:root {
  --bg: #0b1120;
  --bg-alt: #020617;
  --surface: #0f172a;
  --surface-strong: #111827;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --muted-2: #64748b;
  --line: #1f2937;
  --line-strong: #334155;
  --accent: #38bdf8;
  --accent-strong: #0ea5e9;
  --warning: #fbbf24;
  --shadow-soft: 0 18px 48px rgba(2, 6, 23, 0.45);
  --radius-xl: 1rem;
  --radius-lg: 0.75rem;
  --radius-md: 0.55rem;
  --max: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}
body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(circle at 15% 0%, rgba(56, 189, 248, 0.12), transparent 28rem),
    radial-gradient(circle at 90% 8%, rgba(14, 165, 233, 0.08), transparent 26rem),
    var(--bg);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.7;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(rgba(148, 163, 184, 0.035) 1px, transparent 1px), linear-gradient(90deg, rgba(148, 163, 184, 0.035) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, #000, transparent 70%);
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: #7dd3fc; text-decoration: underline; text-underline-offset: 0.2em; }
img { display: block; max-width: 100%; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--line);
  background: rgba(2, 6, 23, 0.88);
  backdrop-filter: blur(16px);
}
.nav-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0.85rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.brand { display: inline-flex; align-items: center; gap: 0.75rem; color: var(--text); text-decoration: none; }
.brand:hover { color: var(--text); text-decoration: none; }
.brand-mark {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 0.8rem;
  color: var(--bg-alt);
  background: radial-gradient(circle at 0 0, var(--accent), var(--accent-strong));
  box-shadow: 0 14px 32px rgba(56, 189, 248, 0.26);
  font-weight: 800;
}
.brand-name { display: block; font-size: 1rem; font-weight: 700; letter-spacing: -0.02em; }
.brand-tagline { display: block; margin-top: -0.1rem; color: var(--muted); font-size: 0.8rem; }
nav ul { display: flex; flex-wrap: wrap; gap: 0.35rem; list-style: none; margin: 0; padding: 0; }
nav a {
  display: inline-flex;
  padding: 0.45rem 0.7rem;
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.88rem;
  text-decoration: none;
}
nav a:hover { background: rgba(15, 23, 42, 0.95); color: var(--text); text-decoration: none; }

main { position: relative; max-width: var(--max); margin: 0 auto; padding: 1.75rem 1.25rem 4rem; }
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
  gap: 2rem;
  align-items: center;
  padding: 3rem 0 1.75rem;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 0.8rem;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.eyebrow::before { content: ""; width: 30px; height: 1px; background: currentColor; }
h1, h2, h3 { margin: 0; color: var(--text); line-height: 1.12; letter-spacing: -0.035em; }
h1 { max-width: 820px; font-size: clamp(2.35rem, 6vw, 5rem); font-weight: 800; }
.hero-subtitle { max-width: 700px; margin: 1.1rem 0 0; color: var(--muted); font-size: clamp(1rem, 1.6vw, 1.15rem); }
.hero-subtitle strong { color: var(--text); }
.hero-actions, .button-row { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1.5rem; }
.btn-primary, .btn-ghost, .btn-text {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 0.62rem 1.05rem;
  font-size: 0.9rem;
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.16s ease, box-shadow 0.16s ease, background 0.16s ease, border-color 0.16s ease;
}
.btn-primary { border: 1px solid var(--accent); background: var(--accent); color: var(--bg-alt); box-shadow: 0 18px 40px rgba(56, 189, 248, 0.28); }
.btn-primary:hover { color: var(--bg-alt); transform: translateY(-1px); text-decoration: none; filter: brightness(1.05); }
.btn-ghost { border: 1px solid #4b5563; background: transparent; color: var(--text); }
.btn-ghost:hover { background: var(--surface-strong); color: var(--text); text-decoration: none; transform: translateY(-1px); }
.btn-text { padding-inline: 0; color: var(--accent); }

.portrait-card, .section, .project-card, .case-card, .metric-card, .highlight-box, .content-section {
  border: 1px solid var(--line);
  background: rgba(2, 6, 23, 0.78);
  box-shadow: var(--shadow-soft);
}
.portrait-card { border-radius: var(--radius-xl); padding: 0.8rem; }
.portrait-card img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; object-position: center 18%; border-radius: var(--radius-lg); }
.portrait-caption { display: flex; justify-content: space-between; gap: 1rem; padding: 0.8rem 0.25rem 0.1rem; color: var(--muted); font-size: 0.86rem; }
.portrait-caption strong { color: var(--text); }
.stat-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; margin: 1rem 0 2rem; }
.metric-card { border-radius: var(--radius-lg); padding: 1rem; background: rgba(15, 23, 42, 0.92); }
.metric-value { display: block; color: var(--accent); font-size: 1.55rem; font-weight: 800; letter-spacing: -0.04em; }
.metric-label { color: var(--muted); font-size: 0.84rem; line-height: 1.5; }

