/* SpaRRTa - Custom Dark Scientific Theme */
/* Color Palette: Deep Purple & Indigo with Scientific Feel */

/* ==================== HEADER LOGO ==================== */
.md-header__button.md-logo img,
.md-header__button.md-logo svg {
  height: 2rem;
  width: auto;
}

.md-nav__button.md-logo img,
.md-nav__button.md-logo svg {
  height: 2.5rem;
  width: auto;
}

:root {
  /* Primary Colors */
  --sparrta-primary: #7c4dff;
  --sparrta-primary-light: #b47cff;
  --sparrta-primary-dark: #3f1dcb;
  --sparrta-accent: #536dfe;
  --sparrta-accent-light: #8f9bff;
  --sparrta-accent-dark: #0043ca;
  
  /* Background Gradients */
  --sparrta-bg-gradient: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
  --sparrta-card-bg: rgba(30, 30, 50, 0.8);
  --sparrta-glass: rgba(124, 77, 255, 0.1);
  
  /* Text Colors */
  --sparrta-text-primary: #e8eaed;
  --sparrta-text-secondary: #9aa0a6;
  --sparrta-text-accent: #b47cff;
  
  /* Shadows */
  --sparrta-shadow: 0 8px 32px rgba(124, 77, 255, 0.15);
  --sparrta-glow: 0 0 20px rgba(124, 77, 255, 0.3);
}

/* ==================== ANNOUNCEMENT BANNER ==================== */
.md-banner {
  background: linear-gradient(90deg, var(--sparrta-primary-dark), var(--sparrta-accent-dark));
  color: white;
  font-weight: 500;
}

.md-banner a {
  color: var(--sparrta-accent-light);
}

/* ==================== HERO SECTION ==================== */
.hero-section {
  position: relative;
  padding: 4rem 2rem;
  margin: -1rem -1rem 2rem -1rem;
  background: var(--sparrta-bg-gradient);
  border-radius: 0 0 2rem 2rem;
  overflow: hidden;
  text-align: center;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 80%, rgba(124, 77, 255, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(83, 109, 254, 0.15) 0%, transparent 50%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, #fff 0%, var(--sparrta-accent-light) 50%, var(--sparrta-primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.5rem;
  animation: fadeInUp 0.8s ease-out;
}

.hero-subtitle {
  font-size: 1.3rem;
  color: var(--sparrta-text-secondary);
  margin-bottom: 1.5rem;
  animation: fadeInUp 0.8s ease-out 0.1s both;
}

.hero-badges {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
  animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-badges img {
  height: 24px;
  transition: transform 0.3s ease;
}

.hero-badges img:hover {
  transform: translateY(-2px);
}

.hero-buttons {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
  animation: fadeInUp 0.8s ease-out 0.3s both;
}

.hero-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 1.75rem;
  border-radius: 2rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
}

.hero-btn-primary {
  background: linear-gradient(135deg, var(--sparrta-primary), var(--sparrta-accent));
  color: white;
  box-shadow: var(--sparrta-shadow);
}

.hero-btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--sparrta-glow);
  color: white;
}

.hero-btn-secondary {
  background: var(--sparrta-glass);
  color: var(--sparrta-text-primary);
  border: 1px solid rgba(124, 77, 255, 0.3);
  backdrop-filter: blur(10px);
}

.hero-btn-secondary:hover {
  background: rgba(124, 77, 255, 0.2);
  border-color: var(--sparrta-primary);
  color: white;
}

/* ==================== TEASER IMAGE ==================== */
.teaser-container {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  animation: fadeInUp 0.8s ease-out 0.4s both;
}

.teaser-image {
  width: 100%;
  border-radius: 1rem;
  box-shadow: var(--sparrta-shadow);
  transition: transform 0.5s ease;
}

.teaser-container:hover .teaser-image {
  transform: scale(1.02);
}

.teaser-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 80%;
  height: 80%;
  background: radial-gradient(ellipse, rgba(124, 77, 255, 0.2) 0%, transparent 70%);
  pointer-events: none;
  animation: pulse 4s ease-in-out infinite;
}

