/* X-VPN case study: local exceptions bound to shared Portfolio structure/tokens. */
html:has(body.is-xvpn-project) { scroll-behavior: smooth; }
.is-xvpn-project .site-shell { width: 100%; max-width: none; margin: 0; padding: var(--site-nav-height) 0 0; }
.project-view[data-project="xvpn"] { position: relative; width: 100%; max-width: none; padding: 0; }
.project-view[data-project="xvpn"] .case-shell { width: 100%; max-width: none; margin: 0; }
.project-view[data-project="xvpn"] .case-header { display: none; }
.project-view[data-project="xvpn"] .case-body { padding: 0; }
.xvpn-page { --xvpn-canvas: var(--portfolio-color-bg); --xvpn-panel: var(--portfolio-color-surface); --xvpn-ink: var(--portfolio-color-text-strong); --xvpn-body: var(--portfolio-color-text); --xvpn-muted: var(--portfolio-color-text-subtle); --xvpn-line: var(--portfolio-color-line); min-width: 0; background: var(--xvpn-canvas); color: var(--xvpn-body); }
.xvpn-layout { display: grid; grid-template-columns: 249px minmax(0, 1fr); max-width: var(--portfolio-layout-max); min-height: calc(100vh - var(--site-nav-height)); margin: 0 auto; }
.xvpn-sidebar { position: sticky; top: var(--site-nav-height); align-self: start; height: calc(100vh - var(--site-nav-height)); padding: var(--portfolio-space-06) var(--portfolio-space-05); border-right: var(--portfolio-divider-width) solid var(--xvpn-line); background: var(--xvpn-canvas); }
.xvpn-sidebar nav > div { display: grid; gap: 4px; }
.xvpn-sidebar button { display: flex; justify-content: space-between; width: 200px; min-height: 36px; padding: 8px 24px; border: 0; border-radius: 4px; background: transparent; color: var(--xvpn-body); text-align: left; font: inherit; font-size: 13px; line-height: 20px; cursor: pointer; }
.xvpn-sidebar button:hover, .xvpn-sidebar button.is-active { background: var(--xvpn-panel); color: var(--xvpn-ink); }
.xvpn-sidebar button small { color: var(--xvpn-muted); font-size: 10px; }
.xvpn-main { min-width: 0; overflow-x: clip; padding: 0 var(--portfolio-flow-padding-inline) var(--portfolio-space-10); background: var(--xvpn-canvas); }
.xvpn-section { min-width: 0; max-width: var(--portfolio-flow-max); padding: var(--portfolio-space-09) 0 104px; border-bottom: var(--portfolio-divider-width) solid var(--xvpn-line); scroll-margin-top: calc(var(--portfolio-topbar-height) + 16px); }
.xvpn-section-head { max-width: 900px; }
.xvpn-section-head h1, .xvpn-section-head h2 { max-width: 1100px; margin: 0; color: var(--xvpn-ink); text-wrap: balance; }
.xvpn-section-head h1 { font-size: var(--portfolio-type-heading-01-size); line-height: var(--portfolio-type-heading-01-line); font-weight: var(--portfolio-type-heading-01-weight); letter-spacing: -.035em; }
.xvpn-section-head h2 { font-size: var(--portfolio-type-heading-02-size); line-height: var(--portfolio-type-heading-02-line); font-weight: var(--portfolio-type-heading-02-weight); letter-spacing: -.025em; }
.xvpn-section-head p { max-width: 820px; margin: 28px 0 0; color: var(--xvpn-body); font-size: var(--portfolio-type-lead-size); line-height: var(--portfolio-type-lead-line); }
.xvpn-reveal { opacity: 0; transform: translateY(12px); }
.xvpn-reveal.is-visible { opacity: 1; transform: translateY(0); transition: opacity 560ms cubic-bezier(.22, 1, .36, 1), transform 560ms cubic-bezier(.22, 1, .36, 1); transition-delay: var(--xvpn-reveal-delay, 0ms); }
.xvpn-section-content { display: grid; gap: 40px; }
.xvpn-section-content--xvpn-mobile, .xvpn-section-content--xvpn-desktop { gap: 0; }
.xvpn-section-content--xvpn-interaction { margin-top: 0; }
.xvpn-section-content--xvpn-architecture, .xvpn-section-content--xvpn-states, .xvpn-section-content--xvpn-servers, .xvpn-section-content--xvpn-system, .xvpn-section-content--xvpn-comparison { margin-top: 56px; }
.xvpn-gallery-mode { margin-top: 56px; }
.xvpn-gallery-mode + .xvpn-gallery-mode { padding-top: 56px; border-top: 1px solid var(--line); }
.xvpn-section-content--xvpn-desktop .xvpn-gallery-mode + .xvpn-gallery-mode { border-top-color: var(--xvpn-line); }
.xvpn-gallery-mode h3 { margin: 0 0 24px; font-size: 20px; line-height: 28px; font-weight: 600; }
.xvpn-media { margin: 0; min-width: 0; }
.xvpn-media .visual-media-reveal { opacity: 0; transition: opacity 420ms cubic-bezier(.22, 1, .36, 1); }
.xvpn-media .visual-media-reveal.is-media-visible { opacity: 1; }
.xvpn-media img { display: block; width: 100%; height: auto; border: 0; border-radius: 12px; background: var(--surface); object-fit: contain; object-position: center top; }
