:root {
  color-scheme: light;
  --ink: #0b1a1f;
  --paper: #f5f1e7;
  --accent: #2f74ff;
  --accent-dark: #1d4ed8;
  --teal: #1b5fbf;
  --mist: #dbe8ff;
  --shadow: rgba(11, 26, 31, 0.12);
  --grid: rgba(11, 26, 31, 0.08);
}

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

body {
  font-family: "Space Grotesk", system-ui, sans-serif;
  background: linear-gradient(145deg, #e8f1ff 0%, #9ebdff 50%, #79adff 100%);
  color: var(--ink);
  min-height: 100vh;
}

main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 48px 24px 80px;
  display: grid;
  gap: 64px;
}

header {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  gap: 32px;
  align-items: center;
  background: linear-gradient(130deg, #ffffffcc, #f0f6f3cc);
  border: 1px solid #ffffff;
  box-shadow: 0 25px 60px var(--shadow);
  border-radius: 28px;
  padding: 36px;
  position: relative;
  overflow: hidden;
}

.aerial-fleet {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 1;
}

.aircraft {
  position: absolute;
  color: rgba(47, 116, 255, 0.8);
  display: grid;
  place-items: center;
  filter: drop-shadow(0 8px 16px rgba(47, 116, 255, 0.25));
}

.aircraft svg {
  width: 140px;
  height: auto;
}

.aircraft .trail {
  position: absolute;
  width: 120px;
  height: 2px;
  background: linear-gradient(90deg, rgba(47, 116, 255, 0.5), transparent);
  right: 80px;
  top: 50%;
}

.aircraft.plane {
  top: 12%;
  right: -12%;
  animation: flyby 20s ease-in-out infinite;
}

.aircraft.plane svg {
  transform: rotate(-8deg);
}

.aircraft.drone {
  top: 38%;
  right: -18%;
  animation: hover 18s ease-in-out infinite;
  color: rgba(29, 78, 216, 0.8);
}

.aircraft.drone svg {
  width: 110px;
  transform: rotate(4deg);
}

.aircraft.uam {
  top: 62%;
  right: -16%;
  animation: glide 22s ease-in-out infinite;
  color: rgba(91, 139, 255, 0.85);
}

.aircraft.uam svg {
  width: 130px;
  transform: rotate(-4deg);
}

header::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 28px 28px;
  opacity: 0.6;
  pointer-events: none;
}

.hero {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 20px;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--teal);
}

.tag span {
  background: var(--accent);
  color: white;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
}

.gwu-link {
  color: var(--teal);
  text-decoration: none;
  position: relative;
  font-weight: 600;
}

.gwu-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -3px;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, rgba(27, 95, 191, 0), rgba(27, 95, 191, 0.9), rgba(27, 95, 191, 0));
  transform-origin: left;
  transform: scaleX(0);
  opacity: 0;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.gwu-link:hover::after {
  transform: scaleX(1);
  opacity: 1;
}

h1 {
  font-family: "Playfair Display", serif;
  font-size: clamp(2.4rem, 3vw, 3.5rem);
  line-height: 1.05;
}

h1 em {
  color: var(--accent-dark);
  font-style: normal;
}

.hero p {
  font-size: 1.1rem;
  line-height: 1.6;
  max-width: 520px;
}

.hero p strong {
  font-weight: 600;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  border: none;
  padding: 12px 20px;
  border-radius: 999px;
  font-weight: 600;
  cursor: pointer;
  background: var(--accent);
  color: white;
  box-shadow: 0 10px 20px rgba(47, 116, 255, 0.35);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.button.secondary {
  background: transparent;
  border: 1px solid var(--ink);
  color: var(--ink);
  box-shadow: none;
}

.button.secondary.contact-button,
.button.secondary.cv-button {
  position: relative;
  overflow: hidden;
  border-color: rgba(27, 95, 191, 0.6);
  color: var(--teal);
}

.button.secondary.contact-button::after,
.button.secondary.cv-button::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(47, 116, 255, 0.18), rgba(47, 116, 255, 0));
  opacity: 0;
  transition: opacity 0.2s ease;
  z-index: 0;
}

.button.secondary.contact-button span,
.button.secondary.cv-button span {
  position: relative;
  z-index: 1;
}

.button.secondary.contact-button:hover,
.button.secondary.cv-button:hover {
  transform: translateY(-2px);
  border-color: rgba(27, 95, 191, 0.9);
  box-shadow: 0 10px 18px rgba(27, 95, 191, 0.2);
}