/* ==================== FEATURE CARDS ==================== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.feature-card {
  background: var(--sparrta-card-bg);
  border: 1px solid rgba(124, 77, 255, 0.2);
  border-radius: 1rem;
  padding: 1.5rem;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--sparrta-primary);
  box-shadow: var(--sparrta-shadow);
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--sparrta-text-primary);
  margin-bottom: 0.5rem;
}

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

/* ==================== AUTHOR CARDS ==================== */
.authors-section {
  margin: 3rem 0;
}

.authors-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.author-card {
  text-align: center;
  padding: 1.5rem;
  background: var(--sparrta-card-bg);
  border-radius: 1rem;
  border: 1px solid rgba(124, 77, 255, 0.15);
  transition: all 0.3s ease;
}

.author-card:hover {
  transform: translateY(-4px);
  border-color: var(--sparrta-primary);
}

.author-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  margin-bottom: 1rem;
  border: 3px solid var(--sparrta-primary);
  object-fit: cover;
}

.author-name {
  font-weight: 600;
  color: var(--sparrta-text-primary);
  margin-bottom: 0.25rem;
}

.author-affiliation {
  font-size: 0.85rem;
  color: var(--sparrta-text-secondary);
}

.author-links {
  margin-top: 0.75rem;
}

.author-links a {
  color: var(--sparrta-accent-light);
  margin: 0 0.5rem;
  font-size: 1.1rem;
  transition: color 0.3s ease;
}

.author-links a:hover {
  color: var(--sparrta-primary-light);
}

/* ==================== AFFILIATIONS ==================== */
.affiliations {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 3rem;
  flex-wrap: nowrap;
  margin: 2rem auto;
  padding: 2rem 3rem;
  background: var(--sparrta-card-bg);
  border-radius: 1rem;
  max-width: 900px;
}

.affiliation-logo {
  height: 110px;
  width: auto;
  max-width: 300px;
  object-fit: contain;
  opacity: 0.9;
  transition: all 0.3s ease;
  filter: grayscale(20%);
}

.affiliation-logo:hover {
  opacity: 1;
  filter: grayscale(0%);
  transform: scale(1.05);
}

@media (max-width: 900px) {
  .affiliations {
    flex-wrap: wrap;
    gap: 2rem;
  }
  
  .affiliation-logo {
    height: 80px;
    max-width: 220px;
  }
}

/* ==================== CITATION BOX ==================== */
.citation-box {
  background: var(--sparrta-card-bg);
  border: 1px solid rgba(124, 77, 255, 0.2);
  border-radius: 1rem;
  padding: 1.5rem;
  margin: 2rem 0;
  position: relative;
}

.citation-box pre {
  margin: 0;
  padding: 1rem;
  background: rgba(0, 0, 0, 0.3);
  border-radius: 0.5rem;
  overflow-x: auto;
  font-size: 0.85rem;
}

.citation-copy-btn {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: var(--sparrta-primary);
  color: white;
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  cursor: pointer;
  font-size: 0.85rem;
  transition: all 0.3s ease;
}

.citation-copy-btn:hover {
  background: var(--sparrta-primary-light);
}

/* ==================== RESULTS TABLES ==================== */
.results-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.9rem;
}

.results-table th {
  background: linear-gradient(135deg, var(--sparrta-primary-dark), var(--sparrta-accent-dark));
  color: white;
  padding: 1rem;
  text-align: left;
  font-weight: 600;
}

.results-table td {
  padding: 0.875rem 1rem;
  border-bottom: 1px solid rgba(124, 77, 255, 0.1);
}

.results-table tr:hover {
  background: var(--sparrta-glass);
}

.results-table .best {
  color: #4caf50;
  font-weight: 700;
}

.results-table .second {
  color: var(--sparrta-accent-light);
  font-weight: 600;
}

/* ==================== ENVIRONMENT COLOR-CODED TABLE ==================== */
.env-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.9rem;
  border-radius: 0.75rem;
  overflow: hidden;
}

.env-table th {
  background: linear-gradient(135deg, var(--sparrta-primary-dark), var(--sparrta-accent-dark));
  color: white;
  padding: 1rem;
  text-align: left;
  font-weight: 600;
}

.env-table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

/* Environment color coding */
.env-bridge {
  background: rgba(139, 69, 19, 0.25);
  border-left: 4px solid #8B4513;
}

