:root{--z-local-stack: 100;--z-local-menu: 200;--z-fixed: 300;--z-floating: 400;--z-overlay: 500;--z-modal: 600;--z-critical-overlay: 700;--z-fullscreen: 800;--z-fullscreen-ui: 900;--z-system-toast: 1000}:root{--color-bg-primary: #0a0a0f;--color-bg-sidebar: linear-gradient(180deg, #0f0f14 0%, #0c0c10 100%);--color-text-primary: #e0d4fc;--color-text-secondary: #c4b5fd;--color-text-muted: #a5b4fc;--color-text-dim: #6b6b8a;--color-accent-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);--color-accent-primary: #667eea;--color-border-subtle: rgba(102, 126, 234, .1);--color-border-medium: rgba(102, 126, 234, .2);--color-hover-bg: rgba(102, 126, 234, .1);--color-active-bg: rgba(102, 126, 234, .15);--color-tooltip-bg: rgba(30, 25, 50, .95);--transition-smooth: .2s cubic-bezier(.4, 0, .2, 1);--transition-fast: .15s ease;--sidebar-width: 240px;--sidebar-collapsed: 56px;--shadow-tooltip: 0 4px 16px rgba(0, 0, 0, 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#667eea73}.service-unavailable-retry:active:not(:disabled){transform:translateY(0)}.service-unavailable-retry:disabled{opacity:.8;cursor:not-allowed;transform:none}.service-unavailable-retry .retry-spinner{width:18px;height:18px;border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:retrySpin .8s linear infinite;display:none}.service-unavailable-retry.loading .retry-spinner{display:block}.service-unavailable-retry.loading .retry-text{display:none}@keyframes retrySpin{to{transform:rotate(360deg)}}.service-unavailable-hint{margin-top:24px;font-size:13px;color:var(--color-text-muted);opacity:.5}.service-unavailable-support{margin-top:16px;background:none;border:none;color:var(--color-text-muted);font-size:13px;cursor:pointer;padding:8px 16px;border-radius:6px;opacity:.7;transition:opacity var(--transition-fast),background var(--transition-fast)}.service-unavailable-support:hover{opacity:1;background:var(--color-hover-bg)}.mobile-header{display:none;position:fixed;top:0;left:0;right:0;height:56px;background:var(--color-bg-sidebar);border-bottom:1px solid var(--color-border-subtle);z-index:var(--z-local-menu);align-items:center;padding:0 12px;gap:12px}.mobile-menu-btn{width:44px;height:44px;background:transparent;border:none;border-radius:8px;display:flex;align-items:center;justify-content:center;cursor:pointer;color:var(--color-text-muted);-webkit-tap-highlight-color:transparent}.mobile-menu-btn:active{background:var(--color-hover-bg)}.mobile-menu-btn svg{width:24px;height:24px}.mobile-logo{display:flex;align-items:center;gap:8px;text-decoration:none;color:var(--color-text-primary)}.mobile-logo svg{width:24px;height:24px}.mobile-logo span{font-size:18px;font-weight:300;letter-spacing:-.02em}.sidebar-overlay{display:none;position:fixed;inset:0;background:#0009;z-index:250;opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;-webkit-tap-highlight-color:transparent}.sidebar-overlay.visible{opacity:1;visibility:visible}@media(max-width:768px){.mobile-header{display:flex}.sidebar-overlay{display:block}.sidebar{transform:translate(-100%);transition:transform .3s cubic-bezier(.4,0,.2,1);width:var(--sidebar-width)}.sidebar.mobile-open{transform:translate(0)}.sidebar.collapsed{width:var(--sidebar-width)}.sidebar.collapsed .logo-text,.sidebar.collapsed .nav-item-text{opacity:1;width:auto}.sidebar.collapsed .nav-item{padding:10px 12px;gap:12px}.sidebar.collapsed .collapse-btn{display:none}.sidebar.collapsed .user-info{opacity:1;width:auto;height:auto}.sidebar.collapsed .user-profile-btn{padding:8px}.main-wrapper{margin-left:0!important;padding-top:56px}.service-unavailable-overlay{left:0!important;top:56px}body.sidebar-open{overflow:hidden}}