* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: linear-gradient(135deg, #30cfd0 0%, #330867 100%);
            min-height: 100vh;
            padding: 40px 20px;
        }
        .container {
            max-width: 600px;
            margin: 0 auto;
            background: white;
            border-radius: 20px;
            padding: 40px;
            box-shadow: 0 20px 60px rgba(0,0,0,0.3);
        }
        h1 {
            text-align: center;
            color: #333;
            margin-bottom: 30px;
            font-size: 2em;
        }
        .input-group {
            margin-bottom: 20px;
        }
        label {
            display: block;
            margin-bottom: 8px;
            color: #555;
            font-weight: 600;
        }
        input, select {
            width: 100%;
            padding: 12px;
            border: 2px solid #e0e0e0;
            border-radius: 8px;
            font-size: 16px;
            transition: border-color 0.3s;
        }
        input:focus, select:focus {
            outline: none;
            border-color: #30cfd0;
        }
        .result {
            background: linear-gradient(135deg, #30cfd0 0%, #330867 100%);
            color: white;
            padding: 30px;
            border-radius: 12px;
            text-align: center;
            margin: 30px 0;
        }
        .result-amount {
            font-size: 2.5em;
            font-weight: bold;
            margin-bottom: 10px;
            word-break: break-word;
        }
        .result-info {
            font-size: 0.9em;
            opacity: 0.9;
        }
        .currency-type {
            display: inline-block;
            background: rgba(255, 255, 255, 0.2);
            padding: 4px 10px;
            border-radius: 12px;
            font-size: 11px;
            margin-left: 8px;
            text-transform: uppercase;
            font-weight: 600;
        }
        .loading {
            text-align: center;
            padding: 20px;
            color: #666;
            font-style: italic;
        }
        .error {
            background: #fee;
            border-left: 4px solid #e74c3c;
            padding: 15px;
            margin: 20px 0;
            border-radius: 4px;
            color: #c0392b;
        }
        .success {
            background: #e8f5e9;
            border-left: 4px solid #4caf50;
            padding: 15px;
            margin: 20px 0;
            border-radius: 4px;
            color: #2e7d32;
        }
        .search-box {
            position: relative;
            margin-bottom: 5px;
        }
        .search-box input {
            padding-right: 35px;
        }
        .search-icon {
            position: absolute;
            right: 12px;
            top: 50%;
            transform: translateY(-50%);
            color: #999;
        }
        select {
            max-height: 200px;
        }
        button {
            width: 100%;
            padding: 14px;
            background: linear-gradient(135deg, #30cfd0 0%, #330867 100%);
            color: white;
            border: none;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: transform 0.2s;
            margin-bottom: 10px;
        }
        button:hover {
            transform: translateY(-2px);
        }
        button.secondary {
            background: linear-gradient(135deg, #95a5a6 0%, #7f8c8d 100%);
        }
        .swap-btn {
            background: linear-gradient(135deg, #f39c12 0%, #e74c3c 100%);
            margin: 10px 0;
        }
        .info {
            background: #e7f3ff;
            border-left: 4px solid #2196F3;
            padding: 15px;
            margin: 20px 0;
            border-radius: 4px;
            font-size: 14px;
        }