/**
 * Slider Nav Button - Core Styles
 * Pill-shaped navigation with divider-to-hover slide animation
 */

.snb {
  /* CSS Custom Properties for customization */
  --snb-bg: transparent;
  --snb-hover-bg: #f7f7f7;
  --snb-border-color: #f2f2f2;
  --snb-icon-color: #17181A;
  --snb-divider-color: var(--snb-border-color);
  --snb-radius: 9999px;
  --snb-height: 36px;
  --snb-width: 90px;
  --snb-transition-duration: 0.28s;
  --snb-transition-easing: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --snb-hover-padding: 2px;
  --snb-icon-size: 18px;

  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--snb-width);
  height: var(--snb-height);
  border-radius: var(--snb-radius);
  border: 1px solid var(--snb-border-color);
  background: var(--snb-bg);
  cursor: pointer;
  overflow: hidden;
}

/* Hover background panels - slide from divider */
.snb-left-bg,
.snb-right-bg {
  position: absolute;
  top: var(--snb-hover-padding);
  bottom: var(--snb-hover-padding);
  background: var(--snb-hover-bg);
  border-radius: var(--snb-radius);
  transform: scaleX(0);
  transition: transform var(--snb-transition-duration) var(--snb-transition-easing);
  pointer-events: none;
  z-index: 0;
}

.snb-left-bg {
  left: var(--snb-hover-padding);
  right: calc(50% + 0.5px);
  transform-origin: right center;
  border-radius: var(--snb-radius);
}

.snb-right-bg {
  right: var(--snb-hover-padding);
  left: calc(50% + 0.5px);
  transform-origin: left center;
  border-radius: var(--snb-radius);
}

/* Expand from divider when hovering respective side (Vanilla JS - legacy, unused when snb-js) */
.snb:not(.snb-motion):not(.snb-js):has(.snb-left:hover) .snb-left-bg {
  transform: scaleX(1);
}

.snb:not(.snb-motion):not(.snb-js):has(.snb-right:hover) .snb-right-bg {
  transform: scaleX(1);
}

/* Vanilla JS - single pill: slides via translateX, all states use right center origin
   so both exits shrink toward the divider and cross-side slides are smooth */
.snb-js .snb-js-slide-bg {
  position: absolute;
  top: var(--snb-hover-padding);
  bottom: var(--snb-hover-padding);
  left: var(--snb-hover-padding);
  right: 50%;
  background: var(--snb-hover-bg);
  border-radius: var(--snb-radius);
  pointer-events: none;
  z-index: 0;
  transform: scaleX(0) translateX(0);
  transform-origin: right center;
  transition: transform var(--snb-transition-duration) var(--snb-transition-easing);
}

.snb-js.snb-enter-right-prep .snb-js-slide-bg {
  transform: scaleX(0) translateX(100%);
  transition: none;
}

.snb-js.snb-hover-left .snb-js-slide-bg {
  transform: scaleX(1) translateX(0);
}

.snb-js.snb-hover-right .snb-js-slide-bg {
  transform: scaleX(1) translateX(100%);
}

.snb-js.snb-exit-from-left .snb-js-slide-bg {
  transform: scaleX(0) translateX(0);
}

.snb-js.snb-exit-from-right .snb-js-slide-bg {
  transform: scaleX(0) translateX(100%);
}

.snb-js.snb-hover-left .snb-divider,
.snb-js.snb-hover-right .snb-divider,
.snb-js.snb-enter-right-prep .snb-divider {
  opacity: 0;
}

/* Framer Motion controls these - disable CSS transition */
.snb.snb-motion .snb-left-bg,
.snb.snb-motion .snb-right-bg {
  transition: none;
}

/* Framer Motion - single pill with right center origin */
.snb.snb-motion .snb-motion-slide-bg {
  position: absolute;
  top: var(--snb-hover-padding);
  bottom: var(--snb-hover-padding);
  left: var(--snb-hover-padding);
  right: 50%;
  background: var(--snb-hover-bg);
  border-radius: var(--snb-radius);
  pointer-events: none;
  z-index: 0;
  transform-origin: right center;
}

/* Button wrappers */
.snb-left,
.snb-right {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 1;
  height: 100%;
  border: none;
  background: none;
  cursor: pointer;
  color: var(--snb-icon-color);
  padding: 0;
  transition: color var(--snb-transition-duration) var(--snb-transition-easing);
  z-index: 1;
}

.snb-left:hover,
.snb-right:hover {
  color: var(--snb-icon-color);
}

/* Divider - hidden when hovering either side */
.snb-divider {
  width: 1px;
  height: 60%;
  min-height: 16px;
  background: var(--snb-divider-color);
  flex-shrink: 0;
  opacity: 1;
  transition: opacity var(--snb-transition-duration) var(--snb-transition-easing);
}

.snb:not(.snb-motion):has(.snb-left:hover) .snb-divider,
.snb:not(.snb-motion):has(.snb-right:hover) .snb-divider {
  opacity: 0;
}

.snb.snb-motion .snb-divider {
  transition: none;
}

/* Arrow icon container */
.snb-icon {
  width: var(--snb-icon-size);
  height: var(--snb-icon-size);
  display: block;
}

.snb-icon svg {
  width: 100%;
  height: 100%;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}