.button.secondary.contact-button:hover::after,
.button.secondary.cv-button:hover::after {
  opacity: 1;
}

.button:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 24px rgba(47, 116, 255, 0.45);
}

.quick-overview {
  position: relative;
  z-index: 1;
  background: #f8faf9;
  border-radius: 20px;
  padding: 18px;
  display: grid;
  gap: 16px;
  box-shadow: inset 0 0 0 1px rgba(11, 26, 31, 0.08);
  max-width: 420px;
}

.panel-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.panel-card {
  padding: 14px;
  border-radius: 16px;
  background: white;
  border: 1px solid rgba(11, 26, 31, 0.06);
  display: grid;
  gap: 10px;
}

.panel-card h3 {
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--teal);
}

.metric {
  font-size: 1.6rem;
  font-weight: 700;
}

.advisor-link {
  color: var(--ink);
  text-decoration: none;
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  animation: advisorPulse 2.4s ease-in-out infinite;
}

.advisor-link::after {
  content: "↗";
  font-size: 1rem;
  color: var(--accent-dark);
  transform: translateY(-1px);
}

.advisor-link::before {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, rgba(47, 116, 255, 0.1), rgba(47, 116, 255, 0.65));
  transform-origin: left;
  transform: scaleX(0.25);
  transition: transform 0.25s ease;
}

.advisor-link:hover::before {
  transform: scaleX(1);
}

.grid-section {
  display: grid;
  gap: 24px;
  background: rgba(255, 255, 255, 0.85);
  border-radius: 22px;
  padding: 28px;
  border: 1px solid rgba(11, 26, 31, 0.08);
  box-shadow: 0 18px 30px var(--shadow);
}

.section-title {
  font-size: 1.6rem;
  font-weight: 600;
}

.cards {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.card {
  background: white;
  border-radius: 20px;
  padding: 20px;
  box-shadow: 0 18px 30px var(--shadow);
  border: 1px solid rgba(11, 26, 31, 0.05);
  display: grid;
  gap: 12px;
}

.card strong {
  font-size: 1.1rem;
}

.publication-link {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease, transform 0.2s ease;
}

.publication-link:visited {
  color: inherit;
}

.publication-link:hover {
  transform: translateY(-1px);
  color: var(--accent-dark);
}

.card:hover .publication-link,
.publication:hover .publication-link {
  transform: translateY(-1px);
  color: var(--accent-dark);
}

.timeline {
  display: grid;
  gap: 16px;
  border-left: 2px dashed rgba(11, 26, 31, 0.2);
  padding-left: 20px;
}

.timeline-item {
  background: white;
  border-radius: 16px;
  padding: 14px 16px;
  box-shadow: 0 12px 22px var(--shadow);
  border: 1px solid rgba(11, 26, 31, 0.06);
  display: grid;
  gap: 6px;
}

.timeline-item span {
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--teal);
}

footer {
  display: grid;
  gap: 10px;
  align-items: center;
  text-align: center;
  font-size: 0.95rem;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(11, 26, 31, 0.08);
  border-radius: 18px;
  padding: 20px;
  box-shadow: 0 12px 24px var(--shadow);
}

footer strong {
  display: inline-block;
  padding-bottom: 8px;
  position: relative;
}

footer strong::after {
  content: "";
  position: absolute;
  left: 10%;
  right: 10%;
  bottom: 0;
  height: 1px;
  background: linear-gradient(
    90deg,
    rgba(27, 95, 191, 0),
    rgba(27, 95, 191, 0.6),
    rgba(27, 95, 191, 0)
  );
  animation: footerLineGlow 3.6s ease-in-out infinite;
}

.footer-pop {
  animation: footerPop 0.45s ease-out;
}

.footer-details {
  display: grid;
  gap: 6px;
  font-weight: 500;
}

.footer-links {
  display: inline-flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
}

.footer-links a {
  color: var(--ink);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 0.02em;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(47, 116, 255, 0.1);
  transition: transform 0.2s ease, background 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

      .page-header {
        display: grid;
        gap: 12px;
        align-items: start;
      }

      .publication-list {
        display: grid;
        gap: 18px;
      }

      .publication {
        background: white;
        border-radius: 18px;
        padding: 20px;
        box-shadow: 0 18px 30px var(--shadow);
        border: 1px solid rgba(11, 26, 31, 0.05);
        display: grid;
        gap: 10px;
      }

