:root {
  --bg: #0b0b10;
  --bg-alt: #111118;
  --bg-card: #16161f;
  --border: rgba(255, 255, 255, 0.07);
  --text: #dde1eb;
  --text-muted: #7a7f94;
  --accent: #6b8ff5;
  --accent-hover: #8aa4f8;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --radius: 10px;
  --max-w: 900px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Hero ── */

.hero {
  padding: 80px 0 72px;
  border-bottom: 1px solid var(--border);
}

.hero .container {
  display: flex;
  align-items: center;
  gap: 40px;
}

.hero-photo {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  border: 2px solid var(--border);
}

.hero-text {
  flex: 1;
}

.hero-text h1 {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: #fff;
  margin-bottom: 4px;
}

.hero-title {
  font-size: 1rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.hero-bio {
  font-size: 0.975rem;
  color: var(--text);
  max-width: 560px;
  margin-bottom: 24px;
  line-height: 1.75;
}

.hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  background: var(--bg-card);
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}

.pill:hover {
  color: var(--accent-hover);
  border-color: rgba(107, 143, 245, 0.35);
  background: rgba(107, 143, 245, 0.06);
}

.accent {
  color: var(--accent);
  transition: color 0.15s;
}

.accent:hover { color: var(--accent-hover); }

/* ── Sections ── */

section {
  padding: 72px 0;
}

.section-alt {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
}

section h2 {
  font-size: 1.6rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.3px;
  margin-bottom: 8px;
}

.section-sub {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 36px;
}

/* ── Talks ── */

.talk-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-top: 36px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.talk {
  padding: 22px 24px;
  border-bottom: 1px solid var(--border);
  transition: background 0.15s;
}

.talk:last-child { border-bottom: none; }

.talk:hover { background: var(--bg-card); }

.talk-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
}

.talk-event {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent);
}

.talk-event-link {
  color: inherit;
  text-decoration: underline;
  text-decoration-color: rgba(107, 143, 245, 0.35);
  text-underline-offset: 2px;
  transition: text-decoration-color 0.15s;
}

.talk-event-link:hover { text-decoration-color: var(--accent); }

.talk-year {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.talk-title {
  font-size: 0.975rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.tag {
  font-size: 0.68rem;
  font-weight: 500;
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(107, 143, 245, 0.12);
  color: var(--accent);
  border: 1px solid rgba(107, 143, 245, 0.2);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.talk-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ── Projects ── */

.project-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 36px;
}

.project-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 22px 22px 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card);
  transition: border-color 0.15s, background 0.15s, transform 0.15s;
}

.project-card:hover {
  border-color: rgba(107, 143, 245, 0.3);
  background: rgba(107, 143, 245, 0.04);
  transform: translateY(-2px);
}

.project-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.project-card h3 {
  font-size: 0.95rem;
  font-weight: 600;
  color: #fff;
  font-family: 'SF Mono', 'Fira Code', Consolas, monospace;
}

.project-card p {
  font-size: 0.855rem;
  color: var(--text-muted);
  line-height: 1.6;
  flex: 1;
}

.project-org {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.lang {
  font-size: 0.72rem;
  font-weight: 500;
  padding: 2px 8px;
  border-radius: 999px;
  flex-shrink: 0;
}

.lang-csharp { background: rgba(178, 98, 219, 0.15); color: #c279e6; border: 1px solid rgba(178, 98, 219, 0.2); }
.lang-dotnet  { background: rgba(178, 98, 219, 0.15); color: #c279e6; border: 1px solid rgba(178, 98, 219, 0.2); }
.lang-js      { background: rgba(240, 196, 64, 0.12); color: #d4ac30; border: 1px solid rgba(240, 196, 64, 0.2); }
.lang-ts      { background: rgba(49, 120, 198, 0.15); color: #5b9bd5; border: 1px solid rgba(49, 120, 198, 0.2); }

/* ── Writing ── */

.post-list {
  display: flex;
  flex-direction: column;
  margin-top: 36px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.post {
  display: grid;
  grid-template-columns: 72px 1fr 24px;
  align-items: center;
  gap: 16px;
  padding: 18px 22px;
  border-bottom: 1px solid var(--border);
  transition: background 0.15s;
}

.post:last-child { border-bottom: none; }
.post:hover { background: var(--bg-card); }

.post-date {
  font-size: 0.78rem;
  color: var(--text-muted);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

.post-title {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text);
  transition: color 0.15s;
}

.post:hover .post-title { color: #fff; }

.post-arrow {
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: color 0.15s, transform 0.15s;
}

.post:hover .post-arrow {
  color: var(--accent);
  transform: translateX(2px);
}

/* ── Contact ── */

.contact-container {
  text-align: center;
}

.contact-text {
  font-size: 0.975rem;
  color: var(--text-muted);
  max-width: 480px;
  margin: 16px auto 32px;
}

.cta-button {
  display: inline-block;
  padding: 12px 28px;
  border: 1px solid rgba(107, 143, 245, 0.4);
  border-radius: 8px;
  background: rgba(107, 143, 245, 0.08);
  color: var(--accent-hover);
  font-size: 0.9rem;
  font-weight: 500;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}

.cta-button:hover {
  background: rgba(107, 143, 245, 0.15);
  border-color: rgba(107, 143, 245, 0.6);
  color: #fff;
}

/* ── Footer ── */

footer {
  padding: 28px 0;
  border-top: 1px solid var(--border);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.83rem;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  gap: 20px;
}

.footer-links a {
  color: var(--text-muted);
  transition: color 0.15s;
}

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

/* ── Responsive ── */

@media (max-width: 640px) {
  .hero .container {
    flex-direction: column;
    align-items: flex-start;
    gap: 24px;
  }

  .hero-text h1 { font-size: 1.6rem; }

  .project-grid {
    grid-template-columns: 1fr;
  }

  .post {
    grid-template-columns: 60px 1fr 20px;
    gap: 10px;
    padding: 14px 16px;
  }

  .footer-inner {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
}