; color: var(--text-3); font-size: 0.85rem; text-align: center; }
.marquee {
  display: flex; overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
}
.marquee-track { display: flex; flex: none; gap: 52px; padding-right: 52px; animation: marquee 48s linear infinite; }
.marquee-track li {
  display: inline-flex; align-items: center; gap: 12px;
  font-size: 1.1rem; font-weight: 500; letter-spacing: -0.02em; color: var(--text-2); white-space: nowrap; transition: color 0.25s;
}
.marquee-track .logo { width: 28px; height: 28px; }
.marquee-track li:hover { color: var(--text); }
.marquee-track li:hover .logo, .chips li:hover .logo { color: var(--brand, var(--text)); }
.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
.logo { flex: none; fill: currentColor; transition: color 0.25s, transform 0.3s var(--ease); }
.icon.logo { fill: none; }
.marquee-track li:hover .logo { transform: scale(1.08); }
.marquee:hover .marquee-track { animation-play-state: paused; }
@keyframes marquee { to { transform: translate3d(-100%, 0, 0); } }

/* ---------- Hakkımda ---------- */
.about-grid { display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr); gap: clamp(40px, 6vw, 88px); align-items: start; }
.portrait { overflow: hidden; border-radius: 20px; border: 1px solid var(--line); background: var(--bg-elev-2); aspect-ratio: 4 / 5; box-shadow: var(--shadow); }
.portrait img { width: 100%; height: 100%; object-fit: cover; object-position: 50% 22%; }
.facts { margin-top: 20px; border-top: 1px solid var(--line); }
.facts > div { display: flex; justify-content: space-between; gap: 16px; padding: 12px 0; border-bottom: 1px solid var(--line); font-size: 0.92rem; }
.facts dt { color: var(--text-3); }
.facts dd { color: var(--text); text-align: right; }
.about-p { margin-top: 20px; color: var(--text-2); font-size: 1.04rem; max-width: 62ch; }
.about-body .section-title { margin-bottom: 8px; }
.highlights { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 36px; }

.card {
  position: relative; padding: 22px; border-radius: var(--radius); border: 1px solid var(--line); background: var(--card);
  transition: border-color 0.3s, background-color 0.3s, transform 0.4s var(--ease);
}
.card::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none; opacity: 0; transition: opacity 0.3s;
  background: radial-gradient(320px circle at var(--mx, 50%) var(--my, 0%), var(--accent-bg), transparent 60%);
}
.card:hover { border-color: var(--line-strong); }
.card:hover::before { opacity: 1; }
.card-icon { width: 36px; height: 36px; padding: 8px; margin-bottom: 16px; border-radius: 10px; border: 1px solid var(--line); background: var(--bg-elev-2); color: var(--accent-text); }
.highlights strong { position: relative; display: block; font-size: 1rem; font-weight: 600; letter-spacing: -0.02em; }
.highlights span { position: relative; display: block; margin-top: 4px; color: var(--text-2); font-size: 0.92rem; line-height: 1.55; }

/* ---------- Deneyim & eğitim ---------- */
.exp-grid { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr); gap: clamp(40px, 6vw, 96px); }
.timeline { position: relative; border-left: 1px solid var(--line-strong); margin-left: 4px; }
.tl-item { position: relative; padding: 0 0 32px 28px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-dot { position: absolute; left: -5px; top: 6px; width: 9px; height: 9px; border-radius: 50%; background: var(--bg); border: 1.5px solid var(--text-3); }
.tl-item.is-current .tl-dot { background: var(--accent); border-color: var(--accent); box-shadow: 0 0 0 4px var(--accent-bg), 0 0 12px var(--accent); }
.tl-period { display: flex; align-items: center; gap: 8px; font-size: 0.78rem; color: var(--text-3); }
.tl-now { padding: 1px 8px; border-radius: 999px; background: var(--accent-bg); border: 1px solid var(--accent-line); color: var(--accent-text); font-size: 0.7rem; }
.tl-item h4 { margin-top: 6px; font-size: 1.08rem; letter-spacing: -0.02em; }
.tl-org { margin-top: 2px; color: var(--text-2); font-size: 0.94rem; }
.tl-desc { margin-top: 8px; color: var(--text-3); font-size: 0.92rem; line-height: 1.6; max-width: 60ch; }
.exp-cv { margin-top: 36px; }

