:root {
  --bg: #05070c;
  --card: rgba(12, 18, 28, 0.72);
  --line: rgba(0, 240, 255, 0.22);
  --cyan: #00f0ff;
  --py: #4b8bbe;
  --yellow: #ffd43b;
  --text: #e8f1ff;
  --muted: #8aa0b8;
  --font-d: "Syne", sans-serif;
  --font-m: "IBM Plex Mono", monospace;
}

html[data-theme="light"] {
  --bg: #eef2f6;
  --card: rgba(255, 255, 255, 0.78);
  --line: rgba(0, 110, 130, 0.28);
  --cyan: #0089a8;
  --py: #2c5d82;
  --yellow: #a8790b;
  --text: #0b1220;
  --muted: #51606f;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-m);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  transition: background .3s ease, color .3s ease;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }

.bg-grid {
  position: fixed; inset: 0; z-index: -2; pointer-events: none;
  background-image:
    linear-gradient(rgba(0,240,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,240,255,.05) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at center, black 40%, transparent 80%);
}
html[data-theme="light"] .bg-grid { opacity: .4; }

.orb {
  position: fixed; z-index: -1; border-radius: 50%; filter: blur(80px);
  pointer-events: none; opacity: .45;
}
.orb-a {
  width: 420px; height: 420px; background: #123a6b;
  top: -80px; right: -60px; animation: drift 14s ease-in-out infinite;
}
.orb-b {
  width: 360px; height: 360px; background: #0a4a45;
  bottom: 10%; left: -80px; animation: drift 18s ease-in-out infinite reverse;
}
html[data-theme="light"] .orb { opacity: .18; }
@keyframes drift {
  50% { transform: translate(30px, 20px) scale(1.08); }
}

.nav {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; gap: 20px;
  padding: 16px 6vw;
  background: rgba(5,7,12,.7);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
html[data-theme="light"] .nav { background: rgba(238,242,246,.75); }
.logo {
  font-family: var(--font-d); font-weight: 800; letter-spacing: .08em;
}
.logo span { color: var(--cyan); }
.nav nav { margin-left: auto; display: flex; gap: 22px; }
.nav nav a { color: var(--muted); font-size: 13px; }
.nav nav a:hover { color: var(--cyan); }

.status {
  display: flex; align-items: center; gap: 8px;
  font-size: 11px; color: #7dffc1; letter-spacing: .12em;
}
.status i {
  width: 8px; height: 8px; border-radius: 50%; background: #39ff9c;
  box-shadow: 0 0 10px #39ff9c; animation: blink 1.8s infinite;
}
@keyframes blink { 50% { opacity: .35; } }
.burger { display: none; cursor: pointer; }
.burger span {
  display: block; width: 22px; height: 2px; background: var(--text); margin: 5px 0;
}

/* Theme toggle switch */
.theme-toggle {
  background: none; border: none; cursor: pointer; padding: 0;
}
.toggle-track {
  display: block; width: 40px; height: 20px; border-radius: 999px;
  border: 1px solid var(--line); position: relative; background: rgba(255,255,255,.05);
}
.toggle-thumb {
  position: absolute; top: 2px; left: 2px; width: 14px; height: 14px;
  border-radius: 50%; background: var(--cyan); transition: left .25s ease, background .25s ease;
}
html[data-theme="light"] .toggle-thumb { left: 21px; background: var(--yellow); }

.hero {
  display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px;
  align-items: center; padding: 80px 6vw 70px;
}
.kicker {
  color: var(--cyan); letter-spacing: .28em; font-size: 12px;
  text-transform: uppercase; margin-bottom: 16px;
}
h1, h2, h3 { font-family: var(--font-d); line-height: 1.1; }
h1 { font-size: clamp(2.1rem, 4.5vw, 4.2rem); font-weight: 800; }
h1 em { font-style: normal; color: var(--cyan); text-shadow: 0 0 24px rgba(0,240,255,.35); }

.role-line {
  margin-top: 16px; font-size: 1.05rem; color: var(--py); min-height: 1.4em;
}
.typed-cursor {
  display: inline-block; width: 2px; height: 1em; background: var(--cyan);
  margin-left: 3px; vertical-align: middle; animation: blinkCur .8s steps(1) infinite;
}
@keyframes blinkCur { 50% { opacity: 0; } }

.lead { color: var(--muted); margin-top: 18px; max-width: 52ch; line-height: 1.7; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.btn {
  padding: 12px 18px; border: 1px solid var(--line); font-size: 13px;
  transition: .25s ease; display: inline-block;
}
.btn-primary {
  background: linear-gradient(90deg, var(--py), #1f6aa5);
  border-color: transparent; box-shadow: 0 0 24px rgba(75,139,190,.35); color: #fff;
}
.btn-primary:hover { transform: translateY(-2px); }
.btn-ghost:hover { border-color: var(--cyan); color: var(--cyan); }

