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

:root {
  --text: #1a1a1a;
  --muted: #6b7280;
  --accent: #2563eb;
  --accent-light: #eff6ff;
  --border: #e5e7eb;
  --bg: #ffffff;
  --max: 680px;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

html { font-size: 16px; -webkit-font-smoothing: antialiased; }
body { font-family: var(--font); background: var(--bg); color: var(--text); line-height: 1.7; padding: 0 24px; }

/* ── Nav ── */
nav {
  max-width: var(--max);
  margin: 0 auto;
  padding: 28px 0 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: -0.02em;
  color: var(--text);
  text-decoration: none;
}
.nav-links { display: flex; gap: 28px; list-style: none; }
.nav-links a { font-size: 0.875rem; color: var(--muted); text-decoration: none; transition: color 0.15s; }
.nav-links a:hover, .nav-links a.active { color: var(--text); font-weight: 500; }

/* ── Layout ── */
.container { max-width: var(--max); margin: 0 auto; padding: 64px 0 96px; }
hr { border: none; border-top: 1px solid var(--border); margin: 40px 0; }
section { margin-bottom: 48px; }

.section-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 20px;
}

/* ── Page title ── */
.page-title {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 8px;
}
.page-subtitle { font-size: 1rem; color: var(--muted); margin-bottom: 0; }

/* ── Homepage header ── */
.name {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
}
.tagline { font-size: 1.05rem; color: var(--muted); max-width: 520px; margin-bottom: 24px; }

.resume-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--accent);
  text-decoration: none;
  border: 1.5px solid var(--accent);
  padding: 8px 16px;
  border-radius: 6px;
  transition: background 0.15s, color 0.15s;
}
.resume-link:hover { background: var(--accent); color: #fff; }
.resume-link svg { flex-shrink: 0; }

/* ── Impact list ── */
.impact-list { list-style: none; display: flex; flex-direction: column; gap: 14px; }
.impact-list li { display: flex; align-items: flex-start; gap: 12px; font-size: 0.975rem; }
.impact-list li::before {
  content: '';
  display: block;
  width: 6px; height: 6px;
  background: var(--accent);
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 9px;
}

/* ── Contact ── */
.contact-grid { display: flex; flex-direction: column; gap: 10px; }
.contact-row { display: flex; align-items: center; gap: 10px; font-size: 0.925rem; }
.contact-row .label { font-weight: 500; color: var(--muted); width: 72px; flex-shrink: 0; }
.contact-row a { color: var(--accent); text-decoration: none; }
.contact-row a:hover { text-decoration: underline; }

/* ── About: bio ── */
.bio { font-size: 1rem; color: var(--text); max-width: 600px; }

/* ── About: skills grid ── */
.skills-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.skill-block { }
.skill-block h4 { font-size: 0.825rem; font-weight: 600; color: var(--text); margin-bottom: 4px; }
.skill-block p { font-size: 0.875rem; color: var(--muted); line-height: 1.6; }

/* ── About: timeline ── */
.timeline { display: flex; flex-direction: column; gap: 32px; }
.timeline-item { display: grid; grid-template-columns: 140px 1fr; gap: 20px; }
.timeline-date { font-size: 0.8rem; color: var(--muted); padding-top: 3px; line-height: 1.5; }
.timeline-body h4 { font-size: 0.975rem; font-weight: 600; margin-bottom: 2px; }
.timeline-body .company { font-size: 0.875rem; color: var(--muted); margin-bottom: 6px; }
.timeline-body p { font-size: 0.875rem; color: var(--muted); }

/* ── Home: marquee logos ── */
.marquee-logos {
  display: flex;
  align-items: center;
  gap: 32px;
  flex-wrap: nowrap;
  margin: 40px 0;
}
.marquee-logos img {
  height: 32px;
  width: 32px;
  object-fit: contain;
  object-position: center;
  flex-shrink: 0;
  filter: grayscale(100%) opacity(0.35);
  transition: filter 0.2s;
}
.marquee-logos img:hover { filter: grayscale(100%) opacity(0.65); }

/* ── Projects: app cards ── */
.card-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
  transition: border-color 0.15s, box-shadow 0.15s;
  text-decoration: none;
  color: inherit;
}
.card:hover { border-color: var(--accent); box-shadow: 0 2px 12px rgba(37,99,235,0.08); }
.card h3 { margin-bottom: 6px; }
.card p { font-size: 0.85rem; color: var(--muted); line-height: 1.6; flex: 1; }
.card-footer { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-top: 16px; }
.card-logos { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.card-logos img { height: 24px; width: auto; object-fit: contain; filter: grayscale(100%) opacity(0.4); transition: filter 0.2s; }
.card:hover .card-logos img { filter: grayscale(100%) opacity(0.65); }
.card-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-light);
  padding: 2px 8px;
  border-radius: 4px;
  white-space: nowrap;
}
.card h3 { font-size: 0.975rem; font-weight: 600; margin-bottom: 6px; }
.card p { font-size: 0.85rem; color: var(--muted); line-height: 1.6; }

/* ── Projects: case studies ── */
.case-studies { display: flex; flex-direction: column; gap: 28px; }
.case-study { border-left: 2px solid var(--border); padding-left: 20px; }
.case-study:hover { border-left-color: var(--accent); }
.case-study .cs-meta { font-size: 0.78rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.07em; margin-bottom: 6px; }
.case-study h3 { font-size: 1rem; font-weight: 600; margin-bottom: 6px; }
.case-study p { font-size: 0.9rem; color: var(--muted); }
.case-study .cs-outcome {
  display: inline-block;
  margin-top: 10px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
}

/* ── Case study logos ── */
.cs-logos { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; margin: 14px 0 4px; }
.cs-logos img { height: 44px; width: auto; filter: grayscale(100%) opacity(0.45); transition: filter 0.2s; object-fit: contain; }
.case-study:hover .cs-logos img { filter: grayscale(100%) opacity(0.65); }

/* ── Footer ── */
footer { margin-top: 64px; padding-top: 24px; border-top: 1px solid var(--border); font-size: 0.8rem; color: var(--muted); }

/* ── Responsive ── */
@media (max-width: 540px) {
  .name { font-size: 1.6rem; }
  .container { padding: 48px 0 64px; }
  .skills-grid { grid-template-columns: 1fr; }
  .card-grid { grid-template-columns: 1fr; }
  .timeline-item { grid-template-columns: 1fr; gap: 4px; }
}