/* Side-by-side layout and section bubbles */

/* Animation for section bubbles */
@keyframes section-bubble-in {
  0% { 
    opacity: 0;
    transform: translateY(30px) scale(0.95);
  }
  100% { 
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* Container for side-by-side sections */
.side-by-side-container {
  display: flex;
  flex-wrap: wrap;
  gap: 2.5rem;
  margin: 0 auto;
  justify-content: center;
  max-width: 1600px; /* Control maximum width for better readability on large screens */
  padding: 0 1rem;
}

/* Section bubbles */
.section-bubble {
  flex: 1 1 45%;
  min-width: 300px;
  max-width: 800px;
  background-color: var(--bg-alt-color);
  
  background-attachment: fixed;
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 2rem;
  margin-bottom: 2rem;
  position: relative;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
  transition: all 0.3s ease;
  overflow: hidden;
  opacity: 0;
  transform: translateY(30px);
}

.section-bubble.visible {
  animation: section-bubble-in 0.8s forwards ease-out;
}

.section-bubble:before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border: 1px solid rgba(255, 255, 255, 0.05);
  pointer-events: none;
  border-radius: 9px;
  z-index: 1;
}

/* Add corner accent to section bubbles */
.section-bubble:after {
  content: '';
  position: absolute;
  width: 40px;
  height: 40px;
  top: 0;
  right: 0;
  background: linear-gradient(135deg, transparent 50%, var(--highlight-color) 50%);
  z-index: 2;
  transition: all 0.3s ease;
  border-top-right-radius: 9px;
}

.section-bubble:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
  border-color: var(--highlight-color);
}

.section-bubble:hover:after {
  background: linear-gradient(135deg, transparent 50%, var(--highlight-bright) 50%);
  width: 45px;
  height: 45px;
}

.section-bubble .section-heading {
  margin-top: 0;
}

/* Adjust timeline container for bubbles */
.section-bubble .timeline-container {
  margin-top: 2rem;
  margin-bottom: 0;
  padding: 0 0 0 3rem;
  position: relative;
  z-index: 3; /* Ensure timeline is above background pattern */
}

.section-bubble .timeline-container::before {
  left: 1rem;
  background: linear-gradient(to bottom, 
    var(--border-color) 0%,
    var(--highlight-color) 50%,
    var(--border-color) 100%);
}

.section-bubble .timeline-item::before {
  left: -18px;
  background-color: var(--highlight-color);
  /* Add subtle glow effect */
  animation: gentle-pulse 2s infinite alternate;
}

@keyframes gentle-pulse {
  from { box-shadow: 0 0 5px rgba(93, 157, 246, 0.3); }
  to { box-shadow: 0 0 12px rgba(93, 157, 246, 0.6); }
}

.section-bubble .timeline-item.visible::before {
  animation: 
    gentle-pulse 2s infinite alternate,
    timeline-dot-appear 0.5s forwards;
}

@keyframes timeline-dot-appear {
  from { transform: scale(0); }
  to { transform: scale(1); }
}

.section-bubble .timeline-item::after {
  left: -10px;
  width: 1.5rem;
}

.section-bubble .timeline-item {
  padding-left: 1.5rem;
}

/* Responsive adjustments */
@media screen and (max-width: 1200px) {
  .side-by-side-container {
    max-width: 100%;
    padding: 0 1.5rem;
  }
  
  .section-bubble {
    flex: 1 1 46%;
  }
}

@media screen and (max-width: 980px) {
  .section-bubble {
    flex: 1 1 100%;
    max-width: 100%;
  }
  
  .side-by-side-container {
    gap: 2rem;
  }
}

@media screen and (max-width: 736px) {
  .section-bubble {
    padding: 1.5rem;
    margin-bottom: 1.5rem;
  }
  
  .section-bubble .timeline-container {
    padding: 0 0 0 2.5rem;
  }
  
  .section-bubble .timeline-container::before {
    left: 0.8rem;
  }
  
  .section-bubble .timeline-item::before {
    left: -15px;
  }
  
  .section-bubble .timeline-item::after {
    width: 1rem;
    left: -8px;
  }
  
  .section-bubble:after {
    width: 30px;
    height: 30px;
  }
}

@media screen and (max-width: 480px) {
  .section-bubble {
    padding: 1.2rem;
    border-radius: 8px;
  }
  
  .section-bubble .section-heading {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
  }
  
  .section-bubble .timeline-container {
    padding: 0 0 0 2rem;
    margin-top: 1.5rem;
  }
  
  .section-bubble .timeline-item {
    margin-bottom: 2rem;
  }
  
  .side-by-side-container {
    padding: 0 0.5rem;
  }
}