.terminal {
  background: rgba(8,12,20,.85);
  border: 1px solid var(--line);
  box-shadow: 0 20px 60px rgba(0,0,0,.45), 0 0 0 1px rgba(255,212,59,.08);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px));
}
html[data-theme="light"] .terminal { background: rgba(255,255,255,.85); }
.term-bar {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 14px; border-bottom: 1px solid var(--line);
}
.dot { width: 10px; height: 10px; border-radius: 50%; }
.d-red { background: #ff5f56; }
.d-yellow { background: var(--yellow); }
.d-green { background: #27c93f; }
.term-title { margin-left: 8px; color: var(--muted); font-size: 12px; }
.terminal pre {
  padding: 18px 16px 22px; font-size: 13px; line-height: 1.65; overflow-x: auto;
}
.cmt { color: #5d7188; }
.kw { color: var(--py); }
.cls { color: var(--yellow); }
.fn { color: var(--cyan); }
.str { color: #7dffc1; }

.section { padding: 72px 6vw; border-top: 1px solid var(--line); }
.idx { color: var(--cyan); font-size: 12px; letter-spacing: .2em; margin-bottom: 10px; }
h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); margin-bottom: 22px; }
.split { display: grid; grid-template-columns: 1.2fr .8fr; gap: 32px; }
.split p { color: var(--muted); line-height: 1.8; }
.facts { list-style: none; display: grid; gap: 12px; }
.facts li {
  padding: 12px 14px; background: var(--card); border: 1px solid var(--line);
}
.facts span { display: block; color: var(--cyan); font-size: 11px; letter-spacing: .14em; }

.chips { display: flex; flex-wrap: wrap; gap: 10px; }
.chips span {
  padding: 8px 12px; border: 1px solid var(--line); color: var(--muted); font-size: 12px;
}
.chips span:hover {
  color: var(--bg); background: var(--cyan); border-color: var(--cyan);
}

.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card {
  padding: 22px; background: var(--card); border: 1px solid var(--line);
  backdrop-filter: blur(10px); transition: .25s ease;
}
.card:hover {
  transform: translateY(-6px);
  border-color: var(--cyan);
  box-shadow: 0 12px 40px rgba(0,240,255,.12);
}
.card.draft { border-style: dashed; }
.tag { color: var(--yellow); font-size: 11px; letter-spacing: .12em; margin-bottom: 10px; display: flex; align-items: center; gap: 8px; }
.badge {
  font-size: 10px; padding: 2px 8px; border: 1px solid var(--line);
  border-radius: 999px; color: var(--muted); letter-spacing: .08em;
}
.card h3 { margin-bottom: 10px; }
.card p { color: var(--muted); font-size: 14px; line-height: 1.6; margin-bottom: 16px; }
.card a { color: var(--cyan); font-size: 13px; }

.contact .lead { margin-top: -8px; }
footer {
  padding: 28px 6vw 40px; border-top: 1px solid var(--line);
  display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  color: var(--muted); font-size: 12px;
}
.tiny { opacity: .7; }

/* ---------- Custom cursor ---------- */
.cursor-dot, .cursor-ring {
  position: fixed; top: 0; left: 0; border-radius: 50%;
  pointer-events: none; z-index: 9999; transform: translate(-50%, -50%);
}
.cursor-dot { width: 6px; height: 6px; background: var(--cyan); }
.cursor-ring {
  width: 34px; height: 34px; border: 1px solid var(--cyan);
  transition: width .2s, height .2s, background .2s, border-color .2s;
}
.cursor-ring.hovered { width: 56px; height: 56px; background: rgba(0,240,255,.08); }
body.cursor-enabled, body.cursor-enabled a, body.cursor-enabled button,
body.cursor-enabled label, body.cursor-enabled input {
  cursor: none;
}
@media (pointer: coarse) {
  .cursor-dot, .cursor-ring { display: none; }
}

@media (max-width: 900px) {
  .hero, .split, .cards { grid-template-columns: 1fr; }
  .nav nav {
    display: none; position: absolute; top: 58px; left: 0; right: 0;
    flex-direction: column; padding: 16px 6vw 22px;
    background: rgba(5,7,12,.96); border-bottom: 1px solid var(--line);
  }
  #nav-toggle:checked ~ nav { display: flex; }
  .burger { display: block; }
  .status { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}