:root{color-scheme:light;--primary: #171717;--on-primary: #ffffff;--ink: #171717;--body: #4d4d4d;--mute: #888888;--hairline: #ebebeb;--hairline-strong: #a1a1a1;--canvas: #ffffff;--canvas-soft: #fafafa;--canvas-soft-2: #f5f5f5;--link: #0070f3;--link-deep: #0761d1;--link-bg-soft: #d3e5ff;--error: #ee0000;--error-soft: #f7d4d6;--error-deep: #c50000;--warning: #f5a623;--warning-soft: #ffefcf;--font-sans: Geist, Inter, system-ui, -apple-system, "Segoe UI", sans-serif;--font-mono: "Geist Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;--radius-xs: 4px;--radius-sm: 6px;--radius-md: 8px;--radius-lg: 12px;--shadow-card: 0px 1px 1px rgba(0, 0, 0, .05), 0px 2px 2px rgba(0, 0, 0, .1), inset 0 0 0 1px rgba(0, 0, 0, .08);--shadow-float: 0px 2px 2px rgba(0, 0, 0, .1), 0px 8px 16px -4px rgba(0, 0, 0, .1), inset 0 0 0 1px rgba(0, 0, 0, .08)}*{box-sizing:border-box}html,body,#root{min-height:100%;margin:0}body{background:var(--canvas-soft);color:var(--ink);font-family:var(--font-sans);font-size:16px;font-weight:400;line-height:24px;letter-spacing:0;-webkit-font-smoothing:antialiased}button,input,select,textarea{color:inherit;font:inherit;letter-spacing:0}button,a{-webkit-tap-highlight-color:transparent}code{font-family:var(--font-mono);font-size:.75rem;line-height:16px;overflow-wrap:anywhere}.app-shell{display:flex;min-height:100vh}.sidebar{display:flex;width:264px;flex:0 0 264px;flex-direction:column;gap:16px;border-right:1px solid var(--hairline);background:var(--canvas);padding:16px}.brand{display:flex;min-height:48px;align-items:center;gap:8px;color:var(--ink);font-size:20px;font-weight:600;line-height:28px}.nav{display:flex;flex:1;flex-direction:column;gap:4px}.nav-item,.sidebar-action{display:flex;width:100%;min-height:44px;align-items:center;gap:8px;border:1px solid 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var(--hairline);border-radius:var(--radius-md);background:var(--canvas);box-shadow:var(--shadow-card);margin-bottom:24px;padding:24px}.panel-title{margin-bottom:16px;font-size:20px;font-weight:600;line-height:28px;letter-spacing:0}.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.form-grid label,.export-controls label{display:flex;min-width:0;flex-direction:column;gap:8px;color:var(--body);font-size:14px;font-weight:500;line-height:20px}.wide{grid-column:1 / -1}input,select,textarea{width:100%;min-height:40px;border:1px solid var(--hairline);border-radius:var(--radius-sm);background:var(--canvas);color:var(--ink);padding:8px 12px;font-size:14px;line-height:20px;transition:border-color .15s ease,background-color .15s ease,box-shadow .15s 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.panel-title{margin-bottom:0}.stats{display:flex;flex-wrap:wrap;gap:8px;color:var(--body);font-family:var(--font-mono);font-size:12px;line-height:16px}.endpoint-row{display:flex;min-width:0;align-items:center;gap:8px;border:1px solid var(--hairline);border-radius:var(--radius-sm);background:var(--canvas-soft);margin:16px 0;padding:8px}.endpoint-row code{min-width:0;flex:1;font-size:.8125rem}.yaml-preview{max-height:520px;overflow:auto;border-radius:var(--radius-md);background:var(--primary);color:#f2f2f2;margin:0;padding:24px;font-family:var(--font-mono);font-size:.8125rem;line-height:20px;white-space:pre}.spin{animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}@media (max-width: 768px){.app-shell{flex-direction:column}.sidebar{width:auto;flex:none;gap:8px;border-right:0;border-bottom:1px solid var(--hairline);padding:8px 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