/* ===========================================
   DESIGN TOKENS
   =========================================== */
:root {
  --clr-bg:           #F5F5F0;
  --clr-surface:      #ffffff;
  --clr-surface-2:    #EEEEE8;
  --clr-navy:         #0A1628;
  --clr-teal:         #00BFA6;
  --clr-teal-dim:     rgba(0, 191, 166, 0.12);
  --clr-teal-hover:   #009d88;
  --clr-gold:         #C9A84C;
  --clr-gold-dim:     rgba(201, 168, 76, 0.15);
  --clr-text:         #0F1C2E;
  --clr-text-muted:   #556070;
  --clr-border:       rgba(10, 22, 40, 0.10);
  --clr-nav-bg:       rgba(245, 245, 240, 0.82);

  --font-sans: 'DM Sans', 'Inter', system-ui, -apple-system, sans-serif;
  --font-serif: 'Lora', 'Georgia', serif;

  --nav-h: 68px;
  --section-py: clamp(5rem, 9vw, 9rem);
  --container-w: 1100px;
  --radius-sm: 6px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --radius-xl: 32px;

  --shadow-sm: 0 1px 4px rgba(10,22,40,.06), 0 2px 8px rgba(10,22,40,.04);
  --shadow-md: 0 4px 20px rgba(10,22,40,.08), 0 1px 4px rgba(10,22,40,.04);
  --shadow-lg: 0 12px 40px rgba(10,22,40,.10), 0 4px 12px rgba(10,22,40,.06);

  --transition: 0.22s ease;
}

[data-theme="dark"] {
  --clr-bg:           #0A1628;
  --clr-surface:      #0f2040;
  --clr-surface-2:    #152b52;
  --clr-text:         #EAE9E3;
  --clr-text-muted:   #8fa3bb;
  --clr-border:       rgba(255, 255, 255, 0.08);
  --clr-nav-bg:       rgba(10, 22, 40, 0.88);

  --shadow-sm: 0 1px 4px rgba(0,0,0,.25);
  --shadow-md: 0 4px 20px rgba(0,0,0,.35);
  --shadow-lg: 0 12px 40px rgba(0,0,0,.45);
}

/* ===========================================
   RESET & BASE
   =========================================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--clr-text);
  background-color: var(--clr-bg);
  transition: background-color 0.3s ease, color 0.3s ease;
}

img { max-width: 100%; display: block; }

a { color: inherit; text-decoration: none; }

button { font: inherit; cursor: pointer; border: none; background: none; }

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.2;
}

p { margin-bottom: 1.2em; }
p:last-child { margin-bottom: 0; }

ul, ol { padding-left: 1.4em; }
li { margin-bottom: 0.4em; }

strong { font-weight: 600; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ===========================================
   LAYOUT UTILITIES
   =========================================== */
.container {
  width: min(var(--container-w), 100% - 2.5rem);
  margin-inline: auto;
}

.section {
  padding-block: var(--section-py);
}

/* ===========================================
   NAVIGATION
   =========================================== */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  background: var(--clr-nav-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--clr-border);
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

.nav.scrolled {
  box-shadow: var(--shadow-md);
}

.nav__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.nav__logo {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: 0.04em;
  color: var(--clr-navy);
  flex-shrink: 0;
  transition: opacity var(--transition);
}

[data-theme="dark"] .nav__logo { color: var(--clr-text); }

.nav__logo:hover { opacity: 0.7; }

.nav__right {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
}

.nav__link {
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
  font-size: 0.925rem;
  font-weight: 500;
  color: var(--clr-text-muted);
  transition: color var(--transition), background var(--transition);
}

.nav__link:hover, .nav__link:focus-visible {
  color: var(--clr-text);
  background: var(--clr-teal-dim);
}

/* Theme toggle */
.theme-toggle {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid var(--clr-border);
  color: var(--clr-text-muted);
  transition: background var(--transition), color var(--transition), transform var(--transition);
  flex-shrink: 0;
}

