.whatsapp-button{position:fixed;bottom:2rem;right:2rem;background:var(--text-primary);color:var(--bg-primary);padding:1rem 1.5rem;border-radius:50px;display:flex;align-items:center;gap:.75rem;text-decoration:none;font-weight:700;font-size:1rem;box-shadow:var(--shadow-md);transition:all .3s ease;z-index:999}.whatsapp-button:hover{background:var(--text-secondary);transform:translateY(-2px);box-shadow:var(--shadow-lg)}.whatsapp-button svg{width:24px;height:24px;flex-shrink:0}.whatsapp-button span{white-space:nowrap}@media (max-width: 768px){.whatsapp-button{bottom:1.5rem;right:1.5rem;padding:.875rem 1.25rem;font-size:.9rem}.whatsapp-button span{display:none}.whatsapp-button svg{width:28px;height:28px}}.App{min-height:100vh;display:flex;flex-direction:column}main{flex:1}.footer{background-color:var(--bg-dark);color:#fff;text-align:center;padding:2rem;margin-top:4rem}.footer p{margin:0;opacity:.8}@media (prefers-reduced-motion: no-preference){*{scroll-behavior:smooth}}*{margin:0;padding:0;box-sizing:border-box}:root{--primary-color: #000000;--primary-dark: #000000;--secondary-color: #000000;--accent-color: #000000;--text-primary: #000000;--text-secondary: #4a4a4a;--bg-primary: #ffffff;--bg-secondary: #f5f5f5;--bg-dark: #000000;--border-color: #e0e0e0;--shadow-sm: 0 2px 8px rgba(0, 0, 0, .08);--shadow-md: 0 4px 16px rgba(0, 0, 0, .12);--shadow-lg: 0 8px 32px rgba(0, 0, 0, .16)}:root.dark-mode{--text-primary: #ffffff;--text-secondary: #a0a0a0;--bg-primary: #0a0a0a;--bg-secondary: #1a1a1a;--bg-dark: #000000;--border-color: #2a2a2a;--shadow-sm: 0 2px 8px rgba(0, 0, 0, .3);--shadow-md: 0 4px 16px rgba(0, 0, 0, .4);--shadow-lg: 0 8px 32px rgba(0, 0, 0, .5)}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;color:var(--text-primary);background-color:var(--bg-primary);line-height:1.7}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}html{scroll-behavior:smooth}