/* Sticky Timeline Steps Section */
.sticky-timeline-steps {
  position: relative;
  z-index: var(--z-10);
  overflow: visible;
}

/* Override global overlays - only apply when background image exists */
.sticky-timeline-steps::after {
  display: none !important;
}

/* Section background image overlay */
.sticky-timeline-steps[data-bg]::after {
  content: "";
  position: absolute;
  inset: 0;
  height: 100%;
  width: 100%;
  z-index: var(--z-0);
  background-color: rgba(0, 0, 0, 0.6);
  pointer-events: none;
  display: block !important;
}

/* Inner container */
.sticky-timeline-steps .inner-container {
  position: relative;
  z-index: var(--z-10);
}

/* Container background image overlay */
.sticky-timeline-steps .inner-container[data-bg]:after {
  content: "";
  position: absolute;
  inset: 0;
  height: 100%;
  width: 100%;
  z-index: var(--z-0);
  background-color: rgba(0, 0, 0, 0.6);
  pointer-events: none;
}

/* Ensure content stays above overlays */
.sticky-timeline-steps .inner-container > * {
  position: relative;
  z-index: var(--z-10);
}

/* Timeline Wrapper - Mobile: Stack, Desktop: Side by Side */
.sticky-timeline-steps .timeline-wrapper {
  display: flex;
  flex-direction: column;
  gap: var(--space-2xl);
  width: 100%;
}

@media (min-width: 1024px) {
  .sticky-timeline-steps .timeline-wrapper {
    flex-direction: row;
    gap: var(--space-3xl);
    align-items: flex-start;
  }
}

/* Left Column - Sticky on Desktop */
.sticky-timeline-steps .left-column-sticky {
  width: 100%;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

@media (min-width: 1024px) {
  .sticky-timeline-steps .left-column-sticky {
    position: sticky;
    /* Center vertically: top at 50vh, translate up by 50% of height */
    top: 50vh;
    transform: translateY(-50%);
    width: 45%;
    max-width: 555px;
    align-self: flex-start;
    /* Prevent transform transitions for smooth sticky behavior */
    transition-property: opacity, background-color, border-color;
  }
}

/* Left Column Typography */
.sticky-timeline-steps .left-column-sticky h1 {
  line-height: 1;
  margin-bottom: var(--space-sm);
}

@media (min-width: 1024px) {
  .sticky-timeline-steps .left-column-sticky h1 {
    line-height: 1.15;
  }
}

.sticky-timeline-steps .supporting-text {
  line-height: 1.5;
}

/* Right Column - Scrollable Timeline */
.sticky-timeline-steps .right-column-timeline {
  width: 100%;
  position: relative;
  flex-grow: 1;
}

@media (min-width: 1024px) {
  .sticky-timeline-steps .right-column-timeline {
    width: 55%;
    max-width: 576px;
  }
}

/* Timeline Main Heading */
.sticky-timeline-steps .timeline-main-heading {
  line-height: 1.2;
  margin-bottom: var(--space-xl);
}

@media (min-width: 1024px) {
  .sticky-timeline-steps .timeline-main-heading {
    margin-bottom: var(--space-2xl);
  }
}

/* Timeline Line Container */
.sticky-timeline-steps .timeline-line-container {
  position: absolute;
  left: -30px;
  top: 0;
  width: 6px;
  height: 100%;
  z-index: 1;
}

@media (min-width: 1024px) {
  .sticky-timeline-steps .timeline-line-container {
    left: -42px;
    width: 6px;
  }
}

/* Timeline Background Line */
.sticky-timeline-steps .timeline-line-bg {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  opacity: 0.3;
}

/* Timeline Fill Line - Animates on Scroll */
.sticky-timeline-steps .timeline-line-fill {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 0%;
  /* No transition - updates smoothly via JavaScript scroll handler */
  transform-origin: top;
  /* Optimize for smooth scrolling updates */
  will-change: height;
  transform: translateZ(0);
  backface-visibility: hidden;
}

/* Steps Container */
.sticky-timeline-steps .steps-container {
  display: flex;
  flex-direction: column;
  gap: var(--space-2xl);
  position: relative;
  padding-left: var(--space-xl);
}

@media (min-width: 1024px) {
  .sticky-timeline-steps .steps-container {
    gap: var(--space-3xl);
    padding-left: 0;
  }
}

/* Individual Step Item */
.sticky-timeline-steps .step-item {
  display: flex;
  gap: var(--space-lg);
  position: relative;
  /* No opacity on container - opacity is controlled by the circle itself */
  cursor: default;
}

/* Step Marker (Circle) */
.sticky-timeline-steps .step-marker {
  position: absolute;
  top: 4px;
  z-index: 2;
  flex-shrink: 0;
  /* Position marker so circle center aligns with line center */
  /* Line center: -30px (line left) + 3px (half of 6px line width) = -27px */
  /* Circle is 21px wide, so position left edge at -27px - 10.5px = -37.5px */
  left: -37.5px;
  width: 21px;
  height: 21px;
  display: flex;
  align-items: center;
  justify-content: center;
}

@media (min-width: 1024px) {
  .sticky-timeline-steps .step-marker {
    /* Line center: -42px (line left) + 3px (half of 6px line width) = -39px */
    /* Circle is 25px wide, so position left edge at -39px - 12.5px = -51.5px */
    left: -51.5px;
    width: 25px;
    height: 25px;
  }
}

