/* ===== Reset ===== */
*,*::before,*::after{box-sizing:border-box}
html,body{margin:0;padding:0}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
ul{margin:0;padding:0;list-style:none}
button,input,textarea{font:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

/* ===== Theme tokens ===== */
:root{
  --bg:#0b0c10; --bg-soft:#12141b; --card:#0f1117;
  --text:#e7eaf1; --muted:#a6adbb; --border:#222632;
  --accent:#7c5cff; --accent-2:#22c55e; --shadow:0 10px 30px rgba(0,0,0,.35)
}
@media (prefers-color-scheme: light){
  :root{
    --bg:#fff; --bg-soft:#f7f8fb; --card:#fff;
    --text:#0b1220; --muted:#5b6472; --border:#e8ecf2;
    --accent:#5b43ff; --accent-2:#14a44d; --shadow:0 10px 24px rgba(10,20,40,.06)
  }
}
[data-theme="light"]{--bg:#fff;--bg-soft:#f7f8fb;--card:#fff;--text:#0b1220;--muted:#5b6472;--border:#e8ecf2;--accent:#5b43ff;--accent-2:#14a44d;--shadow:0 10px 24px rgba(10,20,40,.06)}
[data-theme="dark"]{--bg:#0b0c10;--bg-soft:#12141b;--card:#0f1117;--text:#e7eaf1;--muted:#a6adbb;--border:#222632;--accent:#7c5cff;--accent-2:#22c55e;--shadow:0 10px 30px rgba(0,0,0,.35)}

/* ===== Layout ===== */
body{font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.6}
.container{width:min(1100px,92%);margin-inline:auto}
.section-pad{padding:4.5rem 0}
.section-pad.alt{background:var(--bg-soft)}
.muted{color:var(--muted)}
.grid{display:grid;gap:1.25rem}
.cards-3{grid-template-columns:repeat(3,minmax(0,1fr))}
@media (max-width:900px){.cards-3{grid-template-columns:1fr}}

/* ===== Header ===== */
.site-header{position:sticky;top:0;z-index:50;backdrop-filter:saturate(180%) blur(10px);background:color-mix(in oklab,var(--bg),transparent 20%);border-bottom:1px solid var(--border)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:.75rem 0}
.brand{display:inline-flex;align-items:center;gap:.6rem;font-weight:800}
.brand img{width:28px;height:28px}
.brand-text{letter-spacing:.2px}
.theme-toggle{border:1px solid var(--border);background:var(--card);color:var(--text);padding:.45rem .6rem;border-radius:.6rem}

/* ===== Hero & common blocks ===== */
.h1{font-size:clamp(2rem,3.2vw + 1rem,3.1rem);line-height:1.15;margin:0 0 .75rem}
.h2{font-size:clamp(1.5rem,1.2vw + 1rem,2rem);line-height:1.2;margin:0 0 .75rem}
.lead{font-size:1.08rem;color:var(--muted);max-width:60ch}
.photo-frame{border:1px solid var(--border);background:var(--card);padding:.75rem;border-radius:1rem;box-shadow:var(--shadow)}

/* ===== Cards ===== */
.card{background:var(--card);border:1px solid var(--border);border-radius:1rem;padding:1.1rem;box-shadow:var(--shadow);height:100%}
.card-icon{font-size:1.5rem;color:var(--accent)}
.tags{display:flex;gap:.5rem;flex-wrap:wrap;margin-top:.35rem}
.tags span{border:1px solid var(--border);border-radius:999px;padding:.2rem .55rem;font-size:.8rem;color:var(--muted)}
.project .project-img img{border-radius:.7rem;border:1px solid var(--border);width:100%;height:auto}

/* ===== Hub (big stylish navigation buttons) ===== */
.hub{margin-top:1.25rem;display:grid;gap:.8rem;grid-template-columns:repeat(5,minmax(0,1fr))}
@media (max-width:900px){.hub{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:520px){.hub{grid-template-columns:1fr}}
.hub-btn{
  display:flex;align-items:center;justify-content:center;gap:.55rem;
  padding:1rem 1.1rem;border-radius:.9rem;border:1px solid var(--border);
  background:linear-gradient(180deg, color-mix(in oklab,var(--card),transparent 10%), color-mix(in oklab,var(--card),black 6%));
  box-shadow:var(--shadow); font-weight:600;
  transition:transform .08s ease, filter .2s ease, background .25s ease;
}
.hub-btn i{font-size:1.25rem;color:var(--accent)}
.hub-btn:hover{transform:translateY(-1px);filter:brightness(1.04)}

/* ===== Footer & reveal ===== */
.site-footer{border-top:1px solid var(--border);padding:2rem 0}
.footer-inner{display:flex;justify-content:space-between;align-items:center;gap:1rem;flex-wrap:wrap}
.footer-links{display:flex;gap:1rem}
.reveal{opacity:0;transform:translateY(14px);transition:opacity .6s ease, transform .6s ease}
.reveal.in{opacity:1;transform:none}