/* ═══════════════════════════════════════════════════════
   MAIN.CSS — Dark Academic Portfolio
   Inspired by pyannote.ai aesthetic
   ═══════════════════════════════════════════════════════ */

/* ─── Custom Properties ─── */
:root {
  /* Backgrounds — layered navy blues */
  --color-bg:           #0b1120;
  --color-bg-mid:       #0f1a2e;
  --color-bg-card:      #132040;
  --color-bg-card-hover:#162448;
  --color-bg-nav:       rgba(11, 17, 32, 0.85);

  /* Borders */
  --color-border:       rgba(99, 143, 217, 0.15);
  --color-border-hover: rgba(99, 143, 217, 0.35);

  /* Text */
  --color-text:         #e8edf5;
  --color-text-muted:   #7b93bb;
  --color-text-faint:   #4a6080;

  /* Accent — academic gold */
  --color-accent:       #c9a84c;
  --color-accent-hover: #e0be70;
  --color-accent-glow:  rgba(201, 168, 76, 0.12);

  /* Links */
  --color-link:         #7eb8f7;
  --color-link-hover:   #a8d0ff;

  --font-display:    'Playfair Display', Georgia, serif;
  --font-body:       'Source Sans 3', 'Source Sans Pro', sans-serif;

  --section-pad:     120px;
  --max-w:           1100px;
  --radius:          12px;
  --radius-sm:       6px;
  --transition:      0.25s ease;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
}

/* Subtle background texture */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background: radial-gradient(ellipse at 50% 30%, rgba(30, 60, 120, 0.08) 0%, transparent 70%);
  pointer-events: none;
  z-index: -1;
}

a {
  color: var(--color-link);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover { color: var(--color-link-hover); }

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

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
}

ul { list-style: none; }

/* ─── Utility ─── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  border: 1px solid transparent;
  text-decoration: none;
  white-space: nowrap;
}
.btn--solid {
  background: var(--color-accent);
  color: #0b1120;
  border-color: var(--color-accent);
}
.btn--solid:hover {
  background: var(--color-accent-hover);
  color: #0b1120;
  border-color: var(--color-accent-hover);
}
.btn--ghost {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}
.btn--ghost:hover {
  border-color: var(--color-accent);
  color: var(--color-accent-hover);
}
.btn--block { width: 100%; justify-content: center; }

/* ═══════════════════════ NAVIGATION ═══════════════════════ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: var(--color-bg-nav);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition);
}

.nav__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.3rem;
  color: var(--color-text);
  letter-spacing: 0.04em;
  text-decoration: none;
}
.nav__logo:hover { color: var(--color-accent); }

.nav__links {
  display: flex;
  gap: 32px;
  align-items: center;
}

.nav__link {
  position: relative;
  color: var(--color-text-muted);
  font-size: 0.88rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-decoration: none;
  padding: 4px 0;
}
.nav__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width 0.3s ease;
}
.nav__link:hover {
  color: var(--color-text);
}
.nav__link:hover::after {
  width: 100%;
}
.nav__link--active {
  color: var(--color-accent);
}
.nav__link--active::after {
  width: 100%;
  background: var(--color-accent);
}

/* Hamburger */
.nav__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 1001;
}
.nav__hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all 0.3s ease;
}
.nav__hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.nav__hamburger.active span:nth-child(2) {
  opacity: 0;
}
.nav__hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ═══════════════════════ HERO ═══════════════════════ */
.hero {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 120px 24px 80px;
  overflow: hidden;
  background-image: radial-gradient(circle, rgba(224, 190, 112, 0.12) 1px, transparent 1px);
  background-size: 28px 28px;
}

.hero__glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 50% -10%, rgba(30, 60, 120, 0.5) 0%, transparent 70%);
  pointer-events: none;
}

/* Hero grid: text left, photo right on desktop */
.hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4rem;
  align-items: center;
  max-width: var(--max-w);
  width: 100%;
}

.hero__content {
  position: relative;
}

.hero__content > * {
  opacity: 0;
  animation: fadeInUp 0.8s ease forwards;
}
.hero__content > *:nth-child(1) { animation-delay: 0.1s; }
.hero__content > *:nth-child(2) { animation-delay: 0.2s; }
.hero__content > *:nth-child(3) { animation-delay: 0.3s; }
.hero__content > *:nth-child(4) { animation-delay: 0.4s; }
.hero__content > *:nth-child(5) { animation-delay: 0.55s; }

