.app-container{--app-border: #ddd;--app-bg-subtle: #f6f8fa;--app-text-muted: #555;--app-link: #0366d6;--app-bg-card: #fff;display:flex;height:100vh;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Helvetica Neue,Arial,sans-serif}.app-sidebar{width:400px;min-width:350px;padding:1.5rem;border-right:1px solid var(--app-border);display:flex;flex-direction:column;overflow:auto}.app-main{flex:1;overflow:hidden}.app-title{margin:0 0 1.5rem;font-size:1.5rem}.mobile-tabs{display:none}@media (max-width: 768px){.app-container{flex-direction:column;height:auto;min-height:100vh}.app-sidebar{width:100%;min-width:unset;border-right:none;border-bottom:1px solid var(--app-border);padding:1rem;max-height:none;overflow:visible}.app-sidebar.hidden-mobile{display:none}.app-main{flex:1;min-height:50vh}.app-main.hidden-mobile{display:none}.app-title{font-size:1.2rem;margin:0 0 1rem}.mobile-tabs{display:flex;border-bottom:1px solid var(--app-border);background:var(--app-bg-subtle);position:sticky;top:0;z-index:10}.mobile-tabs button{flex:1;padding:.6rem .5rem;border:none;background:transparent;cursor:pointer;font-size:.9rem;font-weight:400;color:var(--app-text-muted);border-bottom:2px solid transparent}.mobile-tabs button.active{font-weight:700;color:var(--app-link);border-bottom-color:var(--app-link);background:var(--app-bg-card)}}:root,[data-app-theme=light]{--color-bg: #fafaf9;--color-bg-card: #ffffff;--color-bg-header: #f5f5f4;--color-bg-subtle: #f6f8fa;--color-text: #1c1c1c;--color-text-soft: #444444;--color-text-secondary: #6b7280;--color-text-muted: #6b717a;--color-text-faint: #888888;--color-accent: #2563eb;--color-accent-hover: #1d4ed8;--color-info: #0969da;--color-info-soft: #ddf4ff;--color-info-soft-strong: #f0f7ff;--color-success: #16a34a;--color-success-strong: #1a7f37;--color-success-soft: #e6f4ea;--color-error: #dc2626;--color-error-strong: #cf222e;--color-error-soft: #ffebe9;--color-warning: 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