/* ============================================================================
   gkirgizov.github.io — site styles
   Built on the portable design-foundation tokens (tokens.css). Warm, editorial,
   dark-default, minimalist. Nothing here redefines a token; it only composes.
   ========================================================================== */

:root {
  --nav-h: 64px;
  --maxw: 1080px;
  --maxw-prose: 64ch;
  --maxw-tl: 820px;
}

/* ── Base ──────────────────────────────────────────────────────────────────── */
html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 1rem);
}
body { overflow-x: hidden; }

::selection {
  background: hsl(var(--primary) / 0.85);
  color: hsl(var(--primary-foreground));
}

:focus-visible {
  outline: 2px solid hsl(var(--ring));
  outline-offset: 3px;
  border-radius: 4px;
}

img { max-width: 100%; display: block; }
ul, ol { list-style: none; margin: 0; padding: 0; }

.container {
  width: min(100% - 2.5rem, var(--maxw));
  margin-inline: auto;
}

.icon { flex: none; }

/* ── Reveal-on-scroll (progressive enhancement; only active when JS is on) ──── */
.js .reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.2, 0.7, 0.2, 1);
  will-change: opacity, transform;
}
.js .reveal.is-visible { opacity: 1; transform: none; }

/* ============================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.15rem;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: var(--weight-medium);
  line-height: 1;
  cursor: pointer;
  white-space: nowrap;
  transition: transform 0.18s ease, background-color 0.18s ease,
    border-color 0.18s ease, color 0.18s ease, box-shadow 0.18s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn--primary {
  background: hsl(var(--primary));
  color: hsl(var(--primary-foreground));
  box-shadow: var(--shadow-sm);
}
.btn--primary:hover { box-shadow: var(--shadow-glow); }

.btn--ghost {
  background: var(--control-surface);
  color: hsl(var(--foreground));
  border-color: hsl(var(--border-strong));
}
.btn--ghost:hover {
  background: hsl(var(--accent));
  border-color: hsl(var(--accent));
}

.btn--sm {
  padding: 0.5rem 0.85rem;
  font-size: 0.82rem;
}

/* ============================================================================
   Navigation
   ========================================================================== */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  transition: background-color 0.3s ease, border-color 0.3s ease,
    backdrop-filter 0.3s ease, box-shadow 0.3s ease;
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  background: var(--surface);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom-color: hsl(var(--border) / 0.8);
  box-shadow: var(--shadow-sm);
}
.nav__inner {
  width: min(100% - 2.5rem, var(--maxw));
  margin-inline: auto;
  display: flex;
  align-items: center;
  gap: 1rem;
}
.nav__brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: var(--weight-semibold);
}
.nav__mark {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid hsl(var(--border-strong));
  font-family: var(--font-serif);
  font-size: 0.95rem;
  font-weight: var(--weight-semibold);
  color: hsl(var(--primary));
  letter-spacing: 0.02em;
}
.nav__name { font-size: 0.95rem; letter-spacing: -0.01em; }

.nav__links {
  display: flex;
  gap: 1.6rem;
  margin-left: auto;
  font-size: 0.9rem;
}
.nav__links a {
  position: relative;
  color: var(--text-muted);
  padding: 0.25rem 0;
  transition: color 0.2s ease;
}
.nav__links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  height: 1px;
  width: 0;
  background: hsl(var(--primary));
  transition: width 0.25s ease;
}
.nav__links a:hover { color: hsl(var(--foreground)); }
.nav__links a.is-active { color: hsl(var(--foreground)); }
.nav__links a.is-active::after { width: 100%; }

.nav__actions {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.theme-toggle {
  display: grid;
  place-items: center;
  width: var(--nav-h-btn, 38px);
  height: 38px;
  border-radius: 50%;
  border: 1px solid hsl(var(--border-strong));
  background: var(--control-surface);
  color: hsl(var(--foreground));
  cursor: pointer;
  transition: background-color 0.2s ease, border-color 0.2s ease,
    transform 0.2s ease;
}
.theme-toggle:hover { background: hsl(var(--accent)); transform: translateY(-2px); }
html[data-theme="dark"] .icon-moon { display: none; }
html[data-theme="light"] .icon-sun { display: none; }