/* Hero photo */
.hero__photo-wrapper {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  opacity: 0;
  animation: fadeInUp 0.8s ease 0.3s forwards;
}

.hero__photo-wrapper::before {
  content: '';
  position: absolute;
  width: 110%;
  height: 110%;
  border-radius: 50%;
  background: radial-gradient(circle, var(--color-accent-glow) 0%, transparent 70%);
  z-index: 0;
}

.hero__photo {
  width: clamp(180px, 28vw, 320px);
  height: clamp(180px, 28vw, 320px);
  border-radius: 50%;
  object-fit: cover;
  object-position: center top;
  border: 2px solid var(--color-accent);
  box-shadow:
    0 0 0 6px rgba(201, 168, 76, 0.08),
    0 20px 60px rgba(0, 0, 0, 0.5);
  position: relative;
  z-index: 1;
  transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.hero__photo:hover {
  transform: scale(1.03);
  box-shadow:
    0 0 0 8px rgba(201, 168, 76, 0.14),
    0 24px 70px rgba(0, 0, 0, 0.6);
}

.hero__name {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(2.6rem, 5.5vw, 4.2rem);
  letter-spacing: 0.04em;
  color: var(--color-text);
  margin-bottom: 0.3rem;
  text-shadow: 0 2px 20px rgba(99, 143, 217, 0.15);
}

.hero__title {
  font-family: var(--font-body);
  font-size: clamp(0.95rem, 2vw, 1.15rem);
  font-weight: 400;
  color: var(--color-text-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 1.4rem;
}

.hero__tagline {
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 0 36px;
  line-height: 1.6;
}

.hero__cta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

/* Hero Social Buttons */
.hero__social {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 18px;
  opacity: 0;
  animation: fadeInUp 0.8s ease 0.65s forwards;
}

.hero__social-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--color-text-muted);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  text-decoration: none;
  transition: all var(--transition);
}

.hero__social-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(201, 168, 76, 0.1);
}

.hero__social-btn svg {
  flex-shrink: 0;
}

.hero__social-btn span {
  line-height: 1;
}

/* ═══════════════════════ SECTIONS ═══════════════════════ */
.section {
  padding: var(--section-pad) 24px;
}

/* Alternating section backgrounds */
.section:nth-of-type(even) {
  background: var(--color-bg-mid);
}

.section__inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.section__label {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-accent);
  margin-bottom: 16px;
}

.section__heading {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 16px;
}

.section__subtitle {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  max-width: 680px;
  margin-bottom: 48px;
  line-height: 1.6;
}

/* ═══════════════════════ ABOUT ═══════════════════════ */
.about {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 48px;
  align-items: start;
}

.about__text p {
  margin-bottom: 20px;
  color: var(--color-text);
  opacity: 0.88;
}

.about__text h3 {
  font-size: 1.2rem;
  margin: 32px 0 16px;
  color: var(--color-text);
}

.about__text ul {
  list-style: disc;
  padding-left: 20px;
  margin-bottom: 16px;
}
.about__text ul li {
  margin-bottom: 8px;
  color: var(--color-text);
  opacity: 0.82;
  font-size: 0.95rem;
}

/* Education */
.education__item {
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border);
}
.education__item:last-child { border-bottom: none; }

.education__degree {
  display: block;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-text);
}
.education__meta {
  display: block;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: 2px;
}
.education__detail {
  display: block;
  font-size: 0.82rem;
  color: var(--color-text-faint);
  margin-top: 2px;
}

/* About photo */
.about-photo {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  object-fit: cover;
  object-position: center top;
  border: 1.5px solid var(--color-border);
  margin-bottom: 1.2rem;
}

/* Aside Card */
.aside-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px;
  margin-bottom: 20px;
}

.aside-card__row {
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border);
}
.aside-card__row:last-child { border-bottom: none; }

.aside-card__label {
  display: block;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-accent);
  margin-bottom: 4px;
}
.aside-card__value {
  font-size: 0.92rem;
  color: var(--color-text);
  opacity: 0.88;
  line-height: 1.5;
}

/* ═══════════════════════ RESEARCH ═══════════════════════ */
.research-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-bottom: 40px;
}

