:root{--bg: #f8fafc;--bg-nav: rgba(255, 255, 255, .95);--bg-card: #ffffff;--bg-hover: rgba(59, 130, 246, .08);--bg-input: #ffffff;--text: #1e293b;--text-muted: #64748b;--border-color: #e2e8f0;--accent: #3b82f6;--accent-light: #60a5fa;--gradient: linear-gradient(135deg, #3b82f6, #6366f1)}body.light-theme{--bg: #f1f5f9;--bg-nav: rgba(255, 255, 255, .95);--bg-card: #ffffff;--bg-hover: rgba(59, 130, 246, .08);--bg-input: #ffffff;--text: #1e293b;--text-muted: #64748b;--border-color: #e2e8f0}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);transition:background .3s,color .3s}body{--bg: #0f172a;--bg-nav: rgba(15, 23, 42, .95);--bg-card: #1e293b;--bg-hover: rgba(99, 102, 241, .15);--bg-input: #1e293b;--text: #f1f5f9;--text-muted: #94a3b8;--border-color: rgba(99, 102, 241, .2);--accent: #60a5fa;--accent-light: #818cf8;--gradient: linear-gradient(135deg, #3b82f6, #6366f1)}