/* ============================================================================
   Hero
   ========================================================================== */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding-top: calc(var(--nav-h) + 2rem);
  padding-bottom: 4rem;
  overflow: hidden;
}
.hero__glow {
  position: absolute;
  inset: -20% -10% auto -10%;
  height: 70vh;
  background: var(--gradient-glow);
  pointer-events: none;
  z-index: 0;
}
.hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: clamp(2rem, 6vw, 5rem);
}
.hero__eyebrow {
  color: hsl(var(--primary));
  margin-bottom: 1.1rem;
}
.hero__name {
  font-family: var(--font-serif);
  font-weight: var(--weight-semibold);
  font-size: clamp(3rem, 9vw, 6.5rem);
  line-height: 0.98;
  letter-spacing: -0.02em;
  margin: 0 0 1.5rem;
}
.hero__mission {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(1.2rem, 2.2vw, 1.7rem);
  line-height: 1.4;
  color: var(--text-soft);
  max-width: 42ch;
  margin: 0 0 1.8rem;
}
.hero__mission strong {
  font-weight: var(--weight-semibold);
  font-style: italic;
  color: hsl(var(--foreground));
}
.hero__cta-note {
  margin: 0 0 1.1rem;
  max-width: 46ch;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.15rem;
  line-height: 1.4;
  color: var(--text-soft);
}
.hero__meta {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-subtle);
  margin: 0 0 2.2rem;
  letter-spacing: 0.01em;
}
.hero__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: hsl(var(--success));
  box-shadow: 0 0 0 0 hsl(var(--success) / 0.5);
  animation: pulse 2.6s ease-out infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 hsl(var(--success) / 0.45); }
  70% { box-shadow: 0 0 0 9px hsl(var(--success) / 0); }
  100% { box-shadow: 0 0 0 0 hsl(var(--success) / 0); }
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 0.75rem; }

/* Avatar — monogram base layer; photo (if present) covers it. */
.hero__portrait { justify-self: center; }
.avatar {
  position: relative;
  width: clamp(180px, 22vw, 268px);
  aspect-ratio: 1;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background:
    radial-gradient(circle at 30% 25%, hsl(var(--background-spotlight)), hsl(var(--background-elevated)));
  box-shadow: var(--shadow-card), var(--shadow-glow);
}
.avatar__monogram {
  font-family: var(--font-serif);
  font-size: clamp(3.5rem, 7vw, 5.5rem);
  font-weight: var(--weight-medium);
  color: hsl(var(--primary));
  letter-spacing: 0.02em;
}
.avatar__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
}
.avatar__img.is-missing { display: none; }
.avatar__ring {
  position: absolute;
  inset: -10px;
  border-radius: 50%;
  border: 1px solid hsl(var(--border-strong));
  pointer-events: none;
}

.hero__scroll {
  position: absolute;
  left: 50%;
  bottom: 1.6rem;
  transform: translateX(-50%);
  z-index: 1;
}
.hero__scroll-line {
  display: block;
  width: 1px;
  height: 46px;
  background: linear-gradient(hsl(var(--primary) / 0.7), transparent);
  position: relative;
  overflow: hidden;
}
.hero__scroll-line::after {
  content: "";
  position: absolute;
  top: -50%;
  left: 0;
  width: 100%;
  height: 50%;
  background: hsl(var(--primary));
  animation: scrolldown 2.2s ease-in-out infinite;
}
@keyframes scrolldown {
  0% { transform: translateY(-100%); }
  60%, 100% { transform: translateY(300%); }
}

/* ============================================================================
   Sections (shared)
   ========================================================================== */
.section { padding: clamp(4.5rem, 11vh, 8rem) 0; position: relative; }
.section--alt {
  background: hsl(var(--background-elevated));
  border-block: 1px solid hsl(var(--border) / 0.6);
}
.section__head { margin-bottom: clamp(2.5rem, 5vw, 4rem); }
.section__head--row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.section__eyebrow {
  color: hsl(var(--primary));
  margin-bottom: 0.9rem;
  display: flex;
  align-items: center;
  gap: 0.7rem;
}
.section__eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: hsl(var(--primary) / 0.6);
}
.section__title {
  font-family: var(--font-serif);
  font-weight: var(--weight-semibold);
  font-size: clamp(2rem, 5vw, 3.4rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0;
}