.research-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px;
  transition: transform var(--transition), box-shadow var(--transition);
}
.research-card:hover {
  transform: translateY(-4px);
  background: var(--color-bg-card-hover);
  border-color: var(--color-border-hover);
  box-shadow: 0 12px 40px rgba(30, 60, 120, 0.2);
}

.research-card__icon {
  color: var(--color-accent);
  margin-bottom: 16px;
}

.research-card__title {
  font-size: 1.1rem;
  margin-bottom: 12px;
}

.research-card__desc {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.research-statement {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-accent);
  border-radius: var(--radius);
  padding: 32px;
}
.research-statement h3 {
  font-size: 1.1rem;
  margin-bottom: 12px;
}
.research-statement p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ═══════════════════════ PUBLICATIONS ═══════════════════════ */
.pub-year {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.6rem;
  color: var(--color-accent);
  margin-bottom: 20px;
  margin-top: 16px;
}
.pub-year:first-of-type { margin-top: 0; }

.pub {
  padding: 28px 0;
  border-bottom: 1px solid var(--color-border);
}
.pub:last-of-type { border-bottom: none; }

.pub__title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.35;
}

.pub__authors {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: 4px;
}

.pub__highlight {
  color: var(--color-accent);
  font-weight: 600;
}

.pub__venue {
  font-size: 0.88rem;
  color: var(--color-link);
  margin-bottom: 10px;
}

.pub__abstract {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 12px;
}

.pub__links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  align-items: center;
}
.pub__links a {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-accent);
  transition: color var(--transition);
}
.pub__links a:hover { color: var(--color-accent-hover); }

.pub__status {
  font-size: 0.82rem;
  color: var(--color-text-faint);
  font-style: italic;
}

.pub-profiles {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-top: 40px;
}

/* ═══════════════════════ PROJECTS ═══════════════════════ */
.project-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.project-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition), box-shadow var(--transition);
}
.project-card:hover {
  transform: translateY(-4px);
  background: var(--color-bg-card-hover);
  border-color: var(--color-border-hover);
  box-shadow: 0 12px 40px rgba(30, 60, 120, 0.2);
}

.project-card__title {
  font-size: 1.05rem;
  margin-bottom: 8px;
  line-height: 1.3;
}

.project-card__meta {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: 14px;
}

.project-card__desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 18px;
  flex: 1;
}

.project-card__tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  border: 1px solid rgba(201, 168, 76, 0.25);
  border-radius: 4px;
  padding: 3px 10px;
  background: rgba(201, 168, 76, 0.1);
}

.project-card__links {
  display: flex;
  gap: 16px;
}
.project-card__links a {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-accent);
}
.project-card__links a:hover { color: var(--color-accent-hover); }

/* Clickable project cards */
.project-card--clickable {
  position: relative;
  cursor: pointer;
}

.project-card__overlay-link {
  color: inherit;
  text-decoration: none;
}
.project-card__overlay-link:hover {
  color: inherit;
}

.project-card__overlay-link::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
}

.project-card--clickable .project-card__links {
  position: relative;
  z-index: 2;
}

.project-card--clickable .project-card__links a {
  position: relative;
  z-index: 2;
}

/* ═══════════════════════ CONTACT ═══════════════════════ */
.contact-links {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 8px;
}

.contact-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 24px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  color: var(--color-text-muted);
  transition: all var(--transition);
}
.contact-link:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-2px);
}
.contact-link svg {
  flex-shrink: 0;
}
.contact-link__text {
  font-size: 0.9rem;
  font-weight: 500;
}

/* ═══════════════════════ FOOTER ═══════════════════════ */
.footer {
  border-top: 1px solid var(--color-border);
  padding: 40px 24px;
  text-align: center;
}
.footer__inner {
  max-width: var(--max-w);
  margin: 0 auto;
}
.footer p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 4px;
}
.footer__note {
  font-size: 0.78rem !important;
  color: var(--color-text-faint) !important;
}

/* ═══════════════════════ SUBPAGE CONTENT ═══════════════════════ */

/* Subpage wrapper — applied by default layout */
.page-content {
  max-width: 860px;
  margin: 0 auto;
  padding: 120px 2rem 80px;
  color: var(--color-text);
}

.page-subtitle {
  font-family: var(--font-body);
  font-size: 1.05rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 2.5rem;
}

/* Subpage headings */
.page-content h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 0.4rem;
  line-height: 1.15;
}

.page-content h2,
.page-content h3 {
  font-family: var(--font-display);
  color: var(--color-text);
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
}

