:root {
  --bg: #0a0e1a;
  --surface: rgba(15, 22, 40, 0.95);
  --surface-light: rgba(20, 30, 55, 0.9);
  --fg: #f0f6ff;
  --muted: #8ba3c7;
  --accent: #ff6b35;
  --accent-2: #4ecdc4;
  --accent-3: #ffe66d;
  --border: rgba(255, 255, 255, 0.1);
  --code-bg: #1a2235;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Outfit", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--fg);
}

.bg-grid,
.bg-gradient,
.bg-noise {
  position: fixed;
  inset: 0;
  z-index: -2;
}

.bg-grid {
  background-image: linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
}

.bg-gradient {
  background: radial-gradient(circle at 15% 15%, rgba(255, 107, 53, 0.2), transparent 35%),
    radial-gradient(circle at 85% 20%, rgba(78, 205, 196, 0.25), transparent 40%),
    radial-gradient(circle at 50% 80%, rgba(255, 230, 109, 0.15), transparent 45%);
  filter: blur(60px);
}

.bg-noise {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160' viewBox='0 0 160 160'%3E%3Crect width='1' height='1' fill='rgba(255,255,255,0.06)'/%3E%3C/svg%3E");
  opacity: 0.4;
}

.navbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(10, 14, 26, 0.92);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(16px);
}

.nav-content {
  max-width: 1300px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 2rem;
}

.logo {
  text-decoration: none;
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.05em;
  color: var(--fg);
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 1.5rem;
  margin: 0;
  padding: 0;
  font-size: 0.9rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

.nav-actions {
  display: flex;
  gap: 0.75rem;
  margin-left: auto;
}

.btn {
  border-radius: 10px;
  padding: 0.65rem 1.3rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid var(--border);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.8rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s;
  display: inline-block;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), #ff8c5a);
  color: #0a0e1a;
  border: none;
  box-shadow: 0 12px 35px rgba(255, 107, 53, 0.3);
}

.btn-secondary {
  background: transparent;
  color: var(--fg);
  border-color: rgba(255, 255, 255, 0.25);
}

.btn-ghost {
  background: transparent;
  color: var(--accent-2);
  border-color: rgba(78, 205, 196, 0.4);
}

.btn:hover {
  transform: translateY(-2px);
}

.hero {
  padding: 6rem 1.5rem 7rem;
  position: relative;
  overflow: hidden;
}

.hero-content {
  max-width: 1000px;
  margin: 0 auto;
  text-align: center;
}

.eyebrow {
  font-size: 0.9rem;
  letter-spacing: 0.2em;
  color: var(--accent-2);
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.hero h1 {
  font-size: clamp(3.2rem, 6vw, 5.5rem);
  margin: 0.5rem 0 1rem;
  background: linear-gradient(135deg, var(--fg) 0%, var(--accent) 50%, var(--accent-2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
}

.subtitle {
  font-size: 1.25rem;
  color: var(--muted);
  line-height: 1.8;
  max-width: 800px;
  margin: 0 auto;
}

.hero-buttons {
  margin-top: 2.5rem;
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-stats {
  margin-top: 3.5rem;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

.hero-stats div {
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.5rem 1rem;
  background: rgba(10, 14, 26, 0.7);
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.hero-stats span {
  display: block;
  font-size: 2rem;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.main-content {
  background: rgba(8, 12, 22, 0.9);
  border-radius: 40px 40px 0 0;
  margin-top: -2rem;
  position: relative;
  z-index: 1;
  box-shadow: 0 -25px 70px rgba(0, 0, 0, 0.5);
}

.section {
  padding: 5rem max(5vw, 1.5rem);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.section-header {
  text-align: center;
  max-width: 850px;
  margin: 0 auto 3rem;
}

.section h2 {
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  margin-bottom: 0.75rem;
  color: var(--fg);
}

.section-subtitle {
  color: var(--muted);
  line-height: 1.7;
  font-size: 1.1rem;
}

.abstract {
  max-width: 950px;
  margin: 0 auto;
  font-size: 1.1rem;
  line-height: 2;
  color: var(--muted);
}

.abstract strong {
  color: var(--accent);
}

.abstract em {
  color: var(--accent-2);
  font-style: normal;
}

.abstract p {
  margin-bottom: 1.5rem;
}

.card-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  max-width: 1100px;
  margin: 0 auto;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 1.8rem;
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.25);
  transition: transform 0.2s ease, border-color 0.2s;
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 107, 53, 0.3);
}

