/* Minimal, responsive, accessible, no external deps */
:root{
  --bg: #0b1220;
  --fg: #0f172a;
  --text: #0b1220;
  --muted:#475569;
  --card:#f8fafc;
  --link:#0ea5e9;
  --accent:#2563eb;
  --btn:#0ea5e9;
  --btn-text:#ffffff;
  --ring: #93c5fd;
}
@media (prefers-color-scheme: dark){
  :root{
    --bg:#0b1220;
    --fg:#0b1220;
    --text:#e5e7eb;
    --muted:#94a3b8;
    --card:#0f172a;
    --link:#38bdf8;
    --accent:#60a5fa;
    --btn:#22d3ee;
    --btn-text:#0b1220;
    --ring:#7dd3fc;
  }
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Inter,Ubuntu,"Helvetica Neue",Arial,sans-serif;
  line-height:1.6;
  color:var(--text);
  /* gradient background using dark cyan → navy → deep navy */
  background: linear-gradient(165deg, #038785 0%, #0b1b4a 55%, #07122e 100%);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
.skip-link{
  position:absolute;left:-999px;top:auto;width:1px;height:1px;overflow:hidden;
}
.skip-link:focus{left:1rem;top:1rem;width:auto;height:auto;background:#fff;color:#000;padding:.5rem 1rem;border-radius:.5rem}
.site-header{
  position:sticky;top:0;backdrop-filter:saturate(180%) blur(10px);
  background:rgba(2,6,23,.7);border-bottom:1px solid rgba(148,163,184,.2);z-index:10;
}
.nav{max-width:960px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;padding:.75rem 1rem}
.menu-btn{display:none}
.nav-list{display:flex;gap:1rem;list-style:none;margin:0;padding:0}
.nav-list a{color:var(--muted);text-decoration:none}
.nav-list a:hover{color:var(--link)}

/* Shared content width + side padding */
#main { padding: 0 1.5rem; max-width: 960px; margin: 0 auto; }

.hero{
  max-width:960px;margin:3rem auto 2rem;padding:0 1rem;text-align:center;
}
.hero h1{font-size:clamp(2rem,6vw,3rem);margin:.25rem 0 .5rem}
.subtitle{color:var(--muted);font-size:1.1rem;margin:0 0 1rem}
.section{max-width:960px;margin:2.5rem auto;padding:0 1rem}
.chips{display:flex;flex-wrap:wrap;gap:.5rem;list-style:none;padding:0;margin:0}
.chips li{background:var(--card);border:1px solid rgba(148,163,184,.2);padding:.4rem .6rem;border-radius:999px}
.timeline{list-style:none;padding:0;margin:0;border-left:2px solid rgba(148,163,184,.25)}
.timeline li{display:grid;grid-template-columns:9rem 1fr;gap:1rem;padding:1rem 0 1rem 1rem}
.timeline .time{color:var(--muted)}
.card{background:var(--card);padding:1rem;border-radius:.75rem;border:1px solid rgba(148,163,184,.2)}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1rem}
.project{background:var(--card);border:1px solid rgba(148,163,184,.2);border-radius:.75rem;padding:1rem}
.links{list-style:none;padding:0;margin:0;display:grid;gap:.5rem}
.btn{display:inline-block;border:1px solid rgba(148,163,184,.35);padding:.6rem .9rem;border-radius:.6rem;text-decoration:none;color:var(--text);background:transparent}
.btn:hover{border-color:var(--link)}
.btn.primary{background:var(--btn);color:var(--btn-text);border-color:transparent;box-shadow:0 0 0 2px transparent}
.btn.primary:focus{outline:none;box-shadow:0 0 0 2px var(--ring)}
.btn.small{font-size:.9rem;padding:.45rem .7rem}
.site-footer{max-width:960px;margin:3rem auto 2rem;padding:0 1rem;color:var(--muted);text-align:center}

/* ===== MOBILE NAV (single, unified block) ===== */
@media (max-width: 780px) {
  .menu-btn {
    display: inline-block;
    background: none;
    border: 1px solid rgba(148,163,184,.4);
    color: var(--text);
    padding: .5rem .75rem;
    border-radius: .5rem;
  }
  .nav-list {
    display: none;                /* hidden until opened */
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    margin: 0;
    padding: .75rem 1rem;
    background: rgba(0,0,0,.25);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    border-top: 1px solid rgba(255,255,255,.12);
    flex-direction: column;
  }
  .nav-list.open { display: block; }
  .nav-list li { margin: .25rem 0; }
  .nav-list a { display: block; padding: .5rem 0; }
  .site-header { position: relative; z-index: 10; }
}

/* ===== EXPERIENCE TIMELINE (stack on mobile) ===== */
.timeline {
  list-style: none;
  margin: 0;
  padding: 0;
}
.timeline > li {
  display: grid;
  grid-template-columns: 200px 1fr;  /* time | description on desktop */
  gap: .5rem 1.25rem;
  align-items: start;
  padding: 1rem 0;
  border-top: 1px solid rgba(255,255,255,.12);
}
.timeline > li:first-child { border-top: none; }
.timeline .time {
  font-weight: 600;
  opacity: .9;
  white-space: nowrap;
}
.timeline .card h3 { margin: 0 0 .25rem 0; }
@media (max-width: 780px) {
  .timeline > li { grid-template-columns: 1fr; }
  .timeline .time { margin-bottom: .25rem; }
}

.languages {
  margin: 14px 0 0;
  display: flex;
  gap: 12px;
  justify-content: center;
  align-items: center;
}

.flag-pill {
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;        /* flag emoji size */
  line-height: 1;
  border-radius: 50%;
  background: #fff;       /* subtle frame behind emoji */
  border: 2px solid rgba(255,255,255,0.85);
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
  user-select: none;
}