/* ---------- Projeler ---------- */
.features { display: grid; gap: 20px; }
.feature {
  display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); overflow: hidden;
  border: 1px solid var(--line); border-radius: 20px; background: var(--card); transition: border-color 0.3s;
}
.feature:hover { border-color: var(--line-strong); }
.feature:nth-child(even) { grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr); }
.feature:nth-child(even) .feature-media { order: 2; }
.feature-media {
  position: relative; display: flex; padding: clamp(20px, 3.5vw, 40px) clamp(20px, 3.5vw, 40px) 0; overflow: hidden;
  background: radial-gradient(70% 60% at 50% 100%, var(--glow), transparent 70%), color-mix(in srgb, var(--bg-elev-2) 80%, transparent);
  border-right: 1px solid var(--line);
}
.feature:nth-child(even) .feature-media { border-right: 0; border-left: 1px solid var(--line); }
.browser { flex: 1; display: flex; flex-direction: column; min-width: 0; border: 1px solid var(--line-strong); border-bottom: 0; border-radius: 12px 12px 0 0; overflow: hidden; background: var(--bg); box-shadow: var(--shadow); }
.browser-bar { display: flex; align-items: center; gap: 6px; height: 32px; padding: 0 12px; flex: none; border-bottom: 1px solid var(--line); background: var(--bg-elev); }
.browser-bar i { width: 8px; height: 8px; border-radius: 50%; background: var(--line-strong); }
.browser-bar span { margin-left: 8px; font-family: var(--mono); font-size: 0.7rem; color: var(--text-3); }
.browser img { flex: 1 1 0; width: 100%; height: 0; min-height: 280px; object-fit: cover; object-position: left top; transition: transform 0.8s var(--ease); transform-origin: 50% 0; }
.feature:hover .browser img { transform: scale(1.02); }
.feature-body { display: flex; flex-direction: column; gap: 16px; padding: clamp(24px, 3.5vw, 44px); }
.feature-body h3 { font-size: clamp(1.7rem, 2.8vw, 2.25rem); letter-spacing: -0.04em; }
.feature-desc { color: var(--text-2); }
.checks { display: grid; gap: 8px; }
.checks li { position: relative; padding-left: 24px; font-size: 0.93rem; color: var(--text); }
.checks li::before {
  content: ""; position: absolute; left: 2px; top: 0.42em; width: 12px; height: 7px;
  border-left: 1.6px solid var(--accent); border-bottom: 1.6px solid var(--accent); transform: rotate(-45deg);
}
.feature-body .link { margin-top: auto; padding-top: 4px; align-self: flex-start; }

.project-list { margin-top: 48px; border-top: 1px solid var(--line); }
.project-row {
  position: relative; display: grid; grid-template-columns: 48px minmax(0, 0.9fr) minmax(0, 1.5fr) minmax(0, 0.9fr);
  gap: 28px; align-items: start; padding: 28px 0; border-bottom: 1px solid var(--line);
}
.project-row::before {
  content: ""; position: absolute; inset: 0 calc(var(--gutter) * -0.6); z-index: -1; border-radius: 12px;
  background: var(--bg-elev); opacity: 0; transition: opacity 0.25s;
}
.project-row:hover::before { opacity: 1; }
.pr-num { padding-top: 4px; font-size: 0.78rem; color: var(--text-3); }
.project-row:hover .pr-num { color: var(--accent-text); }
.pr-main h3 { font-size: 1.3rem; letter-spacing: -0.03em; }
.pr-main .kind { margin-top: 6px; }
.pr-desc { color: var(--text-2); font-size: 0.95rem; }
.project-row .tags { justify-content: flex-end; }
.work-more { display: flex; flex-wrap: wrap; align-items: baseline; gap: 12px; margin-top: 28px; color: var(--text-2); font-size: 0.95rem; }
.work-more .mono { font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent-text); }

/* ---------- Uzmanlık ---------- */
.service-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.service { padding: 28px; }
.service h3 { position: relative; font-size: 1.08rem; letter-spacing: -0.02em; }
.service p { position: relative; margin-top: 8px; color: var(--text-2); font-size: 0.94rem; }
.service:hover { transform: translateY(-2px); }
.stack { margin-top: 64px; }
.stack-groups { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 28px; }
.stack-group > p { margin-bottom: 12px; font-size: 0.9rem; font-weight: 500; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chips li {
  display: inline-flex; align-items: center; gap: 8px; padding: 6px 12px 6px 10px; border-radius: 8px;
  border: 1px solid var(--line); background: var(--card); color: var(--text-2); font-size: 0.87rem; transition: border-color 0.2s, color 0.2s;
}
.chips .logo { width: 15px; height: 15px; color: var(--text-3); }
.chips li:hover { border-color: var(--accent-line); color: var(--text); }

