/* ============================================================
   Muhammed Uygur — Computer Engineer & Designer
   Cinematic-dark scroll-scrub portfolio. Vanilla, self-contained.
   ============================================================ */

@font-face{
  font-family:"Space Grotesk";
  src:url("../fonts/SpaceGrotesk-Variable.woff2") format("woff2");
  font-weight:300 700;font-style:normal;font-display:swap;
  unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215;
}
/* Latin Extended — Turkish (ğ ş İ Ş Ğ …) + other diacritics */
@font-face{
  font-family:"Space Grotesk";
  src:url("../fonts/SpaceGrotesk-latinExt.woff2") format("woff2");
  font-weight:300 700;font-style:normal;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;
}

:root{
  --bg:#05060a;
  --bg-soft:#0b0d14;
  --ink:#eceae4;
  --ink-dim:#9498a3;
  --ink-faint:#565a66;
  --amber:#38e6ff;   /* site accent (cyan) — was gold; unified with the neon palette */
  --blue:#6f9fd8;    /* studio cool */
  --line:rgba(255,255,255,.10);
  /* tool-chip tokens (ambient.js reads these from :root) */
  --tk-chip-top:#161a24; --tk-chip-bot:#0e1119;
  --tk-chip-edge:rgba(236,234,228,.14); --tk-mono:rgba(236,234,228,.82);
  --tk-accent-design:#ff53a8; --tk-accent-eng:#38e6ff; --tk-accent-mkt:#8b6cff;
  --tk-flash:#38e6ff; --tk-shadow:rgba(0,0,0,0);
  --maxw:1240px;
  --pad-x:clamp(20px,5vw,56px);
  --ease:cubic-bezier(.4,0,.1,1);
  --font:"Space Grotesk",-apple-system,"Helvetica Neue","Segoe UI",Arial,sans-serif;
  --mono:ui-monospace,"SF Mono",SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  color-scheme:dark;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  background:var(--bg);color:var(--ink);
  font-family:var(--font);font-weight:400;line-height:1.5;font-synthesis:none;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}

::selection{background:var(--amber);color:#05060a}
a:focus-visible,button:focus-visible,.btn:focus-visible,.card:focus-visible,.mega-mail:focus-visible{
  outline:2px solid var(--amber);outline-offset:3px;border-radius:4px}
.card:focus-visible{outline-offset:6px}
:focus:not(:focus-visible){outline:none}

.vh{position:absolute;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:10px;left:10px;z-index:200;padding:10px 16px;border-radius:6px;
  background:var(--amber);color:#05060a;font-size:13px;font-weight:600;letter-spacing:.02em;
  transform:translateY(-140%);transition:transform .2s var(--ease)}
.skip-link:focus,.skip-link:focus-visible{transform:none;outline:2px solid #fff;outline-offset:2px}

/* ---------- LOADER ---------- */
#loader{position:fixed;inset:0;z-index:100;background:var(--bg);
  display:grid;place-items:center;transition:opacity .8s var(--ease),visibility .8s}
#loader.done{opacity:0;visibility:hidden;pointer-events:none}
.loader-inner{display:flex;flex-direction:column;align-items:center;gap:24px}
.loader-mark{width:56px;height:36px;background:var(--amber);
  -webkit-mask:url("../logo.png") center/contain no-repeat;mask:url("../logo.png") center/contain no-repeat;
  animation:pulse 1.8s var(--ease) infinite}
@keyframes pulse{0%,100%{opacity:.4;transform:scale(.92)}50%{opacity:1;transform:scale(1.04)}}
.loader-bar{width:180px;height:1px;background:var(--line);overflow:hidden}
#loader-fill{display:block;height:100%;width:0;background:var(--ink);transition:width .2s linear}
.loader-pct{font-size:11px;letter-spacing:.22em;color:var(--ink-dim);font-variant-numeric:tabular-nums}

/* ---------- NAV ---------- */
#nav{position:fixed;top:0;left:0;right:0;z-index:40;
  display:flex;align-items:center;justify-content:space-between;
  padding-top:max(22px,env(safe-area-inset-top));
  padding-right:max(var(--pad-x),env(safe-area-inset-right));
  padding-bottom:22px;
  padding-left:max(var(--pad-x),env(safe-area-inset-left));
  opacity:0;transform:translateY(-8px);
  transition:opacity .8s var(--ease) .3s,transform .8s var(--ease) .3s}
#nav::before{content:"";position:absolute;left:0;right:0;top:0;height:150px;z-index:-1;pointer-events:none;
  background:linear-gradient(180deg,rgba(5,6,10,.78),rgba(5,6,10,.40) 45%,transparent)}
body.ready #nav{opacity:1;transform:none}
.brand{display:flex;align-items:center;gap:12px;color:var(--ink);padding:6px 0;transition:color .3s var(--ease)}
.brand:hover{color:var(--amber)}
.brand-mark{width:34px;height:22px;background:currentColor;flex:none;
  -webkit-mask:url("../logo.png") center/contain no-repeat;mask:url("../logo.png") center/contain no-repeat}
.brand-name{font-weight:700;letter-spacing:.04em;font-size:14px}
.nav-links{display:flex;gap:26px}
.nav-links a{position:relative;font-size:13px;letter-spacing:.04em;color:var(--ink);opacity:.85;
  padding:8px 4px;margin:-8px 0;transition:opacity .3s var(--ease)}
.nav-links a:hover{opacity:1}
.nav-links a::after{content:"";position:absolute;left:4px;right:4px;bottom:4px;height:1px;background:currentColor;
  transform:scaleX(0);transform-origin:right;transition:transform .4s var(--ease)}
.nav-links a:hover::after{transform:scaleX(1);transform-origin:left}

