:root{--base03: #1a1a1e;--base02: #242428;--base01: #505058;--base00: #707075;--base0: #a0a0a5;--base1: #c8c8cc;--base2: #e0e0e0;--base3: #f5f5f5;--yellow: #f5a623;--orange: #e8832a;--red: #e05252;--magenta: #d35db3;--violet: #8a7fc7;--blue: #5a9fd4;--cyan: #5abfb5;--green: #7cb342;--bg-primary: var(--base03);--bg-secondary: var(--base02);--bg-highlight: #2e2a25;--text-primary: var(--base0);--text-secondary: var(--base01);--text-emphasis: var(--base1);--border-color: var(--base01);--accent: var(--orange);--accent-hover: var(--yellow)}*{margin:0;padding:0;box-sizing:border-box}html,body,#root{height:100%;width:100%;overflow:hidden}body{font-family:Inter,system-ui,-apple-system,sans-serif;font-size:13px;background:var(--bg-primary);color:var(--text-primary)}.app-layout{display:flex;flex-direction:column;height:100vh;background:var(--bg-primary)}.main-content{display:flex;flex:1;overflow:hidden;padding-left:4px}.highway-area{flex:1;display:flex;align-items:stretch;justify-content:center;background:var(--bg-primary);border-right:1px solid var(--base02);overflow:hidden}.highway-area canvas{display:block}.sidebar{width:280px;min-width:280px;background:var(--bg-secondary);border-left:1px solid var(--base01);overflow-y:auto;padding:12px}.sidebar-tabs{display:flex;flex-direction:column;height:100%}.sidebar-tabs-bar{display:flex;gap:4px;margin-bottom:12px;border-bottom:1px solid var(--base01);padding-bottom:8px}.sidebar-tabs-bar button{flex:1;padding:6px 12px;background:transparent;border:1px solid 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label{color:var(--text-secondary);font-size:11px;text-transform:uppercase;letter-spacing:.5px}.metadata-field input[type=text],.metadata-field input[type=number]{background:var(--bg-primary);color:var(--text-primary);border:1px solid var(--base01);border-radius:4px;padding:6px 8px;font-family:inherit;font-size:13px;transition:border-color .15s}.metadata-field input:hover{border-color:var(--accent)}.metadata-field input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 1px var(--accent)}.metadata-panel button{background:var(--bg-primary);color:var(--accent);border:1px solid var(--accent);border-radius:4px;padding:6px 12px;font-family:inherit;font-size:12px;cursor:pointer;transition:background .15s,color .15s;margin-top:4px}.metadata-panel button:hover{background:var(--accent);color:var(--bg-primary)}.metadata-lookup-panel h4{color:var(--text-emphasis);font-size:13px;margin-bottom:8px}.metadata-lookup-actions{display:flex;gap:6px;margin-top:8px;margin-bottom:8px}.metadata-lookup-error{color:var(--red);font-size:12px;margin:6px 0}.metadata-lookup-results{list-style:none;padding:0;margin:8px 0 0;display:flex;flex-direction:column;gap:4px;max-height:240px;overflow-y:auto}.metadata-lookup-result{display:flex;flex-direction:column;gap:2px;width:100%;text-align:left;padding:8px 10px;background:var(--bg-primary);border:1px solid var(--base01);border-radius:4px;cursor:pointer;font-family:inherit;font-size:12px;color:var(--text-primary);transition:border-color 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