/* ---------- Sertifikalar ---------- */
.cert-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 14px; }
.cert {
  width: 100%; height: 100%; display: flex; flex-direction: column; gap: 4px; padding: 10px 10px 16px; text-align: left;
  border-radius: var(--radius); border: 1px solid var(--line); background: var(--card);
  transition: border-color 0.3s, transform 0.4s var(--ease), background-color 0.3s;
}
.cert:hover { border-color: var(--accent-line); transform: translateY(-3px); }
.cert-thumb { position: relative; display: block; margin-bottom: 10px; aspect-ratio: 1.414; overflow: hidden; border-radius: 9px; border: 1px solid var(--line); background: var(--thumb-bg); }
.cert-thumb img { width: 100%; height: 100%; object-fit: cover; object-position: center top; transition: transform 0.6s var(--ease); }
.cert:hover .cert-thumb img { transform: scale(1.04); }
.cert-zoom {
  position: absolute; right: 8px; top: 8px; width: 28px; height: 28px; padding: 6px; border-radius: 8px;
  background: rgba(10, 10, 10, 0.72); color: #fff; opacity: 0; transform: scale(0.9); transition: opacity 0.25s, transform 0.25s;
}
.cert:hover .cert-zoom, .cert:focus-visible .cert-zoom { opacity: 1; transform: none; }
.cert-issuer { padding-inline: 4px; font-size: 0.74rem; color: var(--accent-text); font-weight: 500; }
.cert-title { padding-inline: 4px; font-size: 0.9rem; font-weight: 550; line-height: 1.35; letter-spacing: -0.01em; }
.cert-year { margin-top: auto; padding: 6px 4px 0; font-size: 0.72rem; color: var(--text-3); }

.lightbox { width: min(1100px, 94vw); max-width: none; max-height: none; padding: 0; border: 0; background: transparent; color: var(--text); overflow: visible; }
.lightbox::backdrop { background: rgba(0, 0, 0, 0.82); -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px); }
.lightbox[open] { animation: lb-in 0.35s var(--ease); }
@keyframes lb-in { from { opacity: 0; transform: scale(0.97); } }
.lb-inner { position: relative; }
.lb-figure { display: flex; flex-direction: column; align-items: center; gap: 14px; }
.lb-img { max-height: 78vh; width: auto; max-width: 100%; border-radius: 12px; background: #fff; box-shadow: 0 30px 80px -20px rgba(0, 0, 0, 0.7); }
.lb-caption { display: flex; flex-direction: column; align-items: center; gap: 2px; color: #fafafa; text-align: center; }
.lb-title { font-weight: 600; }
.lb-meta { font-size: 0.78rem; color: #a1a1a1; }
.lb-btn { position: absolute; width: 42px; height: 42px; border-radius: 12px; background: rgba(23, 23, 23, 0.9); border-color: rgba(255, 255, 255, 0.14); color: #fafafa; }
.lb-btn:hover { background: #262626; color: #fff; }
.lb-btn .icon { width: 20px; height: 20px; }
.lb-close { right: -8px; top: -54px; }
.lb-prev { left: -60px; top: calc(39vh - 21px); }
.lb-next { right: -60px; top: calc(39vh - 21px); }

/* ---------- Süreç ---------- */
.steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.step { position: relative; padding: 24px 22px 26px; border-radius: var(--radius); border: 1px solid var(--line); background: var(--card); }
.step-num { display: inline-block; font-size: 0.78rem; color: var(--accent-text); }
.step h3 { margin-top: 18px; font-size: 1.1rem; letter-spacing: -0.02em; }
.step p { margin-top: 8px; color: var(--text-2); font-size: 0.93rem; }

/* ---------- İletişim ---------- */
.contact {
  min-height: 100vh; min-height: 100svh; display: grid; align-items: end; text-align: center;
  padding-top: calc(var(--header-h) + 34vh); padding-top: calc(var(--header-h) + 34svh); padding-bottom: clamp(56px, 9vh, 112px);
}
.contact::before { content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none; background: radial-gradient(40% 36% at 50% 28%, var(--glow), transparent 70%); }
.contact-inner { display: flex; flex-direction: column; align-items: center; }
.contact-title { margin-top: 18px; font-size: clamp(2.3rem, 5.4vw, 4.4rem); line-height: 1.04; letter-spacing: -0.05em; }
.contact-title .line { display: block; }
.contact-lead { margin-top: 22px; max-width: 44ch; color: var(--text-2); font-size: 1.06rem; }
.contact-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-top: 34px; }
.socials { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-top: 22px; }
.socials a {
  display: inline-flex; align-items: center; gap: 8px; padding: 7px 14px; border-radius: 999px; border: 1px solid var(--line);
  color: var(--text-2); font-size: 0.9rem; transition: color 0.2s, border-color 0.2s;
}
.socials a .icon { width: 15px; height: 15px; }
.socials a:hover { color: var(--text); border-color: var(--line-strong); }

