:root{
  --bg: #0b1220;
  --panel: rgba(255,255,255,0.06);
  --panel-2: rgba(255,255,255,0.09);
  --text: rgba(255,255,255,0.92);
  --muted: rgba(255,255,255,0.70);
  --border: rgba(255,255,255,0.14);
  --accent: #7c5cff;
  --accent-2: #34d399;
  --shadow: 0 18px 60px rgba(0,0,0,0.35);
  --radius: 18px;
  --max: 1120px;
}

[data-theme="light"]{
  --bg: #f6f7fb;
  --panel: rgba(10, 18, 32, 0.06);
  --panel-2: rgba(10, 18, 32, 0.08);
  --text: rgba(10,18,32,0.92);
  --muted: rgba(10,18,32,0.70);
  --border: rgba(10,18,32,0.14);
  --shadow: 0 18px 60px rgba(10,18,32,0.12);
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
}

a{ color: inherit; text-decoration: none; }
a:hover{ text-decoration: underline; text-underline-offset: 3px; }

.container{
  width: min(var(--max), calc(100% - 40px));
  margin-inline: auto;
}

.skip-link{
  position:absolute;
  left:-999px;
  top:0;
  padding:10px 12px;
  background: var(--text);
  color: var(--bg);
  border-radius: 10px;
  z-index: 9999;
}
.skip-link:focus{ left: 14px; top: 14px; }

.site-header{
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(12px);
  background: color-mix(in oklab, var(--bg) 82%, transparent);
  border-bottom: 1px solid var(--border);
}

.header-inner{
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
}

.brand{
  display:flex;
  align-items:center;
  gap: 10px;
}
.brand-mark{
  width: 38px;
  height: 38px;
  display:grid;
  place-items:center;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), color-mix(in oklab, var(--accent) 20%, var(--accent-2)));
  box-shadow: var(--shadow);
  font-weight: 800;
  letter-spacing: 0.4px;
}
.brand-text{ color: var(--text); font-size: 14px; }
.brand-text strong{ font-weight: 700; }

.nav{ display:flex; align-items:center; gap: 10px; }
.nav-toggle{
  display:none;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
}
.burger{
  display:block;
  width: 18px;
  height: 2px;
  background: var(--text);
  position: relative;
  margin: 0 auto;
}
.burger::before, .burger::after{
  content:"";
  position:absolute;
  left:0;
  width: 18px;
  height: 2px;
  background: var(--text);
}
.burger::before{ top: -6px; }
.burger::after{ top: 6px; }

.nav-menu{
  display:flex;
  align-items:center;
  gap: 14px;
}
.nav-menu a{
  padding: 8px 10px;
  border-radius: 12px;
  color: var(--muted);
}
.nav-menu a:hover{ background: var(--panel); text-decoration: none; color: var(--text); }
.nav-cta{
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text) !important;
}
.theme-toggle{
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  padding: 8px 10px;
  border-radius: 12px;
  cursor: pointer;
}
.theme-toggle:hover{ background: var(--panel-2); }

.hero{
  position:relative;
  padding: 56px 0 30px;
  overflow:hidden;
}
.hero-bg{
  position:absolute;
  inset: -30% -20% auto -20%;
  height: 520px;
  background:
    radial-gradient(closest-side, color-mix(in oklab, var(--accent) 40%, transparent), transparent 70%),
    radial-gradient(closest-side, color-mix(in oklab, var(--accent-2) 30%, transparent), transparent 70%);
  filter: blur(20px);
  opacity: 0.8;
  pointer-events:none;
}

.hero-inner{
  display:grid;
  grid-template-columns: 1.4fr 0.9fr;
  gap: 24px;
  align-items: start;
}

.kicker{
  display:inline-block;
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--panel);
  border: 1px solid var(--border);
  color: var(--muted);
  margin: 0 0 12px;
  font-weight: 600;
  font-size: 13px;
}

h1{
  margin:0 0 12px;
  font-size: clamp(32px, 4vw, 50px);
  line-height: 1.08;
  letter-spacing: -0.03em;
}
.accent{
  background: linear-gradient(135deg, var(--accent), color-mix(in oklab, var(--accent-2) 55%, var(--accent)));
  -webkit-background-clip: text;
  background-clip:text;
  color: transparent;
}

.subhead{
  margin: 0 0 20px;
  color: var(--muted);
  max-width: 62ch;
  font-size: 16px;
}

.hero-actions{
  display:flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap: 10px;
  padding: 11px 14px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  font-weight: 650;
  box-shadow: none;
  cursor: pointer;
}
.btn:hover{ background: var(--panel-2); text-decoration: none; }
.btn.primary{
  background: linear-gradient(135deg, var(--accent), color-mix(in oklab, var(--accent) 25%, var(--accent-2)));
  border-color: color-mix(in oklab, var(--accent) 40%, var(--border));
}
.btn.ghost{ background: transparent; }

.quick-facts{
  display:grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin-top: 14px;
}
.fact{
  display:flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--panel);
}
.fact-label{ color: var(--muted); font-size: 13px; }
.fact-value{ font-weight: 600; }

.hero-card{
  border: 1px solid var(--border);
  background: var(--panel);
  border-radius: calc(var(--radius) + 6px);
  padding: 18px;
  box-shadow: var(--shadow);
  position: sticky;
  top: 86px;
}

