/* ==========================================================================
   Projects ZOOM — enlarge + click-to-zoom for the static .visual-svg
   diagrams on the unit culminating-project wizard pages (version-a /
   version-b). Additive and print-safe: JS (projects-zoom.js) tags each
   diagram with `.nz-zoomable`, wraps it in a `<figure class="nz-fig">`,
   and drives the fullscreen lightbox. Selectors are class-qualified so
   they win over each page's inline `.visual-svg { max-width: 520px }`
   without editing per-page styles.
   ========================================================================== */

/* ---- Inline enlarge (vectors scale crisply) --------------------------- */
.visual-svg.nz-zoomable {
  max-width: 760px;
  cursor: zoom-in;
  transition:
    box-shadow 0.18s ease,
    transform 0.18s ease;
}
.visual-svg.nz-zoomable:hover,
.visual-svg.nz-zoomable:focus-visible {
  box-shadow: 0 6px 22px rgba(16, 43, 60, 0.18);
  outline: none;
}
.visual-svg.nz-zoomable:focus-visible {
  box-shadow:
    0 0 0 3px rgba(23, 99, 199, 0.45),
    0 6px 22px rgba(16, 43, 60, 0.18);
}

.nz-fig {
  position: relative;
  margin: 0 auto 20px;
  width: fit-content;
  max-width: 100%;
}
.nz-fig .visual-svg.nz-zoomable {
  margin: 0 auto; /* figure owns the outer margin now */
}

/* ---- "Tap to enlarge" hint -------------------------------------------- */
.nz-hint {
  position: absolute;
  top: 8px;
  right: 8px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: #10243e;
  background: rgba(255, 255, 255, 0.92);
  border: 1.5px solid rgba(23, 99, 199, 0.4);
  border-radius: 999px;
  pointer-events: none;
  box-shadow: 0 1px 4px rgba(16, 43, 60, 0.12);
}

/* ---- Fullscreen lightbox ---------------------------------------------- */
.nz-lightbox {
  position: fixed;
  inset: 0;
  z-index: 2147483000;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 24px;
  background: rgba(10, 22, 38, 0.82);
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
  animation: nz-fade 0.16s ease;
}
@keyframes nz-fade {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.nz-lightbox svg {
  width: auto;
  height: auto;
  max-width: 92vw;
  max-height: 82vh;
  background: #fff;
  border-radius: 14px;
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.45);
}

.nz-close {
  position: absolute;
  top: 18px;
  right: 18px;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  line-height: 1;
  color: #10243e;
  background: #fff;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.3);
}
.nz-close:focus-visible {
  outline: 3px solid #7db4ff;
  outline-offset: 2px;
}

.nz-caption {
  max-width: 92vw;
  text-align: center;
  color: #fff;
  font-size: 0.9rem;
  font-weight: 600;
}

@media print {
  .nz-hint {
    display: none !important;
  }
  .nz-lightbox {
    display: none !important;
  }
  .visual-svg.nz-zoomable {
    cursor: default;
    box-shadow: none;
  }
}