      .publication h2 {
        font-size: 1.2rem;
      }

      .publication span {
        font-size: 0.85rem;
        text-transform: uppercase;
        letter-spacing: 0.06em;
        color: var(--teal);
      }

      .back-link {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        color: var(--ink);
        text-decoration: none;
        font-weight: 600;
        transition: transform 0.2s ease, color 0.2s ease;
      }

      .back-link:hover {
        transform: translateX(-2px);
        color: var(--accent-dark);
      }

.footer-icon {
  width: 18px;
  height: 18px;
  fill: currentColor;
  transition: transform 0.2s ease;
}

.footer-links a:hover {
  transform: translateY(-1px);
  background: rgba(47, 116, 255, 0.2);
}

.footer-links a:hover .footer-icon {
  transform: translateY(-1px) scale(1.06);
}

.mail-link {
  display: inline-block;
  width: fit-content;
  justify-self: center;
  color: var(--ink);
  text-decoration: none;
  font-weight: 600;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.mail-link:hover {
  color: var(--accent-dark);
  border-color: rgba(27, 95, 191, 0.6);
}

.footer-note {
  color: rgba(11, 26, 31, 0.7);
  font-size: 0.85rem;
}

.footer-copyright {
  color: rgba(11, 26, 31, 0.6);
  font-size: 0.85rem;
}

.orbit {
  position: absolute;
  width: 180px;
  height: 180px;
  border: 1px dashed rgba(47, 116, 255, 0.4);
  border-radius: 50%;
  top: -60px;
  right: -40px;
  animation: spin 28s linear infinite;
}

.orbit-marker {
  position: absolute;
  width: 18px;
  height: 18px;
  background: no-repeat center / contain;
  transform-origin: center;
  filter: drop-shadow(0 4px 8px rgba(47, 116, 255, 0.25));
}

.orbit-marker.plane {
  top: 0%;
  left: 50%;
  transform: translate(-50%, -50%) rotate(0deg);
  background-image: url("data:image/svg+xml,%3Csvg%20xmlns%3D%27http%3A//www.w3.org/2000/svg%27%20viewBox%3D%270%200%2024%2024%27%20fill%3D%27none%27%20stroke%3D%27%231d4ed8%27%20stroke-width%3D%272%27%20stroke-linecap%3D%27round%27%20stroke-linejoin%3D%27round%27%3E%3Cpath%20d%3D%27M16%2010h4a2%202%200%200%201%200%204h-4l-4%207h-3l2%20-7h-4l-2%202h-3l2%20-4l-2%20-4h3l2%202h4l-2%20-7h3l4%207%27/%3E%3C/svg%3E");
}

.orbit-marker.drone {
  top: 50%;
  left: 100%;
  transform: translate(-50%, -50%) rotate(90deg);
  background-image: url("data:image/svg+xml,%3Csvg%20xmlns%3D%27http%3A//www.w3.org/2000/svg%27%20viewBox%3D%270%200%2024%2024%27%20fill%3D%27none%27%20stroke%3D%27%231d4ed8%27%20stroke-width%3D%272%27%20stroke-linecap%3D%27round%27%20stroke-linejoin%3D%27round%27%3E%3Cpath%20d%3D%27M10%2010h4v4h-4l0%20-4%27/%3E%3Cpath%20d%3D%27M10%2010l-3.5%20-3.5%27/%3E%3Cpath%20d%3D%27M9.96%206a3.5%203.5%200%201%200%20-3.96%203.96%27/%3E%3Cpath%20d%3D%27M14%2010l3.5%20-3.5%27/%3E%3Cpath%20d%3D%27M18%209.96a3.5%203.5%200%201%200%20-3.96%20-3.96%27/%3E%3Cpath%20d%3D%27M14%2014l3.5%203.5%27/%3E%3Cpath%20d%3D%27M14.04%2018a3.5%203.5%200%201%200%203.96%20-3.96%27/%3E%3Cpath%20d%3D%27M10%2014l-3.5%203.5%27/%3E%3Cpath%20d%3D%27M6%2014.04a3.5%203.5%200%201%200%203.96%203.96%27/%3E%3C/svg%3E");
}

