:root {
  --primary: #4A6CF7;
  --accent: #6E56CF;
  --bg: #ffffff;
  --card: #ffffff;
  --text: #15171a;
  --muted: #5f6570;
  --border: #e5e8ef;
  --shadow: 0 12px 36px rgba(20, 25, 40, 0.08);
}

body.dark-mode {
  --bg: #0f1013;
  --card: #171920;
  --text: #eceef3;
  --muted: #b8bfca;
  --border: #2a2f3a;
  --shadow: 0 12px 36px rgba(0, 0, 0, 0.35);
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Inter", sans-serif;
  background: var(--bg);
  color: var(--text);
  transition: background-color 0.25s ease, color 0.25s ease;
}

.section-pad {
  padding-top: 5rem;
  padding-bottom: 5rem;
}

.nav-glass {
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(8px);
}

.nav-logo {
  font-weight: 800;
  color: var(--primary);
}

.navbar-item,
.title,
.subtitle,
.content,
p,
strong,
summary {
  color: var(--text);
}

.project-title {
  font-size: clamp(2rem, 4vw, 3.6rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.project-subtitle {
  color: var(--muted);
  margin-top: 1.25rem;
  margin-bottom: 1.5rem;
}

.authors {
  color: var(--muted);
  margin-bottom: 1rem;
}

.affiliation {
  margin-top: -0.4rem;
  font-size: 0.95rem;
}

.venue-badges {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 1.2rem;
}

.venue-tag {
  background: color-mix(in srgb, var(--primary) 18%, transparent);
  color: var(--primary);
  border: 1px solid color-mix(in srgb, var(--primary) 40%, transparent);
  border-radius: 9999px;
  font-weight: 600;
}

.hero-buttons,
.card-buttons,
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.hero-buttons {
  justify-content: center;
  margin-bottom: 0.55rem;
}

.action-btn {
  border: 1px solid color-mix(in srgb, var(--primary) 45%, transparent);
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  transition: transform 0.22s ease, opacity 0.22s ease;
}

.dataset-btn {
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

.resource-caption {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}

.action-btn:hover {
  opacity: 0.92;
  transform: translateY(-1px);
}

.teaser-wrapper {
  margin-top: 0.25rem;
}

.teaser-wrapper img,
.rounded-image img {
  border-radius: 16px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  background: var(--card);
}

.teaser-wrapper figcaption {
  margin-top: 0.9rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.section-title {
  margin-bottom: 1.75rem;
}

.motivation-grid {
  display: grid;
  gap: 1rem;
}

.motivation-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow);
  padding: 1rem;
}

.motivation-item h4 {
  color: var(--text);
  font-size: 1.12rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
}

.motivation-item p {
  color: var(--muted);
  line-height: 1.6;
}

.motivation-media img {
  width: 100%;
  height: 210px;
  object-fit: contain;
  object-position: center;
  border-radius: 12px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  background: var(--card);
}

.pipeline {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.pipeline-card {
  width: min(100%, 760px);
  background: var(--card);
  border-radius: 18px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  padding: 1.35rem;
}

.pipeline-stage {
  color: var(--primary);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.8rem;
  margin-bottom: 0.5rem;
}

.card-title {
  margin-bottom: 0.65rem !important;
}

.pipeline-arrow {
  color: var(--accent);
  font-size: 1.35rem;
  animation: floatArrow 1.8s ease-in-out infinite;
}

@keyframes floatArrow {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(4px); }
}

.highlight-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow);
  padding: 1.35rem 1.2rem;
}

.highlight-index {
  color: var(--primary);
  font-weight: 700;
  margin-bottom: 0.35rem;
}

.highlight-figure img {
  width: 100%;
  height: auto;
  object-fit: contain;
  border-radius: 12px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  background: var(--card);
}

.highlight-figure figcaption {
  margin-top: 0.75rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.contribution-list {
  margin: 1rem 0 0 1.2rem;
}

.contribution-list li {
  margin-bottom: 0.55rem;
  color: var(--text);
  line-height: 1.55;
}

.highlight-card pre {
  background: #0d1117;
  color: #d5e0ee;
  border-radius: 12px;
  margin-top: 1rem;
  font-size: 0.85rem;
  overflow-x: auto;
}

.highlight-brief {
  color: var(--muted);
  font-weight: 600;
  margin-top: -0.4rem;
  margin-bottom: 0.8rem;
}

.future-block {
  max-width: 580px;
  margin: 0 auto;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: var(--shadow);
  padding: 2rem 1.25rem;
}

.future-block hr {
  border-color: var(--border);
  margin: 1.25rem auto;
  width: 65%;
}

.future-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.95rem;
  margin-top: 1rem;
}

.future-grid > div {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow);
  padding: 1rem 0.8rem;
  font-weight: 600;
}

.footer-min {
  background: transparent;
  border-top: 1px solid var(--border);
  padding-top: 2rem;
  padding-bottom: 2rem;
}

.footer-links {
  justify-content: center;
  margin-bottom: 0.75rem;
}

.footer-links a {
  color: var(--muted);
}

.theme-toggle-btn {
  border-color: var(--border);
  background: var(--card);
  color: var(--text);
}

.reveal-on-scroll {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.45s ease, transform 0.45s ease;
}

.reveal-on-scroll.revealed {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 768px) {
  .section-pad {
    padding-top: 3.8rem;
    padding-bottom: 3.8rem;
  }

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

  .motivation-media img {
    height: 170px;
  }
}