/* Homepage-only scenery and dark layout. The light theme is untouched. */
.observatory { display: none; }

:root[data-theme="modern"] .observatory-page {
  --page-width: 1520px;
  background: var(--bg-primary);
}

:root[data-theme="modern"] .observatory {
  display: block;
  position: fixed;
  inset: 0;
  height: 100vh;
  height: 100svh;
  overflow: hidden;
  z-index: -2;
  pointer-events: none;
  background: transparent;
}

.observatory canvas {
  display: block;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 1.1s ease;
}
.observatory.is-ready canvas { opacity: 1; }

/* A static orbital composition is also available before WebGL loads. */
.observatory-fallback {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 77% 43%, rgba(135, 126, 255, 0.23), transparent 30%),
    radial-gradient(ellipse at 76% 80%, rgba(70, 141, 230, 0.18), transparent 32%),
    radial-gradient(1px 1px at 65% 15%, #b6b9f1, transparent),
    radial-gradient(1px 1px at 91% 29%, #b6b9f1, transparent),
    radial-gradient(1px 1px at 83% 9%, #b6b9f1, transparent);
  transition: opacity 1.1s ease;
}
.observatory-fallback::before,
.observatory-fallback::after {
  content: '';
  position: absolute;
  width: min(47vw, 680px);
  aspect-ratio: 1;
  top: 15%;
  right: 1%;
  border: 1px solid rgba(180, 185, 255, 0.35);
  border-radius: 50%;
  box-shadow: inset 0 0 80px rgba(113, 121, 251, 0.12), 0 0 50px rgba(113, 121, 251, 0.08);
  transform: rotate(-24deg) scaleY(0.65);
}
.observatory-fallback::after { transform: rotate(58deg) scaleY(0.58); }
.observatory.is-ready .observatory-fallback { opacity: 0; }

/* A stationary scrim protects the reading column from moving light. */
:root[data-theme="modern"] .observatory-page::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background: linear-gradient(90deg, #050812 0%, rgba(5, 8, 18, 0.95) 23%, rgba(5, 8, 18, 0.76) 39%, rgba(5, 8, 18, 0.1) 64%, transparent 80%);
}

:root[data-theme="modern"] .observatory-page .navbar-inner {
  justify-content: flex-start;
  padding: 1.1rem clamp(1.25rem, 4vw, 4rem);
}
:root[data-theme="modern"] .observatory-page .nav { gap: 0.2rem; }
:root[data-theme="modern"] .observatory-page .nav a {
  padding: 0.45rem 1rem;
  font-size: 0.875rem;
  border-radius: 3px;
}
:root[data-theme="modern"] .observatory-page .nav a:hover { color: #fff; transform: none; }
:root[data-theme="modern"] .observatory-page .style-switcher-nav { margin-left: 1.5rem; }

:root[data-theme="modern"] .observatory-page > .container {
  padding: calc(var(--nav-height, 76px) + 3.75rem) clamp(1.5rem, 4.6vw, 4.5rem) 2rem;
}
:root[data-theme="modern"] .observatory-page header.hero {
  min-height: min(750px, calc(100svh - var(--nav-height, 76px) - 4rem));
  display: flex;
  align-items: center;
  padding: 0 0 5rem;
  margin-bottom: 0;
}
:root[data-theme="modern"] .observatory-page .hero-content {
  grid-template-columns: minmax(0, 1fr);
  gap: 1.75rem;
  width: min(610px, 49%);
}
:root[data-theme="modern"] .observatory-page .profile-section { justify-content: flex-start; }
:root[data-theme="modern"] .observatory-page .profile-pic-wrapper,
:root[data-theme="modern"] .observatory-page #profile_pic { width: 142px; height: 142px; }
:root[data-theme="modern"] .observatory-page .profile-pic-wrapper::before {
  inset: -2px;
  background: linear-gradient(150deg, rgba(180, 196, 255, 0.75), rgba(97, 133, 212, 0.08), rgba(171, 149, 255, 0.65));
  animation: none;
}
:root[data-theme="modern"] .observatory-page #profile_pic {
  background: #090e1b;
  box-shadow: 0 0 35px rgba(133, 157, 255, 0.12);
}
:root[data-theme="modern"] .observatory-page .title-section { animation: none; }
:root[data-theme="modern"] .observatory-page .person-name {
  font-family: 'Playfair Display', serif;
  font-weight: 800;
  letter-spacing: normal;
}
:root[data-theme="modern"] .observatory-page .title-section h1 {
  font-family: 'Inter', sans-serif;
  font-size: clamp(2.25rem, 3.6vw, 3.5rem);
  font-weight: 600;
  letter-spacing: -0.055em;
  line-height: 1.15;
  background: none;
  -webkit-text-fill-color: #f2f4ff;
  color: #f2f4ff;
  margin-bottom: 1.5rem;
  gap: 0.5rem 0.8rem;
}
:root[data-theme="modern"] .observatory-page .phd {
  font-size: 0.45em;
  font-weight: 400;
  letter-spacing: -0.025em;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: none;
  -webkit-text-fill-color: #b7c2de;
}
:root[data-theme="modern"] .observatory-page .title-section .academic-role {
  margin-top: 0;
  font-size: clamp(1rem, 1.3vw, 1.15rem);
  font-weight: 400;
}
:root[data-theme="modern"] .observatory-page .administrative-roles { margin-top: 0.25rem; }
:root[data-theme="modern"] .observatory-page .affiliations { margin-top: 1.75rem; }
:root[data-theme="modern"] .observatory-page .title-section p { line-height: 1.65; }
:root[data-theme="modern"] .observatory-page .social { margin-top: 1.75rem; }
:root[data-theme="modern"] .observatory-page .social ul { gap: 0.75rem 1.75rem; }
:root[data-theme="modern"] .observatory-page .social li { font-size: 0.8rem; letter-spacing: 0.035em; }