/* ---------- HERO / SCRUB ---------- */
#hero{position:relative;height:var(--scrub-vh,560vh)}
.hero-stage{position:sticky;top:0;height:100vh;height:100dvh;width:100%;overflow:hidden;background:#000}
#frames{position:absolute;inset:0;width:100%;height:100%;display:block}

/* filmic overlays (all pointer-events:none, below the beats' z-index:5) */
.hero-grain{position:absolute;inset:-50%;pointer-events:none;opacity:.07;mix-blend-mode:soft-light;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  animation:grain 1.4s steps(3) infinite}
@keyframes grain{0%{transform:translate(0,0)}33%{transform:translate(-4%,3%)}66%{transform:translate(3%,-2%)}100%{transform:translate(0,0)}}
.hero-vignette{position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(120% 100% at 50% 42%,transparent 42%,rgba(2,3,7,.62) 100%),
            linear-gradient(180deg,rgba(2,3,7,.35),transparent 18% 82%,rgba(2,3,7,.45))}
.hero-grade{position:absolute;inset:0;pointer-events:none;mix-blend-mode:soft-light;opacity:.4;
  background:linear-gradient(120deg,rgba(216,162,79,.5),rgba(5,6,10,0) 46%,rgba(111,159,216,.45))}
/* bottom scrim: a clean dark band for the name; the face (upper frame) stays clear */
.hero-scrim{position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(to top,rgba(2,3,7,.72),rgba(2,3,7,.32) 20%,transparent 42%)}

/* copy beats over the video (placement set by JS via --x/--y) */
.beat{position:absolute;z-index:5;max-width:min(90vw,720px);
  padding-left:max(var(--pad-x),env(safe-area-inset-left));
  padding-right:max(var(--pad-x),env(safe-area-inset-right));
  opacity:0;visibility:hidden;will-change:opacity,transform;pointer-events:none}
.beat .btn{pointer-events:auto}

.kicker{display:block;font-size:12px;letter-spacing:.22em;text-transform:uppercase;color:var(--ink-dim);
  margin-bottom:18px;font-variant-numeric:tabular-nums}
.display{font-weight:700;letter-spacing:-.03em;line-height:.92;font-size:clamp(44px,7.8vw,102px);color:#fff;
  text-shadow:0 2px 40px rgba(0,0,0,.6)}
.display.sm{font-size:clamp(38px,6.5vw,84px)}
.lede{margin-top:20px;font-size:clamp(15px,1.6vw,20px);letter-spacing:.02em;color:#c9cdd6;
  text-shadow:0 1px 18px rgba(0,0,0,.85);text-wrap:pretty}
.beat .kicker{text-shadow:0 1px 18px rgba(0,0,0,.85)}
.word{font-weight:300;letter-spacing:-.02em;font-size:clamp(44px,8vw,104px);color:#fff;line-height:1;
  text-shadow:0 2px 24px rgba(0,0,0,.92),0 0 90px rgba(0,0,0,.7)}
.word-sub{margin-top:16px;font-size:clamp(14px,1.5vw,18px);color:#d7dae0;max-width:34ch;margin-left:auto;
  text-shadow:0 1px 18px rgba(0,0,0,.95);text-wrap:balance}

.cta-row{display:flex;gap:14px;justify-content:flex-start;margin-top:28px;flex-wrap:wrap}
/* final CTA sits to the LEFT so it never covers the seated figure on the right */
.beat--cta{max-width:min(88vw,480px)}
.btn{display:inline-block;padding:13px 24px;border:1px solid rgba(255,255,255,.7);border-radius:100px;
  font-size:13px;letter-spacing:.06em;color:#fff;background:rgba(255,255,255,.06);backdrop-filter:blur(4px);
  transition:background .3s var(--ease),border-color .3s var(--ease),color .3s var(--ease),transform .2s var(--ease)}
.btn:hover{background:#fff;color:#000;transform:translateY(-1px)}
.btn:active{transform:translateY(1px) scale(.985)}
.btn.ghost{border-color:rgba(255,255,255,.28)}
.btn.ghost:hover{border-color:#fff}

.scroll-hint{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);z-index:6;pointer-events:none;
  font-size:11px;letter-spacing:.24em;text-transform:uppercase;color:rgba(255,255,255,.6);
  display:flex;flex-direction:column;align-items:center;gap:10px;transition:opacity .5s var(--ease)}
.scroll-hint span{width:1px;height:34px;background:linear-gradient(rgba(255,255,255,.7),transparent);animation:drop 1.8s var(--ease) infinite}
@keyframes drop{0%{transform:scaleY(0);transform-origin:top}50%{transform:scaleY(1);transform-origin:top}50.1%{transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}
#hero.scrolled .scroll-hint{opacity:0}

/* ---------- SECTIONS ---------- */
.section{max-width:var(--maxw);margin:0 auto;
  padding-top:clamp(88px,13vh,160px);padding-bottom:clamp(88px,13vh,160px);
  padding-left:max(var(--pad-x),env(safe-area-inset-left));
  padding-right:max(var(--pad-x),env(safe-area-inset-right))}
.section + .section{padding-top:0}
.section-head{margin-bottom:clamp(32px,5vh,56px)}
.section-title{font-weight:300;font-size:clamp(26px,4vw,52px);line-height:1.12;letter-spacing:-.01em;max-width:20ch;text-wrap:balance}

