/* Sidebar Styles - Facebook-inspired Light */

.sidebar {
  position: fixed;
  left: 0;
  top: var(--header-height);
  width: var(--sidebar-collapsed); /* Start collapsed on desktop */
  height: calc(100vh - var(--header-height));
  background-color: var(--bg-secondary);
  overflow-y: auto;
  overflow-x: hidden;
  z-index: 50;
  scrollbar-width: thin;
  scrollbar-color: var(--bg-hover) transparent;
  transition: width 0.2s ease;
  padding: var(--spacing-sm);
  border-right: 1px solid var(--border);
}

/* Desktop/Tablet: Expanded state */
.sidebar.expanded {
  width: var(--sidebar-width);
}

.sidebar.expanded .sidebar-item {
  flex-direction: row;
  gap: var(--spacing-md);
  padding: 10px 12px;
  font-size: 15px;
  text-align: left;
  justify-content: flex-start;
  border-radius: 8px;
}

.sidebar.expanded .sidebar-section-title {
  display: block;
}

.sidebar.expanded .sidebar-divider {
  margin: var(--spacing-md) 0;
}

/* Default collapsed state styling */
.sidebar-item {
  flex-direction: column;
  gap: 4px;
  padding: 12px 8px;
  font-size: 10px;
  text-align: center;
  justify-content: center;
  border-radius: 8px;
  margin-bottom: 4px;
}

.sidebar-section-title {
  display: none;
}

.sidebar-divider {
  margin: var(--spacing-sm) 0;
}

.sidebar::-webkit-scrollbar {
  width: 6px;
}

.sidebar::-webkit-scrollbar-track {
  background: transparent;
}

.sidebar::-webkit-scrollbar-thumb {
  background-color: var(--bg-tertiary);
  border-radius: 3px;
}

.sidebar::-webkit-scrollbar-thumb:hover {
  background-color: var(--bg-hover);
}

.sidebar-nav {
  padding: var(--spacing-xs) 0;
}

.sidebar-item {
  display: flex;
  align-items: center;
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 500;
  transition: background-color 0.15s ease;
  cursor: pointer;
}

.sidebar-item:hover {
  background-color: var(--bg-tertiary);
}

.sidebar-item.active {
  background-color: rgba(24, 119, 242, 0.1);
  color: var(--accent);
}

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

.sidebar-item svg {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  color: var(--text-secondary);
  transition: color 0.15s;
}

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

.sidebar-divider {
  height: 1px;
  background-color: var(--border);
  margin: var(--spacing-sm) 0;
}

.sidebar-section-title {
  padding: 8px 12px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Responsive */
@media (max-width: 768px) {
  .sidebar {
    width: var(--sidebar-width) !important;
    transform: translateX(-100%);
    transition: transform 0.3s ease-in-out;
    z-index: 200;
    box-shadow: 4px 0 16px rgba(0, 0, 0, 0.3);
    padding: var(--spacing-md);
  }

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

  .sidebar-item {
    flex-direction: row !important;
    gap: var(--spacing-md) !important;
    padding: 12px 16px !important;
    font-size: 15px !important;
    text-align: left !important;
    justify-content: flex-start !important;
    border-radius: 8px !important;
    margin-bottom: 4px !important;
  }

  .sidebar-section-title {
    display: block !important;
  }

  .sidebar-divider {
    margin: var(--spacing-md) 0 !important;
  }
}

/* Overlay when sidebar is open on mobile ONLY */
@media (max-width: 768px) {
  body.sidebar-open::before {
    content: '';
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.6);
    z-index: 100;
    animation: fadeIn 0.2s ease-out;
  }

  @keyframes fadeIn {
    from {
      opacity: 0;
    }
    to {
      opacity: 1;
    }
  }
}