:root{--bg-primary: #0f0f11;--bg-secondary: #1a1a1f;--bg-tertiary: #242429;--bg-hover: #2a2a30;--border: #2e2e36;--text-primary: #f0f0f5;--text-secondary: #9090a0;--text-muted: #606070;--accent: #7c6af7;--accent-hover: #6a58e8;--accent-light: rgba(124, 106, 247, .12);--user-bubble: #1e1b4b;--user-bubble-border: #3730a3;--assistant-bubble: #1a1a1f;--success: #22c55e;--danger: #ef4444;--shadow: 0 4px 24px rgba(0, 0, 0, .4);--radius: 14px;--radius-sm: 8px;--sidebar-width: 260px;--header-height: 60px;--font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--mono: "JetBrains Mono", "Fira Code", "Cascadia Code", monospace}[data-theme=light]{--bg-primary: #f8f8fc;--bg-secondary: #ffffff;--bg-tertiary: #f0f0f6;--bg-hover: #e8e8f0;--border: #e2e2ec;--text-primary: #1a1a2e;--text-secondary: #555570;--text-muted: #909098;--accent: #6d5ef5;--accent-hover: #5b4de0;--accent-light: rgba(109, 94, 245, .1);--user-bubble: #ede9fe;--user-bubble-border: #c4b5fd;--assistant-bubble: 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