/* ========================================
   SIDEBAR — Navegació desktop
   Glassmorphism + collapsible
   ======================================== */

/* Sidebar només visible a desktop */
.nav-sidebar {
  display: none;
}

@media (min-width: 1024px) {
  /* ===== SIDEBAR STRUCTURE ===== */
  .nav-sidebar {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: 56px;
    z-index: 990;
    overflow: hidden;
    transition: width 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    border-right: 1px solid var(--color-border);
  }

  .nav-sidebar.expanded {
    width: 240px;
  }

  /* ===== GLASSMORPHISM ===== */
  .nav-sidebar.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
    border-right: 1px solid var(--glass-border);
  }

  @supports not (backdrop-filter: blur(1px)) {
    .nav-sidebar.glass {
      background: var(--color-bg-card);
      border-right: 1px solid var(--color-border);
    }
  }

  /* ===== HEADER AREA (toggle btn — alineat amb header) ===== */
  .sidebar-header {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 56px; /* mateixa alçada que header desktop */
    flex-shrink: 0;
    padding: 0 4px;
    border-bottom: var(--glass-border-bottom);
  }

  .sidebar-toggle-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all 0.15s ease;
  }

  .sidebar-toggle-btn:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
  }

  .sidebar-toggle-btn .material-symbols-outlined {
    font-size: 22px;
    transition: transform 0.2s ease;
  }

  .nav-sidebar.expanded .sidebar-toggle-btn .material-symbols-outlined {
    transform: rotate(180deg);
  }

  /* ===== NAV CONTENT ===== */
  .sidebar-nav {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: var(--spacing-xs) 0;
    scrollbar-width: thin;
    scrollbar-color: var(--color-border) transparent;
  }

  .sidebar-nav::-webkit-scrollbar {
    width: 4px;
  }

  .sidebar-nav::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 2px;
  }

  /* ===== GROUP HEADER ===== */
  .sidebar-group-header {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-tertiary);
    padding: var(--spacing-md) var(--spacing-md) var(--spacing-xs);
    white-space: nowrap;
    overflow: hidden;
    opacity: 0;
    transition: opacity 0.15s ease;
  }

  .nav-sidebar.expanded .sidebar-group-header {
    opacity: 1;
  }

  /* Separador discret quan collapsed (substitueix el títol invisible) */
  .sidebar-group-divider {
    height: 1px;
    margin: var(--spacing-xs) 12px;
    background: var(--color-border);
    opacity: 0.5;
    transition: opacity 0.15s ease;
  }

  /* Quan expanded, el títol ja fa la separació → amagar línia */
  .nav-sidebar.expanded .sidebar-group-divider {
    opacity: 0;
    margin: 0 12px;
    height: 0;
  }

  /* ===== NAV ITEM ===== */
  .sidebar-item {
    position: relative;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    height: 44px;
    margin: 2px 4px;
    padding: 0 12px;
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    text-decoration: none;
    white-space: nowrap;
    transition: all 0.15s ease;
    cursor: pointer;
  }

  .sidebar-item:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
    text-decoration: none;
  }

  .sidebar-item.active {
    background: rgba(19, 117, 188, 0.1);
    color: var(--color-primary);
  }

  @media (prefers-color-scheme: dark) {
    .sidebar-item.active {
      background: rgba(10, 132, 255, 0.15);
    }
  }

  .sidebar-item .material-symbols-outlined {
    font-size: 22px;
    flex-shrink: 0;
    width: 24px;
    text-align: center;
  }

  .sidebar-item.active .material-symbols-outlined {
    font-weight: 600;
  }

  .sidebar-item-label {
    font-size: var(--font-size-sm);
    font-weight: 500;
    opacity: 0;
    transition: opacity 0.15s ease;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .nav-sidebar.expanded .sidebar-item-label {
    opacity: 1;
  }

  /* ===== BADGE ===== */
  .sidebar-badge {
    position: absolute;
    top: 6px;
    left: 28px;
    min-width: 16px;
    height: 16px;
    padding: 0 4px;
    background: var(--color-danger);
    color: white;
    font-size: 10px;
    font-weight: 600;
    border-radius: 8px;
    display: none;
    align-items: center;
    justify-content: center;
    line-height: 1;
  }

  .sidebar-badge.visible {
    display: flex;
  }

  .nav-sidebar.expanded .sidebar-badge {
    position: static;
    margin-left: auto;
    top: auto;
    left: auto;
  }

  /* ===== BODY DISPLACEMENT ===== */
  body.has-sidebar {
    padding-left: 56px;
    transition: padding-left 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  }

  body.has-sidebar.sidebar-expanded {
    padding-left: 240px;
  }

  body.has-sidebar .app-header {
    left: 56px;
    transition: left 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  }

  body.has-sidebar.sidebar-expanded .app-header {
    left: 240px;
  }

  /* Reduir padding esquerre del header quan sidebar present */
  body.has-sidebar .header-container {
    padding-left: var(--spacing-xs);
  }

  /* ===== INVENTARI: filtres fixos desplaçats amb sidebar ===== */
  body.has-sidebar .filters-section {
    left: 56px;
    transition: left 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  }

  body.has-sidebar.sidebar-expanded .filters-section {
    left: 240px;
  }
}

/* ===== REDUCED MOTION ===== */
@media (prefers-reduced-motion: reduce) {
  .nav-sidebar,
  .sidebar-toggle-btn .material-symbols-outlined,
  .sidebar-item-label,
  .sidebar-group-header,
  body.has-sidebar,
  body.has-sidebar .app-header {
    transition: none !important;
  }
}