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

:root {
  --bg:         #1e1e1e;
  --bg-card:    #272727;
  --bg-nav:     rgba(30, 30, 30, 0.88);
  --text:       #f2f2f2;
  --text-sub:   #909090;
  --text-dim:   #606060;
  --border:     #333333;
  --border-mid: #484848;
  --max-w:      1100px;
  --pad:        clamp(1.5rem, 5vw, 4rem);
  --sans:       'Inter', system-ui, sans-serif;
}

html { scroll-behavior: smooth; }

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

a { color: inherit; }

/* ─── Nav ─── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-nav);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--pad);
  height: 56px;
}

.nav-brand {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: 2.25rem;
}

.nav-links a {
  font-size: 0.82rem;
  font-weight: 500;
  text-decoration: none;
  color: var(--text-sub);
  letter-spacing: 0.02em;
  transition: color 0.18s ease;
}

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

/* ─── Main ─── */
main {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--pad);
}

/* ─── Hero ─── */
.hero {
  padding-top: 3.5rem;
  padding-bottom: 3rem;
}

.hero-name {
  font-size: clamp(3rem, 9.5vw, 7.5rem);
  font-weight: 700;
  line-height: 0.92;
  letter-spacing: -0.02em;
  white-space: nowrap;
  color: var(--text);
}

/* Thin separator row — the visual break between name and tagline */
.hero-separator {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: 1rem 0;
  margin: 2.25rem 0 2.5rem;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  font-family: var(--sans);
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.07em;
  color: var(--text-dim);
}

/* Tagline: two lines, right-aligned. Outline + solid contrast. */
.tagline {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  text-align: right;
  font-size: clamp(3.2rem, 8.5vw, 7rem);
  font-weight: 700;
  line-height: 0.96;
  letter-spacing: -0.03em;
}

.tagline-outline {
  display: block;
  /* hollow text — editorial contrast */
  color: transparent;
  -webkit-text-stroke: 1.5px var(--border-mid);
}

.tagline-solid {
  display: block;
  color: var(--text);
}

/* ─── Bio ─── */
.bio {
  margin-top: 0;
  padding-top: 3rem;
  border-top: 1px solid var(--border);
  margin-bottom: 5rem;
}

.bio p {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text-sub);
  max-width: 500px;
}

/* ─── Projects ─── */
.projects {
  margin-bottom: 8rem;
}

.section-label {
  display: block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 2rem;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}

.project-card-filler {
  background: var(--bg-card);
}

.project-card {
  background: var(--bg-card);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: background 0.2s ease, border-color 0.2s ease;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
}

.project-card:hover {
  background: #2e2e2e;
}

.card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
}

.card-name {
  font-family: var(--sans);
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.3;
  color: var(--text);
}

.card-lang {
  flex-shrink: 0;
  font-family: var(--sans);
  font-size: 0.6rem;
  font-weight: 500;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  border: 1px solid var(--border-mid);
  padding: 0.18rem 0.5rem;
  color: var(--text-sub);
}

.card-desc {
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--text-sub);
  flex: 1;
}


/* ─── Footer ─── */
.footer {
  border-top: 1px solid var(--border);
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 2rem var(--pad);
  font-size: 0.75rem;
  color: var(--text-dim);
  letter-spacing: 0.04em;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
}

.footer-links a {
  color: var(--text-dim);
  text-decoration: none;
  letter-spacing: 0.04em;
}

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

/* ─── Nav active state ─── */
.nav-active {
  color: var(--text) !important;
}

/* ─── About page ─── */
.about-section {
  border-top: 1px solid var(--border);
  padding: 3rem 0;
}

.about-row {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 3rem;
}

.about-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-dim);
  padding-top: 0.2rem;
}

.about-body {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.about-body p {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text-sub);
  max-width: 520px;
}

/* Stack grid */
.stack-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.stack-heading {
  display: block;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 0.75rem;
}

.stack-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.stack-list li {
  font-size: 0.9rem;
  color: var(--text-sub);
}

/* Education */
.edu-item {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.edu-header {
  display: flex;
  align-items: baseline;
  gap: 1rem;
}

.edu-school {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
}

.edu-year {
  font-size: 0.78rem;
  color: var(--text-dim);
}

.edu-degree {
  font-size: 0.85rem;
  color: var(--text-sub);
}

.edu-desc {
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--text-sub);
  max-width: 480px;
  margin-top: 0.25rem;
}

.cert-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin-top: 0.75rem;
  font-size: 0.78rem;
  font-weight: 500;
  text-decoration: none;
  color: var(--text-dim);
  border: 1px solid var(--border);
  padding: 0.4rem 0.75rem;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.cert-link:hover {
  color: var(--text);
  border-color: var(--border-mid);
}

/* ─── Contact ─── */
.contact-links {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.contact-link {
  font-size: 0.88rem;
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.18s ease;
}

.contact-link:hover {
  color: var(--text);
}

/* ─── Responsive ─── */
@media (max-width: 768px) {
  .hero-name {
    font-size: clamp(2.2rem, 11vw, 3.5rem);
    white-space: normal;
  }

  .hero-separator {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }

  .tagline {
    align-items: flex-start;
    text-align: left;
    font-size: clamp(2.8rem, 12vw, 4.5rem);
  }

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

  .bio,
  .projects {
    margin-bottom: 4rem;
  }

  .about-row {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .stack-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}