.stat-grid{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.stat{
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--panel-2);
  padding: 14px;
}
.stat-number{
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.02em;
}
.stat-label{ color: var(--muted); font-size: 13px; margin-top: 4px; }

.divider{
  height: 1px;
  background: var(--border);
  margin: 16px 0;
}

.note{ margin:0; color: var(--muted); }

.section{
  padding: 48px 0;
  border-top: 1px solid var(--border);
}
.section-head{
  display:grid;
  gap: 8px;
  margin-bottom: 18px;
}
.section-head h2{
  margin:0;
  font-size: 26px;
  letter-spacing: -0.02em;
}
.section-head p{
  margin:0;
  color: var(--muted);
  max-width: 80ch;
}

.cards{
  display:grid;
  gap: 14px;
}
.cards.two{ grid-template-columns: repeat(2, minmax(0, 1fr)); }
.cards.three{ grid-template-columns: repeat(3, minmax(0, 1fr)); }
.cards.four{ grid-template-columns: repeat(4, minmax(0, 1fr)); }

.card{
  border: 1px solid var(--border);
  background: var(--panel);
  border-radius: var(--radius);
  padding: 18px;
}
.card h3{ margin:0 0 10px; font-size: 18px; letter-spacing: -0.01em; }
.card p{ margin:0; color: var(--muted); }
.card.mini p{ margin-top: 6px; }

.bullets{
  margin: 10px 0 0;
  padding-left: 18px;
  color: var(--muted);
}
.bullets li{ margin: 6px 0; }

.tags{
  display:flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}
.tags.small{ margin-top: 12px; }
.tag{
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--panel) 65%, transparent);
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 13px;
  color: var(--text);
}
.tags.small .tag{ font-size: 12px; padding: 5px 9px; }

.skill-groups{
  display:grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.timeline{
  list-style: none;
  margin: 0;
  padding: 0;
  display:grid;
  gap: 14px;
}
.timeline-item{
  display:grid;
  grid-template-columns: 220px 1fr;
  gap: 14px;
  align-items: start;
}
.timeline-meta{
  position: sticky;
  top: 96px;
  display:grid;
  gap: 8px;
}
.pill{
  display:inline-flex;
  width: fit-content;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--muted);
  font-weight: 650;
  font-size: 13px;
}
.timeline-role{
  font-weight: 750;
  letter-spacing: -0.01em;
  color: var(--text);
}
.timeline-body h3{
  margin-top: 0;
}

label{
  display:grid;
  gap: 6px;
  margin-top: 10px;
}
input, textarea{
  width: 100%;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--panel) 70%, transparent);
  padding: 11px 12px;
  color: var(--text);
  outline: none;
}
input::placeholder, textarea::placeholder{ color: color-mix(in oklab, var(--muted) 85%, transparent); }
input:focus, textarea:focus{
  border-color: color-mix(in oklab, var(--accent) 60%, var(--border));
  box-shadow: 0 0 0 4px color-mix(in oklab, var(--accent) 18%, transparent);
}

.muted{ color: var(--muted); }
.tiny{ font-size: 12px; margin-top: 10px; }

.site-footer{
  border-top: 1px solid var(--border);
  padding: 18px 0;
}
.footer-inner{
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 14px;
  color: var(--muted);
}
/* Floating "Back to top" button */
.back-top{
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 1000;

  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--bg) 86%, transparent);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow);

  color: var(--text);
  text-decoration: none;

  /* hidden by default; JS will show it */
  opacity: 0;
  pointer-events: none;

  transition: opacity 200ms ease, transform 200ms ease, background 200ms ease;
  transform: translateY(6px);
}

.back-top:hover{
  background: color-mix(in oklab, var(--bg) 78%, transparent);
  text-decoration: none;
  transform: translateY(0);
}

/* Give a little extra room on small screens + safe-area */
@media (max-width: 820px){
  .back-top{
    right: 14px;
    bottom: calc(14px + env(safe-area-inset-bottom));
  }
}

.sr-only{
  position:absolute;
  width:1px;
  height:1px;
  padding:0;
  margin:-1px;
  overflow:hidden;
  clip:rect(0,0,0,0);
  white-space:nowrap;
  border:0;
}

/* Responsive */
@media (max-width: 980px){
  .hero-inner{ grid-template-columns: 1fr; }
  .hero-card{ position: relative; top: auto; }
  .timeline-item{ grid-template-columns: 1fr; }
  .timeline-meta{ position: relative; top: auto; }
}

@media (max-width: 820px){
  .cards.two, .cards.three, .cards.four{ grid-template-columns: 1fr; }
  .skill-groups{ grid-template-columns: 1fr; }

  .nav-toggle{ display:inline-flex; align-items:center; justify-content:center; }
  .nav-menu{
    position: absolute;
    right: 20px;
    top: 68px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    min-width: 220px;
    padding: 10px;
    border-radius: 16px;
    border: 1px solid var(--border);
    background: color-mix(in oklab, var(--bg) 86%, transparent);
    backdrop-filter: blur(14px);
    box-shadow: var(--shadow);
  }
  .nav-menu a, .theme-toggle{ width: 100%; text-align: left; }
  .nav-menu.open{ display:flex; }
}