:root{--bg: #0f1419;--bg-elevated: #171d25;--bg-panel: #1c2430;--border: #2a3544;--text: #e8eef6;--muted: #8b9bb0;--accent: #3d9cf0;--accent-soft: rgba(61, 156, 240, .14);--danger: #f07178;--ok: #7fd99a;--warn: #e6c07b;--font: "Segoe UI", "IBM Plex Sans", system-ui, sans-serif;--mono: "IBM Plex Mono", "Cascadia Code", ui-monospace, monospace;color:var(--text);background:var(--bg);font-family:var(--font);line-height:1.45}*{box-sizing:border-box}html,body,#root{margin:0;min-height:100%;height:100%}body{background:radial-gradient(1200px 600px at 10% -10%,rgba(61,156,240,.12),transparent 55%),radial-gradient(900px 500px at 100% 0%,rgba(127,217,154,.08),transparent 50%),var(--bg)}a{color:var(--accent);text-decoration:none}button,input,textarea,select{font:inherit}button{cursor:pointer}.app-shell{display:grid;grid-template-columns:240px 1fr;min-height:100%}.sidebar{background:#171d25eb;border-right:1px solid var(--border);padding:1.25rem 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