* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', 'Inter', system-ui, sans-serif;
        }

        body {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
        }

        .container {
            max-width: 650px;
            width: 100%;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-radius: 40px;
            padding: 40px;
            box-shadow: 0 30px 60px rgba(0, 0, 0, 0.3);
            border: 1px solid rgba(255, 255, 255, 0.5);
        }

        h1 {
            font-size: 2.2rem;
            color: #1e293b;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        h1 svg {
            width: 40px;
            height: 40px;
            stroke: #667eea;
        }

        .subtitle {
            color: #475569;
            margin-bottom: 30px;
            font-size: 1rem;
            border-bottom: 1px solid #e2e8f0;
            padding-bottom: 15px;
        }

        .rate-selector {
            display: flex;
            gap: 10px;
            margin-bottom: 30px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .rate-btn {
            flex: 1;
            min-width: 70px;
            padding: 12px 8px;
            border: 2px solid #e2e8f0;
            background: white;
            border-radius: 40px;
            font-size: 1.1rem;
            font-weight: 700;
            color: #334155;
            cursor: pointer;
            transition: all 0.2s;
        }

        .rate-btn:hover {
            border-color: #667eea;
            background: #f8fafc;
        }

        .rate-btn.active {
            background: #667eea;
            border-color: #667eea;
            color: white;
        }

        .input-group {
            margin-bottom: 25px;
        }

        .input-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: #1e293b;
            font-size: 1rem;
        }

        .input-wrapper {
            display: flex;
            align-items: center;
            background: #f8fafc;
            border: 2px solid #e2e8f0;
            border-radius: 60px;
            overflow: hidden;
            transition: border-color 0.2s;
        }

        .input-wrapper:focus-within {
            border-color: #667eea;
        }

        .input-wrapper input {
            flex: 1;
            padding: 16px 20px;
            border: none;
            background: transparent;
            font-size: 1.2rem;
            outline: none;
        }

        .input-wrapper span {
            padding: 16px 20px;
            background: #f1f5f9;
            color: #475569;
            font-weight: 600;
            border-left: 2px solid #e2e8f0;
        }

        .results {
            background: #f8fafc;
            border-radius: 30px;
            padding: 25px;
            margin: 30px 0;
            border: 2px solid #e2e8f0;
        }

        .result-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 12px 0;
            border-bottom: 1px dashed #cbd5e1;
        }

        .result-row:last-child {
            border-bottom: none;
        }

        .result-label {
            color: #475569;
            font-weight: 500;
        }

        .result-value {
            font-size: 1.5rem;
            font-weight: 700;
            color: #1e293b;
        }

        .result-value.small {
            font-size: 1.2rem;
            color: #667eea;
        }

        .actions {
            display: flex;
            gap: 15px;
            margin-top: 20px;
            flex-wrap: wrap;
        }

        .btn {
            flex: 1;
            min-width: 140px;
            padding: 16px;
            border: none;
            border-radius: 60px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.2s;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        .btn-primary {
            background: #667eea;
            color: white;
        }

        .btn-primary:hover {
            background: #5a67d8;
            transform: translateY(-2px);
            box-shadow: 0 10px 20px rgba(102, 126, 234, 0.3);
        }

        .btn-secondary {
            background: white;
            color: #475569;
            border: 2px solid #e2e8f0;
        }

        .btn-secondary:hover {
            border-color: #667eea;
            color: #667eea;
        }

        .info-text {
            margin-top: 20px;
            text-align: center;
            color: #64748b;
            font-size: 0.9rem;
        }

        .info-text a {
            color: #667eea;
            text-decoration: none;
        }

        .info-text a:hover {
            text-decoration: underline;
        }

        @media (max-width: 480px) {
            .container {
                padding: 25px;
            }
            
            h1 {
                font-size: 1.8rem;
            }
            
            .rate-btn {
                font-size: 1rem;
                padding: 10px 5px;
                min-width: 60px;
            }
            
            .result-value {
                font-size: 1.2rem;
            }
            
            .btn {
                min-width: 100%;
            }
        }