:root[data-theme="modern"] .observatory-page article {
  width: min(880px, 55%);
  margin: 0 0 3rem;
  padding: 2.75rem 2.5rem;
  background: linear-gradient(115deg, rgba(9, 15, 30, 0.97), rgba(9, 15, 30, 0.9));
  border: 1px solid rgba(151, 174, 245, 0.16);
  border-radius: 10px;
  box-shadow: inset 0 1px 0 rgba(213, 222, 255, 0.035), 0 20px 80px rgba(0, 0, 0, 0.18);
  backdrop-filter: blur(16px);
}
:root[data-theme="modern"] .observatory-page .article-content {
  grid-template-columns: 1fr;
  gap: 2rem;
}
:root[data-theme="modern"] .observatory-page article header h3 {
  font-family: 'Inter', sans-serif;
  font-weight: 500;
  letter-spacing: -0.04em;
  font-size: 1.9rem;
}
:root[data-theme="modern"] .observatory-page article header h3::after {
  height: 1px;
  width: 40px;
  bottom: -10px;
  background: #8e9fd4;
}
:root[data-theme="modern"] .observatory-page h4 { font-size: 1.12rem; font-weight: 500; }
:root[data-theme="modern"] .observatory-page h4::before { width: 2px; opacity: 0.65; }
:root[data-theme="modern"] .observatory-page .course-code { font-family: 'JetBrains Mono', monospace; font-size: 0.8em; }
:root[data-theme="modern"] .observatory-page footer { width: min(880px, 55%); }

@media (min-width: 1600px) {
  :root[data-theme="modern"] .observatory-page header.hero { min-height: 800px; }
}
@media (max-width: 1100px) {
  :root[data-theme="modern"] .observatory-page .hero-content { width: 57%; }
  :root[data-theme="modern"] .observatory-page article,
  :root[data-theme="modern"] .observatory-page footer { width: calc(85% - 40px); }
}
@media (max-width: 760px) {
  :root[data-theme="modern"] .observatory-page > .container { padding-top: calc(var(--nav-height, 76px) + 2rem); }
  :root[data-theme="modern"] .observatory-page header.hero { min-height: 810px; align-items: flex-start; padding-bottom: 19rem; }
  :root[data-theme="modern"] .observatory-page .hero-content { width: 100%; gap: 1.5rem; }
  :root[data-theme="modern"] .observatory-page .title-section h1 { font-size: clamp(2rem, 6.5vw, 2.7rem); }
  :root[data-theme="modern"] .observatory-page .affiliations { margin-top: 1.25rem; }
  :root[data-theme="modern"] .observatory-page .profile-pic-wrapper,
  :root[data-theme="modern"] .observatory-page #profile_pic { width: 104px; height: 104px; }
  :root[data-theme="modern"] .observatory-page::after {
    background: linear-gradient(180deg, #050812, rgba(5, 8, 18, 0.94) 63%, rgba(5, 8, 18, 0.12) 80%);
  }
  :root[data-theme="modern"] .observatory-page article,
  :root[data-theme="modern"] .observatory-page footer { width: 100%; }
  :root[data-theme="modern"] .observatory-page article { padding: 2rem 1.5rem; }
  :root[data-theme="modern"] .observatory-page .navbar-inner { padding: 0.7rem 0.75rem; justify-content: center; }
  :root[data-theme="modern"] .observatory-page .nav { gap: 0.1rem; }
  :root[data-theme="modern"] .observatory-page .nav a { padding: 0.45rem 0.65rem; font-size: 0.8rem; }
  :root[data-theme="modern"] .observatory-page .style-switcher-nav { margin-left: 0.5rem; }
  .observatory-fallback::before, .observatory-fallback::after { width: 80vw; top: 60%; right: 5%; }
}
@media (max-width: 380px) {
  :root[data-theme="modern"] .observatory-page > .container { padding-left: 1rem; padding-right: 1rem; }
  :root[data-theme="modern"] .observatory-page article { padding: 1.75rem 1rem; }
  :root[data-theme="modern"] .observatory-page .social ul { gap: 0.75rem; }
  :root[data-theme="modern"] .observatory-page .social li { font-size: 0.7rem; }
}
@media (prefers-reduced-motion: reduce) {
  .observatory canvas, .observatory-fallback { transition: none; }
}