:root {
  --bg:#08090c; --bg2:#0d0f14; --fg:#e8eaf0; --muted:#8a90a0;
  --line:#1b1f2a; --accent:#5eead4; --accent2:#818cf8;
  --mono: ui-monospace, "SF Mono", "Cascadia Code", Consolas, monospace;
  --glow: rgba(94,234,212,.10);
  --panel: rgba(255,255,255,.025);
  --soft: #c9cedb; --on-accent: #06201c; --accent-hover: #7ff0dc; --hover-line: #2c3345;
}
:root[data-theme="light"] {
  --bg:#f7f8fa; --bg2:#ffffff; --fg:#10131a; --muted:#5c6474;
  --line:#dfe3ea; --accent:#0d9488; --accent2:#4f46e5;
  --glow: rgba(13,148,136,.10);
  --panel: rgba(0,0,0,.02);
  --soft:#2a3140; --on-accent:#ffffff; --accent-hover:#0f766e; --hover-line:#b9c1d0;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font: 16px/1.65 system-ui, -apple-system, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}
body::before {
  content: ""; position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(600px circle at 15% 0%, var(--glow), transparent 60%),
    radial-gradient(700px circle at 85% 30%, var(--glow), transparent 60%),
    linear-gradient(180deg, var(--bg2), var(--bg) 60%);
}
body::after {
  content: ""; position: fixed; inset: 0; z-index: -1; pointer-events: none; opacity: .35;
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(circle at 50% 0%, #000, transparent 70%);
  -webkit-mask-image: radial-gradient(circle at 50% 0%, #000, transparent 70%);
}
.wrap { max-width: 760px; margin-inline: auto; padding: 96px 24px 64px; }
a { color: var(--accent); text-decoration: none; transition: color .2s; }
a:hover { color: var(--fg); text-decoration: none; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

/* nav */
.nav {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; gap: 8px;
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  background: color-mix(in srgb, var(--bg) 72%, transparent); border-bottom: 1px solid var(--line);
  padding-inline: max(24px, calc((100vw - 760px) / 2));
}
.nav ul { display: flex; gap: 4px; list-style: none; margin: 0; padding: 12px 0; overflow-x: auto; margin-left: auto; scrollbar-width: none; }
.nav ul::-webkit-scrollbar { display: none; }
.nav a { font: 500 .8125rem/1 var(--mono); color: var(--muted); padding: 8px 12px; border-radius: 6px; white-space: nowrap; }
.nav a:hover, .nav a:focus-visible { color: var(--fg); background: var(--panel); }
.nav .brand { font: 700 .875rem/1 var(--mono); color: var(--fg); padding: 8px 0; letter-spacing: -.02em; }
.nav .brand:hover { background: none; color: var(--accent); }
.theme {
  cursor: pointer; background: none; border: 1px solid var(--line); border-radius: 6px;
  color: var(--muted); font-size: .875rem; line-height: 1; padding: 7px 9px; margin-left: 8px;
  transition: color .2s, border-color .2s;
}
.theme:hover { color: var(--accent); border-color: var(--accent); }

/* filter */
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
.filter {
  cursor: pointer; font: 500 .8125rem/1 var(--mono); padding: 8px 12px; border-radius: 6px;
  border: 1px solid var(--line); background: none; color: var(--muted);
  transition: color .2s, border-color .2s, background .2s;
}
.filter:hover { color: var(--fg); border-color: var(--hover-line); }
.filter.active { color: var(--accent); border-color: var(--accent); background: var(--glow); }
.empty { color: var(--muted); font-size: .9375rem; }

#bg { position: fixed; inset: 0; z-index: -2; pointer-events: none; opacity: .55; }
.wrap { position: relative; }

header { margin-bottom: 72px; }
.eyebrow {
  font: 600 .75rem/1 var(--mono); letter-spacing: .18em; text-transform: uppercase;
  color: var(--accent); margin: 0 0 20px;
}
h1 {
  font-size: clamp(2.4rem, 7vw, 4rem); line-height: 1.05; letter-spacing: -.03em;
  margin: 0 0 16px; font-weight: 800;
}
h1 .accent { background: linear-gradient(90deg, var(--accent), var(--accent2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.role { color: var(--muted); margin: 0; font-size: 1.05rem; }
.role strong { color: var(--fg); font-weight: 600; }
.cta { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; }
.cta a {
  position: relative; overflow: hidden; isolation: isolate;
  padding: 11px 18px; border-radius: 8px; border: 1px solid var(--line);
  font: 600 .875rem/1 var(--mono); color: var(--fg); transition: border-color .2s, background .2s, color .2s;
}
.cta a::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: radial-gradient(120px circle at var(--mx, 50%) var(--my, 50%), var(--glow), transparent 70%);
  opacity: 0; transition: opacity .25s;
}
.cta a:hover::before, .cta a:focus-visible::before { opacity: 1; }
.cta a:hover { border-color: var(--accent); color: var(--accent); background: rgba(94,234,212,.06); }
.cta a.primary::before { background: radial-gradient(120px circle at var(--mx, 50%) var(--my, 50%), rgba(255,255,255,.35), transparent 70%); }
.cta a.primary { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.cta a.primary:hover { background: var(--accent-hover); color: var(--on-accent); }

