@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500&display=swap');

:root {
  --bg:        #080808;
  --bg2:       #101010;
  --bg3:       #161616;
  --border:    #222222;
  --border2:   #2e2e2e;
  --text:      #e8e8e4;
  --muted:     #666660;
  --subtle:    #333330;
  --accent:    #c8ff57;
  --accent-dim:#7a9c35;
  --danger:    #ff5f5f;
  --radius:    6px;
  --font-head: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Helvetica Neue', Arial, sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, 'SF Mono', monospace;
  --max:       780px;
  --nav-h:     64px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.7;
  font-weight: 400;
  letter-spacing: -0.022em;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

/* ── Noise overlay ── */
/* body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 999;
  opacity: .5;
} */

/* ── Typography ── */
h1, h2, h3, h4 { font-family: var(--font-head); line-height: 1.1; }
h1 { font-size: clamp(2.4rem, 6vw, 3.8rem); font-weight: 700; letter-spacing: -0.03em; }
h2 { font-size: clamp(1.5rem, 4vw, 2.2rem); font-weight: 600; letter-spacing: -0.025em; }
h3 { font-size: 1.1rem; font-weight: 600; letter-spacing: -0.018em; }
p  { color: var(--text); opacity: .85; }
a  { color: inherit; text-decoration: none; }
code, pre { font-family: var(--font-mono); font-size: .875em; }

/* ── Layout ── */
.container { max-width: var(--max); margin: 0 auto; padding: 0 1.5rem; }
.section    { padding: 5rem 0; }
.section + .section { border-top: 1px solid var(--border); }

/* ── Nav ── */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--nav-h);
  background: rgba(8,8,8,.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center;
}
nav .container { display: flex; align-items: center; justify-content: space-between; width: 100%; }
.nav-logo {
  font-family: var(--font-mono);
  font-size: .9rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: -.01em;
}
.nav-logo span { color: var(--muted); }
.nav-links { display: flex; gap: 2rem; align-items: center; }
.nav-links a {
  font-size: .875rem;
  color: var(--muted);
  font-family: var(--font-mono);
  transition: color .2s;
  position: relative;
}
.nav-links a:hover, .nav-links a.active { color: var(--text); }
.nav-links a.active::after {
  content: '';
  position: absolute; bottom: -4px; left: 0; right: 0; height: 1px;
  background: var(--accent);
}

/* ── Hero ── */
.hero {
  padding-top: calc(var(--nav-h) + 5rem);
  padding-bottom: 5rem;
  position: relative;
  overflow: hidden;
}
.hero-tag {
  font-family: var(--font-mono);
  font-size: .78rem;
  color: var(--accent);
  letter-spacing: .12em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
  display: flex; align-items: center; gap: .5rem;
}
.hero-tag::before {
  content: '';
  display: inline-block; width: 20px; height: 1px;
  background: var(--accent);
}
.hero h1 { margin-bottom: 1.25rem; }
.hero h1 em { font-style: normal; color: var(--accent); }
.hero-sub {
  font-size: 1.1rem;
  color: var(--muted);
  max-width: 520px;
  line-height: 1.65;
  margin-bottom: 2.5rem;
}
.hero-cta { display: flex; gap: 1rem; flex-wrap: wrap; align-items: center; }
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .7rem 1.4rem;
  font-family: var(--font-mono); font-size: .82rem; font-weight: 500;
  border-radius: var(--radius);
  transition: all .2s;
  cursor: pointer;
  border: none;
}
.btn-accent {
  background: var(--accent); color: #080808;
}
.btn-accent:hover { background: #d8ff77; transform: translateY(-1px); }
.btn-ghost {
  background: transparent; color: var(--muted);
  border: 1px solid var(--border2);
}
.btn-ghost:hover { color: var(--text); border-color: var(--muted); }

/* Decorative grid lines */
.hero::after {
  content: '';
  position: absolute; top: 0; right: -100px; bottom: 0; width: 500px;
  background: repeating-linear-gradient(
    90deg,
    transparent, transparent 59px,
    var(--border) 59px, var(--border) 60px
  ),
  repeating-linear-gradient(
    180deg,
    transparent, transparent 59px,
    var(--border) 59px, var(--border) 60px
  );
  opacity: .35;
  mask-image: linear-gradient(to left, rgba(0,0,0,.6), transparent 80%);
  pointer-events: none;
}

/* ── Label/tag ── */
.label {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted);
}
.section-header { margin-bottom: 3rem; }
.section-header .label { margin-bottom: .75rem; }
.section-header h2 { letter-spacing: -.025em; }

/* ── Post cards ── */
.posts-grid { display: grid; gap: 1px; background: var(--border); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.post-card {
  background: var(--bg);
  padding: 1.75rem 2rem;
  transition: background .2s;
  display: block;
}
.post-card:hover { background: var(--bg2); }
.post-card-meta {
  display: flex; align-items: center; gap: 1rem;
  margin-bottom: .75rem;
}
.post-date { font-family: var(--font-mono); font-size: .75rem; color: var(--muted); }
.post-tag {
  font-family: var(--font-mono); font-size: .7rem;
  padding: 2px 8px; border-radius: 3px;
  background: var(--bg3); border: 1px solid var(--border2);
  color: var(--muted);
}
.post-card h3 { font-size: 1.1rem; margin-bottom: .4rem; transition: color .2s; }
.post-card:hover h3 { color: var(--accent); }
.post-card p { font-size: .9rem; color: var(--muted); line-height: 1.6; }
.post-card-arrow {
  margin-top: 1rem;
  font-family: var(--font-mono); font-size: .78rem; color: var(--accent-dim);
  transition: color .2s, gap .2s;
  display: flex; align-items: center; gap: .3rem;
}
.post-card:hover .post-card-arrow { color: var(--accent); gap: .5rem; }