.orbit-marker.plane-alt {
  top: 50%;
  left: 0%;
  transform: translate(-50%, -50%) rotate(270deg);
  background-image: url("data:image/svg+xml,%3Csvg%20xmlns%3D%27http%3A//www.w3.org/2000/svg%27%20viewBox%3D%270%200%2024%2024%27%20fill%3D%27none%27%20stroke%3D%27%231d4ed8%27%20stroke-width%3D%272%27%20stroke-linecap%3D%27round%27%20stroke-linejoin%3D%27round%27%3E%3Cpath%20d%3D%27M16%2010h4a2%202%200%200%201%200%204h-4l-4%207h-3l2%20-7h-4l-2%202h-3l2%20-4l-2%20-4h3l2%202h4l-2%20-7h3l4%207%27/%3E%3C/svg%3E");
}

.orbit-marker.helicopter {
  top: 100%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.orbit-marker.helicopter::after {
  content: "";
  position: absolute;
  inset: 0;
  background: no-repeat center / contain;
  background-image: url("data:image/svg+xml,%3Csvg%20xmlns%3D%27http%3A//www.w3.org/2000/svg%27%20viewBox%3D%270%200%2024%2024%27%20fill%3D%27none%27%20stroke%3D%27%231d4ed8%27%20stroke-width%3D%272%27%20stroke-linecap%3D%27round%27%20stroke-linejoin%3D%27round%27%3E%3Cpath%20d%3D%27M3%2010l1%202h6%27/%3E%3Cpath%20d%3D%27M12%209a2%202%200%200%200%20-2%202v3c0%201.1%20.9%202%202%202h7a2%202%200%200%200%202%20-2c0%20-3.31%20-3.13%20-5%20-7%20-5h-2%27/%3E%3Cpath%20d%3D%27M13%209l0%20-3%27/%3E%3Cpath%20d%3D%27M5%206l15%200%27/%3E%3Cpath%20d%3D%27M15%209.1v3.9h5.5%27/%3E%3Cpath%20d%3D%27M15%2019l0%20-3%27/%3E%3Cpath%20d%3D%27M19%2019l-8%200%27/%3E%3C/svg%3E");
  animation: counterSpin 28s linear infinite;
}



@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes counterSpin {
  to {
    transform: rotate(-360deg);
  }
}

@keyframes footerPop {
  0% {
    transform: scale(1);
    box-shadow: 0 12px 24px var(--shadow);
  }
  50% {
    transform: scale(1.02);
    box-shadow: 0 20px 32px rgba(11, 26, 31, 0.18);
  }
  100% {
    transform: scale(1);
    box-shadow: 0 12px 24px var(--shadow);
  }
}

@keyframes footerLineGlow {
  0%,
  100% {
    opacity: 0.3;
    filter: blur(0);
  }
  50% {
    opacity: 1;
    filter: blur(0.6px);
  }
}

@keyframes floatIn {
  from {
    opacity: 0;
    transform: translateY(14px) scale(0.985);
    filter: blur(4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
    filter: blur(0);
  }
}

@keyframes advisorPulse {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-1px);
  }
}

@keyframes flyby {
  0% {
    transform: translate(0, 0) rotate(0deg);
    opacity: 0.2;
  }
  50% {
    transform: translate(-140px, -18px) rotate(2deg);
  }
  100% {
    transform: translate(-260px, 12px) rotate(-2deg);
    opacity: 0.2;
  }
}

@keyframes hover {
  0% {
    transform: translate(0, 0);
    opacity: 0.2;
  }
  50% {
    transform: translate(-120px, -8px);
  }
  100% {
    transform: translate(-220px, 8px);
    opacity: 0.2;
  }
}

@keyframes glide {
  0% {
    transform: translate(0, 0);
    opacity: 0.2;
  }
  55% {
    transform: translate(-140px, 10px);
  }
  100% {
    transform: translate(-240px, -6px);
    opacity: 0.2;
  }
}

.fade-in {
  animation: floatIn 0.9s cubic-bezier(0.21, 0.8, 0.32, 1) forwards;
  will-change: opacity, transform, filter;
}

@media (max-width: 900px) {
  header {
    grid-template-columns: 1fr;
  }

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

  .quick-overview {
    max-width: none;
    width: 100%;
  }
}

@media (max-width: 600px) {
  main {
    padding: 32px 18px 60px;
  }

  header {
    padding: 28px;
  }

  .tag span {
    padding: 4px 10px;
  }

  .quick-overview {
    max-width: none;
    width: 100%;
  }
}