:root {
  --bg: #020408;
  --bg-grid: rgba(255, 255, 255, 0.03);
  --panel: rgba(6, 10, 18, 0.8);
  --panel-border: rgba(255, 255, 255, 0.07);
  --panel-hover: rgba(76, 175, 242, 0.1);
  --ink: #f0f4f8;
  --ink-soft: #94a3b8;
  --ink-muted: #475569;
  --accent: #38bdf8; /* Sophisticated Science Blue */
  --accent-2: #818cf8;
  --accent-dim: rgba(56, 189, 248, 0.15);
  --font-sans: "Space Grotesk", sans-serif;
  --font-mono: "IBM Plex Mono", monospace;
  --glass: blur(16px);
}

* {
  box-sizing: border-box;
  -webkit-font-smoothing: antialiased;
}

html {
  scroll-behavior: smooth;
  background: var(--bg);
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-sans);
  color: var(--ink);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Technical Grid Background */
.bg-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  background-image: 
    linear-gradient(var(--bg-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--bg-grid) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(circle at 50% 50%, black, transparent 90%);
}

.glow-orb {
  position: absolute;
  width: 800px;
  height: 800px;
  border-radius: 50%;
  filter: blur(140px);
  opacity: 0.08;
  pointer-events: none;
}

.glow-1 { background: var(--accent); top: -300px; left: -200px; }
.glow-2 { background: var(--accent-2); bottom: -300px; right: -200px; }

/* Navigation - Sharper, more technical */
.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  width: 100%;
  padding: 1rem 2rem;
  background: rgba(2, 4, 8, 0.7);
  backdrop-filter: var(--glass);
  border-bottom: 1px solid var(--panel-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  text-decoration: none;
  color: inherit;
  display: flex;
  gap: 1rem;
  align-items: center;
}

.brand img {
  width: 80px;
  height: 80px;
  object-fit: contain;
  transition: transform 0.3s ease;
}

.brand:hover img {
  transform: scale(1.05);
}

.brand-text {
  border-left: 1px solid var(--panel-border);
  padding-left: 1.5rem;
}

.brand-kicker {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.2em;
}

.brand-name {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  color: var(--ink-soft);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--accent);
}

/* Hero - Data-dense and serious */
.hero {
  width: min(1200px, 94vw);
  margin: 8rem auto 6rem;
}

.hero-metadata {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  display: flex;
  gap: 1.5rem;
  margin-bottom: 2rem;
  opacity: 0.8;
}

.hero-metadata span::before {
  content: "[ ";
  color: var(--ink-muted);
}
.hero-metadata span::after {
  content: " ]";
  color: var(--ink-muted);
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 3.8rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.04em;
  margin-bottom: 2rem;
  max-width: 22ch;
}

.hero-lead {
  font-size: 1.2rem;
  color: var(--ink-soft);
  max-width: 600px;
  margin-bottom: 3rem;
  border-left: 2px solid var(--accent-dim);
  padding-left: 1.5rem;
}

.btn {
  padding: 0.75rem 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  text-decoration: none;
  transition: all 0.2s;
  border: 1px solid var(--panel-border);
}

.btn-primary {
  background: var(--ink);
  color: var(--bg);
}

.btn-primary:hover {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
}

.btn-secondary {
  color: var(--ink);
  background: rgba(255,255,255,0.03);
}

/* Bento Grid - Research Dashboard Style */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1px; /* Sharp borders */
  background: var(--panel-border);
  width: min(1200px, 94vw);
  margin: 0 auto;
  border: 1px solid var(--panel-border);
}

.card {
  background: var(--bg);
  padding: 2.5rem;
  position: relative;
  transition: background 0.3s;
}

.card:hover {
  background: rgba(255,255,255,0.01);
}

.card::before {
  content: "";
  position: absolute;
  top: 1rem;
  left: 1rem;
  width: 4px;
  height: 4px;
  background: var(--ink-muted);
}

.card-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  margin-bottom: 2rem;
  display: block;
}

.card-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}

/* Specific Card Layouts */
.span-4 { grid-column: span 4; }
.span-6 { grid-column: span 6; }
.span-8 { grid-column: span 8; }
.span-12 { grid-column: span 12; }

/* Research Stats */
.stat-row {
  display: flex;
  justify-content: space-between;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--panel-border);
}

.stat-value {
  font-family: var(--font-mono);
  color: var(--accent);
  font-weight: 600;
}

/* Area Grid */
.area-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.area-item h3 {
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.area-item p {
  font-size: 0.85rem;
  color: var(--ink-soft);
  line-height: 1.5;
}

/* Project Cards */
.project-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.project-card {
  display: flex;
  gap: 1.5rem;
  padding: 1.5rem;
  border: 1px solid var(--panel-border);
  background: rgba(255, 255, 255, 0.02);
  text-decoration: none;
  color: inherit;
  transition: background 0.2s, border-color 0.2s;
}

.project-card:hover {
  background: var(--panel-hover);
  border-color: var(--accent);
}

.project-info h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--ink);
}

.project-info p {
  font-size: 0.85rem;
  color: var(--ink-soft);
  line-height: 1.5;
  margin-bottom: 0.75rem;
}

.project-link {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  letter-spacing: 0.05em;
}

/* Collaboration Layout */
.collab-layout {
  display: flex;
  gap: 4rem;
  align-items: flex-start;
}

.collab-partners {
  width: 300px;
  flex-shrink: 0;
  padding: 1.5rem;
  background: var(--accent-dim);
  border: 1px solid var(--accent);
}

@media (max-width: 768px) {
  .project-grid { grid-template-columns: 1fr; }
  .collab-layout {
    flex-direction: column;
    gap: 2rem;
  }
  .collab-partners {
    width: 100%;
  }
}

/* Footer */
footer {
  width: min(1200px, 94vw);
  margin: 6rem auto 4rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* Animations */
@keyframes lineGrow {
  from { width: 0; }
  to { width: 100%; }
}

.technical-line {
  height: 1px;
  background: linear-gradient(90deg, var(--accent), transparent);
  margin-bottom: 2rem;
  animation: lineGrow 1.5s ease-out forwards;
}

@media (max-width: 1024px) {
  .span-4, .span-6, .span-8 { grid-column: span 6; }
  .area-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .span-4, .span-6, .span-8, .span-12 { grid-column: span 12; }
  .nav-links { display: none; }
  .area-grid { grid-template-columns: 1fr; }
  .hero-title { font-size: 2.5rem; }
}