/* ── Project cards ── */
.projects-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 1px; background: var(--border); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.project-card {
  background: var(--bg);
  padding: 1.75rem;
  transition: background .2s;
  display: flex; flex-direction: column;
  position: relative;
}
.project-card:hover { background: var(--bg2); }
.project-number {
  font-family: var(--font-mono); font-size: .7rem;
  color: var(--subtle);
  margin-bottom: .75rem;
}
.project-card h3 { font-size: 1rem; margin-bottom: .5rem; transition: color .2s; }
.project-card:hover h3 { color: var(--accent); }
.project-card p { font-size: .875rem; color: var(--muted); line-height: 1.6; flex: 1; margin-bottom: 1.25rem; }
.tech-stack { display: flex; flex-wrap: wrap; gap: .4rem; margin-bottom: 1.25rem; }
.tech-tag {
  font-family: var(--font-mono); font-size: .68rem;
  padding: 2px 7px; border-radius: 3px;
  border: 1px solid var(--border2);
  color: var(--accent-dim);
}
.project-links { display: flex; gap: 1rem; }
.project-links a {
  font-family: var(--font-mono); font-size: .75rem; color: var(--muted);
  display: flex; align-items: center; gap: .3rem;
  transition: color .2s;
}
.project-links a:hover { color: var(--accent); }

/* ── About ── */
.about-grid { display: grid; grid-template-columns: 1fr 2fr; gap: 4rem; align-items: start; }
.avatar-wrap {
  aspect-ratio: 1;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  font-size: 4rem;
  position: relative; overflow: hidden;
}
.avatar-wrap::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(135deg, transparent 60%, rgba(200,255,87,.05));
}
.about-bio { display: flex; flex-direction: column; gap: 1rem; }
.about-bio p { font-size: 1rem; }
.skills-list {
  display: flex; flex-wrap: wrap; gap: .5rem;
  margin-top: .5rem;
}
.skill-pill {
  font-family: var(--font-mono); font-size: .75rem;
  padding: .3rem .75rem; border-radius: 3px;
  background: var(--bg3); border: 1px solid var(--border2);
  color: var(--text);
}

/* ── Blog post page ── */
.post-hero { padding-top: calc(var(--nav-h) + 4rem); padding-bottom: 2rem; }
.post-hero .post-date { margin-bottom: 1rem; }
.post-content { max-width: 660px; }
.post-content h1 { margin-bottom: 1.5rem; }
.post-body { padding: 3rem 0; border-top: 1px solid var(--border); }
.post-body p { margin-bottom: 1.25rem; opacity: .88; }
.post-body h2 { margin: 2.5rem 0 1rem; }
.post-body h3 { margin: 2rem 0 .75rem; color: var(--accent); }
.post-body pre {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.25rem 1.5rem;
  overflow-x: auto; margin: 1.5rem 0;
  font-size: .85rem; line-height: 1.65;
}
.post-body code:not(pre code) {
  background: var(--bg2); border: 1px solid var(--border);
  padding: 1px 6px; border-radius: 3px; color: var(--accent);
}
.post-body blockquote {
  border-left: 3px solid var(--accent);
  padding: .75rem 1.25rem; margin: 1.5rem 0;
  background: var(--bg2); border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--muted);
}
.post-nav {
  border-top: 1px solid var(--border); padding-top: 2rem; margin-top: 2rem;
  display: flex; justify-content: space-between; gap: 1rem;
}
.post-nav a {
  font-family: var(--font-mono); font-size: .8rem; color: var(--muted);
  transition: color .2s;
}
.post-nav a:hover { color: var(--accent); }

/* ── Footer ── */
footer {
  border-top: 1px solid var(--border);
  padding: 2.5rem 0;
  margin-top: 4rem;
}
.footer-inner {
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 1rem;
}
.footer-copy { font-family: var(--font-mono); font-size: .75rem; color: var(--muted); }
.footer-links { display: flex; gap: 1.5rem; }
.footer-links a {
  font-family: var(--font-mono); font-size: .75rem; color: var(--muted);
  transition: color .2s;
}
.footer-links a:hover { color: var(--accent); }

/* ── Page header (non-hero pages) ── */
.page-header {
  padding-top: calc(var(--nav-h) + 4rem);
  padding-bottom: 3.5rem;
  border-bottom: 1px solid var(--border);
}

/* ── Fade-in animation ── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}
.fade-in { animation: fadeUp .55s ease both; }
.fade-in:nth-child(2) { animation-delay: .1s; }
.fade-in:nth-child(3) { animation-delay: .2s; }
.fade-in:nth-child(4) { animation-delay: .3s; }

/* ── Responsive ── */
@media (max-width: 640px) {
  .about-grid { grid-template-columns: 1fr; gap: 2rem; }
  .avatar-wrap { max-width: 140px; }
  .projects-grid { grid-template-columns: 1fr; }
  .nav-links a:not(.active) { display: none; }
}