:root{font-family:Inter,system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;--bg-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);--glass-bg: rgba(255, 255, 255, .1);--glass-border: rgba(255, 255, 255, .2);--glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, .37);--text-color: #ffffff;--primary-btn: #4CAF50;--danger-btn: #ff4d4d}*{box-sizing:border-box;margin:0;padding:0}body{min-height:100vh;background:var(--bg-gradient);color:var(--text-color);display:flex;place-items:center;justify-content:center;overflow-x:hidden}#root{width:100%;max-width:1280px;margin:0 auto;padding:2rem;text-align:center}.glass-panel{background:var(--glass-bg);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-radius:20px;border:1px solid var(--glass-border);box-shadow:var(--glass-shadow);padding:2rem;color:#fff}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:var(--glass-bg);cursor:pointer;transition:border-color .25s,background-color .25s;color:#fff;border:1px solid var(--glass-border)}button:hover{background-color:#fff3}button.primary{background-color:var(--primary-btn);border-color:var(--primary-btn)}button.primary:hover{background-color:#45a049}button.danger{background-color:var(--danger-btn);border-color:var(--danger-btn)}input{border-radius:8px;border:1px solid var(--glass-border);padding:.6em 1.2em;font-size:1em;font-family:inherit;background-color:#ffffff1a;color:#fff;outline:none;width:100%}input::placeholder{color:#fff9}input:focus{border-color:#ffffff80}h1{font-size:3.2em;line-height:1.1;margin-bottom:20px}.container{display:flex;flex-direction:column;gap:20px;max-width:500px;margin:0 auto}.card{padding:2em}