:root {
  --bg: #07080c;
  --text: #eef1f7;
  --muted: #9aa3b6;
  --accent: #6ea8fe;
  --accent-2: #a78bfa;
  --accent-3: #34d8c9;
  --border: rgba(255, 255, 255, 0.08);
  --glass: rgba(255, 255, 255, 0.035);
  --radius: 18px;
  --maxw: 1080px;
  --mono: 'JetBrains Mono', ui-monospace, monospace;
  --display: 'Space Grotesk', system-ui, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
a { color: inherit; text-decoration: none; }

/* ---- Back to top ---- */
.back-to-top {
  position: fixed; bottom: 24px; right: 24px; z-index: 40;
  width: 46px; height: 46px; border-radius: 50%; cursor: pointer;
  border: 1px solid var(--border); background: rgba(13,16,24,.8); backdrop-filter: blur(10px);
  color: var(--accent); font-size: 20px; line-height: 1;
  opacity: 0; transform: translateY(12px); pointer-events: none;
  transition: opacity .25s, transform .25s, border-color .2s, box-shadow .25s;
}
.back-to-top.show { opacity: 1; transform: none; pointer-events: auto; }
.back-to-top:hover { border-color: var(--accent); box-shadow: 0 6px 20px rgba(110,168,254,.4); }

/* ---- Scroll progress ---- */
.scroll-progress {
  position: fixed; top: 0; left: 0; height: 3px; width: 0;
  background: linear-gradient(90deg, var(--accent), var(--accent-2), var(--accent-3));
  z-index: 50; box-shadow: 0 0 12px rgba(110,168,254,.6); transition: width .1s linear;
}

/* ---- Animated background ---- */
.bg { position: fixed; inset: 0; z-index: -1; overflow: hidden; }
.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.5;
  animation: float 22s ease-in-out infinite;
}
.b1 { width: 520px; height: 520px; background: #2a4cff; top: -120px; left: -100px; }
.b2 { width: 460px; height: 460px; background: #7c3aed; top: 30%; right: -120px; animation-delay: -7s; }
.b3 { width: 400px; height: 400px; background: #0fb9a8; bottom: -140px; left: 30%; animation-delay: -14s; }
@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(40px, -50px) scale(1.1); }
  66% { transform: translate(-30px, 30px) scale(0.95); }
}
.grid-overlay {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, #000 40%, transparent 100%);
}
.grain {
  position: absolute; inset: 0; opacity: 0.04;
  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='0.9' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---- Nav ---- */
.nav {
  position: sticky; top: 0; z-index: 20;
  background: rgba(7, 8, 12, 0.55);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 66px; }
.brand { font-family: var(--display); font-weight: 700; font-size: 20px; letter-spacing: 1px; }
.brand span { color: var(--accent); }
.nav nav { display: flex; gap: 26px; }
.nav nav a { font-family: var(--mono); color: var(--muted); font-size: 13px; transition: color .2s; }
.nav nav a:hover { color: var(--text); }

/* ---- Shared ---- */
.mono-label {
  font-family: var(--mono); font-size: 13px; color: var(--accent);
  letter-spacing: .5px; margin-bottom: 18px; display: flex; align-items: center; gap: 8px;
}
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent-3); box-shadow: 0 0 12px var(--accent-3); animation: pulse 2s infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .3; } }

.grad {
  background: linear-gradient(110deg, var(--accent) 0%, var(--accent-2) 50%, var(--accent-3) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

h1 { font-family: var(--display); font-size: clamp(44px, 7vw, 80px); font-weight: 700; line-height: 1.02; letter-spacing: -2px; }
h2 { font-family: var(--display); font-size: clamp(28px, 4vw, 40px); font-weight: 600; letter-spacing: -1px; margin-bottom: 28px; }
h3 { font-family: var(--display); }

/* reveal animation */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s cubic-bezier(.2,.7,.2,1); }
.reveal.in { opacity: 1; transform: none; }

/* ---- Hero ---- */
.hero { padding: 88px 24px 70px; }
.hero-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 50px; align-items: center; }
.lede { font-size: clamp(16px, 2vw, 19px); color: var(--muted); max-width: 580px; margin-top: 6px; }
.lede strong { color: var(--text); }

.cta { display: flex; gap: 12px; margin-top: 34px; flex-wrap: wrap; }
.btn {
  font-family: var(--mono); font-size: 14px; font-weight: 500;
  padding: 12px 22px; border-radius: 11px; border: 1px solid var(--border);
  transition: transform .15s, box-shadow .25s, border-color .2s, background .2s;
}
.btn:hover { transform: translateY(-2px); }
.btn.primary {
  background: linear-gradient(110deg, var(--accent), var(--accent-2));
  color: #06070a; border-color: transparent; font-weight: 600;
  box-shadow: 0 8px 28px rgba(110,168,254,.35);
}
.btn.primary:hover { box-shadow: 0 12px 36px rgba(110,168,254,.5); }
.btn.ghost { background: var(--glass); }
.btn.ghost:hover { border-color: var(--accent); color: #fff; }

.stats { display: flex; gap: 32px; margin-top: 40px; flex-wrap: wrap; }
.stats div { display: flex; flex-direction: column; }
.stats strong { font-family: var(--display); font-size: 26px; color: #fff; }
.stats span { font-family: var(--mono); font-size: 12px; color: var(--muted); }

/* hero aside */
.hero-aside { display: flex; flex-direction: column; gap: 24px; align-items: center; }
.avatar-ring {
  padding: 4px; border-radius: 50%;
  background: conic-gradient(from 180deg, var(--accent), var(--accent-2), var(--accent-3), var(--accent));
  box-shadow: 0 0 40px rgba(124,58,237,.35);
}
.avatar { width: 150px; height: 150px; border-radius: 50%; object-fit: cover; display: block; border: 3px solid var(--bg); }

