* {
           margin: 0;
           padding: 0;
           box-sizing: border-box;
           }
       body {
           background: linear-gradient(135deg, #6a11cb 0%, #2575fc 100%);
           min-height: 100vh;
           display: flex;
           justify-content: center;
           align-items: center;
           padding: 20px;
       }
       .container {
           background: rgba(255, 255, 255, 0.92);
           backdrop-filter: blur(10px);
           border-radius: 16px;
           box-shadow: 0 12px 30px rgba(0, 0, 0, 0.25);
           width: 100%;
           max-width: 800px;
           padding: 40px;
           position: relative;
           overflow: hidden;
       }
       .container::before {
           content: '';
           position: absolute;
           top: -50%;
           left: -50%;
           width: 200%;
           height: 200%;
           background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0) 70%);
           z-index: -1;
       }
       .header {
           text-align: center;
           margin-bottom: 30px;
       }
       .header h1 {
           font-size: 2.8rem;
           color: #2c3e50;
           margin-bottom: 10px;
           background: linear-gradient(90deg, #2575fc, #6a11cb);
           -webkit-background-clip: text;
           -webkit-text-fill-color: transparent;
       }
       .header p {
           color: #7f8c8d;
           font-size: 1.2rem;
           max-width: 600px;
           margin: 0 auto;
           line-height: 1.6;
       }
       .card {
           background: white;
           border-radius: 12px;
           box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
           padding: 30px;
           margin-bottom: 30px;
       }
       .card-title {
           display: flex;
           align-items: center;
           margin-bottom: 20px;
       }
       .card-title i {
           background: linear-gradient(135deg, #6a11cb, #2575fc);
           width: 40px;
           height: 40px;
           border-radius: 50%;
           display: flex;
           align-items: center;
           justify-content: center;
           color: white;
           margin-right: 15px;
           font-size: 18px;
       }
       .card-title h2 {
           font-size: 1.8rem;
           color: #2c3e50;
       }
       .input-group {
           display: flex;
           margin-bottom: 25px;
           flex-direction: column;
       }
       .input-group label {
           font-size: 1.1rem;
           color: #2c3e50;
           margin-bottom: 8px;
           font-weight: 500;
       }
       .input-container {
           display: flex;
           border-radius: 10px;
           overflow: hidden;
           box-shadow: 0 4px 10px rgba(0, 0, 0, 0.08);
       }
       input {
           flex: 1;
           padding: 16px 20px;
           border: none;
           font-size: 1.1rem;
           background: #f8f9fa;
           outline: none;
           transition: all 0.3s ease;
       }
       input:focus {
           background: #fff;
           box-shadow: inset 0 0 0 2px #2575fc;
       }
       button {
           background: linear-gradient(135deg, #6a11cb 0%, #2575fc 100%);
           color: white;
           border: none;
           padding: 0 30px;
           font-size: 1.1rem;
           font-weight: 600;
           cursor: pointer;
           transition: all 0.3s ease;
       }
       button:hover {
           transform: translateY(-2px);
           box-shadow: 0 6px 15px rgba(37, 117, 252, 0.4);
       }
       button:active {
           transform: translateY(0);
       }
       .result-container {
           display: none;
           background: #f8f9fa;
           border-radius: 10px;
           padding: 20px;
           margin-top: 20px;
           position: relative;
       }
       .result-header {
           display: flex;
           justify-content: space-between;
           align-items: center;
           margin-bottom: 15px;
       }
       .result-title {
           font-size: 1.3rem;
           color: #2c3e50;
           font-weight: 600;
       }
       .copy-btn {
           background: #2ecc71;
           padding: 8px 15px;
           border-radius: 6px;
           font-size: 0.9rem;
       }
       .result-content {
           display: flex;
           align-items: center;
           background: white;
           border-radius: 8px;
           padding: 12px 15px;
           font-size: 1.1rem;
           overflow: auto;
       }
       .result-content i {
           color: #2575fc;
           margin-right: 10px;
       }
       .info-box {
           background: #e3f2fd;
           border-left: 4px solid #2196f3;
           padding: 15px;
           border-radius: 0 8px 8px 0;
           margin-top: 25px;
           font-size: 1rem;
           line-height: 1.6;
       }
       .info-box h3 {
           margin-bottom: 8px;
           color: #0d47a1;
       }
       .steps {
           display: flex;
           justify-content: space-between;
           margin-top: 30px;
           flex-wrap: wrap;
       }
       .step {
           flex: 1;
           min-width: 200px;
           padding: 20px;
           text-align: center;
           margin: 10px;
           background: rgba(37, 117, 252, 0.1);
           border-radius: 10px;
           transition: all 0.3s ease;
       }
       .step:hover {
           transform: translateY(-5px);
           background: rgba(37, 117, 252, 0.15);
       }
       .step i {
           font-size: 2.5rem;
           color: #2575fc;
           margin-bottom: 15px;
       }
       .step h3 {
           color: #2c3e50;
           margin-bottom: 10px;
       }
       .step p {
           color: #7f8c8d;
           font-size: 0.95rem;
           line-height: 1.5;
       }
       .footer {
           text-align: center;
           margin-top: 30px;
           color: #7f8c8d;
           font-size: 1rem;
       }
       .footer a {
           color: #2575fc;
           text-decoration: none;
       }
       .error-message {
           color: #e74c3c;
           margin-top: 10px;
           font-size: 1rem;
           display: none;
       }
       @media (max-width: 768px) {
           .container {
               padding: 25px;
           }
           .header h1 {
               font-size: 2.2rem;
           }
           .card {
               padding: 20px;
           }
           .input-container {
               flex-direction: column;
           }
           input {
               padding: 14px;
           }
           button {
               padding: 14px;
               margin-top: 10px;
           }
           .steps {
               flex-direction: column;
           }
       }
       .loading {
           display: none;
           text-align: center;
           padding: 20px;
       }
       .spinner {
           border: 4px solid rgba(0, 0, 0, 0.1);
           border-radius: 50%;
           border-top: 4px solid #2575fc;
           width: 40px;
           height: 40px;
           animation: spin 1s linear infinite;
           margin: 0 auto 15px;
       }
       @keyframes spin {
           0% {
               transform: rotate(0deg);
           }
           100% {
               transform: rotate(360deg);
           }
       }