/* shine sweep on hover — shared by buttons */
.cta a::after, .links a::after, .copy::after, form button::after {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background: linear-gradient(105deg, transparent 35%, rgba(255,255,255,.22) 50%, transparent 65%);
  transform: translateX(-120%);
  opacity: 0;
}
.cta a.primary::after, form button::after {
  background: linear-gradient(105deg, transparent 35%, rgba(255,255,255,.55) 50%, transparent 65%);
}.cta a:hover::after, .links a:hover::after, .copy:hover::after, form button:hover::after {
  opacity: 1; animation: shine .7s cubic-bezier(.4,0,.2,1);
}
@keyframes shine { to { transform: translateX(120%); } }
form button { position: relative; overflow: hidden; isolation: isolate; }

.magnet { will-change: transform; transition: transform .35s cubic-bezier(.22,1,.36,1); }

section { margin-bottom: 56px; scroll-margin-top: 72px; }
h2 {
  font: 600 .7rem/1 var(--mono); letter-spacing: .2em; text-transform: uppercase;
  color: var(--muted); margin: 0 0 20px; display: flex; align-items: center; gap: 12px;
}
h2::after { content: ""; flex: 1; height: 1px; background: var(--line); }
p { margin: 0 0 12px; }
.lead { font-size: 1.0625rem; color: var(--soft); }

.tags { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; padding: 0; margin: 0; }
.tags li {
  font: 500 .8125rem/1 var(--mono); padding: 8px 12px; border-radius: 6px;
  border: 1px solid var(--line); background: var(--panel); color: var(--soft);
}
.tags li a { color: inherit; display: block; }
.tags li:hover { border-color: var(--accent); color: var(--accent); }

/* skills */
.skills { display: grid; gap: 16px; }
.skill-row { display: grid; grid-template-columns: 140px 1fr; gap: 16px; align-items: center; }
.skill-row span { font: 500 .8125rem/1.4 var(--mono); color: var(--soft); }
.bar { height: 6px; border-radius: 99px; background: var(--line); overflow: hidden; }
.bar i { display: block; height: 100%; border-radius: 99px; background: linear-gradient(90deg, var(--accent), var(--accent2)); width: var(--w, 0); }
@media (max-width: 520px) { .skill-row { grid-template-columns: 1fr; gap: 6px; } }

@media (max-width: 600px) {
  .wrap { padding: 56px 18px 48px; }
  header { margin-bottom: 48px; }
  .nav { padding-inline: 16px; gap: 4px; }
  .nav .brand { font-size: .8125rem; }
  .nav a { padding: 8px 8px; font-size: .75rem; }
  .theme { margin-left: 4px; padding: 6px 8px; }
  .cta a, .links a, .copy { padding: 10px 14px; }
  .links { gap: 8px; }
  .grid { grid-template-columns: 1fr; }
  .timeline li { padding-left: 18px; }
  form { max-width: none; }
  h1 { font-size: clamp(2rem, 11vw, 2.8rem); }
}

@media (hover: none) {
  .magnet { transition: none; }
  .cta a:hover::after, .links a:hover::after, .copy:hover::after, form button:hover::after { animation: none; opacity: 0; }
  .project:hover { transform: none; }
}

/* project */
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; }
.project {
  position: relative; display: flex; flex-direction: column; gap: 10px;
  padding: 20px; border: 1px solid var(--line); border-radius: 14px;
  background: linear-gradient(180deg, var(--panel), transparent);
  transition: border-color .3s cubic-bezier(.22,1,.36,1), transform .3s cubic-bezier(.22,1,.36,1), box-shadow .3s cubic-bezier(.22,1,.36,1);
}
.project::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none;
  background: radial-gradient(220px circle at var(--mx, 50%) var(--my, 0%), var(--glow), transparent 70%);
  opacity: 0; transition: opacity .3s;
}
.project:hover::before { opacity: 1; }
.project:hover { border-color: var(--hover-line); transform: translateY(-3px); box-shadow: 0 16px 40px -20px var(--glow); }
.project h3 { margin: 0; font-size: 1.05rem; }
.project p { margin: 0; color: var(--muted); font-size: .9375rem; flex: 1; }
.project .tags li { font-size: .75rem; padding: 5px 9px; }
.project .more { font: 500 .8125rem/1 var(--mono); }

