/* Shared case-study navigation; each page supplies its section links and optional count. */
.vimagic-case-layout { display: flex; flex-direction: column; overflow: visible; }
.vimagic-case-content { min-width: 0; }
.vimagic-case-nav {
  position: static;
  top: 0;
  z-index: 8;
  order: -1;
  padding: 12px var(--gutter);
  background: var(--paper);
  color: var(--ink);
}
.vimagic-case-nav[data-enhanced] { position: sticky; }
.case-nav-title { margin: 0 0 12px; color: var(--muted); font-size: 11px; letter-spacing: .1em; text-transform: uppercase; }
.case-nav-list { list-style: none; margin: 0; padding: 0; }
.case-nav-list a { position: relative; display: block; padding: 10px 0 10px 14px; color: var(--muted); font-size: 12px; line-height: 1.4; transition: color .2s ease; }
.case-nav-list a:hover,
.case-nav-list a[aria-current="location"] { color: var(--ink); }
.case-nav-list a[aria-current="location"]::before { content: ''; position: absolute; left: 0; top: calc(50% - 2px); width: 4px; height: 4px; border-radius: 50%; background: currentColor; }
.case-nav-list a:focus-visible,
.case-nav-controls :focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; }
.case-nav-compact label { display: block; margin-bottom: 2px; color: var(--muted); font-size: 11px; }
.case-nav-controls { display: grid; grid-template-columns: minmax(0, 1fr) 44px; align-items: center; gap: 12px; }
.case-nav-controls select { width: 100%; min-width: 0; min-height: 44px; border: 0; border-radius: 0; padding: 6px 4px 6px 0; color: var(--ink); background: var(--paper); font: inherit; font-size: 14px; }
.case-nav-controls button { min-height: 44px; padding: 8px 0; border: 0; border-bottom: 1px solid currentColor; color: var(--ink); background: transparent; font: inherit; font-size: 13px; cursor: pointer; }
.vimagic-case-nav[data-enhanced] .case-nav-title,
.vimagic-case-nav[data-enhanced] .case-nav-list { display: none; }
.vimagic-case-content section[data-case-section] { scroll-margin-top: 24px; }
.vimagic-case-content section[data-case-section] > h2:focus { outline: none; }
/* The desktop rail sits within the existing gutter, leaving the article full width. */
@media (min-width: 1024px) and (min-height: 400px) {
  .vimagic-case-layout { display: grid; grid-template-columns: minmax(0, 1fr) 0; column-gap: 0; align-items: start; }
  .vimagic-case-content { grid-column: 1; grid-row: 1; }
  .vimagic-case-nav { grid-column: 2; grid-row: 1; position: sticky; top: max(16px, calc(50dvh - var(--case-nav-count, 9) * 16px)); align-self: start; width: 28px; margin: 0 0 0 -40px; padding: 0; max-height: none; overflow: visible; background: transparent; }
  .vimagic-case-nav .case-nav-title,
  .vimagic-case-nav[data-enhanced] .case-nav-title { display: none; }
  .vimagic-case-nav .case-nav-list,
  .vimagic-case-nav[data-enhanced] .case-nav-list { display: block; }
  .vimagic-case-nav .case-nav-compact { display: none; }
  .case-nav-list a { display: grid; place-items: center; width: 28px; height: 32px; padding: 0; }
  /* Each open row shares one measured rectangle, including the gaps beside short labels. */
  .case-nav-list a::after { content: ''; position: absolute; top: 0; right: 0; width: var(--case-nav-hit-width, calc(32ch + 28px)); height: 100%; background: none; visibility: hidden; pointer-events: auto; transition: visibility 0s linear .18s; }
  .vimagic-case-nav:hover .case-nav-list a::after,
  .vimagic-case-nav:focus-within .case-nav-list a::after { visibility: visible; transition-delay: 0s; }
  .case-nav-list a::before,
  .case-nav-list a[aria-current="location"]::before { content: ''; position: static; display: block; width: 8px; height: 0; border-top: 2px solid currentColor; border-radius: 1px; background: none; opacity: .55; transition: width .2s ease, opacity .2s ease; }
  .case-nav-list a:hover::before { width: 12px; opacity: 1; }
  .case-nav-list a[aria-current="location"]::before { width: 16px; opacity: 1; }
  .case-nav-label { z-index: 1; position: absolute; right: calc(100% - 1px); top: 50%; padding: 7px 12px; border-radius: 3px; white-space: nowrap; color: var(--ink); background: var(--paper); opacity: 0; transform: translate(6px, -50%); pointer-events: none; transition: opacity .18s ease, transform .18s ease; }
  .vimagic-case-nav:hover .case-nav-label,
  .vimagic-case-nav:focus-within .case-nav-label { opacity: 1; transform: translate(0, -50%); pointer-events: auto; }
  .vimagic-case-content section[data-case-section] { scroll-margin-top: 32px; }
}
/* Touch-only wide screens use the same explicit selector as smaller screens. */
@media (min-width: 1024px) and (min-height: 400px) and (hover: none) and (pointer: coarse) {
  .vimagic-case-layout { display: flex; }
  .vimagic-case-nav { top: 0; width: auto; margin: 0; padding: 12px var(--gutter); background: var(--paper); }
  .vimagic-case-nav[data-enhanced] .case-nav-list { display: none; }
  .vimagic-case-nav[data-enhanced] .case-nav-compact { display: block; }
  .vimagic-case-nav:not([data-enhanced]) { position: static; }
  .vimagic-case-nav:not([data-enhanced]) .case-nav-list a { display: block; width: auto; height: auto; padding: 10px 0; }
  .vimagic-case-nav:not([data-enhanced]) .case-nav-list a::before { display: none; }
  .vimagic-case-nav .case-nav-list a::after { display: none; }
  .vimagic-case-nav:not([data-enhanced]) .case-nav-label { position: static; padding: 0; opacity: 1; transform: none; pointer-events: auto; }
}
@media (prefers-reduced-motion: reduce) {
  .case-nav-list a, .case-nav-list a::before, .case-nav-list a::after, .case-nav-label { transition: none; }
}

@media (forced-colors: active) { .case-nav-list a::before { opacity: 1; } }