/*
  Dynamic Agility Website
  Collapsible dual rails for exercise detail pages
*/

:root {
  --da-dual-rail-width: 3.15rem;
  --da-dual-collapsed-width: calc(var(--da-dual-rail-width) * 2);
  --da-dual-panel-width: min(24rem, calc(100vw - var(--da-dual-collapsed-width) - 1rem));
}

.da-dual-sidebar-shell {
  display: none;
}

.da-workshop-map-sidebar.da-detail-sidebar {
  border-color: rgba(37, 99, 235, 0.16);
  background:
    radial-gradient(circle at 8% 0%, rgba(186, 230, 253, 0.56), transparent 18rem),
    radial-gradient(circle at 92% 8%, rgba(37, 99, 235, 0.16), transparent 18rem),
    linear-gradient(180deg, rgba(248, 252, 255, 0.96), rgba(224, 242, 254, 0.88));
}

.da-workshop-map-sidebar .da-detail-sidebar-brand {
  border-bottom-color: rgba(37, 99, 235, 0.16);
}

.da-workshop-map-sidebar .da-brand-link {
  color: #1d4ed8;
}

.da-workshop-map-sidebar .da-detail-sidebar-brand p {
  color: #475569;
}

.da-workshop-map-sidebar .da-detail-sidebar-scroll {
  scrollbar-color: rgba(37, 99, 235, 0.35) transparent;
}

.da-workshop-map-sidebar .da-workshop-static-link {
  margin: 0 0 0.65rem;
}

.da-workshop-map-sidebar .da-detail-nav-group[open] {
  border-color: rgba(37, 99, 235, 0.16);
  background: rgba(255, 255, 255, 0.72);
}

.da-workshop-map-sidebar .da-detail-nav-group .da-nav-number {
  background: linear-gradient(135deg, rgba(186, 230, 253, 0.92), rgba(255, 255, 255, 0.78));
  color: #1d4ed8;
}

.da-workshop-map-sidebar .da-detail-nav-subitem span {
  min-width: 2.25rem;
  color: #2563eb;
}

.da-workshop-map-sidebar .da-detail-nav-subitem:hover,
.da-workshop-map-sidebar .da-detail-nav-subitem.is-active {
  color: var(--da-ink);
  background: rgba(186, 230, 253, 0.42);
}

.da-workshop-map-sidebar .da-detail-nav-subitem.is-active {
  box-shadow: inset 3px 0 0 #2563eb;
}

.da-workshop-map-sidebar .da-detail-sidebar-footer {
  border-top-color: rgba(37, 99, 235, 0.16);
}

.da-workshop-map-sidebar .da-detail-sidebar-footer a {
  background: linear-gradient(135deg, #2563eb, #0284c7);
}

@media (min-width: 1180px) {
  .da-dual-sidebar-ready.da-detail-page-with-sidebar.has-detail-sidebar {
    padding-left: calc(var(--da-dual-collapsed-width) + 1.35rem);
  }

  .da-dual-sidebar-ready .da-subpage-hero,
  .da-dual-sidebar-ready .da-subpage-section,
  .da-dual-sidebar-ready .da-subpage-closing {
    width: min(72rem, 100%);
  }

  .da-dual-sidebar-shell {
    position: fixed;
    inset: 0 auto 0 0;
    z-index: 120;
    display: block;
    width: var(--da-dual-collapsed-width);
    height: 100vh;
    height: 100dvh;
    pointer-events: none;
    overflow: visible;
  }

  .da-dual-rail {
    position: absolute;
    top: 0;
    bottom: 0;
    z-index: 8;
    display: grid;
    width: var(--da-dual-rail-width);
    place-items: center;
    border: 0;
    border-right: 1px solid rgba(15, 23, 42, 0.12);
    color: #ffffff;
    cursor: pointer;
    font: inherit;
    letter-spacing: 0.16em;
    pointer-events: auto;
    text-transform: uppercase;
    transition:
      left 240ms ease,
      filter 180ms ease,
      transform 180ms ease;
  }

  .da-dual-rail:hover,
  .da-dual-rail:focus-visible,
  .da-dual-sidebar-shell.is-pinned .da-dual-rail[aria-expanded="true"] {
    filter: brightness(1.06) saturate(1.06);
  }

  .da-dual-rail:focus-visible {
    outline: 3px solid rgba(255, 255, 255, 0.78);
    outline-offset: -6px;
  }

