CUB-50: Implement Adaptive Navigation Component
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cubecraft-agents[bot]
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// ============================================================================
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// Adaptive Navigation — Desktop sidebar / Mobile header
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// Desktop (≥768px): 72px sidebar with full navigation items
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// Mobile (<768px): 56px compact header with hamburger menu
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// ============================================================================
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// ---------------------------------------------------------------------------
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// Desktop Sidebar (visible ≥768px)
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// ---------------------------------------------------------------------------
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.adaptive-nav__sidebar {
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display: flex;
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flex-direction: column;
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width: var(--cc-nav-rail-collapsed-width, 72px);
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min-height: 100vh;
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background-color: var(--cc-surface-container-high);
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border-right: 1px solid var(--cc-outline);
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z-index: 10;
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}
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.adaptive-nav__sidebar-header {
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display: flex;
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align-items: center;
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justify-content: center;
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height: 64px;
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border-bottom: 1px solid var(--cc-outline);
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}
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.adaptive-nav__brand {
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font-size: 18px;
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font-weight: 700;
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color: var(--status-active);
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letter-spacing: 0.04em;
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}
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.adaptive-nav__sidebar-nav {
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flex: 1;
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padding-top: 8px;
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}
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.adaptive-nav__sidebar-item {
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display: flex;
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flex-direction: column;
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align-items: center;
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justify-content: center;
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gap: 4px;
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min-height: 56px;
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padding: 8px 0;
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margin: 2px 8px;
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border-radius: 28px;
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color: var(--cc-on-surface-variant);
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text-decoration: none;
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transition: background-color 150ms ease, color 150ms ease;
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&:hover {
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background-color: rgba(255, 255, 255, 0.08);
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color: var(--cc-on-surface);
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}
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&--active {
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background-color: var(--status-active-bg);
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color: var(--status-active);
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.adaptive-nav__sidebar-label {
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font-weight: 500;
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}
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}
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}
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.adaptive-nav__sidebar-label {
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font-size: 11px;
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font-weight: 400;
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letter-spacing: 0.02em;
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white-space: nowrap;
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}
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// ---------------------------------------------------------------------------
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// Sidebar Footer — LIVE indicator + action buttons
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// ---------------------------------------------------------------------------
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.adaptive-nav__sidebar-footer {
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display: flex;
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flex-direction: column;
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align-items: center;
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gap: 8px;
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padding: 12px 0 20px;
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border-top: 1px solid var(--cc-outline);
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}
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.adaptive-nav__sidebar-actions {
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display: flex;
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gap: 4px;
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.mat-mdc-icon-button {
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color: var(--cc-on-surface-variant) !important;
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--mdc-icon-button-icon-size: 20px;
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&:hover {
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color: var(--cc-on-surface) !important;
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}
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}
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}
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// ---------------------------------------------------------------------------
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// LIVE Status Indicator
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// ---------------------------------------------------------------------------
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.adaptive-nav__live {
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display: flex;
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align-items: center;
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gap: 6px;
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padding: 4px 8px;
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border-radius: 16px;
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transition: background-color 200ms ease;
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&--connected {
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background-color: var(--status-active-bg);
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}
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}
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.adaptive-nav__live-dot {
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display: inline-block;
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width: 8px;
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height: 8px;
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min-width: 8px;
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border-radius: 50%;
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background-color: var(--status-error);
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transition: background-color 200ms ease;
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&--connected {
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background-color: var(--status-active);
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animation: pulse-active 2s ease-in-out infinite;
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}
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}
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.adaptive-nav__live-chip {
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font-size: 11px !important;
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font-weight: 600 !important;
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letter-spacing: 0.06em;
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height: 24px !important;
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min-height: 24px !important;
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padding: 0 8px !important;
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color: var(--status-active) !important;
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--mdc-chip-elevated-container-color: transparent;
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background: transparent !important;
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border: none !important;
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box-shadow: none !important;
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}
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.adaptive-nav__live-text {
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font-size: 12px;
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font-weight: 600;
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letter-spacing: 0.06em;
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color: var(--status-active);
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}
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// ---------------------------------------------------------------------------
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// Mobile Header (visible <768px)