.page-content h2 {
  font-size: 1.4rem;
  font-weight: 700;
}

.page-content h3 {
  font-size: 1.15rem;
  font-weight: 700;
}

/* Body paragraphs */
.page-content p {
  font-family: var(--font-body);
  color: var(--color-text-muted);
  line-height: 1.75;
  margin-bottom: 1.2rem;
}

/* Links in content */
.page-content a {
  color: var(--color-link);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.page-content a:hover {
  color: var(--color-link-hover);
}

/* Code blocks / pre */
.page-content pre {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 1.2rem 1.4rem;
  overflow-x: auto;
  font-size: 0.88rem;
  margin-bottom: 1.5rem;
}

/* Inline code */
.page-content code {
  background: var(--color-bg-card);
  color: var(--color-accent);
  padding: 0.15em 0.4em;
  border-radius: 4px;
  font-size: 0.88em;
}

.page-content pre code {
  background: none;
  padding: 0;
  border-radius: 0;
  font-size: inherit;
  color: var(--color-text);
}

/* Images */
.page-content img {
  max-width: 100%;
  border-radius: 10px;
  border: 1px solid var(--color-border);
  margin: 1.5rem 0;
}

/* Lists */
.page-content ul,
.page-content ol {
  color: var(--color-text-muted);
  line-height: 1.75;
  margin-bottom: 1.2rem;
  padding-left: 1.5rem;
}

.page-content li {
  margin-bottom: 0.4rem;
}

/* Breadcrumb / back link */
.page-breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-body);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  text-decoration: none;
  margin-bottom: 2rem;
  transition: color 0.2s;
}
.page-breadcrumb:hover {
  color: var(--color-accent);
  text-decoration: none;
}
.page-breadcrumb::before {
  content: '\2190';
  font-size: 1em;
}

/* Project detail page */
.project-detail,
.publication-detail {
  margin-top: 0.5rem;
}

.project-header,
.publication-header {
  margin-bottom: 2rem;
}

.project-meta {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  margin-bottom: 0.3rem;
}

.project-meta strong {
  color: var(--color-text);
}

.publication-authors {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin-bottom: 0.3rem;
}

.publication-venue {
  color: var(--color-link);
  font-size: 0.92rem;
}

/* Technology pill tags (project pages) */
.tag--pill {
  border-radius: 999px;
  padding: 0.2em 0.75em;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 1.5rem;
}

/* Project content sections — ALL-CAPS labels for major sections */
.project-content h2 {
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-accent);
  margin-top: 3rem;
  margin-bottom: 1rem;
}

.project-content h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text);
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

.project-technologies {
  margin-bottom: 2rem;
}

.project-links,
.publication-links {
  margin-top: 2.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.project-links h3,
.publication-links h3,
.project-collaborators h3,
.publication-citation h3,
.publication-tags h3 {
  width: 100%;
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
}

.project-collaborators {
  margin-top: 2rem;
}

.project-collaborators ul {
  list-style: none;
  padding: 0;
}

.project-collaborators li {
  color: var(--color-text-muted);
  margin-bottom: 0.4rem;
  font-size: 0.92rem;
}

/* Figures in project pages */
.page-content figure {
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 1rem;
  background: var(--color-bg-card);
  margin: 1.5rem 0;
}

.page-content figure img {
  border: none;
  margin: 0;
  border-radius: 6px;
}

.page-content figcaption {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  text-align: center;
  margin-top: 0.75rem;
}

/* Publication citation block */
.publication-citation {
  margin-top: 2.5rem;
}

.publication-citation pre {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 1.2rem 1.4rem;
  overflow-x: auto;
  font-size: 0.82rem;
}

/* ═══════════════════════ ANIMATIONS ═══════════════════════ */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger reveals within grids */
.research-grid .reveal:nth-child(1) { transition-delay: 0s; }
.research-grid .reveal:nth-child(2) { transition-delay: 0.08s; }
.research-grid .reveal:nth-child(3) { transition-delay: 0.16s; }
.research-grid .reveal:nth-child(4) { transition-delay: 0.24s; }

.project-grid .reveal:nth-child(1) { transition-delay: 0s; }
.project-grid .reveal:nth-child(2) { transition-delay: 0.08s; }
.project-grid .reveal:nth-child(3) { transition-delay: 0.16s; }
.project-grid .reveal:nth-child(4) { transition-delay: 0.24s; }