/* work grid */
.work-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  column-gap:clamp(14px,2vw,26px);row-gap:clamp(44px,5vw,72px)}
.card{position:relative;display:block;opacity:0;transform:translateY(30px);
  transition:opacity .7s var(--ease),transform .7s var(--ease)}
.card.in{opacity:1;transform:none}
.card-thumb{aspect-ratio:4/5;border-radius:6px;overflow:hidden;position:relative;
  background:linear-gradient(150deg,var(--g1),var(--g2));
  filter:saturate(.85) contrast(1.03) brightness(.9);
  transition:filter .5s var(--ease),transform .5s var(--ease)}
.card-shot{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:top center;z-index:0}
.card-thumb::before{content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background:linear-gradient(150deg,var(--g1),var(--g2));mix-blend-mode:soft-light;opacity:.42;
  transition:opacity .5s var(--ease)}
.card:hover .card-thumb::before{opacity:.1}
.card-thumb::after{content:"";position:absolute;inset:0;z-index:2;pointer-events:none;
  background:radial-gradient(80% 60% at 50% 120%,rgba(0,0,0,.5),transparent)}
.card:hover .card-thumb{filter:saturate(1) contrast(1) brightness(1);transform:translateY(-4px)}
.card-meta{padding:18px 0 0}
.card-tag{position:relative;display:inline-flex;align-items:center;gap:6px;
  font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--amber)}
.card-tag::after{content:"\2197";opacity:0;transform:translate(-3px,3px);transition:opacity .3s var(--ease),transform .3s var(--ease)}
.card:hover .card-tag::after{opacity:1;transform:none}
.card-meta h3{font-weight:500;font-size:19px;margin:8px 0 4px;transition:color .3s var(--ease)}
.card:hover .card-meta h3{color:#fff}
.card-meta p{font-size:13px;color:var(--ink-dim);text-wrap:pretty}

/* about */
.about-body{display:grid;grid-template-columns:1.3fr .85fr;gap:clamp(30px,6vw,90px);align-items:start}
.about-lead{font-weight:300;font-size:clamp(22px,3vw,36px);line-height:1.28;letter-spacing:-.01em;text-wrap:balance}
.about-text{margin-top:22px;color:var(--ink-dim);font-size:16px;max-width:52ch;text-wrap:pretty}
.stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(20px,3vw,48px);margin-top:clamp(36px,5vh,52px)}
.stat{display:flex;flex-direction:column;gap:8px}
.stat-n{font-weight:400;font-size:clamp(30px,4vw,46px);line-height:1;color:var(--amber);letter-spacing:-.01em;
  font-variant-numeric:tabular-nums lining-nums}
.stat-l{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-dim);line-height:1.5}
.skills{list-style:none;display:flex;flex-direction:column;gap:12px;padding-top:0}
.skills li{font-size:14px;color:var(--ink-dim);padding-bottom:12px;border-bottom:1px solid var(--line)}

/* contact */
#contact{text-align:left}
.mega-mail{position:relative;display:inline-block;font-weight:300;letter-spacing:-.03em;line-height:1.05;
  font-size:clamp(22px,7vw,96px);color:#fff;overflow-wrap:anywhere;word-break:normal;
  transition:color .3s var(--ease),opacity .3s var(--ease)}
.mega-mail::after{content:"";position:absolute;left:0;bottom:.04em;height:2px;width:100%;
  background:var(--amber);transform:scaleX(0);transform-origin:left;transition:transform .5s var(--ease)}
.mega-mail:hover::after{transform:scaleX(1)}
.foot-row{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:20px;
  margin-top:clamp(44px,7vh,72px);padding-top:26px;border-top:1px solid var(--line)}
.socials{display:flex;gap:22px;flex-wrap:wrap}
.socials a{position:relative;font-size:14px;color:var(--ink-dim);transition:color .3s var(--ease)}
.socials a:hover{color:var(--ink)}
.socials a::after{content:"";position:absolute;left:0;bottom:-2px;width:100%;height:1px;background:currentColor;
  transform:scaleX(0);transform-origin:right;transition:transform .4s var(--ease)}
.socials a:hover::after{transform:scaleX(1);transform-origin:left}
.copyright{font-size:13px;color:var(--ink-dim);text-wrap:pretty}

/* ---------- RESPONSIVE ---------- */
@media (max-width:860px){
  .work-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .about-body{grid-template-columns:1fr}
  #hero{--scrub-vh:460vh}
}
@media (max-width:560px){
  .nav-links{gap:20px}
  .nav-links a{padding:10px 6px}
  .btn{padding:15px 26px}
  .work-grid{grid-template-columns:1fr}
  .beat{max-width:94vw}
  .word-sub{max-width:26ch;font-size:14px;margin-top:12px}
  .stats{gap:22px}
}
@media (max-width:380px){
  #nav{padding-left:16px;padding-right:16px}
  .brand-name{display:none}
  .nav-links{gap:18px}
}

/* ---------- REDUCED MOTION ----------
   Not scroll-jacked (native scroll drives the canvas), so scrubbing stays.
   We only disable decorative looping animations; JS follows scroll instantly. */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .hero-grain,.scroll-hint span,.loader-mark{animation:none}
  .card{transition:opacity .4s var(--ease);transform:none}
  #nav{transform:none;transition:opacity .6s var(--ease) .3s}
}

/* ============================================================
   THEME (dark default / light option) + nav state + controls
   ============================================================ */
:root{--nav-ink:#fff}

