:root{--bg: #f5f5f5;--surface: #ffffff;--text: #1a1a1a;--text-muted: #666666;--primary: #2563eb;--primary-hover: #1d4ed8;--success: #16a34a;--error: #dc2626;--border: #e5e5e5}[data-theme=dark]{--bg: #121212;--surface: #1e1e1e;--text: #f5f5f5;--text-muted: #a0a0a0;--primary: #60a5fa;--primary-hover: #3b82f6;--success: #22c55e;--error: #f87171;--border: #333333}html,body,#root{height:100%}.app{min-height:100%;display:flex;flex-direction:column;background:var(--bg)}.main{flex:1;padding:1rem 1rem 5rem;overflow-y:auto}.bottom-nav{position:fixed;bottom:0;left:0;right:0;display:flex;background:var(--surface);border-top:1px solid var(--border);padding:.5rem 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