.xjk-sidebar-shell {
  display: flex;
  flex-direction: column;
  background: var(--xjk-sidebar-bg, var(--bg-surface, #121216));
  border-right: 1px solid var(--xjk-sidebar-line, var(--border, #2a2a30));
  box-shadow: inset -1px 0 0 rgba(255, 255, 255, 0.03);
}

.xjk-sidebar-head {
  padding: 1.5rem;
  border-bottom: 1px solid var(--xjk-sidebar-line, var(--border, #2a2a30));
}

.xjk-brand {
  display: grid;
  min-width: 0;
}

.xjk-home-link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 0.8rem;
  width: fit-content;
  color: inherit;
  text-decoration: none;
}

.xjk-brand-mark {
  width: 72px;
  height: 50px;
  display: grid;
  place-items: center;
  border: 1px solid var(--xjk-sidebar-line, var(--border, #2a2a30));
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(255,255,255,.08), rgba(255,255,255,.02)),
    rgba(255,255,255,.03);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.08);
  transition: border-color 0.18s ease, background 0.18s ease, transform 0.18s ease;
}

.xjk-home-link:hover .xjk-brand-mark {
  border-color: var(--xjk-sidebar-line-strong, var(--border-hover, #3b82f6));
  background:
    linear-gradient(135deg, rgba(255,255,255,.12), rgba(255,255,255,.03)),
    rgba(255,255,255,.05);
  transform: translateY(-1px);
}

.xjk-brand-logo {
  width: 52px;
  height: auto;
  display: block;
}

.xjk-brand-copy {
  display: grid;
  min-width: 0;
}

.xjk-brand-copy strong {
  color: var(--xjk-sidebar-brand-ink, var(--accent, #3b82f6));
  font-family: var(--xjk-sidebar-brand-font, "Chakra Petch", "Manrope", sans-serif);
  font-size: 1.55rem;
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.03em;
}

.xjk-brand-dot {
  color: var(--xjk-sidebar-brand-dot, currentColor);
}

.xjk-sidebar-nav {
  display: flex;
  flex-direction: column;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--xjk-sidebar-line, var(--border, #2a2a30));
}

.xjk-sidebar-tab {
  width: 100%;
  background: transparent;
  border: none;
  border-left: 3px solid transparent;
  color: var(--xjk-sidebar-muted, var(--ink-dim, #a0a0ab));
  text-align: left;
  padding: 0.7rem 1.5rem;
  font-family: "Manrope", sans-serif;
  font-size: 0.92rem;
  cursor: pointer;
  transition: background 160ms ease, border-color 160ms ease, color 160ms ease;
}

.xjk-sidebar-tab:hover {
  background: rgba(255, 255, 255, 0.04);
  color: var(--xjk-sidebar-ink, var(--ink, #f0f0f5));
}

.xjk-sidebar-tab.is-active {
  background: var(--xjk-sidebar-accent-dim, var(--accent-dim, rgba(59, 130, 246, 0.15)));
  border-left-color: var(--xjk-sidebar-accent, var(--accent, #3b82f6));
  color: var(--xjk-sidebar-ink, var(--ink, #f0f0f5));
}

.xjk-sidebar-tab-label {
  display: block;
  font-size: 0.92rem;
  line-height: 1.2;
  font-weight: 600;
}

.xjk-sidebar-tab-copy {
  display: block;
  color: var(--xjk-sidebar-dim, var(--ink-muted, #555560));
  font-size: 0.75rem;
  line-height: 1.4;
  margin-top: 0.15rem;
}

.xjk-sidebar-tab-copy:empty {
  display: none;
}

.xjk-sidebar-meta {
  display: grid;
  gap: 0.25rem;
  padding: 1.25rem 1.5rem 0;
}

.xjk-sidebar-meta-label {
  color: var(--xjk-sidebar-dim, var(--ink-muted, #555560));
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.xjk-sidebar-meta-value {
  color: var(--xjk-sidebar-ink, var(--ink, #f0f0f5));
  font-family: "Space Mono", monospace;
  font-size: 0.92rem;
}

.xjk-sidebar-meta-value[data-tone="success"] {
  color: var(--ok, #2a9d8f);
}

.xjk-sidebar-meta-value[data-tone="warning"] {
  color: var(--warn, #e9c46a);
}

.xjk-sidebar-meta-value[data-tone="error"] {
  color: var(--bad, #e76f51);
}

.xjk-sidebar-shell .sidebar-account-slot {
  margin-top: auto;
  padding: 1.5rem;
  border-top: 1px solid var(--xjk-sidebar-line, var(--border, #2a2a30));
}

@media (max-width: 900px) {
  .xjk-sidebar-shell {
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--xjk-sidebar-line, var(--border, #2a2a30));
  }

  .xjk-sidebar-nav {
    flex-direction: row;
    flex-wrap: wrap;
    padding: 0;
  }

  .xjk-sidebar-tab {
    width: auto;
    flex: 1 1 180px;
    border-left: none;
    border-bottom: 2px solid transparent;
    padding: 0.85rem 1rem;
  }

  .xjk-sidebar-tab.is-active {
    border-bottom-color: var(--xjk-sidebar-accent, var(--accent, #3b82f6));
  }

  .xjk-sidebar-meta {
    padding: 1rem 1.5rem 0;
  }

  .xjk-sidebar-shell .sidebar-account-slot {
    display: none;
  }
}

@media (max-width: 780px) {
  .xjk-home-link {
    gap: 0.7rem;
  }

  .xjk-brand-mark {
    width: 64px;
    height: 44px;
  }

  .xjk-brand-logo {
    width: 46px;
  }
}