:root {
  --bg: #060b16;
  --bg-2: #0a1222;
  --surface: rgba(255, 255, 255, .045);
  --surface-hover: rgba(255, 255, 255, .075);
  --border: rgba(148, 176, 214, .18);
  --border-strong: rgba(148, 176, 214, .32);
  --text: #e8eef8;
  --muted: #a3b3c9;
  --heading: #f6f9ff;
  --accent: #22d3ee;
  --accent-strong: #67e8f9;
  --accent-ink: #031219;
  --radius: 16px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; background: var(--bg); color-scheme: dark; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  font-size: 1.0625rem;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
.container { width: min(1120px, 100% - 3rem); margin-inline: auto; }
.narrow { max-width: 780px; }
a { color: var(--accent-strong); text-underline-offset: 3px; transition: color .2s ease; }
a:hover { color: #fff; }
:focus-visible { outline: 3px solid var(--accent-strong); outline-offset: 3px; border-radius: 4px; }
.skip-link {
  position: absolute; left: -999px; top: 0; background: var(--accent); color: var(--accent-ink);
  padding: .75rem 1.1rem; z-index: 100; font-weight: 700; border-radius: 0 0 10px 0;
}
.skip-link:focus { left: 0; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(6, 11, 22, .72);
  -webkit-backdrop-filter: saturate(160%) blur(16px); backdrop-filter: saturate(160%) blur(16px);
  border-bottom: 1px solid var(--border);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; min-height: 68px; gap: 1rem; }
.logo { font-weight: 800; font-size: 1.15rem; letter-spacing: -.01em; color: var(--heading); text-decoration: none; }
.logo { display: inline-flex; align-items: center; gap: .55rem; }
.logo-mark { color: var(--accent); flex: none; filter: drop-shadow(0 0 8px rgba(34, 211, 238, .55)); transition: transform .6s ease; }
.logo:hover .logo-mark { transform: rotate(45deg); }
.logo-ai { color: var(--accent); }
.logo:hover { color: var(--heading); }
.nav-list { display: flex; gap: 1.6rem; list-style: none; margin: 0; padding: 0; align-items: center; }
.nav-list a { color: var(--muted); text-decoration: none; font-weight: 500; font-size: .95rem; transition: color .2s ease; }
.nav-list a:hover { color: #fff; }
.nav-list .nav-cta {
  background: transparent; color: var(--accent-strong); padding: .5rem 1.05rem; border-radius: 999px;
  border: 1px solid var(--accent); font-weight: 600;
}
.nav-list .nav-cta:hover { background: var(--accent); color: var(--accent-ink); }
.nav-toggle {
  display: none; background: var(--surface); border: 1px solid var(--border-strong); border-radius: 999px;
  padding: .5rem 1rem; font: inherit; font-weight: 600; color: var(--heading); cursor: pointer;
}

/* Hero */
.hero {
  position: relative; isolation: isolate; overflow: hidden;
  padding: clamp(4.5rem, 12vw, 9rem) 0 clamp(4rem, 10vw, 7.5rem);
  background: var(--bg);
}
.hero::before {
  content: ""; position: absolute; z-index: -1; inset: 0;
  background:
    radial-gradient(ellipse 60% 70% at 78% 8%, rgba(34, 211, 238, .24), transparent 65%),
    radial-gradient(ellipse 55% 60% at 8% 100%, rgba(59, 90, 220, .26), transparent 65%);
}
.hero::after {
  content: ""; position: absolute; z-index: -1; inset: 0; opacity: .5;
  background-image: linear-gradient(var(--border) 1px, transparent 1px), linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(ellipse 70% 70% at 50% 30%, #000, transparent 75%);
  mask-image: radial-gradient(ellipse 70% 70% at 50% 30%, #000, transparent 75%);
}
.hero-inner { max-width: 940px; }
.eyebrow {
  display: inline-block; text-transform: uppercase; letter-spacing: .12em; font-size: .8rem; font-weight: 700;
  color: var(--accent-strong); margin: 0 0 1.5rem; padding: .4rem .9rem;
  border: 1px solid rgba(34, 211, 238, .4); border-radius: 999px; background: rgba(34, 211, 238, .08);
}
.hero h1 {
  font-size: clamp(2.2rem, 5.6vw, 4rem); line-height: 1.08; letter-spacing: -.03em; font-weight: 800;
  color: var(--heading); margin: 0 0 2.5rem;
}
.button-row { display: flex; flex-wrap: wrap; gap: 1rem; }