  .da-dual-rail span {
    display: inline-block;
    white-space: nowrap;
    writing-mode: vertical-rl;
    transform: rotate(180deg);
    font-size: 0.68rem;
    font-weight: 820;
  }

  .da-workshop-rail {
    left: 0;
    background: linear-gradient(180deg, #2563eb, #0284c7);
  }

  .da-exercise-rail {
    left: var(--da-dual-rail-width);
    background: linear-gradient(
      180deg,
      var(--da-exercise-accent, #0f766e),
      var(--da-exercise-accent-dark, #115e59)
    );
  }

  .da-dual-sidebar-shell.is-workshop-open .da-exercise-rail {
    left: calc(var(--da-dual-rail-width) + var(--da-dual-panel-width));
  }

  .da-dual-sidebar-shell .da-detail-sidebar.da-dual-panel {
    position: absolute;
    top: 0;
    bottom: 0;
    z-index: 4;
    display: flex;
    width: var(--da-dual-panel-width);
    height: 100vh;
    height: 100dvh;
    max-height: 100dvh;
    flex-direction: column;
    margin: 0;
    border-top: 0;
    border-bottom: 0;
    border-left: 0;
    border-radius: 0;
    opacity: 0;
    overflow: hidden;
    pointer-events: none;
    transform: translateX(-0.8rem);
    transition:
      opacity 180ms ease,
      transform 220ms ease,
      visibility 180ms ease;
    visibility: hidden;
  }

  .da-dual-sidebar-shell .da-workshop-panel {
    left: var(--da-dual-rail-width);
  }

  .da-dual-sidebar-shell .da-exercise-panel {
    left: var(--da-dual-collapsed-width);
  }

  .da-dual-sidebar-shell.is-workshop-open .da-workshop-panel,
  .da-dual-sidebar-shell.is-exercise-open .da-exercise-panel {
    opacity: 1;
    pointer-events: auto;
    transform: translateX(0);
    visibility: visible;
  }

  .da-dual-sidebar-shell .da-detail-sidebar-scroll {
    flex: 1;
    min-height: 0;
    overscroll-behavior: contain;
  }
}

@media (max-width: 1179px) {
  .da-dual-sidebar-ready.da-detail-page-with-sidebar.has-detail-sidebar {
    padding-left: 0;
  }

  .da-dual-sidebar-shell {
    position: sticky;
    top: 0;
    z-index: 120;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
    width: min(76rem, calc(100% - 1rem));
    margin: 0.5rem auto 1rem;
    pointer-events: none;
  }

  .da-dual-rail {
    display: grid;
    min-height: 3rem;
    place-items: center;
    border: 1px solid rgba(15, 23, 42, 0.1);
    border-radius: 999px;
    color: #ffffff;
    cursor: pointer;
    font: inherit;
    font-size: 0.72rem;
    font-weight: 820;
    letter-spacing: 0.12em;
    pointer-events: auto;
    text-transform: uppercase;
  }

  .da-workshop-rail {
    background: linear-gradient(135deg, #2563eb, #0284c7);
  }

  .da-exercise-rail {
    background: linear-gradient(
      135deg,
      var(--da-exercise-accent, #0f766e),
      var(--da-exercise-accent-dark, #115e59)
    );
  }

  .da-dual-sidebar-shell .da-detail-sidebar.da-dual-panel {
    position: fixed;
    inset: 4.25rem 0.75rem auto;
    z-index: 125;
    display: flex;
    width: auto;
    max-height: min(78vh, 42rem);
    flex-direction: column;
    margin: 0;
    opacity: 0;
    overflow: hidden;
    pointer-events: none;
    transform: translateY(-0.6rem);
    transition:
      opacity 180ms ease,
      transform 220ms ease,
      visibility 180ms ease;
    visibility: hidden;
  }

  .da-dual-sidebar-shell.is-workshop-open .da-workshop-panel,
  .da-dual-sidebar-shell.is-exercise-open .da-exercise-panel {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
    visibility: visible;
  }

  .da-dual-sidebar-shell .da-detail-sidebar-scroll {
    max-height: 56vh;
  }

  .da-dual-sidebar-shell .da-detail-sidebar-footer {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .da-dual-rail,
  .da-dual-sidebar-shell .da-detail-sidebar.da-dual-panel {
    transition: none;
  }
}