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// ---------------------------------------------------------------------------
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.adaptive-nav__mobile-header {
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display: none; // Hidden on desktop, shown on mobile via media query
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align-items: center;
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height: 56px;
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padding: 0 12px;
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background-color: var(--cc-surface-container-high);
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border-bottom: 1px solid var(--cc-outline);
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z-index: 20;
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gap: 8px;
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}
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.adaptive-nav__hamburger {
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color: var(--cc-on-surface-variant) !important;
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&:hover {
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color: var(--cc-on-surface) !important;
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}
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}
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.adaptive-nav__mobile-title {
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flex: 1;
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font-size: 20px;
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font-weight: 500;
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color: var(--cc-on-surface);
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margin: 0;
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white-space: nowrap;
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overflow: hidden;
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text-overflow: ellipsis;
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}
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.adaptive-nav__live--mobile {
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padding: 4px 10px;
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border-radius: 16px;
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.adaptive-nav__live-text {
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font-size: 11px;
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font-weight: 700;
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}
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}
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.adaptive-nav__mobile-action {
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color: var(--cc-on-surface-variant) !important;
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&:hover {
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color: var(--cc-on-surface) !important;
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}
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}
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// ---------------------------------------------------------------------------
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// Mobile Drawer
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// ---------------------------------------------------------------------------
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.adaptive-nav__overlay {
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position: fixed;
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inset: 0;
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background-color: rgba(0, 0, 0, 0.5);
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z-index: 40;
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}
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.adaptive-nav__mobile-drawer {
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position: fixed;
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top: 56px; // Below header
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left: 0;
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bottom: 0;
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width: 280px;
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max-width: 80vw;
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background-color: var(--cc-surface-container);
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border-right: 1px solid var(--cc-outline);
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z-index: 50;
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padding: 12px 0;
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overflow-y: auto;
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animation: slide-in-left 200ms cubic-bezier(0.4, 0, 0.2, 1);
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}
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.adaptive-nav__drawer-item {
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display: flex;
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align-items: center;
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gap: 16px;
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min-height: 48px;
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padding: 0 20px;
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color: var(--cc-on-surface-variant);
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text-decoration: none;
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transition: background-color 150ms ease, color 150ms ease;
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&:hover {
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background-color: rgba(255, 255, 255, 0.08);
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color: var(--cc-on-surface);
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}
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&--active {
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background-color: var(--status-active-bg);
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color: var(--status-active);
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.adaptive-nav__drawer-label {
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font-weight: 500;
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}
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}
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}
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.adaptive-nav__drawer-label {
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font-size: 14px;
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font-weight: 400;
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white-space: nowrap;
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}
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// ---------------------------------------------------------------------------
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// Drawer slide-in animation
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// ---------------------------------------------------------------------------
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@keyframes slide-in-left {
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from {
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transform: translateX(-100%);
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}
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to {
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transform: translateX(0);
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}
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}
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// ---------------------------------------------------------------------------
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// Media Queries — Layout Switch
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// ---------------------------------------------------------------------------
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// Desktop (≥768px): Show sidebar, hide mobile header
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// Mobile (<768px): Hide sidebar, show compact header
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// ---------------------------------------------------------------------------
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@media (min-width: 768px) {
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.adaptive-nav__sidebar {
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display: flex;
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}
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.adaptive-nav__mobile-header {
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display: none;
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}
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// Hide mobile drawer and overlay on desktop
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.adaptive-nav__overlay,
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.adaptive-nav__mobile-drawer {
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display: none;
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}
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}
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@media (max-width: 767px) {
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.adaptive-nav__sidebar {
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display: none;
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}
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.adaptive-nav__mobile-header {
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display: flex;
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}
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}
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// ---------------------------------------------------------------------------
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// Accessibility: Reduced Motion
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// ---------------------------------------------------------------------------
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@media (prefers-reduced-motion: reduce) {
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.adaptive-nav__live-dot--connected {
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animation: none;
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}
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.adaptive-nav__mobile-drawer {
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animation: none;
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}
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}
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