:root {
  --navy: #0f172a;
  --navy-light: #16213a;
  --slate: #94a3b8;
  --light-slate: #cbd5e1;
  --lightest-slate: #e2e8f0;
  --white: #f8fafc;
  --accent: #5eead4;
  --accent-dim: rgba(94, 234, 212, 0.1);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, monospace;
  --sidebar-width: 380px;
  --transition: all 0.12s cubic-bezier(0.645, 0.045, 0.355, 1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background-color: var(--navy);
  color: var(--slate);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

.skip-to-content {
  position: absolute;
  top: -100px;
  left: 0;
  background: var(--accent);
  color: var(--navy);
  padding: 10px 18px;
  z-index: 999;
  transition: top 0.2s;
}
.skip-to-content:focus {
  top: 0;
}

.wrapper {
  display: flex;
  max-width: 1200px;
  margin: 0 auto;
  min-height: 100vh;
  position: relative;
  z-index: 1;
}

/* Soft radial glow that follows the cursor across the whole page */
.spotlight {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: radial-gradient(
    600px circle at var(--mouse-x, 50%) var(--mouse-y, 50%),
    rgba(94, 234, 212, 0.06),
    transparent 40%
  );
  transition: background 0.1s ease-out;
}

@media (max-width: 900px) {
  .spotlight {
    display: none;
  }
}

/* ---------- SIDEBAR ---------- */
.sidebar {
  width: var(--sidebar-width);
  flex-shrink: 0;
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 80px 40px;
  display: flex;
  align-items: flex-start;
}

.sidebar-inner {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 100%;
  max-height: 700px;
}

.intro h1 {
  margin: 0;
  font-size: clamp(2.2rem, 4vw, 2.8rem);
  font-weight: 800;
  color: var(--white);
  letter-spacing: -0.02em;
}

.intro h2 {
  margin: 6px 0 20px;
  font-size: clamp(1.1rem, 2vw, 1.3rem);
  font-weight: 600;
  color: var(--light-slate);
}

.intro .tagline {
  margin: 0;
  max-width: 300px;
  font-size: 0.95rem;
  color: var(--slate);
}

.side-nav ul {
  list-style: none;
  margin: 40px 0 0;
  padding: 0;
}

.side-nav li {
  margin-bottom: 8px;
}

.side-nav a {
  display: inline-flex;
  align-items: center;
  padding: 8px 0;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--slate);
  border-left: 2px solid transparent;
  padding-left: 14px;
  transition: var(--transition);
}

.side-nav a:hover,
.side-nav a:focus {
  color: var(--lightest-slate);
}

.side-nav a.active {
  color: var(--white);
  border-left-color: var(--accent);
}

.social-list {
  display: flex;
  gap: 6px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.social-list a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 6px;
  color: var(--slate);
  transition: var(--transition);
}

.social-list a:hover,
.social-list a:focus {
  color: var(--accent);
  background: var(--accent-dim);
  transform: translateY(-2px);
}

.social-list svg {
  width: 20px;
  height: 20px;
}

/* ---------- MAIN CONTENT ---------- */
main#content {
  flex: 1;
  padding: 80px 40px 40px 0;
  min-width: 0;
}

.section {
  margin-bottom: 96px;
  scroll-margin-top: 40px;
}

.section-heading {
  margin: 0 0 20px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--lightest-slate);
}

.mobile-only {
  display: none;
}

.about-text p {
  margin: 0 0 16px;
  max-width: 620px;
  color: var(--slate);
  font-size: 1rem;
}

/* ---------- HOVER CARD (shared by Experience, Projects, Publications) ---------- */
.job,
.project,
.publication {
  padding: 16px;
  margin: 0 -16px;
  border-radius: 8px;
  border: 1px solid transparent;
  transition: var(--transition);
}

.job:hover,
.job:focus-within,
.project:hover,
.project:focus-within,
.publication:hover,
.publication:focus-within {
  background-color: rgba(94, 234, 212, 0.05);
  border-color: rgba(94, 234, 212, 0.3);
  box-shadow: 0 6px 16px -10px rgba(94, 234, 212, 0.2);
}

/* Arrow glyph that nudges up-right on hover, next to external link headings */
.link-arrow {
  display: inline-block;
  transition: transform 0.25s ease;
}

a:hover .link-arrow,
a:focus .link-arrow {
  transform: translate(3px, -3px);
}

/* ---------- EXPERIENCE ---------- */
.job {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 20px;
}

.job-meta {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--slate);
  padding-top: 4px;
}

.job-body h4 {
  margin: 0 0 4px;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--lightest-slate);
}

.job-location {
  margin: 0 0 10px;
  font-size: 0.85rem;
  color: var(--slate);
  font-style: italic;
}

.job-body p {
  margin: 0 0 14px;
  max-width: 560px;
  font-size: 0.95rem;
}

/* ---------- PILLS ---------- */
.pill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.pill-list li {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--accent-dim);
  color: var(--accent);
}

.pill-list.large li {
  font-size: 0.8rem;
  padding: 6px 14px;
  border-radius: 999px;
}

/* ---------- PROJECTS ---------- */
.project-list {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.project {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 24px;
  align-items: start;
}

.project-thumb {
  border-radius: 6px;
  overflow: hidden;
  background: var(--navy-light);
  aspect-ratio: 16/10;
}

.project-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.project-body h4 {
  margin: 0 0 8px;
  font-size: 1.1rem;
  color: var(--lightest-slate);
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.project-body h4 a:hover,
.project-body h4 a:focus {
  color: var(--accent);
}

.badge {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  padding: 3px 8px;
  border-radius: 4px;
  background: rgba(148, 163, 184, 0.15);
  color: var(--slate);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.project-body p {
  margin: 0 0 14px;
  max-width: 480px;
  font-size: 0.92rem;
}

.project-links {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.project-links a {
  color: var(--light-slate);
}

.project-links a:hover,
.project-links a:focus {
  color: var(--accent);
}

.project-links span {
  margin: 0 8px;
  color: var(--slate);
}

/* ---------- PUBLICATIONS ---------- */
.publication h4 {
  margin: 0 0 6px;
  font-size: 1.05rem;
  color: var(--lightest-slate);
}

.publication h4 a:hover,
.publication h4 a:focus {
  color: var(--accent);
}

.pub-meta {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--slate);
  margin: 0 0 12px;
}

.publication p:last-child {
  max-width: 620px;
  margin: 0;
  font-size: 0.92rem;
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 900px) {
  .wrapper {
    flex-direction: column;
  }

  .sidebar {
    position: relative;
    width: 100%;
    height: auto;
    padding: 40px 25px 20px;
  }

  .sidebar-inner {
    max-height: none;
  }

  .side-nav {
    display: none;
  }

  main#content {
    max-width: 100%;
    padding: 20px 25px 40px;
  }

  .mobile-only {
    display: block;
  }

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

  .job {
    grid-template-columns: 1fr;
    gap: 6px;
  }
}