/* Modern Landing Page Styles */

/* Hero Section */
.hero-section {
  text-align: center;
  padding: 3rem 1rem 4rem;
  background: linear-gradient(135deg, #f8fafc 0%, #e2f2ff 100%);
  border-radius: 1rem;
  margin-bottom: 3rem;
  position: relative;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.hero-section h1 {
  font-size: 3rem;
  margin-bottom: 1.5rem;
  color: #154273;
  font-weight: 700;
}

.nerds-acronym {
  font-size: 0.8em;
  opacity: 0.8;
  font-weight: 600;
}

.hero-subtitle {
  font-size: 1.25rem;
  max-width: 800px;
  margin: 0 auto 2rem;
  color: #154273;
  line-height: 1.6;
}

.version-badge {
  display: inline-block;
  margin-bottom: 2rem;
  position: relative;
}

.version-label {
  font-size: 0.9rem;
  background-color: #B1D5EC;
  color: #154273;
  padding: 0.4rem 0.7rem;
  border-radius: 2rem;
  font-weight: 500;
  cursor: pointer;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  transition: all 0.2s ease;
}

.version-label:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.hover-info {
  display: none;
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  background-color: white;
  color: #333;
  border: 1px solid #eee;
  border-radius: 0.5rem;
  padding: 1rem;
  margin-top: 0.5rem;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  z-index: 1000;
  width: 300px;
  font-size: 0.9rem;
  text-align: left;
}

.version-badge:hover .hover-info {
  display: block;
}

.hero-cta {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-cta .md-button {
  font-size: 1rem;
  padding: 0.7rem 1.5rem;
  transition: all 0.2s ease;
}

.hero-cta .md-button:hover {
  transform: translateY(-2px);
}

/* Intro Section */
.intro-section {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.intro-card {
  background-color: white;
  border-radius: 1rem;
  padding: 2rem;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.intro-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.intro-card h2 {
  color: #154273;
  margin-top: 0;
  margin-bottom: 1rem;
  font-size: 1.5rem;
  border-bottom: 2px solid #B1D5EC;
  padding-bottom: 0.5rem;
}

/* Feature list */
.feature-list {
  margin-bottom: 1rem;
}

.feature-item {
  margin-bottom: 0.7rem;
  position: relative;
  padding-left: 1.5rem;
}

.feature-item:before {
  content: "✓";
  position: absolute;
  left: 0;
  color: #154273;
  font-weight: bold;
}

/* Principles Section */
.principles-section {
  margin-bottom: 3rem;
}

.principles-section h2 {
  text-align: center;
  color: #154273;
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.principles-description {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 2rem;
  font-size: 1.1rem;
  color: #555;
}

/* Styled cards for principles */
.principles-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.principle-card {
  background-color: white;
  border-radius: 1rem;
  padding: 1.5rem;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  border-left: 5px solid #B1D5EC;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.principle-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
  border-left: 10px solid #B1D5EC;
}

.principle-icon {
  margin-bottom: 1rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
}

.principle-icon svg {
  width: 2rem;
  height: 2rem;
}

.principle-card h3 {
  margin-top: 0;
  margin-bottom: 0.7rem;
  font-size: 1.2rem;
  color: #154273;
}

.principle-card h3 a {
  color: #154273;
  text-decoration: none;
}

.principle-card h3 a:hover {
  text-decoration: underline;
}

.principle-card p {
  margin: 0;
  font-size: 0.95rem;
  color: #555;
}

/* CTA Section */
.cta-section {
  background-color: #f8fafc;
  border-radius: 1rem;
  padding: 3rem 2rem;
  text-align: center;
  margin-bottom: 3rem;
  border: 1px solid #e2f2ff;
}

.cta-section h2 {
  color: #154273;
  margin-top: 0;
  margin-bottom: 1rem;
  font-size: 1.8rem;
}

.cta-section p {
  max-width: 700px;
  margin: 0 auto 2rem;
  font-size: 1.1rem;
  color: #555;
}

.cta-buttons {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.cta-buttons .md-button {
  font-size: 1rem;
  padding: 0.7rem 1.5rem;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
  .hero-section h1 {
    font-size: 2.2rem;
  }

  .hero-subtitle {
    font-size: 1.1rem;
  }

  .principles-cards {
    grid-template-columns: 1fr;
  }

  .intro-section {
    grid-template-columns: 1fr;
  }
}

/* Modern animations and transitions */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Initial state for scroll animations - always visible as fallback */
.hero-section,
.intro-section,
.principles-section,
.cta-section {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

/* Visible state triggered by JavaScript */
.hero-section.visible,
.intro-section.visible,
.principles-section.visible,
.cta-section.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Hide desktop sidebars only on landing page*/
@media screen and (min-width: 76.25em) {
  body:has(.hero-section) .md-sidebar {
    display: none !important;
  }
}

/* Basic animations for page load */
.hero-section {
  animation: fadeIn 0.6s ease-out forwards;
}

.intro-card {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeIn 0.6s ease-out forwards;
}

.intro-card:nth-child(2) {
  animation-delay: 0.2s;
}

.principle-card {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeIn 0.6s ease-out 0.3s forwards;
  animation-delay: calc(0.1s * var(--animation-order, 0) + 0.3s);
}