/* ===== Sidebar ===== */
.sidebar {
  position: fixed;
  top: 0; left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: #111827;
  display: flex;
  flex-direction: column;
  z-index: 100;
  transition: width 0.25s ease;
  overflow: hidden;
}
.sidebar.collapsed { width: var(--sidebar-collapsed); }
.sidebar.collapsed .nav-item span { display: none; }
.sidebar.collapsed .sidebar-toggle svg { transform: rotate(180deg); }

.sidebar-logo {
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  flex-shrink: 0;
}
.sidebar-logo-img {
  height: 28px;
  width: auto;
  filter: brightness(0) invert(1);
  transition: height 0.25s;
}
.sidebar.collapsed .sidebar-logo-img { height: 24px; }

.sidebar-nav {
  flex: 1;
  padding: 12px 8px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  color: #9CA3AF;
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  transition: all 0.15s;
  white-space: nowrap;
}
.nav-item:hover { background: rgba(255,255,255,0.06); color: #E5E7EB; }
.nav-item.active {
  background: rgba(79,70,229,0.15);
  color: #A5B4FC;
}
.nav-item svg { flex-shrink: 0; }

.sidebar-toggle {
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  background: transparent;
  color: #6B7280;
  cursor: pointer;
  border-top: 1px solid rgba(255,255,255,0.06);
  flex-shrink: 0;
}
.sidebar-toggle:hover { color: #9CA3AF; }
.sidebar-toggle svg { transition: transform 0.25s; }