.code-card {
  width: 100%; background: rgba(13,16,24,.7); border: 1px solid var(--border);
  border-radius: 14px; padding: 16px 18px; backdrop-filter: blur(10px);
  box-shadow: 0 20px 50px rgba(0,0,0,.4);
}
.code-dots { display: flex; gap: 7px; margin-bottom: 12px; }
.code-dots span { width: 11px; height: 11px; border-radius: 50%; background: #2a2f3d; }
.code-dots span:nth-child(1) { background: #ff5f56; }
.code-dots span:nth-child(2) { background: #ffbd2e; }
.code-dots span:nth-child(3) { background: #27c93f; }
.code-card pre { font-family: var(--mono); font-size: 12.5px; line-height: 1.7; color: var(--muted); overflow-x: auto; }
.c-key { color: var(--accent-2); }
.c-prop { color: var(--accent); }
.c-str { color: var(--accent-3); }

/* ---- Sections ---- */
.section { padding: 78px 24px; }
.section-sub { color: var(--muted); max-width: 640px; margin: -14px 0 38px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 36px; }
.grid-2 p { color: var(--muted); }

/* skills */
.skills { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 18px; }
.skill-group { background: var(--glass); border: 1px solid var(--border); border-radius: var(--radius); padding: 26px; backdrop-filter: blur(8px); transition: border-color .25s, transform .2s; }
.skill-group:hover { border-color: rgba(110,168,254,.4); transform: translateY(-3px); }
.skill-group h3 { font-size: 15px; color: var(--accent); margin-bottom: 18px; font-family: var(--mono); }
.chips { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; }
.chips li {
  display: inline-flex; align-items: center; gap: 7px;
  font-family: var(--mono); font-size: 12.5px; color: var(--muted);
  background: rgba(255,255,255,.04); border: 1px solid var(--border);
  padding: 6px 11px; border-radius: 8px; transition: color .2s, border-color .2s, background .2s;
}
.chips li i { font-size: 15px; color: var(--accent); transition: color .2s; }
.skill-group:hover .chips li { color: var(--text); }
.chips li:hover { border-color: rgba(110,168,254,.5); background: rgba(110,168,254,.08); }
.chips li:hover i { color: var(--accent-3); }

/* timeline */
.timeline { position: relative; padding-left: 28px; }
.timeline::before {
  content: ""; position: absolute; left: 7px; top: 6px; bottom: 6px; width: 2px;
  background: linear-gradient(var(--accent), var(--accent-2), transparent);
}
.tl-item { position: relative; padding-bottom: 34px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-dot {
  position: absolute; left: -28px; top: 5px; width: 16px; height: 16px; border-radius: 50%;
  background: var(--bg); border: 2px solid var(--accent); box-shadow: 0 0 12px rgba(110,168,254,.5);
}
.tl-date { font-family: var(--mono); font-size: 12.5px; color: var(--accent-3); }
.tl-body h3 { font-size: 19px; font-weight: 600; margin: 4px 0 2px; }
.tl-org { font-family: var(--mono); font-size: 13px; color: var(--muted); }
.tl-body p { color: var(--muted); font-size: 14.5px; margin-top: 8px; max-width: 640px; }

/* cards */
.cards { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.card {
  position: relative; background: var(--glass); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 28px; display: flex; flex-direction: column;
  backdrop-filter: blur(8px); overflow: hidden;
  transition: transform .2s, border-color .25s, box-shadow .3s;
}
.card::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(400px circle at var(--mx, 50%) var(--my, 0%), rgba(110,168,254,.12), transparent 60%);
  opacity: 0; transition: opacity .3s;
}
.card:hover { transform: translateY(-5px); border-color: rgba(167,139,250,.45); box-shadow: 0 18px 50px rgba(0,0,0,.45); }
.card:hover::before { opacity: 1; }
.card-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 14px; }
.card h3 { font-size: 21px; font-weight: 600; }
.card .arrow { color: var(--accent); font-size: 18px; transition: transform .2s; }
.card:hover .arrow { transform: translate(3px, -3px); }
.card p { color: var(--muted); font-size: 14.5px; flex: 1; position: relative; z-index: 1; }
.tags { display: flex; gap: 8px; margin-top: 20px; flex-wrap: wrap; }
.tags span {
  font-family: var(--mono); font-size: 11.5px; color: var(--accent);
  background: rgba(110,168,254,.1); border: 1px solid rgba(110,168,254,.25);
  padding: 4px 10px; border-radius: 999px;
}
.more { margin-top: 30px; }
.more a { font-family: var(--mono); font-size: 14px; color: var(--accent); }

/* contact */
.contact-card {
  background: var(--glass); border: 1px solid var(--border); border-radius: 24px;
  padding: 56px 40px; text-align: center; backdrop-filter: blur(10px);
}
.contact-card .mono-label { justify-content: center; }
.contact-card .cta { justify-content: center; }
.contact-sub { color: var(--muted); margin-bottom: 30px; }

/* footer */
footer { border-top: 1px solid var(--border); padding: 30px 0; }
.foot-inner { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }
.foot-inner .mono { font-family: var(--mono); font-size: 12.5px; color: var(--muted); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; }
}

@media (max-width: 820px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-aside { order: -1; }
  .grid-2, .skills, .cards { grid-template-columns: 1fr; }
  .nav nav { gap: 16px; }
  .section { padding: 60px 24px; }
}