.theme-toggle:hover {
  background: var(--clr-teal-dim);
  color: var(--clr-teal);
  transform: rotate(12deg);
}

/* Show sun in dark mode, moon in light mode */
.icon-sun  { display: none; }
.icon-moon { display: block; }
[data-theme="dark"] .icon-sun  { display: block; }
[data-theme="dark"] .icon-moon { display: none; }

/* Hamburger */
.nav__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 38px;
  height: 38px;
  padding: 8px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--clr-border);
  flex-shrink: 0;
}

.nav__hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--clr-text);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
  transform-origin: center;
}

.nav__hamburger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav__hamburger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav__hamburger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===========================================
   HERO
   =========================================== */
.hero {
  min-height: 100svh;
  position: relative;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-block: calc(var(--nav-h) + 3rem) 5rem;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 70% 30%, rgba(0,191,166,0.12) 0%, transparent 60%),
    radial-gradient(ellipse 50% 60% at 20% 80%, rgba(0,191,166,0.07) 0%, transparent 50%),
    url('../assets/images/Zebrafish_embryos.jpg') center / cover no-repeat,
    var(--clr-navy);
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    160deg,
    rgba(10,22,40,0.55) 0%,
    rgba(10,22,40,0.30) 50%,
    rgba(10,22,40,0.65) 100%
  );
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 720px;
  background: rgba(8, 18, 42, 0.62);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: 20px;
  padding: 2.5rem 3rem;
  border: 1px solid rgba(0, 191, 166, 0.12);
}


.hero__name {
  font-size: clamp(3.2rem, 5.5vw, 6rem);
  font-weight: 700;
  color: #ffffff;
  letter-spacing: -0.01em;
  margin-bottom: 1rem;
}

.hero__lower {
  display: flex;
  align-items: center;
  gap: 2rem;
  margin-bottom: 2.5rem;
}

.hero__lower-logo {
  flex: 0 0 46%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero__big-logo {
  width: 100%;
  max-width: 315px;
  height: auto;
  object-fit: contain;
}

.hero__lower-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

.hero__info-line {
  font-size: clamp(0.95rem, 1.55vw, 1.075rem);
  color: rgba(255,255,255,0.85);
  font-weight: 500;
  margin-bottom: 0;
  line-height: 1.55;
  letter-spacing: 0.01em;
}

.hero__tagline {
  font-size: clamp(0.875rem, 1.35vw, 0.975rem);
  color: rgba(255,255,255,0.60);
  line-height: 1.6;
  margin-bottom: 0;
  margin-top: 0.65rem;
  font-style: italic;
}

.hero__tagline-link {
  color: var(--clr-teal);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.hero__tagline-link:hover {
  color: #fff;
}

.hero__ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}

/* ===========================================
   BUTTONS
   =========================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.6rem;
  border-radius: 999px;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease, border-color 0.18s ease;
  border: 2px solid transparent;
  white-space: nowrap;
}

.btn:hover, .btn:focus-visible {
  transform: translateY(-2px);
}

.btn:active { transform: translateY(0); }

.btn--primary {
  background: var(--clr-teal);
  color: #ffffff;
  border-color: var(--clr-teal);
}

.btn--primary:hover {
  background: var(--clr-teal-hover);
  border-color: var(--clr-teal-hover);
  box-shadow: 0 8px 24px rgba(0,191,166,0.35);
}

.btn--outline {
  background: transparent;
  color: #ffffff;
  border-color: rgba(255,255,255,0.45);
}

.btn--outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.70);
}

.btn--sm {
  padding: 0.45rem 1rem;
  font-size: 0.875rem;
}

.btn--ghost {
  background: transparent;
  color: var(--clr-teal);
  border-color: var(--clr-teal);
}

.btn--ghost:hover {
  background: var(--clr-teal-dim);
  box-shadow: 0 4px 14px rgba(0,191,166,0.2);
}

/* ===========================================
   SECTION HEADINGS
   =========================================== */
.section__heading {
  font-size: clamp(2rem, 3vw, 2.8rem);
  font-weight: 700;
  color: var(--clr-text);
  margin-bottom: 0.5rem;
}

