/* ============================================================
   SECTIONS — layout for each part of the page, top to bottom.
   ============================================================ */

/* ----- Header / navigation ----- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--paper) 86%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.nav__mark {
  font-family: var(--display);
  font-weight: 800;
  font-size: 22px;
  letter-spacing: -0.03em;
}
.nav__mark span { color: var(--rose); }
.nav__links { display: flex; align-items: center; gap: 28px; }
.nav__links a:not(.btn) {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  transition: color .2s ease;
}
.nav__links a:not(.btn):hover { color: var(--ink); }
.nav .btn { padding: 9px 16px; }

/* Menu button — hidden on desktop, shown on small screens */
.nav__toggle {
  display: none;
  background: none;
  border: 1px solid var(--ink);
  border-radius: 999px;
  padding: 8px 14px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink);
  cursor: pointer;
}

/* ----- Hero ----- */
.hero { padding: 86px 0 64px; border-top: none; }
.hero .eyebrow { margin-bottom: 30px; }
.hero h1 {
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(3.6rem, 13.5vw, 12rem);
  line-height: 0.86;
  letter-spacing: -0.045em;
  text-transform: uppercase;
}
.hero h1 .ln { display: block; overflow: hidden; }
.hero h1 em { font-style: normal; color: var(--rose); }
.hero__foot {
  margin-top: 42px;
  display: flex;
  flex-wrap: wrap;
  gap: 34px;
  align-items: flex-end;
  justify-content: space-between;
}
.hero__role { font-size: 18px; color: var(--ink-soft); max-width: 42ch; }
.hero__cta { display: flex; gap: 12px; flex-wrap: wrap; }

/* ----- About ----- */
.about__grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 56px; align-items: start; }
.portrait {
  aspect-ratio: 4 / 5;
  border-radius: 4px;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  background: linear-gradient(135deg, var(--thumb-1), var(--thumb-2));
}
.portrait img { width: 100%; height: 100%; object-fit: cover; }
.about__body p { font-size: 18px; margin-bottom: 18px; max-width: 52ch; }
.about__body p.lead {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(1.4rem, 2.6vw, 1.85rem);
  line-height: 1.3;
  letter-spacing: -0.015em;
}

/* ----- Experience timeline ----- */
.timeline { border-left: 2px solid var(--line); margin-left: 6px; }
.job { position: relative; padding: 0 0 44px 34px; }
.job:last-child { padding-bottom: 0; }
.job::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 4px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--rose);
}
.job__when {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-soft);
}
.job h3 {
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.45rem;
  letter-spacing: -0.02em;
  margin: 8px 0 2px;
}
.job__org { font-weight: 600; color: var(--ink-soft); margin-bottom: 4px; }
.job__meta { font-size: 14px; color: var(--ink-soft); margin-bottom: 10px; }
.job p { font-size: 16px; max-width: 60ch; }

/* ----- Projects ----- */
.work-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }

/* ----- Skills ----- */
.skill-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.skill-cols h3 {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 18px;
}

/* ----- Education ----- */
.edu-row {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 22px 0;
  border-top: 1px solid var(--line);
  flex-wrap: wrap;
}
.edu-row:last-child { border-bottom: 1px solid var(--line); }
.edu-row h3 {
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.3rem;
  letter-spacing: -0.02em;
}
.edu-row .sub { color: var(--ink-soft); font-size: 15px; margin-top: 2px; }
.edu-row .when {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  white-space: nowrap;
}

/* ----- Contact ----- */
.contact { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.contact__big {
  font-family: var(--display);
  font-weight: 600;
  font-size: clamp(2.2rem, 6vw, 4.2rem);
  line-height: 1;
  letter-spacing: -0.03em;
}
.contact__big a { border-bottom: 3px solid var(--rose); transition: color .2s ease; }
.contact__big a:hover { color: var(--rose); }

/* ============================================================
   SMALL SCREENS
   ============================================================ */
@media (max-width: 860px) {
  .about__grid, .contact, .skill-cols { grid-template-columns: 1fr; gap: 36px; }
  .work-grid { grid-template-columns: 1fr; }

  .nav__toggle { display: inline-block; }
  .nav__links {
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 8px var(--gutter) 20px;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    display: none;
  }
  .nav__links.is-open { display: flex; }
  .nav__links a:not(.btn) { padding: 14px 0; width: 100%; border-bottom: 1px solid var(--line); }
  .nav__links .btn { margin-top: 16px; }
}

@media (max-width: 540px) {
  :root { --gutter: 20px; }
  .hero { padding: 60px 0 48px; }
  section { padding: 68px 0; }
  .facts { grid-template-columns: 1fr; }
  .hero__foot { flex-direction: column; align-items: flex-start; }
  .card__body { flex-direction: column; gap: 8px; }
  .card__meta { text-align: left; }
  .card__arrow { margin: 8px auto 0 0; }
}