/* AgentDoG Project Page - Modern Academic Style */

/* ==================== CSS Variables ==================== */
:root {
  --bg-primary: #0b0c10;
  --bg-secondary: #1a1c23;
  --bg-card: rgba(255, 255, 255, 0.03);
  --bg-card-hover: rgba(255, 255, 255, 0.06);

  --accent-cyan: #6ae3ff;
  --accent-purple: #9f8bff;
  --accent-gradient: linear-gradient(135deg, #6ae3ff, #9f8bff);

  --text-primary: #e6e6e6;
  --text-secondary: #a0a0a0;
  --text-muted: #666;

  --border-color: rgba(255, 255, 255, 0.1);
  --shadow-glow: 0 0 30px rgba(106, 227, 255, 0.15);

  --font-main: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Consolas', monospace;

  --max-width: 1200px;
  --section-padding: 80px 0;
}

/* ==================== Reset & Base ==================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  color: var(--accent-cyan);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: var(--accent-purple);
}

img {
  max-width: 100%;
  height: auto;
}

/* ==================== Container ==================== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ==================== Navigation ==================== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(11, 12, 16, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
}

.nav-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.nav-logo {
  font-size: 1.25rem;
  font-weight: 700;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.3s ease;
}

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

/* Navigation Dropdown */
.nav-dropdown {
  position: relative;
}

.dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(11, 12, 16, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 8px 0;
  min-width: 140px;
  list-style: none;
  z-index: 1001;
  margin-top: 8px;
}

.nav-dropdown:hover .dropdown-menu {
  display: block;
}

.dropdown-menu li {
  padding: 0;
}

.dropdown-menu a {
  display: block;
  padding: 8px 16px;
  color: var(--text-secondary);
  font-size: 0.85rem;
  transition: all 0.2s ease;
}

.dropdown-menu a:hover {
  background: var(--bg-card-hover);
  color: var(--accent-cyan);
}

/* ==================== Language Toggle ==================== */
.lang-toggle {
  padding: 8px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-primary);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
}

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

/* ==================== Hero Section ==================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 30% 30%, rgba(106, 227, 255, 0.08) 0%, transparent 50%),
              radial-gradient(circle at 70% 70%, rgba(159, 139, 255, 0.08) 0%, transparent 50%);
  animation: float 20s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(-20px, -20px); }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 900px;
}

.hero-header {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.hero-logo {
  flex-shrink: 0;
}

.hero-logo img {
  max-width: 135px;
  height: auto;
  border-radius: 12px;
  border: 1px solid var(--border-color);
}

.hero-title {
  font-size: clamp(3rem, 8vw, 5rem);
  font-weight: 800;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: clamp(1.1rem, 2.5vw, 1.4rem);
  color: var(--text-secondary);
  margin-bottom: 24px;
  font-weight: 400;
}

.hero-authors {
  font-size: 1rem;
  color: var(--text-muted);
  margin-bottom: 40px;
}

.hero-authors a {
  color: var(--accent-cyan);
}

/* ==================== Buttons ==================== */
.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  transition: all 0.3s ease;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
}

.btn:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-cyan);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--accent-gradient);
  border: none;
  color: var(--bg-primary);
}

.btn-primary:hover {
  opacity: 0.9;
  color: var(--bg-primary);
}

.btn svg, .btn img {
  width: 18px;
  height: 18px;
}

/* ==================== Section Styles ==================== */
section {
  padding: var(--section-padding);
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 700;
  text-align: center;
  margin-bottom: 16px;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  text-align: center;
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto 48px;
  font-size: 1.1rem;
}

/* ==================== SOTA Highlight Section ==================== */
.sota-highlight {
  padding: 60px 0;
  background: var(--bg-primary);
}

.sota-images-vertical {
  display: flex;
  flex-direction: column;
  gap: 32px;
  margin-top: 32px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.sota-image {
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
}

.sota-image img {
  width: 100%;
  display: block;
}

/* ==================== Abstract Section ==================== */
.abstract {
  background: var(--bg-secondary);
}

.abstract-text {
  font-size: 1.15rem;
  line-height: 1.8;
  color: var(--text-secondary);
  text-align: center;
  max-width: 900px;
  margin: 0 auto 60px;
}

