:root{--bg-primary:#ffffff;--bg-secondary:#f4f4f8;--text-primary:#2d3748;--text-secondary:#4a5568;--accent-primary:#4f46e5;--accent-hover:#4338ca;--border-color:#e2e8f0;--success-color:#10b981;--success-hover:#059669;--input-bg:#ffffff;--card-shadow:0 4px 6px -1px rgb(0 0 0 / .1),0 2px 4px -2px rgb(0 0 0 / .1)}[data-theme="dark"]{--bg-primary:#1a1b26;--bg-secondary:#16161e;--text-primary:#c0caf5;--text-secondary:#a9b1d6;--accent-primary:#7aa2f7;--accent-hover:#3b82f6;--border-color:#292e42;--success-color:#9ece6a;--success-hover:#73c046;--input-bg:#1a1b26;--card-shadow:0 4px 6px -1px rgb(0 0 0 / .3),0 2px 4px -2px rgb(0 0 0 / .3)}*{margin:0;padding:0;box-sizing:border-box;transition:background-color .3s ease,color .3s ease}body{font-family:system-ui,-apple-system,sans-serif;background-color:var(--bg-secondary);color:var(--text-primary);line-height:1.6;min-height:100vh}header{padding:2rem 1rem;text-align:center;background-color:var(--bg-primary);border-bottom:1px solid var(--border-color);position:relative}.theme-toggle{position:absolute;top:1rem;right:1rem;padding:.5rem;background:none;border:1px solid var(--border-color);border-radius:.5rem;color:var(--text-primary);cursor:pointer}h1{font-size:2rem;margin-bottom:1.5rem;color:var(--text-primary)}nav{display:flex;justify-content:center;gap:.5rem;flex-wrap:wrap}.tab-button{padding:.75rem 1.5rem;background-color:transparent;border:1px solid var(--border-color);border-radius:.5rem;color:var(--text-secondary);cursor:pointer;font-weight:500;transition:all .2s ease}.tab-button:hover{background-color:var(--accent-primary);color:white}.tab-button.active{background-color:var(--accent-primary);color:white;border-color:var(--accent-primary)}main{max-width:1200px;margin:2rem auto;padding:0 1rem}.tab-content{display:none;background-color:var(--bg-primary);padding:2rem;border-radius:1rem;box-shadow:var(--card-shadow)}.tab-content.active{display:block;animation:fadeIn .3s ease}@keyframes fadeIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.input-group{margin-bottom:1.5rem}label{display:block;margin-bottom:.5rem;color:var(--text-primary);font-weight:500}textarea,input[type="text"]{width:100%;padding:.75rem;border:1px solid var(--border-color);border-radius:.5rem;background-color:var(--input-bg);color:var(--text-primary);font-size:.875rem;font-family:'Monaco','Consolas',monospace;resize:vertical}textarea{min-height:200px}textarea:focus,input[type="text"]:focus{outline:none;border-color:var(--accent-primary);box-shadow:0 0 0 3px rgba(79,70,229,.1)}button:not(.tab-button):not(.theme-toggle){display:inline-flex;align-items:center;justify-content:center;padding:.75rem 1.5rem;background-color:var(--accent-primary);color:white;border:none;border-radius:.5rem;font-weight:500;cursor:pointer;transition:all .2s ease}button:not(.tab-button):not(.theme-toggle):hover{background-color:var(--accent-hover);transform:translateY(-1px)}.copy-button{background-color:var(--success-color);margin-top:1rem}.copy-button:hover{background-color:var(--success-hover)}.output-area{margin-top:2rem;padding:1.5rem;border-radius:.5rem;background-color:var(--bg-secondary);border:1px solid var(--border-color)}.output-area h3{margin-bottom:1rem;color:var(--text-primary)}pre{white-space:pre-wrap;font-family:'Monaco','Consolas',monospace;font-size:.875rem;color:var(--text-primary);line-height:1.5}@media (max-width:640px){header{padding:1rem}nav{flex-direction:column;gap:.5rem}.tab-button{width:100%}main{margin:1rem auto}.tab-content{padding:1rem}}