:root {
  --google-blue: #4285f4;
  --google-red: #ea4335;
  --google-yellow: #fbbc05;
  --google-green: #34a853;
  --text-primary: #202124;
  --text-secondary: #5f6368;
  --surface: #ffffff;
  --background: #f8f9fa;
  --shadow-1: 0 1px 2px 0 rgba(60, 64, 67, 0.3), 0 1px 3px 1px rgba(60, 64, 67, 0.15);
  --shadow-2: 0 1px 3px 0 rgba(60, 64, 67, 0.3), 0 4px 8px 3px rgba(60, 64, 67, 0.15);
  --transition-standard: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Roboto', sans-serif;
  margin: 0;
  padding: 0;
  background-color: var(--background);
  color: var(--text-primary);
  overflow-x: hidden;
}

#animation-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  opacity: 0.1;
}

header {
  background-color: var(--google-blue);
  color: white;
  padding: 4rem 1rem;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-1);
}

header:after {
  content: '';
  position: absolute;
  bottom: -50px;
  left: 0;
  width: 100%;
  height: 100px;
  background-color: var(--google-blue);
  transform: skewY(-3deg);
  z-index: -1;
}

header h1 {
  font-family: 'Google Sans', sans-serif;
  font-weight: 500;
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

.tagline {
  font-weight: 300;
  font-size: 1.2rem;
  opacity: 0.9;
}

/* Modern Navigation */
.material-nav {
  background-color: white;
  padding: 0.8rem 1.5rem;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-1);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
}

/* Improved logo image handling */
.logo img {
  height: 24px;
  width: auto;
  object-fit: contain;
}

.material-nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  gap: 0.5rem;
}

.material-nav a {
  text-decoration: none;
  color: var(--text-secondary);
  font-family: 'Google Sans', sans-serif;
  font-weight: 500;
  padding: 0.7rem 1rem;
  border-radius: 4px;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition-standard);
}

.material-nav a:hover {
  background-color: rgba(66, 133, 244, 0.08);
  color: var(--google-blue);
}

.material-nav a.active {
  color: var(--google-blue);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-secondary);
  padding: 8px;
  border-radius: 50%;
}

.mobile-menu-btn:hover {
  background-color: rgba(0, 0, 0, 0.05);
}

main {
  padding: 2rem 1rem;
  max-width: 1000px;
  margin: auto;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

/* Card Styling */
.card-elevation {
  background-color: var(--surface);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card-elevation:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-2);
}

.section-content {
  padding: 2rem;
}

h2, h3 {
  font-family: 'Google Sans', sans-serif;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

h2 {
  font-size: 2rem;
  font-weight: 500;
}

h3 {
  font-size: 1.5rem;
  font-weight: 500;
}

p {
  line-height: 1.6;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

/* Material Button */
.material-button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: var(--google-blue);
  color: white;
  padding: 0.8rem 1.5rem;
  text-decoration: none;
  border-radius: 4px;
  font-family: 'Google Sans', sans-serif;
  font-weight: 500;
  font-size: 1rem;
  transition: background-color 0.2s ease, transform 0.2s ease;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.material-button:hover {
  background-color: #3367d6;
  transform: translateY(-1px);
}

.material-button:active {
  transform: translateY(0);
}

/* GDG Colors Animation */
.gdg-colors {
  display: flex;
  gap: 10px;
  margin-bottom: 1.5rem;
}

.color-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

.blue { 
  background-color: var(--google-blue); 
  animation-delay: 0s;
}

.red { 
  background-color: var(--google-red); 
  animation-delay: 0.5s;
}

.yellow { 
  background-color: var(--google-yellow); 
  animation-delay: 1s;
}

.green { 
  background-color: var(--google-green); 
  animation-delay: 1.5s;
}

@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.5); }
  100% { transform: scale(1); }
}

/* Tech Icons - Improved Image Handling */
.tech-icons {
  display: flex;
  gap: 20px;
  justify-content: center;
  margin-top: 2rem;
  flex-wrap: wrap;
}

.tech-icon {
  width: 120px;
  height: 50px;
  transition: transform 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.tech-icon:hover {
  transform: translateY(-5px);
}

.tech-icon img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
}

/* Event Cards */
.event-cards {
  display: grid;
  gap: 1rem;
}

.event-card {
  background-color: #fff;
  border-left: 4px solid var(--google-blue);
  padding: 1rem;
  border-radius: 4px;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
  transition: var(--transition-standard);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.event-card:hover {
  box-shadow: var(--shadow-1);
}

.event-card.red { border-left-color: var(--google-red); }
.event-card.yellow { border-left-color: var(--google-yellow); }
.event-card.green { border-left-color: var(--google-green); }