:root[data-theme="light"]{
  --bg:#f4f2ec; --bg-soft:#eae7df;
  --ink:#191b20; --ink-dim:#565a63; --ink-faint:#9aa0aa;
  --line:rgba(0,0,0,.12);
  --amber:#0e93c9;   /* light-theme accent (deeper cyan for contrast) */
  --tk-chip-top:#ffffff; --tk-chip-bot:#f2efe7;
  --tk-chip-edge:rgba(25,27,32,.14); --tk-mono:#23262e;
  --tk-accent-design:#d1327f; --tk-accent-eng:#0e93c9; --tk-accent-mkt:#6a4fd0;
  --tk-flash:#0e93c9; --tk-shadow:rgba(30,26,18,.16);
  color-scheme:light;
}
/* keep dark hero legible & keep light-theme section text visible */
.mega-mail{color:var(--ink)}
:root[data-theme="light"] .card:hover .card-meta h3{color:#000}
:root[data-theme="light"] .card-thumb{filter:saturate(.95) contrast(1) brightness(.98)}

/* nav is over the (always-dark) hero by default, then adapts once past it */
#nav{transition:opacity .8s var(--ease) .3s,transform .8s var(--ease) .3s,background .4s var(--ease)}
#nav::before{transition:opacity .4s var(--ease)}
#nav.past-hero{--nav-ink:var(--ink);
  background:color-mix(in srgb,var(--bg) 82%,transparent);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line)}
#nav.past-hero::before{opacity:0}
.brand{color:var(--nav-ink)}
.nav-links a{color:var(--nav-ink)}

.nav-right{display:flex;align-items:center;gap:clamp(16px,2.4vw,26px)}
.nav-controls{display:flex;align-items:center;gap:4px}
.ctrl-btn{background:none;border:0;cursor:pointer;color:var(--nav-ink);font-family:inherit;
  font-size:12px;font-weight:600;letter-spacing:.08em;padding:8px;opacity:.82;line-height:1;
  display:inline-flex;align-items:center;justify-content:center;
  transition:opacity .3s var(--ease),color .3s var(--ease)}
.ctrl-btn:hover{opacity:1;color:var(--amber)}
#lang-toggle{font-variant-numeric:tabular-nums;min-width:24px}
#theme-toggle svg{display:block}
:root[data-theme="dark"] #theme-toggle .ic-moon{display:none}
:root[data-theme="light"] #theme-toggle .ic-sun{display:none}

@media (max-width:380px){
  .nav-links{gap:14px}
  .nav-right{gap:12px}
}

/* ---------- EDUCATION — vertical timeline of glass cards ---------- */
.edu-time{position:relative;margin-top:clamp(24px,4vh,46px)}
.edu-time::before{content:"";position:absolute;top:16px;bottom:16px;left:13px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,#38e6ff,#8b6cff 55%,#ff53a8);opacity:.4}
.edu-item{position:relative;padding:0 0 clamp(14px,2vh,22px) clamp(40px,4vw,54px)}
.edu-item:last-child{padding-bottom:0}
.edu-item::before{content:"";position:absolute;left:6px;top:24px;width:16px;height:16px;border-radius:50%;z-index:1;
  background:#0a0c12;border:2px solid #38e6ff;box-shadow:0 0 0 4px rgba(56,230,255,.1),0 0 14px rgba(56,230,255,.45)}
.edu-item--now::before{background:linear-gradient(135deg,#38e6ff,#8b6cff);border-color:transparent;
  animation:eduPulse 2.6s var(--ease,ease) infinite}
@keyframes eduPulse{0%,100%{box-shadow:0 0 0 3px rgba(56,230,255,.28),0 0 12px rgba(56,230,255,.5)}
  50%{box-shadow:0 0 0 8px rgba(56,230,255,.05),0 0 22px rgba(56,230,255,.32)}}
.edu-card{border-radius:16px;padding:clamp(15px,1.7vw,20px) clamp(17px,1.9vw,25px);
  border:1px solid rgba(150,180,255,.12);background:linear-gradient(180deg,rgba(22,26,42,.5),rgba(12,15,26,.32));
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  transition:transform .35s cubic-bezier(.2,.7,.2,1),border-color .35s,box-shadow .35s}
.edu-item:hover .edu-card{transform:translateX(5px);border-color:rgba(56,230,255,.32);
  box-shadow:0 20px 44px -24px rgba(56,230,255,.5)}
.edu-card__top{display:flex;align-items:flex-start;justify-content:space-between;gap:14px}
.edu-lvl{display:inline-block;font-family:var(--mono);font-size:10.5px;font-weight:600;letter-spacing:.16em;
  text-transform:uppercase;background:linear-gradient(100deg,#38e6ff,#8b6cff);
  -webkit-background-clip:text;background-clip:text;color:transparent}
.edu-degree{margin-top:5px;font-size:clamp(17px,1.9vw,22px);font-weight:600;letter-spacing:-.015em;color:#fff;line-height:1.2}
.edu-dur{flex:none;font-family:var(--mono);font-size:11px;font-weight:600;letter-spacing:.03em;color:#bfeaff;
  padding:5px 12px;border-radius:999px;background:rgba(56,230,255,.09);border:1px solid rgba(56,230,255,.24);white-space:nowrap}
.edu-org{margin-top:11px;font-size:clamp(13px,1.15vw,15px);color:#aeb7cf;display:flex;align-items:center;gap:8px}
.edu-org svg{width:15px;height:15px;opacity:.6;flex:none}
.edu-year{margin-top:5px;font-family:var(--mono);font-size:11.5px;letter-spacing:.05em;color:#7c8598;font-variant-numeric:tabular-nums}
/* entrance reveal handled by the shared .reveal system (anim.js adds .reveal + .is-visible per .edu-item) */
@media (max-width:560px){
  .edu-item{padding-left:34px}
  .edu-card__top{flex-direction:column;gap:9px}
  .edu-dur{order:-1;align-self:flex-start}
}
@media (prefers-reduced-motion:reduce){
  .anim .edu-item{opacity:1;transform:none;transition:none}
  .edu-item--now::before{animation:none}
}