.section {
  position: relative;
  margin-top: 1rem;
  padding: clamp(1.2rem, 2.5vw, 1.65rem);
  border-radius: var(--radius-xl);
  background: rgba(15, 23, 42, 0.9);
  overflow: hidden;
}
.section::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: linear-gradient(180deg, var(--accent), rgba(56, 189, 248, 0.05));
}
.section > * { position: relative; }
.section + .section { margin-top: 1.25rem; }
.section-header { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; margin-bottom: 1rem; }
.section-kicker { margin: 0 0 0.2rem; color: var(--muted); font-size: 0.78rem; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase; }
.section-title { font-size: clamp(1.35rem, 3vw, 2.2rem); font-weight: 750; }
p, li, .lead, .section-body { color: var(--muted); }
.lead { max-width: 820px; font-size: 0.98rem; }
.two-column { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr); gap: 1rem; align-items: start; }
.clean-list { padding-left: 1.1rem; margin: 0.65rem 0 0; }
.clean-list li { margin: 0.35rem 0; }
.card-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.project-card, .case-card {
  border-radius: var(--radius-lg);
  padding: 1rem;
  background: var(--bg-alt);
  box-shadow: none;
}
.project-card h3, .case-card h3 { font-size: 1.08rem; }
.project-card p, .case-card p { margin: 0.6rem 0 0.8rem; }
.card-meta, .tech-stack { display: flex; flex-wrap: wrap; gap: 0.45rem; margin-top: 0.8rem; }
.tag, .tech-badge { border: 1px solid rgba(148, 163, 184, 0.45); border-radius: 999px; padding: 0.22rem 0.58rem; color: var(--muted); background: rgba(15, 23, 42, 0.92); font-size: 0.76rem; font-weight: 650; }
.featured { border-color: rgba(56, 189, 248, 0.32); background: radial-gradient(circle at top left, rgba(56, 189, 248, 0.13), rgba(2, 6, 23, 0.95) 42%, rgba(2, 6, 23, 0.98)); }
.featured::after { content: ""; position: absolute; width: 260px; height: 260px; right: -90px; top: -110px; border-radius: 50%; background: rgba(56, 189, 248, 0.1); }
.featured-grid { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(260px, 0.85fr); gap: 1.2rem; align-items: center; }
.terminal-card { border: 1px solid rgba(148, 163, 184, 0.35); border-radius: var(--radius-lg); background: rgba(15, 23, 42, 0.96); padding: 1rem; color: var(--text); font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace; font-size: 0.82rem; }
.terminal-card div { margin: 0.35rem 0; }
.prompt { color: #22c55e; }
.gallery { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; margin-top: 1rem; }
.gallery img { border-radius: var(--radius-lg); aspect-ratio: 4 / 3; object-fit: cover; border: 1px solid var(--line); box-shadow: var(--shadow-soft); }
.gallery.small img { aspect-ratio: 1 / 1; }

.page-hero { padding: 2.5rem 0 1.2rem; }
.page-hero h1 { font-size: clamp(2rem, 4.5vw, 3.2rem); }
.subtitle, .meta { max-width: 850px; margin: 0.85rem 0 0; color: var(--muted); font-size: 1rem; }
.back-link { display: inline-flex; margin-bottom: 1.25rem; color: var(--accent); font-weight: 700; text-decoration: none; }
.content-section, .highlight-box { border-radius: var(--radius-lg); padding: 1.15rem; margin-top: 1rem; background: rgba(15, 23, 42, 0.9); }
.content-section h2, .highlight-box h3 { margin-bottom: 0.55rem; font-size: 1.15rem; font-weight: 750; }
pre { padding: 1rem; overflow-x: auto; border-radius: var(--radius-md); background: var(--bg-alt); color: var(--text); border: 1px solid var(--line); }
code { font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace; }
.contact-list { list-style: none; padding: 0; margin: 1rem 0 0; display: flex; flex-wrap: wrap; gap: 0.75rem; }
.contact-list a {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  min-width: 220px;
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-md);
  background: var(--bg-alt);
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
}
.contact-list a::after { content: "↗"; color: var(--accent); }
.contact-list a:hover { background: var(--surface-strong); color: var(--text); text-decoration: none; }
footer { position: relative; max-width: var(--max); margin: 0 auto; padding: 0 1.25rem 2.4rem; color: var(--muted); font-size: 0.82rem; display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }

@media (max-width: 860px) {
  .hero, .two-column, .featured-grid { grid-template-columns: 1fr; }
  .stat-strip { grid-template-columns: repeat(2, 1fr); }
  .card-grid { grid-template-columns: 1fr; }
  .nav-inner { align-items: flex-start; flex-direction: column; }
  .portrait-card { max-width: 420px; }
}
@media (max-width: 560px) {
  main { padding-top: 1rem; }
  .hero { padding-top: 2rem; }
  .stat-strip, .gallery { grid-template-columns: 1fr; }
  .brand-tagline { display: none; }
}