.env-city {
  background: rgba(70, 130, 180, 0.25);
  border-left: 4px solid #4682B4;
}

.env-desert {
  background: rgba(210, 180, 140, 0.25);
  border-left: 4px solid #D2B48C;
}

.env-forest {
  background: rgba(34, 139, 34, 0.25);
  border-left: 4px solid #228B22;
}

.env-winter {
  background: rgba(176, 224, 230, 0.25);
  border-left: 4px solid #B0E0E6;
}

.env-table tr:hover {
  filter: brightness(1.1);
}

/* ==================== ENVIRONMENT GALLERY ==================== */
.env-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.env-card {
  position: relative;
  border-radius: 1rem;
  overflow: hidden;
  aspect-ratio: 16/10;
  cursor: pointer;
  transition: transform 0.3s ease;
}

.env-card:hover {
  transform: scale(1.03);
}

.env-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.env-card-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1rem;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
  color: white;
}

.env-card-title {
  font-weight: 600;
  font-size: 1.1rem;
}

/* ==================== TABS STYLING ==================== */
.md-typeset .tabbed-labels {
  border-bottom-color: rgba(124, 77, 255, 0.3);
}

.md-typeset .tabbed-labels > label {
  color: var(--sparrta-text-secondary);
}

.md-typeset .tabbed-labels > label:hover {
  color: var(--sparrta-primary-light);
}

.md-typeset .tabbed-labels > label.tabbed-control--active {
  color: var(--sparrta-primary);
  border-color: var(--sparrta-primary);
}

/* ==================== ADMONITIONS ==================== */
.md-typeset .admonition,
.md-typeset details {
  border-radius: 0.75rem;
  border: none;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.md-typeset .admonition.note,
.md-typeset details.note {
  border-left: 4px solid var(--sparrta-accent);
}

.md-typeset .admonition.tip,
.md-typeset details.tip {
  border-left: 4px solid #4caf50;
}

.md-typeset .admonition.warning,
.md-typeset details.warning {
  border-left: 4px solid #ff9800;
}

/* ==================== CODE BLOCKS ==================== */
.md-typeset pre > code {
  border-radius: 0.75rem;
}

.md-typeset .highlight {
  border-radius: 0.75rem;
}

/* ==================== ANIMATIONS ==================== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 0.5;
  }
  50% {
    opacity: 0.8;
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 768px) {
  .hero-title {
    font-size: 2.5rem;
  }
  
  .hero-subtitle {
    font-size: 1.1rem;
  }
  
  .hero-section {
    padding: 2rem 1rem;
  }
  
  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .hero-btn {
    width: 100%;
    max-width: 280px;
    justify-content: center;
  }
  
  .affiliations {
    gap: 1.5rem;
  }
}

/* ==================== SCROLLBAR ==================== */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.1);
}

::-webkit-scrollbar-thumb {
  background: var(--sparrta-primary);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--sparrta-primary-light);
}

/* ==================== COMPARISON SECTION ==================== */
.comparison-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin: 2rem 0;
}

@media (max-width: 768px) {
  .comparison-container {
    grid-template-columns: 1fr;
  }
}

.comparison-panel {
  background: var(--sparrta-card-bg);
  border-radius: 1rem;
  padding: 1.5rem;
  border: 1px solid rgba(124, 77, 255, 0.2);
}

.comparison-panel h4 {
  color: var(--sparrta-primary-light);
  margin-top: 0;
}

/* ==================== VIDEO CONTAINER ==================== */
.video-container {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  border-radius: 1rem;
  margin: 2rem 0;
  box-shadow: var(--sparrta-shadow);
}

.video-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

/* ==================== STAT CARDS ==================== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1rem;
  margin: 2rem 0;
}

.stat-card {
  text-align: center;
  padding: 1.5rem;
  background: var(--sparrta-card-bg);
  border-radius: 1rem;
  border: 1px solid rgba(124, 77, 255, 0.2);
}

.stat-value {
  font-size: 2.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--sparrta-primary-light), var(--sparrta-accent-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  color: var(--sparrta-text-secondary);
  font-size: 0.9rem;
  margin-top: 0.5rem;
}