/* ============================================================================
   About
   ========================================================================== */
.about__prose {
  max-width: var(--maxw-prose);
  font-size: clamp(1.05rem, 1.4vw, 1.2rem);
  line-height: 1.7;
  color: var(--text-soft);
}
.about__prose p { margin: 0 0 1.3rem; }
.about__prose p:last-child { margin-bottom: 0; }
.about__prose a {
  color: hsl(var(--primary));
  font-weight: var(--weight-semibold);
  text-decoration: underline;
  text-decoration-color: hsl(var(--primary) / 0.75);
  text-underline-offset: 3px;
  transition: text-decoration-color 0.2s ease, color 0.2s ease;
}
.about__prose a:hover { text-decoration-color: hsl(var(--primary)); }

.pullquote {
  margin: clamp(3rem, 6vw, 4.5rem) 0;
  padding-left: 1.5rem;
  border-left: 2px solid hsl(var(--primary) / 0.6);
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(1.6rem, 4vw, 2.6rem);
  line-height: 1.2;
  color: hsl(var(--foreground));
  max-width: 24ch;
}

.interests__label {
  color: var(--text-subtle);
  margin-bottom: 1.5rem;
}
.interests__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: hsl(var(--border) / 0.6);
  border: 1px solid hsl(var(--border) / 0.6);
  border-radius: var(--radius-card);
  overflow: hidden;
}
.interest {
  position: relative;
  background: hsl(var(--background));
  padding: clamp(1.5rem, 3vw, 2.2rem);
  transition: background-color 0.25s ease;
}
.section--alt .interest { background: hsl(var(--background-elevated)); }
.interest:hover { background: hsl(var(--background-spotlight)); }
.interest__index {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: hsl(var(--primary) / 0.7);
}
.interest__title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: var(--weight-semibold);
  margin: 0.4rem 0 0.7rem;
  letter-spacing: -0.01em;
}
.interest__body {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ============================================================================
   Tags
   ========================================================================== */
.taglist { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.tag {
  font-size: 0.78rem;
  font-weight: var(--weight-medium);
  color: var(--text-muted);
  background: hsl(var(--muted));
  border: 1px solid hsl(var(--border) / 0.7);
  padding: 0.28rem 0.65rem;
  border-radius: var(--radius-pill);
  white-space: nowrap;
}
.taglist--sm .tag { font-size: 0.72rem; padding: 0.22rem 0.55rem; }

/* ============================================================================
   CV — skills
   ========================================================================== */
.skills { margin-bottom: clamp(3.5rem, 7vw, 5.5rem); }
.skills__intro {
  margin: 0 0 clamp(1.8rem, 3.5vw, 2.6rem);
  max-width: 56ch;
  font-family: var(--font-serif);
  font-size: clamp(1.3rem, 2.6vw, 1.9rem);
  font-weight: var(--weight-semibold);
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: hsl(var(--foreground));
}
.skills__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: clamp(1.4rem, 3vw, 2.2rem);
}
.skills__label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-subtle);
  margin: 0 0 0.85rem;
}
.skills__also {
  margin: clamp(2rem, 4vw, 3rem) 0 0;
  padding-top: 1.5rem;
  border-top: 1px solid hsl(var(--border) / 0.6);
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
  max-width: 70ch;
}

/* ============================================================================
   CV — timeline
   ========================================================================== */
.tl {
  position: relative;
  max-width: var(--maxw-tl);
}
.tl::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: linear-gradient(
    hsl(var(--border-strong)),
    hsl(var(--border) / 0.4)
  );
}
.tl__item {
  position: relative;
  padding-left: 2.4rem;
  padding-bottom: clamp(2.5rem, 5vw, 3.5rem);
}
.tl__item:last-child { padding-bottom: 0; }
.tl__dot {
  position: absolute;
  left: 0;
  top: 6px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: hsl(var(--background));
  border: 2px solid hsl(var(--muted-foreground));
}
.section--alt .tl__dot { background: hsl(var(--background-elevated)); }