/* ---------- CODE / REPOSITORIES — glass card grid ---------- */
.repo-grid{list-style:none;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
  gap:clamp(12px,1.4vw,18px);margin-top:clamp(22px,3.4vh,40px);padding:0}
.repo-card{position:relative;display:flex;flex-direction:column;gap:9px;height:100%;isolation:isolate;
  padding:clamp(16px,1.8vw,22px) clamp(17px,1.9vw,23px);border-radius:14px;overflow:hidden;text-decoration:none;
  border:1px solid rgba(150,180,255,.1);background:linear-gradient(180deg,rgba(20,24,38,.44),rgba(12,15,26,.28));
  transition:transform .35s cubic-bezier(.2,.7,.2,1),box-shadow .35s,border-color .35s}
.repo-card::after{content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;pointer-events:none;opacity:0;
  background:linear-gradient(120deg,#38e6ff,#8b6cff 55%,#ff53a8);transition:opacity .35s;
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;
  mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);mask-composite:exclude}
.repo-card:hover{transform:translateY(-4px);border-color:transparent;box-shadow:0 24px 48px -26px rgba(56,230,255,.55)}
.repo-card:hover::after{opacity:1}
.repo-card__top{display:flex;align-items:center;justify-content:space-between;gap:10px}
.repo-name{min-width:0;font-family:var(--mono);font-size:clamp(13px,1.35vw,15.5px);color:#eaf0ff;font-weight:500;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.repo-arrow{flex:none;opacity:.4;font-size:.95em;color:#9fb2e0;transition:opacity .3s,transform .3s,color .3s}
.repo-card:hover .repo-arrow{opacity:1;transform:translate(2px,-2px);color:#38e6ff}
.repo-desc{font-size:clamp(12.5px,1vw,13.5px);color:#9aa4bd;line-height:1.45;flex:1 1 auto}
.repo-lang{margin-top:2px;font-family:var(--mono);font-size:10.5px;letter-spacing:.08em;text-transform:uppercase;
  color:#c3cce2;display:inline-flex;align-items:center;gap:8px}
.repo-lang::before{content:"";width:9px;height:9px;border-radius:50%;flex:none;background:var(--dot,#8a8f98);
  box-shadow:0 0 8px color-mix(in srgb,var(--dot,#8a8f98) 70%,transparent)}
@media (max-width:680px){.repo-grid{grid-template-columns:1fr}}

/* ============================================================
   LIGHT-THEME HERO — wash the (dark) video light, and flip the
   hero copy, nav and logo to dark so everything stays legible.
   ============================================================ */
.hero-wash{position:absolute;inset:0;pointer-events:none;opacity:0;background:var(--bg);
  transition:opacity .5s var(--ease);z-index:1}
/* "screen" blend lifts the dark video into a light/high-key image but keeps it
   visible (instead of an opaque white cover). Tune the grey below:
   lighter grey = whiter/less video, darker grey = more video shows through. */
:root[data-theme="light"] .hero-wash{opacity:1;background:#8f8c82;mix-blend-mode:screen}
:root[data-theme="light"] .hero-grade{opacity:0}
:root[data-theme="light"] .hero-grain{mix-blend-mode:multiply;opacity:.06}
:root[data-theme="light"] .hero-vignette{z-index:2;
  background:radial-gradient(150% 116% at 50% 34%,transparent 60%,rgba(244,242,236,.32) 100%)}

/* hero copy → dark ink with a soft light halo */
:root[data-theme="light"] .display,
:root[data-theme="light"] .word{color:#191b20;text-shadow:0 2px 34px rgba(244,242,236,.92)}
:root[data-theme="light"] .lede{color:#40444c;text-shadow:0 1px 16px rgba(244,242,236,.96)}
:root[data-theme="light"] .beat .kicker{color:#5c606a;text-shadow:0 1px 14px rgba(244,242,236,.96)}
:root[data-theme="light"] .word-sub{color:#40444c;text-shadow:0 1px 16px rgba(244,242,236,.98)}
:root[data-theme="light"] .btn{border-color:rgba(20,22,28,.5);color:#191b20;background:rgba(255,255,255,.42)}
:root[data-theme="light"] .btn:hover{background:#191b20;color:#fff;border-color:#191b20}
:root[data-theme="light"] .btn.ghost{border-color:rgba(20,22,28,.22)}
:root[data-theme="light"] .scroll-hint{color:rgba(20,22,28,.5)}
:root[data-theme="light"] .scroll-hint span{background:linear-gradient(rgba(20,22,28,.55),transparent)}

/* nav + logo over the now-light hero → dark, with a light scrim */
:root[data-theme="light"]{--nav-ink:#191b20}
:root[data-theme="light"] #nav::before{
  background:linear-gradient(180deg,rgba(244,242,236,.92),rgba(244,242,236,.45) 45%,transparent)}

/* ============================================================
   MOTION — reveal-on-scroll, heading mask, scroll progress, hover.
   Gated under .anim (added by anim.js only when motion is allowed),
   so no-JS / reduced-motion always shows everything statically.
   ============================================================ */
:root{--ease-out:cubic-bezier(.16,1,.3,1)}