/* timeline */
.timeline { list-style: none; padding: 0; margin: 0; border-left: 1px solid var(--line); }
.timeline li { position: relative; padding: 0 0 24px 24px; }
.timeline li::before {
  content: ""; position: absolute; left: -4.5px; top: 7px;
  width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 3px rgba(94,234,212,.15);
}
.timeline li:last-child { padding-bottom: 0; }
.timeline time { font: 500 .75rem/1 var(--mono); color: var(--accent); }
.timeline h3 { margin: 6px 0 2px; font-size: 1rem; }
.timeline h3 a { color: var(--fg); transition: color .2s; }
.timeline h3 a:hover { color: var(--accent); }
.timeline p { margin: 0; color: var(--muted); font-size: .9375rem; }

/* contact form */
form { display: grid; gap: 12px; max-width: 480px; }
form label { font: 500 .75rem/1 var(--mono); color: var(--muted); display: grid; gap: 6px; }
form input, form textarea {
  font: inherit; color: var(--fg); background: var(--panel);
  border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px;
  transition: border-color .2s;
}
form input:focus, form textarea:focus { outline: none; border-color: var(--accent); }
form textarea { resize: vertical; min-height: 110px; }
form button {
  justify-self: start; cursor: pointer; padding: 11px 20px; border-radius: 8px;
  border: 1px solid var(--accent); background: var(--accent); color: var(--on-accent);
  font: 600 .875rem/1 var(--mono); transition: background .2s;
}
form button:hover { background: var(--accent-hover); }

.links { display: flex; flex-wrap: wrap; gap: 10px; list-style: none; padding: 0; margin: 0; }
.links a {
  position: relative; overflow: hidden; isolation: isolate;
  display: inline-block; padding: 10px 16px; border-radius: 8px;
  border: 1px solid var(--line); font: 500 .875rem/1 var(--mono); color: var(--fg);
  transition: border-color .2s, color .2s, background .2s;
}
.links a::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: radial-gradient(120px circle at var(--mx, 50%) var(--my, 50%), var(--glow), transparent 70%);
  opacity: 0; transition: opacity .25s;
}
.links a:hover::before, .links a:focus-visible::before { opacity: 1; }
.links a:hover { border-color: var(--accent); color: var(--accent); background: rgba(94,234,212,.05); }

footer {
  margin-top: 80px; padding-top: 24px; border-top: 1px solid var(--line);
  color: var(--muted); font: 400 .8125rem/1.6 var(--mono);
}
footer .cursor { color: var(--accent); animation: blink 1.1s steps(2, start) infinite; }
@keyframes blink { to { visibility: hidden; } }

/* reveal on scroll (progressive enhancement: visible by default) */
.js .reveal { opacity: 0; transform: translateY(12px); transition: opacity .6s cubic-bezier(.22,1,.36,1), transform .6s cubic-bezier(.22,1,.36,1); }
.js .reveal.in { opacity: 1; transform: none; }
/* failsafe: if JS never marks .reveal, show everything after 1.2s */
@keyframes revealFallback { to { opacity: 1; transform: none; } }
.js .reveal { animation: revealFallback 0s 1.2s forwards; }

/* scroll progress */
.progress {
  position: fixed; top: 0; left: 0; z-index: 20; height: 2px; width: 100%;
  transform: scaleX(var(--p, 0)); transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  pointer-events: none;
}

/* active nav link */
.nav a.active { color: var(--accent); background: var(--glow); }

/* copy email */
.copy {
  position: relative; overflow: hidden; isolation: isolate;
  cursor: pointer; background: none; border: 1px solid var(--line); border-radius: 8px;
  color: var(--fg); font: 500 .875rem/1 var(--mono); padding: 10px 16px;
  transition: border-color .2s, color .2s, background .2s;
}
.copy:hover { border-color: var(--accent); color: var(--accent); background: var(--glow); }
.copy.done { color: var(--accent); border-color: var(--accent); }
.copy::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: radial-gradient(120px circle at var(--mx, 50%) var(--my, 50%), var(--glow), transparent 70%);
  opacity: 0; transition: opacity .25s;
}
.copy:hover::before { opacity: 1; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  footer .cursor { animation: none; }
  .project:hover { transform: none; box-shadow: none; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .js .reveal { opacity: 1; transform: none; }
}