.event-title {
  font-weight: 500;
  color: var(--text-primary);
}

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

/* Event image handling */
.event-image {
  width: 60px;
  height: 60px;
  margin-right: 1rem;
  border-radius: 4px;
  overflow: hidden;
  flex-shrink: 0;
}

.event-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

/* See More Link */
.see-more {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 1.5rem;
  color: var(--google-blue);
  text-decoration: none;
  font-family: 'Google Sans', sans-serif;
  font-weight: 500;
  font-size: 1rem;
  transition: gap 0.3s ease;
}

.see-more:hover {
  gap: 8px;
}

/* Footer */
footer {
  background-color: #f1f3f4;
  padding: 2rem 1rem;
  margin-top: 4rem;
}

.footer-content {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.social-links {
  display: flex;
  gap: 1rem;
}

.social-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  color: var(--text-secondary);
  background-color: white;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
  transition: var(--transition-standard);
}

.social-icon:hover {
  background-color: var(--google-blue);
  color: white;
  transform: translateY(-2px);
}

/* Animations */
.animate-in {
  opacity: 0;
  transform: translateY(30px);
}

/* Image Standards */
.standard-img-container {
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.standard-img {
  width: 100%;
  height: 100%;
  object-fit: cover; /* This ensures images cover their containers properly */
}

.contain-img {
  object-fit: contain; /* For logos and icons that should maintain proportions */
}

.square-img-container {
  position: relative;
  width: 100%;
  padding-bottom: 100%; /* Creates a square aspect ratio */
}

.square-img-container img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Aspect ratio containers for consistent image display */
.aspect-ratio-16-9 {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 aspect ratio */
  overflow: hidden;
}

.aspect-ratio-16-9 img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Responsive Design */
@media (max-width: 768px) {
  header h1 {
    font-size: 1.8rem;
  }

  .material-nav ul {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background-color: white;
    box-shadow: var(--shadow-1);
    padding: 1rem 0;
  }

  .material-nav ul.active {
    display: flex;
  }

  .material-nav a {
    padding: 0.8rem 2rem;
    border-radius: 0;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .footer-content {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
  
  .tech-icon {
    width: 100px;
    height: 40px;
  }
}

@media (max-width: 480px) {
  .tech-icons {
    flex-direction: column;
    align-items: center;
  }
  
  .section-content {
    padding: 1.5rem;
  }
  
  .tech-icon {
    width: 80px;
    height: 35px;
  }
}

/* Event Cards */
.event-cards {
  display: grid;
  gap: 1.5rem;
  margin-bottom: 1rem;
}

.event-card {
  background-color: #fff;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
}

.event-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-2);
}

.event-card.blue { border-top: 4px solid var(--google-blue); }
.event-card.red { border-top: 4px solid var(--google-red); }
.event-card.yellow { border-top: 4px solid var(--google-yellow); }
.event-card.green { border-top: 4px solid var(--google-green); }

.event-image {
  width: 100%;
  height: 160px;
  overflow: hidden;
  background-color: #f1f3f4;
}

.event-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.event-card:hover .event-image img {
  transform: scale(1.05);
}

.event-content {
  padding: 1.2rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.event-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.8rem;
}

.event-tag {
  background-color: #f1f3f4;
  color: var(--text-secondary);
  font-size: 0.75rem;
  padding: 0.3rem 0.7rem;
  border-radius: 16px;
  text-transform: capitalize;
}

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

.event-title {
  font-family: 'Google Sans', sans-serif;
  font-weight: 500;
  font-size: 1.1rem;
  color: var(--text-primary);
  margin-bottom: 0.8rem;
  line-height: 1.4;
}

.event-location {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 1rem;
  margin-top: auto;
}

.event-location .material-symbols-outlined {
  font-size: 1rem;
  color: var(--google-red);
}

.event-details-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: 'Google Sans', sans-serif;
  font-size: 0.9rem;
  color: var(--google-blue);
  text-decoration: none;
  margin-top: auto;
  font-weight: 500;
  transition: gap 0.3s ease;
}

.event-details-link:hover {
  gap: 10px;
}

.event-details-link .material-symbols-outlined {
  font-size: 1rem;
}

/* Loading state */
.event-loading {
  text-align: center;
  padding: 2rem;
  color: var(--text-secondary);
  grid-column: 1 / -1;
}

.loading-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
  animation: pulse 1.5s infinite;
}

.no-events, .error-message {
  text-align: center;
  padding: 2rem;
  color: var(--text-secondary);
  grid-column: 1 / -1;
}

/* Media queries */
@media (min-width: 768px) {
  .event-cards {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  }
}