:root{--primary-color: #007bff;--secondary-color: #0056b3;--danger-color: #dc3545;--background-color: #fff;--text-color: #333;--shadow-color: rgba(0, 0, 0, .1);--border-radius: 8px;--border-color: #ccc;--button-padding: 12px 25px;--font-size: 16px;--small-font-size: 14px;--padding: 20px}body{font-family:Arial,sans-serif;background-color:var(--background-color);color:var(--text-color);margin:0;padding:0;display:flex;justify-content:center;align-items:center;min-height:100vh;text-align:center}.app-container{display:flex;flex-direction:column;align-items:center;padding:var(--padding)}.card{background:var(--background-color);padding:var(--padding);border-radius:var(--border-radius);box-shadow:0 4px 8px var(--shadow-color);width:100%;max-width:600px;text-align:center}label{display:block;margin:10px 0;text-align:left;font-weight:700}input[type=number]{width:100%;padding:10px;border-radius:var(--border-radius);border:1px solid var(--border-color);margin-top:5px;outline:none;transition:border .3s ease}input[type=number]:focus{border-color:var(--primary-color)}input[type=checkbox]{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:18px;height:18px;border:2px solid var(--primary-color);border-radius:4px;background-color:transparent;cursor:pointer;transition:background-color .2s ease;margin-right:10px}input[type=checkbox]:checked{background-color:var(--primary-color)}input[type=checkbox]:checked:after{content:"✓";display:block;color:#fff;font-size:12px;text-align:center;line-height:1.2}button{padding:var(--button-padding);margin-top:20px;border:none;border-radius:var(--border-radius);background-color:var(--primary-color);color:#fff;cursor:pointer;font-size:var(--font-size);transition:background-color .3s ease-in-out,transform .2s ease-in-out}button:hover{background-color:var(--secondary-color);transform:translateY(-2px)}p{margin:15px 0;font-size:1rem}code{font-weight:700;color:#d63384}.strength-meter{height:10px;width:100%;background-color:#e0e0e0;margin-top:10px;border-radius:5px;overflow:hidden}.strength-meter-bar{height:100%;transition:width .3s}.strength-meter-bar.very-weak{background-color:var(--danger-color)}.strength-meter-bar.weak{background-color:orange}.strength-meter-bar.medium{background-color:#ff0}.strength-meter-bar.strong{background-color:green}.password-container{display:flex;flex-direction:column;align-items:center;margin:20px 0}.password-item{margin:10px 0}.eye-icon{border:none;background:none;cursor:pointer;font-size:20px;margin-left:10px;color:var(--text-color);transition:color .3s ease}.eye-icon:hover{color:var(--primary-color)}@media (max-width: 600px){.card{padding:15px}button{padding:10px 20px;font-size:var(--small-font-size)}}@media (prefers-color-scheme: dark){:root{--background-color: #121212;--text-color: #ffffff;--primary-color: #bb86fc;--secondary-color: #3700b3;--danger-color: #cf6679;--shadow-color: rgba(255, 255, 255, .1);--border-color: #333}}:root{font-family:Inter,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}}