/* ==================== Feature Cards ==================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 32px;
  transition: all 0.3s ease;
}

.feature-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-cyan);
  box-shadow: var(--shadow-glow);
  transform: translateY(-4px);
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.feature-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ==================== Taxonomy Section ==================== */
.taxonomy-visual {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-bottom: 48px;
}

.taxonomy-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 28px;
  text-align: center;
}

.taxonomy-intro {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--text-secondary);
  text-align: center;
  max-width: 900px;
  margin: 0 auto 48px;
}

.taxonomy-card h3 {
  font-size: 1.1rem;
  color: var(--accent-cyan);
  margin-bottom: 8px;
}

.taxonomy-count {
  font-size: 2.5rem;
  font-weight: 700;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.taxonomy-label {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.taxonomy-desc {
  color: var(--text-muted);
  font-size: 0.8rem;
  margin-top: 12px;
  line-height: 1.5;
}

.taxonomy-image {
  margin-top: 48px;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.taxonomy-image img {
  width: 100%;
  display: block;
}

.taxonomy-image .image-caption {
  padding: 12px;
  background: var(--bg-card);
}

/* ==================== Data Synthesis Section ==================== */
.data-synthesis {
  background: var(--bg-secondary);
}

.synthesis-intro {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--text-secondary);
  text-align: center;
  max-width: 900px;
  margin: 0 auto 48px;
}

.synthesis-main-image {
  margin-bottom: 48px;
  text-align: center;
}

.synthesis-main-image img {
  width: 100%;
  max-width: 1200px;
  border-radius: 12px;
  border: 1px solid var(--border-color);
}

.synthesis-distribution {
  text-align: center;
  margin-bottom: 48px;
}

.synthesis-pair {
  display: grid;
  grid-template-columns: 3fr 2fr;
  /* Match the centered "media-85" visual centerline above */
  --pair-img-h: 400px;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto 48px;
  gap: 6px;
  justify-items: center;
  align-items: start;
}

.synthesis-pair .synthesis-distribution,
.synthesis-pair .synthesis-comparison {
  margin-bottom: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.synthesis-pair .synthesis-distribution img,
.synthesis-pair .synthesis-comparison img {
  height: var(--pair-img-h);
  width: auto;
  max-width: 100%;
}


.synthesis-distribution img {
  width: 100%;
  max-width: 1000px;
  border-radius: 12px;
  border: 1px solid var(--border-color);
}

.synthesis-comparison {
  text-align: center;
}

.synthesis-comparison img {
  width: 100%;
  max-width: 800px;
  border-radius: 12px;
  border: 1px solid var(--border-color);
}

/* ==================== Dataset Section ==================== */
.dataset {
  background: var(--bg-primary);
}

.dataset-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
  margin-bottom: 48px;
}

.stat-card {
  text-align: center;
  padding: 24px;
  background: var(--bg-card);
  border-radius: 12px;
  border: 1px solid var(--border-color);
}

.stat-value {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--accent-cyan);
}

.stat-label {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-top: 8px;
}

.dataset-download {
  text-align: center;
  margin-top: 32px;
}

.dataset-download .btn {
  font-size: 1.1rem;
  padding: 16px 32px;
}

/* ==================== Performance Section ==================== */
.performance-content {
  display: grid;
  gap: 48px;
}

.perf-block {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 32px;
}

.perf-block h3 {
  font-size: 1.3rem;
  margin-bottom: 24px;
  color: var(--accent-cyan);
}

.perf-image {
  border-radius: 12px;
  overflow: hidden;
}

.perf-image img {
  width: 100%;
  display: block;
}

/* ==================== Tables ==================== */
.table-container {
  overflow-x: auto;
  margin-top: 24px;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

th, td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

th {
  color: var(--accent-cyan);
  font-weight: 600;
  background: rgba(106, 227, 255, 0.05);
}

tr:hover {
  background: var(--bg-card-hover);
}

/* Highlighted rows for our models */
.row-highlight {
  background: rgba(106, 227, 255, 0.08);
}

.row-highlight:hover {
  background: rgba(106, 227, 255, 0.12);
}

.row-highlight td {
  color: var(--text-primary);
}

/* Closed-source model rows (grayed out) */
.row-closed td {
  color: var(--text-muted);
}

