/**
 * LineSidebar — React Bits (vanilla port)
 * Gold-tuned for Fargah quick-intro rail.
 */

.line-sidebar {
  --accent-color: #eab308;
  --text-color: #c4c4c4;
  --marker-color: #6c6c6c;
  --marker-length: 55px;
  --marker-gap: 0px;
  --tick-scale: 0.5;
  --max-shift: 29px;
  --item-gap: 15px;
  --font-size: 0.95rem;
  --smoothing: 100ms;

  position: relative;
  display: flex;
  justify-content: flex-start;
  width: 100%;
}

.line-sidebar--markers {
  padding-left: calc(var(--marker-length) + var(--marker-gap));
}

.line-sidebar__list {
  list-style: none;
  margin: 0;
  padding: 0.65rem 0;
  display: flex;
  flex-direction: column;
  gap: var(--item-gap);
  width: 100%;
}

.line-sidebar__item {
  position: relative;
  cursor: pointer;
}

.line-sidebar__item::before {
  content: "";
  position: absolute;
  inset: -6px -48px;
}

.line-sidebar__label {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  font-size: var(--font-size);
  line-height: 1.2;
  font-weight: 800;
  color: color-mix(in srgb, var(--accent-color) calc(var(--effect, 0) * 100%), var(--text-color));
  transform: translateX(calc(var(--effect, 0) * var(--max-shift)));
  will-change: transform, color;
}

.line-sidebar__index {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  margin-right: 0.55rem;
  font-size: 0.85em;
  opacity: calc(0.55 + var(--effect, 0) * 0.45);
  letter-spacing: 0.04em;
}

.line-sidebar__text {
  white-space: nowrap;
}

.line-sidebar__marker {
  position: absolute;
  top: 50%;
  left: calc(-1 * var(--marker-length) - var(--marker-gap));
  height: 1px;
  width: var(--marker-length);
  background-color: color-mix(in srgb, var(--accent-color) calc(var(--effect, 0) * 100%), var(--marker-color));
  transform-origin: left center;
  transform: translateY(-50%) scaleX(calc(0.7 + var(--effect, 0) * 0.5));
  pointer-events: none;
}

.line-sidebar--markers .line-sidebar__item:not(:last-child)::after {
  content: "";
  position: absolute;
  top: calc(100% + var(--item-gap) / 2);
  left: calc(-1 * var(--marker-length) - var(--marker-gap));
  height: 1px;
  width: calc(var(--marker-length) * var(--tick-scale));
  background-color: var(--marker-color);
  opacity: 0.5;
  transform: translateY(-50%);
  pointer-events: none;
}

.line-sidebar--scale-tick .line-sidebar__item:not(:last-child)::after {
  transform-origin: left center;
  transform: translateY(-50%) scaleX(calc(0.7 + var(--effect, 0) * 0.6));
}

/* Active item is also forced via JS --effect floor */
.line-sidebar__item[aria-current="true"] .line-sidebar__label {
  font-weight: 900;
}

/* RTL (Persian / Arabic) — markers on the right, shift inward */
[dir="rtl"] .line-sidebar--markers {
  padding-left: 0;
  padding-right: calc(var(--marker-length) + var(--marker-gap));
}

[dir="rtl"] .line-sidebar__label {
  transform: translateX(calc(var(--effect, 0) * var(--max-shift) * -1));
}

[dir="rtl"] .line-sidebar__index {
  margin-right: 0;
  margin-left: 0.55rem;
}

[dir="rtl"] .line-sidebar__marker {
  left: auto;
  right: calc(-1 * var(--marker-length) - var(--marker-gap));
  transform-origin: right center;
}

[dir="rtl"] .line-sidebar--markers .line-sidebar__item:not(:last-child)::after {
  left: auto;
  right: calc(-1 * var(--marker-length) - var(--marker-gap));
  transform-origin: right center;
}

/* Fargah shell: fixed rail hosting LineSidebar */
.quick-intro-side-rail {
  width: min(248px, calc(100vw - 24px));
  padding: 12px 14px 12px 10px;
  overflow: visible;
  z-index: 120;
  pointer-events: auto;
}

.quick-intro-side-rail .line-sidebar {
  --accent-color: #eab308;
  --text-color: rgba(196, 196, 196, 0.92);
  --marker-color: rgba(108, 108, 108, 0.9);
  --font-size: 0.9rem;
  --item-gap: 14px;
  --max-shift: 18px;
  --marker-length: 42px;
}

[data-theme="light"] .quick-intro-side-rail .line-sidebar {
  --text-color: rgba(70, 64, 52, 0.78);
  --marker-color: rgba(120, 104, 72, 0.55);
  --accent-color: #a87924;
}

@media (max-width: 1199.98px) {
  .quick-intro-side-rail {
    width: min(100% - 32px, 920px);
    padding: 10px 14px;
  }

  .quick-intro-side-rail .line-sidebar--markers {
    padding-left: 0;
    padding-right: 0;
  }

  [dir="rtl"] .quick-intro-side-rail .line-sidebar--markers {
    padding-left: 0;
    padding-right: 0;
  }

  .quick-intro-side-rail .line-sidebar__list {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 10px 18px;
    justify-content: center;
  }

  .quick-intro-side-rail .line-sidebar__marker,
  .quick-intro-side-rail .line-sidebar--markers .line-sidebar__item:not(:last-child)::after {
    display: none;
  }

  .quick-intro-side-rail .line-sidebar__label {
    transform: none !important;
    padding: 8px 12px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.05);
    box-shadow: inset 0 0 0 1px rgba(234, 179, 8, 0.12);
  }

  .quick-intro-side-rail .line-sidebar__item[aria-current="true"] .line-sidebar__label {
    background: rgba(234, 179, 8, 0.16);
    box-shadow: inset 0 0 0 1px rgba(234, 179, 8, 0.35);
  }

  .quick-intro-side-rail .line-sidebar__item::before {
    inset: -4px;
  }
}