:root {
  --bg: #05060f;
  --bg-elev: #0e1018;
  --border: #1d2130;
  --text: #eceef4;
  --muted: #9aa0ad;
  --accent: #7c5cff;
  --accent-2: #4dd0e1;
  --max: 920px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.glow {
  position: fixed;
  top: -25%;
  left: 50%;
  transform: translateX(-50%);
  width: 1100px;
  height: 1100px;
  background: radial-gradient(circle, rgba(124, 92, 255, 0.16), transparent 62%);
  pointer-events: none;
  z-index: 0;
}

main, .masthead, .footer { position: relative; z-index: 1; }

/* Masthead */
.masthead {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 3rem 1.5rem 1.5rem;
  gap: 1.5rem;
}
.brand { display: flex; flex-direction: column; align-items: center; gap: 0.75rem; text-decoration: none; color: var(--text); }
.logo { filter: drop-shadow(0 0 24px rgba(124, 92, 255, 0.35)); }
.tagline { font-style: italic; font-size: 1.15rem; color: #cdd2de; letter-spacing: 0.02em; }

.menu {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.6rem 1.8rem;
  max-width: 760px;
}
.menu a {
  color: #d7dae3;
  text-decoration: none;
  font-size: 1rem;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}
.menu a:hover { color: #fff; border-color: var(--accent); }

/* Layout */
main { max-width: var(--max); margin: 0 auto; padding: 0 1.5rem; }

/* Hero */
.hero {
  text-align: center;
  padding: 4.5rem 0 5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.eyebrow {
  font-family: "Inter", system-ui, sans-serif;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin-bottom: 1.25rem;
}
.hero h1 {
  font-family: "Playfair Display", Georgia, serif;
  font-weight: 600;
  font-size: clamp(2.4rem, 7vw, 5rem);
  line-height: 1.08;
  letter-spacing: -0.01em;
}
.lede { font-size: 1.15rem; color: var(--muted); max-width: 620px; margin-top: 1.5rem; }

/* Buttons */
.cta-row { display: flex; gap: 0.8rem; flex-wrap: wrap; justify-content: center; margin-top: 2rem; }
.btn {
  display: inline-block;
  padding: 0.75rem 1.4rem;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform 0.15s, border-color 0.2s;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #05060f; }
.btn-ghost { border: 1px solid var(--border); color: var(--text); }
.btn-ghost:hover { border-color: var(--accent); }

/* Content blocks */
.block { padding: 3.25rem 0; border-top: 1px solid var(--border); scroll-margin-top: 1.5rem; }
.block h2 {
  font-family: "Playfair Display", Georgia, serif;
  font-weight: 600;
  font-size: 1.9rem;
  margin-bottom: 0.4rem;
}
.block-intro { color: var(--muted); margin-bottom: 1.4rem; }

/* Post lists */
.posts { list-style: none; display: grid; gap: 0.8rem; }
.posts a {
  display: block;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.1rem 1.3rem;
  text-decoration: none;
  color: var(--text);
  transition: border-color 0.2s, transform 0.15s;
}
.posts a:hover { border-color: var(--accent); transform: translateY(-3px); }
.post-title { display: block; font-weight: 600; }
.post-desc { display: block; color: var(--muted); font-size: 0.95rem; margin-top: 0.2rem; }

/* Profile / About */
.profile {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 2.75rem;
  align-items: center;
}
.profile-photo img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 18px;
  /* fade the photo's edges into the black background */
  -webkit-mask-image: radial-gradient(118% 118% at 50% 42%, #000 58%, transparent 100%);
  mask-image: radial-gradient(118% 118% at 50% 42%, #000 58%, transparent 100%);
}
.profile-body .roles {
  font-family: "Inter", system-ui, sans-serif;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin: 0.25rem 0 1rem;
}
.profile-body p { color: #c6cbd6; margin-bottom: 1rem; }
.highlights { list-style: none; display: grid; gap: 0.9rem; margin-top: 1.5rem; }
.highlights li { display: flex; gap: 1rem; align-items: baseline; }
.highlights .h-label {
  flex: 0 0 110px;
  font-weight: 600;
  color: var(--text);
  font-size: 0.9rem;
}
.highlights .h-text { color: var(--muted); font-size: 0.95rem; }

/* Open source projects */
.projects {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}
.project {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.5rem;
  transition: border-color 0.2s, transform 0.15s;
}
.project:hover { border-color: var(--accent); transform: translateY(-3px); }
.project-kicker {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin-bottom: 0.55rem;
}
.project h3 {
  font-family: "Playfair Display", Georgia, serif;
  font-weight: 600;
  font-size: 1.35rem;
  margin-bottom: 0.5rem;
}
.project p { color: var(--muted); font-size: 0.95rem; margin-bottom: 1.1rem; }
.project-links { display: flex; gap: 1.2rem; flex-wrap: wrap; }
.project-links a {
  color: #d7dae3;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  border-bottom: 1px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}
.project-links a:hover { color: #fff; border-color: var(--accent); }

.cta-row.cta-left { justify-content: flex-start; margin-top: 1.5rem; }

@media (max-width: 680px) {
  .projects { grid-template-columns: 1fr; }
  .book { grid-template-columns: 1fr; justify-items: center; text-align: center; }
  .book-cover { max-width: 240px; }
  .book .cta-row.cta-left { justify-content: center; }
}

/* Book feature */
.book {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 2rem;
  align-items: center;
  background: linear-gradient(135deg, rgba(124, 92, 255, 0.12), rgba(77, 208, 225, 0.08));
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 2rem;
}
.book-cover { display: block; }
.book-cover img {
  width: 100%;
  height: auto;
  border-radius: 10px;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.55);
  transition: transform 0.2s;
}
.book-cover:hover img { transform: translateY(-4px) scale(1.01); }
.book-sub {
  font-family: "Playfair Display", Georgia, serif;
  font-style: italic;
  color: #c6cbd6;
  margin-bottom: 1rem !important;
}
.book-kicker {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin-bottom: 0.5rem;
}
.book-body h3 {
  font-family: "Playfair Display", Georgia, serif;
  font-weight: 600;
  font-size: 1.5rem;
  margin-bottom: 0.6rem;
}
.book-body p { color: #c6cbd6; margin-bottom: 1.4rem; max-width: 560px; }

/* Footer */
.footer {
  max-width: var(--max);
  margin: 0 auto;
  padding: 2.5rem 1.5rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
  text-align: center;
}

@media (max-width: 760px) {
  .profile { grid-template-columns: 1fr; gap: 1.75rem; }
  .profile-photo { max-width: 340px; margin: 0 auto; }
  .highlights li { flex-direction: column; gap: 0.1rem; }
  .highlights .h-label { flex: none; }
}

@media (max-width: 600px) {
  .menu { gap: 0.5rem 1.1rem; }
  .menu a { font-size: 0.92rem; }
}