.tl__meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 0.5rem;
}
.tl__period {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--text-subtle);
  letter-spacing: 0.01em;
}
.chip {
  font-size: 0.66rem;
  font-weight: var(--weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
}
.tl__org {
  font-family: var(--font-serif);
  font-size: clamp(1.4rem, 2.6vw, 1.85rem);
  font-weight: var(--weight-semibold);
  line-height: 1.1;
  letter-spacing: -0.01em;
  margin: 0;
}
.tl__sub {
  margin: 0.25rem 0 0;
  color: var(--text-subtle);
  font-size: 0.9rem;
}
.tl__role {
  margin: 0.5rem 0 0.9rem;
  color: hsl(var(--primary));
  font-weight: var(--weight-semibold);
  font-size: 0.95rem;
}
.tl__summary {
  margin: 0;
  color: var(--text-soft);
  line-height: 1.65;
  max-width: 62ch;
}
.tl__highlights {
  margin: 1rem 0 0;
  display: grid;
  gap: 0.5rem;
  max-width: 64ch;
}
.tl__highlights li {
  position: relative;
  padding-left: 1.2rem;
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.55;
}
.tl__highlights li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 6px;
  height: 1px;
  background: hsl(var(--primary));
}
.tl__body .taglist { margin-top: 1.25rem; }
.tl__links {
  margin: 1rem 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 1.1rem;
}
.tl__links a {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: hsl(var(--primary));
  font-weight: var(--weight-medium);
  font-size: 0.85rem;
  transition: color 0.2s ease;
}
.tl__links a:hover { text-decoration: underline; text-underline-offset: 2px; }
.tl__note {
  margin: 0.9rem 0 0;
  font-style: italic;
  font-size: 0.85rem;
  color: var(--text-subtle);
}

/* Category accents */
.tl__item[data-kind="research"] .tl__dot { border-color: hsl(var(--chart-2)); }
.tl__item[data-kind="engineering"] .tl__dot { border-color: hsl(var(--chart-3)); }
.tl__item[data-kind="art"] .tl__dot { border-color: hsl(var(--chart-4)); }
.tl__item[data-kind="education"] .tl__dot { border-color: hsl(var(--muted-foreground)); }

.chip--research { color: hsl(var(--chart-2)); background: hsl(var(--chart-2) / 0.13); border-color: hsl(var(--chart-2) / 0.3); }
.chip--engineering { color: hsl(var(--chart-3)); background: hsl(var(--chart-3) / 0.13); border-color: hsl(var(--chart-3) / 0.3); }
.chip--art { color: hsl(var(--chart-4)); background: hsl(var(--chart-4) / 0.14); border-color: hsl(var(--chart-4) / 0.32); }
.chip--education { color: var(--text-muted); background: hsl(var(--muted)); border-color: hsl(var(--border) / 0.7); }

/* ============================================================================
   CV — publications
   ========================================================================== */
.pubs {
  margin-top: clamp(3.5rem, 7vw, 5.5rem);
  max-width: var(--maxw-tl);
}
.pubs__label { color: var(--text-subtle); margin-bottom: 1.4rem; }
.pubs__list { display: grid; }
.pub {
  display: grid;
  grid-template-columns: 84px 1fr;
  gap: 1.2rem;
  padding: 1.3rem 0;
  border-top: 1px solid hsl(var(--border) / 0.6);
}
.pub:last-child { border-bottom: 1px solid hsl(var(--border) / 0.6); }
.pub__type {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: hsl(var(--primary));
  padding-top: 0.2rem;
}
.pub__title { margin: 0 0 0.3rem; font-weight: var(--weight-medium); line-height: 1.4; }
.pub__title a {
  display: inline-flex;
  align-items: baseline;
  gap: 0.3rem;
  transition: color 0.2s ease;
}
.pub__title a:hover { color: hsl(var(--primary)); }
.pub__meta { margin: 0; color: var(--text-subtle); font-size: 0.85rem; line-height: 1.5; }