/* ---------- Alt bilgi ---------- */
.site-footer { border-top: 1px solid var(--line); background: var(--bg); }
.footer-inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px 32px; padding-block: 28px; font-size: 0.88rem; color: var(--text-3); }
.footer-inner .brand-mark { width: 26px; height: 26px; }
.footer-inner .brand-word { font-size: 0.95rem; color: var(--text); }
.footer-links { display: flex; gap: 20px; }
.footer-links a { transition: color 0.2s; }
.footer-links a:hover { color: var(--text); }

/* ---------- Bildirim ---------- */
.toast {
  position: fixed; left: 50%; bottom: 24px; z-index: 120; padding: 10px 18px; border-radius: 10px;
  background: var(--text); color: var(--bg); font-size: 0.9rem; font-weight: 500;
  transform: translate(-50%, 20px); opacity: 0; pointer-events: none; transition: all 0.4s var(--ease);
}
.toast.is-show { transform: translate(-50%, 0); opacity: 1; }

/* ---------- 404 ---------- */
.nf { min-height: 100vh; min-height: 100svh; display: grid; align-items: center; text-align: center; }
.nf-inner { display: flex; flex-direction: column; align-items: center; padding-block: 120px; }
.nf-title { margin-top: 24px; font-size: clamp(2.2rem, 5vw, 3.6rem); letter-spacing: -0.045em; }
.nf-text { margin-top: 12px; color: var(--text-2); }
.nf-en { color: var(--text-3); font-size: 0.94rem; }
.nf .hero-cta { justify-content: center; }

/* ---------- Duyarlı düzen ---------- */
@media (max-width: 1100px) {
  .nav a { padding-inline: 9px; }
  .cert-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .project-row { grid-template-columns: 40px minmax(0, 1fr) minmax(0, 1.6fr); }
  .project-row .tags { grid-column: 3; justify-content: flex-start; }
  .stack-groups { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .lb-prev { left: 8px; top: auto; bottom: -58px; }
  .lb-next { right: 8px; top: auto; bottom: -58px; }
  .lb-close { right: 0; }
}
@media (max-width: 1000px) {
  .nav, .header-cta { display: none; }
  .menu-toggle { display: inline-grid; }
  .feature, .feature:nth-child(even) { grid-template-columns: 1fr; }
  .feature:nth-child(even) .feature-media { order: 0; border-left: 0; }
  .feature-media { border-right: 0; border-bottom: 1px solid var(--line); }
  .browser img { flex: none; height: auto; min-height: 0; aspect-ratio: 16 / 10; }
  .service-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .exp-grid { grid-template-columns: 1fr; }
}
@media (max-width: 859px) {
  .hero { justify-content: flex-start; padding-top: calc(var(--header-h) + 34vh); padding-top: calc(var(--header-h) + 33svh); padding-bottom: 56px; }
  .hero::after { left: 50%; top: calc(var(--header-h) + 15svh); width: 100vw; }
  .hero::before { -webkit-mask-image: radial-gradient(ellipse 100% 50% at 50% 20%, #000 20%, transparent 75%); mask-image: radial-gradient(ellipse 100% 50% at 50% 20%, #000 20%, transparent 75%); }
  .sphere-fallback { left: 50%; top: calc(var(--header-h) + 15svh); width: 56vw; }
  .hero-title { margin-top: 22px; font-size: clamp(2rem, 8.6vw, 3.6rem); }
  .stats { margin-top: 40px; }
  .stats > div { padding-right: 20px; margin-right: 20px; }
  .stats dd { font-size: 1.6rem; }
  .sphere-hint { display: none; }
  .about-grid { grid-template-columns: 1fr; }
  .about-media { max-width: 420px; }
  .section-head { grid-template-columns: 1fr; }
  .contact { align-items: start; padding-top: calc(var(--header-h) + 30vh); padding-top: calc(var(--header-h) + 29svh); }
}
@media (max-width: 640px) {
  .brand-word { font-size: 0.98rem; }
  .highlights { grid-template-columns: 1fr; }
  .cert-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .cert { padding: 8px 8px 12px; }
  .cert-title { font-size: 0.84rem; }
  .project-row { grid-template-columns: 1fr; gap: 12px; padding: 24px 0; }
  .project-row .tags { grid-column: auto; }
  .service-grid, .steps, .stack-groups { grid-template-columns: 1fr; }
  .stats > div { flex: 1; padding-right: 12px; margin-right: 12px; }
  .stats dt { font-size: 0.78rem; }
  .contact-actions { width: 100%; }
  .contact-actions .btn-primary { flex: 1 1 100%; }
  .contact-actions .btn-ghost:not(.btn-square) { flex: 1; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}

/* ---------- Hareketi azalt ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; transition-delay: 0s !important; }
  .js .reveal, .js .split .w > span { opacity: 1; transform: none; }
  .marquee-track { animation: none; }
}