/* Marker Circle */
.sticky-timeline-steps .marker-circle {
  width: 21px;
  height: 21px;
  border-radius: 50%;
  border-width: 4px;
  border-style: solid;
  /* Remove opacity from transition to prevent fade-in */
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), background-color 0.4s cubic-bezier(0.4, 0, 0.2, 1), border-color 0.4s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  transform: scale(0.4);
  /* Fully opaque - ensure background is solid to cover the line */
  opacity: 1;
  box-sizing: border-box;
  cursor: default;
  pointer-events: none;
  flex-shrink: 0;
  /* Force fully opaque background - must be above the line */
  position: relative;
  z-index: 3;
  /* Ensure background is fully opaque - utility class will provide color */
  /* Default to neutral-light if no bg- class is present */
  background-color: var(--clr-neutral-light, #f5f5f5) !important;
  /* Ensure no transparency or images */
  background-image: none !important;
  /* Force solid background */
  background-clip: padding-box;
}

/* Ensure any background utility class creates a fully opaque background */
/* Default marker circle color - neutral-light */
.sticky-timeline-steps .marker-circle:not([class*="bg-"]) {
  background-color: var(--clr-neutral-light, #f5f5f5) !important;
  opacity: 1 !important;
  background-image: none !important;
}

.sticky-timeline-steps .marker-circle.bg-white {
  background-color: var(--clr-white, #ffffff) !important;
  opacity: 1 !important;
  background-image: none !important;
}

/* For any other bg- utility class, ensure it's fully opaque */
.sticky-timeline-steps .marker-circle[class*="bg-"]:not(.bg-white) {
  opacity: 1 !important;
  background-image: none !important;
  /* The bg- utility class sets background-color via CSS variable */
  /* Keep the utility class background-color */
}

.sticky-timeline-steps .step-item.active .marker-circle {
  transform: scale(1);
  opacity: 1;
  /* More prominent visual indicator for filled circles */
  box-shadow: 0 0 0 4px rgba(0, 0, 0, 0.08), 0 2px 8px rgba(0, 0, 0, 0.15);
  /* Ensure filled circles are visually distinct */
  border-width: 5px;
}

@media (min-width: 1024px) {
  .sticky-timeline-steps .step-item.active .marker-circle {
    border-width: 6px;
    box-shadow: 0 0 0 5px rgba(0, 0, 0, 0.08), 0 3px 12px rgba(0, 0, 0, 0.15);
  }
}

@media (min-width: 1024px) {
  .sticky-timeline-steps .marker-circle {
    width: 25px;
    height: 25px;
    border-width: 5px;
  }
}

@media (min-width: 1024px) {
  .sticky-timeline-steps .marker-circle {
    width: 24px;
    height: 24px;
    border-width: 5px;
  }
}

/* Step Content */
.sticky-timeline-steps .step-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  flex-grow: 1;
}

/* Step Title */
.sticky-timeline-steps .step-content h3 {
  line-height: 1.2;
  margin: 0;
}

/* Step Description */
.sticky-timeline-steps .step-content > div {
  line-height: 1.5;
}

/* Mobile Adjustments */
@media (max-width: 1023px) {
  /* Ensure left column appears above timeline (not to the left) */
  .sticky-timeline-steps .left-column-sticky {
    position: relative !important;
    top: 0 !important;
    transform: none !important;
    margin-bottom: var(--space-xl);
    width: 100%;
  }
  
  /* Show timeline line and position it left-aligned */
  .sticky-timeline-steps .timeline-line-container {
    display: block;
    left: 0;
    width: 6px;
  }
  
  /* Adjust steps container to accommodate left-aligned timeline */
  .sticky-timeline-steps .steps-container {
    padding-left: calc(var(--space-xl) + var(--space-md));
  }
  
  /* Position step markers left-aligned with timeline line */
  /* Account for steps-container padding-left */
  .sticky-timeline-steps .step-marker {
    position: absolute;
    /* Line is at left: 0 relative to right-column-timeline */
    /* Steps-container has padding-left, so circles need to account for that */
    /* Line center: 0 + 3px (half of 6px) = 3px */
    /* Circle is 21px wide, center on line: 3px - 10.5px = -7.5px */
    /* But steps-container padding pushes content right, so subtract padding */
    /* Move a bit more left for better overlap */
    left: calc(-1 * var(--space-xl, 32px) - 1 * var(--space-md, 16px) - 10px);
    top: 4px;
  }
  
  /* Push timeline heading to the right to match step content spacing */
  .sticky-timeline-steps .timeline-main-heading {
    text-align: left;
    padding-left: calc(var(--space-xl) + var(--space-md));
  }
  
  /* Left justify all text on mobile */
  .sticky-timeline-steps .step-content {
    text-align: left;
  }
  
  .sticky-timeline-steps .step-content h3 {
    text-align: left;
  }
  
  .sticky-timeline-steps .step-content > div {
    text-align: left;
  }
  
  .sticky-timeline-steps .step-item {
    flex-direction: row;
    gap: var(--space-lg);
    padding-left: 0;
  }
}

/* Smooth Transitions */
.sticky-timeline-steps * {
  transition-property: opacity, transform, background-color, border-color;
  transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
}

/* Exclude step markers from opacity transitions - must come after global rule */
.sticky-timeline-steps .step-marker,
.sticky-timeline-steps .step-marker *,
.sticky-timeline-steps .marker-circle {
  transition-property: transform, background-color, border-color, box-shadow !important;
  transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
  opacity: 1 !important;
}

/* Focus States for Accessibility */
.sticky-timeline-steps .step-item:focus {
  outline: 2px solid var(--clr-primary);
  outline-offset: 4px;
}

.sticky-timeline-steps .step-item:focus:not(:focus-visible) {
  outline: none;
}