.sidebar {
  width: var(--sidebar-width);
  flex-shrink: 0;
  background: var(--bg-surface);
  border-right: 1px solid var(--border-subtle);
  overflow-y: auto;
  padding: 12px 8px 16px;
  transition: transform var(--duration-med) var(--ease-standard);
}

.sidebar__brand {
  display: flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--accent-copper-bright);
  padding: 8px 10px 16px;
  margin-bottom: 4px;
  border-bottom: 1px solid var(--border-subtle);
}

.sidebar__brand-mark {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  border-radius: 3px;
  background: linear-gradient(
    155deg,
    var(--accent-copper-bright) 0%,
    var(--accent-copper) 55%,
    var(--accent-teal) 100%
  );
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.25), inset 0 -2px 3px rgba(0, 0, 0, 0.25);
}

.sidebar__group-label {
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  padding: 16px 10px 6px;
}

.sidebar__item {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  background: transparent;
  border: none;
  border-left: 2px solid transparent;
  color: var(--text-secondary);
  font-size: 13px;
  padding: 7px 10px 7px 8px;
  margin-left: 2px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  cursor: pointer;
  text-align: left;
  transition: background var(--duration-fast) var(--ease-standard),
    border-color var(--duration-fast) var(--ease-standard),
    color var(--duration-fast) var(--ease-standard);
}

.sidebar__item:hover {
  background: var(--bg-surface-2);
  color: var(--text-primary);
}

.sidebar__item--active {
  background: var(--bg-surface-3);
  color: var(--text-primary);
  border-left-color: var(--accent-copper);
}

.sidebar__label {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.sidebar__soon-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-warning);
  flex-shrink: 0;
}

/* Phones: the sidebar is hidden off-canvas and slides in as a drawer
   over the content, opened via Toolbar's hamburger button, instead of
   permanently eating screen width like on desktop. */
@media (max-width: 768px) {
  .sidebar {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    width: min(80vw, 280px);
    z-index: 1700;
    transform: translateX(-100%);
    box-shadow: 4px 0 24px rgba(0, 0, 0, 0.45);
  }

  .sidebar--open {
    transform: translateX(0);
  }

  .sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(10, 12, 9, 0.55);
    z-index: 1650;
  }

  .sidebar-backdrop--visible {
    display: block;
  }
}