/* ==========================================================================
   Adrit Rao — minimal
   ========================================================================== */

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

:root {
  --bg: #fcfcfc;
  --text: #111111;
  --muted: #6b6b6b;
  --faint: #e5e5e5;
  --display: "Source Serif 4", Georgia, "Times New Roman", serif;
  --sans: "Instrument Sans", -apple-system, BlinkMacSystemFont, sans-serif;
  --width: 560px;
  --pad-x: 1.5rem;
  --ease: cubic-bezier(0.25, 0.1, 0.25, 1);
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 15px;
  font-weight: 400;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

::selection {
  background: #e8e8e8;
}

a {
  color: inherit;
  text-decoration: underline;
  text-decoration-color: var(--faint);
  text-underline-offset: 3px;
  transition: text-decoration-color 0.2s var(--ease), color 0.2s var(--ease);
}

a:hover {
  text-decoration-color: var(--text);
}

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

/* Nav */
.nav {
  padding-top: 2.25rem;
}

.nav__inner,
main,
footer {
  max-width: var(--width);
  width: 100%;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--pad-x);
  padding-right: var(--pad-x);
}

.nav__inner {
  display: flex;
  align-items: baseline;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.nav__links {
  display: flex;
  gap: 1.25rem;
  list-style: none;
  flex-wrap: wrap;
}

.nav__links a {
  font-size: 13px;
  color: var(--muted);
  text-decoration: none;
  letter-spacing: 0.01em;
  transition: color 0.2s var(--ease);
}

.nav__links a:hover,
.nav__links a.active {
  color: var(--text);
}

/* Main */
main {
  flex: 1;
  padding-top: 3.5rem;
  padding-bottom: 5rem;
}

main.home {
  padding-top: 3.75rem;
}

/* Hero */
.hero {
  margin-bottom: 0;
}

.hero__layout {
  display: flex;
  align-items: flex-start;
  gap: 2.25rem;
}

.hero__avatar {
  width: 132px;
  height: 168px;
  flex-shrink: 0;
  border-radius: 6px;
  object-fit: cover;
  object-position: center 8%;
  border: 1px solid var(--faint);
  margin-top: 0.15rem;
}

.hero__info {
  flex: 1;
  min-width: 0;
  padding-top: 0.1rem;
}

.hero__name {
  font-family: var(--display);
  font-size: 2rem;
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -0.008em;
  font-optical-sizing: auto;
  margin-bottom: 0.4rem;
}

.hero__tagline {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.55;
  max-width: 22rem;
}

.hero__links {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1.375rem;
}

.hero__links a {
  color: var(--muted);
  text-decoration: none;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 1.875rem;
  height: 1.875rem;
  transition: color 0.2s var(--ease);
}

.hero__links a:hover {
  color: var(--text);
}

.hero__links svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

/* Content */
.content {
  margin-top: 2.75rem;
  padding-top: 2.75rem;
  border-top: 1px solid var(--faint);
}

.content p {
  margin-bottom: 1.25rem;
  color: var(--text);
  overflow-wrap: anywhere;
}

.content p:last-child {
  margin-bottom: 0;
}

.highlights {
  margin-top: 2.5rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--faint);
}

.highlights dl {
  display: grid;
  gap: 1.75rem;
}

.highlights dt {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.3rem;
}

.highlights dd {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.65;
}

.page-title {
  font-family: var(--sans);
  font-size: 1.375rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  line-height: 1.3;
  margin-bottom: 2rem;
}

.page-intro {
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 2rem;
  margin-top: -1rem;
}

/* Lists */
.list {
  list-style: none;
}

.list li {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--faint);
  font-size: 14px;
  line-height: 1.65;
  color: var(--muted);
}

.list li a {
  text-decoration: none;
  color: var(--text);
}

.list li a:hover {
  text-decoration: underline;
  text-decoration-color: var(--faint);
}

.list li strong {
  font-weight: 500;
  color: var(--text);
  margin-right: 0.35rem;
}

/* Publications */
.pub-list {
  list-style: none;
}

.pub-item {
  padding: 1rem 0;
  border-bottom: 1px solid var(--faint);
}

.pub-item h3 {
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 400;
  line-height: 1.55;
  color: var(--text);
  margin-bottom: 0.15rem;
}

.pub-item h3 a {
  color: var(--text);
  text-decoration: none;
}

.pub-item h3 a:hover {
  text-decoration: underline;
  text-decoration-color: var(--faint);
}

/* Video grid */
.video-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
  margin-top: 1rem;
}

.video-grid a {
  text-decoration: none;
  opacity: 0.92;
  transition: opacity 0.2s var(--ease);
}

.video-grid a:hover {
  opacity: 1;
}

.video-grid img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 3px;
  border: 1px solid var(--faint);
}

/* Footer */
footer {
  padding-top: 2rem;
  padding-bottom: 2.5rem;
  font-size: 12px;
  color: var(--muted);
  border-top: 1px solid var(--faint);
}

/* Animations */
.fade-in {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}

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

/* Responsive */
@media (max-width: 600px) {
  :root {
    --pad-x: 1.25rem;
  }

  .nav {
    padding-top: 1.75rem;
  }

  .hero__layout {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.25rem;
  }

  .hero__name {
    font-size: 1.875rem;
  }

  .hero__avatar {
    width: 112px;
    height: 142px;
  }

  main {
    padding-top: 2.25rem;
    padding-bottom: 4rem;
  }

  main.home {
    padding-top: 2.25rem;
  }

  .content {
    margin-top: 2rem;
    padding-top: 2rem;
  }

  .page-title {
    font-size: 1.25rem;
  }

  .nav__links {
    gap: 1rem;
  }
}