.sidebar {
  width: 248px;
  min-width: 248px;
  background: var(--bg-sidebar);
  border-right: 1px solid rgba(255,255,255,0.06);
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
  transition: width var(--transition-normal), min-width var(--transition-normal);
  z-index: 100;
}

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

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px 10px;
  height: 52px;
}

.sidebar-logo {
  display: flex;
  align-items: center;
}

.sidebar-logo svg {
  width: 28px;
  height: 28px;
}

.sidebar-search {
  display: flex;
  align-items: center;
  gap: 6px;
  height: 20px;
  color: rgba(255,255,255,0.45);
  cursor: pointer;
  padding: 0;
  border: none;
  background: none;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast);
  font-family: inherit;
}

.sidebar-search:hover {
  color: var(--text-primary);
}

.sidebar-search svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.sidebar-shortcut {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 20px;
  font-size: 12px;
  font-weight: 500;
  color: rgba(255,255,255,0.35);
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 5px;
  white-space: nowrap;
  letter-spacing: 1px;
}

.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 0;
}

.nav-section {
  padding: 2px 12px;
}

.nav-divider {
  height: 1px;
  background: rgba(255,255,255,0.06);
  margin: 6px 12px;
}

.nav-item {
  display: grid;
  grid-template-columns: 20px 1fr;
  column-gap: 12px;
  align-items: center;
  padding: 5px 12px;
  margin: 0;
  color: #9ca3af;
  font-size: 14px;
  font-weight: 400;
  height: 30px;
  border-radius: 8px;
  transition: all var(--transition-fast);
  cursor: pointer;
  white-space: nowrap;
  position: relative;
  text-decoration: none;
}

.nav-item:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.04);
}

.nav-item.active {
  color: var(--green-accent);
  background: rgba(29, 216, 159, 0.12);
  font-weight: 500;
}

.nav-item svg,
.nav-item .nav-icon {
  justify-self: center;
  align-self: center;
}

.nav-item.active svg {
  color: var(--green-accent);
}

.nav-section-header {
  display: grid;
  grid-template-columns: 20px 1fr auto;
  column-gap: 12px;
  align-items: center;
  padding: 5px 12px;
  margin: 0;
  height: 30px;
  color: var(--text-tertiary);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  cursor: pointer;
  border-radius: 8px;
  transition: color var(--transition-fast);
}

.nav-section-header:hover {
  color: var(--text-secondary);
}

.nav-section-header > svg:first-child {
  justify-self: center;
}

.nav-section-header > svg:last-child {
  transition: transform var(--transition-fast);
}

.nav-section-header.open > svg:last-child {
  transform: rotate(180deg);
}

.sidebar-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 6px 12px 10px;
}

.sidebar-bottom .nav-item {
  font-size: 14px;
  padding: 5px 12px;
}

.sidebar .collapsed-hide {
  display: block;
}

.sidebar.collapsed .collapsed-hide {
  display: none;
}

.mobile-menu-btn {
  display: none;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  flex-shrink: 0;
}

.mobile-menu-btn svg {
  width: 22px;
  height: 22px;
}

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 99;
}

@media (max-width: 1024px) {
  .sidebar {
    width: var(--sidebar-collapsed);
    min-width: var(--sidebar-collapsed);
  }
  .sidebar .collapsed-hide {
    display: none;
  }
}

@media (max-width: 768px) {
  .sidebar {
    display: none;
  }
  .sidebar.mobile-open {
    display: flex;
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: 260px;
    min-width: 260px;
    z-index: 200;
    box-shadow: 4px 0 24px rgba(0, 0, 0, 0.5);
  }
  .sidebar.mobile-open .collapsed-hide {
    display: block;
  }
  .sidebar-overlay.active {
    display: block;
  }
  .mobile-menu-btn {
    display: flex;
  }
}