.xvpn-media figcaption { padding: 12px 0 0; color: var(--xvpn-body); font-size: 13px; line-height: 20px; }
.xvpn-gallery { display: grid; gap: 16px; align-items: start; }
.xvpn-gallery--mobile { grid-template-columns: repeat(3, minmax(0, 1fr)); row-gap: 44px; column-gap: 28px; }
.xvpn-gallery--desktop { grid-template-columns: 1fr; row-gap: 28px; }
.xvpn-gallery--comparison { display: flex; overflow-x: auto; gap: 16px; margin-top: 24px; padding: 4px 0 18px; scroll-snap-type: x proximity; touch-action: pan-x; scrollbar-width: none; -webkit-overflow-scrolling: touch; }
.xvpn-gallery--comparison::-webkit-scrollbar { display: none; }
.xvpn-gallery--comparison .xvpn-media { flex: 0 0 184px; scroll-snap-align: start; }
.xvpn-gallery--comparison .xvpn-media img { border: 1px solid var(--line); object-fit: contain; }
.xvpn-desktop-stage { display: grid; min-height: 800px; place-items: center; overflow: hidden; border-radius: 8px; background-position: center; background-size: cover; }
.xvpn-desktop-stage--compact { min-height: 360px; }
.xvpn-desktop-stage--module-full, .xvpn-desktop-stage--compact { padding: 28px; }
.xvpn-desktop-stage--light { background-image: url("../assets/projects/xvpn/desktop-background-light.webp"); }
.xvpn-desktop-stage--dark { background-image: url("../assets/projects/xvpn/desktop-background-dark.jpg"); }
.xvpn-desktop-stage img { width: 80%; max-width: 100%; border-radius: 16px; box-shadow: 0 20px 25px -5px rgb(0 0 0 / .16); }
.xvpn-desktop-stage--compact img { width: 88%; }
.xvpn-video-stack { display: block; }
.xvpn-video { display: grid; aspect-ratio: 1920 / 1368; margin-top: 40px; overflow: hidden; border: 1px solid #d9dce1; border-radius: 8px; background: transparent; }
.xvpn-video video { display: block; width: calc(100% + 2px); height: calc(100% + 2px); margin: -1px; background: transparent; object-fit: cover; }
.xvpn-comparison { display: grid; gap: 56px; }
.xvpn-comparison article + article { padding-top: 56px; border-top: 1px solid var(--line); }
.xvpn-points { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.xvpn-point { --card-radius: var(--portfolio-radius-lg); --card-shadow: none; --card-border-color: var(--line); --card-border-width: 1px; --card-bg: var(--surface); min-height: 152px; padding: 24px; }
.xvpn-section-content--xvpn-architecture .xvpn-point { --card-border-width: var(--portfolio-divider-width); --card-border-color: var(--portfolio-color-line); --card-bg: var(--portfolio-color-surface); }
.xvpn-point strong { display: block; color: var(--text-strong); font-size: 16px; line-height: 22px; font-weight: 600; }
.xvpn-point p { margin: 12px 0 0; font-size: 14px; line-height: 22px; }
.xvpn-comparison article > h3 { margin: 0; font-size: 22px; line-height: 30px; font-weight: 600; }
.xvpn-section-content > h3 { margin: 0 0 var(--portfolio-space-03); font-size: 20px; line-height: 28px; }
@media (max-width: 640px) {
  .is-xvpn-project .site-shell { padding-top: var(--portfolio-topbar-mobile-height); }
  .xvpn-layout { display: block; }
  .xvpn-sidebar { display: none; }
  .xvpn-main { padding: 0 16px var(--portfolio-space-10); }
  .xvpn-section { padding-top: 64px; }
  .xvpn-section-head p { margin-top: 28px; }
  .xvpn-video { margin-top: 32px; }
  .xvpn-section-content--xvpn-architecture, .xvpn-section-content--xvpn-states, .xvpn-section-content--xvpn-servers, .xvpn-section-content--xvpn-system, .xvpn-section-content--xvpn-comparison { margin-top: 40px; }
  .xvpn-section-content--xvpn-architecture, .xvpn-section-content--xvpn-states, .xvpn-section-content--xvpn-servers, .xvpn-section-content--xvpn-system { gap: 32px; }
  .xvpn-comparison { gap: 40px; }
  .xvpn-comparison article + article { padding-top: 40px; }
  .xvpn-gallery--mobile { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .xvpn-desktop-stage { min-height: 320px; }
  .xvpn-desktop-stage--module-full, .xvpn-desktop-stage--compact { min-height: 320px; padding: 20px; }
  .xvpn-gallery-mode { margin-top: 40px; }
  .xvpn-gallery-mode + .xvpn-gallery-mode { padding-top: 40px; }
  .xvpn-points { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  html:has(body.is-xvpn-project) { scroll-behavior: auto; }
  .xvpn-media .visual-media-reveal, .xvpn-media .visual-media-reveal.is-media-visible { opacity: 1; transition: none; }
  .xvpn-reveal, .xvpn-reveal.is-visible { opacity: 1; transform: none; transition: none; }
}