*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:linear-gradient(135deg,#667eea,#764ba2);min-height:100vh}.app-container{max-width:900px;margin:0 auto;padding:40px 20px}.app-header{text-align:center;margin-bottom:40px;color:#fff}.app-header h1{font-size:2.5rem;font-weight:700;margin-bottom:10px;text-shadow:0 2px 10px rgba(0,0,0,.2)}.app-header p{font-size:1.1rem;opacity:.9}.controls-section{background:#fff;border-radius:16px;padding:30px;box-shadow:0 10px 40px #0000001a;margin-bottom:20px}.section-title{font-size:1.3rem;font-weight:600;color:#333;margin-bottom:20px;padding-bottom:10px;border-bottom:2px solid #f0f0f0}.button{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;padding:12px 28px;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 15px #667eea4d}.button:hover{transform:translateY(-2px);box-shadow:0 6px 20px #667eea66}.button:active{transform:translateY(0)}.button:disabled{opacity:.5;cursor:not-allowed;transform:none}.status-section{background:#fff;border-radius:16px;padding:30px;box-shadow:0 10px 40px #0000001a;margin-bottom:20px}.license-section{background:#fff;border-radius:16px;padding:30px;box-shadow:0 10px 40px #0000001a}.badge{display:inline-block;padding:6px 14px;border-radius:20px;font-size:.9rem;font-weight:600}.badge-valid{background:#10b981;color:#fff}.badge-invalid{background:#ef4444;color:#fff}.badge-expired{background:#f59e0b;color:#fff}.status-info{margin-top:15px;padding:15px;background:#f9fafb;border-radius:8px;color:#6b7280;font-size:.95rem}