.card h3 {
  margin: 0 0 0.8rem;
  font-size: 1.15rem;
}

.card p {
  color: var(--muted);
  line-height: 1.7;
  margin: 0;
  font-size: 0.95rem;
}

.figure-stack {
  display: flex;
  flex-direction: column;
  gap: 3rem;
  max-width: 1100px;
  margin: 0 auto;
}

.figure-full {
  background: rgba(12, 18, 35, 0.95);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 24px;
  padding: 2.5rem;
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.4);
}

.figure-full h3 {
  margin-top: 0;
  color: var(--fg);
}

.figure-full p {
  color: var(--muted);
  line-height: 1.7;
}

.figure-image {
  width: 100%;
  margin-top: 1.5rem;
  border-radius: 16px;
  display: block;
}

/* Tables */
.table-container {
  overflow-x: auto;
  max-width: 1200px;
  margin: 0 auto;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: var(--surface);
}

.methods-table,
.results-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.methods-table th,
.methods-table td,
.results-table th,
.results-table td {
  padding: 1rem 1.25rem;
  text-align: left;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.methods-table th,
.results-table th {
  background: rgba(255, 107, 53, 0.1);
  color: var(--fg);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
}

.results-table th {
  text-align: center;
}

.results-table td {
  text-align: center;
}

.results-table td:first-child {
  text-align: left;
}

.methods-table td,
.results-table td {
  color: var(--muted);
}

.methods-table tbody tr:hover,
.results-table tbody tr:hover {
  background: rgba(255, 255, 255, 0.03);
}

.methods-table td:first-child strong,
.results-table td:first-child strong {
  color: var(--fg);
}

.highlight {
  background: rgba(78, 205, 196, 0.15) !important;
  color: var(--accent-2) !important;
  font-weight: 600;
}

.na {
  color: rgba(139, 163, 199, 0.4) !important;
}

.metric-row th {
  font-size: 0.75rem;
  padding: 0.6rem 1rem;
  background: rgba(255, 107, 53, 0.05);
}

.method-legend,
.benchmark-notes {
  max-width: 1100px;
  margin: 1.5rem auto 0;
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
}

.tag {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: 6px;
  font-size: 0.8rem;
  margin: 0 0.25rem;
}

.tag.black-box {
  background: rgba(139, 163, 199, 0.2);
  color: var(--muted);
}

.tag.grey-box {
  background: rgba(255, 230, 109, 0.2);
  color: var(--accent-3);
}

.tag.white-box {
  background: rgba(78, 205, 196, 0.2);
  color: var(--accent-2);
}

/* Code blocks */
.code-container {
  max-width: 900px;
  margin: 0 auto;
  background: var(--code-bg);
  border-radius: 16px;
  padding: 2rem;
  border: 1px solid var(--border);
  overflow-x: auto;
}

.code-container pre {
  margin: 0;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.9rem;
  line-height: 1.7;
}

.code-container code {
  color: var(--fg);
}

.code-container .keyword {
  color: #ff79c6;
}

.code-container .string {
  color: #f1fa8c;
}

.code-container .comment {
  color: #6272a4;
}

.code-container .number {
  color: #bd93f9;
}

.install-cmd {
  max-width: 400px;
  margin: 2rem auto 0;
  background: rgba(78, 205, 196, 0.1);
  border: 1px solid rgba(78, 205, 196, 0.3);
  border-radius: 10px;
  padding: 1rem 1.5rem;
  text-align: center;
}

.install-cmd code {
  font-family: "JetBrains Mono", monospace;
  color: var(--accent-2);
  font-size: 1rem;
}

/* Contact */
.contact-blurb {
  text-align: center;
  color: var(--muted);
  font-size: 1.1rem;
  margin: 1rem auto 2rem;
}

.contact-link {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

.contact-link:hover {
  text-decoration: underline;
}

.contact-links {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Footer */
footer {
  text-align: center;
  padding: 3rem 2rem;
  color: var(--muted);
  border-top: 1px solid var(--border);
}

footer p {
  margin: 0.5rem 0;
}

.footer-authors {
  font-size: 0.85rem;
  opacity: 0.7;
  max-width: 800px;
  margin: 1rem auto 0;
  line-height: 1.6;
}

/* Responsive */
@media (max-width: 1024px) {
  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
  }
}

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

@media (max-width: 600px) {
  .hero-stats {
    grid-template-columns: 1fr;
  }
  
  .hero h1 {
    font-size: 2.5rem;
  }
  
  .table-container {
    font-size: 0.8rem;
  }
  
  .methods-table th,
  .methods-table td,
  .results-table th,
  .results-table td {
    padding: 0.75rem 0.5rem;
  }
}