/* Base */
:root {
  --bg: #0b1220;
  --bg-alt: #0f172a;
  --card: #111827;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --primary: #22c55e;
  --primary-700: #16a34a;
  --ring: rgba(34, 197, 94, 0.35);
  --border: #1f2937;
  --container: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Inter, Helvetica, Arial, Apple Color Emoji, Segoe UI Emoji;
  color: var(--text);
  background: radial-gradient(1200px 800px at 10% -10%, #111827 10%, transparent 60%),
              radial-gradient(1000px 700px at 120% 0%, #0f172a 20%, transparent 60%),
              var(--bg);
  line-height: 1.65;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
}

.section { padding: 80px 0; }
.section-alt { background: rgba(255,255,255,0.02); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

.h1 { font-size: clamp(2rem, 4vw + 1rem, 3rem); line-height: 1.15; margin: 0 0 14px; }
.h2 { font-size: clamp(1.5rem, 2vw + 1rem, 2rem); margin: 0 0 20px; }
.h3 { font-size: 1.125rem; margin: 0 0 8px; }
.h4 { font-size: 1rem; margin: 0 0 6px; }
.lead { color: var(--muted); font-size: 1.1rem; }
.eyebrow { text-transform: uppercase; letter-spacing: .12em; font-size: .75rem; color: var(--muted); margin: 0 0 6px; }

.btn { display: inline-block; padding: 12px 18px; border-radius: 10px; border: 1px solid var(--border); background: #0b1324; color: var(--text); transition: transform .12s ease, background .12s ease, border-color .12s ease; }
.btn:hover { transform: translateY(-1px); border-color: var(--primary); }
.btn:focus { outline: 2px solid var(--ring); outline-offset: 2px; }
.btn-primary { background: linear-gradient(180deg, var(--primary), var(--primary-700)); border-color: transparent; color: #04110a; font-weight: 600; }
.btn-primary:hover { filter: brightness(1.05); }
.btn-sm { padding: 10px 14px; font-size: .95rem; }
.btn-ghost { background: transparent; }

.grid-2 { display: grid; grid-template-columns: 1.2fr .8fr; gap: 32px; }
@media (max-width: 900px) { .grid-2 { grid-template-columns: 1fr; } }

.inline-list { list-style: none; display: flex; gap: 12px; padding: 0; margin: 8px 0 0; color: var(--muted); font-size: .95rem; }

.cards-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 1000px) { .cards-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 700px) { .cards-grid { grid-template-columns: 1fr; } }

.projects-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
@media (max-width: 800px) { .projects-grid { grid-template-columns: 1fr; } }

.card { background: linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0.02)); border: 1px solid var(--border); border-radius: 14px; padding: 18px; }
.card-row { display: grid; grid-template-columns: 28px 1fr; gap: 12px; align-items: flex-start; }
.card .icon { width: 28px; height: 28px; background: rgba(34, 197, 94, 0.15); color: var(--primary); border-radius: 999px; display: inline-flex; align-items: center; justify-content: center; font-weight: 700; }
.tags { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; padding: 0; margin: 10px 0 0; }
.tags li { font-size: .85rem; color: var(--muted); background: #0c162a; border: 1px solid var(--border); padding: 6px 10px; border-radius: 999px; }

.prose p { margin: 0 0 14px; color: var(--text); }
.prose p + p { margin-top: 10px; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 50; backdrop-filter: saturate(180%) blur(10px); background: rgba(10, 16, 28, 0.6); border-bottom: 1px solid rgba(255,255,255,0.05); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { font-weight: 700; letter-spacing: .02em; }
.site-nav ul { list-style: none; display: flex; gap: 16px; padding: 0; margin: 0; align-items: center; }
.site-nav a { color: var(--muted); }
.site-nav a:hover { color: var(--text); }
.nav-toggle { display: none; background: transparent; border: 0; cursor: pointer; padding: 6px; }
.nav-toggle .bar { display: block; width: 22px; height: 2px; background: var(--text); margin: 5px 0; border-radius: 2px; }
@media (max-width: 800px) {
  .site-nav { position: fixed; inset: 64px 0 0 0; background: rgba(9,14,26,0.95); transform: translateY(-8px); opacity: 0; pointer-events: none; transition: opacity .15s ease; }
  .site-nav ul { flex-direction: column; padding: 20px; align-items: flex-start; }
  .site-nav.open { opacity: 1; pointer-events: auto; transform: none; }
  .nav-toggle { display: inline-block; }
}

/* Hero */
.hero { padding-top: 96px; }
.hero-card { background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.02)); border: 1px solid var(--border); border-radius: 14px; padding: 16px; }
.actions { display: flex; gap: 12px; margin-top: 18px; }

/* Contact */
.contact-form { background: linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0.02)); border: 1px solid var(--border); border-radius: 14px; padding: 18px; }
.field { display: grid; gap: 6px; margin-bottom: 12px; }
label { color: var(--muted); font-size: .95rem; }
input, textarea { background: #0c1527; color: var(--text); border: 1px solid var(--border); border-radius: 10px; padding: 12px 12px; font: inherit; }
input:focus, textarea:focus { outline: 2px solid var(--ring); outline-offset: 2px; border-color: var(--primary); }

/* Footer */
.site-footer { padding: 24px 0 60px; border-top: 1px solid var(--border); background: rgba(255,255,255,0.02); }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 14px; }
.to-top { color: var(--muted); }
.to-top:hover { color: var(--text); }

/* A11y */
.skip-link { position: absolute; left: -9999px; top: auto; width: 1px; height: 1px; overflow: hidden; }
.skip-link:focus { left: 12px; top: 12px; width: auto; height: auto; background: #111827; padding: 10px 14px; border-radius: 10px; outline: 2px solid var(--ring); }