* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            background-color: #121212;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: flex-start;
            color: white;
            padding-top: 8vh;
        }

        .container {
            text-align: center;
            max-width: 600px;
            width: 90%;
            padding: 2rem;
        }

        .logo {
            width: 200px;
            height: auto;
            margin-bottom: 4rem;
            filter: drop-shadow(0 4px 8px rgba(138, 43, 226, 0.3));
        }

        .form-container {
            background: rgba(255, 255, 255, 0.05);
            border-radius: 20px;
            padding: 2.5rem;
            backdrop-filter: blur(10px);
            border: 1px solid rgba(138, 43, 226, 0.2);
            box-shadow: 0 8px 32px rgba(138, 43, 226, 0.1);
        }

        .input-group {
            margin-bottom: 1.5rem;
        }

        .input-group label {
            display: block;
            margin-bottom: 0.5rem;
            color: #cccccc;
            font-weight: 500;
            text-align: left;
        }

        .input-field {
            width: 100%;
            padding: 1rem;
            border: 2px solid rgba(138, 43, 226, 0.3);
            border-radius: 12px;
            background: rgba(255, 255, 255, 0.1);
            color: white;
            font-size: 1rem;
            transition: all 0.3s ease;
        }

        .input-field:focus {
            outline: none;
            border-color: #8A2BE2;
            box-shadow: 0 0 20px rgba(138, 43, 226, 0.3);
        }

        .input-field::placeholder {
            color: #888;
        }

        .custom-url-container {
            display: flex;
            align-items: center;
            gap: 0;
            margin-top: 0.5rem;
        }

        .domain-prefix {
            color: #8A2BE2;
            font-weight: bold;
            font-size: 1rem;
            padding: 1rem;
            background: rgba(138, 43, 226, 0.1);
            border: 2px solid rgba(138, 43, 226, 0.3);
            border-right: none;
            border-radius: 12px 0 0 12px;
        }

        .custom-input {
            flex: 1;
            padding: 1rem;
            border: 2px solid rgba(138, 43, 226, 0.3);
            border-left: none;
            border-radius: 0 12px 12px 0;
            background: rgba(255, 255, 255, 0.1);
            color: white;
            font-size: 1rem;
        }

        .custom-input:focus {
            outline: none;
            border-color: #8A2BE2;
            box-shadow: 0 0 15px rgba(138, 43, 226, 0.3);
        }

        .shorten-btn {
            width: 100%;
            padding: 1.2rem;
            background: linear-gradient(135deg, #8A2BE2, #9370DB);
            color: white;
            border: none;
            border-radius: 12px;
            font-size: 1.1rem;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s ease;
            margin-top: 1rem;
        }

        .shorten-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(138, 43, 226, 0.4);
        }

        .shorten-btn:disabled {
            opacity: 0.6;
            cursor: not-allowed;
            transform: none;
        }

        .result-container {
            margin-top: 2rem;
            padding: 1.5rem;
            background: rgba(138, 43, 226, 0.1);
            border-radius: 12px;
            border: 1px solid rgba(138, 43, 226, 0.3);
            display: none;
        }

        .result-url {
            font-size: 1.2rem;
            color: #8A2BE2;
            font-weight: bold;
            margin-bottom: 1rem;
            word-break: break-all;
            background: rgba(0, 0, 0, 0.3);
            padding: 1rem;
            border-radius: 8px;
        }

        .button-group {
            display: flex;
            gap: 0.5rem;
            flex-wrap: wrap;
        }

        .copy-btn {
            flex: 1;
            min-width: 120px;
            padding: 0.8rem 1rem;
            border: 2px solid #8A2BE2;
            border-radius: 8px;
            cursor: pointer;
            font-weight: bold;
            transition: all 0.3s ease;
            background: rgba(138, 43, 226, 0.2);
            color: #8A2BE2;
        }

        .copy-btn:hover {
            background: #8A2BE2;
            color: white;
        }

        .error-message {
            color: #ff6b6b;
            background: rgba(255, 107, 107, 0.1);
            padding: 1rem;
            border-radius: 8px;
            margin-top: 1rem;
            display: none;
        }

        .success-message {
            color: #4CAF50;
            background: rgba(76, 175, 80, 0.1);
            padding: 1rem;
            border-radius: 8px;
            margin-top: 1rem;
            display: none;
        }

@media (max-width: 768px) {
            .container {
                padding: 1rem;
                width: 95%;
            }
            
            .logo {
                width: 150px;
            }
            
            .form-container {
                padding: 1.5rem 1rem;
            }

            body {
                padding-top: 4vh;
            }

            .input-field {
                padding: 0.8rem;
                font-size: 16px;
            }

            .custom-url-container {
                flex-direction: row;
                gap: 0;
            }

            .domain-prefix {
                border-radius: 12px 0 0 12px;
                border-right: none;
                text-align: center;
                padding: 0.8rem 0.5rem;
                font-size: 0.9rem;
            }

            .custom-input {
                border-radius: 0 12px 12px 0;
                border-left: none;
                padding: 0.8rem;
                font-size: 16px;
                width: 140px;
                max-width: 215px;
            }

            .button-group {
                flex-direction: column;
            }

            .copy-btn {
                flex: none;
                width: 100%;
            }
        }