.section__heading::after {
  content: '';
  display: block;
  width: 44px;
  height: 3px;
  background: var(--clr-teal);
  border-radius: 2px;
  margin-top: 0.6rem;
}

.section__subhead {
  font-size: 1.0625rem;
  color: var(--clr-text-muted);
  max-width: 580px;
  margin-bottom: 3rem;
}

/* ===========================================
   ABOUT
   =========================================== */
.about .section__heading { margin-bottom: 2.5rem; }

.about__grid {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 4rem;
  align-items: start;
}

.about__photo-wrap {
  position: sticky;
  top: calc(var(--nav-h) + 1.5rem);
}

.photo-placeholder {
  width: 100%;
  aspect-ratio: 4 / 5;
  display: grid;
  place-items: center;
  background: linear-gradient(145deg, var(--clr-surface-2) 0%, var(--clr-surface) 100%);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-xl);
  font-family: var(--font-serif);
  font-size: 4rem;
  font-weight: 700;
  color: var(--clr-teal);
  letter-spacing: 0.04em;
  user-select: none;
  box-shadow: var(--shadow-md);
}

.about__photo-img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--clr-border);
}

.about__lab-card {
  display: flex;
  align-items: center;
  gap: 1.1rem;
  margin-top: 1rem;
  padding: 1rem 1.25rem;
  background: var(--clr-surface-2);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
}

.about__lab-logo {
  width: 192px;
  height: 192px;
  object-fit: contain;
  flex-shrink: 0;
}

.about__lab-text {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.about__lab-name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--clr-heading);
}

.about__lab-pi {
  font-size: 0.9rem;
  color: var(--clr-text-muted);
  font-style: italic;
}

.about__bio p {
  color: var(--clr-text);
  line-height: 1.8;
}

.about__bio a {
  color: var(--clr-teal);
  text-decoration: none;
}

.about__bio a:hover {
  text-decoration: underline;
}

.about__name-highlight {
  color: var(--clr-teal);
}

.about__social {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

.social-link {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.55rem 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--clr-border);
  background: var(--clr-surface);
  color: var(--clr-text-muted);
  font-size: 0.875rem;
  font-weight: 500;
  transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition);
  box-shadow: var(--shadow-sm);
}

.social-link:hover, .social-link:focus-visible {
  background: var(--clr-teal-dim);
  color: var(--clr-teal);
  border-color: rgba(0,191,166,0.25);
  transform: translateY(-1px);
}

/* ===========================================
   RESEARCH / BLOG CARDS
   =========================================== */
.research { background: var(--clr-surface-2); }
[data-theme="dark"] .research { background: var(--clr-surface); }

.research .section__heading { margin-bottom: 0.5rem; }

.blog-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.blog-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-xl);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0;
  box-shadow: var(--shadow-sm);
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
  text-decoration: none;
  color: var(--clr-text);
}

[data-theme="dark"] .blog-card {
  background: var(--clr-surface-2);
}

.blog-card:hover, .blog-card:focus-within {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(0,191,166,0.2);
}

.blog-card--pinned {
  grid-column: 1 / -1;
  border-left: 4px solid var(--clr-teal);
}

.blog-card--pinned .blog-card__title {
  font-size: clamp(1.1rem, 2vw, 1.45rem);
}

.blog-card__pin-label {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: var(--clr-teal-dim);
  color: var(--clr-teal);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  margin-bottom: 1rem;
  font-family: var(--font-sans);
  flex-shrink: 0;
}

.blog-card__date {
  font-size: 0.85rem;
  color: var(--clr-text-muted);
  margin-bottom: 0.6rem;
  font-weight: 400;
}

.blog-card__title {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--clr-text);
  margin-bottom: 0.9rem;
  line-height: 1.35;
}

