:root{--bg-primary: #ffffff;--bg-secondary: #f5f5f5;--bg-tertiary: #e8e8e8;--text-primary: #1a1a1a;--text-secondary: #666666;--text-muted: #999999;--accent: #0066cc;--accent-hover: #0052a3;--border: #e0e0e0;--border-light: #f0f0f0;--code-bg: #f6f8fa;--code-text: #24292e;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px rgba(0, 0, 0, .1);--toolbar-height: 48px;--tabs-height: 40px;--status-height: 32px;--formatting-height: 44px;--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, sans-serif;--font-mono: "SF Mono", "Cascadia Code", Consolas, monospace;--safe-area-top: env(safe-area-inset-top, 0px);--safe-area-bottom: env(safe-area-inset-bottom, 0px);--safe-area-left: env(safe-area-inset-left, 0px);--safe-area-right: env(safe-area-inset-right, 0px)}[data-theme=dark]{--bg-primary: #1e1e1e;--bg-secondary: #252526;--bg-tertiary: #2d2d2d;--text-primary: #e0e0e0;--text-secondary: #a0a0a0;--text-muted: #707070;--accent: #4da6ff;--accent-hover: 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