/* ===================================================================
   layout.css — shell (sidebar + content), hero, sections, footer.

   Desktop: a fixed-feel left sidebar carries all wayfinding —
   monogram, section nav (scroll-spy active state), résumé, theme.
   Content is a single measured column. On small screens the
   sidebar collapses to a slim static header row.
=================================================================== */

/* ---- shell ---- */
.shell { display: block; }

@media (min-width: 900px) {
  .shell {
    display: grid;
    grid-template-columns: 216px minmax(0, 1fr);
  }
  .sidebar {
    position: sticky; top: 0;
    height: 100vh; height: 100dvh;
    align-self: start;
  }
}

/* ---- sidebar ---- */
.sidebar {
  display: flex; flex-direction: column;
  padding: 2.2rem 1.6rem 1.6rem 2rem;
  gap: 2.2rem;
}
.side-mark { display: inline-flex; width: 34px; }
.side-mark img { width: 34px; height: 34px; border-radius: 8px; display: block; }

.side-nav { display: flex; flex-direction: column; gap: 0.15rem; }
.side-nav a {
  font-family: var(--font-mono);
  font-size: 0.8rem; letter-spacing: 0.04em;
  color: var(--ink-3);
  padding: 0.32rem 0.6rem; margin-left: -0.6rem;
  border-radius: 6px;
  transition: color 0.15s ease, background 0.15s ease;
}
.side-nav a:hover { color: var(--ink); text-decoration: none; }
.side-nav a.active {
  color: var(--ink);
  background: color-mix(in srgb, var(--ink) 6%, transparent);
}

.side-foot {
  margin-top: auto;
  display: flex; flex-direction: column; gap: 0.8rem;
  align-items: flex-start;
}
.side-foot a { font-family: var(--font-mono); font-size: 0.78rem; }

.theme-toggle {
  display: grid; place-items: center;
  width: 30px; height: 30px;
  background: none; border: 1px solid var(--rule); border-radius: 7px;
  cursor: pointer; color: var(--ink-2); padding: 0;
}
.theme-toggle:hover { color: var(--ink); border-color: var(--ink-3); }
.icon-sun { display: none; }
[data-theme='dark'] .icon-sun { display: block; }
[data-theme='dark'] .icon-moon { display: none; }

@media (max-width: 899px) {
  .sidebar {
    flex-direction: row; align-items: center;
    padding: 0.8rem var(--pad-x);
    gap: 1rem;
    border-bottom: 1px solid var(--rule);
    position: sticky; top: 0; z-index: 20;
    background: var(--paper);
  }
  .side-mark, .side-mark img { width: 26px; }
  .side-mark img { height: 26px; border-radius: 6px; }
  .side-nav { display: none; }
  .side-foot { margin-top: 0; margin-left: auto; flex-direction: row; align-items: center; }
}

/* ---- content column ---- */
.wrap {
  max-width: var(--wrap-max);
  padding-inline: var(--pad-x);
}
@media (min-width: 900px) {
  .wrap { padding-inline: clamp(2rem, 6vw, 4.5rem) var(--pad-x); }
}

/* ---- hero ---- */
.hero { padding-block: 5.5rem 3.5rem; }
.hero-top {
  display: flex; align-items: center; gap: 2rem;
  justify-content: space-between;
}
.hero-name {
  font-family: var(--font-serif);
  font-size: clamp(2.3rem, 5.5vw, 3.2rem);
  font-weight: 500; letter-spacing: -0.015em;
}
.hero-photo {
  width: 96px; height: 96px; border-radius: 50%;
  object-fit: cover; flex-shrink: 0;
  filter: grayscale(1);
  transition: filter 0.35s ease;
}
.hero-photo:hover { filter: grayscale(0); }
.hero-thesis {
  font-family: var(--font-serif);
  font-style: italic; font-weight: 400;
  font-size: clamp(1.15rem, 2.6vw, 1.4rem);
  line-height: 1.55;
  color: var(--ink-2);
  max-width: 34em;
  margin: 1.1rem 0 1.4rem;
}
.hero-meta { color: var(--ink-2); font-size: 0.95rem; margin-bottom: 0.5rem; }
.hero-facts { color: var(--ink-3); margin-bottom: 2rem; }
.hero-links { display: flex; flex-wrap: wrap; gap: 1.5rem; }
.hero-links a {
  font-family: var(--font-mono);
  font-size: 0.8rem; font-weight: 500; letter-spacing: 0.03em;
}

@media (max-width: 560px) {
  .hero { padding-block: 3.5rem 2.5rem; }
  .hero-top { flex-direction: column-reverse; align-items: flex-start; gap: 1.4rem; }
  .hero-photo { width: 80px; height: 80px; }
}

/* one orchestrated moment: hero rises on load, nothing else moves */
.hero > * { animation: rise 0.55s ease both; }
.hero > *:nth-child(2) { animation-delay: 0.06s; }
.hero > *:nth-child(3) { animation-delay: 0.12s; }
.hero > *:nth-child(4) { animation-delay: 0.18s; }
.hero > *:nth-child(5) { animation-delay: 0.24s; }
@keyframes rise {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: none; }
}

/* ---- sections ---- */
.sec { margin-block: 4.5rem; }
.sec-label {
  font-family: var(--font-mono);
  font-size: 0.72rem; font-weight: 500;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 1.3rem;
}
.sec-body { max-width: var(--prose-max); }
.sec-intro { color: var(--ink-2); font-size: 0.95rem; margin-bottom: 1.4rem; }
.sec-after { margin-top: 1.2rem; }

/* ---- footer ---- */
.footer {
  border-top: 1px solid var(--rule);
  margin-top: 5rem;
  padding-block: 1.6rem 2.2rem;
}
.footer-inner {
  display: flex; justify-content: space-between; align-items: baseline;
  gap: 1rem; flex-wrap: wrap;
  color: var(--ink-3);
}