.anim .reveal{opacity:0;transform:translateY(22px);filter:blur(7px);
  transition:opacity .7s var(--ease-out),transform .7s var(--ease-out),filter .7s var(--ease-out)}
.anim .reveal-fade{opacity:0;filter:blur(6px);transition:opacity .7s var(--ease-out),filter .7s var(--ease-out)}
.anim .reveal.is-visible,.anim .reveal-fade.is-visible{opacity:1;transform:none;filter:none}

/* word-mask heading reveal */
.rh-mask{display:inline-block;overflow:hidden;vertical-align:top;padding-bottom:.05em}
.anim .rh-word{display:inline-block;transform:translateY(110%);transition:transform .8s var(--ease-out)}
.anim .reveal-head.is-visible .rh-word{transform:none}

/* Work card image hover (thumb already clips via overflow:hidden) */
.card-shot{transition:transform .6s var(--ease-out)}
.card:hover .card-shot,.card:focus-within .card-shot{transform:scale(1.05)}

/* scroll-progress bar — compositor-only, omitted where unsupported */
.scroll-progress{position:fixed;top:0;left:0;height:2px;width:100%;z-index:60;
  background:var(--amber);transform:scaleX(0);transform-origin:left;pointer-events:none}
@supports (animation-timeline: scroll()){
  .scroll-progress{animation:sp-grow linear both;animation-timeline:scroll(root block)}
  @keyframes sp-grow{from{transform:scaleX(0)}to{transform:scaleX(1)}}
}

/* smooth theme crossfade via the View Transitions API (where supported) */
::view-transition-old(root),::view-transition-new(root){animation-duration:.45s}

@media (prefers-reduced-motion:reduce){
  .card:hover .card-shot,.card:focus-within .card-shot{transform:none}
  .scroll-progress{display:none}
  ::view-transition-group(*){animation:none !important}
}

/* ---------- MOBILE NAV (hamburger) ---------- */
.nav-burger{display:none;background:none;border:0;cursor:pointer;padding:8px 4px;color:var(--nav-ink);
  flex-direction:column;gap:5px;align-items:center;justify-content:center}
.nav-burger span{display:block;height:2px;width:22px;background:currentColor;border-radius:2px;
  transition:transform .3s var(--ease),opacity .3s var(--ease)}

@media (max-width:960px){
  .nav-burger{display:inline-flex}
  .nav-links{position:absolute;top:100%;left:0;right:0;flex-direction:column;gap:0;
    background:var(--bg);border-bottom:1px solid var(--line);
    padding:4px var(--pad-x) 16px;
    transform:scaleY(.85);transform-origin:top;opacity:0;pointer-events:none;
    transition:transform .28s var(--ease),opacity .28s var(--ease)}
  #nav.nav-open .nav-links{transform:none;opacity:1;pointer-events:auto}
  .nav-links a{color:var(--ink);opacity:1;padding:15px 2px;font-size:16px;letter-spacing:.01em;
    border-bottom:1px solid var(--line);width:100%}
  .nav-links a:last-child{border-bottom:0}
  .nav-links a::after{display:none}
  #nav.nav-open{--nav-ink:var(--ink);
    background:color-mix(in srgb,var(--bg) 94%,transparent);
    backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}
  #nav.nav-open::before{opacity:0}
  #nav.nav-open .nav-burger span:nth-child(1){transform:translateY(3.5px) rotate(45deg)}
  #nav.nav-open .nav-burger span:nth-child(2){transform:translateY(-3.5px) rotate(-45deg)}
}

/* ============================================================
   TOOLKIT — free-floating, cursor-interactive tool-chips inside a
   bounded stage (drift + knock + shatter/reassemble) + static grid.
   ============================================================ */
.toolkit-stage{
  position:relative; margin-top:clamp(24px,4vh,40px);
  height:clamp(360px,52vh,560px);
  border:1px solid var(--line); border-radius:16px; overflow:hidden;
  background:color-mix(in srgb, var(--bg-soft) 70%, transparent);
}
#toolkit-canvas{position:absolute; inset:0; width:100%; height:100%; display:none; cursor:default; touch-action:pan-y}
.toolkit--live #toolkit-canvas{display:block}
.toolkit-hint{margin-top:12px; font-size:13px; letter-spacing:.04em; color:var(--ink-dim)}

/* live mode: canvas runs; the <ul> stays in the DOM for SR/SEO but hidden */
.toolkit--live .toolkit-list{position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* default (no-JS / touch / reduced-motion): render the real tool grid */
.toolkit-list{
  list-style:none; display:grid;
  grid-template-columns:repeat(auto-fill,minmax(88px,1fr));
  gap:clamp(12px,1.6vw,20px); padding:clamp(18px,3vw,30px); margin:0;
  width:100%; height:100%; align-content:center; box-sizing:border-box; overflow:auto;
}
.toolkit-list li{
  display:flex; flex-direction:column; align-items:center; gap:10px;
  font-size:12px; letter-spacing:.04em; color:var(--ink-dim); text-align:center; line-height:1.3;
}
.toolkit-list li::before{
  content:attr(data-mono);
  display:grid; place-items:center; width:56px; height:56px; border-radius:14px;
  font-family:"Space Grotesk",sans-serif; font-weight:500; font-size:20px; letter-spacing:-.02em;
  color:var(--tk-mono);
  background:linear-gradient(180deg,var(--tk-chip-top),var(--tk-chip-bot));
  border:1px solid var(--tk-chip-edge);
  box-shadow:0 6px 16px var(--tk-shadow), inset 0 0 0 2px transparent;
}
.toolkit-list li[data-family="design"]::before{border-bottom:2px solid var(--tk-accent-design)}
.toolkit-list li[data-family="eng"]::before{border-bottom:2px solid var(--tk-accent-eng)}
.toolkit-list li[data-family="mkt"]::before{border-bottom:2px solid var(--tk-accent-mkt)}
.tk-pop{animation:tkPop .5s ease}
@keyframes tkPop{
  0%{transform:none}
  30%{transform:scale(.82) rotate(-6deg)}
  60%{transform:scale(1.05) rotate(3deg)}
  100%{transform:none}
}
@media (max-width:560px){ .toolkit-stage{height:clamp(340px,64vh,520px)} }