/* Buttons */
.btn {
  display: inline-block; padding: .95rem 1.6rem; border-radius: 999px; font-weight: 700;
  text-decoration: none; border: 1px solid transparent; font: inherit; font-weight: 700; cursor: pointer;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease, color .2s ease, border-color .2s ease;
}
.btn-primary { background: var(--accent); color: var(--accent-ink); box-shadow: 0 8px 30px -8px rgba(34, 211, 238, .6); }
.btn-primary:hover { background: var(--accent-strong); color: var(--accent-ink); transform: translateY(-2px); box-shadow: 0 12px 36px -8px rgba(34, 211, 238, .75); }
.btn-secondary { border-color: var(--border-strong); color: var(--heading); background: var(--surface); }
.btn-secondary:hover { border-color: var(--accent-strong); color: var(--accent-strong); transform: translateY(-2px); }

/* Sections */
.section { padding: clamp(4rem, 9vw, 7rem) 0; position: relative; }
.section-alt { background: linear-gradient(180deg, var(--bg-2), #070d1a); border-block: 1px solid var(--border); }
h2 { font-size: clamp(1.9rem, 4vw, 2.9rem); color: var(--heading); margin: 0 0 1.25rem; line-height: 1.15; letter-spacing: -.025em; font-weight: 800; }
h3 { color: var(--heading); margin: 0 0 .6rem; font-size: 1.25rem; line-height: 1.3; letter-spacing: -.01em; }
.section-intro { color: var(--muted); font-size: 1.15rem; max-width: 720px; margin: 0 0 3rem; }
.narrow > p { color: var(--text); }
.byline { color: var(--accent-strong) !important; font-weight: 600; }

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

/* About Me */
.about-me { display: grid; grid-template-columns: 300px minmax(0, 1fr); gap: clamp(2rem, 5vw, 4.5rem); align-items: center; }
.about-me-photo { margin: 0; width: 100%; max-width: 300px; }
.about-me-photo img {
  display: block; width: 100%; height: auto; aspect-ratio: 4 / 5; object-fit: cover; border-radius: 24px;
  border: 1px solid rgba(34, 211, 238, .45);
  box-shadow: 0 0 0 6px rgba(34, 211, 238, .06), 0 24px 60px -20px rgba(34, 211, 238, .4);
  background: var(--surface);
}
.about-me-text p { font-size: 1.1rem; color: var(--text); margin: 0 0 1.1rem; max-width: 62ch; }
.about-me-text p:last-child { margin-bottom: 0; }
.about-me.no-photo { grid-template-columns: 1fr; }
.about-me.no-photo .about-me-photo { display: none; }
.about-me.no-photo .about-me-text { max-width: 780px; }

/* Cards */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); gap: 1.5rem; }
.card, .pilot, .contact-form {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
}
.card { padding: 2rem; transition: transform .25s ease, border-color .25s ease, background .25s ease, box-shadow .25s ease; }
.card:hover {
  transform: translateY(-6px); background: var(--surface-hover); border-color: rgba(34, 211, 238, .5);
  box-shadow: 0 20px 50px -20px rgba(34, 211, 238, .35);
}
.card p { margin: 0; color: var(--muted); }

.pilot { margin-top: 1.75rem; padding: 2rem; border: 1px dashed rgba(34, 211, 238, .55); background: linear-gradient(135deg, rgba(34, 211, 238, .08), var(--surface)); }
.pilot p { margin: 0; color: var(--muted); }
.badge { display: inline-block; background: rgba(34, 211, 238, .14); color: var(--accent-strong); border: 1px solid rgba(34, 211, 238, .5); font-size: .75rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; padding: .25rem .75rem; border-radius: 999px; margin-bottom: .9rem; }

