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

:root {
  --bg: #ffffff;
  --bg-subtle: #f8f9fa;
  --border: #e5e7eb;
  --text: #111827;
  --text-muted: #6b7280;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --max-w: 760px;
}

html { font-size: 16px; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── Nav ── */
nav {
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
}

.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}

.nav-brand {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  font-size: 0.9rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.15s;
}

.nav-links a:hover,
.nav-links a.active { color: var(--text); }

.nav-clock {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.01em;
  white-space: nowrap;
}

/* ── Main ── */
main {
  flex: 1;
  max-width: var(--max-w);
  width: 100%;
  margin: 0 auto;
  padding: 4rem 2rem;
}

/* ── Footer ── */
footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem 2rem;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
}

.footer-linkedin {
  display: inline-flex;
  align-items: center;
  color: var(--text-muted);
  transition: color 0.15s;
}

.footer-linkedin:hover { color: #0a66c2; }
.footer-linkedin svg { display: block; }

/* ── Home ── */
.hero { padding: 3rem 0 4rem; }

.hero h1 {
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 0.5rem;
}

.hero .title {
  font-size: 1.1rem;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 1.25rem;
}

.hero .tagline {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 520px;
  line-height: 1.7;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-top: 3rem;
}

.card-col {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.card {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.75rem;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.card:hover {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.08);
}

.card--locked {
  border-style: dashed;
  opacity: 0.85;
}

.card--locked:hover {
  border-style: dashed;
  opacity: 1;
}

.lock-icon {
  font-size: 0.85rem;
  margin-left: 0.25rem;
}

.card h2 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
}

.card p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.55;
}

/* ── About ── */
.page-header { margin-bottom: 3rem; }

.page-header h1 {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  margin-bottom: 0.35rem;
}

.page-header p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.prose p { margin-bottom: 1.25rem; color: var(--text); line-height: 1.75; }
.prose p:last-child { margin-bottom: 0; }

/* ── Resume ── */
.resume-section { margin-bottom: 3rem; }

.resume-section h2 {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.resume-item { margin-bottom: 1.75rem; }

.resume-item:last-child { margin-bottom: 0; }

.resume-item-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 0.2rem;
  gap: 1rem;
}

.resume-item h3 {
  font-size: 0.95rem;
  font-weight: 600;
}

.resume-item .meta {
  font-size: 0.8rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.resume-item .org {
  font-size: 0.875rem;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.resume-item ul {
  list-style: none;
  padding: 0;
}

.resume-item ul li {
  font-size: 0.875rem;
  color: var(--text-muted);
  padding-left: 1rem;
  position: relative;
  margin-bottom: 0.3rem;
  line-height: 1.55;
}

.resume-item ul li::before {
  content: "–";
  position: absolute;
  left: 0;
  color: var(--border);
}

.skills-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.skill-tag {
  font-size: 0.8rem;
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.25rem 0.65rem;
  color: var(--text);
}

.resume-actions {
  display: flex;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 7px;
  text-decoration: none;
  transition: background 0.15s, color 0.15s;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover { background: var(--accent-hover); }

.btn-ghost {
  border: 1px solid var(--border);
  color: var(--text);
}

.btn-ghost:hover { background: var(--bg-subtle); }

/* ── Responsive ── */
@media (max-width: 720px) {
  .hero h1 { font-size: 1.85rem; }
  .card-grid { grid-template-columns: 1fr; }
  .resume-item-header { flex-direction: column; gap: 0; }
}