:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media(prefers-color-scheme:light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background-color:#f4f7f6;margin:0;padding:20px}.app-container{max-width:1200px;margin:0 auto;padding:0 20px}h1{color:#333;text-align:center;margin-bottom:30px}.header-controls{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:20px;margin-bottom:20px}.search-bar{flex-grow:1;min-width:250px;padding:12px 15px;border:1px solid #ccc;border-radius:8px;font-size:16px}.login-box{display:flex;align-items:center;gap:10px;background-color:#f0f4f8;border:1px solid #d6e0ea;border-radius:8px;padding:10px}.login-box input{padding:8px;border:1px solid #ccc;border-radius:4px}.login-box button,.logout-button{padding:8px 12px;background-color:#28a745;color:#fff;border:none;border-radius:4px;cursor:pointer;white-space:nowrap}.logout-button{background-color:#dc3545}.add-contact-container{margin-bottom:20px}.add-contact-toggle{width:100%;padding:12px;font-size:16px;background-color:#007bff;color:#fff;border:none;border-radius:8px;cursor:pointer}.add-contact-toggle:hover{background-color:#0056b3}.add-contact-form{background-color:#fff;border-radius:8px;padding:20px;margin-top:15px;box-shadow:0 2px 4px #0000000d}.add-contact-form h3{margin:0 0 15px}.add-contact-form input{width:100%;padding:10px;margin-bottom:10px;border:1px solid #ccc;border-radius:4px;box-sizing:border-box}.add-contact-form button{width:100%;padding:10px;background-color:#28a745;color:#fff;border:none;border-radius:4px;cursor:pointer;font-size:16px}.contact-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px}.contact-card{position:relative;background-color:#fff;border:1px solid #e0e0e0;border-radius:8px;padding:20px;box-shadow:0 4px 8px #0000000d;transition:all .2s ease-in-out}.contact-card:hover{transform:translateY(-5px);box-shadow:0 6px 12px #00000014}.contact-card h3{margin:0 0 10px;color:#0056b3}.contact-card p{margin:5px 0;color:#555;word-wrap:break-word}.delete-button{position:absolute;top:10px;right:10px;background-color:#dc3545;color:#fff;border:none;border-radius:50%;width:24px;height:24px;font-size:16px;font-weight:700;line-height:24px;text-align:center;padding:0;cursor:pointer;opacity:.7;transition:opacity .2s}.delete-button:hover{opacity:1}.error-message{color:#d93025;font-weight:700;text-align:center}