:root {
  --bg: #0b0f14;
  --bg-2: #10161d;
  --card: #131b24;
  --line: #1f2a36;
  --text: #d7e0ea;
  --muted: #8b9bb0;
  --accent: #3ddc97;
  --accent-2: #4cc2ff;
  --warn: #ffb86b;
  --radius: 12px;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Consolas, monospace;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
body::before {
  content: "";
  position: fixed; inset: 0;
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: .18;
  pointer-events: none;
  z-index: -1;
}
a { color: var(--accent-2); text-decoration: none; }
a:hover { text-decoration: underline; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

.wrap { width: min(1080px, 100% - 32px); margin-inline: auto; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--accent); color: #000; padding: 8px 12px; border-radius: 6px; z-index: 100; }
.skip:focus { left: 16px; }

/* Nav */
.nav { position: sticky; top: 0; z-index: 50; background: rgba(11, 15, 20, .85); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.brand { font-family: var(--mono); font-weight: 700; color: var(--text); }
.brand:hover { text-decoration: none; }
.prompt { color: var(--accent); }
.nav-links { display: flex; gap: 22px; }
.nav-links a { color: var(--muted); font-size: 14px; font-family: var(--mono); }
.nav-links a:hover { color: var(--accent); text-decoration: none; }
.nav-toggle { display: none; background: none; border: 1px solid var(--line); border-radius: 8px; padding: 8px; cursor: pointer; }
.nav-toggle span { display: block; width: 20px; height: 2px; background: var(--text); margin: 4px 0; }

/* Hero */
.hero { padding: 72px 0 56px; }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center; }
.eyebrow { font-family: var(--mono); color: var(--accent); font-size: 14px; margin: 0 0 8px; }
h1 { font-size: clamp(40px, 6vw, 64px); line-height: 1.05; margin: 0 0 16px; letter-spacing: -0.02em; }
.lead { font-size: 18px; color: var(--muted); margin: 0 0 18px; max-width: 60ch; }
.status { display: flex; gap: 10px; align-items: baseline; background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--radius); padding: 12px 14px; margin: 0 0 24px; font-size: 15px; }
.status strong { color: var(--text); }
.dot { width: 9px; height: 9px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 4px rgba(61, 220, 151, .15); flex: none; transform: translateY(-1px); }
.cta { display: flex; flex-wrap: wrap; gap: 12px; }

.btn { display: inline-flex; align-items: center; gap: 8px; padding: 11px 18px; border-radius: 10px; border: 1px solid var(--line); color: var(--text); font-weight: 600; font-size: 15px; background: var(--bg-2); transition: border-color .15s, transform .15s; }
.btn:hover { border-color: var(--accent); text-decoration: none; transform: translateY(-1px); }
.btn.primary { background: var(--accent); color: #04130c; border-color: var(--accent); }
.btn.primary:hover { filter: brightness(1.08); }

/* Terminal */
.terminal { background: #070a0e; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; box-shadow: 0 20px 60px rgba(0, 0, 0, .45); }
.term-bar { display: flex; align-items: center; gap: 7px; padding: 10px 14px; background: var(--bg-2); border-bottom: 1px solid var(--line); }
.term-bar i { width: 11px; height: 11px; border-radius: 50%; background: #ff5f57; }
.term-bar i:nth-child(2) { background: #febc2e; }
.term-bar i:nth-child(3) { background: #28c840; }
.term-bar span { margin-left: 8px; font-family: var(--mono); font-size: 12px; color: var(--muted); }
.term-body { margin: 0; padding: 18px; font-family: var(--mono); font-size: 13.5px; line-height: 1.7; color: var(--text); white-space: pre-wrap; overflow-x: auto; }
.term-body .p { color: var(--accent); }
.term-body .ok { color: var(--warn); }
.cursor { color: var(--accent); animation: blink 1.1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

/* Sections */
.section { padding: 64px 0; border-top: 1px solid var(--line); }
h2 { font-size: 28px; margin: 0 0 28px; letter-spacing: -0.01em; }
.num { font-family: var(--mono); color: var(--accent); font-size: 18px; margin-right: 6px; }
h3 { font-size: 18px; margin: 0 0 4px; }
.prose p { margin: 0 0 14px; color: var(--text); }

.about-grid { display: grid; grid-template-columns: 1.6fr 1fr; gap: 36px; }
.facts { list-style: none; margin: 0; padding: 18px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); }
.facts li { padding: 10px 0; border-bottom: 1px dashed var(--line); }
.facts li:last-child { border-bottom: 0; }
.facts span { display: block; font-family: var(--mono); font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: .06em; }

/* Timeline */
.subhead { font-family: var(--mono); font-size: 14px; font-weight: 500; color: var(--accent); text-transform: uppercase; letter-spacing: .08em; margin: 0 0 18px; padding-bottom: 8px; border-bottom: 1px dashed var(--line); }
.timeline + .subhead { margin-top: 12px; }
.timeline { list-style: none; margin: 0; padding: 0; }
.timeline > li { display: grid; grid-template-columns: 170px 1fr; gap: 24px; padding: 0 0 28px; }
.when { font-family: var(--mono); font-size: 13px; color: var(--muted); padding-top: 3px; }
.where { color: var(--muted); font-size: 14px; margin: 0 0 8px; }
.what ul { margin: 0 0 10px; padding-left: 18px; }
.what li { margin: 4px 0; }

.tags { display: flex; flex-wrap: wrap; gap: 6px; margin: 10px 0 0; }
.tags span { font-family: var(--mono); font-size: 12px; color: var(--accent-2); background: rgba(76, 194, 255, .08); border: 1px solid rgba(76, 194, 255, .25); padding: 2px 8px; border-radius: 999px; }