.blog-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1rem;
}

.tag {
  background: var(--clr-teal-dim);
  color: var(--clr-teal);
  padding: 0.25rem 0.7rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 500;
  font-family: var(--font-sans);
  white-space: nowrap;
}

.blog-card__excerpt {
  font-size: 0.95rem;
  color: var(--clr-text-muted);
  line-height: 1.65;
  flex: 1;
  margin-bottom: 1.25rem;
}

.blog-card__read {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--clr-teal);
  font-weight: 600;
  font-size: 0.9rem;
  transition: gap 0.18s ease;
  margin-top: auto;
}

.blog-card:hover .blog-card__read,
.blog-card:focus-within .blog-card__read { gap: 0.6rem; }

.blog-card__coming {
  display: inline-block;
  color: var(--clr-text-muted);
  font-size: 0.85rem;
  margin-top: auto;
  font-style: italic;
}

/* ===========================================
   PUBLICATIONS (hidden by default)
   =========================================== */
.pub-list { display: flex; flex-direction: column; gap: 1.5rem; }

.pub-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
}

.pub-card__meta {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  margin-bottom: 0.6rem;
}

.pub-card__year {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--clr-teal);
  background: var(--clr-teal-dim);
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
}

.pub-card__journal {
  font-size: 0.88rem;
  color: var(--clr-text-muted);
  font-style: italic;
}

.pub-card__title {
  font-size: 1.1rem;
  font-family: var(--font-serif);
  font-weight: 600;
  margin-bottom: 0.35rem;
  color: var(--clr-text);
}

.pub-card__authors {
  font-size: 0.9rem;
  color: var(--clr-text-muted);
  margin-bottom: 0.75rem;
}

.pub-card__abstract {
  font-size: 0.95rem;
  color: var(--clr-text-muted);
  line-height: 1.65;
  margin-bottom: 1rem;
}

.pub-card__actions {
  display: flex;
  gap: 0.65rem;
  flex-wrap: wrap;
}

/* ===========================================
   CV
   =========================================== */
.cv { background: var(--clr-surface-2); }
[data-theme="dark"] .cv { background: var(--clr-surface); }

.cv .section__heading { margin-bottom: 2.5rem; }

.cv__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  align-items: start;
}

.cv__block {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-sm);
}

[data-theme="dark"] .cv__block {
  background: var(--clr-surface-2);
}

.cv__block-title {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clr-teal);
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--clr-border);
}

.cv__timeline { display: flex; flex-direction: column; gap: 1.4rem; }

.cv__entry {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 0.75rem;
  align-items: start;
}

.cv__entry-date {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--clr-teal);
  padding-top: 0.1rem;
  font-family: var(--font-sans);
  line-height: 1.4;
}

.cv__entry-body {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.cv__entry-body strong {
  font-family: var(--font-sans);
  font-size: 0.975rem;
  font-weight: 600;
  color: var(--clr-text);
  line-height: 1.4;
}

.cv__entry-body span {
  font-size: 0.875rem;
  color: var(--clr-text-muted);
  line-height: 1.5;
}

.cv__entry-note {
  font-size: 0.82rem !important;
  color: var(--clr-text-muted);
  line-height: 1.55;
  margin-top: 0.15rem;
}

.cv__entry--award .cv__entry-date { color: var(--clr-gold); }
.cv__entry--award strong { color: var(--clr-text); }

.cv__placeholder {
  font-size: 0.875rem;
  color: var(--clr-text-muted);
}

/* Skills grid */
.cv__skills { display: flex; flex-direction: column; gap: 1rem; }

.cv__skill-group { display: flex; flex-direction: column; gap: 0.5rem; }

.cv__skill-label {
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--clr-text-muted);
}

.cv__skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.cv__download {
  margin-top: 2.5rem;
  display: flex;
  justify-content: center;
}

/* ===========================================
   CONTACT
   =========================================== */
.contact__inner {
  max-width: 640px;
  margin-inline: auto;
  text-align: center;
}