/* ═══════════════════════ RESPONSIVE ═══════════════════════ */

/* Tablet */
@media (max-width: 768px) {
  :root {
    --section-pad: 80px;
  }

  .nav__links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: rgba(11, 17, 32, 0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    justify-content: center;
    gap: 28px;
    padding: 40px;
    transition: right 0.35s ease;
    border-left: 1px solid var(--color-border);
  }
  .nav__links.open {
    right: 0;
  }

  .nav__hamburger {
    display: flex;
  }

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

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

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

  .hero__inner {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero__photo-wrapper {
    order: -1;
    margin-bottom: 2rem;
  }
  .hero__photo {
    width: 140px;
    height: 140px;
  }
  .hero__cta {
    justify-content: center;
  }
  .hero__social {
    justify-content: center;
  }
  .hero__tagline {
    margin-left: auto;
    margin-right: auto;
  }

  .contact-links {
    flex-direction: column;
    align-items: center;
  }

  .pub-profiles {
    flex-direction: column;
    align-items: center;
  }

  .page-content {
    padding: 100px 1.5rem 60px;
  }
}

/* Small Mobile */
@media (max-width: 480px) {
  :root {
    --section-pad: 64px;
  }

  .hero {
    padding: 100px 20px 60px;
  }

  .hero__cta {
    flex-direction: column;
    align-items: center;
  }

  .hero__social {
    flex-direction: column;
    align-items: center;
  }

  .hero__social-btn {
    width: 100%;
    max-width: 220px;
    justify-content: center;
  }

  .section {
    padding-left: 20px;
    padding-right: 20px;
  }

  .aside-card {
    padding: 20px;
  }

  .research-card {
    padding: 24px;
  }

  .project-card {
    padding: 24px;
  }

  .contact-link {
    width: 100%;
    justify-content: center;
  }

  .page-content {
    padding: 90px 1.2rem 50px;
  }
}

/* Large Desktop */
@media (min-width: 1200px) {
  .hero__name {
    font-size: 4.2rem;
  }
}

/* ═══════════════════════ CV PAGE ═══════════════════════ */

/* Wide layout variant — removes max-width so full-width children work */
.page-content--wide {
  max-width: none;
  padding-left: 0;
  padding-right: 0;
}

/* Re-constrain the page title/subtitle inside wide layouts */
.page-content--wide .page-content__header {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 2rem 2rem;
}

.cv-embed {
  width: 100%;
  padding: 0 2rem 3rem;
  box-sizing: border-box;
}

.cv-embed .cv-actions {
  max-width: 860px;
  margin: 0 auto 1.5rem;
}

.cv-iframe {
  display: block;
  width: 100%;
  height: 88vh;
  min-height: 600px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: #fff;
}

/* ═══════════════════════ INFERENCE RESULTS (project pages) ═══════════════════════ */

.results-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1rem;
  margin: 1.5rem 0 2rem;
}

.results-stat {
  background: var(--color-surface, rgba(255,255,255,0.04));
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 1rem 1.25rem;
  text-align: center;
}

.results-stat__value {
  display: block;
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.1;
}

.results-stat__label {
  display: block;
  font-size: 0.78rem;
  color: var(--color-text-muted);
  margin-top: 0.3rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.inference-cards {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin: 1.25rem 0 2rem;
}

.inference-card {
  background: var(--color-surface, rgba(255,255,255,0.03));
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-link);
  border-radius: 8px;
  padding: 1rem 1.25rem;
}

.inference-card__header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 0.75rem;
}

.inference-card__id {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.85rem;
  background: var(--color-link);
  color: #fff;
  padding: 0.15em 0.6em;
  border-radius: 4px;
  letter-spacing: 0.02em;
}

.inference-card__meta {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.inference-card__system {
  font-size: 0.78rem;
  color: var(--color-text-faint, var(--color-text-muted));
  font-style: italic;
}

.inference-card__prompt {
  font-size: 0.9rem;
  color: var(--color-text);
  margin-bottom: 0.5rem;
}

.inference-card__response {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  line-height: 1.65;
  margin: 0;
  padding-left: 0.75rem;
  border-left: 2px solid var(--color-border);
}

/* Constrained content below the full-width PDF viewer */
.cv-overview {
  max-width: 860px;
  margin: 0 auto;
  padding: 2rem 2rem 3rem;
}