/* ── Tokens ─────────────────────────────────────── */
:root {
  --bg:       #ffffff;
  --text:     #111111;
  --muted:    #666666;
  --border:   #e5e5e5;
  --accent:   #0066cc;
  --surface:  #f7f7f7;
  --font:     'Inter', sans-serif;
}

/* ── Reset ──────────────────────────────────────── */
*, *::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);
  font-size: 1rem;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

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

/* ── Nav ────────────────────────────────────────── */
nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 2.5rem;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: var(--bg);
  z-index: 10;
}

.nav-logo {
  font-weight: 600;
  font-size: 1rem;
  color: var(--text);
}

.nav-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.nav-linkedin {
  font-size: 1.2rem;
  color: #0077b5;
  transition: opacity 0.15s;
}
.nav-linkedin:hover { opacity: 0.7; text-decoration: none; }

nav a {
  font-size: 0.875rem;
  color: var(--muted);
}
nav a:hover { color: var(--accent); text-decoration: none; }

/* ── Main ───────────────────────────────────────── */
main {
  max-width: 680px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* ── Sections ───────────────────────────────────── */
section {
  padding: 4.5rem 0;
  border-bottom: 1px solid var(--border);
}
section:last-of-type { border-bottom: none; }

section h2 {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 2rem;
}

/* ── Hero ───────────────────────────────────────── */
.hero {
  padding-top: 6rem;
}

.hero h1 {
  font-size: clamp(1.75rem, 5vw, 2.75rem);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 1rem;
}

.tagline {
  color: var(--muted);
  font-size: 0.95rem;
  margin-bottom: 2.25rem;
}

.cta-row {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

/* ── Buttons ────────────────────────────────────── */
.btn-primary {
  display: inline-block;
  padding: 0.65rem 1.5rem;
  background: var(--text);
  color: var(--bg);
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: 6px;
  transition: opacity 0.15s;
}
.btn-primary:hover { opacity: 0.8; text-decoration: none; }

.btn-secondary {
  display: inline-block;
  padding: 0.65rem 1.5rem;
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: 6px;
  transition: border-color 0.15s;
}
.btn-secondary:hover { border-color: #999; text-decoration: none; }

/* ── About ──────────────────────────────────────── */
.about p {
  color: #333;
  margin-bottom: 1rem;
  font-size: 1rem;
}
.about p:last-child { margin-bottom: 0; }

/* ── Education ──────────────────────────────────── */
.edu-item {
  margin-bottom: 2rem;
}
.edu-item:last-child { margin-bottom: 0; }

.edu-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.25rem;
}

.edu-date {
  font-size: 0.825rem;
  color: var(--muted);
}

.edu-badge {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: #e8f0fb;
  color: var(--accent);
  padding: 0.15rem 0.55rem;
  border-radius: 4px;
}

.edu-item h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.15rem;
}

.edu-item p {
  font-size: 0.9rem;
  color: var(--muted);
}

/* ── Interests ──────────────────────────────────── */
.interest-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.interest-list li {
  font-size: 1rem;
  color: #333;
  padding-left: 1rem;
  position: relative;
}

.interest-list li::before {
  content: '–';
  position: absolute;
  left: 0;
  color: var(--muted);
}

/* ── Contact ────────────────────────────────────── */
.contact p {
  color: #333;
  margin-bottom: 1.75rem;
  max-width: 480px;
}

.social-links {
  margin-top: 1.25rem;
  display: flex;
  gap: 1.5rem;
}

.social-links a {
  font-size: 0.875rem;
  color: var(--muted);
  transition: color 0.15s;
}
.social-links a:hover { color: var(--accent); text-decoration: none; }

/* ── Footer ─────────────────────────────────────── */
footer {
  padding: 2rem 2.5rem;
  font-size: 0.8rem;
  color: var(--muted);
  border-top: 1px solid var(--border);
  text-align: center;
}

/* ── Responsive ─────────────────────────────────── */
@media (max-width: 600px) {
  nav { padding: 1.25rem 1.25rem; }
  main { padding: 0 1.25rem; }
  .hero { padding-top: 4rem; }
  .cta-row { flex-direction: column; }
}