:root {
  --bg: #0b0d12;
  --bg-soft: #11141c;
  --surface: rgba(255, 255, 255, 0.03);
  --surface-hover: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);
  --text: #e8ebf2;
  --text-muted: #9097a8;
  --text-dim: #6b7080;
  --accent: #7c9eff;
  --accent-soft: rgba(124, 158, 255, 0.15);
  --accent-glow: rgba(124, 158, 255, 0.35);
  --radius: 14px;
  --radius-sm: 8px;
  --max-width: 1080px;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }

/* Background layers */
.bg-gradient {
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(ellipse 80% 60% at 50% -10%, rgba(124, 158, 255, 0.22), transparent 60%),
    radial-gradient(ellipse 60% 50% at 90% 20%, rgba(189, 140, 255, 0.12), transparent 60%),
    radial-gradient(ellipse 60% 50% at 10% 80%, rgba(90, 200, 230, 0.08), transparent 60%),
    var(--bg);
}

.bg-grid {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, black 40%, transparent 90%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, black 40%, transparent 90%);
  pointer-events: none;
}

/* Layout */
.site-header,
main,
.site-footer {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 28px;
}

/* Header */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 28px;
  padding-bottom: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: -0.01em;
}

.brand-mark {
  color: var(--accent);
  font-size: 1.1rem;
  filter: drop-shadow(0 0 12px var(--accent-glow));
}

.nav {
  display: flex;
  gap: 28px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.nav a {
  transition: color 0.2s ease;
}

.nav a:hover { color: var(--text); }

/* Hero */
.hero {
  padding: 96px 0 120px;
  max-width: 760px;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin: 0 0 24px;
}

.hero h1 {
  font-size: clamp(2.4rem, 5.5vw, 4rem);
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.035em;
  margin: 0 0 24px;
}

.accent {
  background: linear-gradient(120deg, var(--accent), #bd8cff 80%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.lede {
  font-size: 1.125rem;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 0 36px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  transition: all 0.2s ease;
  cursor: pointer;
}

.btn-primary {
  background: var(--text);
  color: var(--bg);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(255, 255, 255, 0.12);
}

.btn-ghost {
  border-color: var(--border-strong);
  color: var(--text);
}

.btn-ghost:hover {
  background: var(--surface-hover);
  border-color: var(--text-muted);
}

/* Sections */
.section {
  padding: 64px 0;
  border-top: 1px solid var(--border);
}

.section-head {
  margin-bottom: 40px;
}

.section-head h2 {
  font-size: 1.75rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0 0 6px;
}

.section-head p {
  color: var(--text-muted);
  margin: 0;
  font-size: 0.98rem;
}

/* Projects */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.project-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all 0.25s ease;
  overflow: hidden;
}

.project-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 100% 80% at 50% 0%, var(--accent-soft), transparent 70%);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.project-card:not(.project-card-placeholder):hover {
  border-color: var(--border-strong);
  background: var(--surface-hover);
  transform: translateY(-2px);
}

.project-card:not(.project-card-placeholder):hover::before { opacity: 1; }

.project-card:not(.project-card-placeholder):hover .arrow {
  transform: translate(2px, -2px);
  color: var(--accent);
}

.project-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 4px;
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid var(--accent-soft);
}

.tag-muted {
  background: var(--surface);
  color: var(--text-dim);
  border-color: var(--border);
}

.arrow {
  color: var(--text-dim);
  font-size: 1.1rem;
  transition: all 0.2s ease;
}

.project-card h3 {
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  margin: 0;
}

.project-card p {
  color: var(--text-muted);
  margin: 0;
  font-size: 0.94rem;
}

.project-path {
  margin-top: 8px;
  font-size: 0.8rem;
  color: var(--text-dim);
}

.project-path code {
  font-family: var(--font-mono);
  background: var(--bg-soft);
  padding: 3px 8px;
  border-radius: 4px;
  border: 1px solid var(--border);
}

.project-card-placeholder {
  border-style: dashed;
  background: transparent;
}

.project-card-placeholder h3,
.project-card-placeholder p {
  color: var(--text-dim);
}

/* About */
.about {
  max-width: 640px;
}

.about p {
  color: var(--text-muted);
  margin: 0 0 16px;
}

.about p:last-child { margin-bottom: 0; }

/* Contact */
.contact-links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 12px;
}

.contact-link {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 20px 22px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  transition: all 0.2s ease;
}

.contact-link:hover {
  border-color: var(--border-strong);
  background: var(--surface-hover);
  transform: translateY(-1px);
}

.contact-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.contact-value {
  font-size: 1rem;
  color: var(--text);
}

/* Footer */
.site-footer {
  margin-top: 40px;
  padding-top: 32px;
  padding-bottom: 40px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-dim);
  font-size: 0.85rem;
  flex-wrap: wrap;
  gap: 8px;
}

.site-footer p { margin: 0; }

.footer-note { font-family: var(--font-mono); }

/* Responsive */
@media (max-width: 640px) {
  .site-header { padding-top: 20px; padding-bottom: 20px; }
  .nav { gap: 18px; }
  .hero { padding: 56px 0 72px; }
  .section { padding: 48px 0; }
}

@media (max-width: 480px) {
  .nav { display: none; }
  .site-header { justify-content: flex-start; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}