/* ============================================================================
   Projects
   ========================================================================== */
.projects__stream { margin-bottom: clamp(3rem, 6vw, 4.5rem); }
.projects__stream:last-child { margin-bottom: 0; }
.projects__stream-label {
  color: var(--text-subtle);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.8rem;
}
.projects__stream-label::after {
  content: "";
  flex: 1;
  height: 1px;
  background: hsl(var(--border) / 0.6);
}
.cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(1rem, 2vw, 1.4rem);
}
.card {
  display: flex;
  flex-direction: column;
  padding: clamp(1.5rem, 3vw, 2.1rem);
  border-radius: var(--radius-card);
  background: hsl(var(--card));
  border: 1px solid hsl(var(--border) / 0.8);
  transition: transform 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
}
.section--alt .card { background: hsl(var(--background)); }
.card:hover {
  transform: translateY(-4px);
  border-color: hsl(var(--border-strong));
  box-shadow: var(--shadow-lg);
}
.card__top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
}
.card__name {
  font-family: var(--font-serif);
  font-size: clamp(1.4rem, 2.4vw, 1.7rem);
  font-weight: var(--weight-semibold);
  letter-spacing: -0.01em;
  margin: 0;
}
.card__status {
  flex: none;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--text-subtle);
  border: 1px solid hsl(var(--border) / 0.7);
  border-radius: var(--radius-pill);
  padding: 0.2rem 0.55rem;
  white-space: nowrap;
}
.card__status--live {
  color: hsl(var(--destructive));
  border-color: hsl(var(--destructive) / 0.5);
}
.card__tagline {
  margin: 0.5rem 0 0.9rem;
  color: hsl(var(--primary));
  font-size: 0.82rem;
  font-weight: var(--weight-medium);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.card__body {
  margin: 0 0 1.25rem;
  color: var(--text-muted);
  font-size: 0.94rem;
  line-height: 1.6;
  flex: 1;
}
.card__repo {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin-top: 1.2rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-subtle);
  transition: color 0.2s ease, gap 0.2s ease;
}
.card:hover .card__repo { color: hsl(var(--primary)); gap: 0.6rem; }

/* ============================================================================
   Footer
   ========================================================================== */
.footer {
  background: hsl(var(--background-elevated));
  border-top: 1px solid hsl(var(--border) / 0.7);
  padding: clamp(3.5rem, 8vh, 6rem) 0 2.5rem;
}
.footer__eyebrow { color: hsl(var(--primary)); margin-bottom: 1rem; }
.footer__line {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 4vw, 2.6rem);
  font-weight: var(--weight-medium);
  line-height: 1.2;
  letter-spacing: -0.01em;
  max-width: 22ch;
  margin: 0 0 2rem;
}
.footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.4rem;
}
.footer__links a {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: hsl(var(--primary));
  font-weight: var(--weight-medium);
  font-size: 0.92rem;
  transition: color 0.2s ease;
}
.footer__links a:hover { text-decoration: underline; text-underline-offset: 2px; }
.footer__base {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: clamp(3rem, 6vw, 4.5rem);
  padding-top: 1.6rem;
  border-top: 1px solid hsl(var(--border) / 0.6);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--text-subtle);
}

/* ============================================================================
   Responsive
   ========================================================================== */
@media (max-width: 860px) {
  .hero__inner { grid-template-columns: 1fr; gap: 2.5rem; }
  .hero__portrait { order: -1; justify-self: start; }
  .hero__mission { max-width: none; }
  .interests__grid { grid-template-columns: 1fr; }
  .cards { grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
  .nav__name { display: none; }
  .nav__cv { display: none; }
  .nav__links { gap: 1.1rem; }
  .pub { grid-template-columns: 1fr; gap: 0.4rem; }
  .hero__scroll { display: none; }
}

@media (max-width: 420px) {
  .nav__links { display: none; }
}

/* ── Motion preferences ─────────────────────────────────────────────────────
   The foundation sets long ambient durations; here we make sure that users who
   ask for less motion get a still page. */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal { opacity: 1 !important; transform: none !important; transition: none; }
  .hero__dot, .hero__scroll-line::after { animation: none; }
  .btn:hover, .card:hover, .theme-toggle:hover { transform: none; }
}