.contact__inner .section__heading::after {
  margin-inline: auto;
}

.contact__tagline {
  font-size: 1.05rem;
  color: var(--clr-text-muted);
  line-height: 1.7;
  margin-bottom: 2.5rem;
}

.contact__links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
}

.contact-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.8rem 1.5rem;
  border-radius: 999px;
  border: 1px solid var(--clr-border);
  background: var(--clr-surface);
  color: var(--clr-text);
  font-weight: 500;
  font-size: 0.95rem;
  box-shadow: var(--shadow-sm);
  transition: background var(--transition), border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.contact-btn:hover, .contact-btn:focus-visible {
  background: var(--clr-teal-dim);
  border-color: rgba(0,191,166,0.3);
  color: var(--clr-teal);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* ===========================================
   FOOTER
   =========================================== */
.footer {
  background: var(--clr-navy);
  padding-block: 2.5rem;
}

.footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  text-align: center;
}

.footer__copy {
  font-size: 0.88rem;
  color: rgba(245,245,240,0.55);
  margin: 0;
}

.footer__quip {
  font-size: 0.82rem;
  color: rgba(245,245,240,0.35);
  font-style: italic;
  margin: 0;
}

/* ===========================================
   SCROLL ANIMATIONS
   =========================================== */
.fade-in {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* stagger children */
.fade-in:nth-child(2) { transition-delay: 0.08s; }
.fade-in:nth-child(3) { transition-delay: 0.16s; }
.fade-in:nth-child(4) { transition-delay: 0.24s; }

/* ===========================================
   BLOG POST PAGE
   =========================================== */
.post-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  background: var(--clr-nav-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--clr-border);
}

.post-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.post-nav__back {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--clr-text-muted);
  transition: color var(--transition), gap 0.18s ease;
}

.post-nav__back:hover {
  color: var(--clr-teal);
  gap: 0.7rem;
}

.post-nav__back svg { flex-shrink: 0; }

.post-hero {
  background: var(--clr-navy);
  padding: 5rem 0 4rem;
}

.post-hero__label {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--clr-teal);
  margin-bottom: 1rem;
}

.post-hero__title {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3.5vw, 2.75rem);
  font-weight: 700;
  color: #ffffff;
  max-width: 760px;
  line-height: 1.2;
  margin-bottom: 1.25rem;
}

.post-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
}

.post-hero__date,
.post-hero__author {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.55);
}

.post-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.post-hero__tags .tag {
  background: rgba(0,191,166,0.18);
  color: rgba(0,255,220,0.8);
}

/* Article body */
.post-body {
  padding-block: 4rem 6rem;
}

.post-body__inner {
  max-width: 760px;
  margin-inline: auto;
}

.post-body h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.35rem, 2.2vw, 1.7rem);
  font-weight: 700;
  color: var(--clr-text);
  margin-top: 3rem;
  margin-bottom: 1rem;
  padding-left: 1rem;
  border-left: 3px solid var(--clr-teal);
}

.post-body h3 {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--clr-text);
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

.post-body p {
  color: var(--clr-text);
  line-height: 1.82;
  font-size: 1.04rem;
  margin-bottom: 1.25rem;
}

.post-body ul, .post-body ol {
  color: var(--clr-text);
  line-height: 1.75;
  font-size: 1.04rem;
  margin-bottom: 1.25rem;
  padding-left: 1.5rem;
}

.post-body li { margin-bottom: 0.5rem; }

.post-body strong { color: var(--clr-text); font-weight: 600; }

.post-body em { font-style: italic; }

.post-body code {
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.88em;
  background: var(--clr-teal-dim);
  color: var(--clr-teal);
  padding: 0.15em 0.4em;
  border-radius: 4px;
}

/* Callout / definition box */
.callout {
  background: var(--clr-teal-dim);
  border-left: 3px solid var(--clr-teal);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
  font-size: 0.95rem;
  color: var(--clr-text);
  line-height: 1.65;
}

