: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}.page-center{display:flex;justify-content:center;align-items:center;height:100vh;width:100vw}@media(prefers-color-scheme:light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}:root{--primary: #646cff;--primary-hover: #535bf2;--bg-dark: #242424;--card-bg: rgba(255, 255, 255, .1);--text-main: rgba(255, 255, 255, .87);--text-muted: rgba(255, 255, 255, .6);--success: #4caf50;--error: #f44336}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh;background:linear-gradient(135deg,#1a1a2e,#16213e);color:var(--text-main);font-family:Inter,system-ui,Avenir,Helvetica,Arial,sans-serif}.container{display:flex;justify-content:center;align-items:center;width:100%}.card{background:var(--card-bg);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.1);border-radius:16px;padding:2rem;width:100%;max-width:400px;box-shadow:0 8px 32px #0000005e;transition:transform .3s ease}.card:hover{transform:translateY(-5px)}.header{text-align:center;margin-bottom:2rem}.header h1{font-size:1.8rem;margin:0;background:-webkit-linear-gradient(45deg,#646cff,#a960ee);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.header p{color:var(--text-muted);margin-top:.5rem;font-size:.9rem}.input-group{margin-bottom:1.5rem;text-align:left}.input-group label{display:block;margin-bottom:.5rem;font-size:.85rem;color:var(--text-muted);font-weight:500}.input-group input{width:100%;padding:.8rem;border-radius:8px;border:1px solid rgba(255,255,255,.2);background:#0003;color:#fff;font-size:1rem;box-sizing:border-box;transition:all .3s ease}.input-group input:focus{outline:none;border-color:var(--primary);background:#0006;box-shadow:0 0 0 2px #646cff33}.input-group input:disabled{opacity:.5;cursor:not-allowed}.input-group.completed input{border-color:var(--success);color:var(--success)}button{width:100%;padding:.9rem;border-radius:8px;border:none;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease}.primary-btn{background:linear-gradient(90deg,var(--primary) 0%,var(--primary-hover) 100%);color:#fff;box-shadow:0 4px 15px #646cff66}.primary-btn:hover:not(:disabled){transform:scale(1.02);box-shadow:0 6px 20px #646cff99}.primary-btn:disabled{background:#444;cursor:not-allowed;opacity:.7;box-shadow:none}.secondary-btn{background:transparent;border:1px solid var(--primary);color:var(--primary);margin-top:1rem}.secondary-btn:hover{background:#646cff1a}.message{margin-top:1rem;padding:.8rem;border-radius:6px;font-size:.9rem;text-align:center;animation:fadeIn .5s ease}.message.info{background:#646cff26;color:#a5aaff;border:1px solid rgba(100,108,255,.2)}.message.success{background:#4caf5026;color:#81c784;border:1px solid rgba(76,175,80,.2)}.message.error{background:#f4433626;color:#e57373;border:1px solid rgba(244,67,54,.2)}.loading-spinner{color:var(--text-muted);font-style:italic;text-align:center;padding:.5rem}.fade-in{animation:fadeIn .5s ease forwards}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}