/* Contact */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 5vw, 4.5rem); align-items: start; }
[hidden] { display: none !important; }
.contact-grid > div p { color: var(--muted); }
.contact-form { padding: 2rem; background: rgba(255, 255, 255, .05); }
.field { margin-bottom: 1.15rem; }
label { display: block; font-weight: 600; font-size: .95rem; margin-bottom: .4rem; color: var(--heading); }
input, select, textarea {
  width: 100%; padding: .8rem .95rem; font: inherit; color: var(--heading);
  border: 1px solid var(--border-strong); border-radius: 10px; background: rgba(3, 8, 18, .7);
  transition: border-color .2s ease, box-shadow .2s ease;
}
input:hover, select:hover, textarea:hover { border-color: rgba(34, 211, 238, .55); }
input:focus-visible, select:focus-visible, textarea:focus-visible { outline: 3px solid var(--accent-strong); outline-offset: 1px; border-color: var(--accent); }
select option { background: #0a1222; color: var(--heading); }
.contact-form .btn-primary { width: 100%; text-align: center; }
.hp { display: none !important; }
.form-status { margin: 1rem 0 0; padding: 0; font-size: .98rem; color: var(--muted); }
.form-status:empty { display: none; }
.form-status.is-success { padding: .8rem 1rem; border-radius: 12px; color: var(--heading); background: rgba(34, 211, 238, .1); border: 1px solid rgba(34, 211, 238, .5); }
.form-status.is-error { padding: .8rem 1rem; border-radius: 12px; color: #ffd9d9; background: rgba(255, 120, 120, .1); border: 1px solid rgba(255, 140, 140, .5); }
.btn:disabled { opacity: .7; cursor: progress; transform: none; box-shadow: none; }
textarea { resize: vertical; }
input:user-invalid, textarea:user-invalid { border-color: #ff9d9d; }

/* Footer */
.site-footer { background: #040810; border-top: 1px solid var(--border); color: var(--muted); padding: 2.5rem 0; font-size: .95rem; }
.site-footer a { color: var(--accent-strong); }
.site-footer a:hover { color: #fff; }
.footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: .6rem 2rem; }
.footer-inner p { margin: 0; }

/* Scroll reveal (only active when JS adds .reveal-ready) */
.reveal-ready .reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s cubic-bezier(.2, .7, .2, 1); }
.reveal-ready .reveal.is-visible { opacity: 1; transform: none; }
.reveal-ready .card.reveal.is-visible:hover { transform: translateY(-6px); transition-delay: 0ms !important; }

@media (max-width: 820px) {
  .nav-toggle { display: inline-block; }
  nav { position: static; }
  .nav-list {
    display: none; position: absolute; top: 100%; left: 0; right: 0;
    background: rgba(6, 11, 22, .96); -webkit-backdrop-filter: blur(16px); backdrop-filter: blur(16px);
    flex-direction: column; align-items: stretch; gap: 0; padding: .5rem 1.5rem 1.25rem;
    border-bottom: 1px solid var(--border);
  }
  .nav-list.open { display: flex; }
  .nav-list a { display: block; padding: .8rem 0; font-size: 1.05rem; }
  .nav-list .nav-cta { text-align: center; margin-top: .6rem; }
  .contact-grid { grid-template-columns: 1fr; }
  .about-me { grid-template-columns: 1fr; }
  .about-me-photo { width: min(60vw, 240px); max-width: 240px; justify-self: center; }
  .container { width: min(1120px, 100% - 2.5rem); }
  .card, .pilot, .contact-form { padding: 1.5rem; }
}
@media (max-width: 480px) {
  .button-row .btn { width: 100%; text-align: center; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
  .card:hover, .btn:hover, .logo:hover .logo-mark { transform: none; }
}