frontend/src/components/layout/Sidebar.css

.dw-sidebar {
  width: var(--sidebar-width);
  flex-shrink: 0;
  height: 100vh;
  position: sticky;
  top: 0;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--color-border);
  background: var(--color-surface);
  padding: var(--space-5) var(--space-3);
  transition: width 0.2s ease;
  overflow: hidden;
  z-index: 2;
}

.dw-sidebar--collapsed {
  width: 60px;
  padding: var(--space-5) var(--space-2);
}

.dw-sidebar__brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0 var(--space-2);
  min-height: 36px;
  cursor: pointer;
  border-radius: var(--radius-md);
  text-decoration: none;
  color: inherit;
  transition: background var(--transition-fast);
  flex: 1;
}

.dw-sidebar__brand:hover {
  background: var(--color-surface-hover);
}

.dw-sidebar__top {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
}

.dw-sidebar--collapsed .dw-sidebar__top {
  flex-direction: column;
  gap: var(--space-2);
}

.dw-sidebar--collapsed .dw-sidebar__brand {
  justify-content: center;
  padding: 0;
}

.dw-sidebar__logo {
  width: 42px;
  height: 42px;
  object-fit: contain;
  flex-shrink: 0;
  border-radius: var(--radius-md);
}

.dw-sidebar--collapsed .dw-sidebar__logo {
  width: 36px;
  height: 36px;
}

.dw-sidebar__wordmark {
  font-size: var(--text-lg);
  font-weight: 700;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.dw-sidebar__nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
}

.dw-sidebar__footer {
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.dw-sidebar__user {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
}

.dw-sidebar__user-avatar {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-full);
  background: var(--color-accent-soft);
  color: var(--color-accent-text);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xs);
  font-weight: 700;
  flex-shrink: 0;
}

.dw-sidebar__user-name {
  font-size: var(--text-sm);
  color: var(--color-text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.dw-sidebar__logout-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-1) var(--space-3);
  height: 30px;
  border: none;
  background: transparent;
  color: var(--color-text-muted);
  font-size: var(--text-xs);
  cursor: pointer;
  border-radius: var(--radius-md);
  transition: background var(--transition-fast), color var(--transition-fast);
}

.dw-sidebar__logout-btn:hover {
  background: var(--color-danger-soft);
  color: var(--color-danger);
}

.dw-sidebar__link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  height: 36px;
  padding: 0 var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: background var(--transition-fast), color var(--transition-fast);
  position: relative;
  white-space: nowrap;
  text-decoration: none;
}

.dw-sidebar--collapsed .dw-sidebar__link {
  justify-content: center;
  padding: 0;
}

.dw-sidebar__link:hover {
  background: var(--color-surface-hover);
  color: var(--color-text-primary);
}

.dw-sidebar__link--active {
  background: var(--color-accent-soft);
  color: var(--color-accent-text);
}

.dw-sidebar__link--active::before {
  content: "";
  position: absolute;
  left: -12px;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 14px;
  border-radius: var(--radius-full);
  background: var(--color-accent);
}

.dw-sidebar--collapsed .dw-sidebar__link--active::before {
  left: -8px;
}

.dw-sidebar__link-icon {
  flex-shrink: 0;
  width: 20px;
  text-align: center;
  font-size: var(--text-sm);
}

.dw-sidebar__link-label {
  overflow: hidden;
  text-overflow: ellipsis;
}

.dw-sidebar__collapse-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border: none;
  background: transparent;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  cursor: pointer;
  border-radius: var(--radius-md);
  flex-shrink: 0;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.dw-sidebar__collapse-btn:hover {
  background: var(--color-surface-hover);
  color: var(--color-text-primary);
}

/* Badge counts */
.dw-sidebar__badge {
  margin-left: auto;
  font-size: 10px;
  font-weight: 600;
  min-width: 18px;
  height: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  background: var(--color-surface-hover);
  color: var(--color-text-muted);
  padding: 0 5px;
}

.dw-sidebar__badge--warning {
  background: var(--color-warning-soft);
  color: var(--color-warning);
}

/* Mobile: bottom navigation bar */
@media (max-width: 768px) {
  .dw-sidebar {
    width: 100%;
    height: auto;
    position: fixed;
    bottom: 0;
    top: auto;
    left: 0;
    right: 0;
    flex-direction: row;
    border-right: none;
    border-top: 1px solid var(--color-border);
    padding: var(--space-2) var(--space-3);
    z-index: 100;
    overflow-x: auto;
  }

  .dw-sidebar__top {
    display: none;
  }

  .dw-sidebar__nav {
    flex-direction: row;
    gap: 0;
    flex: 1;
    justify-content: space-around;
  }

  .dw-sidebar__footer {
    display: none;
  }

  .dw-sidebar__link {
    flex-direction: column;
    gap: 2px;
    height: auto;
    padding: var(--space-1) var(--space-2);
    font-size: 10px;
    min-width: 48px;
    align-items: center;
    justify-content: center;
  }

  .dw-sidebar__link-icon {
    font-size: var(--text-base);
  }

  .dw-sidebar__link-label {
    font-size: 10px;
    white-space: nowrap;
  }

  .dw-sidebar__link--active::before {
    display: none;
  }

  .dw-sidebar__badge {
    position: absolute;
    top: -2px;
    right: -2px;
    margin-left: 0;
    min-width: 14px;
    height: 14px;
    font-size: 9px;
  }

  .dw-sidebar__collapse-btn {
    display: none;
  }
}