/* ============================================================
   SIDE RAIL — numeric section index + scroll-progress line (desktop-only)
   Rakamlar sayfadaki kicker'larla eşleşir: 01,02,03,04,(05=Toolkit gizli),06.
   ============================================================ */
.side-rail{position:fixed; left:clamp(18px,2.4vw,34px); top:50%; transform:translateY(-50%);
  z-index:38; display:flex; flex-direction:column; align-items:flex-start; gap:16px;
  --sr-h:40px; opacity:0; transition:opacity .8s var(--ease) .4s}
body.ready .side-rail{opacity:1}
.sr-top{display:grid; place-items:center; width:22px; height:22px; margin-left:-6px;
  font:600 12px/1 var(--mono); color:var(--ink-faint);
  border:1px solid var(--line); border-radius:7px;
  transition:color .25s var(--ease), border-color .25s var(--ease)}
.sr-top:hover,.sr-top.active{color:var(--amber); border-color:color-mix(in srgb, var(--amber) 50%, transparent)}
.sr-top:focus-visible{outline:2px solid var(--amber); outline-offset:3px}
.sr-index{position:relative; display:flex; flex-direction:column}
.sr-line{position:absolute; left:3px; top:calc(var(--sr-h)/2); bottom:calc(var(--sr-h)/2); width:1px;
  background:var(--line); border-radius:1px}
.sr-fill{position:absolute; left:0; top:0; width:100%; height:calc(var(--rail-progress,0) * 100%);
  background:linear-gradient(var(--amber), color-mix(in srgb, var(--amber) 20%, transparent));
  border-radius:1px; transition:height .18s linear}
.sr-cursor{position:absolute; left:50%; top:calc(var(--rail-progress,0) * 100%);
  width:6px; height:6px; margin:-3px 0 0 -3px; border-radius:50%; background:var(--amber);
  box-shadow:0 0 0 3px color-mix(in srgb, var(--amber) 22%, transparent); transition:top .18s linear}
.sr-index a{position:relative; display:flex; align-items:center; height:var(--sr-h); padding-left:20px;
  color:var(--ink-faint); transition:color .28s var(--ease)}
.sr-index a:hover{color:var(--ink)}
.sr-index a.active{color:var(--amber)}
.sr-index a:focus-visible{outline:2px solid var(--amber); outline-offset:3px; border-radius:6px}
.sr-dot{position:absolute; left:3px; top:50%; z-index:1; width:5px; height:5px; margin:-2.5px 0 0 -2px;
  border-radius:50%; background:var(--bg); box-shadow:inset 0 0 0 1px var(--ink-faint);
  transition:box-shadow .28s var(--ease), background .28s var(--ease)}
.sr-index a:hover .sr-dot{box-shadow:inset 0 0 0 1px var(--ink)}
.sr-index a.active .sr-dot{background:var(--amber); box-shadow:0 0 0 3px color-mix(in srgb, var(--amber) 20%, transparent)}
.sr-num{font:500 11px/1 var(--mono); letter-spacing:.14em; font-variant-numeric:tabular-nums; color:inherit}
.sr-name{position:absolute; left:34px; top:50%; transform:translate(-6px,-50%); white-space:nowrap;
  font:500 11px/1 var(--mono); letter-spacing:.16em; text-transform:uppercase; color:var(--ink);
  padding:6px 9px; border-radius:7px; background:color-mix(in srgb, var(--bg) 72%, transparent);
  border:1px solid var(--line); backdrop-filter:blur(10px); -webkit-backdrop-filter:blur(10px);
  box-shadow:0 8px 24px rgba(0,0,0,.28); opacity:0; visibility:hidden; pointer-events:none;
  transition:opacity .26s var(--ease), transform .26s var(--ease-out), visibility 0s .26s}
.sr-index a:hover .sr-name,.sr-index a:focus-visible .sr-name{opacity:1; visibility:visible; transform:translate(0,-50%); transition-delay:0s}
.sr-index a.active .sr-name{color:var(--amber)}
@media (max-width:960px){ .side-rail{display:none} }
@media (prefers-reduced-motion:reduce){
  .side-rail{opacity:1; transition:none}
  .sr-fill,.sr-cursor,.sr-name,.sr-num,.sr-dot,.sr-top,.sr-index a{transition:none}
}

