:root[data-theme=dark]{--bg-app: #0f172a;--bg-sidebar: #020617;--bg-panel: #1e293b;--bg-hover: #334155;--text-primary: #f8fafc;--text-secondary: #94a3b8;--border: #1e293b;--accent: #38bdf8;--accent-text: #0ea5e9;--glass: rgba(15, 23, 42, .8);--shadow-color: rgba(0, 0, 0, .5)}:root[data-theme=light]{--bg-app: #f1f5f9;--bg-sidebar: #ffffff;--bg-panel: #ffffff;--bg-hover: #e2e8f0;--text-primary: #0f172a;--text-secondary: #64748b;--border: #e2e8f0;--accent: #0ea5e9;--accent-text: #0284c7;--glass: rgba(255, 255, 255, .8);--shadow-color: rgba(0, 0, 0, .1)}body{margin:0;background:var(--bg-app);color:var(--text-primary);font-family:Inter,sans-serif;overflow:hidden;transition:background .3s,color .3s}.app-container{display:grid;grid-template-columns:280px 1fr;height:100vh}.sidebar{background:var(--bg-sidebar);border-right:1px solid var(--border);display:flex;flex-direction:column;z-index:10;box-shadow:4px 0 24px 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