.callout strong { color: var(--clr-teal); }

/* Equation display */
.eq {
  display: block;
  font-family: 'Courier New', Courier, monospace;
  font-size: 1rem;
  background: var(--clr-surface-2);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 1rem 1.5rem;
  margin: 1.5rem 0;
  overflow-x: auto;
  white-space: nowrap;
  color: var(--clr-text);
}

/* FBA diagram wrapper */
.diagram-wrap {
  margin: 2rem 0;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.diagram-wrap figcaption {
  font-size: 0.85rem;
  color: var(--clr-text-muted);
  margin-top: 1rem;
  line-height: 1.6;
  font-style: italic;
}

/* Pipeline steps */
.pipeline-step {
  background: var(--clr-surface-2);
  border: 1px solid var(--clr-border);
  border-left: 4px solid var(--clr-teal);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 1.25rem 1.5rem;
  margin: 1rem 0;
}

.pipeline-step__label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clr-teal);
  margin-bottom: 0.4rem;
}

.pipeline-step h4 {
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  color: var(--clr-text);
  margin-bottom: 0.5rem;
}

.pipeline-step p { font-size: 0.95rem; color: var(--clr-text-muted); margin: 0; }

/* References */
.references {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--clr-border);
}

.references h2 { border-left: 3px solid var(--clr-gold) !important; }

.ref-list {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.ref-list li {
  font-size: 0.9rem;
  color: var(--clr-text-muted);
  line-height: 1.65;
  padding-left: 1.75rem;
  position: relative;
  margin: 0;
}

.ref-list li::before {
  content: attr(data-n);
  position: absolute;
  left: 0;
  color: var(--clr-teal);
  font-weight: 600;
  font-size: 0.82rem;
}

/* Post header figure */
.post-figure {
  margin: 0 0 2.5rem;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--clr-border);
  line-height: 0;
}

.post-figure img,
.post-figure svg {
  width: 100%;
  height: auto;
  display: block;
}

/* Inline citation markers */
.ref {
  font-size: 0.82em;
  color: var(--clr-text-muted);
  font-style: normal;
}

/* ===========================================
   RESPONSIVE
   =========================================== */
@media (max-width: 960px) {
  .about__grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .about__photo-wrap {
    position: static;
    max-width: 280px;
  }

  .cv__grid {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .blog-card--pinned {
    flex-direction: column;
    gap: 0;
  }
}

@media (max-width: 580px) {
  .hero__lower {
    flex-direction: column;
    text-align: center;
    gap: 1.25rem;
  }
  .hero__lower-logo { flex: none; }
  .hero__big-logo { max-width: 150px; }
}

@media (max-width: 720px) {
  .nav__links { display: none; }

  .nav__hamburger { display: flex; }

  .nav__links.nav-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--nav-h);
    left: 0;
    right: 0;
    background: var(--clr-nav-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--clr-border);
    padding: 1rem 1.25rem 1.5rem;
    gap: 0.25rem;
    z-index: 99;
  }

  .nav__links.nav-open .nav__link {
    padding: 0.7rem 1rem;
    border-radius: var(--radius-md);
    font-size: 1rem;
  }

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

  .blog-card--pinned { grid-column: 1; }

  .cv__entry { grid-template-columns: 1fr; gap: 0.25rem; }
  .cv__entry-date { font-size: 0.75rem; }
}

@media (max-width: 720px) {
  .hero__content { padding: 1.75rem 1.75rem; }
}

@media (max-width: 480px) {
  .hero__name { font-size: clamp(2.5rem, 12vw, 3.5rem); }
  .hero__ctas { flex-direction: column; }
  .hero__ctas .btn { text-align: center; justify-content: center; }
  .hero__content { padding: 1.5rem 1.25rem; }
}

/* ===========================================
   FEATURED CARD (homepage)
   =========================================== */
.blog-card--featured {
  grid-column: 1 / -1;
  border-left: 4px solid var(--clr-teal);
}

.blog-card--featured .blog-card__title {
  font-size: clamp(1.1rem, 2vw, 1.45rem);
}