/* ============================================================
   WORK SHOWCASE — alternating vertical panels (title / subtitle / chips)
   ============================================================ */
.showcase{display:flex; flex-direction:column; gap:clamp(80px,15vh,180px); margin-top:clamp(36px,6vh,72px)}
.show-item{display:grid; grid-template-columns:1.1fr .9fr; gap:clamp(32px,5vw,80px); align-items:center}
.show-item:nth-of-type(even) .show-visual{order:2}      /* alternate: even items put the image on the right */
.show-item:nth-of-type(even) .show-info{order:1}
.show-visual{position:relative; display:block; overflow:hidden; border-radius:14px; border:1px solid var(--line);
  aspect-ratio:16/10; background:var(--bg-soft)}
.show-visual img{width:100%; height:100%; object-fit:cover; object-position:top center; display:block;
  transform:scale(1.015); transition:transform 1.1s var(--ease-out), filter .6s var(--ease)}
.show-visual:hover img{transform:scale(1.06)}
.show-visual::after{content:""; position:absolute; inset:0; pointer-events:none; border-radius:14px;
  box-shadow:inset 0 0 60px rgba(0,0,0,.35); opacity:.5}
.show-idx{display:inline-block; font-family:var(--mono); font-size:13px; letter-spacing:.24em; color:var(--amber)}
.show-title{margin-top:16px; font-weight:300; font-size:clamp(30px,4.6vw,64px); line-height:1.0;
  letter-spacing:.004em; text-transform:uppercase; text-wrap:balance}
.show-sub{margin-top:18px; font-size:clamp(15px,1.45vw,18px); line-height:1.5; letter-spacing:.02em;
  color:var(--ink-dim); max-width:42ch; text-wrap:pretty}
.chips{list-style:none; display:flex; flex-wrap:wrap; gap:9px; margin-top:24px}
.chips li{font-family:var(--mono); font-size:12.5px; letter-spacing:.01em; color:var(--ink-dim);
  padding:7px 14px; border:1px solid var(--line); border-radius:10px;
  transition:border-color .35s var(--ease), color .35s var(--ease)}
.show-item:hover .chips li{border-color:color-mix(in srgb,var(--amber) 34%,var(--line)); color:var(--ink)}
.show-link{display:inline-flex; align-items:center; gap:8px; margin-top:28px; font-size:14px; letter-spacing:.05em;
  text-transform:uppercase; color:var(--ink); transition:color .3s var(--ease)}
.show-arr{display:inline-block; transition:transform .32s var(--ease-out)}
.show-link:hover{color:var(--amber)}
.show-link:hover .show-arr{transform:translate(4px,-4px)}
@media (max-width:860px){
  .showcase{gap:clamp(56px,10vh,96px)}
  .show-item{grid-template-columns:1fr; gap:22px}
  .show-item:nth-of-type(even) .show-visual{order:0}
  .show-item:nth-of-type(even) .show-info{order:0}
  .show-sub{max-width:56ch}
}

/* ============================================================
   FX — custom cursor (amber companion), mouse-follow glow, 3D tilt
   (cinematic palette; desktop + motion only, wired in fx.js)
   ============================================================ */
.cur,.cur-ring{position:fixed;top:0;left:0;z-index:9999;pointer-events:none;border-radius:50%;
  transform:translate(-50%,-50%);display:none;will-change:transform}
body.cursor-on .cur,body.cursor-on .cur-ring{display:block}
.cur{width:6px;height:6px;background:var(--amber);box-shadow:0 0 10px var(--amber)}
.cur-ring{width:30px;height:30px;border:1.5px solid color-mix(in srgb,var(--amber) 55%,transparent);
  transition:width .26s var(--ease-out),height .26s var(--ease-out),border-color .26s,background .26s}
body.cur-hover .cur-ring{width:56px;height:56px;border-color:var(--amber);
  background:color-mix(in srgb,var(--amber) 9%,transparent)}
@media (hover:none),(pointer:coarse){ .cur,.cur-ring{display:none!important} }

/* mouse-follow amber glow over the work project visuals */
.show-visual{transition:transform .35s var(--ease-out)}
.show-visual::before{content:"";position:absolute;inset:0;z-index:3;pointer-events:none;border-radius:inherit;
  background:radial-gradient(230px 230px at var(--gx,50%) var(--gy,50%),
    color-mix(in srgb,var(--amber) 26%,transparent),transparent 66%);
  opacity:0;transition:opacity .4s var(--ease);mix-blend-mode:screen}
.show-visual:hover::before{opacity:1}

/* ---------- WORK showcase — livelier directional reveal ---------- */
/* the container itself doesn't move; its two halves slide in from opposite sides */
.anim .show-item.reveal{opacity:1;transform:none;filter:none}
.anim .show-item .show-visual{opacity:0;transform:translateX(-52px) scale(.955);filter:blur(10px);
  transition:opacity .9s var(--ease-out),transform 1.05s var(--ease-out),filter .9s var(--ease-out)}
.anim .show-item:nth-of-type(even) .show-visual{transform:translateX(52px) scale(.955)}
.anim .show-item .show-info{opacity:0;transform:translateX(36px);filter:blur(7px);
  transition:opacity .9s var(--ease-out) .12s,transform .95s var(--ease-out) .12s,filter .9s var(--ease-out) .12s}
.anim .show-item:nth-of-type(even) .show-info{transform:translateX(-36px)}
.anim .show-item.is-visible .show-visual,.anim .show-item.is-visible .show-info{opacity:1;transform:none;filter:none}
/* chips settle in sequence after the info */
.anim .show-item .chips li{opacity:0;transform:translateY(9px);
  transition:opacity .5s var(--ease-out),transform .5s var(--ease-out)}
.anim .show-item.is-visible .chips li{opacity:1;transform:none}
.anim .show-item.is-visible .chips li:nth-child(1){transition-delay:.40s}
.anim .show-item.is-visible .chips li:nth-child(2){transition-delay:.47s}
.anim .show-item.is-visible .chips li:nth-child(3){transition-delay:.54s}
.anim .show-item.is-visible .chips li:nth-child(4){transition-delay:.61s}
@media (prefers-reduced-motion:reduce){
  .anim .show-item .show-visual,.anim .show-item .show-info,.anim .show-item .chips li{transition:none;filter:none;transform:none;opacity:1}
}