: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, #141414 0%, #111111 100%);--color-text-primary: #e0d4fc;--color-text-secondary: #c4b5fd;--color-text-muted: #a5b4fc;--color-text-dim: #878797;--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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.credit-badge-btn{margin-top:8px}.main-wrapper{flex:1;margin-left:var(--sidebar-width);display:flex;flex-direction:column;min-height:100vh;min-width:0;position:relative;overflow-x:hidden;transition:margin-left var(--transition-smooth)}.sidebar.collapsed~.main-wrapper{margin-left:var(--sidebar-collapsed)}.sidebar.collapsed.settings-panel-open~.main-wrapper{margin-left:var(--sidebar-width)}.main-content{flex:1;position:relative;z-index:1;min-width:0}.service-unavailable-overlay{position:fixed;top:0;right:0;bottom:0;left:var(--sidebar-width);background:#0a0a0ff7;display:flex;flex-direction:column;align-items:center;justify-content:center;z-index:var(--z-overlay);opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease,left var(--transition-smooth)}.sidebar.collapsed~.main-wrapper 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