/*
  Shared navigation rail. Loaded standalone on both the vanilla Jinja pages and the React
  save-viewer shell (injected into dist/index.html), so every rule is scoped under .png-sidebar
  and defines its own custom properties instead of relying on each host page's :root — the two
  shells style :root very differently (F1 dashboard vars vs Tailwind) and neither is guaranteed
  to be present.
*/

.png-sidebar {
  --png-sb-width: 220px;
  --png-sb-width-collapsed: 56px;
  --png-sb-bg: #0c0c12;
  --png-sb-border: #2d2d3d;
  --png-sb-text: #9090a0;
  --png-sb-text-active: #ffffff;
  --png-sb-accent: #e10600;

  position: fixed;
  top: 0;
  left: 0;
  width: var(--png-sb-width);
  height: 100vh;
  background-color: var(--png-sb-bg);
  border-right: 1px solid var(--png-sb-border);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 12px 8px;
  gap: 4px;
  z-index: 1000;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  box-sizing: border-box;
  transition: width 0.15s ease;
}

.png-sidebar-collapsed {
  --png-sb-width: var(--png-sb-width-collapsed);
}

.png-sidebar-collapsed .png-sidebar-label {
  display: none;
}

.png-sidebar-brand {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  margin-bottom: 12px;
  border-radius: 8px;
  text-decoration: none;
  flex-shrink: 0;
}

.png-sidebar-logo {
  width: 32px;
  height: 32px;
  object-fit: contain;
}

.png-sidebar-links {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  width: 100%;
}

.png-sidebar-link {
  position: relative;
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 10px 12px;
  border-radius: 8px;
  color: var(--png-sb-text);
  text-decoration: none;
  box-sizing: border-box;
  transition: background-color 0.15s, color 0.15s;
}

.png-sidebar-link:hover {
  background-color: rgba(255, 255, 255, 0.06);
  color: var(--png-sb-text-active);
}

.png-sidebar-link-active {
  background-color: rgba(225, 6, 0, 0.15);
  color: var(--png-sb-text-active);
}

.png-sidebar-link-active::before {
  content: "";
  position: absolute;
  left: -8px;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 24px;
  border-radius: 0 3px 3px 0;
  background-color: var(--png-sb-accent);
}

.png-sidebar-icon {
  flex-shrink: 0;
  width: 18px;
  font-size: 18px;
  line-height: 1;
  text-align: center;
}

.png-sidebar-label {
  font-size: 13px;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.png-sidebar-toggle {
  margin-top: auto;
  align-self: flex-end;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border: none;
  border-radius: 6px;
  background: none;
  color: var(--png-sb-text);
  cursor: pointer;
  transition: background-color 0.15s, color 0.15s;
}

.png-sidebar-collapsed .png-sidebar-toggle {
  align-self: center;
}

.png-sidebar-toggle:hover {
  background-color: rgba(255, 255, 255, 0.06);
  color: var(--png-sb-text-active);
}

.png-sidebar-toggle-icon {
  font-size: 16px;
  line-height: 1;
}

.png-sidebar-toggle-icon-expand {
  display: none;
}

.png-sidebar-collapsed .png-sidebar-toggle-icon-collapse {
  display: none;
}

.png-sidebar-collapsed .png-sidebar-toggle-icon-expand {
  display: block;
}

/* Reserve the rail's width so host-page content never renders underneath it. Also resets the
   browser's default 8px body margin, which pages that don't load their own reset (e.g. home.html)
   would otherwise show as a white border around the page. */
body.png-has-sidebar {
  margin: 0;
  padding-left: 220px;
  box-sizing: border-box;
  transition: padding-left 0.15s ease;
}

body.png-sidebar-collapsed {
  padding-left: 56px;
}