/* Cards */
.cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; display: flex; flex-direction: column; transition: border-color .15s, transform .15s; }
.card:hover { border-color: rgba(61, 220, 151, .5); transform: translateY(-2px); }
.card.featured { border-color: rgba(61, 220, 151, .35); }
.card p { margin: 0 0 8px; color: var(--muted); }
.card h3 { color: var(--text); margin-bottom: 8px; }
.kicker { font-family: var(--mono); font-size: 12px; color: var(--accent) !important; text-transform: uppercase; letter-spacing: .05em; }
.card .link { margin-top: auto; padding-top: 12px; font-weight: 600; font-size: 14px; }

/* Skills */
.skills { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.skill { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; }
.skill h3 { font-family: var(--mono); font-size: 14px; color: var(--accent); margin-bottom: 8px; }
.skill p { margin: 0; color: var(--text); font-size: 15px; }

/* Education */
.edu { list-style: none; margin: 0; padding: 0; }
.edu li { display: grid; grid-template-columns: 170px 1fr; gap: 24px; padding: 0 0 20px; }
.edu p { margin: 0; color: var(--muted); }

/* Contact */
.contact-links { display: flex; flex-wrap: wrap; gap: 12px; }

.footer { border-top: 1px solid var(--line); padding: 28px 0; color: var(--muted); font-size: 14px; font-family: var(--mono); }
.footer p { margin: 0; }

/* Events */
.section-intro { color: var(--muted); margin: -12px 0 24px; }
.events { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.event { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column; }
.event-body { padding: 20px 22px; }
.event-body p { margin: 0 0 8px; color: var(--muted); }
.event-body h3 { color: var(--text); margin-bottom: 2px; }
.event-place { font-size: 14px; }
.event-photos { display: grid; gap: 2px; background: var(--line); }
.event-photos.multi { grid-template-columns: repeat(2, 1fr); }
.event-photos .photo { padding: 0; border: 0; background: none; cursor: zoom-in; display: block; aspect-ratio: 16 / 10; overflow: hidden; }
.event-photos.multi .photo:first-child:nth-last-child(odd) { grid-column: 1 / -1; }
.event-photos img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .25s; }
.event-photos .photo:hover img { transform: scale(1.03); }

.lightbox { max-width: min(1100px, 94vw); max-height: 92vh; padding: 0; border: 1px solid var(--line); border-radius: var(--radius); background: #070a0e; color: var(--text); }
.lightbox::backdrop { background: rgba(0, 0, 0, .8); }
.lightbox img { display: block; max-width: 100%; max-height: 80vh; margin: 0 auto; }
.lightbox p { margin: 0; padding: 10px 16px; font-size: 14px; color: var(--muted); }
.lightbox-close { position: absolute; top: 8px; right: 8px; width: 36px; height: 36px; border-radius: 50%; border: 1px solid var(--line); background: rgba(11, 15, 20, .8); color: var(--text); font-size: 22px; line-height: 1; cursor: pointer; }

/* Certificates */
.cert-filters { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 20px; }
.chip { font-family: var(--mono); font-size: 13px; color: var(--muted); background: var(--bg-2); border: 1px solid var(--line); border-radius: 999px; padding: 6px 14px; cursor: pointer; }
.chip:hover { border-color: var(--accent); color: var(--text); }
.chip.active { background: rgba(61, 220, 151, .12); border-color: var(--accent); color: var(--accent); }
.certs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.cert { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column; }
.cert[hidden] { display: none; }
.cert-thumb { padding: 0; border: 0; border-bottom: 1px solid var(--line); background: #fff; cursor: zoom-in; display: block; aspect-ratio: 1.414 / 1; overflow: hidden; }
.cert-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .25s; }
.cert-thumb:hover img { transform: scale(1.03); }
.cert-body { padding: 14px 16px 16px; display: flex; flex-direction: column; flex: 1; }
.cert-body h3 { font-size: 15px; line-height: 1.4; margin-bottom: 4px; }
.cert-meta { font-family: var(--mono); font-size: 12px; color: var(--muted); margin: 0 0 6px; }
.cert-note { font-size: 13px; color: var(--muted); margin: 0 0 6px; }
.cert-body .link { margin-top: auto; padding-top: 6px; font-size: 13px; font-weight: 600; }
.lightbox-link { display: inline-block; margin: 0 16px 12px; font-weight: 600; font-size: 14px; }
.lightbox-link[hidden] { display: none; }

/* Responsive */
@media (max-width: 860px) {
  .hero { padding-top: 40px; }
  .hero-grid, .about-grid { grid-template-columns: 1fr; gap: 32px; }
  .cards, .events { grid-template-columns: 1fr; }
  .certs { grid-template-columns: 1fr 1fr; }
  .skills { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .nav-toggle { display: block; }
  .nav-links { display: none; position: absolute; top: 60px; left: 0; right: 0; flex-direction: column; gap: 0; background: var(--bg); border-bottom: 1px solid var(--line); }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 14px 16px; border-top: 1px solid var(--line); }
  .skills { grid-template-columns: 1fr; }
  .certs { grid-template-columns: 1fr; }
  .timeline > li, .edu li { grid-template-columns: 1fr; gap: 4px; }
  .term-body { font-size: 12.5px; }
  .btn { flex: 1 1 auto; justify-content: center; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .cursor { animation: none; }
  .btn, .card, .event-photos img, .cert-thumb img { transition: none; }
}