:root{--bg-primary: #0a0a14;--bg-secondary: #12121f;--bg-tertiary: #1a1a2e;--bg-chat: #0e0e1a;--bg-input: #16162a;--bg-hover: #1e1e38;--bg-active: #252545;--text-primary: #e8e8f0;--text-secondary: #9090a8;--text-tertiary: #606078;--text-inverse: #0a0a14;--accent-primary: #FF9933;--accent-secondary: #667eea;--accent-tertiary: #e94560;--accent-gradient: linear-gradient(135deg, #FF9933 0%, #e94560 100%);--accent-gradient-subtle: linear-gradient(135deg, rgba(255,153,51,.15) 0%, rgba(233,69,96,.15) 100%);--user-bubble: #1a2744;--ai-bubble: #16162a;--border: rgba(255, 255, 255, .06);--border-focus: rgba(255, 153, 51, .4);--shadow-sm: 0 1px 3px rgba(0, 0, 0, .3);--shadow-md: 0 4px 12px rgba(0, 0, 0, .4);--shadow-lg: 0 8px 32px rgba(0, 0, 0, .5);--shadow-glow: 0 0 20px rgba(255, 153, 51, .15);--glass: rgba(255, 255, 255, .03);--glass-border: rgba(255, 255, 255, .08);--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 24px;--radius-full: 9999px;--sidebar-width: 280px;--header-height: 56px;--input-max-height: 200px;--font-sans: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;--font-mono: "JetBrains Mono", "Fira Code", monospace;--transition-fast: .15s cubic-bezier(.4, 0, .2, 1);--transition-normal: .25s cubic-bezier(.4, 0, .2, 1);--transition-slow: .4s cubic-bezier(.4, 0, .2, 1);--code-bg: #0d0d1a;--code-header: #1a1a30;--code-text: #e0e0e8;--success: #4ade80;--warning: #fbbf24;--error: #f87171;--info: #60a5fa}[data-theme=light]{--bg-primary: #f8f9fa;--bg-secondary: #ffffff;--bg-tertiary: #f0f1f3;--bg-chat: #fafbfc;--bg-input: #ffffff;--bg-hover: #eef0f2;--bg-active: #e2e5e9;--text-primary: #1a1a2e;--text-secondary: #606070;--text-tertiary: #909098;--text-inverse: #ffffff;--user-bubble: #eef2ff;--ai-bubble: #f5f5f8;--border: rgba(0, 0, 0, .08);--border-focus: rgba(255, 153, 51, .5);--shadow-sm: 0 1px 3px rgba(0, 0, 0, .08);--shadow-md: 0 4px 12px rgba(0, 0, 0, .1);--shadow-lg: 0 8px 32px rgba(0, 0, 0, .12);--glass: rgba(255, 255, 255, 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