.blog-card__featured-label {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: var(--clr-teal-dim);
  color: var(--clr-teal);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  margin-bottom: 1rem;
  font-family: var(--font-sans);
  flex-shrink: 0;
}

/* "View All Posts" link below homepage grid */
.blog-grid__footer {
  text-align: center;
  margin-top: 2.5rem;
}

/* ===========================================
   WORKS PAGE (blog/index.html)
   =========================================== */
.works-hero {
  background: var(--clr-navy);
  padding: 5rem 0 4rem;
}

.works-hero__label {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--clr-teal);
  margin-bottom: 1rem;
}

.works-hero__title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 0.75rem;
}

.works-hero__sub {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.60);
  max-width: 540px;
}

.works-grid-section { background: var(--clr-surface-2); }
[data-theme="dark"] .works-grid-section { background: var(--clr-surface); }

/* ===========================================
   POST HERO — back link
   =========================================== */
.post-hero__back {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.50);
  margin-bottom: 1.5rem;
  transition: color 0.18s ease;
}

.post-hero__back:hover { color: var(--clr-teal); }

.post-hero__reading-time {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.45);
}

/* ===========================================
   POST FOOTER NAVIGATION
   =========================================== */
.post-footer-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--clr-border);
  gap: 1rem;
  flex-wrap: wrap;
}

.post-footer-nav__back,
.post-footer-nav__next {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--clr-text-muted);
  transition: color var(--transition), gap 0.18s ease;
}

.post-footer-nav__back:hover,
.post-footer-nav__next:hover { color: var(--clr-teal); }

.post-footer-nav__next { margin-left: auto; }

/* ===========================================
   RESPONSIVE VIDEO EMBED
   =========================================== */
.video-wrap {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  border-radius: var(--radius-lg);
  margin: 2rem 0;
  background: #000;
}

.video-wrap iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.video-caption {
  text-align: center;
  font-size: 0.85rem;
  color: var(--clr-text-muted);
  margin-top: 0.75rem;
  font-style: italic;
}

@media (max-width: 720px) {
  .blog-card--featured { grid-column: 1; }
}

/* ===========================================
   PERSONAL PHOTO GALLERY — CAROUSEL
   =========================================== */
.gallery-strip {
  background: var(--clr-navy);
  padding: 2rem 0 1.75rem;
}

.gallery-strip__label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.35);
  text-align: center;
  padding-bottom: 1.25rem;
  font-family: var(--font-sans);
}

/* Outer wrapper: constrains the carousel width, leaves room for arrow buttons */
.gallery-strip__carousel {
  position: relative;
  max-width: 1050px;
  margin: 0 auto;
  padding: 0 3rem;
}

/* Clipping window — JS reads this width to calculate photo sizes */
.gallery-strip__viewport {
  overflow: hidden;
}

/* Flex row of all photos; JS sets transform to slide */
.gallery-strip__track {
  display: flex;
  transition: transform 0.42s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  will-change: transform;
}

/* JS sets width & height on each photo to make them equal squares */
.gallery-strip__photo {
  flex-shrink: 0;
  object-fit: cover;
  display: block;
  filter: brightness(0.88) saturate(0.88);
  transition: filter 0.25s ease;
}

.gallery-strip__photo:hover { filter: brightness(1) saturate(1); }

/* Prev / next buttons sit on the outer padding space */
.gallery-strip__btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(8, 18, 42, 0.78);
  border: 1px solid rgba(255,255,255,0.2);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.18s, border-color 0.18s;
  z-index: 2;
}

.gallery-strip__btn:hover {
  background: rgba(0,191,166,0.3);
  border-color: var(--clr-teal);
}

.gallery-strip__btn--prev { left: 0; }
.gallery-strip__btn--next { right: 0; }

/* Page indicator dots */
.gallery-strip__dots {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  padding-top: 1rem;
}

.gallery-strip__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: rgba(255,255,255,0.2);
  border: none;
  cursor: pointer;
  padding: 0;
  transition: background 0.2s;
}

.gallery-strip__dot--active { background: var(--clr-teal); }