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

/* ── Tokens ── */
:root {
  --bg: #0c0c0c;
  --surface: #161616;
  --border: #242424;
  --text: #efefef;
  --muted: #777;
  --accent: #7B8CDE;
  --accent-dim: rgba(123,140,222,0.12);
  --accent-glow: rgba(123,140,222,0.22);
  --font-sans: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --max-w: 1200px;
  --pad: 3rem;
}

/* ── Base ── */
html { font-size: 16px; scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.65;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── Nav ── */
header {
  border-bottom: 1px solid var(--border);
  padding: 1.25rem var(--pad);
}
nav {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.nav-logo { color: var(--text); font-weight: 700; letter-spacing: -0.02em; font-size: 1rem; }
.nav-logo:hover { text-decoration: none; color: var(--text); }
nav ul { list-style: none; display: flex; gap: 2.5rem; }
nav ul a { color: var(--muted); font-size: 0.875rem; transition: color 0.2s; }
nav ul a:hover { color: var(--text); text-decoration: none; }

/* ── Main ── */
main {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 4rem var(--pad);
  flex: 1;
  width: 100%;
}

/* ── Footer ── */
footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem var(--pad);
}
.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--muted);
  font-size: 0.8rem;
}
.footer-links { display: flex; gap: 1.5rem; }
.footer-links a { color: var(--muted); transition: color 0.2s; }
.footer-links a:hover { color: var(--accent); text-decoration: none; }

/* ── Typography ── */
h1 { font-size: 3.25rem; font-weight: 800; letter-spacing: -0.04em; line-height: 1.05; margin-bottom: 1rem; }
h2 { font-size: 1.4rem; font-weight: 600; letter-spacing: -0.02em; margin-bottom: 0.75rem; }
h3 { font-size: 1.1rem; font-weight: 600; margin-bottom: 0.5rem; }
p { margin-bottom: 1rem; }

/* ── Animations ── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}
.fade-up { animation: fadeUp 0.55s ease both; }
.fade-up-1 { animation: fadeUp 0.55s 0.1s ease both; }
.fade-up-2 { animation: fadeUp 0.55s 0.2s ease both; }
.fade-up-3 { animation: fadeUp 0.55s 0.3s ease both; }

/* ── Utilities ── */
.muted { color: var(--muted); }
.eyebrow {
  font-size: 0.75rem;
  color: var(--accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 500;
  margin-bottom: 0.75rem;
}
.tag {
  display: inline-block;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.7rem;
  padding: 0.2rem 0.55rem;
  border-radius: 4px;
  font-family: var(--font-mono);
}
.tag.accent { border-color: var(--accent); color: var(--accent); }
.tag-row { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 0.75rem; }

/* ── Buttons ── */
.btn-primary {
  display: inline-block;
  background: var(--accent);
  color: #0c0c0c;
  padding: 0.65rem 1.4rem;
  border-radius: 8px;
  font-weight: 700;
  font-size: 0.875rem;
  transition: opacity 0.2s;
}
.btn-primary:hover { opacity: 0.85; text-decoration: none; }
.btn-secondary {
  display: inline-block;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.65rem 1.4rem;
  border-radius: 8px;
  font-size: 0.875rem;
  transition: border-color 0.2s;
}
.btn-secondary:hover { border-color: var(--accent); text-decoration: none; }

/* ── Project card grid ── */
.project-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}
.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  transition: border-color 0.2s, transform 0.2s;
}
.project-card:hover { border-color: var(--accent); transform: translateY(-3px); }
.project-card-img {
  width: 100%;
  aspect-ratio: 16/9;
  background: #111;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: 0.75rem;
  position: relative;
  overflow: hidden;
}
.project-card-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--accent-dim), transparent);
  pointer-events: none;
}
.project-card-img img { width: 100%; height: 100%; object-fit: cover; }
.project-card-body { padding: 1.25rem; }
.project-card-body h3 { font-size: 1rem; font-weight: 600; margin-bottom: 0.4rem; }
.project-card-body h3 a { color: var(--text); }
.project-card-body h3 a:hover { color: var(--accent); text-decoration: none; }
.project-card-body p { font-size: 0.825rem; color: var(--muted); line-height: 1.55; margin-bottom: 0; }

/* ── Project page prose ── */
.prose h2 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-top: 2rem;
  margin-bottom: 0.5rem;
  color: var(--text);
}
.prose h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-top: 1.5rem;
  margin-bottom: 0.4rem;
  color: var(--muted);
}
.prose p { color: var(--muted); line-height: 1.75; margin-bottom: 1rem; }
.prose ul, .prose ol { color: var(--muted); padding-left: 1.5rem; margin-bottom: 1rem; line-height: 1.75; }
.prose a { color: var(--accent); }
.prose code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: var(--surface);
  padding: 0.15em 0.4em;
  border-radius: 3px;
}
.prose pre {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1rem;
  overflow-x: auto;
  margin-bottom: 1.5rem;
}
.prose blockquote {
  border-left: 3px solid var(--accent);
  padding-left: 1rem;
  color: var(--muted);
  font-style: italic;
}

/* ── Responsive ── */
@media (max-width: 900px) {
  :root { --pad: 1.5rem; }
  .project-grid { grid-template-columns: repeat(2, 1fr); }
  h1 { font-size: 2.5rem; }
}
@media (max-width: 600px) {
  :root { --pad: 1.25rem; }
  .project-grid { grid-template-columns: 1fr; }
  h1 { font-size: 2rem; }
  nav ul { gap: 1.25rem; }
}