/* Table description */
.table-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 16px;
}

/* ==================== Models Section ==================== */
.models {
  background: var(--bg-secondary);
}

.model-category {
  margin-bottom: 48px;
}

.model-category:last-child {
  margin-bottom: 0;
}

.model-category-title {
  font-size: 1.3rem;
  color: var(--accent-cyan);
  margin-bottom: 8px;
  text-align: center;
}

.model-category-desc {
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 24px;
}

.models-row {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.model-card {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 16px 20px;
  transition: all 0.3s ease;
}

.model-card:hover {
  border-color: var(--accent-cyan);
  box-shadow: var(--shadow-glow);
}

.model-info h4 {
  font-size: 0.95rem;
  white-space: nowrap;
  margin: 0;
}

.model-links {
  display: flex;
  gap: 8px;
}

.model-link {
  padding: 6px 12px;
  background: var(--bg-card-hover);
  border-radius: 6px;
  font-size: 0.8rem;
  color: var(--text-primary);
  transition: all 0.3s ease;
  white-space: nowrap;
}

.model-link:hover {
  background: var(--accent-cyan);
  color: var(--bg-primary);
}

/* ==================== XAI Section ==================== */
.xai-intro {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--text-secondary);
  text-align: center;
  max-width: 900px;
  margin: 0 auto 48px;
}

.xai-images-vertical {
  display: flex;
  flex-direction: column;
  gap: 40px;
  align-items: center;
  max-width: 900px;
  margin: 0 auto;
}

.xai-image-wrapper {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.xai-image {
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
}

.xai-image img {
  width: 100%;
  display: block;
}

.image-caption {
  text-align: center;
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-style: italic;
}

.xai-images-vertical .xai-image-wrapper {
  width: 100%;
}

.xai-images-vertical .xai-image img {
  width: 100%;
}

/* ==================== Citation Section ==================== */
.citation {
  background: var(--bg-secondary);
}

.citation-block {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 24px;
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.citation-block pre {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-secondary);
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-word;
}

.copy-btn {
  position: absolute;
  top: 16px;
  right: 16px;
  padding: 8px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 0.85rem;
  transition: all 0.3s ease;
}

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

.contact-info {
  display: flex;
  justify-content: center;
  gap: 48px;
  margin-top: 40px;
  flex-wrap: wrap;
}

.contact-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.contact-label {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 500;
}

.contact-item a {
  color: var(--accent-cyan);
  font-size: 1rem;
}

.contact-item a:hover {
  color: var(--accent-purple);
}

/* ==================== Footer ==================== */
.footer {
  padding: 40px 24px;
  text-align: center;
  border-top: 1px solid var(--border-color);
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* ==================== Responsive Design ==================== */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .lang-toggle {
    font-size: 0.8rem;
    padding: 6px 12px;
  }

  .hero {
    padding: 100px 20px 60px;
  }

  .hero-header {
    flex-direction: column;
    gap: 24px;
  }

  .hero-logo img {
    max-width: 100px;
  }

  .btn-group {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    max-width: 280px;
    justify-content: center;
  }

  section {
    padding: 60px 0;
  }

  .models-row {
    flex-direction: column;
    align-items: center;
  }

  .model-card {
    width: 100%;
    max-width: 400px;
    justify-content: space-between;
  }

  table {
    font-size: 0.75rem;
  }

  th, td {
    padding: 8px 10px;
  }

  .synthesis-pair {
    grid-template-columns: 1fr;
    max-width: 100%;
  }

  .synthesis-pair .synthesis-distribution img,
  .synthesis-pair .synthesis-comparison img {
    transform: none;
    height: auto;
    width: 100%;
    max-width: 100%;
  }

  .media-85,
  .media-40 {
    max-width: 100%;
  }
}

@media (max-width: 480px) {
  .features-grid {
    grid-template-columns: 1fr;
  }

  .taxonomy-visual {
    grid-template-columns: 1fr;
  }

  .dataset-stats {
    grid-template-columns: 1fr 1fr;
  }
}

/* ==================== Utilities ==================== */
.media-85,
.media-40 {
  margin-left: auto;
  margin-right: auto;
}

.media-85 {
  max-width: 85%;
}

.media-40 {
  max-width: 40%;
}

.text-gradient {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}