:root{--bg-primary: #0f1117;--bg-secondary: #1a1d27;--bg-tertiary: #242836;--bg-hover: #2d3244;--bg-input: #1e2235;--text-primary: #e8eaed;--text-secondary: #9aa0a8;--text-muted: #6b7280;--text-inverse: #ffffff;--accent-primary: #3b82f6;--accent-hover: #2563eb;--accent-light: rgba(59, 130, 246, .15);--accent-glow: rgba(59, 130, 246, .3);--user-bubble: #3b82f6;--user-text: #ffffff;--bot-bubble: #242836;--bot-text: #e8eaed;--color-success: #10b981;--color-warning: #f59e0b;--color-danger: #ef4444;--color-info: #6366f1;--color-orange: #f97316;--border-color: #2d3244;--border-subtle: #1e2235;--border-radius: 12px;--border-radius-lg: 16px;--border-radius-sm: 8px;--border-radius-pill: 999px;--shadow-lg: 0 20px 60px rgba(0, 0, 0, .4);--shadow-md: 0 8px 24px rgba(0, 0, 0, .3);--shadow-sm: 0 2px 8px rgba(0, 0, 0, .2);--shadow-glow: 0 0 20px rgba(59, 130, 246, .25);--chat-width: 420px;--chat-height: 620px;--bubble-size: 56px;--font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-mono: "SF Mono", "Fira Code", monospace;--font-size-xs: .7rem;--font-size-sm: .8rem;--font-size-base: .875rem;--font-size-lg: 1rem;--transition-fast: .15s ease;--transition-normal: .2s ease;--transition-slow: .3s ease-out;--modal-backdrop: rgba(0, 0, 0, .7)}[data-theme=light]{--bg-primary: #ffffff;--bg-secondary: #f8f9fa;--bg-tertiary: #f0f1f3;--bg-hover: #e9ecef;--bg-input: #ffffff;--text-primary: #1a1d27;--text-secondary: #4b5563;--text-muted: #9ca3af;--text-inverse: #ffffff;--bot-bubble: #f0f1f3;--bot-text: #1a1d27;--accent-light: rgba(59, 130, 246, .1);--accent-glow: rgba(59, 130, 246, .15);--border-color: #e2e5e9;--border-subtle: #f0f1f3;--shadow-lg: 0 20px 60px rgba(0, 0, 0, .12);--shadow-md: 0 8px 24px rgba(0, 0, 0, .08);--shadow-sm: 0 2px 8px rgba(0, 0, 0, .06);--shadow-glow: 0 0 20px rgba(59, 130, 246, .12);--modal-backdrop: rgba(0, 0, 0, .4)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-family);background:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}